diff --git a/src/main/java/dk/camelot64/kickc/asm/AsmBasicUpstart.java b/src/main/java/dk/camelot64/kickc/asm/AsmBasicUpstart.java
new file mode 100644
index 000000000..a0f8b2748
--- /dev/null
+++ b/src/main/java/dk/camelot64/kickc/asm/AsmBasicUpstart.java
@@ -0,0 +1,37 @@
+package dk.camelot64.kickc.asm;
+
+/** Set the program counter */
+public class AsmBasicUpstart implements AsmLine {
+
+   private final String function;
+   private int index;
+
+   public AsmBasicUpstart(String function) {
+      this.function = function;
+   }
+
+   @Override
+   public int getLineBytes() {
+      return 0;
+   }
+
+   @Override
+   public double getLineCycles() {
+      return 0;
+   }
+
+   @Override
+   public String getAsm() {
+      return ":BasicUpstart("+function+")";
+   }
+
+   @Override
+   public int getIndex() {
+      return index;
+   }
+
+   @Override
+   public void setIndex(int index) {
+      this.index = index;
+   }
+}
diff --git a/src/main/java/dk/camelot64/kickc/asm/AsmLabelDecl.java b/src/main/java/dk/camelot64/kickc/asm/AsmLabelDecl.java
index fa0b0d90b..d64550f4f 100644
--- a/src/main/java/dk/camelot64/kickc/asm/AsmLabelDecl.java
+++ b/src/main/java/dk/camelot64/kickc/asm/AsmLabelDecl.java
@@ -1,5 +1,7 @@
 package dk.camelot64.kickc.asm;
 
+import dk.camelot64.kickc.fragment.AsmFragment;
+
 /** A label declaration .label lbl = val  */
 public class AsmLabelDecl implements AsmLine {
    private final String name;
@@ -24,7 +26,7 @@ public class AsmLabelDecl implements AsmLine {
 
    @Override
    public String getAsm() {
-      return ".label "+name+" = "+address;
+      return ".label "+name+" = "+ AsmFragment.getAsmNumber(address);
    }
 
    @Override
diff --git a/src/main/java/dk/camelot64/kickc/asm/AsmSetPc.java b/src/main/java/dk/camelot64/kickc/asm/AsmSetPc.java
new file mode 100644
index 000000000..8a73071f7
--- /dev/null
+++ b/src/main/java/dk/camelot64/kickc/asm/AsmSetPc.java
@@ -0,0 +1,42 @@
+package dk.camelot64.kickc.asm;
+
+import dk.camelot64.kickc.NumberParser;
+import dk.camelot64.kickc.fragment.AsmFragment;
+
+/** Set the program counter */
+public class AsmSetPc implements AsmLine {
+
+   private final String name;
+   private final int address;
+   private int index;
+
+   public AsmSetPc(String name, int address) {
+      this.name = name;
+      this.address = address;
+   }
+
+   @Override
+   public int getLineBytes() {
+      return 0;
+   }
+
+   @Override
+   public double getLineCycles() {
+      return 0;
+   }
+
+   @Override
+   public String getAsm() {
+      return ".pc = "+ AsmFragment.getAsmNumber(address)+" \""+name+"\"";
+   }
+
+   @Override
+   public int getIndex() {
+      return index;
+   }
+
+   @Override
+   public void setIndex(int index) {
+      this.index = index;
+   }
+}
diff --git a/src/main/java/dk/camelot64/kickc/fragment/AsmFragment.java b/src/main/java/dk/camelot64/kickc/fragment/AsmFragment.java
index 948f308dd..0fa286161 100644
--- a/src/main/java/dk/camelot64/kickc/fragment/AsmFragment.java
+++ b/src/main/java/dk/camelot64/kickc/fragment/AsmFragment.java
@@ -486,7 +486,6 @@ public class AsmFragment {
       return getAsmParamName(varScope, asmName, getCodeScope());
    }
 
-
    /**
     * Get the ASM parameter for a specific bound constant
     * @param boundVar The constant
diff --git a/src/main/java/dk/camelot64/kickc/model/StatementAsm.java b/src/main/java/dk/camelot64/kickc/model/StatementAsm.java
new file mode 100644
index 000000000..b73aaad03
--- /dev/null
+++ b/src/main/java/dk/camelot64/kickc/model/StatementAsm.java
@@ -0,0 +1,15 @@
+package dk.camelot64.kickc.model;
+
+/** Inline ASM code */
+public class StatementAsm extends StatementBase {
+
+
+   public StatementAsm(Integer index) {
+      super(index);
+   }
+
+   @Override
+   public String toString(Program program) {
+      return null;
+   }
+}
diff --git a/src/main/java/dk/camelot64/kickc/model/StatementBase.java b/src/main/java/dk/camelot64/kickc/model/StatementBase.java
index e3553c6ac..fa745ef88 100644
--- a/src/main/java/dk/camelot64/kickc/model/StatementBase.java
+++ b/src/main/java/dk/camelot64/kickc/model/StatementBase.java
@@ -25,9 +25,7 @@ public abstract class StatementBase implements Statement {
    public boolean equals(Object o) {
       if (this == o) return true;
       if (o == null || getClass() != o.getClass()) return false;
-
       StatementBase that = (StatementBase) o;
-
       return index != null ? index.equals(that.index) : that.index == null;
    }
 
@@ -60,4 +58,5 @@ public abstract class StatementBase implements Statement {
       str.append("]");
       return str.toString();
    }
+
 }
diff --git a/src/main/java/dk/camelot64/kickc/passes/Pass1GenerateStatementSequence.java b/src/main/java/dk/camelot64/kickc/passes/Pass1GenerateStatementSequence.java
index 19e176707..60f5339be 100644
--- a/src/main/java/dk/camelot64/kickc/passes/Pass1GenerateStatementSequence.java
+++ b/src/main/java/dk/camelot64/kickc/passes/Pass1GenerateStatementSequence.java
@@ -47,6 +47,7 @@ public class Pass1GenerateStatementSequence extends KickCBaseVisitor<Object> {
 
    public void generate(KickCParser.FileContext file) {
       this.visit(file);
+      sequence.addStatement(new StatementCall(null, "main", new ArrayList<RValue>()));
    }
 
    @Override
diff --git a/src/main/java/dk/camelot64/kickc/passes/Pass1TypeInference.java b/src/main/java/dk/camelot64/kickc/passes/Pass1TypeInference.java
index 2034273c8..50730c637 100644
--- a/src/main/java/dk/camelot64/kickc/passes/Pass1TypeInference.java
+++ b/src/main/java/dk/camelot64/kickc/passes/Pass1TypeInference.java
@@ -57,13 +57,13 @@ public class Pass1TypeInference {
          } else if(statement instanceof StatementCall) {
             StatementCall call = (StatementCall) statement;
             LValue lValue = call.getlValue();
+            String procedureName = call.getProcedureName();
+            Procedure procedure = scopes.peek().getProcedure(procedureName);
+            call.setProcedure(procedure.getRef());
+            if(procedure.getParameters().size()!=call.getParameters().size()) {
+               throw new RuntimeException("Wrong number of parameters in call. Expected " +procedure.getParameters().size()+". "+statement.toString());
+            }
             if(lValue instanceof VariableRef) {
-               String procedureName = call.getProcedureName();
-               Procedure procedure = scopes.peek().getProcedure(procedureName);
-               call.setProcedure(procedure.getRef());
-               if(procedure.getParameters().size()!=call.getParameters().size()) {
-                  throw new RuntimeException("Wrong number of parameters in call. Expected " +procedure.getParameters().size()+". "+statement.toString());
-               }
                Variable lValueVar = programScope.getVariable((VariableRef) lValue);
                lValueVar.setTypeInferred(procedure.getReturnType());
             }
diff --git a/src/main/java/dk/camelot64/kickc/passes/Pass4CodeGeneration.java b/src/main/java/dk/camelot64/kickc/passes/Pass4CodeGeneration.java
index 10229ff03..b5bc9c7dd 100644
--- a/src/main/java/dk/camelot64/kickc/passes/Pass4CodeGeneration.java
+++ b/src/main/java/dk/camelot64/kickc/passes/Pass4CodeGeneration.java
@@ -29,6 +29,11 @@ public class Pass4CodeGeneration {
       AsmProgram asm = new AsmProgram();
       ScopeRef currentScope = ScopeRef.ROOT;
 
+      asm.startSegment(null, "Basic Upstart");
+      asm.addLine(new AsmSetPc("Basic", 0x0801));
+      asm.addLine(new AsmBasicUpstart("main"));
+      asm.addLine(new AsmSetPc("Program", 0x080d));
+
       // Generate global ZP labels
       asm.startSegment(null, "Global Constants & labels");
       addConstants(asm, currentScope);
diff --git a/src/main/java/dk/camelot64/kickc/test/TestErrors.java b/src/main/java/dk/camelot64/kickc/test/TestErrors.java
index bc3d1216a..4bdaabd41 100644
--- a/src/main/java/dk/camelot64/kickc/test/TestErrors.java
+++ b/src/main/java/dk/camelot64/kickc/test/TestErrors.java
@@ -24,6 +24,10 @@ public class TestErrors extends TestCase {
       helper = new ReferenceHelper("dk/camelot64/kickc/test/ref/");
    }
 
+   public void testOverlapAllocation() throws IOException, URISyntaxException {
+      compileAndCompare("overlap-allocation");
+   }
+
    public void testIncD020() throws IOException, URISyntaxException {
       compileAndCompare("incd020");
    }
diff --git a/src/main/java/dk/camelot64/kickc/test/bitmap-bresenham.kc b/src/main/java/dk/camelot64/kickc/test/bitmap-bresenham.kc
index b36ad8fc6..13878e9af 100644
--- a/src/main/java/dk/camelot64/kickc/test/bitmap-bresenham.kc
+++ b/src/main/java/dk/camelot64/kickc/test/bitmap-bresenham.kc
@@ -56,21 +56,32 @@ void line(byte x0, byte x1, byte y0, byte y1) {
             if(yd<xd) {
                 line_xdyi(x0, y0, x1, xd, yd);
             } else {
-            plot(x0, y0);
-            plot(x1, y1);
+                line_ydxi(y0, x0, y1, yd, xd);
             }
         } else {
-            plot(x0, y0);
-            plot(x1, y1);
+            yd = y0-y1;
+            if(yd<xd) {
+                line_xdyd(x0, y0, x1, xd, yd);
+            } else {
+                line_ydxd(y1, x1, y0, yd, xd);
+            }
         }
     } else {
-        xd = x1-x0;
+        xd = x0-x1;
         if(y0<y1) {
-            plot(x0, y0);
-            plot(x1, y1);
+            yd = y1-y0;
+            if(yd<xd) {
+                line_xdyd(x1, y1, x0, xd, yd);
+            } else {
+                line_ydxd(y0, x0, y1, yd, xd);
+            }
         } else {
-            plot(x0, y0);
-            plot(x1, y1);
+            yd = y0-y1;
+            if(yd<xd) {
+                line_xdyi(x1, y1, x0, xd, yd);
+            } else {
+                line_ydxi(y1, x1, y0, yd, xd);
+            }
         }
     }
 }
@@ -88,6 +99,45 @@ void line_xdyi(byte x, byte y, byte x1, byte xd, byte yd) {
   } while (x<(x1+1))
 }
 
+void line_xdyd(byte x, byte y, byte x1, byte xd, byte yd) {
+  byte e = yd>>1;
+  do  {
+      plot(x,y);
+      x = x + 1;
+      e = e+yd;
+      if(xd<e) {
+          y = y-1;
+          e = e - xd;
+      }
+  } while (x<(x1+1))
+}
+
+void line_ydxi(byte y, byte x, byte y1, byte yd, byte xd) {
+  byte e = xd>>1;
+  do  {
+      plot(x,y);
+      y = y + 1;
+      e = e+xd;
+      if(yd<e) {
+          x = x+1;
+          e = e - yd;
+      }
+  } while (y<(y1+1))
+}
+
+void line_ydxd(byte y, byte x, byte y1, byte yd, byte xd) {
+  byte e = xd>>1;
+  do  {
+      plot(x,y);
+      y = y + 1;
+      e = e+xd;
+      if(yd<e) {
+          x = x-1;
+          e = e - yd;
+      }
+  } while (y<(y1+1))
+}
+
 void plot(byte x, byte y) {
     byte* plotter_x = 0;
     byte* plotter_y = 0;
diff --git a/src/main/java/dk/camelot64/kickc/test/overlap-allocation.kc b/src/main/java/dk/camelot64/kickc/test/overlap-allocation.kc
new file mode 100644
index 000000000..4f938e54b
--- /dev/null
+++ b/src/main/java/dk/camelot64/kickc/test/overlap-allocation.kc
@@ -0,0 +1,19 @@
+// Allocates ZP to j/k-variables even though all of i, j, k could be allocates to x and be more efficient.
+// Reason: Pass4RegisterUpliftCombinations.isAllocationOverlapping() believes i/j/k variables overlaps insode plot()
+byte* SCREEN = $0400;
+
+void main() {
+    for(byte i : 0..10) {
+       plot(i);
+    }
+   for(byte j : 0..10) {
+       plot(j);
+    }
+   for(byte k : 0..10) {
+       plot(k);
+    }
+}
+
+void plot(byte x) {
+    SCREEN[x] = '*';
+}
diff --git a/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.asm b/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.asm
index 40fdcc789..2f5f8be42 100644
--- a/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.asm
+++ b/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.asm
@@ -58,10 +58,9 @@ lines: {
     lda lines_y+1,x
     tax
     sty line.x0
-    lda _2
-    sta line.x1
-    ldy _3
-    stx line.y1
+    ldy _2
+    lda _3
+    sta line.y0
     jsr line
     inc l
     lda l
@@ -71,73 +70,183 @@ lines: {
 }
 line: {
     .label x0 = 5
-    .label x1 = 8
-    .label y1 = 9
-    .label xd = 10
-    lda x0
-    cmp x1
-    bcs b1
-    lda x1
+    .label y0 = 3
+    .label xd = 8
+    .label yd = 4
+    cpy x0
+    bcc b1
+    tya
     sec
     sbc x0
     sta xd
-    cpy y1
-    bcs b2
-    sty $ff
-    lda y1
+    cpx y0
+    bcc b2
+    txa
     sec
-    sbc $ff
-    tax
-    cpx xd
+    sbc y0
+    sta yd
+    lda yd
+    cmp xd
     bcs b3
     lda x0
     sta line_xdyi.x
-    sty line_xdyi.y
-    lda x1
-    sta line_xdyi.x1
-    stx line_xdyi.yd
+    lda y0
+    sta line_xdyi.y
+    sty line_xdyi.x1
+    lda xd
+    sta line_xdyi.xd
+    lda yd
+    sta line_xdyi.yd
     jsr line_xdyi
   breturn:
     rts
   b3:
-    ldx x0
-    jsr plot
-    ldx x1
-    ldy y1
-    jsr plot
+    lda y0
+    sta line_ydxi.y
+    lda x0
+    sta line_ydxi.x
+    stx line_ydxi.y1
+    lda xd
+    sta line_ydxi.xd
+    jsr line_ydxi
     jmp breturn
   b2:
-    ldx x0
-    jsr plot
-    ldx x1
-    ldy y1
-    jsr plot
+    stx $ff
+    lda y0
+    sec
+    sbc $ff
+    sta yd
+    lda yd
+    cmp xd
+    bcs b6
+    lda x0
+    sta line_xdyd.x
+    lda y0
+    sta line_xdyd.y
+    sty line_xdyd.x1
+    lda xd
+    sta line_xdyd.xd
+    lda yd
+    sta line_xdyd.yd
+    jsr line_xdyd
+    jmp breturn
+  b6:
+    stx line_ydxd.y
+    sty line_ydxd.x
+    lda y0
+    sta line_ydxd.y1
+    lda yd
+    sta line_ydxd.yd
+    lda xd
+    sta line_ydxd.xd
+    jsr line_ydxd
     jmp breturn
   b1:
-    lda x1
+    sty $ff
+    lda x0
     sec
-    sbc x0
-    cpy y1
-    bcs b7
-    ldx x0
-    jsr plot
-    ldx x1
-    ldy y1
-    jsr plot
+    sbc $ff
+    sta xd
+    cpx y0
+    bcc b9
+    txa
+    sec
+    sbc y0
+    sta yd
+    lda yd
+    cmp xd
+    bcs b10
+    sty line_xdyd.x
+    stx line_xdyd.y
+    lda x0
+    sta line_xdyd.x1
+    lda xd
+    sta line_xdyd.xd
+    lda yd
+    sta line_xdyd.yd
+    jsr line_xdyd
     jmp breturn
-  b7:
-    ldx x0
-    jsr plot
-    ldx x1
-    ldy y1
-    jsr plot
+  b10:
+    lda y0
+    sta line_ydxd.y
+    lda x0
+    sta line_ydxd.x
+    stx line_ydxd.y1
+    lda yd
+    sta line_ydxd.yd
+    lda xd
+    sta line_ydxd.xd
+    jsr line_ydxd
+    jmp breturn
+  b9:
+    stx $ff
+    lda y0
+    sec
+    sbc $ff
+    sta yd
+    lda yd
+    cmp xd
+    bcs b13
+    sty line_xdyi.x
+    stx line_xdyi.y
+    lda x0
+    sta line_xdyi.x1
+    lda xd
+    sta line_xdyi.xd
+    lda yd
+    sta line_xdyi.yd
+    jsr line_xdyi
+    jmp breturn
+  b13:
+    stx line_ydxi.y
+    sty line_ydxi.x
+    lda y0
+    sta line_ydxi.y1
+    lda xd
+    sta line_ydxi.xd
+    jsr line_ydxi
     jmp breturn
 }
+line_ydxi: {
+    .label y = 7
+    .label x = 6
+    .label y1 = 5
+    .label yd = 4
+    .label xd = 3
+    .label e = 8
+    lda xd
+    lsr
+    sta e
+  b1:
+    ldx x
+    ldy y
+    jsr plot
+    inc y
+    lda e
+    clc
+    adc xd
+    sta e
+    lda yd
+    cmp e
+    bcs b2
+    inc x
+    lda e
+    sec
+    sbc yd
+    sta e
+  b2:
+    lda y1
+    clc
+    adc #1
+    cmp y
+    bcs b1
+    rts
+}
 plot: {
-    .label _5 = 15
-    .label plotter_x = 6
-    .label plotter_y = 13
-    .label plotter = 6
+    .label _5 = 31
+    .label plotter_x = 27
+    .label plotter_y = 29
+    .label plotter = 27
     lda plot_xhi,x
     sta plotter_x+1
     lda #<0
@@ -166,12 +275,12 @@ plot: {
     rts
 }
 line_xdyi: {
-    .label x = 3
-    .label y = 4
+    .label x = 12
+    .label y = 13
     .label x1 = 11
     .label xd = 10
-    .label yd = 12
-    .label e = 5
+    .label yd = 9
+    .label e = 14
     lda yd
     lsr
     sta e
@@ -200,9 +309,79 @@ line_xdyi: {
     bcs b1
     rts
 }
+line_ydxd: {
+    .label y = 19
+    .label x = 18
+    .label y1 = 17
+    .label yd = 16
+    .label xd = 15
+    .label e = 20
+    lda xd
+    lsr
+    sta e
+  b1:
+    ldx x
+    ldy y
+    jsr plot
+    inc y
+    lda e
+    clc
+    adc xd
+    sta e
+    lda yd
+    cmp e
+    bcs b2
+    dec x
+    lda e
+    sec
+    sbc yd
+    sta e
+  b2:
+    lda y1
+    clc
+    adc #1
+    cmp y
+    bcs b1
+    rts
+}
+line_xdyd: {
+    .label x = 24
+    .label y = 25
+    .label x1 = 23
+    .label xd = 22
+    .label yd = 21
+    .label e = 26
+    lda yd
+    lsr
+    sta e
+  b1:
+    ldx x
+    ldy y
+    jsr plot
+    inc x
+    lda e
+    clc
+    adc yd
+    sta e
+    lda xd
+    cmp e
+    bcs b2
+    dec y
+    lda e
+    sec
+    sbc xd
+    sta e
+  b2:
+    lda x1
+    clc
+    adc #1
+    cmp x
+    bcs b1
+    rts
+}
 init_plot_tables: {
     .label _6 = 2
-    .label yoffs = 6
+    .label yoffs = 27
     ldy #$80
     ldx #0
   b1:
@@ -256,8 +435,8 @@ init_plot_tables: {
     jmp b2
 }
 init_screen: {
-    .label b = 6
-    .label c = 6
+    .label b = 27
+    .label c = 27
     lda #<BITMAP
     sta b
     lda #>BITMAP
diff --git a/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.cfg b/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.cfg
index f3f01899b..a8d42265f 100644
--- a/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.cfg
+++ b/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.cfg
@@ -1,10 +1,10 @@
 @begin: scope:[]  from
-  to:@7
-@7: scope:[]  from @begin
+  to:@10
+@10: scope:[]  from @begin
   [0] call main param-assignment [ ]
   to:@end
-@end: scope:[]  from @7
-main: scope:[main]  from @7
+@end: scope:[]  from @10
+main: scope:[main]  from @10
   [1] *((const byte*) BGCOL#0) ← (byte) 0 [ ]
   [2] *((const byte*) FGCOL#0) ← (byte) 0 [ ]
   [3] *((const byte*) D011#0) ← (const byte) BMM#0|(const byte) DEN#0|(const byte) RSEL#0|(byte) 3 [ ]
@@ -47,177 +47,312 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
-  to:line::@9
-line::@9: scope:[line]  from line
+  to:line::@15
+line::@15: scope:[line]  from line
   [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ]
   [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ]
-  to:line::@10
-line::@10: scope:[line]  from line::@9
-  [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
-  [28] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
-  to:line::@11
-line::@11: scope:[line]  from line::@10
-  [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyi::x#0 ]
-  [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 ]
-  [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ]
-  [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
-  [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ]
+  to:line::@16
+line::@16: scope:[line]  from line::@15
+  [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ]
+  [28] if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ]
+  to:line::@17
+line::@17: scope:[line]  from line::@16
+  [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#1 line_xdyi::x#0 ]
+  [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 ]
+  [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ]
+  [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
+  [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ]
   [34] call line_xdyi param-assignment [ ]
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   [35] return  [ ]
   to:@return
-line::@3: scope:[line]  from line::@10
-  [36] (byte) plot::x#2 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#2 ]
-  [37] (byte) plot::y#2 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#2 plot::y#2 ]
-  [38] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  [39] (byte) plot::x#3 ← (byte) line::x1#0 [ line::y1#0 plot::x#3 ]
-  [40] (byte) plot::y#3 ← (byte) line::y1#0 [ plot::x#3 plot::y#3 ]
-  [41] call plot param-assignment [ ]
+line::@3: scope:[line]  from line::@16
+  [36] (byte) line_ydxi::y#0 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 ]
+  [37] (byte) line_ydxi::x#0 ← (byte) line::x0#0 [ line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 ]
+  [38] (byte) line_ydxi::y1#0 ← (byte) line::y1#0 [ line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 ]
+  [39] (byte) line_ydxi::yd#0 ← (byte) line::yd#1 [ line::xd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 ]
+  [40] (byte) line_ydxi::xd#0 ← (byte) line::xd#1 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#0 ]
+  [41] call line_ydxi param-assignment [ ]
   to:line::@return
-line::@2: scope:[line]  from line::@9
-  [42] (byte) plot::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#0 ]
-  [43] (byte) plot::y#0 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#0 plot::y#0 ]
-  [44] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  [45] (byte) plot::x#1 ← (byte) line::x1#0 [ line::y1#0 plot::x#1 ]
-  [46] (byte) plot::y#1 ← (byte) line::y1#0 [ plot::x#1 plot::y#1 ]
-  [47] call plot param-assignment [ ]
+line::@2: scope:[line]  from line::@15
+  [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
+  [43] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
+  to:line::@20
+line::@20: scope:[line]  from line::@2
+  [44] (byte) line_xdyd::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyd::x#0 ]
+  [45] (byte) line_xdyd::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 ]
+  [46] (byte) line_xdyd::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 ]
+  [47] (byte) line_xdyd::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 ]
+  [48] (byte) line_xdyd::yd#0 ← (byte) line::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#0 ]
+  [49] call line_xdyd param-assignment [ ]
+  to:line::@return
+line::@6: scope:[line]  from line::@2
+  [50] (byte) line_ydxd::y#0 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 ]
+  [51] (byte) line_ydxd::x#0 ← (byte) line::x1#0 [ line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 ]
+  [52] (byte) line_ydxd::y1#0 ← (byte) line::y0#0 [ line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 ]
+  [53] (byte) line_ydxd::yd#0 ← (byte) line::yd#0 [ line::xd#1 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 ]
+  [54] (byte) line_ydxd::xd#0 ← (byte) line::xd#1 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#0 ]
+  [55] call line_ydxd param-assignment [ ]
   to:line::@return
 line::@1: scope:[line]  from line
-  [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
-  [49] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
-  to:line::@15
-line::@15: scope:[line]  from line::@1
-  [50] (byte) plot::x#6 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#6 ]
-  [51] (byte) plot::y#6 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#6 plot::y#6 ]
-  [52] call plot param-assignment [ line::x1#0 line::y1#0 ]
+  [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ]
+  [57] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ]
+  to:line::@23
+line::@23: scope:[line]  from line::@1
+  [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ]
+  [59] if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ]
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  [53] (byte) plot::x#7 ← (byte) line::x1#0 [ line::y1#0 plot::x#7 ]
-  [54] (byte) plot::y#7 ← (byte) line::y1#0 [ plot::x#7 plot::y#7 ]
-  [55] call plot param-assignment [ ]
+line::@24: scope:[line]  from line::@23
+  [60] (byte) line_xdyd::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_xdyd::x#1 ]
+  [61] (byte) line_xdyd::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 ]
+  [62] (byte) line_xdyd::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 ]
+  [63] (byte) line_xdyd::xd#1 ← (byte) line::xd#0 [ line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 ]
+  [64] (byte) line_xdyd::yd#1 ← (byte) line::yd#3 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#1 ]
+  [65] call line_xdyd param-assignment [ ]
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  [56] (byte) plot::x#4 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#4 ]
-  [57] (byte) plot::y#4 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#4 plot::y#4 ]
-  [58] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  [59] (byte) plot::x#5 ← (byte) line::x1#0 [ line::y1#0 plot::x#5 ]
-  [60] (byte) plot::y#5 ← (byte) line::y1#0 [ plot::x#5 plot::y#5 ]
-  [61] call plot param-assignment [ ]
+line::@10: scope:[line]  from line::@23
+  [66] (byte) line_ydxd::y#1 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 ]
+  [67] (byte) line_ydxd::x#1 ← (byte) line::x0#0 [ line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 ]
+  [68] (byte) line_ydxd::y1#1 ← (byte) line::y1#0 [ line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 ]
+  [69] (byte) line_ydxd::yd#1 ← (byte) line::yd#3 [ line::xd#0 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 ]
+  [70] (byte) line_ydxd::xd#1 ← (byte) line::xd#0 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#1 ]
+  [71] call line_ydxd param-assignment [ ]
   to:line::@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  [62] (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 ) [ plot::x#9 plot::y#9 ]
-  [62] (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 ) [ plot::x#9 plot::y#9 ]
-  [63] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::$0 ]
-  [64] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#9 plot::y#9 plot::plotter_x#1 ]
-  [65] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::plotter_x#1 plot::$1 ]
-  [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ]
-  [67] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::$2 ]
-  [68] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::plotter_y#1 ]
-  [69] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ]
-  [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ]
-  [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ]
-  [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ]
-  [73] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9 [ plot::plotter#0 plot::$5 plot::$6 ]
-  [74] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ]
-  [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ]
+line::@9: scope:[line]  from line::@1
+  [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ]
+  [73] if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ]
+  to:line::@27
+line::@27: scope:[line]  from line::@9
+  [74] (byte) line_xdyi::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#10 line_xdyi::x#1 ]
+  [75] (byte) line_xdyi::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 ]
+  [76] (byte) line_xdyi::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 ]
+  [77] (byte) line_xdyi::xd#1 ← (byte) line::xd#0 [ line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 ]
+  [78] (byte) line_xdyi::yd#1 ← (byte) line::yd#10 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#1 ]
+  [79] call line_xdyi param-assignment [ ]
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  [80] (byte) line_ydxi::y#1 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 ]
+  [81] (byte) line_ydxi::x#1 ← (byte) line::x1#0 [ line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 ]
+  [82] (byte) line_ydxi::y1#1 ← (byte) line::y0#0 [ line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 ]
+  [83] (byte) line_ydxi::yd#1 ← (byte) line::yd#10 [ line::xd#0 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 ]
+  [84] (byte) line_ydxi::xd#1 ← (byte) line::xd#0 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#1 ]
+  [85] call line_ydxi param-assignment [ ]
+  to:line::@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  [86] (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [86] (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [86] (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [86] (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [86] (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [87] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ]
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  [88] (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  [88] (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  [88] (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  [89] (byte) plot::x#2 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 ]
+  [90] (byte) plot::y#2 ← (byte) line_ydxi::y#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 plot::y#2 ]
+  [91] call plot param-assignment [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  [92] (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::e#3 line_ydxi::y#2 ]
+  [93] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ]
+  [94] if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ]
+  to:line_ydxi::@3
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  [95] (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#2 ]
+  [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ]
+  to:line_ydxi::@2
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  [97] (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ]
+  [97] (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ]
+  [98] (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 line_ydxi::$8 ]
+  [99] if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ]
+  to:line_ydxi::@return
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  [100] return  [ ]
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  [101] (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 ) [ plot::x#4 plot::y#4 ]
+  [101] (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 ) [ plot::x#4 plot::y#4 ]
+  [102] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::$0 ]
+  [103] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#4 plot::y#4 plot::plotter_x#1 ]
+  [104] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::plotter_x#1 plot::$1 ]
+  [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ]
+  [106] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::$2 ]
+  [107] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::plotter_y#1 ]
+  [108] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ]
+  [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ]
+  [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ]
+  [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ]
+  [112] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4 [ plot::plotter#0 plot::$5 plot::$6 ]
+  [113] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ]
+  [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ]
   to:plot::@return
 plot::@return: scope:[plot]  from plot
-  [76] return  [ ]
+  [115] return  [ ]
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ]
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  [116] (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [116] (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [116] (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [116] (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [116] (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ]
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
-  [78] (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [78] (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [78] (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [79] (byte) plot::x#8 ← (byte) line_xdyi::x#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [80] (byte) plot::y#8 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 plot::y#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [81] call plot param-assignment [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
+  [118] (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [118] (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [118] (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [119] (byte) plot::x#0 ← (byte) line_xdyi::x#3 [ plot::x#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [120] (byte) plot::y#0 ← (byte) line_xdyi::y#3 [ plot::x#0 plot::y#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [121] call plot param-assignment [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  [82] (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::e#3 line_xdyi::x#1 ]
-  [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ]
-  [84] if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ]
+  [122] (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::e#3 line_xdyi::x#2 ]
+  [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ]
+  [124] if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ]
   to:line_xdyi::@3
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  [85] (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#1 ]
-  [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ]
+  [125] (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#2 ]
+  [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ]
   to:line_xdyi::@2
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
-  [87] (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ]
-  [87] (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ]
-  [88] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 line_xdyi::$8 ]
-  [89] if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ]
+  [127] (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ]
+  [127] (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ]
+  [128] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 line_xdyi::$8 ]
+  [129] if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ]
   to:line_xdyi::@return
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
-  [90] return  [ ]
+  [130] return  [ ]
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  [131] (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [131] (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [131] (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [131] (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [131] (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ]
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  [133] (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [133] (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [133] (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [134] (byte) plot::x#3 ← (byte) line_ydxd::x#3 [ plot::x#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [135] (byte) plot::y#3 ← (byte) line_ydxd::y#3 [ plot::x#3 plot::y#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [136] call plot param-assignment [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  [137] (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::e#3 line_ydxd::y#2 ]
+  [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ]
+  [139] if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ]
+  to:line_ydxd::@3
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  [140] (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#2 ]
+  [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ]
+  to:line_ydxd::@2
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  [142] (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ]
+  [142] (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ]
+  [143] (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 line_ydxd::$8 ]
+  [144] if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ]
+  to:line_ydxd::@return
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  [145] return  [ ]
+  to:@return
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  [146] (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [146] (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [146] (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [146] (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [146] (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ]
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  [148] (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [148] (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [148] (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [149] (byte) plot::x#1 ← (byte) line_xdyd::x#3 [ plot::x#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [150] (byte) plot::y#1 ← (byte) line_xdyd::y#3 [ plot::x#1 plot::y#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [151] call plot param-assignment [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  [152] (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::e#3 line_xdyd::x#2 ]
+  [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ]
+  [154] if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ]
+  to:line_xdyd::@3
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  [155] (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#2 ]
+  [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ]
+  to:line_xdyd::@2
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  [157] (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ]
+  [157] (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ]
+  [158] (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 line_xdyd::$8 ]
+  [159] if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ]
+  to:line_xdyd::@return
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  [160] return  [ ]
   to:@return
 init_plot_tables: scope:[init_plot_tables]  from main::@3
-  [91] phi() [ ]
+  [161] phi() [ ]
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@2
-  [92] (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) 128 init_plot_tables::@2/(byte) init_plot_tables::bit#4 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [92] (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) 0 init_plot_tables::@2/(byte) init_plot_tables::x#1 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ]
-  [94] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [97] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ]
-  [98] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ]
+  [162] (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) 128 init_plot_tables::@2/(byte) init_plot_tables::bit#4 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [162] (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) 0 init_plot_tables::@2/(byte) init_plot_tables::x#1 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ]
+  [164] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [167] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ]
+  [168] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ]
   to:init_plot_tables::@2
 init_plot_tables::@2: scope:[init_plot_tables]  from init_plot_tables::@1 init_plot_tables::@10
-  [99] (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@10/(byte) init_plot_tables::bit#1 init_plot_tables::@1/(byte) 128 ) [ init_plot_tables::x#2 init_plot_tables::bit#4 ]
-  [100] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ]
-  [101] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ]
+  [169] (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@10/(byte) init_plot_tables::bit#1 init_plot_tables::@1/(byte) 128 ) [ init_plot_tables::x#2 init_plot_tables::bit#4 ]
+  [170] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ]
+  [171] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ]
   to:init_plot_tables::@3
 init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@2 init_plot_tables::@4
-  [102] (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [102] (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ]
-  [104] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ]
-  [105] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ]
-  [106] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ]
-  [108] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ]
-  [110] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [172] (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [172] (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ]
+  [174] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ]
+  [175] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ]
+  [176] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ]
+  [178] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ]
+  [180] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
   to:init_plot_tables::@7
 init_plot_tables::@7: scope:[init_plot_tables]  from init_plot_tables::@3
-  [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ]
+  [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ]
   to:init_plot_tables::@4
 init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_plot_tables::@7
-  [112] (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 init_plot_tables::@7/(byte*) init_plot_tables::yoffs#1 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#4 ]
-  [113] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ]
-  [114] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ]
+  [182] (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 init_plot_tables::@7/(byte*) init_plot_tables::yoffs#1 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#4 ]
+  [183] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ]
+  [184] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ]
   to:init_plot_tables::@return
 init_plot_tables::@return: scope:[init_plot_tables]  from init_plot_tables::@4
-  [115] return  [ ]
+  [185] return  [ ]
   to:@return
 init_plot_tables::@10: scope:[init_plot_tables]  from init_plot_tables::@1
   to:init_plot_tables::@2
 init_screen: scope:[init_screen]  from main
-  [116] phi() [ ]
+  [186] phi() [ ]
   to:init_screen::@1
 init_screen::@1: scope:[init_screen]  from init_screen init_screen::@1
-  [117] (byte*) init_screen::b#2 ← phi( init_screen/(const byte*) BITMAP#0 init_screen::@1/(byte*) init_screen::b#1 ) [ init_screen::b#2 ]
-  [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ]
-  [119] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ]
-  [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ]
+  [187] (byte*) init_screen::b#2 ← phi( init_screen/(const byte*) BITMAP#0 init_screen::@1/(byte*) init_screen::b#1 ) [ init_screen::b#2 ]
+  [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ]
+  [189] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ]
+  [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ]
   to:init_screen::@2
 init_screen::@2: scope:[init_screen]  from init_screen::@1 init_screen::@2
-  [121] (byte*) init_screen::c#2 ← phi( init_screen::@2/(byte*) init_screen::c#1 init_screen::@1/(const byte*) SCREEN#0 ) [ init_screen::c#2 ]
-  [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ]
-  [123] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ]
-  [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ]
+  [191] (byte*) init_screen::c#2 ← phi( init_screen::@2/(byte*) init_screen::c#1 init_screen::@1/(const byte*) SCREEN#0 ) [ init_screen::c#2 ]
+  [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ]
+  [193] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ]
+  [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ]
   to:init_screen::@return
 init_screen::@return: scope:[init_screen]  from init_screen::@2
-  [125] return  [ ]
+  [195] return  [ ]
   to:@return
diff --git a/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.log b/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.log
index 6c3d2b4aa..ebedddbad 100644
--- a/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.log
+++ b/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.log
@@ -56,21 +56,32 @@ void line(byte x0, byte x1, byte y0, byte y1) {
             if(yd<xd) {
                 line_xdyi(x0, y0, x1, xd, yd);
             } else {
-            plot(x0, y0);
-            plot(x1, y1);
+                line_ydxi(y0, x0, y1, yd, xd);
             }
         } else {
-            plot(x0, y0);
-            plot(x1, y1);
+            yd = y0-y1;
+            if(yd<xd) {
+                line_xdyd(x0, y0, x1, xd, yd);
+            } else {
+                line_ydxd(y1, x1, y0, yd, xd);
+            }
         }
     } else {
-        xd = x1-x0;
+        xd = x0-x1;
         if(y0<y1) {
-            plot(x0, y0);
-            plot(x1, y1);
+            yd = y1-y0;
+            if(yd<xd) {
+                line_xdyd(x1, y1, x0, xd, yd);
+            } else {
+                line_ydxd(y0, x0, y1, yd, xd);
+            }
         } else {
-            plot(x0, y0);
-            plot(x1, y1);
+            yd = y0-y1;
+            if(yd<xd) {
+                line_xdyi(x1, y1, x0, xd, yd);
+            } else {
+                line_ydxi(y1, x1, y0, yd, xd);
+            }
         }
     }
 }
@@ -88,6 +99,45 @@ void line_xdyi(byte x, byte y, byte x1, byte xd, byte yd) {
   } while (x<(x1+1))
 }
 
+void line_xdyd(byte x, byte y, byte x1, byte xd, byte yd) {
+  byte e = yd>>1;
+  do  {
+      plot(x,y);
+      x = x + 1;
+      e = e+yd;
+      if(xd<e) {
+          y = y-1;
+          e = e - xd;
+      }
+  } while (x<(x1+1))
+}
+
+void line_ydxi(byte y, byte x, byte y1, byte yd, byte xd) {
+  byte e = xd>>1;
+  do  {
+      plot(x,y);
+      y = y + 1;
+      e = e+xd;
+      if(yd<e) {
+          x = x+1;
+          e = e - yd;
+      }
+  } while (y<(y1+1))
+}
+
+void line_ydxd(byte y, byte x, byte y1, byte yd, byte xd) {
+  byte e = xd>>1;
+  do  {
+      plot(x,y);
+      y = y + 1;
+      e = e+xd;
+      if(yd<e) {
+          x = x-1;
+          e = e - yd;
+      }
+  } while (y<(y1+1))
+}
+
 void plot(byte x, byte y) {
     byte* plotter_x = 0;
     byte* plotter_y = 0;
@@ -212,29 +262,52 @@ proc (void()) line((byte) line::x0 , (byte) line::x1 , (byte) line::y0 , (byte)
   (void~) line::$8 ← call line_xdyi (byte) line::x0 (byte) line::y0 (byte) line::x1 (byte) line::xd (byte) line::yd 
   goto line::@4
 line::@3:
-  (void~) line::$9 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$10 ← call plot (byte) line::x1 (byte) line::y1 
+  (void~) line::$9 ← call line_ydxi (byte) line::y0 (byte) line::x0 (byte) line::y1 (byte) line::yd (byte) line::xd 
 line::@4:
   goto line::@5
 line::@2:
-  (void~) line::$11 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$12 ← call plot (byte) line::x1 (byte) line::y1 
-line::@5:
-  goto line::@6
-line::@1:
-  (byte~) line::$13 ← (byte) line::x1 - (byte) line::x0
-  (byte) line::xd ← (byte~) line::$13
-  (boolean~) line::$14 ← (byte) line::y0 < (byte) line::y1
-  (boolean~) line::$15 ← ! (boolean~) line::$14
-  if((boolean~) line::$15) goto line::@7
-  (void~) line::$16 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$17 ← call plot (byte) line::x1 (byte) line::y1 
-  goto line::@8
-line::@7:
-  (void~) line::$18 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$19 ← call plot (byte) line::x1 (byte) line::y1 
-line::@8:
+  (byte~) line::$10 ← (byte) line::y0 - (byte) line::y1
+  (byte) line::yd ← (byte~) line::$10
+  (boolean~) line::$11 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$12 ← ! (boolean~) line::$11
+  if((boolean~) line::$12) goto line::@6
+  (void~) line::$13 ← call line_xdyd (byte) line::x0 (byte) line::y0 (byte) line::x1 (byte) line::xd (byte) line::yd 
+  goto line::@7
 line::@6:
+  (void~) line::$14 ← call line_ydxd (byte) line::y1 (byte) line::x1 (byte) line::y0 (byte) line::yd (byte) line::xd 
+line::@7:
+line::@5:
+  goto line::@8
+line::@1:
+  (byte~) line::$15 ← (byte) line::x0 - (byte) line::x1
+  (byte) line::xd ← (byte~) line::$15
+  (boolean~) line::$16 ← (byte) line::y0 < (byte) line::y1
+  (boolean~) line::$17 ← ! (boolean~) line::$16
+  if((boolean~) line::$17) goto line::@9
+  (byte~) line::$18 ← (byte) line::y1 - (byte) line::y0
+  (byte) line::yd ← (byte~) line::$18
+  (boolean~) line::$19 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$20 ← ! (boolean~) line::$19
+  if((boolean~) line::$20) goto line::@10
+  (void~) line::$21 ← call line_xdyd (byte) line::x1 (byte) line::y1 (byte) line::x0 (byte) line::xd (byte) line::yd 
+  goto line::@11
+line::@10:
+  (void~) line::$22 ← call line_ydxd (byte) line::y0 (byte) line::x0 (byte) line::y1 (byte) line::yd (byte) line::xd 
+line::@11:
+  goto line::@12
+line::@9:
+  (byte~) line::$23 ← (byte) line::y0 - (byte) line::y1
+  (byte) line::yd ← (byte~) line::$23
+  (boolean~) line::$24 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$25 ← ! (boolean~) line::$24
+  if((boolean~) line::$25) goto line::@13
+  (void~) line::$26 ← call line_xdyi (byte) line::x1 (byte) line::y1 (byte) line::x0 (byte) line::xd (byte) line::yd 
+  goto line::@14
+line::@13:
+  (void~) line::$27 ← call line_ydxi (byte) line::y1 (byte) line::x1 (byte) line::y0 (byte) line::yd (byte) line::xd 
+line::@14:
+line::@12:
+line::@8:
 line::@return:
   return 
 endproc // line()
@@ -261,6 +334,75 @@ line_xdyi::@2:
 line_xdyi::@return:
   return 
 endproc // line_xdyi()
+proc (void()) line_xdyd((byte) line_xdyd::x , (byte) line_xdyd::y , (byte) line_xdyd::x1 , (byte) line_xdyd::xd , (byte) line_xdyd::yd)
+  (byte~) line_xdyd::$0 ← (byte) line_xdyd::yd >> (byte) 1
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$0
+line_xdyd::@1:
+  (void~) line_xdyd::$1 ← call plot (byte) line_xdyd::x (byte) line_xdyd::y 
+  (byte~) line_xdyd::$2 ← (byte) line_xdyd::x + (byte) 1
+  (byte) line_xdyd::x ← (byte~) line_xdyd::$2
+  (byte~) line_xdyd::$3 ← (byte) line_xdyd::e + (byte) line_xdyd::yd
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$3
+  (boolean~) line_xdyd::$4 ← (byte) line_xdyd::xd < (byte) line_xdyd::e
+  (boolean~) line_xdyd::$5 ← ! (boolean~) line_xdyd::$4
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  (byte~) line_xdyd::$6 ← (byte) line_xdyd::y - (byte) 1
+  (byte) line_xdyd::y ← (byte~) line_xdyd::$6
+  (byte~) line_xdyd::$7 ← (byte) line_xdyd::e - (byte) line_xdyd::xd
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$7
+line_xdyd::@2:
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+line_xdyd::@return:
+  return 
+endproc // line_xdyd()
+proc (void()) line_ydxi((byte) line_ydxi::y , (byte) line_ydxi::x , (byte) line_ydxi::y1 , (byte) line_ydxi::yd , (byte) line_ydxi::xd)
+  (byte~) line_ydxi::$0 ← (byte) line_ydxi::xd >> (byte) 1
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$0
+line_ydxi::@1:
+  (void~) line_ydxi::$1 ← call plot (byte) line_ydxi::x (byte) line_ydxi::y 
+  (byte~) line_ydxi::$2 ← (byte) line_ydxi::y + (byte) 1
+  (byte) line_ydxi::y ← (byte~) line_ydxi::$2
+  (byte~) line_ydxi::$3 ← (byte) line_ydxi::e + (byte) line_ydxi::xd
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$3
+  (boolean~) line_ydxi::$4 ← (byte) line_ydxi::yd < (byte) line_ydxi::e
+  (boolean~) line_ydxi::$5 ← ! (boolean~) line_ydxi::$4
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  (byte~) line_ydxi::$6 ← (byte) line_ydxi::x + (byte) 1
+  (byte) line_ydxi::x ← (byte~) line_ydxi::$6
+  (byte~) line_ydxi::$7 ← (byte) line_ydxi::e - (byte) line_ydxi::yd
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$7
+line_ydxi::@2:
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+line_ydxi::@return:
+  return 
+endproc // line_ydxi()
+proc (void()) line_ydxd((byte) line_ydxd::y , (byte) line_ydxd::x , (byte) line_ydxd::y1 , (byte) line_ydxd::yd , (byte) line_ydxd::xd)
+  (byte~) line_ydxd::$0 ← (byte) line_ydxd::xd >> (byte) 1
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$0
+line_ydxd::@1:
+  (void~) line_ydxd::$1 ← call plot (byte) line_ydxd::x (byte) line_ydxd::y 
+  (byte~) line_ydxd::$2 ← (byte) line_ydxd::y + (byte) 1
+  (byte) line_ydxd::y ← (byte~) line_ydxd::$2
+  (byte~) line_ydxd::$3 ← (byte) line_ydxd::e + (byte) line_ydxd::xd
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$3
+  (boolean~) line_ydxd::$4 ← (byte) line_ydxd::yd < (byte) line_ydxd::e
+  (boolean~) line_ydxd::$5 ← ! (boolean~) line_ydxd::$4
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  (byte~) line_ydxd::$6 ← (byte) line_ydxd::x - (byte) 1
+  (byte) line_ydxd::x ← (byte~) line_ydxd::$6
+  (byte~) line_ydxd::$7 ← (byte) line_ydxd::e - (byte) line_ydxd::yd
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$7
+line_ydxd::@2:
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+line_ydxd::@return:
+  return 
+endproc // line_ydxd()
 proc (void()) plot((byte) plot::x , (byte) plot::y)
   (byte*) plot::plotter_x ← (byte) 0
   (byte*) plot::plotter_y ← (byte) 0
@@ -398,17 +540,25 @@ SYMBOLS
 (void()) line((byte) line::x0 , (byte) line::x1 , (byte) line::y0 , (byte) line::y1)
 (boolean~) line::$0
 (boolean~) line::$1
-(void~) line::$10
-(void~) line::$11
-(void~) line::$12
-(byte~) line::$13
-(boolean~) line::$14
-(boolean~) line::$15
-(void~) line::$16
-(void~) line::$17
-(void~) line::$18
-(void~) line::$19
+(byte~) line::$10
+(boolean~) line::$11
+(boolean~) line::$12
+(void~) line::$13
+(void~) line::$14
+(byte~) line::$15
+(boolean~) line::$16
+(boolean~) line::$17
+(byte~) line::$18
+(boolean~) line::$19
 (byte~) line::$2
+(boolean~) line::$20
+(void~) line::$21
+(void~) line::$22
+(byte~) line::$23
+(boolean~) line::$24
+(boolean~) line::$25
+(void~) line::$26
+(void~) line::$27
 (boolean~) line::$3
 (boolean~) line::$4
 (byte~) line::$5
@@ -417,6 +567,11 @@ SYMBOLS
 (void~) line::$8
 (void~) line::$9
 (label) line::@1
+(label) line::@10
+(label) line::@11
+(label) line::@12
+(label) line::@13
+(label) line::@14
 (label) line::@2
 (label) line::@3
 (label) line::@4
@@ -424,6 +579,7 @@ SYMBOLS
 (label) line::@6
 (label) line::@7
 (label) line::@8
+(label) line::@9
 (label) line::@return
 (byte) line::x0
 (byte) line::x1
@@ -431,6 +587,26 @@ SYMBOLS
 (byte) line::y0
 (byte) line::y1
 (byte) line::yd
+(void()) line_xdyd((byte) line_xdyd::x , (byte) line_xdyd::y , (byte) line_xdyd::x1 , (byte) line_xdyd::xd , (byte) line_xdyd::yd)
+(byte~) line_xdyd::$0
+(void~) line_xdyd::$1
+(byte~) line_xdyd::$2
+(byte~) line_xdyd::$3
+(boolean~) line_xdyd::$4
+(boolean~) line_xdyd::$5
+(byte~) line_xdyd::$6
+(byte~) line_xdyd::$7
+(byte~) line_xdyd::$8
+(boolean~) line_xdyd::$9
+(label) line_xdyd::@1
+(label) line_xdyd::@2
+(label) line_xdyd::@return
+(byte) line_xdyd::e
+(byte) line_xdyd::x
+(byte) line_xdyd::x1
+(byte) line_xdyd::xd
+(byte) line_xdyd::y
+(byte) line_xdyd::yd
 (void()) line_xdyi((byte) line_xdyi::x , (byte) line_xdyi::y , (byte) line_xdyi::x1 , (byte) line_xdyi::xd , (byte) line_xdyi::yd)
 (byte~) line_xdyi::$0
 (void~) line_xdyi::$1
@@ -451,6 +627,46 @@ SYMBOLS
 (byte) line_xdyi::xd
 (byte) line_xdyi::y
 (byte) line_xdyi::yd
+(void()) line_ydxd((byte) line_ydxd::y , (byte) line_ydxd::x , (byte) line_ydxd::y1 , (byte) line_ydxd::yd , (byte) line_ydxd::xd)
+(byte~) line_ydxd::$0
+(void~) line_ydxd::$1
+(byte~) line_ydxd::$2
+(byte~) line_ydxd::$3
+(boolean~) line_ydxd::$4
+(boolean~) line_ydxd::$5
+(byte~) line_ydxd::$6
+(byte~) line_ydxd::$7
+(byte~) line_ydxd::$8
+(boolean~) line_ydxd::$9
+(label) line_ydxd::@1
+(label) line_ydxd::@2
+(label) line_ydxd::@return
+(byte) line_ydxd::e
+(byte) line_ydxd::x
+(byte) line_ydxd::xd
+(byte) line_ydxd::y
+(byte) line_ydxd::y1
+(byte) line_ydxd::yd
+(void()) line_ydxi((byte) line_ydxi::y , (byte) line_ydxi::x , (byte) line_ydxi::y1 , (byte) line_ydxi::yd , (byte) line_ydxi::xd)
+(byte~) line_ydxi::$0
+(void~) line_ydxi::$1
+(byte~) line_ydxi::$2
+(byte~) line_ydxi::$3
+(boolean~) line_ydxi::$4
+(boolean~) line_ydxi::$5
+(byte~) line_ydxi::$6
+(byte~) line_ydxi::$7
+(byte~) line_ydxi::$8
+(boolean~) line_ydxi::$9
+(label) line_ydxi::@1
+(label) line_ydxi::@2
+(label) line_ydxi::@return
+(byte) line_ydxi::e
+(byte) line_ydxi::x
+(byte) line_ydxi::xd
+(byte) line_ydxi::y
+(byte) line_ydxi::y1
+(byte) line_ydxi::yd
 (void()) lines()
 (byte~) lines::$0
 (byte~) lines::$1
@@ -571,64 +787,102 @@ line: scope:[line]  from
   (boolean~) line::$0 ← (byte) line::x0 < (byte) line::x1
   (boolean~) line::$1 ← ! (boolean~) line::$0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line line::@14
-  (byte~) line::$13 ← (byte) line::x1 - (byte) line::x0
-  (byte) line::xd ← (byte~) line::$13
-  (boolean~) line::$14 ← (byte) line::y0 < (byte) line::y1
-  (boolean~) line::$15 ← ! (boolean~) line::$14
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line line::@22
+  (byte~) line::$15 ← (byte) line::x0 - (byte) line::x1
+  (byte) line::xd ← (byte~) line::$15
+  (boolean~) line::$16 ← (byte) line::y0 < (byte) line::y1
+  (boolean~) line::$17 ← ! (boolean~) line::$16
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte~) line::$2 ← (byte) line::x1 - (byte) line::x0
   (byte) line::xd ← (byte~) line::$2
   (boolean~) line::$3 ← (byte) line::y0 < (byte) line::y1
   (boolean~) line::$4 ← ! (boolean~) line::$3
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@13 line::@9
-  (void~) line::$11 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$12 ← call plot (byte) line::x1 (byte) line::y1 
-  to:line::@5
-line::@10: scope:[line]  from line::@9
+  to:line::@16
+line::@2: scope:[line]  from line::@15 line::@19
+  (byte~) line::$10 ← (byte) line::y0 - (byte) line::y1
+  (byte) line::yd ← (byte~) line::$10
+  (boolean~) line::$11 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$12 ← ! (boolean~) line::$11
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
   (byte~) line::$5 ← (byte) line::y1 - (byte) line::y0
   (byte) line::yd ← (byte~) line::$5
   (boolean~) line::$6 ← (byte) line::yd < (byte) line::xd
   (boolean~) line::$7 ← ! (boolean~) line::$6
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10 line::@12
-  (void~) line::$9 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$10 ← call plot (byte) line::x1 (byte) line::y1 
+  to:line::@17
+line::@3: scope:[line]  from line::@16 line::@18
+  (void~) line::$9 ← call line_ydxi (byte) line::y0 (byte) line::x0 (byte) line::y1 (byte) line::yd (byte) line::xd 
   to:line::@4
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (void~) line::$8 ← call line_xdyi (byte) line::x0 (byte) line::y0 (byte) line::x1 (byte) line::xd (byte) line::yd 
   to:line::@4
-line::@4: scope:[line]  from line::@11 line::@3
+line::@4: scope:[line]  from line::@17 line::@3
   to:line::@5
-line::@12: scope:[line]  from
+line::@18: scope:[line]  from
   to:line::@3
-line::@5: scope:[line]  from line::@2 line::@4
-  to:line::@6
-line::@13: scope:[line]  from
+line::@5: scope:[line]  from line::@4 line::@7
+  to:line::@8
+line::@19: scope:[line]  from
   to:line::@2
-line::@6: scope:[line]  from line::@5 line::@8
-  to:line::@return
-line::@14: scope:[line]  from
-  to:line::@1
-line::@7: scope:[line]  from line::@1 line::@16
-  (void~) line::$18 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$19 ← call plot (byte) line::x1 (byte) line::y1 
-  to:line::@8
-line::@15: scope:[line]  from line::@1
-  (void~) line::$16 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$17 ← call plot (byte) line::x1 (byte) line::y1 
-  to:line::@8
-line::@8: scope:[line]  from line::@15 line::@7
-  to:line::@6
-line::@16: scope:[line]  from
+line::@6: scope:[line]  from line::@2 line::@21
+  (void~) line::$14 ← call line_ydxd (byte) line::y1 (byte) line::x1 (byte) line::y0 (byte) line::yd (byte) line::xd 
   to:line::@7
-line::@return: scope:[line]  from line::@6
+line::@20: scope:[line]  from line::@2
+  (void~) line::$13 ← call line_xdyd (byte) line::x0 (byte) line::y0 (byte) line::x1 (byte) line::xd (byte) line::yd 
+  to:line::@7
+line::@7: scope:[line]  from line::@20 line::@6
+  to:line::@5
+line::@21: scope:[line]  from
+  to:line::@6
+line::@8: scope:[line]  from line::@12 line::@5
+  to:line::@return
+line::@22: scope:[line]  from
+  to:line::@1
+line::@9: scope:[line]  from line::@1 line::@26
+  (byte~) line::$23 ← (byte) line::y0 - (byte) line::y1
+  (byte) line::yd ← (byte~) line::$23
+  (boolean~) line::$24 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$25 ← ! (boolean~) line::$24
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte~) line::$18 ← (byte) line::y1 - (byte) line::y0
+  (byte) line::yd ← (byte~) line::$18
+  (boolean~) line::$19 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$20 ← ! (boolean~) line::$19
+  if((boolean~) line::$20) goto line::@10
+  to:line::@24
+line::@10: scope:[line]  from line::@23 line::@25
+  (void~) line::$22 ← call line_ydxd (byte) line::y0 (byte) line::x0 (byte) line::y1 (byte) line::yd (byte) line::xd 
+  to:line::@11
+line::@24: scope:[line]  from line::@23
+  (void~) line::$21 ← call line_xdyd (byte) line::x1 (byte) line::y1 (byte) line::x0 (byte) line::xd (byte) line::yd 
+  to:line::@11
+line::@11: scope:[line]  from line::@10 line::@24
+  to:line::@12
+line::@25: scope:[line]  from
+  to:line::@10
+line::@12: scope:[line]  from line::@11 line::@14
+  to:line::@8
+line::@26: scope:[line]  from
+  to:line::@9
+line::@13: scope:[line]  from line::@28 line::@9
+  (void~) line::$27 ← call line_ydxi (byte) line::y1 (byte) line::x1 (byte) line::y0 (byte) line::yd (byte) line::xd 
+  to:line::@14
+line::@27: scope:[line]  from line::@9
+  (void~) line::$26 ← call line_xdyi (byte) line::x1 (byte) line::y1 (byte) line::x0 (byte) line::xd (byte) line::yd 
+  to:line::@14
+line::@14: scope:[line]  from line::@13 line::@27
+  to:line::@12
+line::@28: scope:[line]  from
+  to:line::@13
+line::@return: scope:[line]  from line::@8
   return 
   to:@return
 @3: scope:[]  from @2
@@ -665,6 +919,102 @@ line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@4
   to:@return
 @4: scope:[]  from @3
   to:@5
+line_xdyd: scope:[line_xdyd]  from
+  (byte~) line_xdyd::$0 ← (byte) line_xdyd::yd >> (byte) 1
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$0
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (void~) line_xdyd::$1 ← call plot (byte) line_xdyd::x (byte) line_xdyd::y 
+  (byte~) line_xdyd::$2 ← (byte) line_xdyd::x + (byte) 1
+  (byte) line_xdyd::x ← (byte~) line_xdyd::$2
+  (byte~) line_xdyd::$3 ← (byte) line_xdyd::e + (byte) line_xdyd::yd
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$3
+  (boolean~) line_xdyd::$4 ← (byte) line_xdyd::xd < (byte) line_xdyd::e
+  (boolean~) line_xdyd::$5 ← ! (boolean~) line_xdyd::$4
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@1 line_xdyd::@3
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@4
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@1
+  (byte~) line_xdyd::$6 ← (byte) line_xdyd::y - (byte) 1
+  (byte) line_xdyd::y ← (byte~) line_xdyd::$6
+  (byte~) line_xdyd::$7 ← (byte) line_xdyd::e - (byte) line_xdyd::xd
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$7
+  to:line_xdyd::@2
+line_xdyd::@4: scope:[line_xdyd]  from line_xdyd::@2
+  to:line_xdyd::@return
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@4
+  return 
+  to:@return
+@5: scope:[]  from @4
+  to:@6
+line_ydxi: scope:[line_ydxi]  from
+  (byte~) line_ydxi::$0 ← (byte) line_ydxi::xd >> (byte) 1
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$0
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (void~) line_ydxi::$1 ← call plot (byte) line_ydxi::x (byte) line_ydxi::y 
+  (byte~) line_ydxi::$2 ← (byte) line_ydxi::y + (byte) 1
+  (byte) line_ydxi::y ← (byte~) line_ydxi::$2
+  (byte~) line_ydxi::$3 ← (byte) line_ydxi::e + (byte) line_ydxi::xd
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$3
+  (boolean~) line_ydxi::$4 ← (byte) line_ydxi::yd < (byte) line_ydxi::e
+  (boolean~) line_ydxi::$5 ← ! (boolean~) line_ydxi::$4
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@1 line_ydxi::@3
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@4
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@1
+  (byte~) line_ydxi::$6 ← (byte) line_ydxi::x + (byte) 1
+  (byte) line_ydxi::x ← (byte~) line_ydxi::$6
+  (byte~) line_ydxi::$7 ← (byte) line_ydxi::e - (byte) line_ydxi::yd
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$7
+  to:line_ydxi::@2
+line_ydxi::@4: scope:[line_ydxi]  from line_ydxi::@2
+  to:line_ydxi::@return
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@4
+  return 
+  to:@return
+@6: scope:[]  from @5
+  to:@7
+line_ydxd: scope:[line_ydxd]  from
+  (byte~) line_ydxd::$0 ← (byte) line_ydxd::xd >> (byte) 1
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$0
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (void~) line_ydxd::$1 ← call plot (byte) line_ydxd::x (byte) line_ydxd::y 
+  (byte~) line_ydxd::$2 ← (byte) line_ydxd::y + (byte) 1
+  (byte) line_ydxd::y ← (byte~) line_ydxd::$2
+  (byte~) line_ydxd::$3 ← (byte) line_ydxd::e + (byte) line_ydxd::xd
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$3
+  (boolean~) line_ydxd::$4 ← (byte) line_ydxd::yd < (byte) line_ydxd::e
+  (boolean~) line_ydxd::$5 ← ! (boolean~) line_ydxd::$4
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@1 line_ydxd::@3
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@4
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@1
+  (byte~) line_ydxd::$6 ← (byte) line_ydxd::x - (byte) 1
+  (byte) line_ydxd::x ← (byte~) line_ydxd::$6
+  (byte~) line_ydxd::$7 ← (byte) line_ydxd::e - (byte) line_ydxd::yd
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$7
+  to:line_ydxd::@2
+line_ydxd::@4: scope:[line_ydxd]  from line_ydxd::@2
+  to:line_ydxd::@return
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@4
+  return 
+  to:@return
+@7: scope:[]  from @6
+  to:@8
 plot: scope:[plot]  from
   (byte*) plot::plotter_x ← (byte) 0
   (byte*) plot::plotter_y ← (byte) 0
@@ -686,8 +1036,8 @@ plot: scope:[plot]  from
 plot::@return: scope:[plot]  from plot
   return 
   to:@return
-@5: scope:[]  from @4
-  to:@6
+@8: scope:[]  from @7
+  to:@9
 init_plot_tables: scope:[init_plot_tables]  from
   (byte) init_plot_tables::bit ← (byte) 128
   (byte) init_plot_tables::x ← (byte) 0
@@ -742,8 +1092,8 @@ init_plot_tables::@8: scope:[init_plot_tables]  from init_plot_tables::@4
 init_plot_tables::@return: scope:[init_plot_tables]  from init_plot_tables::@8
   return 
   to:@return
-@6: scope:[]  from @5
-  to:@7
+@9: scope:[]  from @8
+  to:@10
 init_screen: scope:[init_screen]  from
   (byte*) init_screen::b ← (byte*) BITMAP
   to:init_screen::@1
@@ -769,29 +1119,41 @@ init_screen::@4: scope:[init_screen]  from init_screen::@2
 init_screen::@return: scope:[init_screen]  from init_screen::@4
   return 
   to:@return
-@7: scope:[]  from @6
+@10: scope:[]  from @9
   (void~) $0 ← call main 
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Removing empty block main::@2
 Removing empty block @1
 Removing empty block lines::@2
 Removing empty block @2
 Removing empty block line::@4
-Removing empty block line::@12
+Removing empty block line::@18
 Removing empty block line::@5
-Removing empty block line::@13
-Removing empty block line::@6
-Removing empty block line::@14
+Removing empty block line::@19
+Removing empty block line::@7
+Removing empty block line::@21
 Removing empty block line::@8
-Removing empty block line::@16
+Removing empty block line::@22
+Removing empty block line::@11
+Removing empty block line::@25
+Removing empty block line::@12
+Removing empty block line::@26
+Removing empty block line::@14
+Removing empty block line::@28
 Removing empty block @3
 Removing empty block line_xdyi::@4
 Removing empty block @4
+Removing empty block line_xdyd::@4
 Removing empty block @5
-Removing empty block init_plot_tables::@8
+Removing empty block line_ydxi::@4
 Removing empty block @6
+Removing empty block line_ydxd::@4
+Removing empty block @7
+Removing empty block @8
+Removing empty block init_plot_tables::@8
+Removing empty block @9
 Removing empty block init_screen::@4
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
@@ -819,7 +1181,7 @@ CONTROL FLOW GRAPH
   (byte[]) lines_x ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt ← (byte) 8
-  to:@7
+  to:@10
 main: scope:[main]  from
   *((byte*) BGCOL) ← (byte) 0
   *((byte*) FGCOL) ← (byte) 0
@@ -860,48 +1222,74 @@ line: scope:[line]  from
   (boolean~) line::$0 ← (byte) line::x0 < (byte) line::x1
   (boolean~) line::$1 ← ! (boolean~) line::$0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte~) line::$13 ← (byte) line::x1 - (byte) line::x0
-  (byte) line::xd ← (byte~) line::$13
-  (boolean~) line::$14 ← (byte) line::y0 < (byte) line::y1
-  (boolean~) line::$15 ← ! (boolean~) line::$14
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte~) line::$15 ← (byte) line::x0 - (byte) line::x1
+  (byte) line::xd ← (byte~) line::$15
+  (boolean~) line::$16 ← (byte) line::y0 < (byte) line::y1
+  (boolean~) line::$17 ← ! (boolean~) line::$16
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte~) line::$2 ← (byte) line::x1 - (byte) line::x0
   (byte) line::xd ← (byte~) line::$2
   (boolean~) line::$3 ← (byte) line::y0 < (byte) line::y1
   (boolean~) line::$4 ← ! (boolean~) line::$3
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (void~) line::$11 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$12 ← call plot (byte) line::x1 (byte) line::y1 
-  to:line::@return
-line::@10: scope:[line]  from line::@9
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte~) line::$10 ← (byte) line::y0 - (byte) line::y1
+  (byte) line::yd ← (byte~) line::$10
+  (boolean~) line::$11 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$12 ← ! (boolean~) line::$11
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
   (byte~) line::$5 ← (byte) line::y1 - (byte) line::y0
   (byte) line::yd ← (byte~) line::$5
   (boolean~) line::$6 ← (byte) line::yd < (byte) line::xd
   (boolean~) line::$7 ← ! (boolean~) line::$6
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (void~) line::$9 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$10 ← call plot (byte) line::x1 (byte) line::y1 
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (void~) line::$9 ← call line_ydxi (byte) line::y0 (byte) line::x0 (byte) line::y1 (byte) line::yd (byte) line::xd 
   to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (void~) line::$8 ← call line_xdyi (byte) line::x0 (byte) line::y0 (byte) line::x1 (byte) line::xd (byte) line::yd 
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (void~) line::$18 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$19 ← call plot (byte) line::x1 (byte) line::y1 
+line::@6: scope:[line]  from line::@2
+  (void~) line::$14 ← call line_ydxd (byte) line::y1 (byte) line::x1 (byte) line::y0 (byte) line::yd (byte) line::xd 
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (void~) line::$16 ← call plot (byte) line::x0 (byte) line::y0 
-  (void~) line::$17 ← call plot (byte) line::x1 (byte) line::y1 
+line::@20: scope:[line]  from line::@2
+  (void~) line::$13 ← call line_xdyd (byte) line::x0 (byte) line::y0 (byte) line::x1 (byte) line::xd (byte) line::yd 
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@15 line::@2 line::@3 line::@7
+line::@9: scope:[line]  from line::@1
+  (byte~) line::$23 ← (byte) line::y0 - (byte) line::y1
+  (byte) line::yd ← (byte~) line::$23
+  (boolean~) line::$24 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$25 ← ! (boolean~) line::$24
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte~) line::$18 ← (byte) line::y1 - (byte) line::y0
+  (byte) line::yd ← (byte~) line::$18
+  (boolean~) line::$19 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$20 ← ! (boolean~) line::$19
+  if((boolean~) line::$20) goto line::@10
+  to:line::@24
+line::@10: scope:[line]  from line::@23
+  (void~) line::$22 ← call line_ydxd (byte) line::y0 (byte) line::x0 (byte) line::y1 (byte) line::yd (byte) line::xd 
+  to:line::@return
+line::@24: scope:[line]  from line::@23
+  (void~) line::$21 ← call line_xdyd (byte) line::x1 (byte) line::y1 (byte) line::x0 (byte) line::xd (byte) line::yd 
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (void~) line::$27 ← call line_ydxi (byte) line::y1 (byte) line::x1 (byte) line::y0 (byte) line::yd (byte) line::xd 
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (void~) line::$26 ← call line_xdyi (byte) line::x1 (byte) line::y1 (byte) line::x0 (byte) line::xd (byte) line::yd 
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
 line_xdyi: scope:[line_xdyi]  from
@@ -932,6 +1320,90 @@ line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@1
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
+line_xdyd: scope:[line_xdyd]  from
+  (byte~) line_xdyd::$0 ← (byte) line_xdyd::yd >> (byte) 1
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$0
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (void~) line_xdyd::$1 ← call plot (byte) line_xdyd::x (byte) line_xdyd::y 
+  (byte~) line_xdyd::$2 ← (byte) line_xdyd::x + (byte) 1
+  (byte) line_xdyd::x ← (byte~) line_xdyd::$2
+  (byte~) line_xdyd::$3 ← (byte) line_xdyd::e + (byte) line_xdyd::yd
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$3
+  (boolean~) line_xdyd::$4 ← (byte) line_xdyd::xd < (byte) line_xdyd::e
+  (boolean~) line_xdyd::$5 ← ! (boolean~) line_xdyd::$4
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@1 line_xdyd::@3
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@1
+  (byte~) line_xdyd::$6 ← (byte) line_xdyd::y - (byte) 1
+  (byte) line_xdyd::y ← (byte~) line_xdyd::$6
+  (byte~) line_xdyd::$7 ← (byte) line_xdyd::e - (byte) line_xdyd::xd
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$7
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from
+  (byte~) line_ydxi::$0 ← (byte) line_ydxi::xd >> (byte) 1
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$0
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (void~) line_ydxi::$1 ← call plot (byte) line_ydxi::x (byte) line_ydxi::y 
+  (byte~) line_ydxi::$2 ← (byte) line_ydxi::y + (byte) 1
+  (byte) line_ydxi::y ← (byte~) line_ydxi::$2
+  (byte~) line_ydxi::$3 ← (byte) line_ydxi::e + (byte) line_ydxi::xd
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$3
+  (boolean~) line_ydxi::$4 ← (byte) line_ydxi::yd < (byte) line_ydxi::e
+  (boolean~) line_ydxi::$5 ← ! (boolean~) line_ydxi::$4
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@1 line_ydxi::@3
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@1
+  (byte~) line_ydxi::$6 ← (byte) line_ydxi::x + (byte) 1
+  (byte) line_ydxi::x ← (byte~) line_ydxi::$6
+  (byte~) line_ydxi::$7 ← (byte) line_ydxi::e - (byte) line_ydxi::yd
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$7
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from
+  (byte~) line_ydxd::$0 ← (byte) line_ydxd::xd >> (byte) 1
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$0
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (void~) line_ydxd::$1 ← call plot (byte) line_ydxd::x (byte) line_ydxd::y 
+  (byte~) line_ydxd::$2 ← (byte) line_ydxd::y + (byte) 1
+  (byte) line_ydxd::y ← (byte~) line_ydxd::$2
+  (byte~) line_ydxd::$3 ← (byte) line_ydxd::e + (byte) line_ydxd::xd
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$3
+  (boolean~) line_ydxd::$4 ← (byte) line_ydxd::yd < (byte) line_ydxd::e
+  (boolean~) line_ydxd::$5 ← ! (boolean~) line_ydxd::$4
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@1 line_ydxd::@3
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@1
+  (byte~) line_ydxd::$6 ← (byte) line_ydxd::x - (byte) 1
+  (byte) line_ydxd::x ← (byte~) line_ydxd::$6
+  (byte~) line_ydxd::$7 ← (byte) line_ydxd::e - (byte) line_ydxd::yd
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$7
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
 plot: scope:[plot]  from
   (byte*) plot::plotter_x ← (byte) 0
   (byte*) plot::plotter_y ← (byte) 0
@@ -1028,10 +1500,10 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   (void~) $0 ← call main 
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 PROCEDURE MODIFY VARIABLE ANALYSIS
 
@@ -1061,8 +1533,8 @@ CONTROL FLOW GRAPH WITH ASSIGNMENT CALL
   (byte[]) lines_x ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((byte*) BGCOL) ← (byte) 0
   *((byte*) FGCOL) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM | (byte) DEN
@@ -1114,90 +1586,133 @@ line: scope:[line]  from lines::@1
   (boolean~) line::$0 ← (byte) line::x0 < (byte) line::x1
   (boolean~) line::$1 ← ! (boolean~) line::$0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte~) line::$13 ← (byte) line::x1 - (byte) line::x0
-  (byte) line::xd ← (byte~) line::$13
-  (boolean~) line::$14 ← (byte) line::y0 < (byte) line::y1
-  (boolean~) line::$15 ← ! (boolean~) line::$14
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte~) line::$15 ← (byte) line::x0 - (byte) line::x1
+  (byte) line::xd ← (byte~) line::$15
+  (boolean~) line::$16 ← (byte) line::y0 < (byte) line::y1
+  (boolean~) line::$17 ← ! (boolean~) line::$16
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte~) line::$2 ← (byte) line::x1 - (byte) line::x0
   (byte) line::xd ← (byte~) line::$2
   (boolean~) line::$3 ← (byte) line::y0 < (byte) line::y1
   (boolean~) line::$4 ← ! (boolean~) line::$3
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x ← (byte) line::x0
-  (byte) plot::y ← (byte) line::y0
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x ← (byte) line::x1
-  (byte) plot::y ← (byte) line::y1
-  call plot param-assignment
-  to:line::@18
-line::@18: scope:[line]  from line::@17
-  to:line::@return
-line::@10: scope:[line]  from line::@9
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte~) line::$10 ← (byte) line::y0 - (byte) line::y1
+  (byte) line::yd ← (byte~) line::$10
+  (boolean~) line::$11 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$12 ← ! (boolean~) line::$11
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
   (byte~) line::$5 ← (byte) line::y1 - (byte) line::y0
   (byte) line::yd ← (byte~) line::$5
   (boolean~) line::$6 ← (byte) line::yd < (byte) line::xd
   (boolean~) line::$7 ← ! (boolean~) line::$6
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x ← (byte) line::x0
-  (byte) plot::y ← (byte) line::y0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x ← (byte) line::x1
-  (byte) plot::y ← (byte) line::y1
-  call plot param-assignment
-  to:line::@20
-line::@20: scope:[line]  from line::@19
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y ← (byte) line::y0
+  (byte) line_ydxi::x ← (byte) line::x0
+  (byte) line_ydxi::y1 ← (byte) line::y1
+  (byte) line_ydxi::yd ← (byte) line::yd
+  (byte) line_ydxi::xd ← (byte) line::xd
+  call line_ydxi param-assignment
+  to:line::@29
+line::@29: scope:[line]  from line::@3
   to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x ← (byte) line::x0
   (byte) line_xdyi::y ← (byte) line::y0
   (byte) line_xdyi::x1 ← (byte) line::x1
   (byte) line_xdyi::xd ← (byte) line::xd
   (byte) line_xdyi::yd ← (byte) line::yd
   call line_xdyi param-assignment
-  to:line::@21
-line::@21: scope:[line]  from line::@11
+  to:line::@30
+line::@30: scope:[line]  from line::@17
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x ← (byte) line::x0
-  (byte) plot::y ← (byte) line::y0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x ← (byte) line::x1
-  (byte) plot::y ← (byte) line::y1
-  call plot param-assignment
-  to:line::@23
-line::@23: scope:[line]  from line::@22
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y ← (byte) line::y1
+  (byte) line_ydxd::x ← (byte) line::x1
+  (byte) line_ydxd::y1 ← (byte) line::y0
+  (byte) line_ydxd::yd ← (byte) line::yd
+  (byte) line_ydxd::xd ← (byte) line::xd
+  call line_ydxd param-assignment
+  to:line::@31
+line::@31: scope:[line]  from line::@6
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x ← (byte) line::x0
-  (byte) plot::y ← (byte) line::y0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x ← (byte) line::x0
+  (byte) line_xdyd::y ← (byte) line::y0
+  (byte) line_xdyd::x1 ← (byte) line::x1
+  (byte) line_xdyd::xd ← (byte) line::xd
+  (byte) line_xdyd::yd ← (byte) line::yd
+  call line_xdyd param-assignment
+  to:line::@32
+line::@32: scope:[line]  from line::@20
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte~) line::$23 ← (byte) line::y0 - (byte) line::y1
+  (byte) line::yd ← (byte~) line::$23
+  (boolean~) line::$24 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$25 ← ! (boolean~) line::$24
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte~) line::$18 ← (byte) line::y1 - (byte) line::y0
+  (byte) line::yd ← (byte~) line::$18
+  (boolean~) line::$19 ← (byte) line::yd < (byte) line::xd
+  (boolean~) line::$20 ← ! (boolean~) line::$19
+  if((boolean~) line::$20) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x ← (byte) line::x1
-  (byte) plot::y ← (byte) line::y1
-  call plot param-assignment
-  to:line::@25
-line::@25: scope:[line]  from line::@24
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y ← (byte) line::y0
+  (byte) line_ydxd::x ← (byte) line::x0
+  (byte) line_ydxd::y1 ← (byte) line::y1
+  (byte) line_ydxd::yd ← (byte) line::yd
+  (byte) line_ydxd::xd ← (byte) line::xd
+  call line_ydxd param-assignment
+  to:line::@33
+line::@33: scope:[line]  from line::@10
   to:line::@return
-line::@return: scope:[line]  from line::@18 line::@20 line::@21 line::@23 line::@25
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x ← (byte) line::x1
+  (byte) line_xdyd::y ← (byte) line::y1
+  (byte) line_xdyd::x1 ← (byte) line::x0
+  (byte) line_xdyd::xd ← (byte) line::xd
+  (byte) line_xdyd::yd ← (byte) line::yd
+  call line_xdyd param-assignment
+  to:line::@34
+line::@34: scope:[line]  from line::@24
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y ← (byte) line::y1
+  (byte) line_ydxi::x ← (byte) line::x1
+  (byte) line_ydxi::y1 ← (byte) line::y0
+  (byte) line_ydxi::yd ← (byte) line::yd
+  (byte) line_ydxi::xd ← (byte) line::xd
+  call line_ydxi param-assignment
+  to:line::@35
+line::@35: scope:[line]  from line::@13
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x ← (byte) line::x1
+  (byte) line_xdyi::y ← (byte) line::y1
+  (byte) line_xdyi::x1 ← (byte) line::x0
+  (byte) line_xdyi::xd ← (byte) line::xd
+  (byte) line_xdyi::yd ← (byte) line::yd
+  call line_xdyi param-assignment
+  to:line::@36
+line::@36: scope:[line]  from line::@27
+  to:line::@return
+line::@return: scope:[line]  from line::@29 line::@30 line::@31 line::@32 line::@33 line::@34 line::@35 line::@36
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
   (byte~) line_xdyi::$0 ← (byte) line_xdyi::yd >> (byte) 1
   (byte) line_xdyi::e ← (byte~) line_xdyi::$0
   to:line_xdyi::@1
@@ -1229,7 +1744,103 @@ line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte~) line_xdyd::$0 ← (byte) line_xdyd::yd >> (byte) 1
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$0
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) plot::x ← (byte) line_xdyd::x
+  (byte) plot::y ← (byte) line_xdyd::y
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte~) line_xdyd::$2 ← (byte) line_xdyd::x + (byte) 1
+  (byte) line_xdyd::x ← (byte~) line_xdyd::$2
+  (byte~) line_xdyd::$3 ← (byte) line_xdyd::e + (byte) line_xdyd::yd
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$3
+  (boolean~) line_xdyd::$4 ← (byte) line_xdyd::xd < (byte) line_xdyd::e
+  (boolean~) line_xdyd::$5 ← ! (boolean~) line_xdyd::$4
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte~) line_xdyd::$6 ← (byte) line_xdyd::y - (byte) 1
+  (byte) line_xdyd::y ← (byte~) line_xdyd::$6
+  (byte~) line_xdyd::$7 ← (byte) line_xdyd::e - (byte) line_xdyd::xd
+  (byte) line_xdyd::e ← (byte~) line_xdyd::$7
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte~) line_ydxi::$0 ← (byte) line_ydxi::xd >> (byte) 1
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$0
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) plot::x ← (byte) line_ydxi::x
+  (byte) plot::y ← (byte) line_ydxi::y
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte~) line_ydxi::$2 ← (byte) line_ydxi::y + (byte) 1
+  (byte) line_ydxi::y ← (byte~) line_ydxi::$2
+  (byte~) line_ydxi::$3 ← (byte) line_ydxi::e + (byte) line_ydxi::xd
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$3
+  (boolean~) line_ydxi::$4 ← (byte) line_ydxi::yd < (byte) line_ydxi::e
+  (boolean~) line_ydxi::$5 ← ! (boolean~) line_ydxi::$4
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte~) line_ydxi::$6 ← (byte) line_ydxi::x + (byte) 1
+  (byte) line_ydxi::x ← (byte~) line_ydxi::$6
+  (byte~) line_ydxi::$7 ← (byte) line_ydxi::e - (byte) line_ydxi::yd
+  (byte) line_ydxi::e ← (byte~) line_ydxi::$7
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte~) line_ydxd::$0 ← (byte) line_ydxd::xd >> (byte) 1
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$0
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) plot::x ← (byte) line_ydxd::x
+  (byte) plot::y ← (byte) line_ydxd::y
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte~) line_ydxd::$2 ← (byte) line_ydxd::y + (byte) 1
+  (byte) line_ydxd::y ← (byte~) line_ydxd::$2
+  (byte~) line_ydxd::$3 ← (byte) line_ydxd::e + (byte) line_ydxd::xd
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$3
+  (boolean~) line_ydxd::$4 ← (byte) line_ydxd::yd < (byte) line_ydxd::e
+  (boolean~) line_ydxd::$5 ← ! (boolean~) line_ydxd::$4
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte~) line_ydxd::$6 ← (byte) line_ydxd::x - (byte) 1
+  (byte) line_ydxd::x ← (byte~) line_ydxd::$6
+  (byte~) line_ydxd::$7 ← (byte) line_ydxd::e - (byte) line_ydxd::yd
+  (byte) line_ydxd::e ← (byte~) line_ydxd::$7
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
   (byte*) plot::plotter_x ← (byte) 0
   (byte*) plot::plotter_y ← (byte) 0
   (byte~) plot::$0 ← (byte[]) plot_xhi *idx (byte) plot::x
@@ -1325,12 +1936,12 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
-  to:@8
-@8: scope:[]  from @7
+  to:@11
+@11: scope:[]  from @10
   to:@end
-@end: scope:[]  from @8
+@end: scope:[]  from @11
 
 Completing Phi functions...
 Completing Phi functions...
@@ -1340,6 +1951,9 @@ Completing Phi functions...
 Completing Phi functions...
 Completing Phi functions...
 Completing Phi functions...
+Completing Phi functions...
+Completing Phi functions...
+Completing Phi functions...
 CONTROL FLOW GRAPH SSA
 @begin: scope:[]  from
   (byte*) COLS#0 ← (word) 55296
@@ -1366,25 +1980,25 @@ CONTROL FLOW GRAPH SSA
   (byte[]) lines_x#0 ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y#0 ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt#0 ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
-  (byte[]) plot_yhi#32 ← phi( @7/(byte[]) plot_yhi#34 )
-  (byte[]) plot_ylo#32 ← phi( @7/(byte[]) plot_ylo#34 )
-  (byte) lines_cnt#8 ← phi( @7/(byte) lines_cnt#9 )
-  (byte[]) lines_y#8 ← phi( @7/(byte[]) lines_y#9 )
-  (byte[]) lines_x#8 ← phi( @7/(byte[]) lines_x#9 )
-  (byte*) SCREEN#5 ← phi( @7/(byte*) SCREEN#6 )
-  (byte[]) plot_bit#21 ← phi( @7/(byte[]) plot_bit#26 )
-  (byte[]) plot_xhi#21 ← phi( @7/(byte[]) plot_xhi#26 )
-  (byte[]) plot_xlo#21 ← phi( @7/(byte[]) plot_xlo#26 )
-  (byte*) BITMAP#6 ← phi( @7/(byte*) BITMAP#7 )
-  (byte*) D018#1 ← phi( @7/(byte*) D018#2 )
-  (byte*) D011#1 ← phi( @7/(byte*) D011#2 )
-  (byte) RSEL#1 ← phi( @7/(byte) RSEL#2 )
-  (byte) DEN#1 ← phi( @7/(byte) DEN#2 )
-  (byte) BMM#1 ← phi( @7/(byte) BMM#2 )
-  (byte*) FGCOL#1 ← phi( @7/(byte*) FGCOL#2 )
-  (byte*) BGCOL#1 ← phi( @7/(byte*) BGCOL#2 )
+  to:@10
+main: scope:[main]  from @10
+  (byte[]) plot_yhi#45 ← phi( @10/(byte[]) plot_yhi#47 )
+  (byte[]) plot_ylo#45 ← phi( @10/(byte[]) plot_ylo#47 )
+  (byte) lines_cnt#8 ← phi( @10/(byte) lines_cnt#9 )
+  (byte[]) lines_y#8 ← phi( @10/(byte[]) lines_y#9 )
+  (byte[]) lines_x#8 ← phi( @10/(byte[]) lines_x#9 )
+  (byte*) SCREEN#5 ← phi( @10/(byte*) SCREEN#6 )
+  (byte[]) plot_bit#19 ← phi( @10/(byte[]) plot_bit#36 )
+  (byte[]) plot_xhi#19 ← phi( @10/(byte[]) plot_xhi#36 )
+  (byte[]) plot_xlo#19 ← phi( @10/(byte[]) plot_xlo#36 )
+  (byte*) BITMAP#6 ← phi( @10/(byte*) BITMAP#7 )
+  (byte*) D018#1 ← phi( @10/(byte*) D018#2 )
+  (byte*) D011#1 ← phi( @10/(byte*) D011#2 )
+  (byte) RSEL#1 ← phi( @10/(byte) RSEL#2 )
+  (byte) DEN#1 ← phi( @10/(byte) DEN#2 )
+  (byte) BMM#1 ← phi( @10/(byte) BMM#2 )
+  (byte*) FGCOL#1 ← phi( @10/(byte*) FGCOL#2 )
+  (byte*) BGCOL#1 ← phi( @10/(byte*) BGCOL#2 )
   *((byte*) BGCOL#1) ← (byte) 0
   *((byte*) FGCOL#1) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM#1 | (byte) DEN#1
@@ -1395,44 +2009,44 @@ main: scope:[main]  from @7
   call init_screen param-assignment
   to:main::@3
 main::@3: scope:[main]  from main
-  (byte[]) plot_yhi#31 ← phi( main/(byte[]) plot_yhi#32 )
-  (byte[]) plot_ylo#31 ← phi( main/(byte[]) plot_ylo#32 )
+  (byte[]) plot_yhi#44 ← phi( main/(byte[]) plot_yhi#45 )
+  (byte[]) plot_ylo#44 ← phi( main/(byte[]) plot_ylo#45 )
   (byte) lines_cnt#7 ← phi( main/(byte) lines_cnt#8 )
   (byte[]) lines_y#7 ← phi( main/(byte[]) lines_y#8 )
   (byte[]) lines_x#7 ← phi( main/(byte[]) lines_x#8 )
-  (byte[]) plot_bit#19 ← phi( main/(byte[]) plot_bit#21 )
-  (byte[]) plot_xhi#19 ← phi( main/(byte[]) plot_xhi#21 )
+  (byte[]) plot_bit#17 ← phi( main/(byte[]) plot_bit#19 )
+  (byte[]) plot_xhi#17 ← phi( main/(byte[]) plot_xhi#19 )
   (byte*) BITMAP#8 ← phi( main/(byte*) BITMAP#6 )
-  (byte[]) plot_xlo#19 ← phi( main/(byte[]) plot_xlo#21 )
+  (byte[]) plot_xlo#17 ← phi( main/(byte[]) plot_xlo#19 )
   call init_plot_tables param-assignment
   to:main::@4
 main::@4: scope:[main]  from main::@3
-  (byte[]) plot_bit#31 ← phi( main::@3/(byte[]) plot_bit#19 )
-  (byte[]) plot_ylo#35 ← phi( main::@3/(byte[]) plot_ylo#31 )
-  (byte[]) plot_yhi#35 ← phi( main::@3/(byte[]) plot_yhi#31 )
-  (byte[]) plot_xlo#31 ← phi( main::@3/(byte[]) plot_xlo#19 )
-  (byte[]) plot_xhi#31 ← phi( main::@3/(byte[]) plot_xhi#19 )
+  (byte[]) plot_bit#48 ← phi( main::@3/(byte[]) plot_bit#17 )
+  (byte[]) plot_ylo#52 ← phi( main::@3/(byte[]) plot_ylo#44 )
+  (byte[]) plot_yhi#52 ← phi( main::@3/(byte[]) plot_yhi#44 )
+  (byte[]) plot_xlo#48 ← phi( main::@3/(byte[]) plot_xlo#17 )
+  (byte[]) plot_xhi#48 ← phi( main::@3/(byte[]) plot_xhi#17 )
   (byte) lines_cnt#5 ← phi( main::@3/(byte) lines_cnt#7 )
   (byte[]) lines_y#5 ← phi( main::@3/(byte[]) lines_y#7 )
   (byte[]) lines_x#5 ← phi( main::@3/(byte[]) lines_x#7 )
   to:main::@1
 main::@1: scope:[main]  from main::@4 main::@5
-  (byte[]) plot_bit#30 ← phi( main::@4/(byte[]) plot_bit#31 main::@5/(byte[]) plot_bit#32 )
-  (byte[]) plot_ylo#33 ← phi( main::@4/(byte[]) plot_ylo#35 main::@5/(byte[]) plot_ylo#36 )
-  (byte[]) plot_yhi#33 ← phi( main::@4/(byte[]) plot_yhi#35 main::@5/(byte[]) plot_yhi#36 )
-  (byte[]) plot_xlo#30 ← phi( main::@4/(byte[]) plot_xlo#31 main::@5/(byte[]) plot_xlo#32 )
-  (byte[]) plot_xhi#30 ← phi( main::@4/(byte[]) plot_xhi#31 main::@5/(byte[]) plot_xhi#32 )
+  (byte[]) plot_bit#47 ← phi( main::@4/(byte[]) plot_bit#48 main::@5/(byte[]) plot_bit#49 )
+  (byte[]) plot_ylo#51 ← phi( main::@4/(byte[]) plot_ylo#52 main::@5/(byte[]) plot_ylo#53 )
+  (byte[]) plot_yhi#51 ← phi( main::@4/(byte[]) plot_yhi#52 main::@5/(byte[]) plot_yhi#53 )
+  (byte[]) plot_xlo#47 ← phi( main::@4/(byte[]) plot_xlo#48 main::@5/(byte[]) plot_xlo#49 )
+  (byte[]) plot_xhi#47 ← phi( main::@4/(byte[]) plot_xhi#48 main::@5/(byte[]) plot_xhi#49 )
   (byte) lines_cnt#4 ← phi( main::@4/(byte) lines_cnt#5 main::@5/(byte) lines_cnt#6 )
   (byte[]) lines_y#4 ← phi( main::@4/(byte[]) lines_y#5 main::@5/(byte[]) lines_y#6 )
   (byte[]) lines_x#4 ← phi( main::@4/(byte[]) lines_x#5 main::@5/(byte[]) lines_x#6 )
   call lines param-assignment
   to:main::@5
 main::@5: scope:[main]  from main::@1
-  (byte[]) plot_bit#32 ← phi( main::@1/(byte[]) plot_bit#30 )
-  (byte[]) plot_ylo#36 ← phi( main::@1/(byte[]) plot_ylo#33 )
-  (byte[]) plot_yhi#36 ← phi( main::@1/(byte[]) plot_yhi#33 )
-  (byte[]) plot_xlo#32 ← phi( main::@1/(byte[]) plot_xlo#30 )
-  (byte[]) plot_xhi#32 ← phi( main::@1/(byte[]) plot_xhi#30 )
+  (byte[]) plot_bit#49 ← phi( main::@1/(byte[]) plot_bit#47 )
+  (byte[]) plot_ylo#53 ← phi( main::@1/(byte[]) plot_ylo#51 )
+  (byte[]) plot_yhi#53 ← phi( main::@1/(byte[]) plot_yhi#51 )
+  (byte[]) plot_xlo#49 ← phi( main::@1/(byte[]) plot_xlo#47 )
+  (byte[]) plot_xhi#49 ← phi( main::@1/(byte[]) plot_xhi#47 )
   (byte) lines_cnt#6 ← phi( main::@1/(byte) lines_cnt#4 )
   (byte[]) lines_y#6 ← phi( main::@1/(byte[]) lines_y#4 )
   (byte[]) lines_x#6 ← phi( main::@1/(byte[]) lines_x#4 )
@@ -1442,22 +2056,22 @@ main::@return: scope:[main]  from main::@5
   return 
   to:@return
 lines: scope:[lines]  from main::@1
-  (byte[]) plot_bit#28 ← phi( main::@1/(byte[]) plot_bit#30 )
-  (byte[]) plot_ylo#29 ← phi( main::@1/(byte[]) plot_ylo#33 )
-  (byte[]) plot_yhi#29 ← phi( main::@1/(byte[]) plot_yhi#33 )
-  (byte[]) plot_xlo#28 ← phi( main::@1/(byte[]) plot_xlo#30 )
-  (byte[]) plot_xhi#28 ← phi( main::@1/(byte[]) plot_xhi#30 )
+  (byte[]) plot_bit#45 ← phi( main::@1/(byte[]) plot_bit#47 )
+  (byte[]) plot_ylo#49 ← phi( main::@1/(byte[]) plot_ylo#51 )
+  (byte[]) plot_yhi#49 ← phi( main::@1/(byte[]) plot_yhi#51 )
+  (byte[]) plot_xlo#45 ← phi( main::@1/(byte[]) plot_xlo#47 )
+  (byte[]) plot_xhi#45 ← phi( main::@1/(byte[]) plot_xhi#47 )
   (byte) lines_cnt#3 ← phi( main::@1/(byte) lines_cnt#4 )
   (byte[]) lines_y#2 ← phi( main::@1/(byte[]) lines_y#4 )
   (byte[]) lines_x#2 ← phi( main::@1/(byte[]) lines_x#4 )
   (byte) lines::l#0 ← (byte) 0
   to:lines::@1
 lines::@1: scope:[lines]  from lines lines::@3
-  (byte[]) plot_bit#27 ← phi( lines/(byte[]) plot_bit#28 lines::@3/(byte[]) plot_bit#29 )
-  (byte[]) plot_ylo#27 ← phi( lines/(byte[]) plot_ylo#29 lines::@3/(byte[]) plot_ylo#30 )
-  (byte[]) plot_yhi#27 ← phi( lines/(byte[]) plot_yhi#29 lines::@3/(byte[]) plot_yhi#30 )
-  (byte[]) plot_xlo#27 ← phi( lines/(byte[]) plot_xlo#28 lines::@3/(byte[]) plot_xlo#29 )
-  (byte[]) plot_xhi#27 ← phi( lines/(byte[]) plot_xhi#28 lines::@3/(byte[]) plot_xhi#29 )
+  (byte[]) plot_bit#44 ← phi( lines/(byte[]) plot_bit#45 lines::@3/(byte[]) plot_bit#46 )
+  (byte[]) plot_ylo#48 ← phi( lines/(byte[]) plot_ylo#49 lines::@3/(byte[]) plot_ylo#50 )
+  (byte[]) plot_yhi#48 ← phi( lines/(byte[]) plot_yhi#49 lines::@3/(byte[]) plot_yhi#50 )
+  (byte[]) plot_xlo#44 ← phi( lines/(byte[]) plot_xlo#45 lines::@3/(byte[]) plot_xlo#46 )
+  (byte[]) plot_xhi#44 ← phi( lines/(byte[]) plot_xhi#45 lines::@3/(byte[]) plot_xhi#46 )
   (byte) lines_cnt#2 ← phi( lines/(byte) lines_cnt#3 lines::@3/(byte) lines_cnt#1 )
   (byte[]) lines_y#1 ← phi( lines/(byte[]) lines_y#2 lines::@3/(byte[]) lines_y#3 )
   (byte) lines::l#2 ← phi( lines/(byte) lines::l#0 lines::@3/(byte) lines::l#1 )
@@ -1475,11 +2089,11 @@ lines::@1: scope:[lines]  from lines lines::@3
   call line param-assignment
   to:lines::@3
 lines::@3: scope:[lines]  from lines::@1
-  (byte[]) plot_bit#29 ← phi( lines::@1/(byte[]) plot_bit#27 )
-  (byte[]) plot_ylo#30 ← phi( lines::@1/(byte[]) plot_ylo#27 )
-  (byte[]) plot_yhi#30 ← phi( lines::@1/(byte[]) plot_yhi#27 )
-  (byte[]) plot_xlo#29 ← phi( lines::@1/(byte[]) plot_xlo#27 )
-  (byte[]) plot_xhi#29 ← phi( lines::@1/(byte[]) plot_xhi#27 )
+  (byte[]) plot_bit#46 ← phi( lines::@1/(byte[]) plot_bit#44 )
+  (byte[]) plot_ylo#50 ← phi( lines::@1/(byte[]) plot_ylo#48 )
+  (byte[]) plot_yhi#50 ← phi( lines::@1/(byte[]) plot_yhi#48 )
+  (byte[]) plot_xlo#46 ← phi( lines::@1/(byte[]) plot_xlo#44 )
+  (byte[]) plot_xhi#46 ← phi( lines::@1/(byte[]) plot_xhi#44 )
   (byte[]) lines_y#3 ← phi( lines::@1/(byte[]) lines_y#1 )
   (byte[]) lines_x#3 ← phi( lines::@1/(byte[]) lines_x#1 )
   (byte) lines_cnt#1 ← phi( lines::@1/(byte) lines_cnt#2 )
@@ -1492,43 +2106,43 @@ lines::@return: scope:[lines]  from lines::@3
   return 
   to:@return
 line: scope:[line]  from lines::@1
-  (byte[]) plot_bit#22 ← phi( lines::@1/(byte[]) plot_bit#27 )
-  (byte[]) plot_ylo#21 ← phi( lines::@1/(byte[]) plot_ylo#27 )
-  (byte[]) plot_yhi#21 ← phi( lines::@1/(byte[]) plot_yhi#27 )
-  (byte[]) plot_xlo#22 ← phi( lines::@1/(byte[]) plot_xlo#27 )
-  (byte[]) plot_xhi#22 ← phi( lines::@1/(byte[]) plot_xhi#27 )
-  (byte) line::y1#8 ← phi( lines::@1/(byte) line::y1#0 )
-  (byte) line::y0#9 ← phi( lines::@1/(byte) line::y0#0 )
+  (byte[]) plot_bit#43 ← phi( lines::@1/(byte[]) plot_bit#44 )
+  (byte[]) plot_ylo#46 ← phi( lines::@1/(byte[]) plot_ylo#48 )
+  (byte[]) plot_yhi#46 ← phi( lines::@1/(byte[]) plot_yhi#48 )
+  (byte[]) plot_xlo#43 ← phi( lines::@1/(byte[]) plot_xlo#44 )
+  (byte[]) plot_xhi#43 ← phi( lines::@1/(byte[]) plot_xhi#44 )
+  (byte) line::y1#13 ← phi( lines::@1/(byte) line::y1#0 )
+  (byte) line::y0#13 ← phi( lines::@1/(byte) line::y0#0 )
   (byte) line::x1#1 ← phi( lines::@1/(byte) line::x1#0 )
   (byte) line::x0#1 ← phi( lines::@1/(byte) line::x0#0 )
   (boolean~) line::$0 ← (byte) line::x0#1 < (byte) line::x1#1
   (boolean~) line::$1 ← ! (boolean~) line::$0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte[]) plot_bit#16 ← phi( line/(byte[]) plot_bit#22 )
-  (byte[]) plot_ylo#16 ← phi( line/(byte[]) plot_ylo#21 )
-  (byte[]) plot_yhi#16 ← phi( line/(byte[]) plot_yhi#21 )
-  (byte[]) plot_xlo#16 ← phi( line/(byte[]) plot_xlo#22 )
-  (byte[]) plot_xhi#16 ← phi( line/(byte[]) plot_xhi#22 )
-  (byte) line::y1#1 ← phi( line/(byte) line::y1#8 )
-  (byte) line::y0#1 ← phi( line/(byte) line::y0#9 )
-  (byte) line::x0#2 ← phi( line/(byte) line::x0#1 )
-  (byte) line::x1#2 ← phi( line/(byte) line::x1#1 )
-  (byte~) line::$13 ← (byte) line::x1#2 - (byte) line::x0#2
-  (byte) line::xd#0 ← (byte~) line::$13
-  (boolean~) line::$14 ← (byte) line::y0#1 < (byte) line::y1#1
-  (boolean~) line::$15 ← ! (boolean~) line::$14
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
-  (byte[]) plot_bit#14 ← phi( line/(byte[]) plot_bit#22 )
-  (byte[]) plot_ylo#14 ← phi( line/(byte[]) plot_ylo#21 )
-  (byte[]) plot_yhi#14 ← phi( line/(byte[]) plot_yhi#21 )
-  (byte[]) plot_xlo#14 ← phi( line/(byte[]) plot_xlo#22 )
-  (byte[]) plot_xhi#14 ← phi( line/(byte[]) plot_xhi#22 )
-  (byte) line::y1#2 ← phi( line/(byte) line::y1#8 )
-  (byte) line::y0#2 ← phi( line/(byte) line::y0#9 )
+line::@1: scope:[line]  from line
+  (byte[]) plot_bit#42 ← phi( line/(byte[]) plot_bit#43 )
+  (byte[]) plot_ylo#43 ← phi( line/(byte[]) plot_ylo#46 )
+  (byte[]) plot_yhi#43 ← phi( line/(byte[]) plot_yhi#46 )
+  (byte[]) plot_xlo#42 ← phi( line/(byte[]) plot_xlo#43 )
+  (byte[]) plot_xhi#42 ← phi( line/(byte[]) plot_xhi#43 )
+  (byte) line::y1#1 ← phi( line/(byte) line::y1#13 )
+  (byte) line::y0#1 ← phi( line/(byte) line::y0#13 )
+  (byte) line::x1#2 ← phi( line/(byte) line::x1#1 )
+  (byte) line::x0#2 ← phi( line/(byte) line::x0#1 )
+  (byte~) line::$15 ← (byte) line::x0#2 - (byte) line::x1#2
+  (byte) line::xd#0 ← (byte~) line::$15
+  (boolean~) line::$16 ← (byte) line::y0#1 < (byte) line::y1#1
+  (boolean~) line::$17 ← ! (boolean~) line::$16
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
+  (byte[]) plot_bit#41 ← phi( line/(byte[]) plot_bit#43 )
+  (byte[]) plot_ylo#42 ← phi( line/(byte[]) plot_ylo#46 )
+  (byte[]) plot_yhi#42 ← phi( line/(byte[]) plot_yhi#46 )
+  (byte[]) plot_xlo#41 ← phi( line/(byte[]) plot_xlo#43 )
+  (byte[]) plot_xhi#41 ← phi( line/(byte[]) plot_xhi#43 )
+  (byte) line::y1#2 ← phi( line/(byte) line::y1#13 )
+  (byte) line::y0#2 ← phi( line/(byte) line::y0#13 )
   (byte) line::x0#3 ← phi( line/(byte) line::x0#1 )
   (byte) line::x1#3 ← phi( line/(byte) line::x1#1 )
   (byte~) line::$2 ← (byte) line::x1#3 - (byte) line::x0#3
@@ -1536,267 +2150,604 @@ line::@9: scope:[line]  from line
   (boolean~) line::$3 ← (byte) line::y0#2 < (byte) line::y1#2
   (boolean~) line::$4 ← ! (boolean~) line::$3
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte[]) plot_bit#6 ← phi( line::@9/(byte[]) plot_bit#14 )
-  (byte[]) plot_ylo#6 ← phi( line::@9/(byte[]) plot_ylo#14 )
-  (byte[]) plot_yhi#6 ← phi( line::@9/(byte[]) plot_yhi#14 )
-  (byte[]) plot_xlo#6 ← phi( line::@9/(byte[]) plot_xlo#14 )
-  (byte[]) plot_xhi#6 ← phi( line::@9/(byte[]) plot_xhi#14 )
-  (byte) line::y1#9 ← phi( line::@9/(byte) line::y1#2 )
-  (byte) line::x1#9 ← phi( line::@9/(byte) line::x1#3 )
-  (byte) line::y0#3 ← phi( line::@9/(byte) line::y0#2 )
-  (byte) line::x0#4 ← phi( line::@9/(byte) line::x0#3 )
-  (byte) plot::x#0 ← (byte) line::x0#4
-  (byte) plot::y#0 ← (byte) line::y0#3
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte[]) plot_bit#4 ← phi( line::@2/(byte[]) plot_bit#6 )
-  (byte[]) plot_ylo#4 ← phi( line::@2/(byte[]) plot_ylo#6 )
-  (byte[]) plot_yhi#4 ← phi( line::@2/(byte[]) plot_yhi#6 )
-  (byte[]) plot_xlo#4 ← phi( line::@2/(byte[]) plot_xlo#6 )
-  (byte[]) plot_xhi#4 ← phi( line::@2/(byte[]) plot_xhi#6 )
-  (byte) line::y1#3 ← phi( line::@2/(byte) line::y1#9 )
-  (byte) line::x1#4 ← phi( line::@2/(byte) line::x1#9 )
-  (byte) plot::x#1 ← (byte) line::x1#4
-  (byte) plot::y#1 ← (byte) line::y1#3
-  call plot param-assignment
-  to:line::@18
-line::@18: scope:[line]  from line::@17
-  to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte[]) plot_bit#15 ← phi( line::@9/(byte[]) plot_bit#14 )
-  (byte[]) plot_ylo#15 ← phi( line::@9/(byte[]) plot_ylo#14 )
-  (byte[]) plot_yhi#15 ← phi( line::@9/(byte[]) plot_yhi#14 )
-  (byte[]) plot_xlo#15 ← phi( line::@9/(byte[]) plot_xlo#14 )
-  (byte[]) plot_xhi#15 ← phi( line::@9/(byte[]) plot_xhi#14 )
-  (byte) line::x1#11 ← phi( line::@9/(byte) line::x1#3 )
-  (byte) line::x0#9 ← phi( line::@9/(byte) line::x0#3 )
-  (byte) line::xd#2 ← phi( line::@9/(byte) line::xd#1 )
-  (byte) line::y0#4 ← phi( line::@9/(byte) line::y0#2 )
-  (byte) line::y1#4 ← phi( line::@9/(byte) line::y1#2 )
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte[]) plot_bit#38 ← phi( line::@15/(byte[]) plot_bit#41 )
+  (byte[]) plot_ylo#38 ← phi( line::@15/(byte[]) plot_ylo#42 )
+  (byte[]) plot_yhi#38 ← phi( line::@15/(byte[]) plot_yhi#42 )
+  (byte[]) plot_xlo#38 ← phi( line::@15/(byte[]) plot_xlo#41 )
+  (byte[]) plot_xhi#38 ← phi( line::@15/(byte[]) plot_xhi#41 )
+  (byte) line::x0#11 ← phi( line::@15/(byte) line::x0#3 )
+  (byte) line::x1#11 ← phi( line::@15/(byte) line::x1#3 )
+  (byte) line::xd#2 ← phi( line::@15/(byte) line::xd#1 )
+  (byte) line::y1#3 ← phi( line::@15/(byte) line::y1#2 )
+  (byte) line::y0#3 ← phi( line::@15/(byte) line::y0#2 )
+  (byte~) line::$10 ← (byte) line::y0#3 - (byte) line::y1#3
+  (byte) line::yd#0 ← (byte~) line::$10
+  (boolean~) line::$11 ← (byte) line::yd#0 < (byte) line::xd#2
+  (boolean~) line::$12 ← ! (boolean~) line::$11
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte[]) plot_bit#37 ← phi( line::@15/(byte[]) plot_bit#41 )
+  (byte[]) plot_ylo#37 ← phi( line::@15/(byte[]) plot_ylo#42 )
+  (byte[]) plot_yhi#37 ← phi( line::@15/(byte[]) plot_yhi#42 )
+  (byte[]) plot_xlo#37 ← phi( line::@15/(byte[]) plot_xlo#41 )
+  (byte[]) plot_xhi#37 ← phi( line::@15/(byte[]) plot_xhi#41 )
+  (byte) line::x1#10 ← phi( line::@15/(byte) line::x1#3 )
+  (byte) line::x0#10 ← phi( line::@15/(byte) line::x0#3 )
+  (byte) line::xd#3 ← phi( line::@15/(byte) line::xd#1 )
+  (byte) line::y0#4 ← phi( line::@15/(byte) line::y0#2 )
+  (byte) line::y1#4 ← phi( line::@15/(byte) line::y1#2 )
   (byte~) line::$5 ← (byte) line::y1#4 - (byte) line::y0#4
-  (byte) line::yd#0 ← (byte~) line::$5
-  (boolean~) line::$6 ← (byte) line::yd#0 < (byte) line::xd#2
+  (byte) line::yd#1 ← (byte~) line::$5
+  (boolean~) line::$6 ← (byte) line::yd#1 < (byte) line::xd#3
   (boolean~) line::$7 ← ! (boolean~) line::$6
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte[]) plot_bit#9 ← phi( line::@10/(byte[]) plot_bit#15 )
-  (byte[]) plot_ylo#9 ← phi( line::@10/(byte[]) plot_ylo#15 )
-  (byte[]) plot_yhi#9 ← phi( line::@10/(byte[]) plot_yhi#15 )
-  (byte[]) plot_xlo#9 ← phi( line::@10/(byte[]) plot_xlo#15 )
-  (byte[]) plot_xhi#9 ← phi( line::@10/(byte[]) plot_xhi#15 )
-  (byte) line::y1#10 ← phi( line::@10/(byte) line::y1#4 )
-  (byte) line::x1#10 ← phi( line::@10/(byte) line::x1#11 )
-  (byte) line::y0#5 ← phi( line::@10/(byte) line::y0#4 )
-  (byte) line::x0#5 ← phi( line::@10/(byte) line::x0#9 )
-  (byte) plot::x#2 ← (byte) line::x0#5
-  (byte) plot::y#2 ← (byte) line::y0#5
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte[]) plot_bit#5 ← phi( line::@3/(byte[]) plot_bit#9 )
-  (byte[]) plot_ylo#5 ← phi( line::@3/(byte[]) plot_ylo#9 )
-  (byte[]) plot_yhi#5 ← phi( line::@3/(byte[]) plot_yhi#9 )
-  (byte[]) plot_xlo#5 ← phi( line::@3/(byte[]) plot_xlo#9 )
-  (byte[]) plot_xhi#5 ← phi( line::@3/(byte[]) plot_xhi#9 )
-  (byte) line::y1#5 ← phi( line::@3/(byte) line::y1#10 )
-  (byte) line::x1#5 ← phi( line::@3/(byte) line::x1#10 )
-  (byte) plot::x#3 ← (byte) line::x1#5
-  (byte) plot::y#3 ← (byte) line::y1#5
-  call plot param-assignment
-  to:line::@20
-line::@20: scope:[line]  from line::@19
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (byte[]) plot_bit#29 ← phi( line::@16/(byte[]) plot_bit#37 )
+  (byte[]) plot_ylo#28 ← phi( line::@16/(byte[]) plot_ylo#37 )
+  (byte[]) plot_yhi#28 ← phi( line::@16/(byte[]) plot_yhi#37 )
+  (byte[]) plot_xlo#29 ← phi( line::@16/(byte[]) plot_xlo#37 )
+  (byte[]) plot_xhi#29 ← phi( line::@16/(byte[]) plot_xhi#37 )
+  (byte) line::xd#4 ← phi( line::@16/(byte) line::xd#3 )
+  (byte) line::yd#4 ← phi( line::@16/(byte) line::yd#1 )
+  (byte) line::y1#5 ← phi( line::@16/(byte) line::y1#4 )
+  (byte) line::x0#4 ← phi( line::@16/(byte) line::x0#10 )
+  (byte) line::y0#5 ← phi( line::@16/(byte) line::y0#4 )
+  (byte) line_ydxi::y#0 ← (byte) line::y0#5
+  (byte) line_ydxi::x#0 ← (byte) line::x0#4
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#5
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#4
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#4
+  call line_ydxi param-assignment
+  to:line::@29
+line::@29: scope:[line]  from line::@3
   to:line::@return
-line::@11: scope:[line]  from line::@10
-  (byte[]) plot_bit#23 ← phi( line::@10/(byte[]) plot_bit#15 )
-  (byte[]) plot_ylo#22 ← phi( line::@10/(byte[]) plot_ylo#15 )
-  (byte[]) plot_yhi#22 ← phi( line::@10/(byte[]) plot_yhi#15 )
-  (byte[]) plot_xlo#23 ← phi( line::@10/(byte[]) plot_xlo#15 )
-  (byte[]) plot_xhi#23 ← phi( line::@10/(byte[]) plot_xhi#15 )
-  (byte) line::yd#1 ← phi( line::@10/(byte) line::yd#0 )
-  (byte) line::xd#3 ← phi( line::@10/(byte) line::xd#2 )
-  (byte) line::x1#6 ← phi( line::@10/(byte) line::x1#11 )
-  (byte) line::y0#6 ← phi( line::@10/(byte) line::y0#4 )
-  (byte) line::x0#6 ← phi( line::@10/(byte) line::x0#9 )
-  (byte) line_xdyi::x#0 ← (byte) line::x0#6
+line::@17: scope:[line]  from line::@16
+  (byte[]) plot_bit#20 ← phi( line::@16/(byte[]) plot_bit#37 )
+  (byte[]) plot_ylo#19 ← phi( line::@16/(byte[]) plot_ylo#37 )
+  (byte[]) plot_yhi#19 ← phi( line::@16/(byte[]) plot_yhi#37 )
+  (byte[]) plot_xlo#20 ← phi( line::@16/(byte[]) plot_xlo#37 )
+  (byte[]) plot_xhi#20 ← phi( line::@16/(byte[]) plot_xhi#37 )
+  (byte) line::yd#5 ← phi( line::@16/(byte) line::yd#1 )
+  (byte) line::xd#5 ← phi( line::@16/(byte) line::xd#3 )
+  (byte) line::x1#4 ← phi( line::@16/(byte) line::x1#10 )
+  (byte) line::y0#6 ← phi( line::@16/(byte) line::y0#4 )
+  (byte) line::x0#5 ← phi( line::@16/(byte) line::x0#10 )
+  (byte) line_xdyi::x#0 ← (byte) line::x0#5
   (byte) line_xdyi::y#0 ← (byte) line::y0#6
-  (byte) line_xdyi::x1#0 ← (byte) line::x1#6
-  (byte) line_xdyi::xd#0 ← (byte) line::xd#3
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
+  (byte) line_xdyi::x1#0 ← (byte) line::x1#4
+  (byte) line_xdyi::xd#0 ← (byte) line::xd#5
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#5
   call line_xdyi param-assignment
-  to:line::@21
-line::@21: scope:[line]  from line::@11
+  to:line::@30
+line::@30: scope:[line]  from line::@17
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte[]) plot_bit#10 ← phi( line::@1/(byte[]) plot_bit#16 )
-  (byte[]) plot_ylo#10 ← phi( line::@1/(byte[]) plot_ylo#16 )
-  (byte[]) plot_yhi#10 ← phi( line::@1/(byte[]) plot_yhi#16 )
-  (byte[]) plot_xlo#10 ← phi( line::@1/(byte[]) plot_xlo#16 )
-  (byte[]) plot_xhi#10 ← phi( line::@1/(byte[]) plot_xhi#16 )
-  (byte) line::y1#11 ← phi( line::@1/(byte) line::y1#1 )
-  (byte) line::x1#12 ← phi( line::@1/(byte) line::x1#2 )
-  (byte) line::y0#7 ← phi( line::@1/(byte) line::y0#1 )
-  (byte) line::x0#7 ← phi( line::@1/(byte) line::x0#2 )
-  (byte) plot::x#4 ← (byte) line::x0#7
-  (byte) plot::y#4 ← (byte) line::y0#7
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte[]) plot_bit#7 ← phi( line::@7/(byte[]) plot_bit#10 )
-  (byte[]) plot_ylo#7 ← phi( line::@7/(byte[]) plot_ylo#10 )
-  (byte[]) plot_yhi#7 ← phi( line::@7/(byte[]) plot_yhi#10 )
-  (byte[]) plot_xlo#7 ← phi( line::@7/(byte[]) plot_xlo#10 )
-  (byte[]) plot_xhi#7 ← phi( line::@7/(byte[]) plot_xhi#10 )
-  (byte) line::y1#6 ← phi( line::@7/(byte) line::y1#11 )
-  (byte) line::x1#7 ← phi( line::@7/(byte) line::x1#12 )
-  (byte) plot::x#5 ← (byte) line::x1#7
-  (byte) plot::y#5 ← (byte) line::y1#6
-  call plot param-assignment
-  to:line::@23
-line::@23: scope:[line]  from line::@22
+line::@6: scope:[line]  from line::@2
+  (byte[]) plot_bit#33 ← phi( line::@2/(byte[]) plot_bit#38 )
+  (byte[]) plot_ylo#32 ← phi( line::@2/(byte[]) plot_ylo#38 )
+  (byte[]) plot_yhi#32 ← phi( line::@2/(byte[]) plot_yhi#38 )
+  (byte[]) plot_xlo#33 ← phi( line::@2/(byte[]) plot_xlo#38 )
+  (byte[]) plot_xhi#33 ← phi( line::@2/(byte[]) plot_xhi#38 )
+  (byte) line::xd#6 ← phi( line::@2/(byte) line::xd#2 )
+  (byte) line::yd#6 ← phi( line::@2/(byte) line::yd#0 )
+  (byte) line::y0#7 ← phi( line::@2/(byte) line::y0#3 )
+  (byte) line::x1#5 ← phi( line::@2/(byte) line::x1#11 )
+  (byte) line::y1#6 ← phi( line::@2/(byte) line::y1#3 )
+  (byte) line_ydxd::y#0 ← (byte) line::y1#6
+  (byte) line_ydxd::x#0 ← (byte) line::x1#5
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#7
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#6
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#6
+  call line_ydxd param-assignment
+  to:line::@31
+line::@31: scope:[line]  from line::@6
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte[]) plot_bit#3 ← phi( line::@1/(byte[]) plot_bit#16 )
-  (byte[]) plot_ylo#3 ← phi( line::@1/(byte[]) plot_ylo#16 )
-  (byte[]) plot_yhi#3 ← phi( line::@1/(byte[]) plot_yhi#16 )
-  (byte[]) plot_xlo#3 ← phi( line::@1/(byte[]) plot_xlo#16 )
-  (byte[]) plot_xhi#3 ← phi( line::@1/(byte[]) plot_xhi#16 )
-  (byte) line::y1#12 ← phi( line::@1/(byte) line::y1#1 )
+line::@20: scope:[line]  from line::@2
+  (byte[]) plot_bit#24 ← phi( line::@2/(byte[]) plot_bit#38 )
+  (byte[]) plot_ylo#23 ← phi( line::@2/(byte[]) plot_ylo#38 )
+  (byte[]) plot_yhi#23 ← phi( line::@2/(byte[]) plot_yhi#38 )
+  (byte[]) plot_xlo#24 ← phi( line::@2/(byte[]) plot_xlo#38 )
+  (byte[]) plot_xhi#24 ← phi( line::@2/(byte[]) plot_xhi#38 )
+  (byte) line::yd#7 ← phi( line::@2/(byte) line::yd#0 )
+  (byte) line::xd#7 ← phi( line::@2/(byte) line::xd#2 )
+  (byte) line::x1#6 ← phi( line::@2/(byte) line::x1#11 )
+  (byte) line::y0#8 ← phi( line::@2/(byte) line::y0#3 )
+  (byte) line::x0#6 ← phi( line::@2/(byte) line::x0#11 )
+  (byte) line_xdyd::x#0 ← (byte) line::x0#6
+  (byte) line_xdyd::y#0 ← (byte) line::y0#8
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#6
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#7
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#7
+  call line_xdyd param-assignment
+  to:line::@32
+line::@32: scope:[line]  from line::@20
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte[]) plot_bit#40 ← phi( line::@1/(byte[]) plot_bit#42 )
+  (byte[]) plot_ylo#40 ← phi( line::@1/(byte[]) plot_ylo#43 )
+  (byte[]) plot_yhi#40 ← phi( line::@1/(byte[]) plot_yhi#43 )
+  (byte[]) plot_xlo#40 ← phi( line::@1/(byte[]) plot_xlo#42 )
+  (byte[]) plot_xhi#40 ← phi( line::@1/(byte[]) plot_xhi#42 )
+  (byte) line::x0#13 ← phi( line::@1/(byte) line::x0#2 )
   (byte) line::x1#13 ← phi( line::@1/(byte) line::x1#2 )
-  (byte) line::y0#8 ← phi( line::@1/(byte) line::y0#1 )
-  (byte) line::x0#8 ← phi( line::@1/(byte) line::x0#2 )
-  (byte) plot::x#6 ← (byte) line::x0#8
-  (byte) plot::y#6 ← (byte) line::y0#8
-  call plot param-assignment
+  (byte) line::xd#8 ← phi( line::@1/(byte) line::xd#0 )
+  (byte) line::y1#7 ← phi( line::@1/(byte) line::y1#1 )
+  (byte) line::y0#9 ← phi( line::@1/(byte) line::y0#1 )
+  (byte~) line::$23 ← (byte) line::y0#9 - (byte) line::y1#7
+  (byte) line::yd#2 ← (byte~) line::$23
+  (boolean~) line::$24 ← (byte) line::yd#2 < (byte) line::xd#8
+  (boolean~) line::$25 ← ! (boolean~) line::$24
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte[]) plot_bit#39 ← phi( line::@1/(byte[]) plot_bit#42 )
+  (byte[]) plot_ylo#39 ← phi( line::@1/(byte[]) plot_ylo#43 )
+  (byte[]) plot_yhi#39 ← phi( line::@1/(byte[]) plot_yhi#43 )
+  (byte[]) plot_xlo#39 ← phi( line::@1/(byte[]) plot_xlo#42 )
+  (byte[]) plot_xhi#39 ← phi( line::@1/(byte[]) plot_xhi#42 )
+  (byte) line::x1#12 ← phi( line::@1/(byte) line::x1#2 )
+  (byte) line::x0#12 ← phi( line::@1/(byte) line::x0#2 )
+  (byte) line::xd#9 ← phi( line::@1/(byte) line::xd#0 )
+  (byte) line::y0#10 ← phi( line::@1/(byte) line::y0#1 )
+  (byte) line::y1#8 ← phi( line::@1/(byte) line::y1#1 )
+  (byte~) line::$18 ← (byte) line::y1#8 - (byte) line::y0#10
+  (byte) line::yd#3 ← (byte~) line::$18
+  (boolean~) line::$19 ← (byte) line::yd#3 < (byte) line::xd#9
+  (boolean~) line::$20 ← ! (boolean~) line::$19
+  if((boolean~) line::$20) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte[]) plot_bit#8 ← phi( line::@15/(byte[]) plot_bit#3 )
-  (byte[]) plot_ylo#8 ← phi( line::@15/(byte[]) plot_ylo#3 )
-  (byte[]) plot_yhi#8 ← phi( line::@15/(byte[]) plot_yhi#3 )
-  (byte[]) plot_xlo#8 ← phi( line::@15/(byte[]) plot_xlo#3 )
-  (byte[]) plot_xhi#8 ← phi( line::@15/(byte[]) plot_xhi#3 )
-  (byte) line::y1#7 ← phi( line::@15/(byte) line::y1#12 )
-  (byte) line::x1#8 ← phi( line::@15/(byte) line::x1#13 )
-  (byte) plot::x#7 ← (byte) line::x1#8
-  (byte) plot::y#7 ← (byte) line::y1#7
-  call plot param-assignment
-  to:line::@25
-line::@25: scope:[line]  from line::@24
+line::@10: scope:[line]  from line::@23
+  (byte[]) plot_bit#32 ← phi( line::@23/(byte[]) plot_bit#39 )
+  (byte[]) plot_ylo#31 ← phi( line::@23/(byte[]) plot_ylo#39 )
+  (byte[]) plot_yhi#31 ← phi( line::@23/(byte[]) plot_yhi#39 )
+  (byte[]) plot_xlo#32 ← phi( line::@23/(byte[]) plot_xlo#39 )
+  (byte[]) plot_xhi#32 ← phi( line::@23/(byte[]) plot_xhi#39 )
+  (byte) line::xd#10 ← phi( line::@23/(byte) line::xd#9 )
+  (byte) line::yd#8 ← phi( line::@23/(byte) line::yd#3 )
+  (byte) line::y1#9 ← phi( line::@23/(byte) line::y1#8 )
+  (byte) line::x0#7 ← phi( line::@23/(byte) line::x0#12 )
+  (byte) line::y0#11 ← phi( line::@23/(byte) line::y0#10 )
+  (byte) line_ydxd::y#1 ← (byte) line::y0#11
+  (byte) line_ydxd::x#1 ← (byte) line::x0#7
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#9
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#8
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#10
+  call line_ydxd param-assignment
+  to:line::@33
+line::@33: scope:[line]  from line::@10
   to:line::@return
-line::@return: scope:[line]  from line::@18 line::@20 line::@21 line::@23 line::@25
+line::@24: scope:[line]  from line::@23
+  (byte[]) plot_bit#25 ← phi( line::@23/(byte[]) plot_bit#39 )
+  (byte[]) plot_ylo#24 ← phi( line::@23/(byte[]) plot_ylo#39 )
+  (byte[]) plot_yhi#24 ← phi( line::@23/(byte[]) plot_yhi#39 )
+  (byte[]) plot_xlo#25 ← phi( line::@23/(byte[]) plot_xlo#39 )
+  (byte[]) plot_xhi#25 ← phi( line::@23/(byte[]) plot_xhi#39 )
+  (byte) line::yd#9 ← phi( line::@23/(byte) line::yd#3 )
+  (byte) line::xd#11 ← phi( line::@23/(byte) line::xd#9 )
+  (byte) line::x0#8 ← phi( line::@23/(byte) line::x0#12 )
+  (byte) line::y1#10 ← phi( line::@23/(byte) line::y1#8 )
+  (byte) line::x1#7 ← phi( line::@23/(byte) line::x1#12 )
+  (byte) line_xdyd::x#1 ← (byte) line::x1#7
+  (byte) line_xdyd::y#1 ← (byte) line::y1#10
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#8
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#11
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#9
+  call line_xdyd param-assignment
+  to:line::@34
+line::@34: scope:[line]  from line::@24
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte[]) plot_bit#28 ← phi( line::@9/(byte[]) plot_bit#40 )
+  (byte[]) plot_ylo#27 ← phi( line::@9/(byte[]) plot_ylo#40 )
+  (byte[]) plot_yhi#27 ← phi( line::@9/(byte[]) plot_yhi#40 )
+  (byte[]) plot_xlo#28 ← phi( line::@9/(byte[]) plot_xlo#40 )
+  (byte[]) plot_xhi#28 ← phi( line::@9/(byte[]) plot_xhi#40 )
+  (byte) line::xd#12 ← phi( line::@9/(byte) line::xd#8 )
+  (byte) line::yd#10 ← phi( line::@9/(byte) line::yd#2 )
+  (byte) line::y0#12 ← phi( line::@9/(byte) line::y0#9 )
+  (byte) line::x1#8 ← phi( line::@9/(byte) line::x1#13 )
+  (byte) line::y1#11 ← phi( line::@9/(byte) line::y1#7 )
+  (byte) line_ydxi::y#1 ← (byte) line::y1#11
+  (byte) line_ydxi::x#1 ← (byte) line::x1#8
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#12
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#12
+  call line_ydxi param-assignment
+  to:line::@35
+line::@35: scope:[line]  from line::@13
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte[]) plot_bit#21 ← phi( line::@9/(byte[]) plot_bit#40 )
+  (byte[]) plot_ylo#20 ← phi( line::@9/(byte[]) plot_ylo#40 )
+  (byte[]) plot_yhi#20 ← phi( line::@9/(byte[]) plot_yhi#40 )
+  (byte[]) plot_xlo#21 ← phi( line::@9/(byte[]) plot_xlo#40 )
+  (byte[]) plot_xhi#21 ← phi( line::@9/(byte[]) plot_xhi#40 )
+  (byte) line::yd#11 ← phi( line::@9/(byte) line::yd#2 )
+  (byte) line::xd#13 ← phi( line::@9/(byte) line::xd#8 )
+  (byte) line::x0#9 ← phi( line::@9/(byte) line::x0#13 )
+  (byte) line::y1#12 ← phi( line::@9/(byte) line::y1#7 )
+  (byte) line::x1#9 ← phi( line::@9/(byte) line::x1#13 )
+  (byte) line_xdyi::x#1 ← (byte) line::x1#9
+  (byte) line_xdyi::y#1 ← (byte) line::y1#12
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#9
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#13
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#11
+  call line_xdyi param-assignment
+  to:line::@36
+line::@36: scope:[line]  from line::@27
+  to:line::@return
+line::@return: scope:[line]  from line::@29 line::@30 line::@31 line::@32 line::@33 line::@34 line::@35 line::@36
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::x1#5 ← phi( line::@11/(byte) line_xdyi::x1#0 )
-  (byte[]) plot_bit#17 ← phi( line::@11/(byte[]) plot_bit#23 )
-  (byte[]) plot_ylo#17 ← phi( line::@11/(byte[]) plot_ylo#22 )
-  (byte[]) plot_yhi#17 ← phi( line::@11/(byte[]) plot_yhi#22 )
-  (byte[]) plot_xlo#17 ← phi( line::@11/(byte[]) plot_xlo#23 )
-  (byte[]) plot_xhi#17 ← phi( line::@11/(byte[]) plot_xhi#23 )
-  (byte) line_xdyi::xd#4 ← phi( line::@11/(byte) line_xdyi::xd#0 )
-  (byte) line_xdyi::y#4 ← phi( line::@11/(byte) line_xdyi::y#0 )
-  (byte) line_xdyi::x#5 ← phi( line::@11/(byte) line_xdyi::x#0 )
-  (byte) line_xdyi::yd#1 ← phi( line::@11/(byte) line_xdyi::yd#0 )
-  (byte~) line_xdyi::$0 ← (byte) line_xdyi::yd#1 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte[]) plot_bit#9 ← phi( line::@17/(byte[]) plot_bit#20 line::@27/(byte[]) plot_bit#21 )
+  (byte[]) plot_ylo#9 ← phi( line::@17/(byte[]) plot_ylo#19 line::@27/(byte[]) plot_ylo#20 )
+  (byte[]) plot_yhi#9 ← phi( line::@17/(byte[]) plot_yhi#19 line::@27/(byte[]) plot_yhi#20 )
+  (byte[]) plot_xlo#9 ← phi( line::@17/(byte[]) plot_xlo#20 line::@27/(byte[]) plot_xlo#21 )
+  (byte[]) plot_xhi#9 ← phi( line::@17/(byte[]) plot_xhi#20 line::@27/(byte[]) plot_xhi#21 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte~) line_xdyi::$0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   (byte) line_xdyi::e#0 ← (byte~) line_xdyi::$0
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
-  (byte) line_xdyi::x1#4 ← phi( line_xdyi/(byte) line_xdyi::x1#5 line_xdyi::@2/(byte) line_xdyi::x1#1 )
-  (byte[]) plot_bit#11 ← phi( line_xdyi/(byte[]) plot_bit#17 line_xdyi::@2/(byte[]) plot_bit#18 )
-  (byte[]) plot_ylo#11 ← phi( line_xdyi/(byte[]) plot_ylo#17 line_xdyi::@2/(byte[]) plot_ylo#18 )
-  (byte[]) plot_yhi#11 ← phi( line_xdyi/(byte[]) plot_yhi#17 line_xdyi::@2/(byte[]) plot_yhi#18 )
-  (byte[]) plot_xlo#11 ← phi( line_xdyi/(byte[]) plot_xlo#17 line_xdyi::@2/(byte[]) plot_xlo#18 )
-  (byte[]) plot_xhi#11 ← phi( line_xdyi/(byte[]) plot_xhi#17 line_xdyi::@2/(byte[]) plot_xhi#18 )
-  (byte) line_xdyi::xd#3 ← phi( line_xdyi/(byte) line_xdyi::xd#4 line_xdyi::@2/(byte) line_xdyi::xd#5 )
-  (byte) line_xdyi::yd#3 ← phi( line_xdyi/(byte) line_xdyi::yd#1 line_xdyi::@2/(byte) line_xdyi::yd#4 )
+  (byte) line_xdyi::x1#5 ← phi( line_xdyi/(byte) line_xdyi::x1#6 line_xdyi::@2/(byte) line_xdyi::x1#2 )
+  (byte[]) plot_bit#4 ← phi( line_xdyi/(byte[]) plot_bit#9 line_xdyi::@2/(byte[]) plot_bit#10 )
+  (byte[]) plot_ylo#4 ← phi( line_xdyi/(byte[]) plot_ylo#9 line_xdyi::@2/(byte[]) plot_ylo#10 )
+  (byte[]) plot_yhi#4 ← phi( line_xdyi/(byte[]) plot_yhi#9 line_xdyi::@2/(byte[]) plot_yhi#10 )
+  (byte[]) plot_xlo#4 ← phi( line_xdyi/(byte[]) plot_xlo#9 line_xdyi::@2/(byte[]) plot_xlo#10 )
+  (byte[]) plot_xhi#4 ← phi( line_xdyi/(byte[]) plot_xhi#9 line_xdyi::@2/(byte[]) plot_xhi#10 )
+  (byte) line_xdyi::xd#4 ← phi( line_xdyi/(byte) line_xdyi::xd#5 line_xdyi::@2/(byte) line_xdyi::xd#6 )
+  (byte) line_xdyi::yd#4 ← phi( line_xdyi/(byte) line_xdyi::yd#2 line_xdyi::@2/(byte) line_xdyi::yd#5 )
   (byte) line_xdyi::e#5 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#4 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#5 line_xdyi::@2/(byte) line_xdyi::x#4 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#5 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte[]) plot_bit#25 ← phi( line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#24 ← phi( line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte[]) plot_yhi#24 ← phi( line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#25 ← phi( line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte[]) plot_xhi#25 ← phi( line_xdyi::@1/(byte[]) plot_xhi#11 )
-  (byte) line_xdyi::y#6 ← phi( line_xdyi::@1/(byte) line_xdyi::y#2 )
-  (byte) line_xdyi::x1#3 ← phi( line_xdyi::@1/(byte) line_xdyi::x1#4 )
-  (byte) line_xdyi::xd#1 ← phi( line_xdyi::@1/(byte) line_xdyi::xd#3 )
-  (byte) line_xdyi::yd#2 ← phi( line_xdyi::@1/(byte) line_xdyi::yd#3 )
+  (byte[]) plot_bit#23 ← phi( line_xdyi::@1/(byte[]) plot_bit#4 )
+  (byte[]) plot_ylo#22 ← phi( line_xdyi::@1/(byte[]) plot_ylo#4 )
+  (byte[]) plot_yhi#22 ← phi( line_xdyi::@1/(byte[]) plot_yhi#4 )
+  (byte[]) plot_xlo#23 ← phi( line_xdyi::@1/(byte[]) plot_xlo#4 )
+  (byte[]) plot_xhi#23 ← phi( line_xdyi::@1/(byte[]) plot_xhi#4 )
+  (byte) line_xdyi::y#7 ← phi( line_xdyi::@1/(byte) line_xdyi::y#3 )
+  (byte) line_xdyi::x1#4 ← phi( line_xdyi::@1/(byte) line_xdyi::x1#5 )
+  (byte) line_xdyi::xd#2 ← phi( line_xdyi::@1/(byte) line_xdyi::xd#4 )
+  (byte) line_xdyi::yd#3 ← phi( line_xdyi::@1/(byte) line_xdyi::yd#4 )
   (byte) line_xdyi::e#3 ← phi( line_xdyi::@1/(byte) line_xdyi::e#5 )
-  (byte) line_xdyi::x#3 ← phi( line_xdyi::@1/(byte) line_xdyi::x#2 )
-  (byte~) line_xdyi::$2 ← (byte) line_xdyi::x#3 + (byte) 1
-  (byte) line_xdyi::x#1 ← (byte~) line_xdyi::$2
-  (byte~) line_xdyi::$3 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  (byte) line_xdyi::x#4 ← phi( line_xdyi::@1/(byte) line_xdyi::x#3 )
+  (byte~) line_xdyi::$2 ← (byte) line_xdyi::x#4 + (byte) 1
+  (byte) line_xdyi::x#2 ← (byte~) line_xdyi::$2
+  (byte~) line_xdyi::$3 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#3
   (byte) line_xdyi::e#1 ← (byte~) line_xdyi::$3
-  (boolean~) line_xdyi::$4 ← (byte) line_xdyi::xd#1 < (byte) line_xdyi::e#1
+  (boolean~) line_xdyi::$4 ← (byte) line_xdyi::xd#2 < (byte) line_xdyi::e#1
   (boolean~) line_xdyi::$5 ← ! (boolean~) line_xdyi::$4
   if((boolean~) line_xdyi::$5) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
-  (byte[]) plot_bit#18 ← phi( line_xdyi::@3/(byte[]) plot_bit#24 line_xdyi::@5/(byte[]) plot_bit#25 )
-  (byte[]) plot_ylo#18 ← phi( line_xdyi::@3/(byte[]) plot_ylo#23 line_xdyi::@5/(byte[]) plot_ylo#24 )
-  (byte[]) plot_yhi#18 ← phi( line_xdyi::@3/(byte[]) plot_yhi#23 line_xdyi::@5/(byte[]) plot_yhi#24 )
-  (byte[]) plot_xlo#18 ← phi( line_xdyi::@3/(byte[]) plot_xlo#24 line_xdyi::@5/(byte[]) plot_xlo#25 )
-  (byte[]) plot_xhi#18 ← phi( line_xdyi::@3/(byte[]) plot_xhi#24 line_xdyi::@5/(byte[]) plot_xhi#25 )
-  (byte) line_xdyi::xd#5 ← phi( line_xdyi::@3/(byte) line_xdyi::xd#2 line_xdyi::@5/(byte) line_xdyi::xd#1 )
-  (byte) line_xdyi::yd#4 ← phi( line_xdyi::@3/(byte) line_xdyi::yd#5 line_xdyi::@5/(byte) line_xdyi::yd#2 )
+  (byte[]) plot_bit#10 ← phi( line_xdyi::@3/(byte[]) plot_bit#22 line_xdyi::@5/(byte[]) plot_bit#23 )
+  (byte[]) plot_ylo#10 ← phi( line_xdyi::@3/(byte[]) plot_ylo#21 line_xdyi::@5/(byte[]) plot_ylo#22 )
+  (byte[]) plot_yhi#10 ← phi( line_xdyi::@3/(byte[]) plot_yhi#21 line_xdyi::@5/(byte[]) plot_yhi#22 )
+  (byte[]) plot_xlo#10 ← phi( line_xdyi::@3/(byte[]) plot_xlo#22 line_xdyi::@5/(byte[]) plot_xlo#23 )
+  (byte[]) plot_xhi#10 ← phi( line_xdyi::@3/(byte[]) plot_xhi#22 line_xdyi::@5/(byte[]) plot_xhi#23 )
+  (byte) line_xdyi::xd#6 ← phi( line_xdyi::@3/(byte) line_xdyi::xd#3 line_xdyi::@5/(byte) line_xdyi::xd#2 )
+  (byte) line_xdyi::yd#5 ← phi( line_xdyi::@3/(byte) line_xdyi::yd#6 line_xdyi::@5/(byte) line_xdyi::yd#3 )
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#6 )
-  (byte) line_xdyi::x#4 ← phi( line_xdyi::@3/(byte) line_xdyi::x#6 line_xdyi::@5/(byte) line_xdyi::x#1 )
-  (byte) line_xdyi::x1#1 ← phi( line_xdyi::@3/(byte) line_xdyi::x1#2 line_xdyi::@5/(byte) line_xdyi::x1#3 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#1 + (byte) 1
-  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#4 < (byte~) line_xdyi::$8
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#7 )
+  (byte) line_xdyi::x#5 ← phi( line_xdyi::@3/(byte) line_xdyi::x#7 line_xdyi::@5/(byte) line_xdyi::x#2 )
+  (byte) line_xdyi::x1#2 ← phi( line_xdyi::@3/(byte) line_xdyi::x1#3 line_xdyi::@5/(byte) line_xdyi::x1#4 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#2 + (byte) 1
+  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#5 < (byte~) line_xdyi::$8
   if((boolean~) line_xdyi::$9) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte[]) plot_bit#24 ← phi( line_xdyi::@5/(byte[]) plot_bit#25 )
-  (byte[]) plot_ylo#23 ← phi( line_xdyi::@5/(byte[]) plot_ylo#24 )
-  (byte[]) plot_yhi#23 ← phi( line_xdyi::@5/(byte[]) plot_yhi#24 )
-  (byte[]) plot_xlo#24 ← phi( line_xdyi::@5/(byte[]) plot_xlo#25 )
-  (byte[]) plot_xhi#24 ← phi( line_xdyi::@5/(byte[]) plot_xhi#25 )
-  (byte) line_xdyi::yd#5 ← phi( line_xdyi::@5/(byte) line_xdyi::yd#2 )
-  (byte) line_xdyi::x#6 ← phi( line_xdyi::@5/(byte) line_xdyi::x#1 )
-  (byte) line_xdyi::x1#2 ← phi( line_xdyi::@5/(byte) line_xdyi::x1#3 )
-  (byte) line_xdyi::xd#2 ← phi( line_xdyi::@5/(byte) line_xdyi::xd#1 )
+  (byte[]) plot_bit#22 ← phi( line_xdyi::@5/(byte[]) plot_bit#23 )
+  (byte[]) plot_ylo#21 ← phi( line_xdyi::@5/(byte[]) plot_ylo#22 )
+  (byte[]) plot_yhi#21 ← phi( line_xdyi::@5/(byte[]) plot_yhi#22 )
+  (byte[]) plot_xlo#22 ← phi( line_xdyi::@5/(byte[]) plot_xlo#23 )
+  (byte[]) plot_xhi#22 ← phi( line_xdyi::@5/(byte[]) plot_xhi#23 )
+  (byte) line_xdyi::yd#6 ← phi( line_xdyi::@5/(byte) line_xdyi::yd#3 )
+  (byte) line_xdyi::x#7 ← phi( line_xdyi::@5/(byte) line_xdyi::x#2 )
+  (byte) line_xdyi::x1#3 ← phi( line_xdyi::@5/(byte) line_xdyi::x1#4 )
+  (byte) line_xdyi::xd#3 ← phi( line_xdyi::@5/(byte) line_xdyi::xd#2 )
   (byte) line_xdyi::e#4 ← phi( line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#3 ← phi( line_xdyi::@5/(byte) line_xdyi::y#6 )
-  (byte~) line_xdyi::$6 ← (byte) line_xdyi::y#3 + (byte) 1
-  (byte) line_xdyi::y#1 ← (byte~) line_xdyi::$6
-  (byte~) line_xdyi::$7 ← (byte) line_xdyi::e#4 - (byte) line_xdyi::xd#2
+  (byte) line_xdyi::y#4 ← phi( line_xdyi::@5/(byte) line_xdyi::y#7 )
+  (byte~) line_xdyi::$6 ← (byte) line_xdyi::y#4 + (byte) 1
+  (byte) line_xdyi::y#2 ← (byte~) line_xdyi::$6
+  (byte~) line_xdyi::$7 ← (byte) line_xdyi::e#4 - (byte) line_xdyi::xd#3
   (byte) line_xdyi::e#2 ← (byte~) line_xdyi::$7
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte[]) plot_bit#1 ← phi( line::@15/(byte[]) plot_bit#3 line::@17/(byte[]) plot_bit#4 line::@19/(byte[]) plot_bit#5 line::@2/(byte[]) plot_bit#6 line::@22/(byte[]) plot_bit#7 line::@24/(byte[]) plot_bit#8 line::@3/(byte[]) plot_bit#9 line::@7/(byte[]) plot_bit#10 line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#1 ← phi( line::@15/(byte[]) plot_ylo#3 line::@17/(byte[]) plot_ylo#4 line::@19/(byte[]) plot_ylo#5 line::@2/(byte[]) plot_ylo#6 line::@22/(byte[]) plot_ylo#7 line::@24/(byte[]) plot_ylo#8 line::@3/(byte[]) plot_ylo#9 line::@7/(byte[]) plot_ylo#10 line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte[]) plot_yhi#1 ← phi( line::@15/(byte[]) plot_yhi#3 line::@17/(byte[]) plot_yhi#4 line::@19/(byte[]) plot_yhi#5 line::@2/(byte[]) plot_yhi#6 line::@22/(byte[]) plot_yhi#7 line::@24/(byte[]) plot_yhi#8 line::@3/(byte[]) plot_yhi#9 line::@7/(byte[]) plot_yhi#10 line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#1 ← phi( line::@15/(byte[]) plot_xlo#3 line::@17/(byte[]) plot_xlo#4 line::@19/(byte[]) plot_xlo#5 line::@2/(byte[]) plot_xlo#6 line::@22/(byte[]) plot_xlo#7 line::@24/(byte[]) plot_xlo#8 line::@3/(byte[]) plot_xlo#9 line::@7/(byte[]) plot_xlo#10 line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte[]) plot_xhi#1 ← phi( line::@15/(byte[]) plot_xhi#3 line::@17/(byte[]) plot_xhi#4 line::@19/(byte[]) plot_xhi#5 line::@2/(byte[]) plot_xhi#6 line::@22/(byte[]) plot_xhi#7 line::@24/(byte[]) plot_xhi#8 line::@3/(byte[]) plot_xhi#9 line::@7/(byte[]) plot_xhi#10 line_xdyi::@1/(byte[]) plot_xhi#11 )
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte[]) plot_bit#11 ← phi( line::@20/(byte[]) plot_bit#24 line::@24/(byte[]) plot_bit#25 )
+  (byte[]) plot_ylo#11 ← phi( line::@20/(byte[]) plot_ylo#23 line::@24/(byte[]) plot_ylo#24 )
+  (byte[]) plot_yhi#11 ← phi( line::@20/(byte[]) plot_yhi#23 line::@24/(byte[]) plot_yhi#24 )
+  (byte[]) plot_xlo#11 ← phi( line::@20/(byte[]) plot_xlo#24 line::@24/(byte[]) plot_xlo#25 )
+  (byte[]) plot_xhi#11 ← phi( line::@20/(byte[]) plot_xhi#24 line::@24/(byte[]) plot_xhi#25 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte~) line_xdyd::$0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  (byte) line_xdyd::e#0 ← (byte~) line_xdyd::$0
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::x1#5 ← phi( line_xdyd/(byte) line_xdyd::x1#6 line_xdyd::@2/(byte) line_xdyd::x1#2 )
+  (byte[]) plot_bit#3 ← phi( line_xdyd/(byte[]) plot_bit#11 line_xdyd::@2/(byte[]) plot_bit#12 )
+  (byte[]) plot_ylo#3 ← phi( line_xdyd/(byte[]) plot_ylo#11 line_xdyd::@2/(byte[]) plot_ylo#12 )
+  (byte[]) plot_yhi#3 ← phi( line_xdyd/(byte[]) plot_yhi#11 line_xdyd::@2/(byte[]) plot_yhi#12 )
+  (byte[]) plot_xlo#3 ← phi( line_xdyd/(byte[]) plot_xlo#11 line_xdyd::@2/(byte[]) plot_xlo#12 )
+  (byte[]) plot_xhi#3 ← phi( line_xdyd/(byte[]) plot_xhi#11 line_xdyd::@2/(byte[]) plot_xhi#12 )
+  (byte) line_xdyd::xd#4 ← phi( line_xdyd/(byte) line_xdyd::xd#5 line_xdyd::@2/(byte) line_xdyd::xd#6 )
+  (byte) line_xdyd::yd#4 ← phi( line_xdyd/(byte) line_xdyd::yd#2 line_xdyd::@2/(byte) line_xdyd::yd#5 )
+  (byte) line_xdyd::e#5 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#5 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte[]) plot_bit#27 ← phi( line_xdyd::@1/(byte[]) plot_bit#3 )
+  (byte[]) plot_ylo#26 ← phi( line_xdyd::@1/(byte[]) plot_ylo#3 )
+  (byte[]) plot_yhi#26 ← phi( line_xdyd::@1/(byte[]) plot_yhi#3 )
+  (byte[]) plot_xlo#27 ← phi( line_xdyd::@1/(byte[]) plot_xlo#3 )
+  (byte[]) plot_xhi#27 ← phi( line_xdyd::@1/(byte[]) plot_xhi#3 )
+  (byte) line_xdyd::y#7 ← phi( line_xdyd::@1/(byte) line_xdyd::y#3 )
+  (byte) line_xdyd::x1#4 ← phi( line_xdyd::@1/(byte) line_xdyd::x1#5 )
+  (byte) line_xdyd::xd#2 ← phi( line_xdyd::@1/(byte) line_xdyd::xd#4 )
+  (byte) line_xdyd::yd#3 ← phi( line_xdyd::@1/(byte) line_xdyd::yd#4 )
+  (byte) line_xdyd::e#3 ← phi( line_xdyd::@1/(byte) line_xdyd::e#5 )
+  (byte) line_xdyd::x#4 ← phi( line_xdyd::@1/(byte) line_xdyd::x#3 )
+  (byte~) line_xdyd::$2 ← (byte) line_xdyd::x#4 + (byte) 1
+  (byte) line_xdyd::x#2 ← (byte~) line_xdyd::$2
+  (byte~) line_xdyd::$3 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#3
+  (byte) line_xdyd::e#1 ← (byte~) line_xdyd::$3
+  (boolean~) line_xdyd::$4 ← (byte) line_xdyd::xd#2 < (byte) line_xdyd::e#1
+  (boolean~) line_xdyd::$5 ← ! (boolean~) line_xdyd::$4
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte[]) plot_bit#12 ← phi( line_xdyd::@3/(byte[]) plot_bit#26 line_xdyd::@5/(byte[]) plot_bit#27 )
+  (byte[]) plot_ylo#12 ← phi( line_xdyd::@3/(byte[]) plot_ylo#25 line_xdyd::@5/(byte[]) plot_ylo#26 )
+  (byte[]) plot_yhi#12 ← phi( line_xdyd::@3/(byte[]) plot_yhi#25 line_xdyd::@5/(byte[]) plot_yhi#26 )
+  (byte[]) plot_xlo#12 ← phi( line_xdyd::@3/(byte[]) plot_xlo#26 line_xdyd::@5/(byte[]) plot_xlo#27 )
+  (byte[]) plot_xhi#12 ← phi( line_xdyd::@3/(byte[]) plot_xhi#26 line_xdyd::@5/(byte[]) plot_xhi#27 )
+  (byte) line_xdyd::xd#6 ← phi( line_xdyd::@3/(byte) line_xdyd::xd#3 line_xdyd::@5/(byte) line_xdyd::xd#2 )
+  (byte) line_xdyd::yd#5 ← phi( line_xdyd::@3/(byte) line_xdyd::yd#6 line_xdyd::@5/(byte) line_xdyd::yd#3 )
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#7 )
+  (byte) line_xdyd::x#5 ← phi( line_xdyd::@3/(byte) line_xdyd::x#7 line_xdyd::@5/(byte) line_xdyd::x#2 )
+  (byte) line_xdyd::x1#2 ← phi( line_xdyd::@3/(byte) line_xdyd::x1#3 line_xdyd::@5/(byte) line_xdyd::x1#4 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#2 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x#5 < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte[]) plot_bit#26 ← phi( line_xdyd::@5/(byte[]) plot_bit#27 )
+  (byte[]) plot_ylo#25 ← phi( line_xdyd::@5/(byte[]) plot_ylo#26 )
+  (byte[]) plot_yhi#25 ← phi( line_xdyd::@5/(byte[]) plot_yhi#26 )
+  (byte[]) plot_xlo#26 ← phi( line_xdyd::@5/(byte[]) plot_xlo#27 )
+  (byte[]) plot_xhi#26 ← phi( line_xdyd::@5/(byte[]) plot_xhi#27 )
+  (byte) line_xdyd::yd#6 ← phi( line_xdyd::@5/(byte) line_xdyd::yd#3 )
+  (byte) line_xdyd::x#7 ← phi( line_xdyd::@5/(byte) line_xdyd::x#2 )
+  (byte) line_xdyd::x1#3 ← phi( line_xdyd::@5/(byte) line_xdyd::x1#4 )
+  (byte) line_xdyd::xd#3 ← phi( line_xdyd::@5/(byte) line_xdyd::xd#2 )
+  (byte) line_xdyd::e#4 ← phi( line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#4 ← phi( line_xdyd::@5/(byte) line_xdyd::y#7 )
+  (byte~) line_xdyd::$6 ← (byte) line_xdyd::y#4 - (byte) 1
+  (byte) line_xdyd::y#2 ← (byte~) line_xdyd::$6
+  (byte~) line_xdyd::$7 ← (byte) line_xdyd::e#4 - (byte) line_xdyd::xd#3
+  (byte) line_xdyd::e#2 ← (byte~) line_xdyd::$7
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte[]) plot_bit#13 ← phi( line::@13/(byte[]) plot_bit#28 line::@3/(byte[]) plot_bit#29 )
+  (byte[]) plot_ylo#13 ← phi( line::@13/(byte[]) plot_ylo#27 line::@3/(byte[]) plot_ylo#28 )
+  (byte[]) plot_yhi#13 ← phi( line::@13/(byte[]) plot_yhi#27 line::@3/(byte[]) plot_yhi#28 )
+  (byte[]) plot_xlo#13 ← phi( line::@13/(byte[]) plot_xlo#28 line::@3/(byte[]) plot_xlo#29 )
+  (byte[]) plot_xhi#13 ← phi( line::@13/(byte[]) plot_xhi#28 line::@3/(byte[]) plot_xhi#29 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte~) line_ydxi::$0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  (byte) line_ydxi::e#0 ← (byte~) line_ydxi::$0
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::y1#5 ← phi( line_ydxi/(byte) line_ydxi::y1#6 line_ydxi::@2/(byte) line_ydxi::y1#2 )
+  (byte[]) plot_bit#6 ← phi( line_ydxi/(byte[]) plot_bit#13 line_ydxi::@2/(byte[]) plot_bit#14 )
+  (byte[]) plot_ylo#6 ← phi( line_ydxi/(byte[]) plot_ylo#13 line_ydxi::@2/(byte[]) plot_ylo#14 )
+  (byte[]) plot_yhi#6 ← phi( line_ydxi/(byte[]) plot_yhi#13 line_ydxi::@2/(byte[]) plot_yhi#14 )
+  (byte[]) plot_xlo#6 ← phi( line_ydxi/(byte[]) plot_xlo#13 line_ydxi::@2/(byte[]) plot_xlo#14 )
+  (byte[]) plot_xhi#6 ← phi( line_ydxi/(byte[]) plot_xhi#13 line_ydxi::@2/(byte[]) plot_xhi#14 )
+  (byte) line_ydxi::yd#4 ← phi( line_ydxi/(byte) line_ydxi::yd#5 line_ydxi::@2/(byte) line_ydxi::yd#6 )
+  (byte) line_ydxi::xd#4 ← phi( line_ydxi/(byte) line_ydxi::xd#2 line_ydxi::@2/(byte) line_ydxi::xd#5 )
+  (byte) line_ydxi::e#5 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#5 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte[]) plot_bit#31 ← phi( line_ydxi::@1/(byte[]) plot_bit#6 )
+  (byte[]) plot_ylo#30 ← phi( line_ydxi::@1/(byte[]) plot_ylo#6 )
+  (byte[]) plot_yhi#30 ← phi( line_ydxi::@1/(byte[]) plot_yhi#6 )
+  (byte[]) plot_xlo#31 ← phi( line_ydxi::@1/(byte[]) plot_xlo#6 )
+  (byte[]) plot_xhi#31 ← phi( line_ydxi::@1/(byte[]) plot_xhi#6 )
+  (byte) line_ydxi::x#7 ← phi( line_ydxi::@1/(byte) line_ydxi::x#3 )
+  (byte) line_ydxi::y1#4 ← phi( line_ydxi::@1/(byte) line_ydxi::y1#5 )
+  (byte) line_ydxi::yd#2 ← phi( line_ydxi::@1/(byte) line_ydxi::yd#4 )
+  (byte) line_ydxi::xd#3 ← phi( line_ydxi::@1/(byte) line_ydxi::xd#4 )
+  (byte) line_ydxi::e#3 ← phi( line_ydxi::@1/(byte) line_ydxi::e#5 )
+  (byte) line_ydxi::y#4 ← phi( line_ydxi::@1/(byte) line_ydxi::y#3 )
+  (byte~) line_ydxi::$2 ← (byte) line_ydxi::y#4 + (byte) 1
+  (byte) line_ydxi::y#2 ← (byte~) line_ydxi::$2
+  (byte~) line_ydxi::$3 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#3
+  (byte) line_ydxi::e#1 ← (byte~) line_ydxi::$3
+  (boolean~) line_ydxi::$4 ← (byte) line_ydxi::yd#2 < (byte) line_ydxi::e#1
+  (boolean~) line_ydxi::$5 ← ! (boolean~) line_ydxi::$4
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte[]) plot_bit#14 ← phi( line_ydxi::@3/(byte[]) plot_bit#30 line_ydxi::@5/(byte[]) plot_bit#31 )
+  (byte[]) plot_ylo#14 ← phi( line_ydxi::@3/(byte[]) plot_ylo#29 line_ydxi::@5/(byte[]) plot_ylo#30 )
+  (byte[]) plot_yhi#14 ← phi( line_ydxi::@3/(byte[]) plot_yhi#29 line_ydxi::@5/(byte[]) plot_yhi#30 )
+  (byte[]) plot_xlo#14 ← phi( line_ydxi::@3/(byte[]) plot_xlo#30 line_ydxi::@5/(byte[]) plot_xlo#31 )
+  (byte[]) plot_xhi#14 ← phi( line_ydxi::@3/(byte[]) plot_xhi#30 line_ydxi::@5/(byte[]) plot_xhi#31 )
+  (byte) line_ydxi::yd#6 ← phi( line_ydxi::@3/(byte) line_ydxi::yd#3 line_ydxi::@5/(byte) line_ydxi::yd#2 )
+  (byte) line_ydxi::xd#5 ← phi( line_ydxi::@3/(byte) line_ydxi::xd#6 line_ydxi::@5/(byte) line_ydxi::xd#3 )
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#7 )
+  (byte) line_ydxi::y#5 ← phi( line_ydxi::@3/(byte) line_ydxi::y#7 line_ydxi::@5/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::y1#2 ← phi( line_ydxi::@3/(byte) line_ydxi::y1#3 line_ydxi::@5/(byte) line_ydxi::y1#4 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#2 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y#5 < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte[]) plot_bit#30 ← phi( line_ydxi::@5/(byte[]) plot_bit#31 )
+  (byte[]) plot_ylo#29 ← phi( line_ydxi::@5/(byte[]) plot_ylo#30 )
+  (byte[]) plot_yhi#29 ← phi( line_ydxi::@5/(byte[]) plot_yhi#30 )
+  (byte[]) plot_xlo#30 ← phi( line_ydxi::@5/(byte[]) plot_xlo#31 )
+  (byte[]) plot_xhi#30 ← phi( line_ydxi::@5/(byte[]) plot_xhi#31 )
+  (byte) line_ydxi::xd#6 ← phi( line_ydxi::@5/(byte) line_ydxi::xd#3 )
+  (byte) line_ydxi::y#7 ← phi( line_ydxi::@5/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::y1#3 ← phi( line_ydxi::@5/(byte) line_ydxi::y1#4 )
+  (byte) line_ydxi::yd#3 ← phi( line_ydxi::@5/(byte) line_ydxi::yd#2 )
+  (byte) line_ydxi::e#4 ← phi( line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#4 ← phi( line_ydxi::@5/(byte) line_ydxi::x#7 )
+  (byte~) line_ydxi::$6 ← (byte) line_ydxi::x#4 + (byte) 1
+  (byte) line_ydxi::x#2 ← (byte~) line_ydxi::$6
+  (byte~) line_ydxi::$7 ← (byte) line_ydxi::e#4 - (byte) line_ydxi::yd#3
+  (byte) line_ydxi::e#2 ← (byte~) line_ydxi::$7
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte[]) plot_bit#15 ← phi( line::@10/(byte[]) plot_bit#32 line::@6/(byte[]) plot_bit#33 )
+  (byte[]) plot_ylo#15 ← phi( line::@10/(byte[]) plot_ylo#31 line::@6/(byte[]) plot_ylo#32 )
+  (byte[]) plot_yhi#15 ← phi( line::@10/(byte[]) plot_yhi#31 line::@6/(byte[]) plot_yhi#32 )
+  (byte[]) plot_xlo#15 ← phi( line::@10/(byte[]) plot_xlo#32 line::@6/(byte[]) plot_xlo#33 )
+  (byte[]) plot_xhi#15 ← phi( line::@10/(byte[]) plot_xhi#32 line::@6/(byte[]) plot_xhi#33 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte~) line_ydxd::$0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  (byte) line_ydxd::e#0 ← (byte~) line_ydxd::$0
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::y1#5 ← phi( line_ydxd/(byte) line_ydxd::y1#6 line_ydxd::@2/(byte) line_ydxd::y1#2 )
+  (byte[]) plot_bit#5 ← phi( line_ydxd/(byte[]) plot_bit#15 line_ydxd::@2/(byte[]) plot_bit#16 )
+  (byte[]) plot_ylo#5 ← phi( line_ydxd/(byte[]) plot_ylo#15 line_ydxd::@2/(byte[]) plot_ylo#16 )
+  (byte[]) plot_yhi#5 ← phi( line_ydxd/(byte[]) plot_yhi#15 line_ydxd::@2/(byte[]) plot_yhi#16 )
+  (byte[]) plot_xlo#5 ← phi( line_ydxd/(byte[]) plot_xlo#15 line_ydxd::@2/(byte[]) plot_xlo#16 )
+  (byte[]) plot_xhi#5 ← phi( line_ydxd/(byte[]) plot_xhi#15 line_ydxd::@2/(byte[]) plot_xhi#16 )
+  (byte) line_ydxd::yd#4 ← phi( line_ydxd/(byte) line_ydxd::yd#5 line_ydxd::@2/(byte) line_ydxd::yd#6 )
+  (byte) line_ydxd::xd#4 ← phi( line_ydxd/(byte) line_ydxd::xd#2 line_ydxd::@2/(byte) line_ydxd::xd#5 )
+  (byte) line_ydxd::e#5 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#5 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte[]) plot_bit#35 ← phi( line_ydxd::@1/(byte[]) plot_bit#5 )
+  (byte[]) plot_ylo#34 ← phi( line_ydxd::@1/(byte[]) plot_ylo#5 )
+  (byte[]) plot_yhi#34 ← phi( line_ydxd::@1/(byte[]) plot_yhi#5 )
+  (byte[]) plot_xlo#35 ← phi( line_ydxd::@1/(byte[]) plot_xlo#5 )
+  (byte[]) plot_xhi#35 ← phi( line_ydxd::@1/(byte[]) plot_xhi#5 )
+  (byte) line_ydxd::x#7 ← phi( line_ydxd::@1/(byte) line_ydxd::x#3 )
+  (byte) line_ydxd::y1#4 ← phi( line_ydxd::@1/(byte) line_ydxd::y1#5 )
+  (byte) line_ydxd::yd#2 ← phi( line_ydxd::@1/(byte) line_ydxd::yd#4 )
+  (byte) line_ydxd::xd#3 ← phi( line_ydxd::@1/(byte) line_ydxd::xd#4 )
+  (byte) line_ydxd::e#3 ← phi( line_ydxd::@1/(byte) line_ydxd::e#5 )
+  (byte) line_ydxd::y#4 ← phi( line_ydxd::@1/(byte) line_ydxd::y#3 )
+  (byte~) line_ydxd::$2 ← (byte) line_ydxd::y#4 + (byte) 1
+  (byte) line_ydxd::y#2 ← (byte~) line_ydxd::$2
+  (byte~) line_ydxd::$3 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#3
+  (byte) line_ydxd::e#1 ← (byte~) line_ydxd::$3
+  (boolean~) line_ydxd::$4 ← (byte) line_ydxd::yd#2 < (byte) line_ydxd::e#1
+  (boolean~) line_ydxd::$5 ← ! (boolean~) line_ydxd::$4
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte[]) plot_bit#16 ← phi( line_ydxd::@3/(byte[]) plot_bit#34 line_ydxd::@5/(byte[]) plot_bit#35 )
+  (byte[]) plot_ylo#16 ← phi( line_ydxd::@3/(byte[]) plot_ylo#33 line_ydxd::@5/(byte[]) plot_ylo#34 )
+  (byte[]) plot_yhi#16 ← phi( line_ydxd::@3/(byte[]) plot_yhi#33 line_ydxd::@5/(byte[]) plot_yhi#34 )
+  (byte[]) plot_xlo#16 ← phi( line_ydxd::@3/(byte[]) plot_xlo#34 line_ydxd::@5/(byte[]) plot_xlo#35 )
+  (byte[]) plot_xhi#16 ← phi( line_ydxd::@3/(byte[]) plot_xhi#34 line_ydxd::@5/(byte[]) plot_xhi#35 )
+  (byte) line_ydxd::yd#6 ← phi( line_ydxd::@3/(byte) line_ydxd::yd#3 line_ydxd::@5/(byte) line_ydxd::yd#2 )
+  (byte) line_ydxd::xd#5 ← phi( line_ydxd::@3/(byte) line_ydxd::xd#6 line_ydxd::@5/(byte) line_ydxd::xd#3 )
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#7 )
+  (byte) line_ydxd::y#5 ← phi( line_ydxd::@3/(byte) line_ydxd::y#7 line_ydxd::@5/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::y1#2 ← phi( line_ydxd::@3/(byte) line_ydxd::y1#3 line_ydxd::@5/(byte) line_ydxd::y1#4 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#2 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y#5 < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte[]) plot_bit#34 ← phi( line_ydxd::@5/(byte[]) plot_bit#35 )
+  (byte[]) plot_ylo#33 ← phi( line_ydxd::@5/(byte[]) plot_ylo#34 )
+  (byte[]) plot_yhi#33 ← phi( line_ydxd::@5/(byte[]) plot_yhi#34 )
+  (byte[]) plot_xlo#34 ← phi( line_ydxd::@5/(byte[]) plot_xlo#35 )
+  (byte[]) plot_xhi#34 ← phi( line_ydxd::@5/(byte[]) plot_xhi#35 )
+  (byte) line_ydxd::xd#6 ← phi( line_ydxd::@5/(byte) line_ydxd::xd#3 )
+  (byte) line_ydxd::y#7 ← phi( line_ydxd::@5/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::y1#3 ← phi( line_ydxd::@5/(byte) line_ydxd::y1#4 )
+  (byte) line_ydxd::yd#3 ← phi( line_ydxd::@5/(byte) line_ydxd::yd#2 )
+  (byte) line_ydxd::e#4 ← phi( line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#4 ← phi( line_ydxd::@5/(byte) line_ydxd::x#7 )
+  (byte~) line_ydxd::$6 ← (byte) line_ydxd::x#4 - (byte) 1
+  (byte) line_ydxd::x#2 ← (byte~) line_ydxd::$6
+  (byte~) line_ydxd::$7 ← (byte) line_ydxd::e#4 - (byte) line_ydxd::yd#3
+  (byte) line_ydxd::e#2 ← (byte~) line_ydxd::$7
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte[]) plot_bit#1 ← phi( line_xdyd::@1/(byte[]) plot_bit#3 line_xdyi::@1/(byte[]) plot_bit#4 line_ydxd::@1/(byte[]) plot_bit#5 line_ydxi::@1/(byte[]) plot_bit#6 )
+  (byte[]) plot_ylo#1 ← phi( line_xdyd::@1/(byte[]) plot_ylo#3 line_xdyi::@1/(byte[]) plot_ylo#4 line_ydxd::@1/(byte[]) plot_ylo#5 line_ydxi::@1/(byte[]) plot_ylo#6 )
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte[]) plot_yhi#1 ← phi( line_xdyd::@1/(byte[]) plot_yhi#3 line_xdyi::@1/(byte[]) plot_yhi#4 line_ydxd::@1/(byte[]) plot_yhi#5 line_ydxi::@1/(byte[]) plot_yhi#6 )
+  (byte[]) plot_xlo#1 ← phi( line_xdyd::@1/(byte[]) plot_xlo#3 line_xdyi::@1/(byte[]) plot_xlo#4 line_ydxd::@1/(byte[]) plot_xlo#5 line_ydxi::@1/(byte[]) plot_xlo#6 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte[]) plot_xhi#1 ← phi( line_xdyd::@1/(byte[]) plot_xhi#3 line_xdyi::@1/(byte[]) plot_xhi#4 line_ydxd::@1/(byte[]) plot_xhi#5 line_ydxi::@1/(byte[]) plot_xhi#6 )
   (byte*) plot::plotter_x#0 ← (byte) 0
   (byte*) plot::plotter_y#0 ← (byte) 0
-  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#9
+  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte~) plot::$4 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte*) plot::plotter#0 ← (byte~) plot::$4
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -1804,23 +2755,23 @@ plot::@return: scope:[plot]  from plot
   return 
   to:@return
 init_plot_tables: scope:[init_plot_tables]  from main::@3
-  (byte[]) plot_yhi#28 ← phi( main::@3/(byte[]) plot_yhi#31 )
-  (byte[]) plot_ylo#28 ← phi( main::@3/(byte[]) plot_ylo#31 )
-  (byte[]) plot_bit#12 ← phi( main::@3/(byte[]) plot_bit#19 )
-  (byte[]) plot_xhi#12 ← phi( main::@3/(byte[]) plot_xhi#19 )
+  (byte[]) plot_yhi#41 ← phi( main::@3/(byte[]) plot_yhi#44 )
+  (byte[]) plot_ylo#41 ← phi( main::@3/(byte[]) plot_ylo#44 )
+  (byte[]) plot_bit#7 ← phi( main::@3/(byte[]) plot_bit#17 )
+  (byte[]) plot_xhi#7 ← phi( main::@3/(byte[]) plot_xhi#17 )
   (byte*) BITMAP#4 ← phi( main::@3/(byte*) BITMAP#8 )
-  (byte[]) plot_xlo#12 ← phi( main::@3/(byte[]) plot_xlo#19 )
+  (byte[]) plot_xlo#7 ← phi( main::@3/(byte[]) plot_xlo#17 )
   (byte) init_plot_tables::bit#0 ← (byte) 128
   (byte) init_plot_tables::x#0 ← (byte) 0
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@2
-  (byte[]) plot_yhi#25 ← phi( init_plot_tables/(byte[]) plot_yhi#28 init_plot_tables::@2/(byte[]) plot_yhi#19 )
-  (byte[]) plot_ylo#25 ← phi( init_plot_tables/(byte[]) plot_ylo#28 init_plot_tables::@2/(byte[]) plot_ylo#19 )
-  (byte[]) plot_bit#2 ← phi( init_plot_tables/(byte[]) plot_bit#12 init_plot_tables::@2/(byte[]) plot_bit#13 )
+  (byte[]) plot_yhi#35 ← phi( init_plot_tables/(byte[]) plot_yhi#41 init_plot_tables::@2/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#35 ← phi( init_plot_tables/(byte[]) plot_ylo#41 init_plot_tables::@2/(byte[]) plot_ylo#17 )
+  (byte[]) plot_bit#2 ← phi( init_plot_tables/(byte[]) plot_bit#7 init_plot_tables::@2/(byte[]) plot_bit#8 )
   (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) init_plot_tables::bit#0 init_plot_tables::@2/(byte) init_plot_tables::bit#4 )
-  (byte[]) plot_xhi#2 ← phi( init_plot_tables/(byte[]) plot_xhi#12 init_plot_tables::@2/(byte[]) plot_xhi#13 )
+  (byte[]) plot_xhi#2 ← phi( init_plot_tables/(byte[]) plot_xhi#7 init_plot_tables::@2/(byte[]) plot_xhi#8 )
   (byte*) BITMAP#1 ← phi( init_plot_tables/(byte*) BITMAP#4 init_plot_tables::@2/(byte*) BITMAP#5 )
-  (byte[]) plot_xlo#2 ← phi( init_plot_tables/(byte[]) plot_xlo#12 init_plot_tables::@2/(byte[]) plot_xlo#13 )
+  (byte[]) plot_xlo#2 ← phi( init_plot_tables/(byte[]) plot_xlo#7 init_plot_tables::@2/(byte[]) plot_xlo#8 )
   (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) init_plot_tables::x#0 init_plot_tables::@2/(byte) init_plot_tables::x#1 )
   (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248
   *((byte[]) plot_xlo#2 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0
@@ -1834,37 +2785,37 @@ init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_
   if((boolean~) init_plot_tables::$4) goto init_plot_tables::@2
   to:init_plot_tables::@5
 init_plot_tables::@2: scope:[init_plot_tables]  from init_plot_tables::@1 init_plot_tables::@5
-  (byte[]) plot_yhi#19 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#25 init_plot_tables::@5/(byte[]) plot_yhi#26 )
-  (byte[]) plot_ylo#19 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#25 init_plot_tables::@5/(byte[]) plot_ylo#26 )
-  (byte[]) plot_bit#13 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 init_plot_tables::@5/(byte[]) plot_bit#20 )
+  (byte[]) plot_yhi#17 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#35 init_plot_tables::@5/(byte[]) plot_yhi#36 )
+  (byte[]) plot_ylo#17 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#35 init_plot_tables::@5/(byte[]) plot_ylo#36 )
+  (byte[]) plot_bit#8 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 init_plot_tables::@5/(byte[]) plot_bit#18 )
   (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@1/(byte) init_plot_tables::bit#1 init_plot_tables::@5/(byte) init_plot_tables::bit#2 )
-  (byte[]) plot_xhi#13 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 init_plot_tables::@5/(byte[]) plot_xhi#20 )
+  (byte[]) plot_xhi#8 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 init_plot_tables::@5/(byte[]) plot_xhi#18 )
   (byte*) BITMAP#5 ← phi( init_plot_tables::@1/(byte*) BITMAP#1 init_plot_tables::@5/(byte*) BITMAP#9 )
-  (byte[]) plot_xlo#13 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 init_plot_tables::@5/(byte[]) plot_xlo#20 )
+  (byte[]) plot_xlo#8 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 init_plot_tables::@5/(byte[]) plot_xlo#18 )
   (byte) init_plot_tables::x#3 ← phi( init_plot_tables::@1/(byte) init_plot_tables::x#2 init_plot_tables::@5/(byte) init_plot_tables::x#4 )
   (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#3
   (boolean~) init_plot_tables::$5 ← (byte) init_plot_tables::x#1 != (byte) 0
   if((boolean~) init_plot_tables::$5) goto init_plot_tables::@1
   to:init_plot_tables::@6
 init_plot_tables::@5: scope:[init_plot_tables]  from init_plot_tables::@1
-  (byte[]) plot_yhi#26 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#25 )
-  (byte[]) plot_ylo#26 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#25 )
-  (byte[]) plot_bit#20 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 )
-  (byte[]) plot_xhi#20 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 )
+  (byte[]) plot_yhi#36 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#35 )
+  (byte[]) plot_ylo#36 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#35 )
+  (byte[]) plot_bit#18 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 )
+  (byte[]) plot_xhi#18 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 )
   (byte*) BITMAP#9 ← phi( init_plot_tables::@1/(byte*) BITMAP#1 )
-  (byte[]) plot_xlo#20 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 )
+  (byte[]) plot_xlo#18 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 )
   (byte) init_plot_tables::x#4 ← phi( init_plot_tables::@1/(byte) init_plot_tables::x#2 )
   (byte) init_plot_tables::bit#2 ← (byte) 128
   to:init_plot_tables::@2
 init_plot_tables::@6: scope:[init_plot_tables]  from init_plot_tables::@2
-  (byte[]) plot_yhi#13 ← phi( init_plot_tables::@2/(byte[]) plot_yhi#19 )
-  (byte[]) plot_ylo#13 ← phi( init_plot_tables::@2/(byte[]) plot_ylo#19 )
+  (byte[]) plot_yhi#8 ← phi( init_plot_tables::@2/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#8 ← phi( init_plot_tables::@2/(byte[]) plot_ylo#17 )
   (byte*) init_plot_tables::yoffs#0 ← (byte) 0
   (byte) init_plot_tables::y#0 ← (byte) 0
   to:init_plot_tables::@3
 init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_plot_tables::@6
-  (byte[]) plot_yhi#2 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#12 init_plot_tables::@6/(byte[]) plot_yhi#13 )
-  (byte[]) plot_ylo#2 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#12 init_plot_tables::@6/(byte[]) plot_ylo#13 )
+  (byte[]) plot_yhi#2 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#7 init_plot_tables::@6/(byte[]) plot_yhi#8 )
+  (byte[]) plot_ylo#2 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#7 init_plot_tables::@6/(byte[]) plot_ylo#8 )
   (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@6/(byte*) init_plot_tables::yoffs#0 )
   (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@6/(byte) init_plot_tables::y#0 )
   (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7
@@ -1879,8 +2830,8 @@ init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_p
   if((boolean~) init_plot_tables::$12) goto init_plot_tables::@4
   to:init_plot_tables::@7
 init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_plot_tables::@7
-  (byte[]) plot_yhi#12 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 init_plot_tables::@7/(byte[]) plot_yhi#20 )
-  (byte[]) plot_ylo#12 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 init_plot_tables::@7/(byte[]) plot_ylo#20 )
+  (byte[]) plot_yhi#7 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 init_plot_tables::@7/(byte[]) plot_yhi#18 )
+  (byte[]) plot_ylo#7 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 init_plot_tables::@7/(byte[]) plot_ylo#18 )
   (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 init_plot_tables::@7/(byte*) init_plot_tables::yoffs#1 )
   (byte) init_plot_tables::y#3 ← phi( init_plot_tables::@3/(byte) init_plot_tables::y#2 init_plot_tables::@7/(byte) init_plot_tables::y#4 )
   (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#3
@@ -1888,8 +2839,8 @@ init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_p
   if((boolean~) init_plot_tables::$14) goto init_plot_tables::@3
   to:init_plot_tables::@return
 init_plot_tables::@7: scope:[init_plot_tables]  from init_plot_tables::@3
-  (byte[]) plot_yhi#20 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 )
-  (byte[]) plot_ylo#20 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 )
+  (byte[]) plot_yhi#18 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 )
+  (byte[]) plot_ylo#18 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 )
   (byte) init_plot_tables::y#4 ← phi( init_plot_tables::@3/(byte) init_plot_tables::y#2 )
   (byte*) init_plot_tables::yoffs#3 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 )
   (byte*~) init_plot_tables::$13 ← (byte*) init_plot_tables::yoffs#3 + (word) 320
@@ -1929,16 +2880,16 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
-  (byte[]) plot_yhi#34 ← phi( @begin/(byte[]) plot_yhi#0 )
-  (byte[]) plot_ylo#34 ← phi( @begin/(byte[]) plot_ylo#0 )
+@10: scope:[]  from @begin
+  (byte[]) plot_yhi#47 ← phi( @begin/(byte[]) plot_yhi#0 )
+  (byte[]) plot_ylo#47 ← phi( @begin/(byte[]) plot_ylo#0 )
   (byte) lines_cnt#9 ← phi( @begin/(byte) lines_cnt#0 )
   (byte[]) lines_y#9 ← phi( @begin/(byte[]) lines_y#0 )
   (byte[]) lines_x#9 ← phi( @begin/(byte[]) lines_x#0 )
   (byte*) SCREEN#6 ← phi( @begin/(byte*) SCREEN#0 )
-  (byte[]) plot_bit#26 ← phi( @begin/(byte[]) plot_bit#0 )
-  (byte[]) plot_xhi#26 ← phi( @begin/(byte[]) plot_xhi#0 )
-  (byte[]) plot_xlo#26 ← phi( @begin/(byte[]) plot_xlo#0 )
+  (byte[]) plot_bit#36 ← phi( @begin/(byte[]) plot_bit#0 )
+  (byte[]) plot_xhi#36 ← phi( @begin/(byte[]) plot_xhi#0 )
+  (byte[]) plot_xlo#36 ← phi( @begin/(byte[]) plot_xlo#0 )
   (byte*) BITMAP#7 ← phi( @begin/(byte*) BITMAP#0 )
   (byte*) D018#2 ← phi( @begin/(byte*) D018#0 )
   (byte*) D011#2 ← phi( @begin/(byte*) D011#0 )
@@ -1948,10 +2899,10 @@ init_screen::@return: scope:[init_screen]  from init_screen::@2
   (byte*) FGCOL#2 ← phi( @begin/(byte*) FGCOL#0 )
   (byte*) BGCOL#2 ← phi( @begin/(byte*) BGCOL#0 )
   call main param-assignment
-  to:@8
-@8: scope:[]  from @7
+  to:@11
+@11: scope:[]  from @10
   to:@end
-@end: scope:[]  from @8
+@end: scope:[]  from @11
 
 CONTROL FLOW GRAPH WITH ASSIGNMENT CALL & RETURN
 @begin: scope:[]  from
@@ -1979,25 +2930,25 @@ CONTROL FLOW GRAPH WITH ASSIGNMENT CALL & RETURN
   (byte[]) lines_x#0 ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y#0 ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt#0 ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
-  (byte[]) plot_yhi#32 ← phi( @7/(byte[]) plot_yhi#34 )
-  (byte[]) plot_ylo#32 ← phi( @7/(byte[]) plot_ylo#34 )
-  (byte) lines_cnt#8 ← phi( @7/(byte) lines_cnt#9 )
-  (byte[]) lines_y#8 ← phi( @7/(byte[]) lines_y#9 )
-  (byte[]) lines_x#8 ← phi( @7/(byte[]) lines_x#9 )
-  (byte*) SCREEN#5 ← phi( @7/(byte*) SCREEN#6 )
-  (byte[]) plot_bit#21 ← phi( @7/(byte[]) plot_bit#26 )
-  (byte[]) plot_xhi#21 ← phi( @7/(byte[]) plot_xhi#26 )
-  (byte[]) plot_xlo#21 ← phi( @7/(byte[]) plot_xlo#26 )
-  (byte*) BITMAP#6 ← phi( @7/(byte*) BITMAP#7 )
-  (byte*) D018#1 ← phi( @7/(byte*) D018#2 )
-  (byte*) D011#1 ← phi( @7/(byte*) D011#2 )
-  (byte) RSEL#1 ← phi( @7/(byte) RSEL#2 )
-  (byte) DEN#1 ← phi( @7/(byte) DEN#2 )
-  (byte) BMM#1 ← phi( @7/(byte) BMM#2 )
-  (byte*) FGCOL#1 ← phi( @7/(byte*) FGCOL#2 )
-  (byte*) BGCOL#1 ← phi( @7/(byte*) BGCOL#2 )
+  to:@10
+main: scope:[main]  from @10
+  (byte[]) plot_yhi#45 ← phi( @10/(byte[]) plot_yhi#47 )
+  (byte[]) plot_ylo#45 ← phi( @10/(byte[]) plot_ylo#47 )
+  (byte) lines_cnt#8 ← phi( @10/(byte) lines_cnt#9 )
+  (byte[]) lines_y#8 ← phi( @10/(byte[]) lines_y#9 )
+  (byte[]) lines_x#8 ← phi( @10/(byte[]) lines_x#9 )
+  (byte*) SCREEN#5 ← phi( @10/(byte*) SCREEN#6 )
+  (byte[]) plot_bit#19 ← phi( @10/(byte[]) plot_bit#36 )
+  (byte[]) plot_xhi#19 ← phi( @10/(byte[]) plot_xhi#36 )
+  (byte[]) plot_xlo#19 ← phi( @10/(byte[]) plot_xlo#36 )
+  (byte*) BITMAP#6 ← phi( @10/(byte*) BITMAP#7 )
+  (byte*) D018#1 ← phi( @10/(byte*) D018#2 )
+  (byte*) D011#1 ← phi( @10/(byte*) D011#2 )
+  (byte) RSEL#1 ← phi( @10/(byte) RSEL#2 )
+  (byte) DEN#1 ← phi( @10/(byte) DEN#2 )
+  (byte) BMM#1 ← phi( @10/(byte) BMM#2 )
+  (byte*) FGCOL#1 ← phi( @10/(byte*) FGCOL#2 )
+  (byte*) BGCOL#1 ← phi( @10/(byte*) BGCOL#2 )
   *((byte*) BGCOL#1) ← (byte) 0
   *((byte*) FGCOL#1) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM#1 | (byte) DEN#1
@@ -2008,44 +2959,44 @@ main: scope:[main]  from @7
   call init_screen param-assignment
   to:main::@3
 main::@3: scope:[main]  from main
-  (byte[]) plot_yhi#31 ← phi( main/(byte[]) plot_yhi#32 )
-  (byte[]) plot_ylo#31 ← phi( main/(byte[]) plot_ylo#32 )
+  (byte[]) plot_yhi#44 ← phi( main/(byte[]) plot_yhi#45 )
+  (byte[]) plot_ylo#44 ← phi( main/(byte[]) plot_ylo#45 )
   (byte) lines_cnt#7 ← phi( main/(byte) lines_cnt#8 )
   (byte[]) lines_y#7 ← phi( main/(byte[]) lines_y#8 )
   (byte[]) lines_x#7 ← phi( main/(byte[]) lines_x#8 )
-  (byte[]) plot_bit#19 ← phi( main/(byte[]) plot_bit#21 )
-  (byte[]) plot_xhi#19 ← phi( main/(byte[]) plot_xhi#21 )
+  (byte[]) plot_bit#17 ← phi( main/(byte[]) plot_bit#19 )
+  (byte[]) plot_xhi#17 ← phi( main/(byte[]) plot_xhi#19 )
   (byte*) BITMAP#8 ← phi( main/(byte*) BITMAP#6 )
-  (byte[]) plot_xlo#19 ← phi( main/(byte[]) plot_xlo#21 )
+  (byte[]) plot_xlo#17 ← phi( main/(byte[]) plot_xlo#19 )
   call init_plot_tables param-assignment
   to:main::@4
 main::@4: scope:[main]  from main::@3
-  (byte[]) plot_bit#31 ← phi( main::@3/(byte[]) plot_bit#19 )
-  (byte[]) plot_ylo#35 ← phi( main::@3/(byte[]) plot_ylo#31 )
-  (byte[]) plot_yhi#35 ← phi( main::@3/(byte[]) plot_yhi#31 )
-  (byte[]) plot_xlo#31 ← phi( main::@3/(byte[]) plot_xlo#19 )
-  (byte[]) plot_xhi#31 ← phi( main::@3/(byte[]) plot_xhi#19 )
+  (byte[]) plot_bit#48 ← phi( main::@3/(byte[]) plot_bit#17 )
+  (byte[]) plot_ylo#52 ← phi( main::@3/(byte[]) plot_ylo#44 )
+  (byte[]) plot_yhi#52 ← phi( main::@3/(byte[]) plot_yhi#44 )
+  (byte[]) plot_xlo#48 ← phi( main::@3/(byte[]) plot_xlo#17 )
+  (byte[]) plot_xhi#48 ← phi( main::@3/(byte[]) plot_xhi#17 )
   (byte) lines_cnt#5 ← phi( main::@3/(byte) lines_cnt#7 )
   (byte[]) lines_y#5 ← phi( main::@3/(byte[]) lines_y#7 )
   (byte[]) lines_x#5 ← phi( main::@3/(byte[]) lines_x#7 )
   to:main::@1
 main::@1: scope:[main]  from main::@4 main::@5
-  (byte[]) plot_bit#30 ← phi( main::@4/(byte[]) plot_bit#31 main::@5/(byte[]) plot_bit#32 )
-  (byte[]) plot_ylo#33 ← phi( main::@4/(byte[]) plot_ylo#35 main::@5/(byte[]) plot_ylo#36 )
-  (byte[]) plot_yhi#33 ← phi( main::@4/(byte[]) plot_yhi#35 main::@5/(byte[]) plot_yhi#36 )
-  (byte[]) plot_xlo#30 ← phi( main::@4/(byte[]) plot_xlo#31 main::@5/(byte[]) plot_xlo#32 )
-  (byte[]) plot_xhi#30 ← phi( main::@4/(byte[]) plot_xhi#31 main::@5/(byte[]) plot_xhi#32 )
+  (byte[]) plot_bit#47 ← phi( main::@4/(byte[]) plot_bit#48 main::@5/(byte[]) plot_bit#49 )
+  (byte[]) plot_ylo#51 ← phi( main::@4/(byte[]) plot_ylo#52 main::@5/(byte[]) plot_ylo#53 )
+  (byte[]) plot_yhi#51 ← phi( main::@4/(byte[]) plot_yhi#52 main::@5/(byte[]) plot_yhi#53 )
+  (byte[]) plot_xlo#47 ← phi( main::@4/(byte[]) plot_xlo#48 main::@5/(byte[]) plot_xlo#49 )
+  (byte[]) plot_xhi#47 ← phi( main::@4/(byte[]) plot_xhi#48 main::@5/(byte[]) plot_xhi#49 )
   (byte) lines_cnt#4 ← phi( main::@4/(byte) lines_cnt#5 main::@5/(byte) lines_cnt#6 )
   (byte[]) lines_y#4 ← phi( main::@4/(byte[]) lines_y#5 main::@5/(byte[]) lines_y#6 )
   (byte[]) lines_x#4 ← phi( main::@4/(byte[]) lines_x#5 main::@5/(byte[]) lines_x#6 )
   call lines param-assignment
   to:main::@5
 main::@5: scope:[main]  from main::@1
-  (byte[]) plot_bit#32 ← phi( main::@1/(byte[]) plot_bit#30 )
-  (byte[]) plot_ylo#36 ← phi( main::@1/(byte[]) plot_ylo#33 )
-  (byte[]) plot_yhi#36 ← phi( main::@1/(byte[]) plot_yhi#33 )
-  (byte[]) plot_xlo#32 ← phi( main::@1/(byte[]) plot_xlo#30 )
-  (byte[]) plot_xhi#32 ← phi( main::@1/(byte[]) plot_xhi#30 )
+  (byte[]) plot_bit#49 ← phi( main::@1/(byte[]) plot_bit#47 )
+  (byte[]) plot_ylo#53 ← phi( main::@1/(byte[]) plot_ylo#51 )
+  (byte[]) plot_yhi#53 ← phi( main::@1/(byte[]) plot_yhi#51 )
+  (byte[]) plot_xlo#49 ← phi( main::@1/(byte[]) plot_xlo#47 )
+  (byte[]) plot_xhi#49 ← phi( main::@1/(byte[]) plot_xhi#47 )
   (byte) lines_cnt#6 ← phi( main::@1/(byte) lines_cnt#4 )
   (byte[]) lines_y#6 ← phi( main::@1/(byte[]) lines_y#4 )
   (byte[]) lines_x#6 ← phi( main::@1/(byte[]) lines_x#4 )
@@ -2055,22 +3006,22 @@ main::@return: scope:[main]  from main::@5
   return 
   to:@return
 lines: scope:[lines]  from main::@1
-  (byte[]) plot_bit#28 ← phi( main::@1/(byte[]) plot_bit#30 )
-  (byte[]) plot_ylo#29 ← phi( main::@1/(byte[]) plot_ylo#33 )
-  (byte[]) plot_yhi#29 ← phi( main::@1/(byte[]) plot_yhi#33 )
-  (byte[]) plot_xlo#28 ← phi( main::@1/(byte[]) plot_xlo#30 )
-  (byte[]) plot_xhi#28 ← phi( main::@1/(byte[]) plot_xhi#30 )
+  (byte[]) plot_bit#45 ← phi( main::@1/(byte[]) plot_bit#47 )
+  (byte[]) plot_ylo#49 ← phi( main::@1/(byte[]) plot_ylo#51 )
+  (byte[]) plot_yhi#49 ← phi( main::@1/(byte[]) plot_yhi#51 )
+  (byte[]) plot_xlo#45 ← phi( main::@1/(byte[]) plot_xlo#47 )
+  (byte[]) plot_xhi#45 ← phi( main::@1/(byte[]) plot_xhi#47 )
   (byte) lines_cnt#3 ← phi( main::@1/(byte) lines_cnt#4 )
   (byte[]) lines_y#2 ← phi( main::@1/(byte[]) lines_y#4 )
   (byte[]) lines_x#2 ← phi( main::@1/(byte[]) lines_x#4 )
   (byte) lines::l#0 ← (byte) 0
   to:lines::@1
 lines::@1: scope:[lines]  from lines lines::@3
-  (byte[]) plot_bit#27 ← phi( lines/(byte[]) plot_bit#28 lines::@3/(byte[]) plot_bit#29 )
-  (byte[]) plot_ylo#27 ← phi( lines/(byte[]) plot_ylo#29 lines::@3/(byte[]) plot_ylo#30 )
-  (byte[]) plot_yhi#27 ← phi( lines/(byte[]) plot_yhi#29 lines::@3/(byte[]) plot_yhi#30 )
-  (byte[]) plot_xlo#27 ← phi( lines/(byte[]) plot_xlo#28 lines::@3/(byte[]) plot_xlo#29 )
-  (byte[]) plot_xhi#27 ← phi( lines/(byte[]) plot_xhi#28 lines::@3/(byte[]) plot_xhi#29 )
+  (byte[]) plot_bit#44 ← phi( lines/(byte[]) plot_bit#45 lines::@3/(byte[]) plot_bit#46 )
+  (byte[]) plot_ylo#48 ← phi( lines/(byte[]) plot_ylo#49 lines::@3/(byte[]) plot_ylo#50 )
+  (byte[]) plot_yhi#48 ← phi( lines/(byte[]) plot_yhi#49 lines::@3/(byte[]) plot_yhi#50 )
+  (byte[]) plot_xlo#44 ← phi( lines/(byte[]) plot_xlo#45 lines::@3/(byte[]) plot_xlo#46 )
+  (byte[]) plot_xhi#44 ← phi( lines/(byte[]) plot_xhi#45 lines::@3/(byte[]) plot_xhi#46 )
   (byte) lines_cnt#2 ← phi( lines/(byte) lines_cnt#3 lines::@3/(byte) lines_cnt#1 )
   (byte[]) lines_y#1 ← phi( lines/(byte[]) lines_y#2 lines::@3/(byte[]) lines_y#3 )
   (byte) lines::l#2 ← phi( lines/(byte) lines::l#0 lines::@3/(byte) lines::l#1 )
@@ -2088,11 +3039,11 @@ lines::@1: scope:[lines]  from lines lines::@3
   call line param-assignment
   to:lines::@3
 lines::@3: scope:[lines]  from lines::@1
-  (byte[]) plot_bit#29 ← phi( lines::@1/(byte[]) plot_bit#27 )
-  (byte[]) plot_ylo#30 ← phi( lines::@1/(byte[]) plot_ylo#27 )
-  (byte[]) plot_yhi#30 ← phi( lines::@1/(byte[]) plot_yhi#27 )
-  (byte[]) plot_xlo#29 ← phi( lines::@1/(byte[]) plot_xlo#27 )
-  (byte[]) plot_xhi#29 ← phi( lines::@1/(byte[]) plot_xhi#27 )
+  (byte[]) plot_bit#46 ← phi( lines::@1/(byte[]) plot_bit#44 )
+  (byte[]) plot_ylo#50 ← phi( lines::@1/(byte[]) plot_ylo#48 )
+  (byte[]) plot_yhi#50 ← phi( lines::@1/(byte[]) plot_yhi#48 )
+  (byte[]) plot_xlo#46 ← phi( lines::@1/(byte[]) plot_xlo#44 )
+  (byte[]) plot_xhi#46 ← phi( lines::@1/(byte[]) plot_xhi#44 )
   (byte[]) lines_y#3 ← phi( lines::@1/(byte[]) lines_y#1 )
   (byte[]) lines_x#3 ← phi( lines::@1/(byte[]) lines_x#1 )
   (byte) lines_cnt#1 ← phi( lines::@1/(byte) lines_cnt#2 )
@@ -2105,43 +3056,43 @@ lines::@return: scope:[lines]  from lines::@3
   return 
   to:@return
 line: scope:[line]  from lines::@1
-  (byte[]) plot_bit#22 ← phi( lines::@1/(byte[]) plot_bit#27 )
-  (byte[]) plot_ylo#21 ← phi( lines::@1/(byte[]) plot_ylo#27 )
-  (byte[]) plot_yhi#21 ← phi( lines::@1/(byte[]) plot_yhi#27 )
-  (byte[]) plot_xlo#22 ← phi( lines::@1/(byte[]) plot_xlo#27 )
-  (byte[]) plot_xhi#22 ← phi( lines::@1/(byte[]) plot_xhi#27 )
-  (byte) line::y1#8 ← phi( lines::@1/(byte) line::y1#0 )
-  (byte) line::y0#9 ← phi( lines::@1/(byte) line::y0#0 )
+  (byte[]) plot_bit#43 ← phi( lines::@1/(byte[]) plot_bit#44 )
+  (byte[]) plot_ylo#46 ← phi( lines::@1/(byte[]) plot_ylo#48 )
+  (byte[]) plot_yhi#46 ← phi( lines::@1/(byte[]) plot_yhi#48 )
+  (byte[]) plot_xlo#43 ← phi( lines::@1/(byte[]) plot_xlo#44 )
+  (byte[]) plot_xhi#43 ← phi( lines::@1/(byte[]) plot_xhi#44 )
+  (byte) line::y1#13 ← phi( lines::@1/(byte) line::y1#0 )
+  (byte) line::y0#13 ← phi( lines::@1/(byte) line::y0#0 )
   (byte) line::x1#1 ← phi( lines::@1/(byte) line::x1#0 )
   (byte) line::x0#1 ← phi( lines::@1/(byte) line::x0#0 )
   (boolean~) line::$0 ← (byte) line::x0#1 < (byte) line::x1#1
   (boolean~) line::$1 ← ! (boolean~) line::$0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte[]) plot_bit#16 ← phi( line/(byte[]) plot_bit#22 )
-  (byte[]) plot_ylo#16 ← phi( line/(byte[]) plot_ylo#21 )
-  (byte[]) plot_yhi#16 ← phi( line/(byte[]) plot_yhi#21 )
-  (byte[]) plot_xlo#16 ← phi( line/(byte[]) plot_xlo#22 )
-  (byte[]) plot_xhi#16 ← phi( line/(byte[]) plot_xhi#22 )
-  (byte) line::y1#1 ← phi( line/(byte) line::y1#8 )
-  (byte) line::y0#1 ← phi( line/(byte) line::y0#9 )
-  (byte) line::x0#2 ← phi( line/(byte) line::x0#1 )
-  (byte) line::x1#2 ← phi( line/(byte) line::x1#1 )
-  (byte~) line::$13 ← (byte) line::x1#2 - (byte) line::x0#2
-  (byte) line::xd#0 ← (byte~) line::$13
-  (boolean~) line::$14 ← (byte) line::y0#1 < (byte) line::y1#1
-  (boolean~) line::$15 ← ! (boolean~) line::$14
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
-  (byte[]) plot_bit#14 ← phi( line/(byte[]) plot_bit#22 )
-  (byte[]) plot_ylo#14 ← phi( line/(byte[]) plot_ylo#21 )
-  (byte[]) plot_yhi#14 ← phi( line/(byte[]) plot_yhi#21 )
-  (byte[]) plot_xlo#14 ← phi( line/(byte[]) plot_xlo#22 )
-  (byte[]) plot_xhi#14 ← phi( line/(byte[]) plot_xhi#22 )
-  (byte) line::y1#2 ← phi( line/(byte) line::y1#8 )
-  (byte) line::y0#2 ← phi( line/(byte) line::y0#9 )
+line::@1: scope:[line]  from line
+  (byte[]) plot_bit#42 ← phi( line/(byte[]) plot_bit#43 )
+  (byte[]) plot_ylo#43 ← phi( line/(byte[]) plot_ylo#46 )
+  (byte[]) plot_yhi#43 ← phi( line/(byte[]) plot_yhi#46 )
+  (byte[]) plot_xlo#42 ← phi( line/(byte[]) plot_xlo#43 )
+  (byte[]) plot_xhi#42 ← phi( line/(byte[]) plot_xhi#43 )
+  (byte) line::y1#1 ← phi( line/(byte) line::y1#13 )
+  (byte) line::y0#1 ← phi( line/(byte) line::y0#13 )
+  (byte) line::x1#2 ← phi( line/(byte) line::x1#1 )
+  (byte) line::x0#2 ← phi( line/(byte) line::x0#1 )
+  (byte~) line::$15 ← (byte) line::x0#2 - (byte) line::x1#2
+  (byte) line::xd#0 ← (byte~) line::$15
+  (boolean~) line::$16 ← (byte) line::y0#1 < (byte) line::y1#1
+  (boolean~) line::$17 ← ! (boolean~) line::$16
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
+  (byte[]) plot_bit#41 ← phi( line/(byte[]) plot_bit#43 )
+  (byte[]) plot_ylo#42 ← phi( line/(byte[]) plot_ylo#46 )
+  (byte[]) plot_yhi#42 ← phi( line/(byte[]) plot_yhi#46 )
+  (byte[]) plot_xlo#41 ← phi( line/(byte[]) plot_xlo#43 )
+  (byte[]) plot_xhi#41 ← phi( line/(byte[]) plot_xhi#43 )
+  (byte) line::y1#2 ← phi( line/(byte) line::y1#13 )
+  (byte) line::y0#2 ← phi( line/(byte) line::y0#13 )
   (byte) line::x0#3 ← phi( line/(byte) line::x0#1 )
   (byte) line::x1#3 ← phi( line/(byte) line::x1#1 )
   (byte~) line::$2 ← (byte) line::x1#3 - (byte) line::x0#3
@@ -2149,267 +3100,604 @@ line::@9: scope:[line]  from line
   (boolean~) line::$3 ← (byte) line::y0#2 < (byte) line::y1#2
   (boolean~) line::$4 ← ! (boolean~) line::$3
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte[]) plot_bit#6 ← phi( line::@9/(byte[]) plot_bit#14 )
-  (byte[]) plot_ylo#6 ← phi( line::@9/(byte[]) plot_ylo#14 )
-  (byte[]) plot_yhi#6 ← phi( line::@9/(byte[]) plot_yhi#14 )
-  (byte[]) plot_xlo#6 ← phi( line::@9/(byte[]) plot_xlo#14 )
-  (byte[]) plot_xhi#6 ← phi( line::@9/(byte[]) plot_xhi#14 )
-  (byte) line::y1#9 ← phi( line::@9/(byte) line::y1#2 )
-  (byte) line::x1#9 ← phi( line::@9/(byte) line::x1#3 )
-  (byte) line::y0#3 ← phi( line::@9/(byte) line::y0#2 )
-  (byte) line::x0#4 ← phi( line::@9/(byte) line::x0#3 )
-  (byte) plot::x#0 ← (byte) line::x0#4
-  (byte) plot::y#0 ← (byte) line::y0#3
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte[]) plot_bit#4 ← phi( line::@2/(byte[]) plot_bit#6 )
-  (byte[]) plot_ylo#4 ← phi( line::@2/(byte[]) plot_ylo#6 )
-  (byte[]) plot_yhi#4 ← phi( line::@2/(byte[]) plot_yhi#6 )
-  (byte[]) plot_xlo#4 ← phi( line::@2/(byte[]) plot_xlo#6 )
-  (byte[]) plot_xhi#4 ← phi( line::@2/(byte[]) plot_xhi#6 )
-  (byte) line::y1#3 ← phi( line::@2/(byte) line::y1#9 )
-  (byte) line::x1#4 ← phi( line::@2/(byte) line::x1#9 )
-  (byte) plot::x#1 ← (byte) line::x1#4
-  (byte) plot::y#1 ← (byte) line::y1#3
-  call plot param-assignment
-  to:line::@18
-line::@18: scope:[line]  from line::@17
-  to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte[]) plot_bit#15 ← phi( line::@9/(byte[]) plot_bit#14 )
-  (byte[]) plot_ylo#15 ← phi( line::@9/(byte[]) plot_ylo#14 )
-  (byte[]) plot_yhi#15 ← phi( line::@9/(byte[]) plot_yhi#14 )
-  (byte[]) plot_xlo#15 ← phi( line::@9/(byte[]) plot_xlo#14 )
-  (byte[]) plot_xhi#15 ← phi( line::@9/(byte[]) plot_xhi#14 )
-  (byte) line::x1#11 ← phi( line::@9/(byte) line::x1#3 )
-  (byte) line::x0#9 ← phi( line::@9/(byte) line::x0#3 )
-  (byte) line::xd#2 ← phi( line::@9/(byte) line::xd#1 )
-  (byte) line::y0#4 ← phi( line::@9/(byte) line::y0#2 )
-  (byte) line::y1#4 ← phi( line::@9/(byte) line::y1#2 )
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte[]) plot_bit#38 ← phi( line::@15/(byte[]) plot_bit#41 )
+  (byte[]) plot_ylo#38 ← phi( line::@15/(byte[]) plot_ylo#42 )
+  (byte[]) plot_yhi#38 ← phi( line::@15/(byte[]) plot_yhi#42 )
+  (byte[]) plot_xlo#38 ← phi( line::@15/(byte[]) plot_xlo#41 )
+  (byte[]) plot_xhi#38 ← phi( line::@15/(byte[]) plot_xhi#41 )
+  (byte) line::x0#11 ← phi( line::@15/(byte) line::x0#3 )
+  (byte) line::x1#11 ← phi( line::@15/(byte) line::x1#3 )
+  (byte) line::xd#2 ← phi( line::@15/(byte) line::xd#1 )
+  (byte) line::y1#3 ← phi( line::@15/(byte) line::y1#2 )
+  (byte) line::y0#3 ← phi( line::@15/(byte) line::y0#2 )
+  (byte~) line::$10 ← (byte) line::y0#3 - (byte) line::y1#3
+  (byte) line::yd#0 ← (byte~) line::$10
+  (boolean~) line::$11 ← (byte) line::yd#0 < (byte) line::xd#2
+  (boolean~) line::$12 ← ! (boolean~) line::$11
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte[]) plot_bit#37 ← phi( line::@15/(byte[]) plot_bit#41 )
+  (byte[]) plot_ylo#37 ← phi( line::@15/(byte[]) plot_ylo#42 )
+  (byte[]) plot_yhi#37 ← phi( line::@15/(byte[]) plot_yhi#42 )
+  (byte[]) plot_xlo#37 ← phi( line::@15/(byte[]) plot_xlo#41 )
+  (byte[]) plot_xhi#37 ← phi( line::@15/(byte[]) plot_xhi#41 )
+  (byte) line::x1#10 ← phi( line::@15/(byte) line::x1#3 )
+  (byte) line::x0#10 ← phi( line::@15/(byte) line::x0#3 )
+  (byte) line::xd#3 ← phi( line::@15/(byte) line::xd#1 )
+  (byte) line::y0#4 ← phi( line::@15/(byte) line::y0#2 )
+  (byte) line::y1#4 ← phi( line::@15/(byte) line::y1#2 )
   (byte~) line::$5 ← (byte) line::y1#4 - (byte) line::y0#4
-  (byte) line::yd#0 ← (byte~) line::$5
-  (boolean~) line::$6 ← (byte) line::yd#0 < (byte) line::xd#2
+  (byte) line::yd#1 ← (byte~) line::$5
+  (boolean~) line::$6 ← (byte) line::yd#1 < (byte) line::xd#3
   (boolean~) line::$7 ← ! (boolean~) line::$6
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte[]) plot_bit#9 ← phi( line::@10/(byte[]) plot_bit#15 )
-  (byte[]) plot_ylo#9 ← phi( line::@10/(byte[]) plot_ylo#15 )
-  (byte[]) plot_yhi#9 ← phi( line::@10/(byte[]) plot_yhi#15 )
-  (byte[]) plot_xlo#9 ← phi( line::@10/(byte[]) plot_xlo#15 )
-  (byte[]) plot_xhi#9 ← phi( line::@10/(byte[]) plot_xhi#15 )
-  (byte) line::y1#10 ← phi( line::@10/(byte) line::y1#4 )
-  (byte) line::x1#10 ← phi( line::@10/(byte) line::x1#11 )
-  (byte) line::y0#5 ← phi( line::@10/(byte) line::y0#4 )
-  (byte) line::x0#5 ← phi( line::@10/(byte) line::x0#9 )
-  (byte) plot::x#2 ← (byte) line::x0#5
-  (byte) plot::y#2 ← (byte) line::y0#5
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte[]) plot_bit#5 ← phi( line::@3/(byte[]) plot_bit#9 )
-  (byte[]) plot_ylo#5 ← phi( line::@3/(byte[]) plot_ylo#9 )
-  (byte[]) plot_yhi#5 ← phi( line::@3/(byte[]) plot_yhi#9 )
-  (byte[]) plot_xlo#5 ← phi( line::@3/(byte[]) plot_xlo#9 )
-  (byte[]) plot_xhi#5 ← phi( line::@3/(byte[]) plot_xhi#9 )
-  (byte) line::y1#5 ← phi( line::@3/(byte) line::y1#10 )
-  (byte) line::x1#5 ← phi( line::@3/(byte) line::x1#10 )
-  (byte) plot::x#3 ← (byte) line::x1#5
-  (byte) plot::y#3 ← (byte) line::y1#5
-  call plot param-assignment
-  to:line::@20
-line::@20: scope:[line]  from line::@19
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (byte[]) plot_bit#29 ← phi( line::@16/(byte[]) plot_bit#37 )
+  (byte[]) plot_ylo#28 ← phi( line::@16/(byte[]) plot_ylo#37 )
+  (byte[]) plot_yhi#28 ← phi( line::@16/(byte[]) plot_yhi#37 )
+  (byte[]) plot_xlo#29 ← phi( line::@16/(byte[]) plot_xlo#37 )
+  (byte[]) plot_xhi#29 ← phi( line::@16/(byte[]) plot_xhi#37 )
+  (byte) line::xd#4 ← phi( line::@16/(byte) line::xd#3 )
+  (byte) line::yd#4 ← phi( line::@16/(byte) line::yd#1 )
+  (byte) line::y1#5 ← phi( line::@16/(byte) line::y1#4 )
+  (byte) line::x0#4 ← phi( line::@16/(byte) line::x0#10 )
+  (byte) line::y0#5 ← phi( line::@16/(byte) line::y0#4 )
+  (byte) line_ydxi::y#0 ← (byte) line::y0#5
+  (byte) line_ydxi::x#0 ← (byte) line::x0#4
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#5
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#4
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#4
+  call line_ydxi param-assignment
+  to:line::@29
+line::@29: scope:[line]  from line::@3
   to:line::@return
-line::@11: scope:[line]  from line::@10
-  (byte[]) plot_bit#23 ← phi( line::@10/(byte[]) plot_bit#15 )
-  (byte[]) plot_ylo#22 ← phi( line::@10/(byte[]) plot_ylo#15 )
-  (byte[]) plot_yhi#22 ← phi( line::@10/(byte[]) plot_yhi#15 )
-  (byte[]) plot_xlo#23 ← phi( line::@10/(byte[]) plot_xlo#15 )
-  (byte[]) plot_xhi#23 ← phi( line::@10/(byte[]) plot_xhi#15 )
-  (byte) line::yd#1 ← phi( line::@10/(byte) line::yd#0 )
-  (byte) line::xd#3 ← phi( line::@10/(byte) line::xd#2 )
-  (byte) line::x1#6 ← phi( line::@10/(byte) line::x1#11 )
-  (byte) line::y0#6 ← phi( line::@10/(byte) line::y0#4 )
-  (byte) line::x0#6 ← phi( line::@10/(byte) line::x0#9 )
-  (byte) line_xdyi::x#0 ← (byte) line::x0#6
+line::@17: scope:[line]  from line::@16
+  (byte[]) plot_bit#20 ← phi( line::@16/(byte[]) plot_bit#37 )
+  (byte[]) plot_ylo#19 ← phi( line::@16/(byte[]) plot_ylo#37 )
+  (byte[]) plot_yhi#19 ← phi( line::@16/(byte[]) plot_yhi#37 )
+  (byte[]) plot_xlo#20 ← phi( line::@16/(byte[]) plot_xlo#37 )
+  (byte[]) plot_xhi#20 ← phi( line::@16/(byte[]) plot_xhi#37 )
+  (byte) line::yd#5 ← phi( line::@16/(byte) line::yd#1 )
+  (byte) line::xd#5 ← phi( line::@16/(byte) line::xd#3 )
+  (byte) line::x1#4 ← phi( line::@16/(byte) line::x1#10 )
+  (byte) line::y0#6 ← phi( line::@16/(byte) line::y0#4 )
+  (byte) line::x0#5 ← phi( line::@16/(byte) line::x0#10 )
+  (byte) line_xdyi::x#0 ← (byte) line::x0#5
   (byte) line_xdyi::y#0 ← (byte) line::y0#6
-  (byte) line_xdyi::x1#0 ← (byte) line::x1#6
-  (byte) line_xdyi::xd#0 ← (byte) line::xd#3
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
+  (byte) line_xdyi::x1#0 ← (byte) line::x1#4
+  (byte) line_xdyi::xd#0 ← (byte) line::xd#5
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#5
   call line_xdyi param-assignment
-  to:line::@21
-line::@21: scope:[line]  from line::@11
+  to:line::@30
+line::@30: scope:[line]  from line::@17
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte[]) plot_bit#10 ← phi( line::@1/(byte[]) plot_bit#16 )
-  (byte[]) plot_ylo#10 ← phi( line::@1/(byte[]) plot_ylo#16 )
-  (byte[]) plot_yhi#10 ← phi( line::@1/(byte[]) plot_yhi#16 )
-  (byte[]) plot_xlo#10 ← phi( line::@1/(byte[]) plot_xlo#16 )
-  (byte[]) plot_xhi#10 ← phi( line::@1/(byte[]) plot_xhi#16 )
-  (byte) line::y1#11 ← phi( line::@1/(byte) line::y1#1 )
-  (byte) line::x1#12 ← phi( line::@1/(byte) line::x1#2 )
-  (byte) line::y0#7 ← phi( line::@1/(byte) line::y0#1 )
-  (byte) line::x0#7 ← phi( line::@1/(byte) line::x0#2 )
-  (byte) plot::x#4 ← (byte) line::x0#7
-  (byte) plot::y#4 ← (byte) line::y0#7
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte[]) plot_bit#7 ← phi( line::@7/(byte[]) plot_bit#10 )
-  (byte[]) plot_ylo#7 ← phi( line::@7/(byte[]) plot_ylo#10 )
-  (byte[]) plot_yhi#7 ← phi( line::@7/(byte[]) plot_yhi#10 )
-  (byte[]) plot_xlo#7 ← phi( line::@7/(byte[]) plot_xlo#10 )
-  (byte[]) plot_xhi#7 ← phi( line::@7/(byte[]) plot_xhi#10 )
-  (byte) line::y1#6 ← phi( line::@7/(byte) line::y1#11 )
-  (byte) line::x1#7 ← phi( line::@7/(byte) line::x1#12 )
-  (byte) plot::x#5 ← (byte) line::x1#7
-  (byte) plot::y#5 ← (byte) line::y1#6
-  call plot param-assignment
-  to:line::@23
-line::@23: scope:[line]  from line::@22
+line::@6: scope:[line]  from line::@2
+  (byte[]) plot_bit#33 ← phi( line::@2/(byte[]) plot_bit#38 )
+  (byte[]) plot_ylo#32 ← phi( line::@2/(byte[]) plot_ylo#38 )
+  (byte[]) plot_yhi#32 ← phi( line::@2/(byte[]) plot_yhi#38 )
+  (byte[]) plot_xlo#33 ← phi( line::@2/(byte[]) plot_xlo#38 )
+  (byte[]) plot_xhi#33 ← phi( line::@2/(byte[]) plot_xhi#38 )
+  (byte) line::xd#6 ← phi( line::@2/(byte) line::xd#2 )
+  (byte) line::yd#6 ← phi( line::@2/(byte) line::yd#0 )
+  (byte) line::y0#7 ← phi( line::@2/(byte) line::y0#3 )
+  (byte) line::x1#5 ← phi( line::@2/(byte) line::x1#11 )
+  (byte) line::y1#6 ← phi( line::@2/(byte) line::y1#3 )
+  (byte) line_ydxd::y#0 ← (byte) line::y1#6
+  (byte) line_ydxd::x#0 ← (byte) line::x1#5
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#7
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#6
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#6
+  call line_ydxd param-assignment
+  to:line::@31
+line::@31: scope:[line]  from line::@6
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte[]) plot_bit#3 ← phi( line::@1/(byte[]) plot_bit#16 )
-  (byte[]) plot_ylo#3 ← phi( line::@1/(byte[]) plot_ylo#16 )
-  (byte[]) plot_yhi#3 ← phi( line::@1/(byte[]) plot_yhi#16 )
-  (byte[]) plot_xlo#3 ← phi( line::@1/(byte[]) plot_xlo#16 )
-  (byte[]) plot_xhi#3 ← phi( line::@1/(byte[]) plot_xhi#16 )
-  (byte) line::y1#12 ← phi( line::@1/(byte) line::y1#1 )
+line::@20: scope:[line]  from line::@2
+  (byte[]) plot_bit#24 ← phi( line::@2/(byte[]) plot_bit#38 )
+  (byte[]) plot_ylo#23 ← phi( line::@2/(byte[]) plot_ylo#38 )
+  (byte[]) plot_yhi#23 ← phi( line::@2/(byte[]) plot_yhi#38 )
+  (byte[]) plot_xlo#24 ← phi( line::@2/(byte[]) plot_xlo#38 )
+  (byte[]) plot_xhi#24 ← phi( line::@2/(byte[]) plot_xhi#38 )
+  (byte) line::yd#7 ← phi( line::@2/(byte) line::yd#0 )
+  (byte) line::xd#7 ← phi( line::@2/(byte) line::xd#2 )
+  (byte) line::x1#6 ← phi( line::@2/(byte) line::x1#11 )
+  (byte) line::y0#8 ← phi( line::@2/(byte) line::y0#3 )
+  (byte) line::x0#6 ← phi( line::@2/(byte) line::x0#11 )
+  (byte) line_xdyd::x#0 ← (byte) line::x0#6
+  (byte) line_xdyd::y#0 ← (byte) line::y0#8
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#6
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#7
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#7
+  call line_xdyd param-assignment
+  to:line::@32
+line::@32: scope:[line]  from line::@20
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte[]) plot_bit#40 ← phi( line::@1/(byte[]) plot_bit#42 )
+  (byte[]) plot_ylo#40 ← phi( line::@1/(byte[]) plot_ylo#43 )
+  (byte[]) plot_yhi#40 ← phi( line::@1/(byte[]) plot_yhi#43 )
+  (byte[]) plot_xlo#40 ← phi( line::@1/(byte[]) plot_xlo#42 )
+  (byte[]) plot_xhi#40 ← phi( line::@1/(byte[]) plot_xhi#42 )
+  (byte) line::x0#13 ← phi( line::@1/(byte) line::x0#2 )
   (byte) line::x1#13 ← phi( line::@1/(byte) line::x1#2 )
-  (byte) line::y0#8 ← phi( line::@1/(byte) line::y0#1 )
-  (byte) line::x0#8 ← phi( line::@1/(byte) line::x0#2 )
-  (byte) plot::x#6 ← (byte) line::x0#8
-  (byte) plot::y#6 ← (byte) line::y0#8
-  call plot param-assignment
+  (byte) line::xd#8 ← phi( line::@1/(byte) line::xd#0 )
+  (byte) line::y1#7 ← phi( line::@1/(byte) line::y1#1 )
+  (byte) line::y0#9 ← phi( line::@1/(byte) line::y0#1 )
+  (byte~) line::$23 ← (byte) line::y0#9 - (byte) line::y1#7
+  (byte) line::yd#2 ← (byte~) line::$23
+  (boolean~) line::$24 ← (byte) line::yd#2 < (byte) line::xd#8
+  (boolean~) line::$25 ← ! (boolean~) line::$24
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte[]) plot_bit#39 ← phi( line::@1/(byte[]) plot_bit#42 )
+  (byte[]) plot_ylo#39 ← phi( line::@1/(byte[]) plot_ylo#43 )
+  (byte[]) plot_yhi#39 ← phi( line::@1/(byte[]) plot_yhi#43 )
+  (byte[]) plot_xlo#39 ← phi( line::@1/(byte[]) plot_xlo#42 )
+  (byte[]) plot_xhi#39 ← phi( line::@1/(byte[]) plot_xhi#42 )
+  (byte) line::x1#12 ← phi( line::@1/(byte) line::x1#2 )
+  (byte) line::x0#12 ← phi( line::@1/(byte) line::x0#2 )
+  (byte) line::xd#9 ← phi( line::@1/(byte) line::xd#0 )
+  (byte) line::y0#10 ← phi( line::@1/(byte) line::y0#1 )
+  (byte) line::y1#8 ← phi( line::@1/(byte) line::y1#1 )
+  (byte~) line::$18 ← (byte) line::y1#8 - (byte) line::y0#10
+  (byte) line::yd#3 ← (byte~) line::$18
+  (boolean~) line::$19 ← (byte) line::yd#3 < (byte) line::xd#9
+  (boolean~) line::$20 ← ! (boolean~) line::$19
+  if((boolean~) line::$20) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte[]) plot_bit#8 ← phi( line::@15/(byte[]) plot_bit#3 )
-  (byte[]) plot_ylo#8 ← phi( line::@15/(byte[]) plot_ylo#3 )
-  (byte[]) plot_yhi#8 ← phi( line::@15/(byte[]) plot_yhi#3 )
-  (byte[]) plot_xlo#8 ← phi( line::@15/(byte[]) plot_xlo#3 )
-  (byte[]) plot_xhi#8 ← phi( line::@15/(byte[]) plot_xhi#3 )
-  (byte) line::y1#7 ← phi( line::@15/(byte) line::y1#12 )
-  (byte) line::x1#8 ← phi( line::@15/(byte) line::x1#13 )
-  (byte) plot::x#7 ← (byte) line::x1#8
-  (byte) plot::y#7 ← (byte) line::y1#7
-  call plot param-assignment
-  to:line::@25
-line::@25: scope:[line]  from line::@24
+line::@10: scope:[line]  from line::@23
+  (byte[]) plot_bit#32 ← phi( line::@23/(byte[]) plot_bit#39 )
+  (byte[]) plot_ylo#31 ← phi( line::@23/(byte[]) plot_ylo#39 )
+  (byte[]) plot_yhi#31 ← phi( line::@23/(byte[]) plot_yhi#39 )
+  (byte[]) plot_xlo#32 ← phi( line::@23/(byte[]) plot_xlo#39 )
+  (byte[]) plot_xhi#32 ← phi( line::@23/(byte[]) plot_xhi#39 )
+  (byte) line::xd#10 ← phi( line::@23/(byte) line::xd#9 )
+  (byte) line::yd#8 ← phi( line::@23/(byte) line::yd#3 )
+  (byte) line::y1#9 ← phi( line::@23/(byte) line::y1#8 )
+  (byte) line::x0#7 ← phi( line::@23/(byte) line::x0#12 )
+  (byte) line::y0#11 ← phi( line::@23/(byte) line::y0#10 )
+  (byte) line_ydxd::y#1 ← (byte) line::y0#11
+  (byte) line_ydxd::x#1 ← (byte) line::x0#7
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#9
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#8
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#10
+  call line_ydxd param-assignment
+  to:line::@33
+line::@33: scope:[line]  from line::@10
   to:line::@return
-line::@return: scope:[line]  from line::@18 line::@20 line::@21 line::@23 line::@25
+line::@24: scope:[line]  from line::@23
+  (byte[]) plot_bit#25 ← phi( line::@23/(byte[]) plot_bit#39 )
+  (byte[]) plot_ylo#24 ← phi( line::@23/(byte[]) plot_ylo#39 )
+  (byte[]) plot_yhi#24 ← phi( line::@23/(byte[]) plot_yhi#39 )
+  (byte[]) plot_xlo#25 ← phi( line::@23/(byte[]) plot_xlo#39 )
+  (byte[]) plot_xhi#25 ← phi( line::@23/(byte[]) plot_xhi#39 )
+  (byte) line::yd#9 ← phi( line::@23/(byte) line::yd#3 )
+  (byte) line::xd#11 ← phi( line::@23/(byte) line::xd#9 )
+  (byte) line::x0#8 ← phi( line::@23/(byte) line::x0#12 )
+  (byte) line::y1#10 ← phi( line::@23/(byte) line::y1#8 )
+  (byte) line::x1#7 ← phi( line::@23/(byte) line::x1#12 )
+  (byte) line_xdyd::x#1 ← (byte) line::x1#7
+  (byte) line_xdyd::y#1 ← (byte) line::y1#10
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#8
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#11
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#9
+  call line_xdyd param-assignment
+  to:line::@34
+line::@34: scope:[line]  from line::@24
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte[]) plot_bit#28 ← phi( line::@9/(byte[]) plot_bit#40 )
+  (byte[]) plot_ylo#27 ← phi( line::@9/(byte[]) plot_ylo#40 )
+  (byte[]) plot_yhi#27 ← phi( line::@9/(byte[]) plot_yhi#40 )
+  (byte[]) plot_xlo#28 ← phi( line::@9/(byte[]) plot_xlo#40 )
+  (byte[]) plot_xhi#28 ← phi( line::@9/(byte[]) plot_xhi#40 )
+  (byte) line::xd#12 ← phi( line::@9/(byte) line::xd#8 )
+  (byte) line::yd#10 ← phi( line::@9/(byte) line::yd#2 )
+  (byte) line::y0#12 ← phi( line::@9/(byte) line::y0#9 )
+  (byte) line::x1#8 ← phi( line::@9/(byte) line::x1#13 )
+  (byte) line::y1#11 ← phi( line::@9/(byte) line::y1#7 )
+  (byte) line_ydxi::y#1 ← (byte) line::y1#11
+  (byte) line_ydxi::x#1 ← (byte) line::x1#8
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#12
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#12
+  call line_ydxi param-assignment
+  to:line::@35
+line::@35: scope:[line]  from line::@13
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte[]) plot_bit#21 ← phi( line::@9/(byte[]) plot_bit#40 )
+  (byte[]) plot_ylo#20 ← phi( line::@9/(byte[]) plot_ylo#40 )
+  (byte[]) plot_yhi#20 ← phi( line::@9/(byte[]) plot_yhi#40 )
+  (byte[]) plot_xlo#21 ← phi( line::@9/(byte[]) plot_xlo#40 )
+  (byte[]) plot_xhi#21 ← phi( line::@9/(byte[]) plot_xhi#40 )
+  (byte) line::yd#11 ← phi( line::@9/(byte) line::yd#2 )
+  (byte) line::xd#13 ← phi( line::@9/(byte) line::xd#8 )
+  (byte) line::x0#9 ← phi( line::@9/(byte) line::x0#13 )
+  (byte) line::y1#12 ← phi( line::@9/(byte) line::y1#7 )
+  (byte) line::x1#9 ← phi( line::@9/(byte) line::x1#13 )
+  (byte) line_xdyi::x#1 ← (byte) line::x1#9
+  (byte) line_xdyi::y#1 ← (byte) line::y1#12
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#9
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#13
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#11
+  call line_xdyi param-assignment
+  to:line::@36
+line::@36: scope:[line]  from line::@27
+  to:line::@return
+line::@return: scope:[line]  from line::@29 line::@30 line::@31 line::@32 line::@33 line::@34 line::@35 line::@36
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::x1#5 ← phi( line::@11/(byte) line_xdyi::x1#0 )
-  (byte[]) plot_bit#17 ← phi( line::@11/(byte[]) plot_bit#23 )
-  (byte[]) plot_ylo#17 ← phi( line::@11/(byte[]) plot_ylo#22 )
-  (byte[]) plot_yhi#17 ← phi( line::@11/(byte[]) plot_yhi#22 )
-  (byte[]) plot_xlo#17 ← phi( line::@11/(byte[]) plot_xlo#23 )
-  (byte[]) plot_xhi#17 ← phi( line::@11/(byte[]) plot_xhi#23 )
-  (byte) line_xdyi::xd#4 ← phi( line::@11/(byte) line_xdyi::xd#0 )
-  (byte) line_xdyi::y#4 ← phi( line::@11/(byte) line_xdyi::y#0 )
-  (byte) line_xdyi::x#5 ← phi( line::@11/(byte) line_xdyi::x#0 )
-  (byte) line_xdyi::yd#1 ← phi( line::@11/(byte) line_xdyi::yd#0 )
-  (byte~) line_xdyi::$0 ← (byte) line_xdyi::yd#1 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte[]) plot_bit#9 ← phi( line::@17/(byte[]) plot_bit#20 line::@27/(byte[]) plot_bit#21 )
+  (byte[]) plot_ylo#9 ← phi( line::@17/(byte[]) plot_ylo#19 line::@27/(byte[]) plot_ylo#20 )
+  (byte[]) plot_yhi#9 ← phi( line::@17/(byte[]) plot_yhi#19 line::@27/(byte[]) plot_yhi#20 )
+  (byte[]) plot_xlo#9 ← phi( line::@17/(byte[]) plot_xlo#20 line::@27/(byte[]) plot_xlo#21 )
+  (byte[]) plot_xhi#9 ← phi( line::@17/(byte[]) plot_xhi#20 line::@27/(byte[]) plot_xhi#21 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte~) line_xdyi::$0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   (byte) line_xdyi::e#0 ← (byte~) line_xdyi::$0
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
-  (byte) line_xdyi::x1#4 ← phi( line_xdyi/(byte) line_xdyi::x1#5 line_xdyi::@2/(byte) line_xdyi::x1#1 )
-  (byte[]) plot_bit#11 ← phi( line_xdyi/(byte[]) plot_bit#17 line_xdyi::@2/(byte[]) plot_bit#18 )
-  (byte[]) plot_ylo#11 ← phi( line_xdyi/(byte[]) plot_ylo#17 line_xdyi::@2/(byte[]) plot_ylo#18 )
-  (byte[]) plot_yhi#11 ← phi( line_xdyi/(byte[]) plot_yhi#17 line_xdyi::@2/(byte[]) plot_yhi#18 )
-  (byte[]) plot_xlo#11 ← phi( line_xdyi/(byte[]) plot_xlo#17 line_xdyi::@2/(byte[]) plot_xlo#18 )
-  (byte[]) plot_xhi#11 ← phi( line_xdyi/(byte[]) plot_xhi#17 line_xdyi::@2/(byte[]) plot_xhi#18 )
-  (byte) line_xdyi::xd#3 ← phi( line_xdyi/(byte) line_xdyi::xd#4 line_xdyi::@2/(byte) line_xdyi::xd#5 )
-  (byte) line_xdyi::yd#3 ← phi( line_xdyi/(byte) line_xdyi::yd#1 line_xdyi::@2/(byte) line_xdyi::yd#4 )
+  (byte) line_xdyi::x1#5 ← phi( line_xdyi/(byte) line_xdyi::x1#6 line_xdyi::@2/(byte) line_xdyi::x1#2 )
+  (byte[]) plot_bit#4 ← phi( line_xdyi/(byte[]) plot_bit#9 line_xdyi::@2/(byte[]) plot_bit#10 )
+  (byte[]) plot_ylo#4 ← phi( line_xdyi/(byte[]) plot_ylo#9 line_xdyi::@2/(byte[]) plot_ylo#10 )
+  (byte[]) plot_yhi#4 ← phi( line_xdyi/(byte[]) plot_yhi#9 line_xdyi::@2/(byte[]) plot_yhi#10 )
+  (byte[]) plot_xlo#4 ← phi( line_xdyi/(byte[]) plot_xlo#9 line_xdyi::@2/(byte[]) plot_xlo#10 )
+  (byte[]) plot_xhi#4 ← phi( line_xdyi/(byte[]) plot_xhi#9 line_xdyi::@2/(byte[]) plot_xhi#10 )
+  (byte) line_xdyi::xd#4 ← phi( line_xdyi/(byte) line_xdyi::xd#5 line_xdyi::@2/(byte) line_xdyi::xd#6 )
+  (byte) line_xdyi::yd#4 ← phi( line_xdyi/(byte) line_xdyi::yd#2 line_xdyi::@2/(byte) line_xdyi::yd#5 )
   (byte) line_xdyi::e#5 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#4 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#5 line_xdyi::@2/(byte) line_xdyi::x#4 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#5 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte[]) plot_bit#25 ← phi( line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#24 ← phi( line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte[]) plot_yhi#24 ← phi( line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#25 ← phi( line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte[]) plot_xhi#25 ← phi( line_xdyi::@1/(byte[]) plot_xhi#11 )
-  (byte) line_xdyi::y#6 ← phi( line_xdyi::@1/(byte) line_xdyi::y#2 )
-  (byte) line_xdyi::x1#3 ← phi( line_xdyi::@1/(byte) line_xdyi::x1#4 )
-  (byte) line_xdyi::xd#1 ← phi( line_xdyi::@1/(byte) line_xdyi::xd#3 )
-  (byte) line_xdyi::yd#2 ← phi( line_xdyi::@1/(byte) line_xdyi::yd#3 )
+  (byte[]) plot_bit#23 ← phi( line_xdyi::@1/(byte[]) plot_bit#4 )
+  (byte[]) plot_ylo#22 ← phi( line_xdyi::@1/(byte[]) plot_ylo#4 )
+  (byte[]) plot_yhi#22 ← phi( line_xdyi::@1/(byte[]) plot_yhi#4 )
+  (byte[]) plot_xlo#23 ← phi( line_xdyi::@1/(byte[]) plot_xlo#4 )
+  (byte[]) plot_xhi#23 ← phi( line_xdyi::@1/(byte[]) plot_xhi#4 )
+  (byte) line_xdyi::y#7 ← phi( line_xdyi::@1/(byte) line_xdyi::y#3 )
+  (byte) line_xdyi::x1#4 ← phi( line_xdyi::@1/(byte) line_xdyi::x1#5 )
+  (byte) line_xdyi::xd#2 ← phi( line_xdyi::@1/(byte) line_xdyi::xd#4 )
+  (byte) line_xdyi::yd#3 ← phi( line_xdyi::@1/(byte) line_xdyi::yd#4 )
   (byte) line_xdyi::e#3 ← phi( line_xdyi::@1/(byte) line_xdyi::e#5 )
-  (byte) line_xdyi::x#3 ← phi( line_xdyi::@1/(byte) line_xdyi::x#2 )
-  (byte~) line_xdyi::$2 ← (byte) line_xdyi::x#3 + (byte) 1
-  (byte) line_xdyi::x#1 ← (byte~) line_xdyi::$2
-  (byte~) line_xdyi::$3 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  (byte) line_xdyi::x#4 ← phi( line_xdyi::@1/(byte) line_xdyi::x#3 )
+  (byte~) line_xdyi::$2 ← (byte) line_xdyi::x#4 + (byte) 1
+  (byte) line_xdyi::x#2 ← (byte~) line_xdyi::$2
+  (byte~) line_xdyi::$3 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#3
   (byte) line_xdyi::e#1 ← (byte~) line_xdyi::$3
-  (boolean~) line_xdyi::$4 ← (byte) line_xdyi::xd#1 < (byte) line_xdyi::e#1
+  (boolean~) line_xdyi::$4 ← (byte) line_xdyi::xd#2 < (byte) line_xdyi::e#1
   (boolean~) line_xdyi::$5 ← ! (boolean~) line_xdyi::$4
   if((boolean~) line_xdyi::$5) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
-  (byte[]) plot_bit#18 ← phi( line_xdyi::@3/(byte[]) plot_bit#24 line_xdyi::@5/(byte[]) plot_bit#25 )
-  (byte[]) plot_ylo#18 ← phi( line_xdyi::@3/(byte[]) plot_ylo#23 line_xdyi::@5/(byte[]) plot_ylo#24 )
-  (byte[]) plot_yhi#18 ← phi( line_xdyi::@3/(byte[]) plot_yhi#23 line_xdyi::@5/(byte[]) plot_yhi#24 )
-  (byte[]) plot_xlo#18 ← phi( line_xdyi::@3/(byte[]) plot_xlo#24 line_xdyi::@5/(byte[]) plot_xlo#25 )
-  (byte[]) plot_xhi#18 ← phi( line_xdyi::@3/(byte[]) plot_xhi#24 line_xdyi::@5/(byte[]) plot_xhi#25 )
-  (byte) line_xdyi::xd#5 ← phi( line_xdyi::@3/(byte) line_xdyi::xd#2 line_xdyi::@5/(byte) line_xdyi::xd#1 )
-  (byte) line_xdyi::yd#4 ← phi( line_xdyi::@3/(byte) line_xdyi::yd#5 line_xdyi::@5/(byte) line_xdyi::yd#2 )
+  (byte[]) plot_bit#10 ← phi( line_xdyi::@3/(byte[]) plot_bit#22 line_xdyi::@5/(byte[]) plot_bit#23 )
+  (byte[]) plot_ylo#10 ← phi( line_xdyi::@3/(byte[]) plot_ylo#21 line_xdyi::@5/(byte[]) plot_ylo#22 )
+  (byte[]) plot_yhi#10 ← phi( line_xdyi::@3/(byte[]) plot_yhi#21 line_xdyi::@5/(byte[]) plot_yhi#22 )
+  (byte[]) plot_xlo#10 ← phi( line_xdyi::@3/(byte[]) plot_xlo#22 line_xdyi::@5/(byte[]) plot_xlo#23 )
+  (byte[]) plot_xhi#10 ← phi( line_xdyi::@3/(byte[]) plot_xhi#22 line_xdyi::@5/(byte[]) plot_xhi#23 )
+  (byte) line_xdyi::xd#6 ← phi( line_xdyi::@3/(byte) line_xdyi::xd#3 line_xdyi::@5/(byte) line_xdyi::xd#2 )
+  (byte) line_xdyi::yd#5 ← phi( line_xdyi::@3/(byte) line_xdyi::yd#6 line_xdyi::@5/(byte) line_xdyi::yd#3 )
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#6 )
-  (byte) line_xdyi::x#4 ← phi( line_xdyi::@3/(byte) line_xdyi::x#6 line_xdyi::@5/(byte) line_xdyi::x#1 )
-  (byte) line_xdyi::x1#1 ← phi( line_xdyi::@3/(byte) line_xdyi::x1#2 line_xdyi::@5/(byte) line_xdyi::x1#3 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#1 + (byte) 1
-  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#4 < (byte~) line_xdyi::$8
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#7 )
+  (byte) line_xdyi::x#5 ← phi( line_xdyi::@3/(byte) line_xdyi::x#7 line_xdyi::@5/(byte) line_xdyi::x#2 )
+  (byte) line_xdyi::x1#2 ← phi( line_xdyi::@3/(byte) line_xdyi::x1#3 line_xdyi::@5/(byte) line_xdyi::x1#4 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#2 + (byte) 1
+  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#5 < (byte~) line_xdyi::$8
   if((boolean~) line_xdyi::$9) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte[]) plot_bit#24 ← phi( line_xdyi::@5/(byte[]) plot_bit#25 )
-  (byte[]) plot_ylo#23 ← phi( line_xdyi::@5/(byte[]) plot_ylo#24 )
-  (byte[]) plot_yhi#23 ← phi( line_xdyi::@5/(byte[]) plot_yhi#24 )
-  (byte[]) plot_xlo#24 ← phi( line_xdyi::@5/(byte[]) plot_xlo#25 )
-  (byte[]) plot_xhi#24 ← phi( line_xdyi::@5/(byte[]) plot_xhi#25 )
-  (byte) line_xdyi::yd#5 ← phi( line_xdyi::@5/(byte) line_xdyi::yd#2 )
-  (byte) line_xdyi::x#6 ← phi( line_xdyi::@5/(byte) line_xdyi::x#1 )
-  (byte) line_xdyi::x1#2 ← phi( line_xdyi::@5/(byte) line_xdyi::x1#3 )
-  (byte) line_xdyi::xd#2 ← phi( line_xdyi::@5/(byte) line_xdyi::xd#1 )
+  (byte[]) plot_bit#22 ← phi( line_xdyi::@5/(byte[]) plot_bit#23 )
+  (byte[]) plot_ylo#21 ← phi( line_xdyi::@5/(byte[]) plot_ylo#22 )
+  (byte[]) plot_yhi#21 ← phi( line_xdyi::@5/(byte[]) plot_yhi#22 )
+  (byte[]) plot_xlo#22 ← phi( line_xdyi::@5/(byte[]) plot_xlo#23 )
+  (byte[]) plot_xhi#22 ← phi( line_xdyi::@5/(byte[]) plot_xhi#23 )
+  (byte) line_xdyi::yd#6 ← phi( line_xdyi::@5/(byte) line_xdyi::yd#3 )
+  (byte) line_xdyi::x#7 ← phi( line_xdyi::@5/(byte) line_xdyi::x#2 )
+  (byte) line_xdyi::x1#3 ← phi( line_xdyi::@5/(byte) line_xdyi::x1#4 )
+  (byte) line_xdyi::xd#3 ← phi( line_xdyi::@5/(byte) line_xdyi::xd#2 )
   (byte) line_xdyi::e#4 ← phi( line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#3 ← phi( line_xdyi::@5/(byte) line_xdyi::y#6 )
-  (byte~) line_xdyi::$6 ← (byte) line_xdyi::y#3 + (byte) 1
-  (byte) line_xdyi::y#1 ← (byte~) line_xdyi::$6
-  (byte~) line_xdyi::$7 ← (byte) line_xdyi::e#4 - (byte) line_xdyi::xd#2
+  (byte) line_xdyi::y#4 ← phi( line_xdyi::@5/(byte) line_xdyi::y#7 )
+  (byte~) line_xdyi::$6 ← (byte) line_xdyi::y#4 + (byte) 1
+  (byte) line_xdyi::y#2 ← (byte~) line_xdyi::$6
+  (byte~) line_xdyi::$7 ← (byte) line_xdyi::e#4 - (byte) line_xdyi::xd#3
   (byte) line_xdyi::e#2 ← (byte~) line_xdyi::$7
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte[]) plot_bit#1 ← phi( line::@15/(byte[]) plot_bit#3 line::@17/(byte[]) plot_bit#4 line::@19/(byte[]) plot_bit#5 line::@2/(byte[]) plot_bit#6 line::@22/(byte[]) plot_bit#7 line::@24/(byte[]) plot_bit#8 line::@3/(byte[]) plot_bit#9 line::@7/(byte[]) plot_bit#10 line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#1 ← phi( line::@15/(byte[]) plot_ylo#3 line::@17/(byte[]) plot_ylo#4 line::@19/(byte[]) plot_ylo#5 line::@2/(byte[]) plot_ylo#6 line::@22/(byte[]) plot_ylo#7 line::@24/(byte[]) plot_ylo#8 line::@3/(byte[]) plot_ylo#9 line::@7/(byte[]) plot_ylo#10 line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte[]) plot_yhi#1 ← phi( line::@15/(byte[]) plot_yhi#3 line::@17/(byte[]) plot_yhi#4 line::@19/(byte[]) plot_yhi#5 line::@2/(byte[]) plot_yhi#6 line::@22/(byte[]) plot_yhi#7 line::@24/(byte[]) plot_yhi#8 line::@3/(byte[]) plot_yhi#9 line::@7/(byte[]) plot_yhi#10 line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#1 ← phi( line::@15/(byte[]) plot_xlo#3 line::@17/(byte[]) plot_xlo#4 line::@19/(byte[]) plot_xlo#5 line::@2/(byte[]) plot_xlo#6 line::@22/(byte[]) plot_xlo#7 line::@24/(byte[]) plot_xlo#8 line::@3/(byte[]) plot_xlo#9 line::@7/(byte[]) plot_xlo#10 line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte[]) plot_xhi#1 ← phi( line::@15/(byte[]) plot_xhi#3 line::@17/(byte[]) plot_xhi#4 line::@19/(byte[]) plot_xhi#5 line::@2/(byte[]) plot_xhi#6 line::@22/(byte[]) plot_xhi#7 line::@24/(byte[]) plot_xhi#8 line::@3/(byte[]) plot_xhi#9 line::@7/(byte[]) plot_xhi#10 line_xdyi::@1/(byte[]) plot_xhi#11 )
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte[]) plot_bit#11 ← phi( line::@20/(byte[]) plot_bit#24 line::@24/(byte[]) plot_bit#25 )
+  (byte[]) plot_ylo#11 ← phi( line::@20/(byte[]) plot_ylo#23 line::@24/(byte[]) plot_ylo#24 )
+  (byte[]) plot_yhi#11 ← phi( line::@20/(byte[]) plot_yhi#23 line::@24/(byte[]) plot_yhi#24 )
+  (byte[]) plot_xlo#11 ← phi( line::@20/(byte[]) plot_xlo#24 line::@24/(byte[]) plot_xlo#25 )
+  (byte[]) plot_xhi#11 ← phi( line::@20/(byte[]) plot_xhi#24 line::@24/(byte[]) plot_xhi#25 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte~) line_xdyd::$0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  (byte) line_xdyd::e#0 ← (byte~) line_xdyd::$0
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::x1#5 ← phi( line_xdyd/(byte) line_xdyd::x1#6 line_xdyd::@2/(byte) line_xdyd::x1#2 )
+  (byte[]) plot_bit#3 ← phi( line_xdyd/(byte[]) plot_bit#11 line_xdyd::@2/(byte[]) plot_bit#12 )
+  (byte[]) plot_ylo#3 ← phi( line_xdyd/(byte[]) plot_ylo#11 line_xdyd::@2/(byte[]) plot_ylo#12 )
+  (byte[]) plot_yhi#3 ← phi( line_xdyd/(byte[]) plot_yhi#11 line_xdyd::@2/(byte[]) plot_yhi#12 )
+  (byte[]) plot_xlo#3 ← phi( line_xdyd/(byte[]) plot_xlo#11 line_xdyd::@2/(byte[]) plot_xlo#12 )
+  (byte[]) plot_xhi#3 ← phi( line_xdyd/(byte[]) plot_xhi#11 line_xdyd::@2/(byte[]) plot_xhi#12 )
+  (byte) line_xdyd::xd#4 ← phi( line_xdyd/(byte) line_xdyd::xd#5 line_xdyd::@2/(byte) line_xdyd::xd#6 )
+  (byte) line_xdyd::yd#4 ← phi( line_xdyd/(byte) line_xdyd::yd#2 line_xdyd::@2/(byte) line_xdyd::yd#5 )
+  (byte) line_xdyd::e#5 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#5 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte[]) plot_bit#27 ← phi( line_xdyd::@1/(byte[]) plot_bit#3 )
+  (byte[]) plot_ylo#26 ← phi( line_xdyd::@1/(byte[]) plot_ylo#3 )
+  (byte[]) plot_yhi#26 ← phi( line_xdyd::@1/(byte[]) plot_yhi#3 )
+  (byte[]) plot_xlo#27 ← phi( line_xdyd::@1/(byte[]) plot_xlo#3 )
+  (byte[]) plot_xhi#27 ← phi( line_xdyd::@1/(byte[]) plot_xhi#3 )
+  (byte) line_xdyd::y#7 ← phi( line_xdyd::@1/(byte) line_xdyd::y#3 )
+  (byte) line_xdyd::x1#4 ← phi( line_xdyd::@1/(byte) line_xdyd::x1#5 )
+  (byte) line_xdyd::xd#2 ← phi( line_xdyd::@1/(byte) line_xdyd::xd#4 )
+  (byte) line_xdyd::yd#3 ← phi( line_xdyd::@1/(byte) line_xdyd::yd#4 )
+  (byte) line_xdyd::e#3 ← phi( line_xdyd::@1/(byte) line_xdyd::e#5 )
+  (byte) line_xdyd::x#4 ← phi( line_xdyd::@1/(byte) line_xdyd::x#3 )
+  (byte~) line_xdyd::$2 ← (byte) line_xdyd::x#4 + (byte) 1
+  (byte) line_xdyd::x#2 ← (byte~) line_xdyd::$2
+  (byte~) line_xdyd::$3 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#3
+  (byte) line_xdyd::e#1 ← (byte~) line_xdyd::$3
+  (boolean~) line_xdyd::$4 ← (byte) line_xdyd::xd#2 < (byte) line_xdyd::e#1
+  (boolean~) line_xdyd::$5 ← ! (boolean~) line_xdyd::$4
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte[]) plot_bit#12 ← phi( line_xdyd::@3/(byte[]) plot_bit#26 line_xdyd::@5/(byte[]) plot_bit#27 )
+  (byte[]) plot_ylo#12 ← phi( line_xdyd::@3/(byte[]) plot_ylo#25 line_xdyd::@5/(byte[]) plot_ylo#26 )
+  (byte[]) plot_yhi#12 ← phi( line_xdyd::@3/(byte[]) plot_yhi#25 line_xdyd::@5/(byte[]) plot_yhi#26 )
+  (byte[]) plot_xlo#12 ← phi( line_xdyd::@3/(byte[]) plot_xlo#26 line_xdyd::@5/(byte[]) plot_xlo#27 )
+  (byte[]) plot_xhi#12 ← phi( line_xdyd::@3/(byte[]) plot_xhi#26 line_xdyd::@5/(byte[]) plot_xhi#27 )
+  (byte) line_xdyd::xd#6 ← phi( line_xdyd::@3/(byte) line_xdyd::xd#3 line_xdyd::@5/(byte) line_xdyd::xd#2 )
+  (byte) line_xdyd::yd#5 ← phi( line_xdyd::@3/(byte) line_xdyd::yd#6 line_xdyd::@5/(byte) line_xdyd::yd#3 )
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#7 )
+  (byte) line_xdyd::x#5 ← phi( line_xdyd::@3/(byte) line_xdyd::x#7 line_xdyd::@5/(byte) line_xdyd::x#2 )
+  (byte) line_xdyd::x1#2 ← phi( line_xdyd::@3/(byte) line_xdyd::x1#3 line_xdyd::@5/(byte) line_xdyd::x1#4 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#2 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x#5 < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte[]) plot_bit#26 ← phi( line_xdyd::@5/(byte[]) plot_bit#27 )
+  (byte[]) plot_ylo#25 ← phi( line_xdyd::@5/(byte[]) plot_ylo#26 )
+  (byte[]) plot_yhi#25 ← phi( line_xdyd::@5/(byte[]) plot_yhi#26 )
+  (byte[]) plot_xlo#26 ← phi( line_xdyd::@5/(byte[]) plot_xlo#27 )
+  (byte[]) plot_xhi#26 ← phi( line_xdyd::@5/(byte[]) plot_xhi#27 )
+  (byte) line_xdyd::yd#6 ← phi( line_xdyd::@5/(byte) line_xdyd::yd#3 )
+  (byte) line_xdyd::x#7 ← phi( line_xdyd::@5/(byte) line_xdyd::x#2 )
+  (byte) line_xdyd::x1#3 ← phi( line_xdyd::@5/(byte) line_xdyd::x1#4 )
+  (byte) line_xdyd::xd#3 ← phi( line_xdyd::@5/(byte) line_xdyd::xd#2 )
+  (byte) line_xdyd::e#4 ← phi( line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#4 ← phi( line_xdyd::@5/(byte) line_xdyd::y#7 )
+  (byte~) line_xdyd::$6 ← (byte) line_xdyd::y#4 - (byte) 1
+  (byte) line_xdyd::y#2 ← (byte~) line_xdyd::$6
+  (byte~) line_xdyd::$7 ← (byte) line_xdyd::e#4 - (byte) line_xdyd::xd#3
+  (byte) line_xdyd::e#2 ← (byte~) line_xdyd::$7
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte[]) plot_bit#13 ← phi( line::@13/(byte[]) plot_bit#28 line::@3/(byte[]) plot_bit#29 )
+  (byte[]) plot_ylo#13 ← phi( line::@13/(byte[]) plot_ylo#27 line::@3/(byte[]) plot_ylo#28 )
+  (byte[]) plot_yhi#13 ← phi( line::@13/(byte[]) plot_yhi#27 line::@3/(byte[]) plot_yhi#28 )
+  (byte[]) plot_xlo#13 ← phi( line::@13/(byte[]) plot_xlo#28 line::@3/(byte[]) plot_xlo#29 )
+  (byte[]) plot_xhi#13 ← phi( line::@13/(byte[]) plot_xhi#28 line::@3/(byte[]) plot_xhi#29 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte~) line_ydxi::$0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  (byte) line_ydxi::e#0 ← (byte~) line_ydxi::$0
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::y1#5 ← phi( line_ydxi/(byte) line_ydxi::y1#6 line_ydxi::@2/(byte) line_ydxi::y1#2 )
+  (byte[]) plot_bit#6 ← phi( line_ydxi/(byte[]) plot_bit#13 line_ydxi::@2/(byte[]) plot_bit#14 )
+  (byte[]) plot_ylo#6 ← phi( line_ydxi/(byte[]) plot_ylo#13 line_ydxi::@2/(byte[]) plot_ylo#14 )
+  (byte[]) plot_yhi#6 ← phi( line_ydxi/(byte[]) plot_yhi#13 line_ydxi::@2/(byte[]) plot_yhi#14 )
+  (byte[]) plot_xlo#6 ← phi( line_ydxi/(byte[]) plot_xlo#13 line_ydxi::@2/(byte[]) plot_xlo#14 )
+  (byte[]) plot_xhi#6 ← phi( line_ydxi/(byte[]) plot_xhi#13 line_ydxi::@2/(byte[]) plot_xhi#14 )
+  (byte) line_ydxi::yd#4 ← phi( line_ydxi/(byte) line_ydxi::yd#5 line_ydxi::@2/(byte) line_ydxi::yd#6 )
+  (byte) line_ydxi::xd#4 ← phi( line_ydxi/(byte) line_ydxi::xd#2 line_ydxi::@2/(byte) line_ydxi::xd#5 )
+  (byte) line_ydxi::e#5 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#5 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte[]) plot_bit#31 ← phi( line_ydxi::@1/(byte[]) plot_bit#6 )
+  (byte[]) plot_ylo#30 ← phi( line_ydxi::@1/(byte[]) plot_ylo#6 )
+  (byte[]) plot_yhi#30 ← phi( line_ydxi::@1/(byte[]) plot_yhi#6 )
+  (byte[]) plot_xlo#31 ← phi( line_ydxi::@1/(byte[]) plot_xlo#6 )
+  (byte[]) plot_xhi#31 ← phi( line_ydxi::@1/(byte[]) plot_xhi#6 )
+  (byte) line_ydxi::x#7 ← phi( line_ydxi::@1/(byte) line_ydxi::x#3 )
+  (byte) line_ydxi::y1#4 ← phi( line_ydxi::@1/(byte) line_ydxi::y1#5 )
+  (byte) line_ydxi::yd#2 ← phi( line_ydxi::@1/(byte) line_ydxi::yd#4 )
+  (byte) line_ydxi::xd#3 ← phi( line_ydxi::@1/(byte) line_ydxi::xd#4 )
+  (byte) line_ydxi::e#3 ← phi( line_ydxi::@1/(byte) line_ydxi::e#5 )
+  (byte) line_ydxi::y#4 ← phi( line_ydxi::@1/(byte) line_ydxi::y#3 )
+  (byte~) line_ydxi::$2 ← (byte) line_ydxi::y#4 + (byte) 1
+  (byte) line_ydxi::y#2 ← (byte~) line_ydxi::$2
+  (byte~) line_ydxi::$3 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#3
+  (byte) line_ydxi::e#1 ← (byte~) line_ydxi::$3
+  (boolean~) line_ydxi::$4 ← (byte) line_ydxi::yd#2 < (byte) line_ydxi::e#1
+  (boolean~) line_ydxi::$5 ← ! (boolean~) line_ydxi::$4
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte[]) plot_bit#14 ← phi( line_ydxi::@3/(byte[]) plot_bit#30 line_ydxi::@5/(byte[]) plot_bit#31 )
+  (byte[]) plot_ylo#14 ← phi( line_ydxi::@3/(byte[]) plot_ylo#29 line_ydxi::@5/(byte[]) plot_ylo#30 )
+  (byte[]) plot_yhi#14 ← phi( line_ydxi::@3/(byte[]) plot_yhi#29 line_ydxi::@5/(byte[]) plot_yhi#30 )
+  (byte[]) plot_xlo#14 ← phi( line_ydxi::@3/(byte[]) plot_xlo#30 line_ydxi::@5/(byte[]) plot_xlo#31 )
+  (byte[]) plot_xhi#14 ← phi( line_ydxi::@3/(byte[]) plot_xhi#30 line_ydxi::@5/(byte[]) plot_xhi#31 )
+  (byte) line_ydxi::yd#6 ← phi( line_ydxi::@3/(byte) line_ydxi::yd#3 line_ydxi::@5/(byte) line_ydxi::yd#2 )
+  (byte) line_ydxi::xd#5 ← phi( line_ydxi::@3/(byte) line_ydxi::xd#6 line_ydxi::@5/(byte) line_ydxi::xd#3 )
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#7 )
+  (byte) line_ydxi::y#5 ← phi( line_ydxi::@3/(byte) line_ydxi::y#7 line_ydxi::@5/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::y1#2 ← phi( line_ydxi::@3/(byte) line_ydxi::y1#3 line_ydxi::@5/(byte) line_ydxi::y1#4 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#2 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y#5 < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte[]) plot_bit#30 ← phi( line_ydxi::@5/(byte[]) plot_bit#31 )
+  (byte[]) plot_ylo#29 ← phi( line_ydxi::@5/(byte[]) plot_ylo#30 )
+  (byte[]) plot_yhi#29 ← phi( line_ydxi::@5/(byte[]) plot_yhi#30 )
+  (byte[]) plot_xlo#30 ← phi( line_ydxi::@5/(byte[]) plot_xlo#31 )
+  (byte[]) plot_xhi#30 ← phi( line_ydxi::@5/(byte[]) plot_xhi#31 )
+  (byte) line_ydxi::xd#6 ← phi( line_ydxi::@5/(byte) line_ydxi::xd#3 )
+  (byte) line_ydxi::y#7 ← phi( line_ydxi::@5/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::y1#3 ← phi( line_ydxi::@5/(byte) line_ydxi::y1#4 )
+  (byte) line_ydxi::yd#3 ← phi( line_ydxi::@5/(byte) line_ydxi::yd#2 )
+  (byte) line_ydxi::e#4 ← phi( line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#4 ← phi( line_ydxi::@5/(byte) line_ydxi::x#7 )
+  (byte~) line_ydxi::$6 ← (byte) line_ydxi::x#4 + (byte) 1
+  (byte) line_ydxi::x#2 ← (byte~) line_ydxi::$6
+  (byte~) line_ydxi::$7 ← (byte) line_ydxi::e#4 - (byte) line_ydxi::yd#3
+  (byte) line_ydxi::e#2 ← (byte~) line_ydxi::$7
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte[]) plot_bit#15 ← phi( line::@10/(byte[]) plot_bit#32 line::@6/(byte[]) plot_bit#33 )
+  (byte[]) plot_ylo#15 ← phi( line::@10/(byte[]) plot_ylo#31 line::@6/(byte[]) plot_ylo#32 )
+  (byte[]) plot_yhi#15 ← phi( line::@10/(byte[]) plot_yhi#31 line::@6/(byte[]) plot_yhi#32 )
+  (byte[]) plot_xlo#15 ← phi( line::@10/(byte[]) plot_xlo#32 line::@6/(byte[]) plot_xlo#33 )
+  (byte[]) plot_xhi#15 ← phi( line::@10/(byte[]) plot_xhi#32 line::@6/(byte[]) plot_xhi#33 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte~) line_ydxd::$0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  (byte) line_ydxd::e#0 ← (byte~) line_ydxd::$0
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::y1#5 ← phi( line_ydxd/(byte) line_ydxd::y1#6 line_ydxd::@2/(byte) line_ydxd::y1#2 )
+  (byte[]) plot_bit#5 ← phi( line_ydxd/(byte[]) plot_bit#15 line_ydxd::@2/(byte[]) plot_bit#16 )
+  (byte[]) plot_ylo#5 ← phi( line_ydxd/(byte[]) plot_ylo#15 line_ydxd::@2/(byte[]) plot_ylo#16 )
+  (byte[]) plot_yhi#5 ← phi( line_ydxd/(byte[]) plot_yhi#15 line_ydxd::@2/(byte[]) plot_yhi#16 )
+  (byte[]) plot_xlo#5 ← phi( line_ydxd/(byte[]) plot_xlo#15 line_ydxd::@2/(byte[]) plot_xlo#16 )
+  (byte[]) plot_xhi#5 ← phi( line_ydxd/(byte[]) plot_xhi#15 line_ydxd::@2/(byte[]) plot_xhi#16 )
+  (byte) line_ydxd::yd#4 ← phi( line_ydxd/(byte) line_ydxd::yd#5 line_ydxd::@2/(byte) line_ydxd::yd#6 )
+  (byte) line_ydxd::xd#4 ← phi( line_ydxd/(byte) line_ydxd::xd#2 line_ydxd::@2/(byte) line_ydxd::xd#5 )
+  (byte) line_ydxd::e#5 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#5 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte[]) plot_bit#35 ← phi( line_ydxd::@1/(byte[]) plot_bit#5 )
+  (byte[]) plot_ylo#34 ← phi( line_ydxd::@1/(byte[]) plot_ylo#5 )
+  (byte[]) plot_yhi#34 ← phi( line_ydxd::@1/(byte[]) plot_yhi#5 )
+  (byte[]) plot_xlo#35 ← phi( line_ydxd::@1/(byte[]) plot_xlo#5 )
+  (byte[]) plot_xhi#35 ← phi( line_ydxd::@1/(byte[]) plot_xhi#5 )
+  (byte) line_ydxd::x#7 ← phi( line_ydxd::@1/(byte) line_ydxd::x#3 )
+  (byte) line_ydxd::y1#4 ← phi( line_ydxd::@1/(byte) line_ydxd::y1#5 )
+  (byte) line_ydxd::yd#2 ← phi( line_ydxd::@1/(byte) line_ydxd::yd#4 )
+  (byte) line_ydxd::xd#3 ← phi( line_ydxd::@1/(byte) line_ydxd::xd#4 )
+  (byte) line_ydxd::e#3 ← phi( line_ydxd::@1/(byte) line_ydxd::e#5 )
+  (byte) line_ydxd::y#4 ← phi( line_ydxd::@1/(byte) line_ydxd::y#3 )
+  (byte~) line_ydxd::$2 ← (byte) line_ydxd::y#4 + (byte) 1
+  (byte) line_ydxd::y#2 ← (byte~) line_ydxd::$2
+  (byte~) line_ydxd::$3 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#3
+  (byte) line_ydxd::e#1 ← (byte~) line_ydxd::$3
+  (boolean~) line_ydxd::$4 ← (byte) line_ydxd::yd#2 < (byte) line_ydxd::e#1
+  (boolean~) line_ydxd::$5 ← ! (boolean~) line_ydxd::$4
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte[]) plot_bit#16 ← phi( line_ydxd::@3/(byte[]) plot_bit#34 line_ydxd::@5/(byte[]) plot_bit#35 )
+  (byte[]) plot_ylo#16 ← phi( line_ydxd::@3/(byte[]) plot_ylo#33 line_ydxd::@5/(byte[]) plot_ylo#34 )
+  (byte[]) plot_yhi#16 ← phi( line_ydxd::@3/(byte[]) plot_yhi#33 line_ydxd::@5/(byte[]) plot_yhi#34 )
+  (byte[]) plot_xlo#16 ← phi( line_ydxd::@3/(byte[]) plot_xlo#34 line_ydxd::@5/(byte[]) plot_xlo#35 )
+  (byte[]) plot_xhi#16 ← phi( line_ydxd::@3/(byte[]) plot_xhi#34 line_ydxd::@5/(byte[]) plot_xhi#35 )
+  (byte) line_ydxd::yd#6 ← phi( line_ydxd::@3/(byte) line_ydxd::yd#3 line_ydxd::@5/(byte) line_ydxd::yd#2 )
+  (byte) line_ydxd::xd#5 ← phi( line_ydxd::@3/(byte) line_ydxd::xd#6 line_ydxd::@5/(byte) line_ydxd::xd#3 )
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#7 )
+  (byte) line_ydxd::y#5 ← phi( line_ydxd::@3/(byte) line_ydxd::y#7 line_ydxd::@5/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::y1#2 ← phi( line_ydxd::@3/(byte) line_ydxd::y1#3 line_ydxd::@5/(byte) line_ydxd::y1#4 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#2 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y#5 < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte[]) plot_bit#34 ← phi( line_ydxd::@5/(byte[]) plot_bit#35 )
+  (byte[]) plot_ylo#33 ← phi( line_ydxd::@5/(byte[]) plot_ylo#34 )
+  (byte[]) plot_yhi#33 ← phi( line_ydxd::@5/(byte[]) plot_yhi#34 )
+  (byte[]) plot_xlo#34 ← phi( line_ydxd::@5/(byte[]) plot_xlo#35 )
+  (byte[]) plot_xhi#34 ← phi( line_ydxd::@5/(byte[]) plot_xhi#35 )
+  (byte) line_ydxd::xd#6 ← phi( line_ydxd::@5/(byte) line_ydxd::xd#3 )
+  (byte) line_ydxd::y#7 ← phi( line_ydxd::@5/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::y1#3 ← phi( line_ydxd::@5/(byte) line_ydxd::y1#4 )
+  (byte) line_ydxd::yd#3 ← phi( line_ydxd::@5/(byte) line_ydxd::yd#2 )
+  (byte) line_ydxd::e#4 ← phi( line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#4 ← phi( line_ydxd::@5/(byte) line_ydxd::x#7 )
+  (byte~) line_ydxd::$6 ← (byte) line_ydxd::x#4 - (byte) 1
+  (byte) line_ydxd::x#2 ← (byte~) line_ydxd::$6
+  (byte~) line_ydxd::$7 ← (byte) line_ydxd::e#4 - (byte) line_ydxd::yd#3
+  (byte) line_ydxd::e#2 ← (byte~) line_ydxd::$7
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte[]) plot_bit#1 ← phi( line_xdyd::@1/(byte[]) plot_bit#3 line_xdyi::@1/(byte[]) plot_bit#4 line_ydxd::@1/(byte[]) plot_bit#5 line_ydxi::@1/(byte[]) plot_bit#6 )
+  (byte[]) plot_ylo#1 ← phi( line_xdyd::@1/(byte[]) plot_ylo#3 line_xdyi::@1/(byte[]) plot_ylo#4 line_ydxd::@1/(byte[]) plot_ylo#5 line_ydxi::@1/(byte[]) plot_ylo#6 )
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte[]) plot_yhi#1 ← phi( line_xdyd::@1/(byte[]) plot_yhi#3 line_xdyi::@1/(byte[]) plot_yhi#4 line_ydxd::@1/(byte[]) plot_yhi#5 line_ydxi::@1/(byte[]) plot_yhi#6 )
+  (byte[]) plot_xlo#1 ← phi( line_xdyd::@1/(byte[]) plot_xlo#3 line_xdyi::@1/(byte[]) plot_xlo#4 line_ydxd::@1/(byte[]) plot_xlo#5 line_ydxi::@1/(byte[]) plot_xlo#6 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte[]) plot_xhi#1 ← phi( line_xdyd::@1/(byte[]) plot_xhi#3 line_xdyi::@1/(byte[]) plot_xhi#4 line_ydxd::@1/(byte[]) plot_xhi#5 line_ydxi::@1/(byte[]) plot_xhi#6 )
   (byte*) plot::plotter_x#0 ← (byte) 0
   (byte*) plot::plotter_y#0 ← (byte) 0
-  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#9
+  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte~) plot::$4 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte*) plot::plotter#0 ← (byte~) plot::$4
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -2417,23 +3705,23 @@ plot::@return: scope:[plot]  from plot
   return 
   to:@return
 init_plot_tables: scope:[init_plot_tables]  from main::@3
-  (byte[]) plot_yhi#28 ← phi( main::@3/(byte[]) plot_yhi#31 )
-  (byte[]) plot_ylo#28 ← phi( main::@3/(byte[]) plot_ylo#31 )
-  (byte[]) plot_bit#12 ← phi( main::@3/(byte[]) plot_bit#19 )
-  (byte[]) plot_xhi#12 ← phi( main::@3/(byte[]) plot_xhi#19 )
+  (byte[]) plot_yhi#41 ← phi( main::@3/(byte[]) plot_yhi#44 )
+  (byte[]) plot_ylo#41 ← phi( main::@3/(byte[]) plot_ylo#44 )
+  (byte[]) plot_bit#7 ← phi( main::@3/(byte[]) plot_bit#17 )
+  (byte[]) plot_xhi#7 ← phi( main::@3/(byte[]) plot_xhi#17 )
   (byte*) BITMAP#4 ← phi( main::@3/(byte*) BITMAP#8 )
-  (byte[]) plot_xlo#12 ← phi( main::@3/(byte[]) plot_xlo#19 )
+  (byte[]) plot_xlo#7 ← phi( main::@3/(byte[]) plot_xlo#17 )
   (byte) init_plot_tables::bit#0 ← (byte) 128
   (byte) init_plot_tables::x#0 ← (byte) 0
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@2
-  (byte[]) plot_yhi#25 ← phi( init_plot_tables/(byte[]) plot_yhi#28 init_plot_tables::@2/(byte[]) plot_yhi#19 )
-  (byte[]) plot_ylo#25 ← phi( init_plot_tables/(byte[]) plot_ylo#28 init_plot_tables::@2/(byte[]) plot_ylo#19 )
-  (byte[]) plot_bit#2 ← phi( init_plot_tables/(byte[]) plot_bit#12 init_plot_tables::@2/(byte[]) plot_bit#13 )
+  (byte[]) plot_yhi#35 ← phi( init_plot_tables/(byte[]) plot_yhi#41 init_plot_tables::@2/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#35 ← phi( init_plot_tables/(byte[]) plot_ylo#41 init_plot_tables::@2/(byte[]) plot_ylo#17 )
+  (byte[]) plot_bit#2 ← phi( init_plot_tables/(byte[]) plot_bit#7 init_plot_tables::@2/(byte[]) plot_bit#8 )
   (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) init_plot_tables::bit#0 init_plot_tables::@2/(byte) init_plot_tables::bit#4 )
-  (byte[]) plot_xhi#2 ← phi( init_plot_tables/(byte[]) plot_xhi#12 init_plot_tables::@2/(byte[]) plot_xhi#13 )
+  (byte[]) plot_xhi#2 ← phi( init_plot_tables/(byte[]) plot_xhi#7 init_plot_tables::@2/(byte[]) plot_xhi#8 )
   (byte*) BITMAP#1 ← phi( init_plot_tables/(byte*) BITMAP#4 init_plot_tables::@2/(byte*) BITMAP#5 )
-  (byte[]) plot_xlo#2 ← phi( init_plot_tables/(byte[]) plot_xlo#12 init_plot_tables::@2/(byte[]) plot_xlo#13 )
+  (byte[]) plot_xlo#2 ← phi( init_plot_tables/(byte[]) plot_xlo#7 init_plot_tables::@2/(byte[]) plot_xlo#8 )
   (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) init_plot_tables::x#0 init_plot_tables::@2/(byte) init_plot_tables::x#1 )
   (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248
   *((byte[]) plot_xlo#2 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0
@@ -2447,37 +3735,37 @@ init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_
   if((boolean~) init_plot_tables::$4) goto init_plot_tables::@2
   to:init_plot_tables::@5
 init_plot_tables::@2: scope:[init_plot_tables]  from init_plot_tables::@1 init_plot_tables::@5
-  (byte[]) plot_yhi#19 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#25 init_plot_tables::@5/(byte[]) plot_yhi#26 )
-  (byte[]) plot_ylo#19 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#25 init_plot_tables::@5/(byte[]) plot_ylo#26 )
-  (byte[]) plot_bit#13 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 init_plot_tables::@5/(byte[]) plot_bit#20 )
+  (byte[]) plot_yhi#17 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#35 init_plot_tables::@5/(byte[]) plot_yhi#36 )
+  (byte[]) plot_ylo#17 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#35 init_plot_tables::@5/(byte[]) plot_ylo#36 )
+  (byte[]) plot_bit#8 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 init_plot_tables::@5/(byte[]) plot_bit#18 )
   (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@1/(byte) init_plot_tables::bit#1 init_plot_tables::@5/(byte) init_plot_tables::bit#2 )
-  (byte[]) plot_xhi#13 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 init_plot_tables::@5/(byte[]) plot_xhi#20 )
+  (byte[]) plot_xhi#8 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 init_plot_tables::@5/(byte[]) plot_xhi#18 )
   (byte*) BITMAP#5 ← phi( init_plot_tables::@1/(byte*) BITMAP#1 init_plot_tables::@5/(byte*) BITMAP#9 )
-  (byte[]) plot_xlo#13 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 init_plot_tables::@5/(byte[]) plot_xlo#20 )
+  (byte[]) plot_xlo#8 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 init_plot_tables::@5/(byte[]) plot_xlo#18 )
   (byte) init_plot_tables::x#3 ← phi( init_plot_tables::@1/(byte) init_plot_tables::x#2 init_plot_tables::@5/(byte) init_plot_tables::x#4 )
   (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#3
   (boolean~) init_plot_tables::$5 ← (byte) init_plot_tables::x#1 != (byte) 0
   if((boolean~) init_plot_tables::$5) goto init_plot_tables::@1
   to:init_plot_tables::@6
 init_plot_tables::@5: scope:[init_plot_tables]  from init_plot_tables::@1
-  (byte[]) plot_yhi#26 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#25 )
-  (byte[]) plot_ylo#26 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#25 )
-  (byte[]) plot_bit#20 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 )
-  (byte[]) plot_xhi#20 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 )
+  (byte[]) plot_yhi#36 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#35 )
+  (byte[]) plot_ylo#36 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#35 )
+  (byte[]) plot_bit#18 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 )
+  (byte[]) plot_xhi#18 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 )
   (byte*) BITMAP#9 ← phi( init_plot_tables::@1/(byte*) BITMAP#1 )
-  (byte[]) plot_xlo#20 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 )
+  (byte[]) plot_xlo#18 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 )
   (byte) init_plot_tables::x#4 ← phi( init_plot_tables::@1/(byte) init_plot_tables::x#2 )
   (byte) init_plot_tables::bit#2 ← (byte) 128
   to:init_plot_tables::@2
 init_plot_tables::@6: scope:[init_plot_tables]  from init_plot_tables::@2
-  (byte[]) plot_yhi#13 ← phi( init_plot_tables::@2/(byte[]) plot_yhi#19 )
-  (byte[]) plot_ylo#13 ← phi( init_plot_tables::@2/(byte[]) plot_ylo#19 )
+  (byte[]) plot_yhi#8 ← phi( init_plot_tables::@2/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#8 ← phi( init_plot_tables::@2/(byte[]) plot_ylo#17 )
   (byte*) init_plot_tables::yoffs#0 ← (byte) 0
   (byte) init_plot_tables::y#0 ← (byte) 0
   to:init_plot_tables::@3
 init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_plot_tables::@6
-  (byte[]) plot_yhi#2 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#12 init_plot_tables::@6/(byte[]) plot_yhi#13 )
-  (byte[]) plot_ylo#2 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#12 init_plot_tables::@6/(byte[]) plot_ylo#13 )
+  (byte[]) plot_yhi#2 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#7 init_plot_tables::@6/(byte[]) plot_yhi#8 )
+  (byte[]) plot_ylo#2 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#7 init_plot_tables::@6/(byte[]) plot_ylo#8 )
   (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@6/(byte*) init_plot_tables::yoffs#0 )
   (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@6/(byte) init_plot_tables::y#0 )
   (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7
@@ -2492,8 +3780,8 @@ init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_p
   if((boolean~) init_plot_tables::$12) goto init_plot_tables::@4
   to:init_plot_tables::@7
 init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_plot_tables::@7
-  (byte[]) plot_yhi#12 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 init_plot_tables::@7/(byte[]) plot_yhi#20 )
-  (byte[]) plot_ylo#12 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 init_plot_tables::@7/(byte[]) plot_ylo#20 )
+  (byte[]) plot_yhi#7 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 init_plot_tables::@7/(byte[]) plot_yhi#18 )
+  (byte[]) plot_ylo#7 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 init_plot_tables::@7/(byte[]) plot_ylo#18 )
   (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 init_plot_tables::@7/(byte*) init_plot_tables::yoffs#1 )
   (byte) init_plot_tables::y#3 ← phi( init_plot_tables::@3/(byte) init_plot_tables::y#2 init_plot_tables::@7/(byte) init_plot_tables::y#4 )
   (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#3
@@ -2501,8 +3789,8 @@ init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_p
   if((boolean~) init_plot_tables::$14) goto init_plot_tables::@3
   to:init_plot_tables::@return
 init_plot_tables::@7: scope:[init_plot_tables]  from init_plot_tables::@3
-  (byte[]) plot_yhi#20 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 )
-  (byte[]) plot_ylo#20 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 )
+  (byte[]) plot_yhi#18 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 )
+  (byte[]) plot_ylo#18 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 )
   (byte) init_plot_tables::y#4 ← phi( init_plot_tables::@3/(byte) init_plot_tables::y#2 )
   (byte*) init_plot_tables::yoffs#3 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 )
   (byte*~) init_plot_tables::$13 ← (byte*) init_plot_tables::yoffs#3 + (word) 320
@@ -2542,16 +3830,16 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
-  (byte[]) plot_yhi#34 ← phi( @begin/(byte[]) plot_yhi#0 )
-  (byte[]) plot_ylo#34 ← phi( @begin/(byte[]) plot_ylo#0 )
+@10: scope:[]  from @begin
+  (byte[]) plot_yhi#47 ← phi( @begin/(byte[]) plot_yhi#0 )
+  (byte[]) plot_ylo#47 ← phi( @begin/(byte[]) plot_ylo#0 )
   (byte) lines_cnt#9 ← phi( @begin/(byte) lines_cnt#0 )
   (byte[]) lines_y#9 ← phi( @begin/(byte[]) lines_y#0 )
   (byte[]) lines_x#9 ← phi( @begin/(byte[]) lines_x#0 )
   (byte*) SCREEN#6 ← phi( @begin/(byte*) SCREEN#0 )
-  (byte[]) plot_bit#26 ← phi( @begin/(byte[]) plot_bit#0 )
-  (byte[]) plot_xhi#26 ← phi( @begin/(byte[]) plot_xhi#0 )
-  (byte[]) plot_xlo#26 ← phi( @begin/(byte[]) plot_xlo#0 )
+  (byte[]) plot_bit#36 ← phi( @begin/(byte[]) plot_bit#0 )
+  (byte[]) plot_xhi#36 ← phi( @begin/(byte[]) plot_xhi#0 )
+  (byte[]) plot_xlo#36 ← phi( @begin/(byte[]) plot_xlo#0 )
   (byte*) BITMAP#7 ← phi( @begin/(byte*) BITMAP#0 )
   (byte*) D018#2 ← phi( @begin/(byte*) D018#0 )
   (byte*) D011#2 ← phi( @begin/(byte*) D011#0 )
@@ -2561,14 +3849,14 @@ init_screen::@return: scope:[init_screen]  from init_screen::@2
   (byte*) FGCOL#2 ← phi( @begin/(byte*) FGCOL#0 )
   (byte*) BGCOL#2 ← phi( @begin/(byte*) BGCOL#0 )
   call main param-assignment
-  to:@8
-@8: scope:[]  from @7
+  to:@11
+@11: scope:[]  from @10
   to:@end
-@end: scope:[]  from @8
+@end: scope:[]  from @11
 
 INITIAL SSA SYMBOL TABLE
-(label) @7
-(label) @8
+(label) @10
+(label) @11
 (label) @begin
 (label) @end
 (byte*) BGCOL
@@ -2700,10 +3988,19 @@ INITIAL SSA SYMBOL TABLE
 (void()) line((byte) line::x0 , (byte) line::x1 , (byte) line::y0 , (byte) line::y1)
 (boolean~) line::$0
 (boolean~) line::$1
-(byte~) line::$13
-(boolean~) line::$14
-(boolean~) line::$15
+(byte~) line::$10
+(boolean~) line::$11
+(boolean~) line::$12
+(byte~) line::$15
+(boolean~) line::$16
+(boolean~) line::$17
+(byte~) line::$18
+(boolean~) line::$19
 (byte~) line::$2
+(boolean~) line::$20
+(byte~) line::$23
+(boolean~) line::$24
+(boolean~) line::$25
 (boolean~) line::$3
 (boolean~) line::$4
 (byte~) line::$5
@@ -2711,25 +4008,34 @@ INITIAL SSA SYMBOL TABLE
 (boolean~) line::$7
 (label) line::@1
 (label) line::@10
-(label) line::@11
+(label) line::@13
 (label) line::@15
+(label) line::@16
 (label) line::@17
-(label) line::@18
-(label) line::@19
 (label) line::@2
 (label) line::@20
-(label) line::@21
-(label) line::@22
 (label) line::@23
 (label) line::@24
-(label) line::@25
+(label) line::@27
+(label) line::@29
 (label) line::@3
-(label) line::@7
+(label) line::@30
+(label) line::@31
+(label) line::@32
+(label) line::@33
+(label) line::@34
+(label) line::@35
+(label) line::@36
+(label) line::@6
 (label) line::@9
 (label) line::@return
 (byte) line::x0
 (byte) line::x0#0
 (byte) line::x0#1
+(byte) line::x0#10
+(byte) line::x0#11
+(byte) line::x0#12
+(byte) line::x0#13
 (byte) line::x0#2
 (byte) line::x0#3
 (byte) line::x0#4
@@ -2756,11 +4062,25 @@ INITIAL SSA SYMBOL TABLE
 (byte) line::xd
 (byte) line::xd#0
 (byte) line::xd#1
+(byte) line::xd#10
+(byte) line::xd#11
+(byte) line::xd#12
+(byte) line::xd#13
 (byte) line::xd#2
 (byte) line::xd#3
+(byte) line::xd#4
+(byte) line::xd#5
+(byte) line::xd#6
+(byte) line::xd#7
+(byte) line::xd#8
+(byte) line::xd#9
 (byte) line::y0
 (byte) line::y0#0
 (byte) line::y0#1
+(byte) line::y0#10
+(byte) line::y0#11
+(byte) line::y0#12
+(byte) line::y0#13
 (byte) line::y0#2
 (byte) line::y0#3
 (byte) line::y0#4
@@ -2775,6 +4095,7 @@ INITIAL SSA SYMBOL TABLE
 (byte) line::y1#10
 (byte) line::y1#11
 (byte) line::y1#12
+(byte) line::y1#13
 (byte) line::y1#2
 (byte) line::y1#3
 (byte) line::y1#4
@@ -2786,6 +4107,81 @@ INITIAL SSA SYMBOL TABLE
 (byte) line::yd
 (byte) line::yd#0
 (byte) line::yd#1
+(byte) line::yd#10
+(byte) line::yd#11
+(byte) line::yd#2
+(byte) line::yd#3
+(byte) line::yd#4
+(byte) line::yd#5
+(byte) line::yd#6
+(byte) line::yd#7
+(byte) line::yd#8
+(byte) line::yd#9
+(void()) line_xdyd((byte) line_xdyd::x , (byte) line_xdyd::y , (byte) line_xdyd::x1 , (byte) line_xdyd::xd , (byte) line_xdyd::yd)
+(byte~) line_xdyd::$0
+(byte~) line_xdyd::$2
+(byte~) line_xdyd::$3
+(boolean~) line_xdyd::$4
+(boolean~) line_xdyd::$5
+(byte~) line_xdyd::$6
+(byte~) line_xdyd::$7
+(byte~) line_xdyd::$8
+(boolean~) line_xdyd::$9
+(label) line_xdyd::@1
+(label) line_xdyd::@2
+(label) line_xdyd::@3
+(label) line_xdyd::@5
+(label) line_xdyd::@return
+(byte) line_xdyd::e
+(byte) line_xdyd::e#0
+(byte) line_xdyd::e#1
+(byte) line_xdyd::e#2
+(byte) line_xdyd::e#3
+(byte) line_xdyd::e#4
+(byte) line_xdyd::e#5
+(byte) line_xdyd::e#6
+(byte) line_xdyd::x
+(byte) line_xdyd::x#0
+(byte) line_xdyd::x#1
+(byte) line_xdyd::x#2
+(byte) line_xdyd::x#3
+(byte) line_xdyd::x#4
+(byte) line_xdyd::x#5
+(byte) line_xdyd::x#6
+(byte) line_xdyd::x#7
+(byte) line_xdyd::x1
+(byte) line_xdyd::x1#0
+(byte) line_xdyd::x1#1
+(byte) line_xdyd::x1#2
+(byte) line_xdyd::x1#3
+(byte) line_xdyd::x1#4
+(byte) line_xdyd::x1#5
+(byte) line_xdyd::x1#6
+(byte) line_xdyd::xd
+(byte) line_xdyd::xd#0
+(byte) line_xdyd::xd#1
+(byte) line_xdyd::xd#2
+(byte) line_xdyd::xd#3
+(byte) line_xdyd::xd#4
+(byte) line_xdyd::xd#5
+(byte) line_xdyd::xd#6
+(byte) line_xdyd::y
+(byte) line_xdyd::y#0
+(byte) line_xdyd::y#1
+(byte) line_xdyd::y#2
+(byte) line_xdyd::y#3
+(byte) line_xdyd::y#4
+(byte) line_xdyd::y#5
+(byte) line_xdyd::y#6
+(byte) line_xdyd::y#7
+(byte) line_xdyd::yd
+(byte) line_xdyd::yd#0
+(byte) line_xdyd::yd#1
+(byte) line_xdyd::yd#2
+(byte) line_xdyd::yd#3
+(byte) line_xdyd::yd#4
+(byte) line_xdyd::yd#5
+(byte) line_xdyd::yd#6
 (void()) line_xdyi((byte) line_xdyi::x , (byte) line_xdyi::y , (byte) line_xdyi::x1 , (byte) line_xdyi::xd , (byte) line_xdyi::yd)
 (byte~) line_xdyi::$0
 (byte~) line_xdyi::$2
@@ -2817,6 +4213,7 @@ INITIAL SSA SYMBOL TABLE
 (byte) line_xdyi::x#4
 (byte) line_xdyi::x#5
 (byte) line_xdyi::x#6
+(byte) line_xdyi::x#7
 (byte) line_xdyi::x1
 (byte) line_xdyi::x1#0
 (byte) line_xdyi::x1#1
@@ -2824,6 +4221,7 @@ INITIAL SSA SYMBOL TABLE
 (byte) line_xdyi::x1#3
 (byte) line_xdyi::x1#4
 (byte) line_xdyi::x1#5
+(byte) line_xdyi::x1#6
 (byte) line_xdyi::xd
 (byte) line_xdyi::xd#0
 (byte) line_xdyi::xd#1
@@ -2831,6 +4229,7 @@ INITIAL SSA SYMBOL TABLE
 (byte) line_xdyi::xd#3
 (byte) line_xdyi::xd#4
 (byte) line_xdyi::xd#5
+(byte) line_xdyi::xd#6
 (byte) line_xdyi::y
 (byte) line_xdyi::y#0
 (byte) line_xdyi::y#1
@@ -2839,6 +4238,7 @@ INITIAL SSA SYMBOL TABLE
 (byte) line_xdyi::y#4
 (byte) line_xdyi::y#5
 (byte) line_xdyi::y#6
+(byte) line_xdyi::y#7
 (byte) line_xdyi::yd
 (byte) line_xdyi::yd#0
 (byte) line_xdyi::yd#1
@@ -2846,6 +4246,137 @@ INITIAL SSA SYMBOL TABLE
 (byte) line_xdyi::yd#3
 (byte) line_xdyi::yd#4
 (byte) line_xdyi::yd#5
+(byte) line_xdyi::yd#6
+(void()) line_ydxd((byte) line_ydxd::y , (byte) line_ydxd::x , (byte) line_ydxd::y1 , (byte) line_ydxd::yd , (byte) line_ydxd::xd)
+(byte~) line_ydxd::$0
+(byte~) line_ydxd::$2
+(byte~) line_ydxd::$3
+(boolean~) line_ydxd::$4
+(boolean~) line_ydxd::$5
+(byte~) line_ydxd::$6
+(byte~) line_ydxd::$7
+(byte~) line_ydxd::$8
+(boolean~) line_ydxd::$9
+(label) line_ydxd::@1
+(label) line_ydxd::@2
+(label) line_ydxd::@3
+(label) line_ydxd::@5
+(label) line_ydxd::@return
+(byte) line_ydxd::e
+(byte) line_ydxd::e#0
+(byte) line_ydxd::e#1
+(byte) line_ydxd::e#2
+(byte) line_ydxd::e#3
+(byte) line_ydxd::e#4
+(byte) line_ydxd::e#5
+(byte) line_ydxd::e#6
+(byte) line_ydxd::x
+(byte) line_ydxd::x#0
+(byte) line_ydxd::x#1
+(byte) line_ydxd::x#2
+(byte) line_ydxd::x#3
+(byte) line_ydxd::x#4
+(byte) line_ydxd::x#5
+(byte) line_ydxd::x#6
+(byte) line_ydxd::x#7
+(byte) line_ydxd::xd
+(byte) line_ydxd::xd#0
+(byte) line_ydxd::xd#1
+(byte) line_ydxd::xd#2
+(byte) line_ydxd::xd#3
+(byte) line_ydxd::xd#4
+(byte) line_ydxd::xd#5
+(byte) line_ydxd::xd#6
+(byte) line_ydxd::y
+(byte) line_ydxd::y#0
+(byte) line_ydxd::y#1
+(byte) line_ydxd::y#2
+(byte) line_ydxd::y#3
+(byte) line_ydxd::y#4
+(byte) line_ydxd::y#5
+(byte) line_ydxd::y#6
+(byte) line_ydxd::y#7
+(byte) line_ydxd::y1
+(byte) line_ydxd::y1#0
+(byte) line_ydxd::y1#1
+(byte) line_ydxd::y1#2
+(byte) line_ydxd::y1#3
+(byte) line_ydxd::y1#4
+(byte) line_ydxd::y1#5
+(byte) line_ydxd::y1#6
+(byte) line_ydxd::yd
+(byte) line_ydxd::yd#0
+(byte) line_ydxd::yd#1
+(byte) line_ydxd::yd#2
+(byte) line_ydxd::yd#3
+(byte) line_ydxd::yd#4
+(byte) line_ydxd::yd#5
+(byte) line_ydxd::yd#6
+(void()) line_ydxi((byte) line_ydxi::y , (byte) line_ydxi::x , (byte) line_ydxi::y1 , (byte) line_ydxi::yd , (byte) line_ydxi::xd)
+(byte~) line_ydxi::$0
+(byte~) line_ydxi::$2
+(byte~) line_ydxi::$3
+(boolean~) line_ydxi::$4
+(boolean~) line_ydxi::$5
+(byte~) line_ydxi::$6
+(byte~) line_ydxi::$7
+(byte~) line_ydxi::$8
+(boolean~) line_ydxi::$9
+(label) line_ydxi::@1
+(label) line_ydxi::@2
+(label) line_ydxi::@3
+(label) line_ydxi::@5
+(label) line_ydxi::@return
+(byte) line_ydxi::e
+(byte) line_ydxi::e#0
+(byte) line_ydxi::e#1
+(byte) line_ydxi::e#2
+(byte) line_ydxi::e#3
+(byte) line_ydxi::e#4
+(byte) line_ydxi::e#5
+(byte) line_ydxi::e#6
+(byte) line_ydxi::x
+(byte) line_ydxi::x#0
+(byte) line_ydxi::x#1
+(byte) line_ydxi::x#2
+(byte) line_ydxi::x#3
+(byte) line_ydxi::x#4
+(byte) line_ydxi::x#5
+(byte) line_ydxi::x#6
+(byte) line_ydxi::x#7
+(byte) line_ydxi::xd
+(byte) line_ydxi::xd#0
+(byte) line_ydxi::xd#1
+(byte) line_ydxi::xd#2
+(byte) line_ydxi::xd#3
+(byte) line_ydxi::xd#4
+(byte) line_ydxi::xd#5
+(byte) line_ydxi::xd#6
+(byte) line_ydxi::y
+(byte) line_ydxi::y#0
+(byte) line_ydxi::y#1
+(byte) line_ydxi::y#2
+(byte) line_ydxi::y#3
+(byte) line_ydxi::y#4
+(byte) line_ydxi::y#5
+(byte) line_ydxi::y#6
+(byte) line_ydxi::y#7
+(byte) line_ydxi::y1
+(byte) line_ydxi::y1#0
+(byte) line_ydxi::y1#1
+(byte) line_ydxi::y1#2
+(byte) line_ydxi::y1#3
+(byte) line_ydxi::y1#4
+(byte) line_ydxi::y1#5
+(byte) line_ydxi::y1#6
+(byte) line_ydxi::yd
+(byte) line_ydxi::yd#0
+(byte) line_ydxi::yd#1
+(byte) line_ydxi::yd#2
+(byte) line_ydxi::yd#3
+(byte) line_ydxi::yd#4
+(byte) line_ydxi::yd#5
+(byte) line_ydxi::yd#6
 (void()) lines()
 (byte~) lines::$0
 (byte~) lines::$1
@@ -2930,22 +4461,12 @@ INITIAL SSA SYMBOL TABLE
 (byte) plot::x#2
 (byte) plot::x#3
 (byte) plot::x#4
-(byte) plot::x#5
-(byte) plot::x#6
-(byte) plot::x#7
-(byte) plot::x#8
-(byte) plot::x#9
 (byte) plot::y
 (byte) plot::y#0
 (byte) plot::y#1
 (byte) plot::y#2
 (byte) plot::y#3
 (byte) plot::y#4
-(byte) plot::y#5
-(byte) plot::y#6
-(byte) plot::y#7
-(byte) plot::y#8
-(byte) plot::y#9
 (byte[]) plot_bit
 (byte[]) plot_bit#0
 (byte[]) plot_bit#1
@@ -2974,7 +4495,24 @@ INITIAL SSA SYMBOL TABLE
 (byte[]) plot_bit#30
 (byte[]) plot_bit#31
 (byte[]) plot_bit#32
+(byte[]) plot_bit#33
+(byte[]) plot_bit#34
+(byte[]) plot_bit#35
+(byte[]) plot_bit#36
+(byte[]) plot_bit#37
+(byte[]) plot_bit#38
+(byte[]) plot_bit#39
 (byte[]) plot_bit#4
+(byte[]) plot_bit#40
+(byte[]) plot_bit#41
+(byte[]) plot_bit#42
+(byte[]) plot_bit#43
+(byte[]) plot_bit#44
+(byte[]) plot_bit#45
+(byte[]) plot_bit#46
+(byte[]) plot_bit#47
+(byte[]) plot_bit#48
+(byte[]) plot_bit#49
 (byte[]) plot_bit#5
 (byte[]) plot_bit#6
 (byte[]) plot_bit#7
@@ -3008,7 +4546,24 @@ INITIAL SSA SYMBOL TABLE
 (byte[]) plot_xhi#30
 (byte[]) plot_xhi#31
 (byte[]) plot_xhi#32
+(byte[]) plot_xhi#33
+(byte[]) plot_xhi#34
+(byte[]) plot_xhi#35
+(byte[]) plot_xhi#36
+(byte[]) plot_xhi#37
+(byte[]) plot_xhi#38
+(byte[]) plot_xhi#39
 (byte[]) plot_xhi#4
+(byte[]) plot_xhi#40
+(byte[]) plot_xhi#41
+(byte[]) plot_xhi#42
+(byte[]) plot_xhi#43
+(byte[]) plot_xhi#44
+(byte[]) plot_xhi#45
+(byte[]) plot_xhi#46
+(byte[]) plot_xhi#47
+(byte[]) plot_xhi#48
+(byte[]) plot_xhi#49
 (byte[]) plot_xhi#5
 (byte[]) plot_xhi#6
 (byte[]) plot_xhi#7
@@ -3042,7 +4597,24 @@ INITIAL SSA SYMBOL TABLE
 (byte[]) plot_xlo#30
 (byte[]) plot_xlo#31
 (byte[]) plot_xlo#32
+(byte[]) plot_xlo#33
+(byte[]) plot_xlo#34
+(byte[]) plot_xlo#35
+(byte[]) plot_xlo#36
+(byte[]) plot_xlo#37
+(byte[]) plot_xlo#38
+(byte[]) plot_xlo#39
 (byte[]) plot_xlo#4
+(byte[]) plot_xlo#40
+(byte[]) plot_xlo#41
+(byte[]) plot_xlo#42
+(byte[]) plot_xlo#43
+(byte[]) plot_xlo#44
+(byte[]) plot_xlo#45
+(byte[]) plot_xlo#46
+(byte[]) plot_xlo#47
+(byte[]) plot_xlo#48
+(byte[]) plot_xlo#49
 (byte[]) plot_xlo#5
 (byte[]) plot_xlo#6
 (byte[]) plot_xlo#7
@@ -3080,8 +4652,25 @@ INITIAL SSA SYMBOL TABLE
 (byte[]) plot_yhi#34
 (byte[]) plot_yhi#35
 (byte[]) plot_yhi#36
+(byte[]) plot_yhi#37
+(byte[]) plot_yhi#38
+(byte[]) plot_yhi#39
 (byte[]) plot_yhi#4
+(byte[]) plot_yhi#40
+(byte[]) plot_yhi#41
+(byte[]) plot_yhi#42
+(byte[]) plot_yhi#43
+(byte[]) plot_yhi#44
+(byte[]) plot_yhi#45
+(byte[]) plot_yhi#46
+(byte[]) plot_yhi#47
+(byte[]) plot_yhi#48
+(byte[]) plot_yhi#49
 (byte[]) plot_yhi#5
+(byte[]) plot_yhi#50
+(byte[]) plot_yhi#51
+(byte[]) plot_yhi#52
+(byte[]) plot_yhi#53
 (byte[]) plot_yhi#6
 (byte[]) plot_yhi#7
 (byte[]) plot_yhi#8
@@ -3118,19 +4707,39 @@ INITIAL SSA SYMBOL TABLE
 (byte[]) plot_ylo#34
 (byte[]) plot_ylo#35
 (byte[]) plot_ylo#36
+(byte[]) plot_ylo#37
+(byte[]) plot_ylo#38
+(byte[]) plot_ylo#39
 (byte[]) plot_ylo#4
+(byte[]) plot_ylo#40
+(byte[]) plot_ylo#41
+(byte[]) plot_ylo#42
+(byte[]) plot_ylo#43
+(byte[]) plot_ylo#44
+(byte[]) plot_ylo#45
+(byte[]) plot_ylo#46
+(byte[]) plot_ylo#47
+(byte[]) plot_ylo#48
+(byte[]) plot_ylo#49
 (byte[]) plot_ylo#5
+(byte[]) plot_ylo#50
+(byte[]) plot_ylo#51
+(byte[]) plot_ylo#52
+(byte[]) plot_ylo#53
 (byte[]) plot_ylo#6
 (byte[]) plot_ylo#7
 (byte[]) plot_ylo#8
 (byte[]) plot_ylo#9
 
-Culled Empty Block (label) line::@18
-Culled Empty Block (label) line::@20
-Culled Empty Block (label) line::@21
-Culled Empty Block (label) line::@23
-Culled Empty Block (label) line::@25
-Culled Empty Block (label) @8
+Culled Empty Block (label) line::@29
+Culled Empty Block (label) line::@30
+Culled Empty Block (label) line::@31
+Culled Empty Block (label) line::@32
+Culled Empty Block (label) line::@33
+Culled Empty Block (label) line::@34
+Culled Empty Block (label) line::@35
+Culled Empty Block (label) line::@36
+Culled Empty Block (label) @11
 Succesful SSA optimization Pass2CullEmptyBlocks
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
@@ -3158,25 +4767,25 @@ CONTROL FLOW GRAPH
   (byte[]) lines_x#0 ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y#0 ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt#0 ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
-  (byte[]) plot_yhi#32 ← phi( @7/(byte[]) plot_yhi#34 )
-  (byte[]) plot_ylo#32 ← phi( @7/(byte[]) plot_ylo#34 )
-  (byte) lines_cnt#8 ← phi( @7/(byte) lines_cnt#9 )
-  (byte[]) lines_y#8 ← phi( @7/(byte[]) lines_y#9 )
-  (byte[]) lines_x#8 ← phi( @7/(byte[]) lines_x#9 )
-  (byte*) SCREEN#5 ← phi( @7/(byte*) SCREEN#6 )
-  (byte[]) plot_bit#21 ← phi( @7/(byte[]) plot_bit#26 )
-  (byte[]) plot_xhi#21 ← phi( @7/(byte[]) plot_xhi#26 )
-  (byte[]) plot_xlo#21 ← phi( @7/(byte[]) plot_xlo#26 )
-  (byte*) BITMAP#6 ← phi( @7/(byte*) BITMAP#7 )
-  (byte*) D018#1 ← phi( @7/(byte*) D018#2 )
-  (byte*) D011#1 ← phi( @7/(byte*) D011#2 )
-  (byte) RSEL#1 ← phi( @7/(byte) RSEL#2 )
-  (byte) DEN#1 ← phi( @7/(byte) DEN#2 )
-  (byte) BMM#1 ← phi( @7/(byte) BMM#2 )
-  (byte*) FGCOL#1 ← phi( @7/(byte*) FGCOL#2 )
-  (byte*) BGCOL#1 ← phi( @7/(byte*) BGCOL#2 )
+  to:@10
+main: scope:[main]  from @10
+  (byte[]) plot_yhi#45 ← phi( @10/(byte[]) plot_yhi#47 )
+  (byte[]) plot_ylo#45 ← phi( @10/(byte[]) plot_ylo#47 )
+  (byte) lines_cnt#8 ← phi( @10/(byte) lines_cnt#9 )
+  (byte[]) lines_y#8 ← phi( @10/(byte[]) lines_y#9 )
+  (byte[]) lines_x#8 ← phi( @10/(byte[]) lines_x#9 )
+  (byte*) SCREEN#5 ← phi( @10/(byte*) SCREEN#6 )
+  (byte[]) plot_bit#19 ← phi( @10/(byte[]) plot_bit#36 )
+  (byte[]) plot_xhi#19 ← phi( @10/(byte[]) plot_xhi#36 )
+  (byte[]) plot_xlo#19 ← phi( @10/(byte[]) plot_xlo#36 )
+  (byte*) BITMAP#6 ← phi( @10/(byte*) BITMAP#7 )
+  (byte*) D018#1 ← phi( @10/(byte*) D018#2 )
+  (byte*) D011#1 ← phi( @10/(byte*) D011#2 )
+  (byte) RSEL#1 ← phi( @10/(byte) RSEL#2 )
+  (byte) DEN#1 ← phi( @10/(byte) DEN#2 )
+  (byte) BMM#1 ← phi( @10/(byte) BMM#2 )
+  (byte*) FGCOL#1 ← phi( @10/(byte*) FGCOL#2 )
+  (byte*) BGCOL#1 ← phi( @10/(byte*) BGCOL#2 )
   *((byte*) BGCOL#1) ← (byte) 0
   *((byte*) FGCOL#1) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM#1 | (byte) DEN#1
@@ -3187,44 +4796,44 @@ main: scope:[main]  from @7
   call init_screen param-assignment
   to:main::@3
 main::@3: scope:[main]  from main
-  (byte[]) plot_yhi#31 ← phi( main/(byte[]) plot_yhi#32 )
-  (byte[]) plot_ylo#31 ← phi( main/(byte[]) plot_ylo#32 )
+  (byte[]) plot_yhi#44 ← phi( main/(byte[]) plot_yhi#45 )
+  (byte[]) plot_ylo#44 ← phi( main/(byte[]) plot_ylo#45 )
   (byte) lines_cnt#7 ← phi( main/(byte) lines_cnt#8 )
   (byte[]) lines_y#7 ← phi( main/(byte[]) lines_y#8 )
   (byte[]) lines_x#7 ← phi( main/(byte[]) lines_x#8 )
-  (byte[]) plot_bit#19 ← phi( main/(byte[]) plot_bit#21 )
-  (byte[]) plot_xhi#19 ← phi( main/(byte[]) plot_xhi#21 )
+  (byte[]) plot_bit#17 ← phi( main/(byte[]) plot_bit#19 )
+  (byte[]) plot_xhi#17 ← phi( main/(byte[]) plot_xhi#19 )
   (byte*) BITMAP#8 ← phi( main/(byte*) BITMAP#6 )
-  (byte[]) plot_xlo#19 ← phi( main/(byte[]) plot_xlo#21 )
+  (byte[]) plot_xlo#17 ← phi( main/(byte[]) plot_xlo#19 )
   call init_plot_tables param-assignment
   to:main::@4
 main::@4: scope:[main]  from main::@3
-  (byte[]) plot_bit#31 ← phi( main::@3/(byte[]) plot_bit#19 )
-  (byte[]) plot_ylo#35 ← phi( main::@3/(byte[]) plot_ylo#31 )
-  (byte[]) plot_yhi#35 ← phi( main::@3/(byte[]) plot_yhi#31 )
-  (byte[]) plot_xlo#31 ← phi( main::@3/(byte[]) plot_xlo#19 )
-  (byte[]) plot_xhi#31 ← phi( main::@3/(byte[]) plot_xhi#19 )
+  (byte[]) plot_bit#48 ← phi( main::@3/(byte[]) plot_bit#17 )
+  (byte[]) plot_ylo#52 ← phi( main::@3/(byte[]) plot_ylo#44 )
+  (byte[]) plot_yhi#52 ← phi( main::@3/(byte[]) plot_yhi#44 )
+  (byte[]) plot_xlo#48 ← phi( main::@3/(byte[]) plot_xlo#17 )
+  (byte[]) plot_xhi#48 ← phi( main::@3/(byte[]) plot_xhi#17 )
   (byte) lines_cnt#5 ← phi( main::@3/(byte) lines_cnt#7 )
   (byte[]) lines_y#5 ← phi( main::@3/(byte[]) lines_y#7 )
   (byte[]) lines_x#5 ← phi( main::@3/(byte[]) lines_x#7 )
   to:main::@1
 main::@1: scope:[main]  from main::@4 main::@5
-  (byte[]) plot_bit#30 ← phi( main::@4/(byte[]) plot_bit#31 main::@5/(byte[]) plot_bit#32 )
-  (byte[]) plot_ylo#33 ← phi( main::@4/(byte[]) plot_ylo#35 main::@5/(byte[]) plot_ylo#36 )
-  (byte[]) plot_yhi#33 ← phi( main::@4/(byte[]) plot_yhi#35 main::@5/(byte[]) plot_yhi#36 )
-  (byte[]) plot_xlo#30 ← phi( main::@4/(byte[]) plot_xlo#31 main::@5/(byte[]) plot_xlo#32 )
-  (byte[]) plot_xhi#30 ← phi( main::@4/(byte[]) plot_xhi#31 main::@5/(byte[]) plot_xhi#32 )
+  (byte[]) plot_bit#47 ← phi( main::@4/(byte[]) plot_bit#48 main::@5/(byte[]) plot_bit#49 )
+  (byte[]) plot_ylo#51 ← phi( main::@4/(byte[]) plot_ylo#52 main::@5/(byte[]) plot_ylo#53 )
+  (byte[]) plot_yhi#51 ← phi( main::@4/(byte[]) plot_yhi#52 main::@5/(byte[]) plot_yhi#53 )
+  (byte[]) plot_xlo#47 ← phi( main::@4/(byte[]) plot_xlo#48 main::@5/(byte[]) plot_xlo#49 )
+  (byte[]) plot_xhi#47 ← phi( main::@4/(byte[]) plot_xhi#48 main::@5/(byte[]) plot_xhi#49 )
   (byte) lines_cnt#4 ← phi( main::@4/(byte) lines_cnt#5 main::@5/(byte) lines_cnt#6 )
   (byte[]) lines_y#4 ← phi( main::@4/(byte[]) lines_y#5 main::@5/(byte[]) lines_y#6 )
   (byte[]) lines_x#4 ← phi( main::@4/(byte[]) lines_x#5 main::@5/(byte[]) lines_x#6 )
   call lines param-assignment
   to:main::@5
 main::@5: scope:[main]  from main::@1
-  (byte[]) plot_bit#32 ← phi( main::@1/(byte[]) plot_bit#30 )
-  (byte[]) plot_ylo#36 ← phi( main::@1/(byte[]) plot_ylo#33 )
-  (byte[]) plot_yhi#36 ← phi( main::@1/(byte[]) plot_yhi#33 )
-  (byte[]) plot_xlo#32 ← phi( main::@1/(byte[]) plot_xlo#30 )
-  (byte[]) plot_xhi#32 ← phi( main::@1/(byte[]) plot_xhi#30 )
+  (byte[]) plot_bit#49 ← phi( main::@1/(byte[]) plot_bit#47 )
+  (byte[]) plot_ylo#53 ← phi( main::@1/(byte[]) plot_ylo#51 )
+  (byte[]) plot_yhi#53 ← phi( main::@1/(byte[]) plot_yhi#51 )
+  (byte[]) plot_xlo#49 ← phi( main::@1/(byte[]) plot_xlo#47 )
+  (byte[]) plot_xhi#49 ← phi( main::@1/(byte[]) plot_xhi#47 )
   (byte) lines_cnt#6 ← phi( main::@1/(byte) lines_cnt#4 )
   (byte[]) lines_y#6 ← phi( main::@1/(byte[]) lines_y#4 )
   (byte[]) lines_x#6 ← phi( main::@1/(byte[]) lines_x#4 )
@@ -3234,22 +4843,22 @@ main::@return: scope:[main]  from main::@5
   return 
   to:@return
 lines: scope:[lines]  from main::@1
-  (byte[]) plot_bit#28 ← phi( main::@1/(byte[]) plot_bit#30 )
-  (byte[]) plot_ylo#29 ← phi( main::@1/(byte[]) plot_ylo#33 )
-  (byte[]) plot_yhi#29 ← phi( main::@1/(byte[]) plot_yhi#33 )
-  (byte[]) plot_xlo#28 ← phi( main::@1/(byte[]) plot_xlo#30 )
-  (byte[]) plot_xhi#28 ← phi( main::@1/(byte[]) plot_xhi#30 )
+  (byte[]) plot_bit#45 ← phi( main::@1/(byte[]) plot_bit#47 )
+  (byte[]) plot_ylo#49 ← phi( main::@1/(byte[]) plot_ylo#51 )
+  (byte[]) plot_yhi#49 ← phi( main::@1/(byte[]) plot_yhi#51 )
+  (byte[]) plot_xlo#45 ← phi( main::@1/(byte[]) plot_xlo#47 )
+  (byte[]) plot_xhi#45 ← phi( main::@1/(byte[]) plot_xhi#47 )
   (byte) lines_cnt#3 ← phi( main::@1/(byte) lines_cnt#4 )
   (byte[]) lines_y#2 ← phi( main::@1/(byte[]) lines_y#4 )
   (byte[]) lines_x#2 ← phi( main::@1/(byte[]) lines_x#4 )
   (byte) lines::l#0 ← (byte) 0
   to:lines::@1
 lines::@1: scope:[lines]  from lines lines::@3
-  (byte[]) plot_bit#27 ← phi( lines/(byte[]) plot_bit#28 lines::@3/(byte[]) plot_bit#29 )
-  (byte[]) plot_ylo#27 ← phi( lines/(byte[]) plot_ylo#29 lines::@3/(byte[]) plot_ylo#30 )
-  (byte[]) plot_yhi#27 ← phi( lines/(byte[]) plot_yhi#29 lines::@3/(byte[]) plot_yhi#30 )
-  (byte[]) plot_xlo#27 ← phi( lines/(byte[]) plot_xlo#28 lines::@3/(byte[]) plot_xlo#29 )
-  (byte[]) plot_xhi#27 ← phi( lines/(byte[]) plot_xhi#28 lines::@3/(byte[]) plot_xhi#29 )
+  (byte[]) plot_bit#44 ← phi( lines/(byte[]) plot_bit#45 lines::@3/(byte[]) plot_bit#46 )
+  (byte[]) plot_ylo#48 ← phi( lines/(byte[]) plot_ylo#49 lines::@3/(byte[]) plot_ylo#50 )
+  (byte[]) plot_yhi#48 ← phi( lines/(byte[]) plot_yhi#49 lines::@3/(byte[]) plot_yhi#50 )
+  (byte[]) plot_xlo#44 ← phi( lines/(byte[]) plot_xlo#45 lines::@3/(byte[]) plot_xlo#46 )
+  (byte[]) plot_xhi#44 ← phi( lines/(byte[]) plot_xhi#45 lines::@3/(byte[]) plot_xhi#46 )
   (byte) lines_cnt#2 ← phi( lines/(byte) lines_cnt#3 lines::@3/(byte) lines_cnt#1 )
   (byte[]) lines_y#1 ← phi( lines/(byte[]) lines_y#2 lines::@3/(byte[]) lines_y#3 )
   (byte) lines::l#2 ← phi( lines/(byte) lines::l#0 lines::@3/(byte) lines::l#1 )
@@ -3267,11 +4876,11 @@ lines::@1: scope:[lines]  from lines lines::@3
   call line param-assignment
   to:lines::@3
 lines::@3: scope:[lines]  from lines::@1
-  (byte[]) plot_bit#29 ← phi( lines::@1/(byte[]) plot_bit#27 )
-  (byte[]) plot_ylo#30 ← phi( lines::@1/(byte[]) plot_ylo#27 )
-  (byte[]) plot_yhi#30 ← phi( lines::@1/(byte[]) plot_yhi#27 )
-  (byte[]) plot_xlo#29 ← phi( lines::@1/(byte[]) plot_xlo#27 )
-  (byte[]) plot_xhi#29 ← phi( lines::@1/(byte[]) plot_xhi#27 )
+  (byte[]) plot_bit#46 ← phi( lines::@1/(byte[]) plot_bit#44 )
+  (byte[]) plot_ylo#50 ← phi( lines::@1/(byte[]) plot_ylo#48 )
+  (byte[]) plot_yhi#50 ← phi( lines::@1/(byte[]) plot_yhi#48 )
+  (byte[]) plot_xlo#46 ← phi( lines::@1/(byte[]) plot_xlo#44 )
+  (byte[]) plot_xhi#46 ← phi( lines::@1/(byte[]) plot_xhi#44 )
   (byte[]) lines_y#3 ← phi( lines::@1/(byte[]) lines_y#1 )
   (byte[]) lines_x#3 ← phi( lines::@1/(byte[]) lines_x#1 )
   (byte) lines_cnt#1 ← phi( lines::@1/(byte) lines_cnt#2 )
@@ -3284,43 +4893,43 @@ lines::@return: scope:[lines]  from lines::@3
   return 
   to:@return
 line: scope:[line]  from lines::@1
-  (byte[]) plot_bit#22 ← phi( lines::@1/(byte[]) plot_bit#27 )
-  (byte[]) plot_ylo#21 ← phi( lines::@1/(byte[]) plot_ylo#27 )
-  (byte[]) plot_yhi#21 ← phi( lines::@1/(byte[]) plot_yhi#27 )
-  (byte[]) plot_xlo#22 ← phi( lines::@1/(byte[]) plot_xlo#27 )
-  (byte[]) plot_xhi#22 ← phi( lines::@1/(byte[]) plot_xhi#27 )
-  (byte) line::y1#8 ← phi( lines::@1/(byte) line::y1#0 )
-  (byte) line::y0#9 ← phi( lines::@1/(byte) line::y0#0 )
+  (byte[]) plot_bit#43 ← phi( lines::@1/(byte[]) plot_bit#44 )
+  (byte[]) plot_ylo#46 ← phi( lines::@1/(byte[]) plot_ylo#48 )
+  (byte[]) plot_yhi#46 ← phi( lines::@1/(byte[]) plot_yhi#48 )
+  (byte[]) plot_xlo#43 ← phi( lines::@1/(byte[]) plot_xlo#44 )
+  (byte[]) plot_xhi#43 ← phi( lines::@1/(byte[]) plot_xhi#44 )
+  (byte) line::y1#13 ← phi( lines::@1/(byte) line::y1#0 )
+  (byte) line::y0#13 ← phi( lines::@1/(byte) line::y0#0 )
   (byte) line::x1#1 ← phi( lines::@1/(byte) line::x1#0 )
   (byte) line::x0#1 ← phi( lines::@1/(byte) line::x0#0 )
   (boolean~) line::$0 ← (byte) line::x0#1 < (byte) line::x1#1
   (boolean~) line::$1 ← ! (boolean~) line::$0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte[]) plot_bit#16 ← phi( line/(byte[]) plot_bit#22 )
-  (byte[]) plot_ylo#16 ← phi( line/(byte[]) plot_ylo#21 )
-  (byte[]) plot_yhi#16 ← phi( line/(byte[]) plot_yhi#21 )
-  (byte[]) plot_xlo#16 ← phi( line/(byte[]) plot_xlo#22 )
-  (byte[]) plot_xhi#16 ← phi( line/(byte[]) plot_xhi#22 )
-  (byte) line::y1#1 ← phi( line/(byte) line::y1#8 )
-  (byte) line::y0#1 ← phi( line/(byte) line::y0#9 )
-  (byte) line::x0#2 ← phi( line/(byte) line::x0#1 )
-  (byte) line::x1#2 ← phi( line/(byte) line::x1#1 )
-  (byte~) line::$13 ← (byte) line::x1#2 - (byte) line::x0#2
-  (byte) line::xd#0 ← (byte~) line::$13
-  (boolean~) line::$14 ← (byte) line::y0#1 < (byte) line::y1#1
-  (boolean~) line::$15 ← ! (boolean~) line::$14
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
-  (byte[]) plot_bit#14 ← phi( line/(byte[]) plot_bit#22 )
-  (byte[]) plot_ylo#14 ← phi( line/(byte[]) plot_ylo#21 )
-  (byte[]) plot_yhi#14 ← phi( line/(byte[]) plot_yhi#21 )
-  (byte[]) plot_xlo#14 ← phi( line/(byte[]) plot_xlo#22 )
-  (byte[]) plot_xhi#14 ← phi( line/(byte[]) plot_xhi#22 )
-  (byte) line::y1#2 ← phi( line/(byte) line::y1#8 )
-  (byte) line::y0#2 ← phi( line/(byte) line::y0#9 )
+line::@1: scope:[line]  from line
+  (byte[]) plot_bit#42 ← phi( line/(byte[]) plot_bit#43 )
+  (byte[]) plot_ylo#43 ← phi( line/(byte[]) plot_ylo#46 )
+  (byte[]) plot_yhi#43 ← phi( line/(byte[]) plot_yhi#46 )
+  (byte[]) plot_xlo#42 ← phi( line/(byte[]) plot_xlo#43 )
+  (byte[]) plot_xhi#42 ← phi( line/(byte[]) plot_xhi#43 )
+  (byte) line::y1#1 ← phi( line/(byte) line::y1#13 )
+  (byte) line::y0#1 ← phi( line/(byte) line::y0#13 )
+  (byte) line::x1#2 ← phi( line/(byte) line::x1#1 )
+  (byte) line::x0#2 ← phi( line/(byte) line::x0#1 )
+  (byte~) line::$15 ← (byte) line::x0#2 - (byte) line::x1#2
+  (byte) line::xd#0 ← (byte~) line::$15
+  (boolean~) line::$16 ← (byte) line::y0#1 < (byte) line::y1#1
+  (boolean~) line::$17 ← ! (boolean~) line::$16
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
+  (byte[]) plot_bit#41 ← phi( line/(byte[]) plot_bit#43 )
+  (byte[]) plot_ylo#42 ← phi( line/(byte[]) plot_ylo#46 )
+  (byte[]) plot_yhi#42 ← phi( line/(byte[]) plot_yhi#46 )
+  (byte[]) plot_xlo#41 ← phi( line/(byte[]) plot_xlo#43 )
+  (byte[]) plot_xhi#41 ← phi( line/(byte[]) plot_xhi#43 )
+  (byte) line::y1#2 ← phi( line/(byte) line::y1#13 )
+  (byte) line::y0#2 ← phi( line/(byte) line::y0#13 )
   (byte) line::x0#3 ← phi( line/(byte) line::x0#1 )
   (byte) line::x1#3 ← phi( line/(byte) line::x1#1 )
   (byte~) line::$2 ← (byte) line::x1#3 - (byte) line::x0#3
@@ -3328,257 +4937,588 @@ line::@9: scope:[line]  from line
   (boolean~) line::$3 ← (byte) line::y0#2 < (byte) line::y1#2
   (boolean~) line::$4 ← ! (boolean~) line::$3
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte[]) plot_bit#6 ← phi( line::@9/(byte[]) plot_bit#14 )
-  (byte[]) plot_ylo#6 ← phi( line::@9/(byte[]) plot_ylo#14 )
-  (byte[]) plot_yhi#6 ← phi( line::@9/(byte[]) plot_yhi#14 )
-  (byte[]) plot_xlo#6 ← phi( line::@9/(byte[]) plot_xlo#14 )
-  (byte[]) plot_xhi#6 ← phi( line::@9/(byte[]) plot_xhi#14 )
-  (byte) line::y1#9 ← phi( line::@9/(byte) line::y1#2 )
-  (byte) line::x1#9 ← phi( line::@9/(byte) line::x1#3 )
-  (byte) line::y0#3 ← phi( line::@9/(byte) line::y0#2 )
-  (byte) line::x0#4 ← phi( line::@9/(byte) line::x0#3 )
-  (byte) plot::x#0 ← (byte) line::x0#4
-  (byte) plot::y#0 ← (byte) line::y0#3
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte[]) plot_bit#4 ← phi( line::@2/(byte[]) plot_bit#6 )
-  (byte[]) plot_ylo#4 ← phi( line::@2/(byte[]) plot_ylo#6 )
-  (byte[]) plot_yhi#4 ← phi( line::@2/(byte[]) plot_yhi#6 )
-  (byte[]) plot_xlo#4 ← phi( line::@2/(byte[]) plot_xlo#6 )
-  (byte[]) plot_xhi#4 ← phi( line::@2/(byte[]) plot_xhi#6 )
-  (byte) line::y1#3 ← phi( line::@2/(byte) line::y1#9 )
-  (byte) line::x1#4 ← phi( line::@2/(byte) line::x1#9 )
-  (byte) plot::x#1 ← (byte) line::x1#4
-  (byte) plot::y#1 ← (byte) line::y1#3
-  call plot param-assignment
-  to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte[]) plot_bit#15 ← phi( line::@9/(byte[]) plot_bit#14 )
-  (byte[]) plot_ylo#15 ← phi( line::@9/(byte[]) plot_ylo#14 )
-  (byte[]) plot_yhi#15 ← phi( line::@9/(byte[]) plot_yhi#14 )
-  (byte[]) plot_xlo#15 ← phi( line::@9/(byte[]) plot_xlo#14 )
-  (byte[]) plot_xhi#15 ← phi( line::@9/(byte[]) plot_xhi#14 )
-  (byte) line::x1#11 ← phi( line::@9/(byte) line::x1#3 )
-  (byte) line::x0#9 ← phi( line::@9/(byte) line::x0#3 )
-  (byte) line::xd#2 ← phi( line::@9/(byte) line::xd#1 )
-  (byte) line::y0#4 ← phi( line::@9/(byte) line::y0#2 )
-  (byte) line::y1#4 ← phi( line::@9/(byte) line::y1#2 )
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte[]) plot_bit#38 ← phi( line::@15/(byte[]) plot_bit#41 )
+  (byte[]) plot_ylo#38 ← phi( line::@15/(byte[]) plot_ylo#42 )
+  (byte[]) plot_yhi#38 ← phi( line::@15/(byte[]) plot_yhi#42 )
+  (byte[]) plot_xlo#38 ← phi( line::@15/(byte[]) plot_xlo#41 )
+  (byte[]) plot_xhi#38 ← phi( line::@15/(byte[]) plot_xhi#41 )
+  (byte) line::x0#11 ← phi( line::@15/(byte) line::x0#3 )
+  (byte) line::x1#11 ← phi( line::@15/(byte) line::x1#3 )
+  (byte) line::xd#2 ← phi( line::@15/(byte) line::xd#1 )
+  (byte) line::y1#3 ← phi( line::@15/(byte) line::y1#2 )
+  (byte) line::y0#3 ← phi( line::@15/(byte) line::y0#2 )
+  (byte~) line::$10 ← (byte) line::y0#3 - (byte) line::y1#3
+  (byte) line::yd#0 ← (byte~) line::$10
+  (boolean~) line::$11 ← (byte) line::yd#0 < (byte) line::xd#2
+  (boolean~) line::$12 ← ! (boolean~) line::$11
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte[]) plot_bit#37 ← phi( line::@15/(byte[]) plot_bit#41 )
+  (byte[]) plot_ylo#37 ← phi( line::@15/(byte[]) plot_ylo#42 )
+  (byte[]) plot_yhi#37 ← phi( line::@15/(byte[]) plot_yhi#42 )
+  (byte[]) plot_xlo#37 ← phi( line::@15/(byte[]) plot_xlo#41 )
+  (byte[]) plot_xhi#37 ← phi( line::@15/(byte[]) plot_xhi#41 )
+  (byte) line::x1#10 ← phi( line::@15/(byte) line::x1#3 )
+  (byte) line::x0#10 ← phi( line::@15/(byte) line::x0#3 )
+  (byte) line::xd#3 ← phi( line::@15/(byte) line::xd#1 )
+  (byte) line::y0#4 ← phi( line::@15/(byte) line::y0#2 )
+  (byte) line::y1#4 ← phi( line::@15/(byte) line::y1#2 )
   (byte~) line::$5 ← (byte) line::y1#4 - (byte) line::y0#4
-  (byte) line::yd#0 ← (byte~) line::$5
-  (boolean~) line::$6 ← (byte) line::yd#0 < (byte) line::xd#2
+  (byte) line::yd#1 ← (byte~) line::$5
+  (boolean~) line::$6 ← (byte) line::yd#1 < (byte) line::xd#3
   (boolean~) line::$7 ← ! (boolean~) line::$6
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte[]) plot_bit#9 ← phi( line::@10/(byte[]) plot_bit#15 )
-  (byte[]) plot_ylo#9 ← phi( line::@10/(byte[]) plot_ylo#15 )
-  (byte[]) plot_yhi#9 ← phi( line::@10/(byte[]) plot_yhi#15 )
-  (byte[]) plot_xlo#9 ← phi( line::@10/(byte[]) plot_xlo#15 )
-  (byte[]) plot_xhi#9 ← phi( line::@10/(byte[]) plot_xhi#15 )
-  (byte) line::y1#10 ← phi( line::@10/(byte) line::y1#4 )
-  (byte) line::x1#10 ← phi( line::@10/(byte) line::x1#11 )
-  (byte) line::y0#5 ← phi( line::@10/(byte) line::y0#4 )
-  (byte) line::x0#5 ← phi( line::@10/(byte) line::x0#9 )
-  (byte) plot::x#2 ← (byte) line::x0#5
-  (byte) plot::y#2 ← (byte) line::y0#5
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte[]) plot_bit#5 ← phi( line::@3/(byte[]) plot_bit#9 )
-  (byte[]) plot_ylo#5 ← phi( line::@3/(byte[]) plot_ylo#9 )
-  (byte[]) plot_yhi#5 ← phi( line::@3/(byte[]) plot_yhi#9 )
-  (byte[]) plot_xlo#5 ← phi( line::@3/(byte[]) plot_xlo#9 )
-  (byte[]) plot_xhi#5 ← phi( line::@3/(byte[]) plot_xhi#9 )
-  (byte) line::y1#5 ← phi( line::@3/(byte) line::y1#10 )
-  (byte) line::x1#5 ← phi( line::@3/(byte) line::x1#10 )
-  (byte) plot::x#3 ← (byte) line::x1#5
-  (byte) plot::y#3 ← (byte) line::y1#5
-  call plot param-assignment
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (byte[]) plot_bit#29 ← phi( line::@16/(byte[]) plot_bit#37 )
+  (byte[]) plot_ylo#28 ← phi( line::@16/(byte[]) plot_ylo#37 )
+  (byte[]) plot_yhi#28 ← phi( line::@16/(byte[]) plot_yhi#37 )
+  (byte[]) plot_xlo#29 ← phi( line::@16/(byte[]) plot_xlo#37 )
+  (byte[]) plot_xhi#29 ← phi( line::@16/(byte[]) plot_xhi#37 )
+  (byte) line::xd#4 ← phi( line::@16/(byte) line::xd#3 )
+  (byte) line::yd#4 ← phi( line::@16/(byte) line::yd#1 )
+  (byte) line::y1#5 ← phi( line::@16/(byte) line::y1#4 )
+  (byte) line::x0#4 ← phi( line::@16/(byte) line::x0#10 )
+  (byte) line::y0#5 ← phi( line::@16/(byte) line::y0#4 )
+  (byte) line_ydxi::y#0 ← (byte) line::y0#5
+  (byte) line_ydxi::x#0 ← (byte) line::x0#4
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#5
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#4
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#4
+  call line_ydxi param-assignment
   to:line::@return
-line::@11: scope:[line]  from line::@10
-  (byte[]) plot_bit#23 ← phi( line::@10/(byte[]) plot_bit#15 )
-  (byte[]) plot_ylo#22 ← phi( line::@10/(byte[]) plot_ylo#15 )
-  (byte[]) plot_yhi#22 ← phi( line::@10/(byte[]) plot_yhi#15 )
-  (byte[]) plot_xlo#23 ← phi( line::@10/(byte[]) plot_xlo#15 )
-  (byte[]) plot_xhi#23 ← phi( line::@10/(byte[]) plot_xhi#15 )
-  (byte) line::yd#1 ← phi( line::@10/(byte) line::yd#0 )
-  (byte) line::xd#3 ← phi( line::@10/(byte) line::xd#2 )
-  (byte) line::x1#6 ← phi( line::@10/(byte) line::x1#11 )
-  (byte) line::y0#6 ← phi( line::@10/(byte) line::y0#4 )
-  (byte) line::x0#6 ← phi( line::@10/(byte) line::x0#9 )
-  (byte) line_xdyi::x#0 ← (byte) line::x0#6
+line::@17: scope:[line]  from line::@16
+  (byte[]) plot_bit#20 ← phi( line::@16/(byte[]) plot_bit#37 )
+  (byte[]) plot_ylo#19 ← phi( line::@16/(byte[]) plot_ylo#37 )
+  (byte[]) plot_yhi#19 ← phi( line::@16/(byte[]) plot_yhi#37 )
+  (byte[]) plot_xlo#20 ← phi( line::@16/(byte[]) plot_xlo#37 )
+  (byte[]) plot_xhi#20 ← phi( line::@16/(byte[]) plot_xhi#37 )
+  (byte) line::yd#5 ← phi( line::@16/(byte) line::yd#1 )
+  (byte) line::xd#5 ← phi( line::@16/(byte) line::xd#3 )
+  (byte) line::x1#4 ← phi( line::@16/(byte) line::x1#10 )
+  (byte) line::y0#6 ← phi( line::@16/(byte) line::y0#4 )
+  (byte) line::x0#5 ← phi( line::@16/(byte) line::x0#10 )
+  (byte) line_xdyi::x#0 ← (byte) line::x0#5
   (byte) line_xdyi::y#0 ← (byte) line::y0#6
-  (byte) line_xdyi::x1#0 ← (byte) line::x1#6
-  (byte) line_xdyi::xd#0 ← (byte) line::xd#3
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
+  (byte) line_xdyi::x1#0 ← (byte) line::x1#4
+  (byte) line_xdyi::xd#0 ← (byte) line::xd#5
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#5
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte[]) plot_bit#10 ← phi( line::@1/(byte[]) plot_bit#16 )
-  (byte[]) plot_ylo#10 ← phi( line::@1/(byte[]) plot_ylo#16 )
-  (byte[]) plot_yhi#10 ← phi( line::@1/(byte[]) plot_yhi#16 )
-  (byte[]) plot_xlo#10 ← phi( line::@1/(byte[]) plot_xlo#16 )
-  (byte[]) plot_xhi#10 ← phi( line::@1/(byte[]) plot_xhi#16 )
-  (byte) line::y1#11 ← phi( line::@1/(byte) line::y1#1 )
-  (byte) line::x1#12 ← phi( line::@1/(byte) line::x1#2 )
-  (byte) line::y0#7 ← phi( line::@1/(byte) line::y0#1 )
-  (byte) line::x0#7 ← phi( line::@1/(byte) line::x0#2 )
-  (byte) plot::x#4 ← (byte) line::x0#7
-  (byte) plot::y#4 ← (byte) line::y0#7
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte[]) plot_bit#7 ← phi( line::@7/(byte[]) plot_bit#10 )
-  (byte[]) plot_ylo#7 ← phi( line::@7/(byte[]) plot_ylo#10 )
-  (byte[]) plot_yhi#7 ← phi( line::@7/(byte[]) plot_yhi#10 )
-  (byte[]) plot_xlo#7 ← phi( line::@7/(byte[]) plot_xlo#10 )
-  (byte[]) plot_xhi#7 ← phi( line::@7/(byte[]) plot_xhi#10 )
-  (byte) line::y1#6 ← phi( line::@7/(byte) line::y1#11 )
-  (byte) line::x1#7 ← phi( line::@7/(byte) line::x1#12 )
-  (byte) plot::x#5 ← (byte) line::x1#7
-  (byte) plot::y#5 ← (byte) line::y1#6
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte[]) plot_bit#33 ← phi( line::@2/(byte[]) plot_bit#38 )
+  (byte[]) plot_ylo#32 ← phi( line::@2/(byte[]) plot_ylo#38 )
+  (byte[]) plot_yhi#32 ← phi( line::@2/(byte[]) plot_yhi#38 )
+  (byte[]) plot_xlo#33 ← phi( line::@2/(byte[]) plot_xlo#38 )
+  (byte[]) plot_xhi#33 ← phi( line::@2/(byte[]) plot_xhi#38 )
+  (byte) line::xd#6 ← phi( line::@2/(byte) line::xd#2 )
+  (byte) line::yd#6 ← phi( line::@2/(byte) line::yd#0 )
+  (byte) line::y0#7 ← phi( line::@2/(byte) line::y0#3 )
+  (byte) line::x1#5 ← phi( line::@2/(byte) line::x1#11 )
+  (byte) line::y1#6 ← phi( line::@2/(byte) line::y1#3 )
+  (byte) line_ydxd::y#0 ← (byte) line::y1#6
+  (byte) line_ydxd::x#0 ← (byte) line::x1#5
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#7
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#6
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#6
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte[]) plot_bit#3 ← phi( line::@1/(byte[]) plot_bit#16 )
-  (byte[]) plot_ylo#3 ← phi( line::@1/(byte[]) plot_ylo#16 )
-  (byte[]) plot_yhi#3 ← phi( line::@1/(byte[]) plot_yhi#16 )
-  (byte[]) plot_xlo#3 ← phi( line::@1/(byte[]) plot_xlo#16 )
-  (byte[]) plot_xhi#3 ← phi( line::@1/(byte[]) plot_xhi#16 )
-  (byte) line::y1#12 ← phi( line::@1/(byte) line::y1#1 )
+line::@20: scope:[line]  from line::@2
+  (byte[]) plot_bit#24 ← phi( line::@2/(byte[]) plot_bit#38 )
+  (byte[]) plot_ylo#23 ← phi( line::@2/(byte[]) plot_ylo#38 )
+  (byte[]) plot_yhi#23 ← phi( line::@2/(byte[]) plot_yhi#38 )
+  (byte[]) plot_xlo#24 ← phi( line::@2/(byte[]) plot_xlo#38 )
+  (byte[]) plot_xhi#24 ← phi( line::@2/(byte[]) plot_xhi#38 )
+  (byte) line::yd#7 ← phi( line::@2/(byte) line::yd#0 )
+  (byte) line::xd#7 ← phi( line::@2/(byte) line::xd#2 )
+  (byte) line::x1#6 ← phi( line::@2/(byte) line::x1#11 )
+  (byte) line::y0#8 ← phi( line::@2/(byte) line::y0#3 )
+  (byte) line::x0#6 ← phi( line::@2/(byte) line::x0#11 )
+  (byte) line_xdyd::x#0 ← (byte) line::x0#6
+  (byte) line_xdyd::y#0 ← (byte) line::y0#8
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#6
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#7
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#7
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte[]) plot_bit#40 ← phi( line::@1/(byte[]) plot_bit#42 )
+  (byte[]) plot_ylo#40 ← phi( line::@1/(byte[]) plot_ylo#43 )
+  (byte[]) plot_yhi#40 ← phi( line::@1/(byte[]) plot_yhi#43 )
+  (byte[]) plot_xlo#40 ← phi( line::@1/(byte[]) plot_xlo#42 )
+  (byte[]) plot_xhi#40 ← phi( line::@1/(byte[]) plot_xhi#42 )
+  (byte) line::x0#13 ← phi( line::@1/(byte) line::x0#2 )
   (byte) line::x1#13 ← phi( line::@1/(byte) line::x1#2 )
-  (byte) line::y0#8 ← phi( line::@1/(byte) line::y0#1 )
-  (byte) line::x0#8 ← phi( line::@1/(byte) line::x0#2 )
-  (byte) plot::x#6 ← (byte) line::x0#8
-  (byte) plot::y#6 ← (byte) line::y0#8
-  call plot param-assignment
+  (byte) line::xd#8 ← phi( line::@1/(byte) line::xd#0 )
+  (byte) line::y1#7 ← phi( line::@1/(byte) line::y1#1 )
+  (byte) line::y0#9 ← phi( line::@1/(byte) line::y0#1 )
+  (byte~) line::$23 ← (byte) line::y0#9 - (byte) line::y1#7
+  (byte) line::yd#2 ← (byte~) line::$23
+  (boolean~) line::$24 ← (byte) line::yd#2 < (byte) line::xd#8
+  (boolean~) line::$25 ← ! (boolean~) line::$24
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte[]) plot_bit#39 ← phi( line::@1/(byte[]) plot_bit#42 )
+  (byte[]) plot_ylo#39 ← phi( line::@1/(byte[]) plot_ylo#43 )
+  (byte[]) plot_yhi#39 ← phi( line::@1/(byte[]) plot_yhi#43 )
+  (byte[]) plot_xlo#39 ← phi( line::@1/(byte[]) plot_xlo#42 )
+  (byte[]) plot_xhi#39 ← phi( line::@1/(byte[]) plot_xhi#42 )
+  (byte) line::x1#12 ← phi( line::@1/(byte) line::x1#2 )
+  (byte) line::x0#12 ← phi( line::@1/(byte) line::x0#2 )
+  (byte) line::xd#9 ← phi( line::@1/(byte) line::xd#0 )
+  (byte) line::y0#10 ← phi( line::@1/(byte) line::y0#1 )
+  (byte) line::y1#8 ← phi( line::@1/(byte) line::y1#1 )
+  (byte~) line::$18 ← (byte) line::y1#8 - (byte) line::y0#10
+  (byte) line::yd#3 ← (byte~) line::$18
+  (boolean~) line::$19 ← (byte) line::yd#3 < (byte) line::xd#9
+  (boolean~) line::$20 ← ! (boolean~) line::$19
+  if((boolean~) line::$20) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte[]) plot_bit#8 ← phi( line::@15/(byte[]) plot_bit#3 )
-  (byte[]) plot_ylo#8 ← phi( line::@15/(byte[]) plot_ylo#3 )
-  (byte[]) plot_yhi#8 ← phi( line::@15/(byte[]) plot_yhi#3 )
-  (byte[]) plot_xlo#8 ← phi( line::@15/(byte[]) plot_xlo#3 )
-  (byte[]) plot_xhi#8 ← phi( line::@15/(byte[]) plot_xhi#3 )
-  (byte) line::y1#7 ← phi( line::@15/(byte) line::y1#12 )
-  (byte) line::x1#8 ← phi( line::@15/(byte) line::x1#13 )
-  (byte) plot::x#7 ← (byte) line::x1#8
-  (byte) plot::y#7 ← (byte) line::y1#7
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte[]) plot_bit#32 ← phi( line::@23/(byte[]) plot_bit#39 )
+  (byte[]) plot_ylo#31 ← phi( line::@23/(byte[]) plot_ylo#39 )
+  (byte[]) plot_yhi#31 ← phi( line::@23/(byte[]) plot_yhi#39 )
+  (byte[]) plot_xlo#32 ← phi( line::@23/(byte[]) plot_xlo#39 )
+  (byte[]) plot_xhi#32 ← phi( line::@23/(byte[]) plot_xhi#39 )
+  (byte) line::xd#10 ← phi( line::@23/(byte) line::xd#9 )
+  (byte) line::yd#8 ← phi( line::@23/(byte) line::yd#3 )
+  (byte) line::y1#9 ← phi( line::@23/(byte) line::y1#8 )
+  (byte) line::x0#7 ← phi( line::@23/(byte) line::x0#12 )
+  (byte) line::y0#11 ← phi( line::@23/(byte) line::y0#10 )
+  (byte) line_ydxd::y#1 ← (byte) line::y0#11
+  (byte) line_ydxd::x#1 ← (byte) line::x0#7
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#9
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#8
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#10
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte[]) plot_bit#25 ← phi( line::@23/(byte[]) plot_bit#39 )
+  (byte[]) plot_ylo#24 ← phi( line::@23/(byte[]) plot_ylo#39 )
+  (byte[]) plot_yhi#24 ← phi( line::@23/(byte[]) plot_yhi#39 )
+  (byte[]) plot_xlo#25 ← phi( line::@23/(byte[]) plot_xlo#39 )
+  (byte[]) plot_xhi#25 ← phi( line::@23/(byte[]) plot_xhi#39 )
+  (byte) line::yd#9 ← phi( line::@23/(byte) line::yd#3 )
+  (byte) line::xd#11 ← phi( line::@23/(byte) line::xd#9 )
+  (byte) line::x0#8 ← phi( line::@23/(byte) line::x0#12 )
+  (byte) line::y1#10 ← phi( line::@23/(byte) line::y1#8 )
+  (byte) line::x1#7 ← phi( line::@23/(byte) line::x1#12 )
+  (byte) line_xdyd::x#1 ← (byte) line::x1#7
+  (byte) line_xdyd::y#1 ← (byte) line::y1#10
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#8
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#11
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#9
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte[]) plot_bit#28 ← phi( line::@9/(byte[]) plot_bit#40 )
+  (byte[]) plot_ylo#27 ← phi( line::@9/(byte[]) plot_ylo#40 )
+  (byte[]) plot_yhi#27 ← phi( line::@9/(byte[]) plot_yhi#40 )
+  (byte[]) plot_xlo#28 ← phi( line::@9/(byte[]) plot_xlo#40 )
+  (byte[]) plot_xhi#28 ← phi( line::@9/(byte[]) plot_xhi#40 )
+  (byte) line::xd#12 ← phi( line::@9/(byte) line::xd#8 )
+  (byte) line::yd#10 ← phi( line::@9/(byte) line::yd#2 )
+  (byte) line::y0#12 ← phi( line::@9/(byte) line::y0#9 )
+  (byte) line::x1#8 ← phi( line::@9/(byte) line::x1#13 )
+  (byte) line::y1#11 ← phi( line::@9/(byte) line::y1#7 )
+  (byte) line_ydxi::y#1 ← (byte) line::y1#11
+  (byte) line_ydxi::x#1 ← (byte) line::x1#8
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#12
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#12
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte[]) plot_bit#21 ← phi( line::@9/(byte[]) plot_bit#40 )
+  (byte[]) plot_ylo#20 ← phi( line::@9/(byte[]) plot_ylo#40 )
+  (byte[]) plot_yhi#20 ← phi( line::@9/(byte[]) plot_yhi#40 )
+  (byte[]) plot_xlo#21 ← phi( line::@9/(byte[]) plot_xlo#40 )
+  (byte[]) plot_xhi#21 ← phi( line::@9/(byte[]) plot_xhi#40 )
+  (byte) line::yd#11 ← phi( line::@9/(byte) line::yd#2 )
+  (byte) line::xd#13 ← phi( line::@9/(byte) line::xd#8 )
+  (byte) line::x0#9 ← phi( line::@9/(byte) line::x0#13 )
+  (byte) line::y1#12 ← phi( line::@9/(byte) line::y1#7 )
+  (byte) line::x1#9 ← phi( line::@9/(byte) line::x1#13 )
+  (byte) line_xdyi::x#1 ← (byte) line::x1#9
+  (byte) line_xdyi::y#1 ← (byte) line::y1#12
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#9
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#13
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#11
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::x1#5 ← phi( line::@11/(byte) line_xdyi::x1#0 )
-  (byte[]) plot_bit#17 ← phi( line::@11/(byte[]) plot_bit#23 )
-  (byte[]) plot_ylo#17 ← phi( line::@11/(byte[]) plot_ylo#22 )
-  (byte[]) plot_yhi#17 ← phi( line::@11/(byte[]) plot_yhi#22 )
-  (byte[]) plot_xlo#17 ← phi( line::@11/(byte[]) plot_xlo#23 )
-  (byte[]) plot_xhi#17 ← phi( line::@11/(byte[]) plot_xhi#23 )
-  (byte) line_xdyi::xd#4 ← phi( line::@11/(byte) line_xdyi::xd#0 )
-  (byte) line_xdyi::y#4 ← phi( line::@11/(byte) line_xdyi::y#0 )
-  (byte) line_xdyi::x#5 ← phi( line::@11/(byte) line_xdyi::x#0 )
-  (byte) line_xdyi::yd#1 ← phi( line::@11/(byte) line_xdyi::yd#0 )
-  (byte~) line_xdyi::$0 ← (byte) line_xdyi::yd#1 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte[]) plot_bit#9 ← phi( line::@17/(byte[]) plot_bit#20 line::@27/(byte[]) plot_bit#21 )
+  (byte[]) plot_ylo#9 ← phi( line::@17/(byte[]) plot_ylo#19 line::@27/(byte[]) plot_ylo#20 )
+  (byte[]) plot_yhi#9 ← phi( line::@17/(byte[]) plot_yhi#19 line::@27/(byte[]) plot_yhi#20 )
+  (byte[]) plot_xlo#9 ← phi( line::@17/(byte[]) plot_xlo#20 line::@27/(byte[]) plot_xlo#21 )
+  (byte[]) plot_xhi#9 ← phi( line::@17/(byte[]) plot_xhi#20 line::@27/(byte[]) plot_xhi#21 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte~) line_xdyi::$0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   (byte) line_xdyi::e#0 ← (byte~) line_xdyi::$0
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
-  (byte) line_xdyi::x1#4 ← phi( line_xdyi/(byte) line_xdyi::x1#5 line_xdyi::@2/(byte) line_xdyi::x1#1 )
-  (byte[]) plot_bit#11 ← phi( line_xdyi/(byte[]) plot_bit#17 line_xdyi::@2/(byte[]) plot_bit#18 )
-  (byte[]) plot_ylo#11 ← phi( line_xdyi/(byte[]) plot_ylo#17 line_xdyi::@2/(byte[]) plot_ylo#18 )
-  (byte[]) plot_yhi#11 ← phi( line_xdyi/(byte[]) plot_yhi#17 line_xdyi::@2/(byte[]) plot_yhi#18 )
-  (byte[]) plot_xlo#11 ← phi( line_xdyi/(byte[]) plot_xlo#17 line_xdyi::@2/(byte[]) plot_xlo#18 )
-  (byte[]) plot_xhi#11 ← phi( line_xdyi/(byte[]) plot_xhi#17 line_xdyi::@2/(byte[]) plot_xhi#18 )
-  (byte) line_xdyi::xd#3 ← phi( line_xdyi/(byte) line_xdyi::xd#4 line_xdyi::@2/(byte) line_xdyi::xd#5 )
-  (byte) line_xdyi::yd#3 ← phi( line_xdyi/(byte) line_xdyi::yd#1 line_xdyi::@2/(byte) line_xdyi::yd#4 )
+  (byte) line_xdyi::x1#5 ← phi( line_xdyi/(byte) line_xdyi::x1#6 line_xdyi::@2/(byte) line_xdyi::x1#2 )
+  (byte[]) plot_bit#4 ← phi( line_xdyi/(byte[]) plot_bit#9 line_xdyi::@2/(byte[]) plot_bit#10 )
+  (byte[]) plot_ylo#4 ← phi( line_xdyi/(byte[]) plot_ylo#9 line_xdyi::@2/(byte[]) plot_ylo#10 )
+  (byte[]) plot_yhi#4 ← phi( line_xdyi/(byte[]) plot_yhi#9 line_xdyi::@2/(byte[]) plot_yhi#10 )
+  (byte[]) plot_xlo#4 ← phi( line_xdyi/(byte[]) plot_xlo#9 line_xdyi::@2/(byte[]) plot_xlo#10 )
+  (byte[]) plot_xhi#4 ← phi( line_xdyi/(byte[]) plot_xhi#9 line_xdyi::@2/(byte[]) plot_xhi#10 )
+  (byte) line_xdyi::xd#4 ← phi( line_xdyi/(byte) line_xdyi::xd#5 line_xdyi::@2/(byte) line_xdyi::xd#6 )
+  (byte) line_xdyi::yd#4 ← phi( line_xdyi/(byte) line_xdyi::yd#2 line_xdyi::@2/(byte) line_xdyi::yd#5 )
   (byte) line_xdyi::e#5 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#4 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#5 line_xdyi::@2/(byte) line_xdyi::x#4 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#5 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte[]) plot_bit#25 ← phi( line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#24 ← phi( line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte[]) plot_yhi#24 ← phi( line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#25 ← phi( line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte[]) plot_xhi#25 ← phi( line_xdyi::@1/(byte[]) plot_xhi#11 )
-  (byte) line_xdyi::y#6 ← phi( line_xdyi::@1/(byte) line_xdyi::y#2 )
-  (byte) line_xdyi::x1#3 ← phi( line_xdyi::@1/(byte) line_xdyi::x1#4 )
-  (byte) line_xdyi::xd#1 ← phi( line_xdyi::@1/(byte) line_xdyi::xd#3 )
-  (byte) line_xdyi::yd#2 ← phi( line_xdyi::@1/(byte) line_xdyi::yd#3 )
+  (byte[]) plot_bit#23 ← phi( line_xdyi::@1/(byte[]) plot_bit#4 )
+  (byte[]) plot_ylo#22 ← phi( line_xdyi::@1/(byte[]) plot_ylo#4 )
+  (byte[]) plot_yhi#22 ← phi( line_xdyi::@1/(byte[]) plot_yhi#4 )
+  (byte[]) plot_xlo#23 ← phi( line_xdyi::@1/(byte[]) plot_xlo#4 )
+  (byte[]) plot_xhi#23 ← phi( line_xdyi::@1/(byte[]) plot_xhi#4 )
+  (byte) line_xdyi::y#7 ← phi( line_xdyi::@1/(byte) line_xdyi::y#3 )
+  (byte) line_xdyi::x1#4 ← phi( line_xdyi::@1/(byte) line_xdyi::x1#5 )
+  (byte) line_xdyi::xd#2 ← phi( line_xdyi::@1/(byte) line_xdyi::xd#4 )
+  (byte) line_xdyi::yd#3 ← phi( line_xdyi::@1/(byte) line_xdyi::yd#4 )
   (byte) line_xdyi::e#3 ← phi( line_xdyi::@1/(byte) line_xdyi::e#5 )
-  (byte) line_xdyi::x#3 ← phi( line_xdyi::@1/(byte) line_xdyi::x#2 )
-  (byte~) line_xdyi::$2 ← (byte) line_xdyi::x#3 + (byte) 1
-  (byte) line_xdyi::x#1 ← (byte~) line_xdyi::$2
-  (byte~) line_xdyi::$3 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  (byte) line_xdyi::x#4 ← phi( line_xdyi::@1/(byte) line_xdyi::x#3 )
+  (byte~) line_xdyi::$2 ← (byte) line_xdyi::x#4 + (byte) 1
+  (byte) line_xdyi::x#2 ← (byte~) line_xdyi::$2
+  (byte~) line_xdyi::$3 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#3
   (byte) line_xdyi::e#1 ← (byte~) line_xdyi::$3
-  (boolean~) line_xdyi::$4 ← (byte) line_xdyi::xd#1 < (byte) line_xdyi::e#1
+  (boolean~) line_xdyi::$4 ← (byte) line_xdyi::xd#2 < (byte) line_xdyi::e#1
   (boolean~) line_xdyi::$5 ← ! (boolean~) line_xdyi::$4
   if((boolean~) line_xdyi::$5) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
-  (byte[]) plot_bit#18 ← phi( line_xdyi::@3/(byte[]) plot_bit#24 line_xdyi::@5/(byte[]) plot_bit#25 )
-  (byte[]) plot_ylo#18 ← phi( line_xdyi::@3/(byte[]) plot_ylo#23 line_xdyi::@5/(byte[]) plot_ylo#24 )
-  (byte[]) plot_yhi#18 ← phi( line_xdyi::@3/(byte[]) plot_yhi#23 line_xdyi::@5/(byte[]) plot_yhi#24 )
-  (byte[]) plot_xlo#18 ← phi( line_xdyi::@3/(byte[]) plot_xlo#24 line_xdyi::@5/(byte[]) plot_xlo#25 )
-  (byte[]) plot_xhi#18 ← phi( line_xdyi::@3/(byte[]) plot_xhi#24 line_xdyi::@5/(byte[]) plot_xhi#25 )
-  (byte) line_xdyi::xd#5 ← phi( line_xdyi::@3/(byte) line_xdyi::xd#2 line_xdyi::@5/(byte) line_xdyi::xd#1 )
-  (byte) line_xdyi::yd#4 ← phi( line_xdyi::@3/(byte) line_xdyi::yd#5 line_xdyi::@5/(byte) line_xdyi::yd#2 )
+  (byte[]) plot_bit#10 ← phi( line_xdyi::@3/(byte[]) plot_bit#22 line_xdyi::@5/(byte[]) plot_bit#23 )
+  (byte[]) plot_ylo#10 ← phi( line_xdyi::@3/(byte[]) plot_ylo#21 line_xdyi::@5/(byte[]) plot_ylo#22 )
+  (byte[]) plot_yhi#10 ← phi( line_xdyi::@3/(byte[]) plot_yhi#21 line_xdyi::@5/(byte[]) plot_yhi#22 )
+  (byte[]) plot_xlo#10 ← phi( line_xdyi::@3/(byte[]) plot_xlo#22 line_xdyi::@5/(byte[]) plot_xlo#23 )
+  (byte[]) plot_xhi#10 ← phi( line_xdyi::@3/(byte[]) plot_xhi#22 line_xdyi::@5/(byte[]) plot_xhi#23 )
+  (byte) line_xdyi::xd#6 ← phi( line_xdyi::@3/(byte) line_xdyi::xd#3 line_xdyi::@5/(byte) line_xdyi::xd#2 )
+  (byte) line_xdyi::yd#5 ← phi( line_xdyi::@3/(byte) line_xdyi::yd#6 line_xdyi::@5/(byte) line_xdyi::yd#3 )
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#6 )
-  (byte) line_xdyi::x#4 ← phi( line_xdyi::@3/(byte) line_xdyi::x#6 line_xdyi::@5/(byte) line_xdyi::x#1 )
-  (byte) line_xdyi::x1#1 ← phi( line_xdyi::@3/(byte) line_xdyi::x1#2 line_xdyi::@5/(byte) line_xdyi::x1#3 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#1 + (byte) 1
-  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#4 < (byte~) line_xdyi::$8
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#7 )
+  (byte) line_xdyi::x#5 ← phi( line_xdyi::@3/(byte) line_xdyi::x#7 line_xdyi::@5/(byte) line_xdyi::x#2 )
+  (byte) line_xdyi::x1#2 ← phi( line_xdyi::@3/(byte) line_xdyi::x1#3 line_xdyi::@5/(byte) line_xdyi::x1#4 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#2 + (byte) 1
+  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#5 < (byte~) line_xdyi::$8
   if((boolean~) line_xdyi::$9) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte[]) plot_bit#24 ← phi( line_xdyi::@5/(byte[]) plot_bit#25 )
-  (byte[]) plot_ylo#23 ← phi( line_xdyi::@5/(byte[]) plot_ylo#24 )
-  (byte[]) plot_yhi#23 ← phi( line_xdyi::@5/(byte[]) plot_yhi#24 )
-  (byte[]) plot_xlo#24 ← phi( line_xdyi::@5/(byte[]) plot_xlo#25 )
-  (byte[]) plot_xhi#24 ← phi( line_xdyi::@5/(byte[]) plot_xhi#25 )
-  (byte) line_xdyi::yd#5 ← phi( line_xdyi::@5/(byte) line_xdyi::yd#2 )
-  (byte) line_xdyi::x#6 ← phi( line_xdyi::@5/(byte) line_xdyi::x#1 )
-  (byte) line_xdyi::x1#2 ← phi( line_xdyi::@5/(byte) line_xdyi::x1#3 )
-  (byte) line_xdyi::xd#2 ← phi( line_xdyi::@5/(byte) line_xdyi::xd#1 )
+  (byte[]) plot_bit#22 ← phi( line_xdyi::@5/(byte[]) plot_bit#23 )
+  (byte[]) plot_ylo#21 ← phi( line_xdyi::@5/(byte[]) plot_ylo#22 )
+  (byte[]) plot_yhi#21 ← phi( line_xdyi::@5/(byte[]) plot_yhi#22 )
+  (byte[]) plot_xlo#22 ← phi( line_xdyi::@5/(byte[]) plot_xlo#23 )
+  (byte[]) plot_xhi#22 ← phi( line_xdyi::@5/(byte[]) plot_xhi#23 )
+  (byte) line_xdyi::yd#6 ← phi( line_xdyi::@5/(byte) line_xdyi::yd#3 )
+  (byte) line_xdyi::x#7 ← phi( line_xdyi::@5/(byte) line_xdyi::x#2 )
+  (byte) line_xdyi::x1#3 ← phi( line_xdyi::@5/(byte) line_xdyi::x1#4 )
+  (byte) line_xdyi::xd#3 ← phi( line_xdyi::@5/(byte) line_xdyi::xd#2 )
   (byte) line_xdyi::e#4 ← phi( line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#3 ← phi( line_xdyi::@5/(byte) line_xdyi::y#6 )
-  (byte~) line_xdyi::$6 ← (byte) line_xdyi::y#3 + (byte) 1
-  (byte) line_xdyi::y#1 ← (byte~) line_xdyi::$6
-  (byte~) line_xdyi::$7 ← (byte) line_xdyi::e#4 - (byte) line_xdyi::xd#2
+  (byte) line_xdyi::y#4 ← phi( line_xdyi::@5/(byte) line_xdyi::y#7 )
+  (byte~) line_xdyi::$6 ← (byte) line_xdyi::y#4 + (byte) 1
+  (byte) line_xdyi::y#2 ← (byte~) line_xdyi::$6
+  (byte~) line_xdyi::$7 ← (byte) line_xdyi::e#4 - (byte) line_xdyi::xd#3
   (byte) line_xdyi::e#2 ← (byte~) line_xdyi::$7
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte[]) plot_bit#1 ← phi( line::@15/(byte[]) plot_bit#3 line::@17/(byte[]) plot_bit#4 line::@19/(byte[]) plot_bit#5 line::@2/(byte[]) plot_bit#6 line::@22/(byte[]) plot_bit#7 line::@24/(byte[]) plot_bit#8 line::@3/(byte[]) plot_bit#9 line::@7/(byte[]) plot_bit#10 line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#1 ← phi( line::@15/(byte[]) plot_ylo#3 line::@17/(byte[]) plot_ylo#4 line::@19/(byte[]) plot_ylo#5 line::@2/(byte[]) plot_ylo#6 line::@22/(byte[]) plot_ylo#7 line::@24/(byte[]) plot_ylo#8 line::@3/(byte[]) plot_ylo#9 line::@7/(byte[]) plot_ylo#10 line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte[]) plot_yhi#1 ← phi( line::@15/(byte[]) plot_yhi#3 line::@17/(byte[]) plot_yhi#4 line::@19/(byte[]) plot_yhi#5 line::@2/(byte[]) plot_yhi#6 line::@22/(byte[]) plot_yhi#7 line::@24/(byte[]) plot_yhi#8 line::@3/(byte[]) plot_yhi#9 line::@7/(byte[]) plot_yhi#10 line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#1 ← phi( line::@15/(byte[]) plot_xlo#3 line::@17/(byte[]) plot_xlo#4 line::@19/(byte[]) plot_xlo#5 line::@2/(byte[]) plot_xlo#6 line::@22/(byte[]) plot_xlo#7 line::@24/(byte[]) plot_xlo#8 line::@3/(byte[]) plot_xlo#9 line::@7/(byte[]) plot_xlo#10 line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte[]) plot_xhi#1 ← phi( line::@15/(byte[]) plot_xhi#3 line::@17/(byte[]) plot_xhi#4 line::@19/(byte[]) plot_xhi#5 line::@2/(byte[]) plot_xhi#6 line::@22/(byte[]) plot_xhi#7 line::@24/(byte[]) plot_xhi#8 line::@3/(byte[]) plot_xhi#9 line::@7/(byte[]) plot_xhi#10 line_xdyi::@1/(byte[]) plot_xhi#11 )
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte[]) plot_bit#11 ← phi( line::@20/(byte[]) plot_bit#24 line::@24/(byte[]) plot_bit#25 )
+  (byte[]) plot_ylo#11 ← phi( line::@20/(byte[]) plot_ylo#23 line::@24/(byte[]) plot_ylo#24 )
+  (byte[]) plot_yhi#11 ← phi( line::@20/(byte[]) plot_yhi#23 line::@24/(byte[]) plot_yhi#24 )
+  (byte[]) plot_xlo#11 ← phi( line::@20/(byte[]) plot_xlo#24 line::@24/(byte[]) plot_xlo#25 )
+  (byte[]) plot_xhi#11 ← phi( line::@20/(byte[]) plot_xhi#24 line::@24/(byte[]) plot_xhi#25 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte~) line_xdyd::$0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  (byte) line_xdyd::e#0 ← (byte~) line_xdyd::$0
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::x1#5 ← phi( line_xdyd/(byte) line_xdyd::x1#6 line_xdyd::@2/(byte) line_xdyd::x1#2 )
+  (byte[]) plot_bit#3 ← phi( line_xdyd/(byte[]) plot_bit#11 line_xdyd::@2/(byte[]) plot_bit#12 )
+  (byte[]) plot_ylo#3 ← phi( line_xdyd/(byte[]) plot_ylo#11 line_xdyd::@2/(byte[]) plot_ylo#12 )
+  (byte[]) plot_yhi#3 ← phi( line_xdyd/(byte[]) plot_yhi#11 line_xdyd::@2/(byte[]) plot_yhi#12 )
+  (byte[]) plot_xlo#3 ← phi( line_xdyd/(byte[]) plot_xlo#11 line_xdyd::@2/(byte[]) plot_xlo#12 )
+  (byte[]) plot_xhi#3 ← phi( line_xdyd/(byte[]) plot_xhi#11 line_xdyd::@2/(byte[]) plot_xhi#12 )
+  (byte) line_xdyd::xd#4 ← phi( line_xdyd/(byte) line_xdyd::xd#5 line_xdyd::@2/(byte) line_xdyd::xd#6 )
+  (byte) line_xdyd::yd#4 ← phi( line_xdyd/(byte) line_xdyd::yd#2 line_xdyd::@2/(byte) line_xdyd::yd#5 )
+  (byte) line_xdyd::e#5 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#5 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte[]) plot_bit#27 ← phi( line_xdyd::@1/(byte[]) plot_bit#3 )
+  (byte[]) plot_ylo#26 ← phi( line_xdyd::@1/(byte[]) plot_ylo#3 )
+  (byte[]) plot_yhi#26 ← phi( line_xdyd::@1/(byte[]) plot_yhi#3 )
+  (byte[]) plot_xlo#27 ← phi( line_xdyd::@1/(byte[]) plot_xlo#3 )
+  (byte[]) plot_xhi#27 ← phi( line_xdyd::@1/(byte[]) plot_xhi#3 )
+  (byte) line_xdyd::y#7 ← phi( line_xdyd::@1/(byte) line_xdyd::y#3 )
+  (byte) line_xdyd::x1#4 ← phi( line_xdyd::@1/(byte) line_xdyd::x1#5 )
+  (byte) line_xdyd::xd#2 ← phi( line_xdyd::@1/(byte) line_xdyd::xd#4 )
+  (byte) line_xdyd::yd#3 ← phi( line_xdyd::@1/(byte) line_xdyd::yd#4 )
+  (byte) line_xdyd::e#3 ← phi( line_xdyd::@1/(byte) line_xdyd::e#5 )
+  (byte) line_xdyd::x#4 ← phi( line_xdyd::@1/(byte) line_xdyd::x#3 )
+  (byte~) line_xdyd::$2 ← (byte) line_xdyd::x#4 + (byte) 1
+  (byte) line_xdyd::x#2 ← (byte~) line_xdyd::$2
+  (byte~) line_xdyd::$3 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#3
+  (byte) line_xdyd::e#1 ← (byte~) line_xdyd::$3
+  (boolean~) line_xdyd::$4 ← (byte) line_xdyd::xd#2 < (byte) line_xdyd::e#1
+  (boolean~) line_xdyd::$5 ← ! (boolean~) line_xdyd::$4
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte[]) plot_bit#12 ← phi( line_xdyd::@3/(byte[]) plot_bit#26 line_xdyd::@5/(byte[]) plot_bit#27 )
+  (byte[]) plot_ylo#12 ← phi( line_xdyd::@3/(byte[]) plot_ylo#25 line_xdyd::@5/(byte[]) plot_ylo#26 )
+  (byte[]) plot_yhi#12 ← phi( line_xdyd::@3/(byte[]) plot_yhi#25 line_xdyd::@5/(byte[]) plot_yhi#26 )
+  (byte[]) plot_xlo#12 ← phi( line_xdyd::@3/(byte[]) plot_xlo#26 line_xdyd::@5/(byte[]) plot_xlo#27 )
+  (byte[]) plot_xhi#12 ← phi( line_xdyd::@3/(byte[]) plot_xhi#26 line_xdyd::@5/(byte[]) plot_xhi#27 )
+  (byte) line_xdyd::xd#6 ← phi( line_xdyd::@3/(byte) line_xdyd::xd#3 line_xdyd::@5/(byte) line_xdyd::xd#2 )
+  (byte) line_xdyd::yd#5 ← phi( line_xdyd::@3/(byte) line_xdyd::yd#6 line_xdyd::@5/(byte) line_xdyd::yd#3 )
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#7 )
+  (byte) line_xdyd::x#5 ← phi( line_xdyd::@3/(byte) line_xdyd::x#7 line_xdyd::@5/(byte) line_xdyd::x#2 )
+  (byte) line_xdyd::x1#2 ← phi( line_xdyd::@3/(byte) line_xdyd::x1#3 line_xdyd::@5/(byte) line_xdyd::x1#4 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#2 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x#5 < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte[]) plot_bit#26 ← phi( line_xdyd::@5/(byte[]) plot_bit#27 )
+  (byte[]) plot_ylo#25 ← phi( line_xdyd::@5/(byte[]) plot_ylo#26 )
+  (byte[]) plot_yhi#25 ← phi( line_xdyd::@5/(byte[]) plot_yhi#26 )
+  (byte[]) plot_xlo#26 ← phi( line_xdyd::@5/(byte[]) plot_xlo#27 )
+  (byte[]) plot_xhi#26 ← phi( line_xdyd::@5/(byte[]) plot_xhi#27 )
+  (byte) line_xdyd::yd#6 ← phi( line_xdyd::@5/(byte) line_xdyd::yd#3 )
+  (byte) line_xdyd::x#7 ← phi( line_xdyd::@5/(byte) line_xdyd::x#2 )
+  (byte) line_xdyd::x1#3 ← phi( line_xdyd::@5/(byte) line_xdyd::x1#4 )
+  (byte) line_xdyd::xd#3 ← phi( line_xdyd::@5/(byte) line_xdyd::xd#2 )
+  (byte) line_xdyd::e#4 ← phi( line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#4 ← phi( line_xdyd::@5/(byte) line_xdyd::y#7 )
+  (byte~) line_xdyd::$6 ← (byte) line_xdyd::y#4 - (byte) 1
+  (byte) line_xdyd::y#2 ← (byte~) line_xdyd::$6
+  (byte~) line_xdyd::$7 ← (byte) line_xdyd::e#4 - (byte) line_xdyd::xd#3
+  (byte) line_xdyd::e#2 ← (byte~) line_xdyd::$7
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte[]) plot_bit#13 ← phi( line::@13/(byte[]) plot_bit#28 line::@3/(byte[]) plot_bit#29 )
+  (byte[]) plot_ylo#13 ← phi( line::@13/(byte[]) plot_ylo#27 line::@3/(byte[]) plot_ylo#28 )
+  (byte[]) plot_yhi#13 ← phi( line::@13/(byte[]) plot_yhi#27 line::@3/(byte[]) plot_yhi#28 )
+  (byte[]) plot_xlo#13 ← phi( line::@13/(byte[]) plot_xlo#28 line::@3/(byte[]) plot_xlo#29 )
+  (byte[]) plot_xhi#13 ← phi( line::@13/(byte[]) plot_xhi#28 line::@3/(byte[]) plot_xhi#29 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte~) line_ydxi::$0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  (byte) line_ydxi::e#0 ← (byte~) line_ydxi::$0
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::y1#5 ← phi( line_ydxi/(byte) line_ydxi::y1#6 line_ydxi::@2/(byte) line_ydxi::y1#2 )
+  (byte[]) plot_bit#6 ← phi( line_ydxi/(byte[]) plot_bit#13 line_ydxi::@2/(byte[]) plot_bit#14 )
+  (byte[]) plot_ylo#6 ← phi( line_ydxi/(byte[]) plot_ylo#13 line_ydxi::@2/(byte[]) plot_ylo#14 )
+  (byte[]) plot_yhi#6 ← phi( line_ydxi/(byte[]) plot_yhi#13 line_ydxi::@2/(byte[]) plot_yhi#14 )
+  (byte[]) plot_xlo#6 ← phi( line_ydxi/(byte[]) plot_xlo#13 line_ydxi::@2/(byte[]) plot_xlo#14 )
+  (byte[]) plot_xhi#6 ← phi( line_ydxi/(byte[]) plot_xhi#13 line_ydxi::@2/(byte[]) plot_xhi#14 )
+  (byte) line_ydxi::yd#4 ← phi( line_ydxi/(byte) line_ydxi::yd#5 line_ydxi::@2/(byte) line_ydxi::yd#6 )
+  (byte) line_ydxi::xd#4 ← phi( line_ydxi/(byte) line_ydxi::xd#2 line_ydxi::@2/(byte) line_ydxi::xd#5 )
+  (byte) line_ydxi::e#5 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#5 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte[]) plot_bit#31 ← phi( line_ydxi::@1/(byte[]) plot_bit#6 )
+  (byte[]) plot_ylo#30 ← phi( line_ydxi::@1/(byte[]) plot_ylo#6 )
+  (byte[]) plot_yhi#30 ← phi( line_ydxi::@1/(byte[]) plot_yhi#6 )
+  (byte[]) plot_xlo#31 ← phi( line_ydxi::@1/(byte[]) plot_xlo#6 )
+  (byte[]) plot_xhi#31 ← phi( line_ydxi::@1/(byte[]) plot_xhi#6 )
+  (byte) line_ydxi::x#7 ← phi( line_ydxi::@1/(byte) line_ydxi::x#3 )
+  (byte) line_ydxi::y1#4 ← phi( line_ydxi::@1/(byte) line_ydxi::y1#5 )
+  (byte) line_ydxi::yd#2 ← phi( line_ydxi::@1/(byte) line_ydxi::yd#4 )
+  (byte) line_ydxi::xd#3 ← phi( line_ydxi::@1/(byte) line_ydxi::xd#4 )
+  (byte) line_ydxi::e#3 ← phi( line_ydxi::@1/(byte) line_ydxi::e#5 )
+  (byte) line_ydxi::y#4 ← phi( line_ydxi::@1/(byte) line_ydxi::y#3 )
+  (byte~) line_ydxi::$2 ← (byte) line_ydxi::y#4 + (byte) 1
+  (byte) line_ydxi::y#2 ← (byte~) line_ydxi::$2
+  (byte~) line_ydxi::$3 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#3
+  (byte) line_ydxi::e#1 ← (byte~) line_ydxi::$3
+  (boolean~) line_ydxi::$4 ← (byte) line_ydxi::yd#2 < (byte) line_ydxi::e#1
+  (boolean~) line_ydxi::$5 ← ! (boolean~) line_ydxi::$4
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte[]) plot_bit#14 ← phi( line_ydxi::@3/(byte[]) plot_bit#30 line_ydxi::@5/(byte[]) plot_bit#31 )
+  (byte[]) plot_ylo#14 ← phi( line_ydxi::@3/(byte[]) plot_ylo#29 line_ydxi::@5/(byte[]) plot_ylo#30 )
+  (byte[]) plot_yhi#14 ← phi( line_ydxi::@3/(byte[]) plot_yhi#29 line_ydxi::@5/(byte[]) plot_yhi#30 )
+  (byte[]) plot_xlo#14 ← phi( line_ydxi::@3/(byte[]) plot_xlo#30 line_ydxi::@5/(byte[]) plot_xlo#31 )
+  (byte[]) plot_xhi#14 ← phi( line_ydxi::@3/(byte[]) plot_xhi#30 line_ydxi::@5/(byte[]) plot_xhi#31 )
+  (byte) line_ydxi::yd#6 ← phi( line_ydxi::@3/(byte) line_ydxi::yd#3 line_ydxi::@5/(byte) line_ydxi::yd#2 )
+  (byte) line_ydxi::xd#5 ← phi( line_ydxi::@3/(byte) line_ydxi::xd#6 line_ydxi::@5/(byte) line_ydxi::xd#3 )
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#7 )
+  (byte) line_ydxi::y#5 ← phi( line_ydxi::@3/(byte) line_ydxi::y#7 line_ydxi::@5/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::y1#2 ← phi( line_ydxi::@3/(byte) line_ydxi::y1#3 line_ydxi::@5/(byte) line_ydxi::y1#4 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#2 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y#5 < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte[]) plot_bit#30 ← phi( line_ydxi::@5/(byte[]) plot_bit#31 )
+  (byte[]) plot_ylo#29 ← phi( line_ydxi::@5/(byte[]) plot_ylo#30 )
+  (byte[]) plot_yhi#29 ← phi( line_ydxi::@5/(byte[]) plot_yhi#30 )
+  (byte[]) plot_xlo#30 ← phi( line_ydxi::@5/(byte[]) plot_xlo#31 )
+  (byte[]) plot_xhi#30 ← phi( line_ydxi::@5/(byte[]) plot_xhi#31 )
+  (byte) line_ydxi::xd#6 ← phi( line_ydxi::@5/(byte) line_ydxi::xd#3 )
+  (byte) line_ydxi::y#7 ← phi( line_ydxi::@5/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::y1#3 ← phi( line_ydxi::@5/(byte) line_ydxi::y1#4 )
+  (byte) line_ydxi::yd#3 ← phi( line_ydxi::@5/(byte) line_ydxi::yd#2 )
+  (byte) line_ydxi::e#4 ← phi( line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#4 ← phi( line_ydxi::@5/(byte) line_ydxi::x#7 )
+  (byte~) line_ydxi::$6 ← (byte) line_ydxi::x#4 + (byte) 1
+  (byte) line_ydxi::x#2 ← (byte~) line_ydxi::$6
+  (byte~) line_ydxi::$7 ← (byte) line_ydxi::e#4 - (byte) line_ydxi::yd#3
+  (byte) line_ydxi::e#2 ← (byte~) line_ydxi::$7
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte[]) plot_bit#15 ← phi( line::@10/(byte[]) plot_bit#32 line::@6/(byte[]) plot_bit#33 )
+  (byte[]) plot_ylo#15 ← phi( line::@10/(byte[]) plot_ylo#31 line::@6/(byte[]) plot_ylo#32 )
+  (byte[]) plot_yhi#15 ← phi( line::@10/(byte[]) plot_yhi#31 line::@6/(byte[]) plot_yhi#32 )
+  (byte[]) plot_xlo#15 ← phi( line::@10/(byte[]) plot_xlo#32 line::@6/(byte[]) plot_xlo#33 )
+  (byte[]) plot_xhi#15 ← phi( line::@10/(byte[]) plot_xhi#32 line::@6/(byte[]) plot_xhi#33 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte~) line_ydxd::$0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  (byte) line_ydxd::e#0 ← (byte~) line_ydxd::$0
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::y1#5 ← phi( line_ydxd/(byte) line_ydxd::y1#6 line_ydxd::@2/(byte) line_ydxd::y1#2 )
+  (byte[]) plot_bit#5 ← phi( line_ydxd/(byte[]) plot_bit#15 line_ydxd::@2/(byte[]) plot_bit#16 )
+  (byte[]) plot_ylo#5 ← phi( line_ydxd/(byte[]) plot_ylo#15 line_ydxd::@2/(byte[]) plot_ylo#16 )
+  (byte[]) plot_yhi#5 ← phi( line_ydxd/(byte[]) plot_yhi#15 line_ydxd::@2/(byte[]) plot_yhi#16 )
+  (byte[]) plot_xlo#5 ← phi( line_ydxd/(byte[]) plot_xlo#15 line_ydxd::@2/(byte[]) plot_xlo#16 )
+  (byte[]) plot_xhi#5 ← phi( line_ydxd/(byte[]) plot_xhi#15 line_ydxd::@2/(byte[]) plot_xhi#16 )
+  (byte) line_ydxd::yd#4 ← phi( line_ydxd/(byte) line_ydxd::yd#5 line_ydxd::@2/(byte) line_ydxd::yd#6 )
+  (byte) line_ydxd::xd#4 ← phi( line_ydxd/(byte) line_ydxd::xd#2 line_ydxd::@2/(byte) line_ydxd::xd#5 )
+  (byte) line_ydxd::e#5 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#5 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte[]) plot_bit#35 ← phi( line_ydxd::@1/(byte[]) plot_bit#5 )
+  (byte[]) plot_ylo#34 ← phi( line_ydxd::@1/(byte[]) plot_ylo#5 )
+  (byte[]) plot_yhi#34 ← phi( line_ydxd::@1/(byte[]) plot_yhi#5 )
+  (byte[]) plot_xlo#35 ← phi( line_ydxd::@1/(byte[]) plot_xlo#5 )
+  (byte[]) plot_xhi#35 ← phi( line_ydxd::@1/(byte[]) plot_xhi#5 )
+  (byte) line_ydxd::x#7 ← phi( line_ydxd::@1/(byte) line_ydxd::x#3 )
+  (byte) line_ydxd::y1#4 ← phi( line_ydxd::@1/(byte) line_ydxd::y1#5 )
+  (byte) line_ydxd::yd#2 ← phi( line_ydxd::@1/(byte) line_ydxd::yd#4 )
+  (byte) line_ydxd::xd#3 ← phi( line_ydxd::@1/(byte) line_ydxd::xd#4 )
+  (byte) line_ydxd::e#3 ← phi( line_ydxd::@1/(byte) line_ydxd::e#5 )
+  (byte) line_ydxd::y#4 ← phi( line_ydxd::@1/(byte) line_ydxd::y#3 )
+  (byte~) line_ydxd::$2 ← (byte) line_ydxd::y#4 + (byte) 1
+  (byte) line_ydxd::y#2 ← (byte~) line_ydxd::$2
+  (byte~) line_ydxd::$3 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#3
+  (byte) line_ydxd::e#1 ← (byte~) line_ydxd::$3
+  (boolean~) line_ydxd::$4 ← (byte) line_ydxd::yd#2 < (byte) line_ydxd::e#1
+  (boolean~) line_ydxd::$5 ← ! (boolean~) line_ydxd::$4
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte[]) plot_bit#16 ← phi( line_ydxd::@3/(byte[]) plot_bit#34 line_ydxd::@5/(byte[]) plot_bit#35 )
+  (byte[]) plot_ylo#16 ← phi( line_ydxd::@3/(byte[]) plot_ylo#33 line_ydxd::@5/(byte[]) plot_ylo#34 )
+  (byte[]) plot_yhi#16 ← phi( line_ydxd::@3/(byte[]) plot_yhi#33 line_ydxd::@5/(byte[]) plot_yhi#34 )
+  (byte[]) plot_xlo#16 ← phi( line_ydxd::@3/(byte[]) plot_xlo#34 line_ydxd::@5/(byte[]) plot_xlo#35 )
+  (byte[]) plot_xhi#16 ← phi( line_ydxd::@3/(byte[]) plot_xhi#34 line_ydxd::@5/(byte[]) plot_xhi#35 )
+  (byte) line_ydxd::yd#6 ← phi( line_ydxd::@3/(byte) line_ydxd::yd#3 line_ydxd::@5/(byte) line_ydxd::yd#2 )
+  (byte) line_ydxd::xd#5 ← phi( line_ydxd::@3/(byte) line_ydxd::xd#6 line_ydxd::@5/(byte) line_ydxd::xd#3 )
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#7 )
+  (byte) line_ydxd::y#5 ← phi( line_ydxd::@3/(byte) line_ydxd::y#7 line_ydxd::@5/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::y1#2 ← phi( line_ydxd::@3/(byte) line_ydxd::y1#3 line_ydxd::@5/(byte) line_ydxd::y1#4 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#2 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y#5 < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte[]) plot_bit#34 ← phi( line_ydxd::@5/(byte[]) plot_bit#35 )
+  (byte[]) plot_ylo#33 ← phi( line_ydxd::@5/(byte[]) plot_ylo#34 )
+  (byte[]) plot_yhi#33 ← phi( line_ydxd::@5/(byte[]) plot_yhi#34 )
+  (byte[]) plot_xlo#34 ← phi( line_ydxd::@5/(byte[]) plot_xlo#35 )
+  (byte[]) plot_xhi#34 ← phi( line_ydxd::@5/(byte[]) plot_xhi#35 )
+  (byte) line_ydxd::xd#6 ← phi( line_ydxd::@5/(byte) line_ydxd::xd#3 )
+  (byte) line_ydxd::y#7 ← phi( line_ydxd::@5/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::y1#3 ← phi( line_ydxd::@5/(byte) line_ydxd::y1#4 )
+  (byte) line_ydxd::yd#3 ← phi( line_ydxd::@5/(byte) line_ydxd::yd#2 )
+  (byte) line_ydxd::e#4 ← phi( line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#4 ← phi( line_ydxd::@5/(byte) line_ydxd::x#7 )
+  (byte~) line_ydxd::$6 ← (byte) line_ydxd::x#4 - (byte) 1
+  (byte) line_ydxd::x#2 ← (byte~) line_ydxd::$6
+  (byte~) line_ydxd::$7 ← (byte) line_ydxd::e#4 - (byte) line_ydxd::yd#3
+  (byte) line_ydxd::e#2 ← (byte~) line_ydxd::$7
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte[]) plot_bit#1 ← phi( line_xdyd::@1/(byte[]) plot_bit#3 line_xdyi::@1/(byte[]) plot_bit#4 line_ydxd::@1/(byte[]) plot_bit#5 line_ydxi::@1/(byte[]) plot_bit#6 )
+  (byte[]) plot_ylo#1 ← phi( line_xdyd::@1/(byte[]) plot_ylo#3 line_xdyi::@1/(byte[]) plot_ylo#4 line_ydxd::@1/(byte[]) plot_ylo#5 line_ydxi::@1/(byte[]) plot_ylo#6 )
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte[]) plot_yhi#1 ← phi( line_xdyd::@1/(byte[]) plot_yhi#3 line_xdyi::@1/(byte[]) plot_yhi#4 line_ydxd::@1/(byte[]) plot_yhi#5 line_ydxi::@1/(byte[]) plot_yhi#6 )
+  (byte[]) plot_xlo#1 ← phi( line_xdyd::@1/(byte[]) plot_xlo#3 line_xdyi::@1/(byte[]) plot_xlo#4 line_ydxd::@1/(byte[]) plot_xlo#5 line_ydxi::@1/(byte[]) plot_xlo#6 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte[]) plot_xhi#1 ← phi( line_xdyd::@1/(byte[]) plot_xhi#3 line_xdyi::@1/(byte[]) plot_xhi#4 line_ydxd::@1/(byte[]) plot_xhi#5 line_ydxi::@1/(byte[]) plot_xhi#6 )
   (byte*) plot::plotter_x#0 ← (byte) 0
   (byte*) plot::plotter_y#0 ← (byte) 0
-  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#9
+  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte~) plot::$4 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte*) plot::plotter#0 ← (byte~) plot::$4
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -3586,23 +5526,23 @@ plot::@return: scope:[plot]  from plot
   return 
   to:@return
 init_plot_tables: scope:[init_plot_tables]  from main::@3
-  (byte[]) plot_yhi#28 ← phi( main::@3/(byte[]) plot_yhi#31 )
-  (byte[]) plot_ylo#28 ← phi( main::@3/(byte[]) plot_ylo#31 )
-  (byte[]) plot_bit#12 ← phi( main::@3/(byte[]) plot_bit#19 )
-  (byte[]) plot_xhi#12 ← phi( main::@3/(byte[]) plot_xhi#19 )
+  (byte[]) plot_yhi#41 ← phi( main::@3/(byte[]) plot_yhi#44 )
+  (byte[]) plot_ylo#41 ← phi( main::@3/(byte[]) plot_ylo#44 )
+  (byte[]) plot_bit#7 ← phi( main::@3/(byte[]) plot_bit#17 )
+  (byte[]) plot_xhi#7 ← phi( main::@3/(byte[]) plot_xhi#17 )
   (byte*) BITMAP#4 ← phi( main::@3/(byte*) BITMAP#8 )
-  (byte[]) plot_xlo#12 ← phi( main::@3/(byte[]) plot_xlo#19 )
+  (byte[]) plot_xlo#7 ← phi( main::@3/(byte[]) plot_xlo#17 )
   (byte) init_plot_tables::bit#0 ← (byte) 128
   (byte) init_plot_tables::x#0 ← (byte) 0
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@2
-  (byte[]) plot_yhi#25 ← phi( init_plot_tables/(byte[]) plot_yhi#28 init_plot_tables::@2/(byte[]) plot_yhi#19 )
-  (byte[]) plot_ylo#25 ← phi( init_plot_tables/(byte[]) plot_ylo#28 init_plot_tables::@2/(byte[]) plot_ylo#19 )
-  (byte[]) plot_bit#2 ← phi( init_plot_tables/(byte[]) plot_bit#12 init_plot_tables::@2/(byte[]) plot_bit#13 )
+  (byte[]) plot_yhi#35 ← phi( init_plot_tables/(byte[]) plot_yhi#41 init_plot_tables::@2/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#35 ← phi( init_plot_tables/(byte[]) plot_ylo#41 init_plot_tables::@2/(byte[]) plot_ylo#17 )
+  (byte[]) plot_bit#2 ← phi( init_plot_tables/(byte[]) plot_bit#7 init_plot_tables::@2/(byte[]) plot_bit#8 )
   (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) init_plot_tables::bit#0 init_plot_tables::@2/(byte) init_plot_tables::bit#4 )
-  (byte[]) plot_xhi#2 ← phi( init_plot_tables/(byte[]) plot_xhi#12 init_plot_tables::@2/(byte[]) plot_xhi#13 )
+  (byte[]) plot_xhi#2 ← phi( init_plot_tables/(byte[]) plot_xhi#7 init_plot_tables::@2/(byte[]) plot_xhi#8 )
   (byte*) BITMAP#1 ← phi( init_plot_tables/(byte*) BITMAP#4 init_plot_tables::@2/(byte*) BITMAP#5 )
-  (byte[]) plot_xlo#2 ← phi( init_plot_tables/(byte[]) plot_xlo#12 init_plot_tables::@2/(byte[]) plot_xlo#13 )
+  (byte[]) plot_xlo#2 ← phi( init_plot_tables/(byte[]) plot_xlo#7 init_plot_tables::@2/(byte[]) plot_xlo#8 )
   (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) init_plot_tables::x#0 init_plot_tables::@2/(byte) init_plot_tables::x#1 )
   (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248
   *((byte[]) plot_xlo#2 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0
@@ -3616,37 +5556,37 @@ init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_
   if((boolean~) init_plot_tables::$4) goto init_plot_tables::@2
   to:init_plot_tables::@5
 init_plot_tables::@2: scope:[init_plot_tables]  from init_plot_tables::@1 init_plot_tables::@5
-  (byte[]) plot_yhi#19 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#25 init_plot_tables::@5/(byte[]) plot_yhi#26 )
-  (byte[]) plot_ylo#19 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#25 init_plot_tables::@5/(byte[]) plot_ylo#26 )
-  (byte[]) plot_bit#13 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 init_plot_tables::@5/(byte[]) plot_bit#20 )
+  (byte[]) plot_yhi#17 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#35 init_plot_tables::@5/(byte[]) plot_yhi#36 )
+  (byte[]) plot_ylo#17 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#35 init_plot_tables::@5/(byte[]) plot_ylo#36 )
+  (byte[]) plot_bit#8 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 init_plot_tables::@5/(byte[]) plot_bit#18 )
   (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@1/(byte) init_plot_tables::bit#1 init_plot_tables::@5/(byte) init_plot_tables::bit#2 )
-  (byte[]) plot_xhi#13 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 init_plot_tables::@5/(byte[]) plot_xhi#20 )
+  (byte[]) plot_xhi#8 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 init_plot_tables::@5/(byte[]) plot_xhi#18 )
   (byte*) BITMAP#5 ← phi( init_plot_tables::@1/(byte*) BITMAP#1 init_plot_tables::@5/(byte*) BITMAP#9 )
-  (byte[]) plot_xlo#13 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 init_plot_tables::@5/(byte[]) plot_xlo#20 )
+  (byte[]) plot_xlo#8 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 init_plot_tables::@5/(byte[]) plot_xlo#18 )
   (byte) init_plot_tables::x#3 ← phi( init_plot_tables::@1/(byte) init_plot_tables::x#2 init_plot_tables::@5/(byte) init_plot_tables::x#4 )
   (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#3
   (boolean~) init_plot_tables::$5 ← (byte) init_plot_tables::x#1 != (byte) 0
   if((boolean~) init_plot_tables::$5) goto init_plot_tables::@1
   to:init_plot_tables::@6
 init_plot_tables::@5: scope:[init_plot_tables]  from init_plot_tables::@1
-  (byte[]) plot_yhi#26 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#25 )
-  (byte[]) plot_ylo#26 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#25 )
-  (byte[]) plot_bit#20 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 )
-  (byte[]) plot_xhi#20 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 )
+  (byte[]) plot_yhi#36 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#35 )
+  (byte[]) plot_ylo#36 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#35 )
+  (byte[]) plot_bit#18 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 )
+  (byte[]) plot_xhi#18 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 )
   (byte*) BITMAP#9 ← phi( init_plot_tables::@1/(byte*) BITMAP#1 )
-  (byte[]) plot_xlo#20 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 )
+  (byte[]) plot_xlo#18 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 )
   (byte) init_plot_tables::x#4 ← phi( init_plot_tables::@1/(byte) init_plot_tables::x#2 )
   (byte) init_plot_tables::bit#2 ← (byte) 128
   to:init_plot_tables::@2
 init_plot_tables::@6: scope:[init_plot_tables]  from init_plot_tables::@2
-  (byte[]) plot_yhi#13 ← phi( init_plot_tables::@2/(byte[]) plot_yhi#19 )
-  (byte[]) plot_ylo#13 ← phi( init_plot_tables::@2/(byte[]) plot_ylo#19 )
+  (byte[]) plot_yhi#8 ← phi( init_plot_tables::@2/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#8 ← phi( init_plot_tables::@2/(byte[]) plot_ylo#17 )
   (byte*) init_plot_tables::yoffs#0 ← (byte) 0
   (byte) init_plot_tables::y#0 ← (byte) 0
   to:init_plot_tables::@3
 init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_plot_tables::@6
-  (byte[]) plot_yhi#2 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#12 init_plot_tables::@6/(byte[]) plot_yhi#13 )
-  (byte[]) plot_ylo#2 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#12 init_plot_tables::@6/(byte[]) plot_ylo#13 )
+  (byte[]) plot_yhi#2 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#7 init_plot_tables::@6/(byte[]) plot_yhi#8 )
+  (byte[]) plot_ylo#2 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#7 init_plot_tables::@6/(byte[]) plot_ylo#8 )
   (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@6/(byte*) init_plot_tables::yoffs#0 )
   (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@6/(byte) init_plot_tables::y#0 )
   (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7
@@ -3661,8 +5601,8 @@ init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_p
   if((boolean~) init_plot_tables::$12) goto init_plot_tables::@4
   to:init_plot_tables::@7
 init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_plot_tables::@7
-  (byte[]) plot_yhi#12 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 init_plot_tables::@7/(byte[]) plot_yhi#20 )
-  (byte[]) plot_ylo#12 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 init_plot_tables::@7/(byte[]) plot_ylo#20 )
+  (byte[]) plot_yhi#7 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 init_plot_tables::@7/(byte[]) plot_yhi#18 )
+  (byte[]) plot_ylo#7 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 init_plot_tables::@7/(byte[]) plot_ylo#18 )
   (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 init_plot_tables::@7/(byte*) init_plot_tables::yoffs#1 )
   (byte) init_plot_tables::y#3 ← phi( init_plot_tables::@3/(byte) init_plot_tables::y#2 init_plot_tables::@7/(byte) init_plot_tables::y#4 )
   (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#3
@@ -3670,8 +5610,8 @@ init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_p
   if((boolean~) init_plot_tables::$14) goto init_plot_tables::@3
   to:init_plot_tables::@return
 init_plot_tables::@7: scope:[init_plot_tables]  from init_plot_tables::@3
-  (byte[]) plot_yhi#20 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 )
-  (byte[]) plot_ylo#20 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 )
+  (byte[]) plot_yhi#18 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 )
+  (byte[]) plot_ylo#18 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 )
   (byte) init_plot_tables::y#4 ← phi( init_plot_tables::@3/(byte) init_plot_tables::y#2 )
   (byte*) init_plot_tables::yoffs#3 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 )
   (byte*~) init_plot_tables::$13 ← (byte*) init_plot_tables::yoffs#3 + (word) 320
@@ -3711,16 +5651,16 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
-  (byte[]) plot_yhi#34 ← phi( @begin/(byte[]) plot_yhi#0 )
-  (byte[]) plot_ylo#34 ← phi( @begin/(byte[]) plot_ylo#0 )
+@10: scope:[]  from @begin
+  (byte[]) plot_yhi#47 ← phi( @begin/(byte[]) plot_yhi#0 )
+  (byte[]) plot_ylo#47 ← phi( @begin/(byte[]) plot_ylo#0 )
   (byte) lines_cnt#9 ← phi( @begin/(byte) lines_cnt#0 )
   (byte[]) lines_y#9 ← phi( @begin/(byte[]) lines_y#0 )
   (byte[]) lines_x#9 ← phi( @begin/(byte[]) lines_x#0 )
   (byte*) SCREEN#6 ← phi( @begin/(byte*) SCREEN#0 )
-  (byte[]) plot_bit#26 ← phi( @begin/(byte[]) plot_bit#0 )
-  (byte[]) plot_xhi#26 ← phi( @begin/(byte[]) plot_xhi#0 )
-  (byte[]) plot_xlo#26 ← phi( @begin/(byte[]) plot_xlo#0 )
+  (byte[]) plot_bit#36 ← phi( @begin/(byte[]) plot_bit#0 )
+  (byte[]) plot_xhi#36 ← phi( @begin/(byte[]) plot_xhi#0 )
+  (byte[]) plot_xlo#36 ← phi( @begin/(byte[]) plot_xlo#0 )
   (byte*) BITMAP#7 ← phi( @begin/(byte*) BITMAP#0 )
   (byte*) D018#2 ← phi( @begin/(byte*) D018#0 )
   (byte*) D011#2 ← phi( @begin/(byte*) D011#0 )
@@ -3731,13 +5671,19 @@ init_screen::@return: scope:[init_screen]  from init_screen::@2
   (byte*) BGCOL#2 ← phi( @begin/(byte*) BGCOL#0 )
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Inversing boolean not (boolean~) line::$1 ← (byte) line::x0#1 >= (byte) line::x1#1 from (boolean~) line::$0 ← (byte) line::x0#1 < (byte) line::x1#1
-Inversing boolean not (boolean~) line::$15 ← (byte) line::y0#1 >= (byte) line::y1#1 from (boolean~) line::$14 ← (byte) line::y0#1 < (byte) line::y1#1
+Inversing boolean not (boolean~) line::$17 ← (byte) line::y0#1 >= (byte) line::y1#1 from (boolean~) line::$16 ← (byte) line::y0#1 < (byte) line::y1#1
 Inversing boolean not (boolean~) line::$4 ← (byte) line::y0#2 >= (byte) line::y1#2 from (boolean~) line::$3 ← (byte) line::y0#2 < (byte) line::y1#2
-Inversing boolean not (boolean~) line::$7 ← (byte) line::yd#0 >= (byte) line::xd#2 from (boolean~) line::$6 ← (byte) line::yd#0 < (byte) line::xd#2
-Inversing boolean not (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#1 >= (byte) line_xdyi::e#1 from (boolean~) line_xdyi::$4 ← (byte) line_xdyi::xd#1 < (byte) line_xdyi::e#1
+Inversing boolean not (boolean~) line::$12 ← (byte) line::yd#0 >= (byte) line::xd#2 from (boolean~) line::$11 ← (byte) line::yd#0 < (byte) line::xd#2
+Inversing boolean not (boolean~) line::$7 ← (byte) line::yd#1 >= (byte) line::xd#3 from (boolean~) line::$6 ← (byte) line::yd#1 < (byte) line::xd#3
+Inversing boolean not (boolean~) line::$25 ← (byte) line::yd#2 >= (byte) line::xd#8 from (boolean~) line::$24 ← (byte) line::yd#2 < (byte) line::xd#8
+Inversing boolean not (boolean~) line::$20 ← (byte) line::yd#3 >= (byte) line::xd#9 from (boolean~) line::$19 ← (byte) line::yd#3 < (byte) line::xd#9
+Inversing boolean not (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#2 >= (byte) line_xdyi::e#1 from (boolean~) line_xdyi::$4 ← (byte) line_xdyi::xd#2 < (byte) line_xdyi::e#1
+Inversing boolean not (boolean~) line_xdyd::$5 ← (byte) line_xdyd::xd#2 >= (byte) line_xdyd::e#1 from (boolean~) line_xdyd::$4 ← (byte) line_xdyd::xd#2 < (byte) line_xdyd::e#1
+Inversing boolean not (boolean~) line_ydxi::$5 ← (byte) line_ydxi::yd#2 >= (byte) line_ydxi::e#1 from (boolean~) line_ydxi::$4 ← (byte) line_ydxi::yd#2 < (byte) line_ydxi::e#1
+Inversing boolean not (boolean~) line_ydxd::$5 ← (byte) line_ydxd::yd#2 >= (byte) line_ydxd::e#1 from (boolean~) line_ydxd::$4 ← (byte) line_ydxd::yd#2 < (byte) line_ydxd::e#1
 Inversing boolean not (boolean~) init_plot_tables::$4 ← (byte) init_plot_tables::bit#1 != (byte) 0 from (boolean~) init_plot_tables::$3 ← (byte) init_plot_tables::bit#1 == (byte) 0
 Inversing boolean not (boolean~) init_plot_tables::$12 ← (byte~) init_plot_tables::$10 != (byte) 7 from (boolean~) init_plot_tables::$11 ← (byte~) init_plot_tables::$10 == (byte) 7
 Succesful SSA optimization Pass2UnaryNotSimplification
@@ -3767,25 +5713,25 @@ CONTROL FLOW GRAPH
   (byte[]) lines_x#0 ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y#0 ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt#0 ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
-  (byte[]) plot_yhi#32 ← phi( @7/(byte[]) plot_yhi#34 )
-  (byte[]) plot_ylo#32 ← phi( @7/(byte[]) plot_ylo#34 )
-  (byte) lines_cnt#8 ← phi( @7/(byte) lines_cnt#9 )
-  (byte[]) lines_y#8 ← phi( @7/(byte[]) lines_y#9 )
-  (byte[]) lines_x#8 ← phi( @7/(byte[]) lines_x#9 )
-  (byte*) SCREEN#5 ← phi( @7/(byte*) SCREEN#6 )
-  (byte[]) plot_bit#21 ← phi( @7/(byte[]) plot_bit#26 )
-  (byte[]) plot_xhi#21 ← phi( @7/(byte[]) plot_xhi#26 )
-  (byte[]) plot_xlo#21 ← phi( @7/(byte[]) plot_xlo#26 )
-  (byte*) BITMAP#6 ← phi( @7/(byte*) BITMAP#7 )
-  (byte*) D018#1 ← phi( @7/(byte*) D018#2 )
-  (byte*) D011#1 ← phi( @7/(byte*) D011#2 )
-  (byte) RSEL#1 ← phi( @7/(byte) RSEL#2 )
-  (byte) DEN#1 ← phi( @7/(byte) DEN#2 )
-  (byte) BMM#1 ← phi( @7/(byte) BMM#2 )
-  (byte*) FGCOL#1 ← phi( @7/(byte*) FGCOL#2 )
-  (byte*) BGCOL#1 ← phi( @7/(byte*) BGCOL#2 )
+  to:@10
+main: scope:[main]  from @10
+  (byte[]) plot_yhi#45 ← phi( @10/(byte[]) plot_yhi#47 )
+  (byte[]) plot_ylo#45 ← phi( @10/(byte[]) plot_ylo#47 )
+  (byte) lines_cnt#8 ← phi( @10/(byte) lines_cnt#9 )
+  (byte[]) lines_y#8 ← phi( @10/(byte[]) lines_y#9 )
+  (byte[]) lines_x#8 ← phi( @10/(byte[]) lines_x#9 )
+  (byte*) SCREEN#5 ← phi( @10/(byte*) SCREEN#6 )
+  (byte[]) plot_bit#19 ← phi( @10/(byte[]) plot_bit#36 )
+  (byte[]) plot_xhi#19 ← phi( @10/(byte[]) plot_xhi#36 )
+  (byte[]) plot_xlo#19 ← phi( @10/(byte[]) plot_xlo#36 )
+  (byte*) BITMAP#6 ← phi( @10/(byte*) BITMAP#7 )
+  (byte*) D018#1 ← phi( @10/(byte*) D018#2 )
+  (byte*) D011#1 ← phi( @10/(byte*) D011#2 )
+  (byte) RSEL#1 ← phi( @10/(byte) RSEL#2 )
+  (byte) DEN#1 ← phi( @10/(byte) DEN#2 )
+  (byte) BMM#1 ← phi( @10/(byte) BMM#2 )
+  (byte*) FGCOL#1 ← phi( @10/(byte*) FGCOL#2 )
+  (byte*) BGCOL#1 ← phi( @10/(byte*) BGCOL#2 )
   *((byte*) BGCOL#1) ← (byte) 0
   *((byte*) FGCOL#1) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM#1 | (byte) DEN#1
@@ -3796,44 +5742,44 @@ main: scope:[main]  from @7
   call init_screen param-assignment
   to:main::@3
 main::@3: scope:[main]  from main
-  (byte[]) plot_yhi#31 ← phi( main/(byte[]) plot_yhi#32 )
-  (byte[]) plot_ylo#31 ← phi( main/(byte[]) plot_ylo#32 )
+  (byte[]) plot_yhi#44 ← phi( main/(byte[]) plot_yhi#45 )
+  (byte[]) plot_ylo#44 ← phi( main/(byte[]) plot_ylo#45 )
   (byte) lines_cnt#7 ← phi( main/(byte) lines_cnt#8 )
   (byte[]) lines_y#7 ← phi( main/(byte[]) lines_y#8 )
   (byte[]) lines_x#7 ← phi( main/(byte[]) lines_x#8 )
-  (byte[]) plot_bit#19 ← phi( main/(byte[]) plot_bit#21 )
-  (byte[]) plot_xhi#19 ← phi( main/(byte[]) plot_xhi#21 )
+  (byte[]) plot_bit#17 ← phi( main/(byte[]) plot_bit#19 )
+  (byte[]) plot_xhi#17 ← phi( main/(byte[]) plot_xhi#19 )
   (byte*) BITMAP#8 ← phi( main/(byte*) BITMAP#6 )
-  (byte[]) plot_xlo#19 ← phi( main/(byte[]) plot_xlo#21 )
+  (byte[]) plot_xlo#17 ← phi( main/(byte[]) plot_xlo#19 )
   call init_plot_tables param-assignment
   to:main::@4
 main::@4: scope:[main]  from main::@3
-  (byte[]) plot_bit#31 ← phi( main::@3/(byte[]) plot_bit#19 )
-  (byte[]) plot_ylo#35 ← phi( main::@3/(byte[]) plot_ylo#31 )
-  (byte[]) plot_yhi#35 ← phi( main::@3/(byte[]) plot_yhi#31 )
-  (byte[]) plot_xlo#31 ← phi( main::@3/(byte[]) plot_xlo#19 )
-  (byte[]) plot_xhi#31 ← phi( main::@3/(byte[]) plot_xhi#19 )
+  (byte[]) plot_bit#48 ← phi( main::@3/(byte[]) plot_bit#17 )
+  (byte[]) plot_ylo#52 ← phi( main::@3/(byte[]) plot_ylo#44 )
+  (byte[]) plot_yhi#52 ← phi( main::@3/(byte[]) plot_yhi#44 )
+  (byte[]) plot_xlo#48 ← phi( main::@3/(byte[]) plot_xlo#17 )
+  (byte[]) plot_xhi#48 ← phi( main::@3/(byte[]) plot_xhi#17 )
   (byte) lines_cnt#5 ← phi( main::@3/(byte) lines_cnt#7 )
   (byte[]) lines_y#5 ← phi( main::@3/(byte[]) lines_y#7 )
   (byte[]) lines_x#5 ← phi( main::@3/(byte[]) lines_x#7 )
   to:main::@1
 main::@1: scope:[main]  from main::@4 main::@5
-  (byte[]) plot_bit#30 ← phi( main::@4/(byte[]) plot_bit#31 main::@5/(byte[]) plot_bit#32 )
-  (byte[]) plot_ylo#33 ← phi( main::@4/(byte[]) plot_ylo#35 main::@5/(byte[]) plot_ylo#36 )
-  (byte[]) plot_yhi#33 ← phi( main::@4/(byte[]) plot_yhi#35 main::@5/(byte[]) plot_yhi#36 )
-  (byte[]) plot_xlo#30 ← phi( main::@4/(byte[]) plot_xlo#31 main::@5/(byte[]) plot_xlo#32 )
-  (byte[]) plot_xhi#30 ← phi( main::@4/(byte[]) plot_xhi#31 main::@5/(byte[]) plot_xhi#32 )
+  (byte[]) plot_bit#47 ← phi( main::@4/(byte[]) plot_bit#48 main::@5/(byte[]) plot_bit#49 )
+  (byte[]) plot_ylo#51 ← phi( main::@4/(byte[]) plot_ylo#52 main::@5/(byte[]) plot_ylo#53 )
+  (byte[]) plot_yhi#51 ← phi( main::@4/(byte[]) plot_yhi#52 main::@5/(byte[]) plot_yhi#53 )
+  (byte[]) plot_xlo#47 ← phi( main::@4/(byte[]) plot_xlo#48 main::@5/(byte[]) plot_xlo#49 )
+  (byte[]) plot_xhi#47 ← phi( main::@4/(byte[]) plot_xhi#48 main::@5/(byte[]) plot_xhi#49 )
   (byte) lines_cnt#4 ← phi( main::@4/(byte) lines_cnt#5 main::@5/(byte) lines_cnt#6 )
   (byte[]) lines_y#4 ← phi( main::@4/(byte[]) lines_y#5 main::@5/(byte[]) lines_y#6 )
   (byte[]) lines_x#4 ← phi( main::@4/(byte[]) lines_x#5 main::@5/(byte[]) lines_x#6 )
   call lines param-assignment
   to:main::@5
 main::@5: scope:[main]  from main::@1
-  (byte[]) plot_bit#32 ← phi( main::@1/(byte[]) plot_bit#30 )
-  (byte[]) plot_ylo#36 ← phi( main::@1/(byte[]) plot_ylo#33 )
-  (byte[]) plot_yhi#36 ← phi( main::@1/(byte[]) plot_yhi#33 )
-  (byte[]) plot_xlo#32 ← phi( main::@1/(byte[]) plot_xlo#30 )
-  (byte[]) plot_xhi#32 ← phi( main::@1/(byte[]) plot_xhi#30 )
+  (byte[]) plot_bit#49 ← phi( main::@1/(byte[]) plot_bit#47 )
+  (byte[]) plot_ylo#53 ← phi( main::@1/(byte[]) plot_ylo#51 )
+  (byte[]) plot_yhi#53 ← phi( main::@1/(byte[]) plot_yhi#51 )
+  (byte[]) plot_xlo#49 ← phi( main::@1/(byte[]) plot_xlo#47 )
+  (byte[]) plot_xhi#49 ← phi( main::@1/(byte[]) plot_xhi#47 )
   (byte) lines_cnt#6 ← phi( main::@1/(byte) lines_cnt#4 )
   (byte[]) lines_y#6 ← phi( main::@1/(byte[]) lines_y#4 )
   (byte[]) lines_x#6 ← phi( main::@1/(byte[]) lines_x#4 )
@@ -3843,22 +5789,22 @@ main::@return: scope:[main]  from main::@5
   return 
   to:@return
 lines: scope:[lines]  from main::@1
-  (byte[]) plot_bit#28 ← phi( main::@1/(byte[]) plot_bit#30 )
-  (byte[]) plot_ylo#29 ← phi( main::@1/(byte[]) plot_ylo#33 )
-  (byte[]) plot_yhi#29 ← phi( main::@1/(byte[]) plot_yhi#33 )
-  (byte[]) plot_xlo#28 ← phi( main::@1/(byte[]) plot_xlo#30 )
-  (byte[]) plot_xhi#28 ← phi( main::@1/(byte[]) plot_xhi#30 )
+  (byte[]) plot_bit#45 ← phi( main::@1/(byte[]) plot_bit#47 )
+  (byte[]) plot_ylo#49 ← phi( main::@1/(byte[]) plot_ylo#51 )
+  (byte[]) plot_yhi#49 ← phi( main::@1/(byte[]) plot_yhi#51 )
+  (byte[]) plot_xlo#45 ← phi( main::@1/(byte[]) plot_xlo#47 )
+  (byte[]) plot_xhi#45 ← phi( main::@1/(byte[]) plot_xhi#47 )
   (byte) lines_cnt#3 ← phi( main::@1/(byte) lines_cnt#4 )
   (byte[]) lines_y#2 ← phi( main::@1/(byte[]) lines_y#4 )
   (byte[]) lines_x#2 ← phi( main::@1/(byte[]) lines_x#4 )
   (byte) lines::l#0 ← (byte) 0
   to:lines::@1
 lines::@1: scope:[lines]  from lines lines::@3
-  (byte[]) plot_bit#27 ← phi( lines/(byte[]) plot_bit#28 lines::@3/(byte[]) plot_bit#29 )
-  (byte[]) plot_ylo#27 ← phi( lines/(byte[]) plot_ylo#29 lines::@3/(byte[]) plot_ylo#30 )
-  (byte[]) plot_yhi#27 ← phi( lines/(byte[]) plot_yhi#29 lines::@3/(byte[]) plot_yhi#30 )
-  (byte[]) plot_xlo#27 ← phi( lines/(byte[]) plot_xlo#28 lines::@3/(byte[]) plot_xlo#29 )
-  (byte[]) plot_xhi#27 ← phi( lines/(byte[]) plot_xhi#28 lines::@3/(byte[]) plot_xhi#29 )
+  (byte[]) plot_bit#44 ← phi( lines/(byte[]) plot_bit#45 lines::@3/(byte[]) plot_bit#46 )
+  (byte[]) plot_ylo#48 ← phi( lines/(byte[]) plot_ylo#49 lines::@3/(byte[]) plot_ylo#50 )
+  (byte[]) plot_yhi#48 ← phi( lines/(byte[]) plot_yhi#49 lines::@3/(byte[]) plot_yhi#50 )
+  (byte[]) plot_xlo#44 ← phi( lines/(byte[]) plot_xlo#45 lines::@3/(byte[]) plot_xlo#46 )
+  (byte[]) plot_xhi#44 ← phi( lines/(byte[]) plot_xhi#45 lines::@3/(byte[]) plot_xhi#46 )
   (byte) lines_cnt#2 ← phi( lines/(byte) lines_cnt#3 lines::@3/(byte) lines_cnt#1 )
   (byte[]) lines_y#1 ← phi( lines/(byte[]) lines_y#2 lines::@3/(byte[]) lines_y#3 )
   (byte) lines::l#2 ← phi( lines/(byte) lines::l#0 lines::@3/(byte) lines::l#1 )
@@ -3876,11 +5822,11 @@ lines::@1: scope:[lines]  from lines lines::@3
   call line param-assignment
   to:lines::@3
 lines::@3: scope:[lines]  from lines::@1
-  (byte[]) plot_bit#29 ← phi( lines::@1/(byte[]) plot_bit#27 )
-  (byte[]) plot_ylo#30 ← phi( lines::@1/(byte[]) plot_ylo#27 )
-  (byte[]) plot_yhi#30 ← phi( lines::@1/(byte[]) plot_yhi#27 )
-  (byte[]) plot_xlo#29 ← phi( lines::@1/(byte[]) plot_xlo#27 )
-  (byte[]) plot_xhi#29 ← phi( lines::@1/(byte[]) plot_xhi#27 )
+  (byte[]) plot_bit#46 ← phi( lines::@1/(byte[]) plot_bit#44 )
+  (byte[]) plot_ylo#50 ← phi( lines::@1/(byte[]) plot_ylo#48 )
+  (byte[]) plot_yhi#50 ← phi( lines::@1/(byte[]) plot_yhi#48 )
+  (byte[]) plot_xlo#46 ← phi( lines::@1/(byte[]) plot_xlo#44 )
+  (byte[]) plot_xhi#46 ← phi( lines::@1/(byte[]) plot_xhi#44 )
   (byte[]) lines_y#3 ← phi( lines::@1/(byte[]) lines_y#1 )
   (byte[]) lines_x#3 ← phi( lines::@1/(byte[]) lines_x#1 )
   (byte) lines_cnt#1 ← phi( lines::@1/(byte) lines_cnt#2 )
@@ -3893,296 +5839,621 @@ lines::@return: scope:[lines]  from lines::@3
   return 
   to:@return
 line: scope:[line]  from lines::@1
-  (byte[]) plot_bit#22 ← phi( lines::@1/(byte[]) plot_bit#27 )
-  (byte[]) plot_ylo#21 ← phi( lines::@1/(byte[]) plot_ylo#27 )
-  (byte[]) plot_yhi#21 ← phi( lines::@1/(byte[]) plot_yhi#27 )
-  (byte[]) plot_xlo#22 ← phi( lines::@1/(byte[]) plot_xlo#27 )
-  (byte[]) plot_xhi#22 ← phi( lines::@1/(byte[]) plot_xhi#27 )
-  (byte) line::y1#8 ← phi( lines::@1/(byte) line::y1#0 )
-  (byte) line::y0#9 ← phi( lines::@1/(byte) line::y0#0 )
+  (byte[]) plot_bit#43 ← phi( lines::@1/(byte[]) plot_bit#44 )
+  (byte[]) plot_ylo#46 ← phi( lines::@1/(byte[]) plot_ylo#48 )
+  (byte[]) plot_yhi#46 ← phi( lines::@1/(byte[]) plot_yhi#48 )
+  (byte[]) plot_xlo#43 ← phi( lines::@1/(byte[]) plot_xlo#44 )
+  (byte[]) plot_xhi#43 ← phi( lines::@1/(byte[]) plot_xhi#44 )
+  (byte) line::y1#13 ← phi( lines::@1/(byte) line::y1#0 )
+  (byte) line::y0#13 ← phi( lines::@1/(byte) line::y0#0 )
   (byte) line::x1#1 ← phi( lines::@1/(byte) line::x1#0 )
   (byte) line::x0#1 ← phi( lines::@1/(byte) line::x0#0 )
   (boolean~) line::$1 ← (byte) line::x0#1 >= (byte) line::x1#1
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte[]) plot_bit#16 ← phi( line/(byte[]) plot_bit#22 )
-  (byte[]) plot_ylo#16 ← phi( line/(byte[]) plot_ylo#21 )
-  (byte[]) plot_yhi#16 ← phi( line/(byte[]) plot_yhi#21 )
-  (byte[]) plot_xlo#16 ← phi( line/(byte[]) plot_xlo#22 )
-  (byte[]) plot_xhi#16 ← phi( line/(byte[]) plot_xhi#22 )
-  (byte) line::y1#1 ← phi( line/(byte) line::y1#8 )
-  (byte) line::y0#1 ← phi( line/(byte) line::y0#9 )
-  (byte) line::x0#2 ← phi( line/(byte) line::x0#1 )
-  (byte) line::x1#2 ← phi( line/(byte) line::x1#1 )
-  (byte~) line::$13 ← (byte) line::x1#2 - (byte) line::x0#2
-  (byte) line::xd#0 ← (byte~) line::$13
-  (boolean~) line::$15 ← (byte) line::y0#1 >= (byte) line::y1#1
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
-  (byte[]) plot_bit#14 ← phi( line/(byte[]) plot_bit#22 )
-  (byte[]) plot_ylo#14 ← phi( line/(byte[]) plot_ylo#21 )
-  (byte[]) plot_yhi#14 ← phi( line/(byte[]) plot_yhi#21 )
-  (byte[]) plot_xlo#14 ← phi( line/(byte[]) plot_xlo#22 )
-  (byte[]) plot_xhi#14 ← phi( line/(byte[]) plot_xhi#22 )
-  (byte) line::y1#2 ← phi( line/(byte) line::y1#8 )
-  (byte) line::y0#2 ← phi( line/(byte) line::y0#9 )
+line::@1: scope:[line]  from line
+  (byte[]) plot_bit#42 ← phi( line/(byte[]) plot_bit#43 )
+  (byte[]) plot_ylo#43 ← phi( line/(byte[]) plot_ylo#46 )
+  (byte[]) plot_yhi#43 ← phi( line/(byte[]) plot_yhi#46 )
+  (byte[]) plot_xlo#42 ← phi( line/(byte[]) plot_xlo#43 )
+  (byte[]) plot_xhi#42 ← phi( line/(byte[]) plot_xhi#43 )
+  (byte) line::y1#1 ← phi( line/(byte) line::y1#13 )
+  (byte) line::y0#1 ← phi( line/(byte) line::y0#13 )
+  (byte) line::x1#2 ← phi( line/(byte) line::x1#1 )
+  (byte) line::x0#2 ← phi( line/(byte) line::x0#1 )
+  (byte~) line::$15 ← (byte) line::x0#2 - (byte) line::x1#2
+  (byte) line::xd#0 ← (byte~) line::$15
+  (boolean~) line::$17 ← (byte) line::y0#1 >= (byte) line::y1#1
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
+  (byte[]) plot_bit#41 ← phi( line/(byte[]) plot_bit#43 )
+  (byte[]) plot_ylo#42 ← phi( line/(byte[]) plot_ylo#46 )
+  (byte[]) plot_yhi#42 ← phi( line/(byte[]) plot_yhi#46 )
+  (byte[]) plot_xlo#41 ← phi( line/(byte[]) plot_xlo#43 )
+  (byte[]) plot_xhi#41 ← phi( line/(byte[]) plot_xhi#43 )
+  (byte) line::y1#2 ← phi( line/(byte) line::y1#13 )
+  (byte) line::y0#2 ← phi( line/(byte) line::y0#13 )
   (byte) line::x0#3 ← phi( line/(byte) line::x0#1 )
   (byte) line::x1#3 ← phi( line/(byte) line::x1#1 )
   (byte~) line::$2 ← (byte) line::x1#3 - (byte) line::x0#3
   (byte) line::xd#1 ← (byte~) line::$2
   (boolean~) line::$4 ← (byte) line::y0#2 >= (byte) line::y1#2
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte[]) plot_bit#6 ← phi( line::@9/(byte[]) plot_bit#14 )
-  (byte[]) plot_ylo#6 ← phi( line::@9/(byte[]) plot_ylo#14 )
-  (byte[]) plot_yhi#6 ← phi( line::@9/(byte[]) plot_yhi#14 )
-  (byte[]) plot_xlo#6 ← phi( line::@9/(byte[]) plot_xlo#14 )
-  (byte[]) plot_xhi#6 ← phi( line::@9/(byte[]) plot_xhi#14 )
-  (byte) line::y1#9 ← phi( line::@9/(byte) line::y1#2 )
-  (byte) line::x1#9 ← phi( line::@9/(byte) line::x1#3 )
-  (byte) line::y0#3 ← phi( line::@9/(byte) line::y0#2 )
-  (byte) line::x0#4 ← phi( line::@9/(byte) line::x0#3 )
-  (byte) plot::x#0 ← (byte) line::x0#4
-  (byte) plot::y#0 ← (byte) line::y0#3
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte[]) plot_bit#4 ← phi( line::@2/(byte[]) plot_bit#6 )
-  (byte[]) plot_ylo#4 ← phi( line::@2/(byte[]) plot_ylo#6 )
-  (byte[]) plot_yhi#4 ← phi( line::@2/(byte[]) plot_yhi#6 )
-  (byte[]) plot_xlo#4 ← phi( line::@2/(byte[]) plot_xlo#6 )
-  (byte[]) plot_xhi#4 ← phi( line::@2/(byte[]) plot_xhi#6 )
-  (byte) line::y1#3 ← phi( line::@2/(byte) line::y1#9 )
-  (byte) line::x1#4 ← phi( line::@2/(byte) line::x1#9 )
-  (byte) plot::x#1 ← (byte) line::x1#4
-  (byte) plot::y#1 ← (byte) line::y1#3
-  call plot param-assignment
-  to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte[]) plot_bit#15 ← phi( line::@9/(byte[]) plot_bit#14 )
-  (byte[]) plot_ylo#15 ← phi( line::@9/(byte[]) plot_ylo#14 )
-  (byte[]) plot_yhi#15 ← phi( line::@9/(byte[]) plot_yhi#14 )
-  (byte[]) plot_xlo#15 ← phi( line::@9/(byte[]) plot_xlo#14 )
-  (byte[]) plot_xhi#15 ← phi( line::@9/(byte[]) plot_xhi#14 )
-  (byte) line::x1#11 ← phi( line::@9/(byte) line::x1#3 )
-  (byte) line::x0#9 ← phi( line::@9/(byte) line::x0#3 )
-  (byte) line::xd#2 ← phi( line::@9/(byte) line::xd#1 )
-  (byte) line::y0#4 ← phi( line::@9/(byte) line::y0#2 )
-  (byte) line::y1#4 ← phi( line::@9/(byte) line::y1#2 )
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte[]) plot_bit#38 ← phi( line::@15/(byte[]) plot_bit#41 )
+  (byte[]) plot_ylo#38 ← phi( line::@15/(byte[]) plot_ylo#42 )
+  (byte[]) plot_yhi#38 ← phi( line::@15/(byte[]) plot_yhi#42 )
+  (byte[]) plot_xlo#38 ← phi( line::@15/(byte[]) plot_xlo#41 )
+  (byte[]) plot_xhi#38 ← phi( line::@15/(byte[]) plot_xhi#41 )
+  (byte) line::x0#11 ← phi( line::@15/(byte) line::x0#3 )
+  (byte) line::x1#11 ← phi( line::@15/(byte) line::x1#3 )
+  (byte) line::xd#2 ← phi( line::@15/(byte) line::xd#1 )
+  (byte) line::y1#3 ← phi( line::@15/(byte) line::y1#2 )
+  (byte) line::y0#3 ← phi( line::@15/(byte) line::y0#2 )
+  (byte~) line::$10 ← (byte) line::y0#3 - (byte) line::y1#3
+  (byte) line::yd#0 ← (byte~) line::$10
+  (boolean~) line::$12 ← (byte) line::yd#0 >= (byte) line::xd#2
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte[]) plot_bit#37 ← phi( line::@15/(byte[]) plot_bit#41 )
+  (byte[]) plot_ylo#37 ← phi( line::@15/(byte[]) plot_ylo#42 )
+  (byte[]) plot_yhi#37 ← phi( line::@15/(byte[]) plot_yhi#42 )
+  (byte[]) plot_xlo#37 ← phi( line::@15/(byte[]) plot_xlo#41 )
+  (byte[]) plot_xhi#37 ← phi( line::@15/(byte[]) plot_xhi#41 )
+  (byte) line::x1#10 ← phi( line::@15/(byte) line::x1#3 )
+  (byte) line::x0#10 ← phi( line::@15/(byte) line::x0#3 )
+  (byte) line::xd#3 ← phi( line::@15/(byte) line::xd#1 )
+  (byte) line::y0#4 ← phi( line::@15/(byte) line::y0#2 )
+  (byte) line::y1#4 ← phi( line::@15/(byte) line::y1#2 )
   (byte~) line::$5 ← (byte) line::y1#4 - (byte) line::y0#4
-  (byte) line::yd#0 ← (byte~) line::$5
-  (boolean~) line::$7 ← (byte) line::yd#0 >= (byte) line::xd#2
+  (byte) line::yd#1 ← (byte~) line::$5
+  (boolean~) line::$7 ← (byte) line::yd#1 >= (byte) line::xd#3
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte[]) plot_bit#9 ← phi( line::@10/(byte[]) plot_bit#15 )
-  (byte[]) plot_ylo#9 ← phi( line::@10/(byte[]) plot_ylo#15 )
-  (byte[]) plot_yhi#9 ← phi( line::@10/(byte[]) plot_yhi#15 )
-  (byte[]) plot_xlo#9 ← phi( line::@10/(byte[]) plot_xlo#15 )
-  (byte[]) plot_xhi#9 ← phi( line::@10/(byte[]) plot_xhi#15 )
-  (byte) line::y1#10 ← phi( line::@10/(byte) line::y1#4 )
-  (byte) line::x1#10 ← phi( line::@10/(byte) line::x1#11 )
-  (byte) line::y0#5 ← phi( line::@10/(byte) line::y0#4 )
-  (byte) line::x0#5 ← phi( line::@10/(byte) line::x0#9 )
-  (byte) plot::x#2 ← (byte) line::x0#5
-  (byte) plot::y#2 ← (byte) line::y0#5
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte[]) plot_bit#5 ← phi( line::@3/(byte[]) plot_bit#9 )
-  (byte[]) plot_ylo#5 ← phi( line::@3/(byte[]) plot_ylo#9 )
-  (byte[]) plot_yhi#5 ← phi( line::@3/(byte[]) plot_yhi#9 )
-  (byte[]) plot_xlo#5 ← phi( line::@3/(byte[]) plot_xlo#9 )
-  (byte[]) plot_xhi#5 ← phi( line::@3/(byte[]) plot_xhi#9 )
-  (byte) line::y1#5 ← phi( line::@3/(byte) line::y1#10 )
-  (byte) line::x1#5 ← phi( line::@3/(byte) line::x1#10 )
-  (byte) plot::x#3 ← (byte) line::x1#5
-  (byte) plot::y#3 ← (byte) line::y1#5
-  call plot param-assignment
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (byte[]) plot_bit#29 ← phi( line::@16/(byte[]) plot_bit#37 )
+  (byte[]) plot_ylo#28 ← phi( line::@16/(byte[]) plot_ylo#37 )
+  (byte[]) plot_yhi#28 ← phi( line::@16/(byte[]) plot_yhi#37 )
+  (byte[]) plot_xlo#29 ← phi( line::@16/(byte[]) plot_xlo#37 )
+  (byte[]) plot_xhi#29 ← phi( line::@16/(byte[]) plot_xhi#37 )
+  (byte) line::xd#4 ← phi( line::@16/(byte) line::xd#3 )
+  (byte) line::yd#4 ← phi( line::@16/(byte) line::yd#1 )
+  (byte) line::y1#5 ← phi( line::@16/(byte) line::y1#4 )
+  (byte) line::x0#4 ← phi( line::@16/(byte) line::x0#10 )
+  (byte) line::y0#5 ← phi( line::@16/(byte) line::y0#4 )
+  (byte) line_ydxi::y#0 ← (byte) line::y0#5
+  (byte) line_ydxi::x#0 ← (byte) line::x0#4
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#5
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#4
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#4
+  call line_ydxi param-assignment
   to:line::@return
-line::@11: scope:[line]  from line::@10
-  (byte[]) plot_bit#23 ← phi( line::@10/(byte[]) plot_bit#15 )
-  (byte[]) plot_ylo#22 ← phi( line::@10/(byte[]) plot_ylo#15 )
-  (byte[]) plot_yhi#22 ← phi( line::@10/(byte[]) plot_yhi#15 )
-  (byte[]) plot_xlo#23 ← phi( line::@10/(byte[]) plot_xlo#15 )
-  (byte[]) plot_xhi#23 ← phi( line::@10/(byte[]) plot_xhi#15 )
-  (byte) line::yd#1 ← phi( line::@10/(byte) line::yd#0 )
-  (byte) line::xd#3 ← phi( line::@10/(byte) line::xd#2 )
-  (byte) line::x1#6 ← phi( line::@10/(byte) line::x1#11 )
-  (byte) line::y0#6 ← phi( line::@10/(byte) line::y0#4 )
-  (byte) line::x0#6 ← phi( line::@10/(byte) line::x0#9 )
-  (byte) line_xdyi::x#0 ← (byte) line::x0#6
+line::@17: scope:[line]  from line::@16
+  (byte[]) plot_bit#20 ← phi( line::@16/(byte[]) plot_bit#37 )
+  (byte[]) plot_ylo#19 ← phi( line::@16/(byte[]) plot_ylo#37 )
+  (byte[]) plot_yhi#19 ← phi( line::@16/(byte[]) plot_yhi#37 )
+  (byte[]) plot_xlo#20 ← phi( line::@16/(byte[]) plot_xlo#37 )
+  (byte[]) plot_xhi#20 ← phi( line::@16/(byte[]) plot_xhi#37 )
+  (byte) line::yd#5 ← phi( line::@16/(byte) line::yd#1 )
+  (byte) line::xd#5 ← phi( line::@16/(byte) line::xd#3 )
+  (byte) line::x1#4 ← phi( line::@16/(byte) line::x1#10 )
+  (byte) line::y0#6 ← phi( line::@16/(byte) line::y0#4 )
+  (byte) line::x0#5 ← phi( line::@16/(byte) line::x0#10 )
+  (byte) line_xdyi::x#0 ← (byte) line::x0#5
   (byte) line_xdyi::y#0 ← (byte) line::y0#6
-  (byte) line_xdyi::x1#0 ← (byte) line::x1#6
-  (byte) line_xdyi::xd#0 ← (byte) line::xd#3
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
+  (byte) line_xdyi::x1#0 ← (byte) line::x1#4
+  (byte) line_xdyi::xd#0 ← (byte) line::xd#5
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#5
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte[]) plot_bit#10 ← phi( line::@1/(byte[]) plot_bit#16 )
-  (byte[]) plot_ylo#10 ← phi( line::@1/(byte[]) plot_ylo#16 )
-  (byte[]) plot_yhi#10 ← phi( line::@1/(byte[]) plot_yhi#16 )
-  (byte[]) plot_xlo#10 ← phi( line::@1/(byte[]) plot_xlo#16 )
-  (byte[]) plot_xhi#10 ← phi( line::@1/(byte[]) plot_xhi#16 )
-  (byte) line::y1#11 ← phi( line::@1/(byte) line::y1#1 )
-  (byte) line::x1#12 ← phi( line::@1/(byte) line::x1#2 )
-  (byte) line::y0#7 ← phi( line::@1/(byte) line::y0#1 )
-  (byte) line::x0#7 ← phi( line::@1/(byte) line::x0#2 )
-  (byte) plot::x#4 ← (byte) line::x0#7
-  (byte) plot::y#4 ← (byte) line::y0#7
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte[]) plot_bit#7 ← phi( line::@7/(byte[]) plot_bit#10 )
-  (byte[]) plot_ylo#7 ← phi( line::@7/(byte[]) plot_ylo#10 )
-  (byte[]) plot_yhi#7 ← phi( line::@7/(byte[]) plot_yhi#10 )
-  (byte[]) plot_xlo#7 ← phi( line::@7/(byte[]) plot_xlo#10 )
-  (byte[]) plot_xhi#7 ← phi( line::@7/(byte[]) plot_xhi#10 )
-  (byte) line::y1#6 ← phi( line::@7/(byte) line::y1#11 )
-  (byte) line::x1#7 ← phi( line::@7/(byte) line::x1#12 )
-  (byte) plot::x#5 ← (byte) line::x1#7
-  (byte) plot::y#5 ← (byte) line::y1#6
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte[]) plot_bit#33 ← phi( line::@2/(byte[]) plot_bit#38 )
+  (byte[]) plot_ylo#32 ← phi( line::@2/(byte[]) plot_ylo#38 )
+  (byte[]) plot_yhi#32 ← phi( line::@2/(byte[]) plot_yhi#38 )
+  (byte[]) plot_xlo#33 ← phi( line::@2/(byte[]) plot_xlo#38 )
+  (byte[]) plot_xhi#33 ← phi( line::@2/(byte[]) plot_xhi#38 )
+  (byte) line::xd#6 ← phi( line::@2/(byte) line::xd#2 )
+  (byte) line::yd#6 ← phi( line::@2/(byte) line::yd#0 )
+  (byte) line::y0#7 ← phi( line::@2/(byte) line::y0#3 )
+  (byte) line::x1#5 ← phi( line::@2/(byte) line::x1#11 )
+  (byte) line::y1#6 ← phi( line::@2/(byte) line::y1#3 )
+  (byte) line_ydxd::y#0 ← (byte) line::y1#6
+  (byte) line_ydxd::x#0 ← (byte) line::x1#5
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#7
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#6
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#6
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte[]) plot_bit#3 ← phi( line::@1/(byte[]) plot_bit#16 )
-  (byte[]) plot_ylo#3 ← phi( line::@1/(byte[]) plot_ylo#16 )
-  (byte[]) plot_yhi#3 ← phi( line::@1/(byte[]) plot_yhi#16 )
-  (byte[]) plot_xlo#3 ← phi( line::@1/(byte[]) plot_xlo#16 )
-  (byte[]) plot_xhi#3 ← phi( line::@1/(byte[]) plot_xhi#16 )
-  (byte) line::y1#12 ← phi( line::@1/(byte) line::y1#1 )
+line::@20: scope:[line]  from line::@2
+  (byte[]) plot_bit#24 ← phi( line::@2/(byte[]) plot_bit#38 )
+  (byte[]) plot_ylo#23 ← phi( line::@2/(byte[]) plot_ylo#38 )
+  (byte[]) plot_yhi#23 ← phi( line::@2/(byte[]) plot_yhi#38 )
+  (byte[]) plot_xlo#24 ← phi( line::@2/(byte[]) plot_xlo#38 )
+  (byte[]) plot_xhi#24 ← phi( line::@2/(byte[]) plot_xhi#38 )
+  (byte) line::yd#7 ← phi( line::@2/(byte) line::yd#0 )
+  (byte) line::xd#7 ← phi( line::@2/(byte) line::xd#2 )
+  (byte) line::x1#6 ← phi( line::@2/(byte) line::x1#11 )
+  (byte) line::y0#8 ← phi( line::@2/(byte) line::y0#3 )
+  (byte) line::x0#6 ← phi( line::@2/(byte) line::x0#11 )
+  (byte) line_xdyd::x#0 ← (byte) line::x0#6
+  (byte) line_xdyd::y#0 ← (byte) line::y0#8
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#6
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#7
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#7
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte[]) plot_bit#40 ← phi( line::@1/(byte[]) plot_bit#42 )
+  (byte[]) plot_ylo#40 ← phi( line::@1/(byte[]) plot_ylo#43 )
+  (byte[]) plot_yhi#40 ← phi( line::@1/(byte[]) plot_yhi#43 )
+  (byte[]) plot_xlo#40 ← phi( line::@1/(byte[]) plot_xlo#42 )
+  (byte[]) plot_xhi#40 ← phi( line::@1/(byte[]) plot_xhi#42 )
+  (byte) line::x0#13 ← phi( line::@1/(byte) line::x0#2 )
   (byte) line::x1#13 ← phi( line::@1/(byte) line::x1#2 )
-  (byte) line::y0#8 ← phi( line::@1/(byte) line::y0#1 )
-  (byte) line::x0#8 ← phi( line::@1/(byte) line::x0#2 )
-  (byte) plot::x#6 ← (byte) line::x0#8
-  (byte) plot::y#6 ← (byte) line::y0#8
-  call plot param-assignment
+  (byte) line::xd#8 ← phi( line::@1/(byte) line::xd#0 )
+  (byte) line::y1#7 ← phi( line::@1/(byte) line::y1#1 )
+  (byte) line::y0#9 ← phi( line::@1/(byte) line::y0#1 )
+  (byte~) line::$23 ← (byte) line::y0#9 - (byte) line::y1#7
+  (byte) line::yd#2 ← (byte~) line::$23
+  (boolean~) line::$25 ← (byte) line::yd#2 >= (byte) line::xd#8
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte[]) plot_bit#39 ← phi( line::@1/(byte[]) plot_bit#42 )
+  (byte[]) plot_ylo#39 ← phi( line::@1/(byte[]) plot_ylo#43 )
+  (byte[]) plot_yhi#39 ← phi( line::@1/(byte[]) plot_yhi#43 )
+  (byte[]) plot_xlo#39 ← phi( line::@1/(byte[]) plot_xlo#42 )
+  (byte[]) plot_xhi#39 ← phi( line::@1/(byte[]) plot_xhi#42 )
+  (byte) line::x1#12 ← phi( line::@1/(byte) line::x1#2 )
+  (byte) line::x0#12 ← phi( line::@1/(byte) line::x0#2 )
+  (byte) line::xd#9 ← phi( line::@1/(byte) line::xd#0 )
+  (byte) line::y0#10 ← phi( line::@1/(byte) line::y0#1 )
+  (byte) line::y1#8 ← phi( line::@1/(byte) line::y1#1 )
+  (byte~) line::$18 ← (byte) line::y1#8 - (byte) line::y0#10
+  (byte) line::yd#3 ← (byte~) line::$18
+  (boolean~) line::$20 ← (byte) line::yd#3 >= (byte) line::xd#9
+  if((boolean~) line::$20) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte[]) plot_bit#8 ← phi( line::@15/(byte[]) plot_bit#3 )
-  (byte[]) plot_ylo#8 ← phi( line::@15/(byte[]) plot_ylo#3 )
-  (byte[]) plot_yhi#8 ← phi( line::@15/(byte[]) plot_yhi#3 )
-  (byte[]) plot_xlo#8 ← phi( line::@15/(byte[]) plot_xlo#3 )
-  (byte[]) plot_xhi#8 ← phi( line::@15/(byte[]) plot_xhi#3 )
-  (byte) line::y1#7 ← phi( line::@15/(byte) line::y1#12 )
-  (byte) line::x1#8 ← phi( line::@15/(byte) line::x1#13 )
-  (byte) plot::x#7 ← (byte) line::x1#8
-  (byte) plot::y#7 ← (byte) line::y1#7
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte[]) plot_bit#32 ← phi( line::@23/(byte[]) plot_bit#39 )
+  (byte[]) plot_ylo#31 ← phi( line::@23/(byte[]) plot_ylo#39 )
+  (byte[]) plot_yhi#31 ← phi( line::@23/(byte[]) plot_yhi#39 )
+  (byte[]) plot_xlo#32 ← phi( line::@23/(byte[]) plot_xlo#39 )
+  (byte[]) plot_xhi#32 ← phi( line::@23/(byte[]) plot_xhi#39 )
+  (byte) line::xd#10 ← phi( line::@23/(byte) line::xd#9 )
+  (byte) line::yd#8 ← phi( line::@23/(byte) line::yd#3 )
+  (byte) line::y1#9 ← phi( line::@23/(byte) line::y1#8 )
+  (byte) line::x0#7 ← phi( line::@23/(byte) line::x0#12 )
+  (byte) line::y0#11 ← phi( line::@23/(byte) line::y0#10 )
+  (byte) line_ydxd::y#1 ← (byte) line::y0#11
+  (byte) line_ydxd::x#1 ← (byte) line::x0#7
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#9
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#8
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#10
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte[]) plot_bit#25 ← phi( line::@23/(byte[]) plot_bit#39 )
+  (byte[]) plot_ylo#24 ← phi( line::@23/(byte[]) plot_ylo#39 )
+  (byte[]) plot_yhi#24 ← phi( line::@23/(byte[]) plot_yhi#39 )
+  (byte[]) plot_xlo#25 ← phi( line::@23/(byte[]) plot_xlo#39 )
+  (byte[]) plot_xhi#25 ← phi( line::@23/(byte[]) plot_xhi#39 )
+  (byte) line::yd#9 ← phi( line::@23/(byte) line::yd#3 )
+  (byte) line::xd#11 ← phi( line::@23/(byte) line::xd#9 )
+  (byte) line::x0#8 ← phi( line::@23/(byte) line::x0#12 )
+  (byte) line::y1#10 ← phi( line::@23/(byte) line::y1#8 )
+  (byte) line::x1#7 ← phi( line::@23/(byte) line::x1#12 )
+  (byte) line_xdyd::x#1 ← (byte) line::x1#7
+  (byte) line_xdyd::y#1 ← (byte) line::y1#10
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#8
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#11
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#9
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte[]) plot_bit#28 ← phi( line::@9/(byte[]) plot_bit#40 )
+  (byte[]) plot_ylo#27 ← phi( line::@9/(byte[]) plot_ylo#40 )
+  (byte[]) plot_yhi#27 ← phi( line::@9/(byte[]) plot_yhi#40 )
+  (byte[]) plot_xlo#28 ← phi( line::@9/(byte[]) plot_xlo#40 )
+  (byte[]) plot_xhi#28 ← phi( line::@9/(byte[]) plot_xhi#40 )
+  (byte) line::xd#12 ← phi( line::@9/(byte) line::xd#8 )
+  (byte) line::yd#10 ← phi( line::@9/(byte) line::yd#2 )
+  (byte) line::y0#12 ← phi( line::@9/(byte) line::y0#9 )
+  (byte) line::x1#8 ← phi( line::@9/(byte) line::x1#13 )
+  (byte) line::y1#11 ← phi( line::@9/(byte) line::y1#7 )
+  (byte) line_ydxi::y#1 ← (byte) line::y1#11
+  (byte) line_ydxi::x#1 ← (byte) line::x1#8
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#12
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#12
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte[]) plot_bit#21 ← phi( line::@9/(byte[]) plot_bit#40 )
+  (byte[]) plot_ylo#20 ← phi( line::@9/(byte[]) plot_ylo#40 )
+  (byte[]) plot_yhi#20 ← phi( line::@9/(byte[]) plot_yhi#40 )
+  (byte[]) plot_xlo#21 ← phi( line::@9/(byte[]) plot_xlo#40 )
+  (byte[]) plot_xhi#21 ← phi( line::@9/(byte[]) plot_xhi#40 )
+  (byte) line::yd#11 ← phi( line::@9/(byte) line::yd#2 )
+  (byte) line::xd#13 ← phi( line::@9/(byte) line::xd#8 )
+  (byte) line::x0#9 ← phi( line::@9/(byte) line::x0#13 )
+  (byte) line::y1#12 ← phi( line::@9/(byte) line::y1#7 )
+  (byte) line::x1#9 ← phi( line::@9/(byte) line::x1#13 )
+  (byte) line_xdyi::x#1 ← (byte) line::x1#9
+  (byte) line_xdyi::y#1 ← (byte) line::y1#12
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#9
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#13
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#11
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::x1#5 ← phi( line::@11/(byte) line_xdyi::x1#0 )
-  (byte[]) plot_bit#17 ← phi( line::@11/(byte[]) plot_bit#23 )
-  (byte[]) plot_ylo#17 ← phi( line::@11/(byte[]) plot_ylo#22 )
-  (byte[]) plot_yhi#17 ← phi( line::@11/(byte[]) plot_yhi#22 )
-  (byte[]) plot_xlo#17 ← phi( line::@11/(byte[]) plot_xlo#23 )
-  (byte[]) plot_xhi#17 ← phi( line::@11/(byte[]) plot_xhi#23 )
-  (byte) line_xdyi::xd#4 ← phi( line::@11/(byte) line_xdyi::xd#0 )
-  (byte) line_xdyi::y#4 ← phi( line::@11/(byte) line_xdyi::y#0 )
-  (byte) line_xdyi::x#5 ← phi( line::@11/(byte) line_xdyi::x#0 )
-  (byte) line_xdyi::yd#1 ← phi( line::@11/(byte) line_xdyi::yd#0 )
-  (byte~) line_xdyi::$0 ← (byte) line_xdyi::yd#1 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte[]) plot_bit#9 ← phi( line::@17/(byte[]) plot_bit#20 line::@27/(byte[]) plot_bit#21 )
+  (byte[]) plot_ylo#9 ← phi( line::@17/(byte[]) plot_ylo#19 line::@27/(byte[]) plot_ylo#20 )
+  (byte[]) plot_yhi#9 ← phi( line::@17/(byte[]) plot_yhi#19 line::@27/(byte[]) plot_yhi#20 )
+  (byte[]) plot_xlo#9 ← phi( line::@17/(byte[]) plot_xlo#20 line::@27/(byte[]) plot_xlo#21 )
+  (byte[]) plot_xhi#9 ← phi( line::@17/(byte[]) plot_xhi#20 line::@27/(byte[]) plot_xhi#21 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte~) line_xdyi::$0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   (byte) line_xdyi::e#0 ← (byte~) line_xdyi::$0
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
-  (byte) line_xdyi::x1#4 ← phi( line_xdyi/(byte) line_xdyi::x1#5 line_xdyi::@2/(byte) line_xdyi::x1#1 )
-  (byte[]) plot_bit#11 ← phi( line_xdyi/(byte[]) plot_bit#17 line_xdyi::@2/(byte[]) plot_bit#18 )
-  (byte[]) plot_ylo#11 ← phi( line_xdyi/(byte[]) plot_ylo#17 line_xdyi::@2/(byte[]) plot_ylo#18 )
-  (byte[]) plot_yhi#11 ← phi( line_xdyi/(byte[]) plot_yhi#17 line_xdyi::@2/(byte[]) plot_yhi#18 )
-  (byte[]) plot_xlo#11 ← phi( line_xdyi/(byte[]) plot_xlo#17 line_xdyi::@2/(byte[]) plot_xlo#18 )
-  (byte[]) plot_xhi#11 ← phi( line_xdyi/(byte[]) plot_xhi#17 line_xdyi::@2/(byte[]) plot_xhi#18 )
-  (byte) line_xdyi::xd#3 ← phi( line_xdyi/(byte) line_xdyi::xd#4 line_xdyi::@2/(byte) line_xdyi::xd#5 )
-  (byte) line_xdyi::yd#3 ← phi( line_xdyi/(byte) line_xdyi::yd#1 line_xdyi::@2/(byte) line_xdyi::yd#4 )
+  (byte) line_xdyi::x1#5 ← phi( line_xdyi/(byte) line_xdyi::x1#6 line_xdyi::@2/(byte) line_xdyi::x1#2 )
+  (byte[]) plot_bit#4 ← phi( line_xdyi/(byte[]) plot_bit#9 line_xdyi::@2/(byte[]) plot_bit#10 )
+  (byte[]) plot_ylo#4 ← phi( line_xdyi/(byte[]) plot_ylo#9 line_xdyi::@2/(byte[]) plot_ylo#10 )
+  (byte[]) plot_yhi#4 ← phi( line_xdyi/(byte[]) plot_yhi#9 line_xdyi::@2/(byte[]) plot_yhi#10 )
+  (byte[]) plot_xlo#4 ← phi( line_xdyi/(byte[]) plot_xlo#9 line_xdyi::@2/(byte[]) plot_xlo#10 )
+  (byte[]) plot_xhi#4 ← phi( line_xdyi/(byte[]) plot_xhi#9 line_xdyi::@2/(byte[]) plot_xhi#10 )
+  (byte) line_xdyi::xd#4 ← phi( line_xdyi/(byte) line_xdyi::xd#5 line_xdyi::@2/(byte) line_xdyi::xd#6 )
+  (byte) line_xdyi::yd#4 ← phi( line_xdyi/(byte) line_xdyi::yd#2 line_xdyi::@2/(byte) line_xdyi::yd#5 )
   (byte) line_xdyi::e#5 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#4 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#5 line_xdyi::@2/(byte) line_xdyi::x#4 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#5 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte[]) plot_bit#25 ← phi( line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#24 ← phi( line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte[]) plot_yhi#24 ← phi( line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#25 ← phi( line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte[]) plot_xhi#25 ← phi( line_xdyi::@1/(byte[]) plot_xhi#11 )
-  (byte) line_xdyi::y#6 ← phi( line_xdyi::@1/(byte) line_xdyi::y#2 )
-  (byte) line_xdyi::x1#3 ← phi( line_xdyi::@1/(byte) line_xdyi::x1#4 )
-  (byte) line_xdyi::xd#1 ← phi( line_xdyi::@1/(byte) line_xdyi::xd#3 )
-  (byte) line_xdyi::yd#2 ← phi( line_xdyi::@1/(byte) line_xdyi::yd#3 )
+  (byte[]) plot_bit#23 ← phi( line_xdyi::@1/(byte[]) plot_bit#4 )
+  (byte[]) plot_ylo#22 ← phi( line_xdyi::@1/(byte[]) plot_ylo#4 )
+  (byte[]) plot_yhi#22 ← phi( line_xdyi::@1/(byte[]) plot_yhi#4 )
+  (byte[]) plot_xlo#23 ← phi( line_xdyi::@1/(byte[]) plot_xlo#4 )
+  (byte[]) plot_xhi#23 ← phi( line_xdyi::@1/(byte[]) plot_xhi#4 )
+  (byte) line_xdyi::y#7 ← phi( line_xdyi::@1/(byte) line_xdyi::y#3 )
+  (byte) line_xdyi::x1#4 ← phi( line_xdyi::@1/(byte) line_xdyi::x1#5 )
+  (byte) line_xdyi::xd#2 ← phi( line_xdyi::@1/(byte) line_xdyi::xd#4 )
+  (byte) line_xdyi::yd#3 ← phi( line_xdyi::@1/(byte) line_xdyi::yd#4 )
   (byte) line_xdyi::e#3 ← phi( line_xdyi::@1/(byte) line_xdyi::e#5 )
-  (byte) line_xdyi::x#3 ← phi( line_xdyi::@1/(byte) line_xdyi::x#2 )
-  (byte~) line_xdyi::$2 ← (byte) line_xdyi::x#3 + (byte) 1
-  (byte) line_xdyi::x#1 ← (byte~) line_xdyi::$2
-  (byte~) line_xdyi::$3 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  (byte) line_xdyi::x#4 ← phi( line_xdyi::@1/(byte) line_xdyi::x#3 )
+  (byte~) line_xdyi::$2 ← (byte) line_xdyi::x#4 + (byte) 1
+  (byte) line_xdyi::x#2 ← (byte~) line_xdyi::$2
+  (byte~) line_xdyi::$3 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#3
   (byte) line_xdyi::e#1 ← (byte~) line_xdyi::$3
-  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#1 >= (byte) line_xdyi::e#1
+  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#2 >= (byte) line_xdyi::e#1
   if((boolean~) line_xdyi::$5) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
-  (byte[]) plot_bit#18 ← phi( line_xdyi::@3/(byte[]) plot_bit#24 line_xdyi::@5/(byte[]) plot_bit#25 )
-  (byte[]) plot_ylo#18 ← phi( line_xdyi::@3/(byte[]) plot_ylo#23 line_xdyi::@5/(byte[]) plot_ylo#24 )
-  (byte[]) plot_yhi#18 ← phi( line_xdyi::@3/(byte[]) plot_yhi#23 line_xdyi::@5/(byte[]) plot_yhi#24 )
-  (byte[]) plot_xlo#18 ← phi( line_xdyi::@3/(byte[]) plot_xlo#24 line_xdyi::@5/(byte[]) plot_xlo#25 )
-  (byte[]) plot_xhi#18 ← phi( line_xdyi::@3/(byte[]) plot_xhi#24 line_xdyi::@5/(byte[]) plot_xhi#25 )
-  (byte) line_xdyi::xd#5 ← phi( line_xdyi::@3/(byte) line_xdyi::xd#2 line_xdyi::@5/(byte) line_xdyi::xd#1 )
-  (byte) line_xdyi::yd#4 ← phi( line_xdyi::@3/(byte) line_xdyi::yd#5 line_xdyi::@5/(byte) line_xdyi::yd#2 )
+  (byte[]) plot_bit#10 ← phi( line_xdyi::@3/(byte[]) plot_bit#22 line_xdyi::@5/(byte[]) plot_bit#23 )
+  (byte[]) plot_ylo#10 ← phi( line_xdyi::@3/(byte[]) plot_ylo#21 line_xdyi::@5/(byte[]) plot_ylo#22 )
+  (byte[]) plot_yhi#10 ← phi( line_xdyi::@3/(byte[]) plot_yhi#21 line_xdyi::@5/(byte[]) plot_yhi#22 )
+  (byte[]) plot_xlo#10 ← phi( line_xdyi::@3/(byte[]) plot_xlo#22 line_xdyi::@5/(byte[]) plot_xlo#23 )
+  (byte[]) plot_xhi#10 ← phi( line_xdyi::@3/(byte[]) plot_xhi#22 line_xdyi::@5/(byte[]) plot_xhi#23 )
+  (byte) line_xdyi::xd#6 ← phi( line_xdyi::@3/(byte) line_xdyi::xd#3 line_xdyi::@5/(byte) line_xdyi::xd#2 )
+  (byte) line_xdyi::yd#5 ← phi( line_xdyi::@3/(byte) line_xdyi::yd#6 line_xdyi::@5/(byte) line_xdyi::yd#3 )
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#6 )
-  (byte) line_xdyi::x#4 ← phi( line_xdyi::@3/(byte) line_xdyi::x#6 line_xdyi::@5/(byte) line_xdyi::x#1 )
-  (byte) line_xdyi::x1#1 ← phi( line_xdyi::@3/(byte) line_xdyi::x1#2 line_xdyi::@5/(byte) line_xdyi::x1#3 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#1 + (byte) 1
-  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#4 < (byte~) line_xdyi::$8
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#7 )
+  (byte) line_xdyi::x#5 ← phi( line_xdyi::@3/(byte) line_xdyi::x#7 line_xdyi::@5/(byte) line_xdyi::x#2 )
+  (byte) line_xdyi::x1#2 ← phi( line_xdyi::@3/(byte) line_xdyi::x1#3 line_xdyi::@5/(byte) line_xdyi::x1#4 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#2 + (byte) 1
+  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#5 < (byte~) line_xdyi::$8
   if((boolean~) line_xdyi::$9) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte[]) plot_bit#24 ← phi( line_xdyi::@5/(byte[]) plot_bit#25 )
-  (byte[]) plot_ylo#23 ← phi( line_xdyi::@5/(byte[]) plot_ylo#24 )
-  (byte[]) plot_yhi#23 ← phi( line_xdyi::@5/(byte[]) plot_yhi#24 )
-  (byte[]) plot_xlo#24 ← phi( line_xdyi::@5/(byte[]) plot_xlo#25 )
-  (byte[]) plot_xhi#24 ← phi( line_xdyi::@5/(byte[]) plot_xhi#25 )
-  (byte) line_xdyi::yd#5 ← phi( line_xdyi::@5/(byte) line_xdyi::yd#2 )
-  (byte) line_xdyi::x#6 ← phi( line_xdyi::@5/(byte) line_xdyi::x#1 )
-  (byte) line_xdyi::x1#2 ← phi( line_xdyi::@5/(byte) line_xdyi::x1#3 )
-  (byte) line_xdyi::xd#2 ← phi( line_xdyi::@5/(byte) line_xdyi::xd#1 )
+  (byte[]) plot_bit#22 ← phi( line_xdyi::@5/(byte[]) plot_bit#23 )
+  (byte[]) plot_ylo#21 ← phi( line_xdyi::@5/(byte[]) plot_ylo#22 )
+  (byte[]) plot_yhi#21 ← phi( line_xdyi::@5/(byte[]) plot_yhi#22 )
+  (byte[]) plot_xlo#22 ← phi( line_xdyi::@5/(byte[]) plot_xlo#23 )
+  (byte[]) plot_xhi#22 ← phi( line_xdyi::@5/(byte[]) plot_xhi#23 )
+  (byte) line_xdyi::yd#6 ← phi( line_xdyi::@5/(byte) line_xdyi::yd#3 )
+  (byte) line_xdyi::x#7 ← phi( line_xdyi::@5/(byte) line_xdyi::x#2 )
+  (byte) line_xdyi::x1#3 ← phi( line_xdyi::@5/(byte) line_xdyi::x1#4 )
+  (byte) line_xdyi::xd#3 ← phi( line_xdyi::@5/(byte) line_xdyi::xd#2 )
   (byte) line_xdyi::e#4 ← phi( line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#3 ← phi( line_xdyi::@5/(byte) line_xdyi::y#6 )
-  (byte~) line_xdyi::$6 ← (byte) line_xdyi::y#3 + (byte) 1
-  (byte) line_xdyi::y#1 ← (byte~) line_xdyi::$6
-  (byte~) line_xdyi::$7 ← (byte) line_xdyi::e#4 - (byte) line_xdyi::xd#2
+  (byte) line_xdyi::y#4 ← phi( line_xdyi::@5/(byte) line_xdyi::y#7 )
+  (byte~) line_xdyi::$6 ← (byte) line_xdyi::y#4 + (byte) 1
+  (byte) line_xdyi::y#2 ← (byte~) line_xdyi::$6
+  (byte~) line_xdyi::$7 ← (byte) line_xdyi::e#4 - (byte) line_xdyi::xd#3
   (byte) line_xdyi::e#2 ← (byte~) line_xdyi::$7
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte[]) plot_bit#1 ← phi( line::@15/(byte[]) plot_bit#3 line::@17/(byte[]) plot_bit#4 line::@19/(byte[]) plot_bit#5 line::@2/(byte[]) plot_bit#6 line::@22/(byte[]) plot_bit#7 line::@24/(byte[]) plot_bit#8 line::@3/(byte[]) plot_bit#9 line::@7/(byte[]) plot_bit#10 line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#1 ← phi( line::@15/(byte[]) plot_ylo#3 line::@17/(byte[]) plot_ylo#4 line::@19/(byte[]) plot_ylo#5 line::@2/(byte[]) plot_ylo#6 line::@22/(byte[]) plot_ylo#7 line::@24/(byte[]) plot_ylo#8 line::@3/(byte[]) plot_ylo#9 line::@7/(byte[]) plot_ylo#10 line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte[]) plot_yhi#1 ← phi( line::@15/(byte[]) plot_yhi#3 line::@17/(byte[]) plot_yhi#4 line::@19/(byte[]) plot_yhi#5 line::@2/(byte[]) plot_yhi#6 line::@22/(byte[]) plot_yhi#7 line::@24/(byte[]) plot_yhi#8 line::@3/(byte[]) plot_yhi#9 line::@7/(byte[]) plot_yhi#10 line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#1 ← phi( line::@15/(byte[]) plot_xlo#3 line::@17/(byte[]) plot_xlo#4 line::@19/(byte[]) plot_xlo#5 line::@2/(byte[]) plot_xlo#6 line::@22/(byte[]) plot_xlo#7 line::@24/(byte[]) plot_xlo#8 line::@3/(byte[]) plot_xlo#9 line::@7/(byte[]) plot_xlo#10 line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte[]) plot_xhi#1 ← phi( line::@15/(byte[]) plot_xhi#3 line::@17/(byte[]) plot_xhi#4 line::@19/(byte[]) plot_xhi#5 line::@2/(byte[]) plot_xhi#6 line::@22/(byte[]) plot_xhi#7 line::@24/(byte[]) plot_xhi#8 line::@3/(byte[]) plot_xhi#9 line::@7/(byte[]) plot_xhi#10 line_xdyi::@1/(byte[]) plot_xhi#11 )
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte[]) plot_bit#11 ← phi( line::@20/(byte[]) plot_bit#24 line::@24/(byte[]) plot_bit#25 )
+  (byte[]) plot_ylo#11 ← phi( line::@20/(byte[]) plot_ylo#23 line::@24/(byte[]) plot_ylo#24 )
+  (byte[]) plot_yhi#11 ← phi( line::@20/(byte[]) plot_yhi#23 line::@24/(byte[]) plot_yhi#24 )
+  (byte[]) plot_xlo#11 ← phi( line::@20/(byte[]) plot_xlo#24 line::@24/(byte[]) plot_xlo#25 )
+  (byte[]) plot_xhi#11 ← phi( line::@20/(byte[]) plot_xhi#24 line::@24/(byte[]) plot_xhi#25 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte~) line_xdyd::$0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  (byte) line_xdyd::e#0 ← (byte~) line_xdyd::$0
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::x1#5 ← phi( line_xdyd/(byte) line_xdyd::x1#6 line_xdyd::@2/(byte) line_xdyd::x1#2 )
+  (byte[]) plot_bit#3 ← phi( line_xdyd/(byte[]) plot_bit#11 line_xdyd::@2/(byte[]) plot_bit#12 )
+  (byte[]) plot_ylo#3 ← phi( line_xdyd/(byte[]) plot_ylo#11 line_xdyd::@2/(byte[]) plot_ylo#12 )
+  (byte[]) plot_yhi#3 ← phi( line_xdyd/(byte[]) plot_yhi#11 line_xdyd::@2/(byte[]) plot_yhi#12 )
+  (byte[]) plot_xlo#3 ← phi( line_xdyd/(byte[]) plot_xlo#11 line_xdyd::@2/(byte[]) plot_xlo#12 )
+  (byte[]) plot_xhi#3 ← phi( line_xdyd/(byte[]) plot_xhi#11 line_xdyd::@2/(byte[]) plot_xhi#12 )
+  (byte) line_xdyd::xd#4 ← phi( line_xdyd/(byte) line_xdyd::xd#5 line_xdyd::@2/(byte) line_xdyd::xd#6 )
+  (byte) line_xdyd::yd#4 ← phi( line_xdyd/(byte) line_xdyd::yd#2 line_xdyd::@2/(byte) line_xdyd::yd#5 )
+  (byte) line_xdyd::e#5 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#5 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte[]) plot_bit#27 ← phi( line_xdyd::@1/(byte[]) plot_bit#3 )
+  (byte[]) plot_ylo#26 ← phi( line_xdyd::@1/(byte[]) plot_ylo#3 )
+  (byte[]) plot_yhi#26 ← phi( line_xdyd::@1/(byte[]) plot_yhi#3 )
+  (byte[]) plot_xlo#27 ← phi( line_xdyd::@1/(byte[]) plot_xlo#3 )
+  (byte[]) plot_xhi#27 ← phi( line_xdyd::@1/(byte[]) plot_xhi#3 )
+  (byte) line_xdyd::y#7 ← phi( line_xdyd::@1/(byte) line_xdyd::y#3 )
+  (byte) line_xdyd::x1#4 ← phi( line_xdyd::@1/(byte) line_xdyd::x1#5 )
+  (byte) line_xdyd::xd#2 ← phi( line_xdyd::@1/(byte) line_xdyd::xd#4 )
+  (byte) line_xdyd::yd#3 ← phi( line_xdyd::@1/(byte) line_xdyd::yd#4 )
+  (byte) line_xdyd::e#3 ← phi( line_xdyd::@1/(byte) line_xdyd::e#5 )
+  (byte) line_xdyd::x#4 ← phi( line_xdyd::@1/(byte) line_xdyd::x#3 )
+  (byte~) line_xdyd::$2 ← (byte) line_xdyd::x#4 + (byte) 1
+  (byte) line_xdyd::x#2 ← (byte~) line_xdyd::$2
+  (byte~) line_xdyd::$3 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#3
+  (byte) line_xdyd::e#1 ← (byte~) line_xdyd::$3
+  (boolean~) line_xdyd::$5 ← (byte) line_xdyd::xd#2 >= (byte) line_xdyd::e#1
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte[]) plot_bit#12 ← phi( line_xdyd::@3/(byte[]) plot_bit#26 line_xdyd::@5/(byte[]) plot_bit#27 )
+  (byte[]) plot_ylo#12 ← phi( line_xdyd::@3/(byte[]) plot_ylo#25 line_xdyd::@5/(byte[]) plot_ylo#26 )
+  (byte[]) plot_yhi#12 ← phi( line_xdyd::@3/(byte[]) plot_yhi#25 line_xdyd::@5/(byte[]) plot_yhi#26 )
+  (byte[]) plot_xlo#12 ← phi( line_xdyd::@3/(byte[]) plot_xlo#26 line_xdyd::@5/(byte[]) plot_xlo#27 )
+  (byte[]) plot_xhi#12 ← phi( line_xdyd::@3/(byte[]) plot_xhi#26 line_xdyd::@5/(byte[]) plot_xhi#27 )
+  (byte) line_xdyd::xd#6 ← phi( line_xdyd::@3/(byte) line_xdyd::xd#3 line_xdyd::@5/(byte) line_xdyd::xd#2 )
+  (byte) line_xdyd::yd#5 ← phi( line_xdyd::@3/(byte) line_xdyd::yd#6 line_xdyd::@5/(byte) line_xdyd::yd#3 )
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#7 )
+  (byte) line_xdyd::x#5 ← phi( line_xdyd::@3/(byte) line_xdyd::x#7 line_xdyd::@5/(byte) line_xdyd::x#2 )
+  (byte) line_xdyd::x1#2 ← phi( line_xdyd::@3/(byte) line_xdyd::x1#3 line_xdyd::@5/(byte) line_xdyd::x1#4 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#2 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x#5 < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte[]) plot_bit#26 ← phi( line_xdyd::@5/(byte[]) plot_bit#27 )
+  (byte[]) plot_ylo#25 ← phi( line_xdyd::@5/(byte[]) plot_ylo#26 )
+  (byte[]) plot_yhi#25 ← phi( line_xdyd::@5/(byte[]) plot_yhi#26 )
+  (byte[]) plot_xlo#26 ← phi( line_xdyd::@5/(byte[]) plot_xlo#27 )
+  (byte[]) plot_xhi#26 ← phi( line_xdyd::@5/(byte[]) plot_xhi#27 )
+  (byte) line_xdyd::yd#6 ← phi( line_xdyd::@5/(byte) line_xdyd::yd#3 )
+  (byte) line_xdyd::x#7 ← phi( line_xdyd::@5/(byte) line_xdyd::x#2 )
+  (byte) line_xdyd::x1#3 ← phi( line_xdyd::@5/(byte) line_xdyd::x1#4 )
+  (byte) line_xdyd::xd#3 ← phi( line_xdyd::@5/(byte) line_xdyd::xd#2 )
+  (byte) line_xdyd::e#4 ← phi( line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#4 ← phi( line_xdyd::@5/(byte) line_xdyd::y#7 )
+  (byte~) line_xdyd::$6 ← (byte) line_xdyd::y#4 - (byte) 1
+  (byte) line_xdyd::y#2 ← (byte~) line_xdyd::$6
+  (byte~) line_xdyd::$7 ← (byte) line_xdyd::e#4 - (byte) line_xdyd::xd#3
+  (byte) line_xdyd::e#2 ← (byte~) line_xdyd::$7
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte[]) plot_bit#13 ← phi( line::@13/(byte[]) plot_bit#28 line::@3/(byte[]) plot_bit#29 )
+  (byte[]) plot_ylo#13 ← phi( line::@13/(byte[]) plot_ylo#27 line::@3/(byte[]) plot_ylo#28 )
+  (byte[]) plot_yhi#13 ← phi( line::@13/(byte[]) plot_yhi#27 line::@3/(byte[]) plot_yhi#28 )
+  (byte[]) plot_xlo#13 ← phi( line::@13/(byte[]) plot_xlo#28 line::@3/(byte[]) plot_xlo#29 )
+  (byte[]) plot_xhi#13 ← phi( line::@13/(byte[]) plot_xhi#28 line::@3/(byte[]) plot_xhi#29 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte~) line_ydxi::$0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  (byte) line_ydxi::e#0 ← (byte~) line_ydxi::$0
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::y1#5 ← phi( line_ydxi/(byte) line_ydxi::y1#6 line_ydxi::@2/(byte) line_ydxi::y1#2 )
+  (byte[]) plot_bit#6 ← phi( line_ydxi/(byte[]) plot_bit#13 line_ydxi::@2/(byte[]) plot_bit#14 )
+  (byte[]) plot_ylo#6 ← phi( line_ydxi/(byte[]) plot_ylo#13 line_ydxi::@2/(byte[]) plot_ylo#14 )
+  (byte[]) plot_yhi#6 ← phi( line_ydxi/(byte[]) plot_yhi#13 line_ydxi::@2/(byte[]) plot_yhi#14 )
+  (byte[]) plot_xlo#6 ← phi( line_ydxi/(byte[]) plot_xlo#13 line_ydxi::@2/(byte[]) plot_xlo#14 )
+  (byte[]) plot_xhi#6 ← phi( line_ydxi/(byte[]) plot_xhi#13 line_ydxi::@2/(byte[]) plot_xhi#14 )
+  (byte) line_ydxi::yd#4 ← phi( line_ydxi/(byte) line_ydxi::yd#5 line_ydxi::@2/(byte) line_ydxi::yd#6 )
+  (byte) line_ydxi::xd#4 ← phi( line_ydxi/(byte) line_ydxi::xd#2 line_ydxi::@2/(byte) line_ydxi::xd#5 )
+  (byte) line_ydxi::e#5 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#5 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte[]) plot_bit#31 ← phi( line_ydxi::@1/(byte[]) plot_bit#6 )
+  (byte[]) plot_ylo#30 ← phi( line_ydxi::@1/(byte[]) plot_ylo#6 )
+  (byte[]) plot_yhi#30 ← phi( line_ydxi::@1/(byte[]) plot_yhi#6 )
+  (byte[]) plot_xlo#31 ← phi( line_ydxi::@1/(byte[]) plot_xlo#6 )
+  (byte[]) plot_xhi#31 ← phi( line_ydxi::@1/(byte[]) plot_xhi#6 )
+  (byte) line_ydxi::x#7 ← phi( line_ydxi::@1/(byte) line_ydxi::x#3 )
+  (byte) line_ydxi::y1#4 ← phi( line_ydxi::@1/(byte) line_ydxi::y1#5 )
+  (byte) line_ydxi::yd#2 ← phi( line_ydxi::@1/(byte) line_ydxi::yd#4 )
+  (byte) line_ydxi::xd#3 ← phi( line_ydxi::@1/(byte) line_ydxi::xd#4 )
+  (byte) line_ydxi::e#3 ← phi( line_ydxi::@1/(byte) line_ydxi::e#5 )
+  (byte) line_ydxi::y#4 ← phi( line_ydxi::@1/(byte) line_ydxi::y#3 )
+  (byte~) line_ydxi::$2 ← (byte) line_ydxi::y#4 + (byte) 1
+  (byte) line_ydxi::y#2 ← (byte~) line_ydxi::$2
+  (byte~) line_ydxi::$3 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#3
+  (byte) line_ydxi::e#1 ← (byte~) line_ydxi::$3
+  (boolean~) line_ydxi::$5 ← (byte) line_ydxi::yd#2 >= (byte) line_ydxi::e#1
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte[]) plot_bit#14 ← phi( line_ydxi::@3/(byte[]) plot_bit#30 line_ydxi::@5/(byte[]) plot_bit#31 )
+  (byte[]) plot_ylo#14 ← phi( line_ydxi::@3/(byte[]) plot_ylo#29 line_ydxi::@5/(byte[]) plot_ylo#30 )
+  (byte[]) plot_yhi#14 ← phi( line_ydxi::@3/(byte[]) plot_yhi#29 line_ydxi::@5/(byte[]) plot_yhi#30 )
+  (byte[]) plot_xlo#14 ← phi( line_ydxi::@3/(byte[]) plot_xlo#30 line_ydxi::@5/(byte[]) plot_xlo#31 )
+  (byte[]) plot_xhi#14 ← phi( line_ydxi::@3/(byte[]) plot_xhi#30 line_ydxi::@5/(byte[]) plot_xhi#31 )
+  (byte) line_ydxi::yd#6 ← phi( line_ydxi::@3/(byte) line_ydxi::yd#3 line_ydxi::@5/(byte) line_ydxi::yd#2 )
+  (byte) line_ydxi::xd#5 ← phi( line_ydxi::@3/(byte) line_ydxi::xd#6 line_ydxi::@5/(byte) line_ydxi::xd#3 )
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#7 )
+  (byte) line_ydxi::y#5 ← phi( line_ydxi::@3/(byte) line_ydxi::y#7 line_ydxi::@5/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::y1#2 ← phi( line_ydxi::@3/(byte) line_ydxi::y1#3 line_ydxi::@5/(byte) line_ydxi::y1#4 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#2 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y#5 < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte[]) plot_bit#30 ← phi( line_ydxi::@5/(byte[]) plot_bit#31 )
+  (byte[]) plot_ylo#29 ← phi( line_ydxi::@5/(byte[]) plot_ylo#30 )
+  (byte[]) plot_yhi#29 ← phi( line_ydxi::@5/(byte[]) plot_yhi#30 )
+  (byte[]) plot_xlo#30 ← phi( line_ydxi::@5/(byte[]) plot_xlo#31 )
+  (byte[]) plot_xhi#30 ← phi( line_ydxi::@5/(byte[]) plot_xhi#31 )
+  (byte) line_ydxi::xd#6 ← phi( line_ydxi::@5/(byte) line_ydxi::xd#3 )
+  (byte) line_ydxi::y#7 ← phi( line_ydxi::@5/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::y1#3 ← phi( line_ydxi::@5/(byte) line_ydxi::y1#4 )
+  (byte) line_ydxi::yd#3 ← phi( line_ydxi::@5/(byte) line_ydxi::yd#2 )
+  (byte) line_ydxi::e#4 ← phi( line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#4 ← phi( line_ydxi::@5/(byte) line_ydxi::x#7 )
+  (byte~) line_ydxi::$6 ← (byte) line_ydxi::x#4 + (byte) 1
+  (byte) line_ydxi::x#2 ← (byte~) line_ydxi::$6
+  (byte~) line_ydxi::$7 ← (byte) line_ydxi::e#4 - (byte) line_ydxi::yd#3
+  (byte) line_ydxi::e#2 ← (byte~) line_ydxi::$7
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte[]) plot_bit#15 ← phi( line::@10/(byte[]) plot_bit#32 line::@6/(byte[]) plot_bit#33 )
+  (byte[]) plot_ylo#15 ← phi( line::@10/(byte[]) plot_ylo#31 line::@6/(byte[]) plot_ylo#32 )
+  (byte[]) plot_yhi#15 ← phi( line::@10/(byte[]) plot_yhi#31 line::@6/(byte[]) plot_yhi#32 )
+  (byte[]) plot_xlo#15 ← phi( line::@10/(byte[]) plot_xlo#32 line::@6/(byte[]) plot_xlo#33 )
+  (byte[]) plot_xhi#15 ← phi( line::@10/(byte[]) plot_xhi#32 line::@6/(byte[]) plot_xhi#33 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte~) line_ydxd::$0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  (byte) line_ydxd::e#0 ← (byte~) line_ydxd::$0
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::y1#5 ← phi( line_ydxd/(byte) line_ydxd::y1#6 line_ydxd::@2/(byte) line_ydxd::y1#2 )
+  (byte[]) plot_bit#5 ← phi( line_ydxd/(byte[]) plot_bit#15 line_ydxd::@2/(byte[]) plot_bit#16 )
+  (byte[]) plot_ylo#5 ← phi( line_ydxd/(byte[]) plot_ylo#15 line_ydxd::@2/(byte[]) plot_ylo#16 )
+  (byte[]) plot_yhi#5 ← phi( line_ydxd/(byte[]) plot_yhi#15 line_ydxd::@2/(byte[]) plot_yhi#16 )
+  (byte[]) plot_xlo#5 ← phi( line_ydxd/(byte[]) plot_xlo#15 line_ydxd::@2/(byte[]) plot_xlo#16 )
+  (byte[]) plot_xhi#5 ← phi( line_ydxd/(byte[]) plot_xhi#15 line_ydxd::@2/(byte[]) plot_xhi#16 )
+  (byte) line_ydxd::yd#4 ← phi( line_ydxd/(byte) line_ydxd::yd#5 line_ydxd::@2/(byte) line_ydxd::yd#6 )
+  (byte) line_ydxd::xd#4 ← phi( line_ydxd/(byte) line_ydxd::xd#2 line_ydxd::@2/(byte) line_ydxd::xd#5 )
+  (byte) line_ydxd::e#5 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#5 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte[]) plot_bit#35 ← phi( line_ydxd::@1/(byte[]) plot_bit#5 )
+  (byte[]) plot_ylo#34 ← phi( line_ydxd::@1/(byte[]) plot_ylo#5 )
+  (byte[]) plot_yhi#34 ← phi( line_ydxd::@1/(byte[]) plot_yhi#5 )
+  (byte[]) plot_xlo#35 ← phi( line_ydxd::@1/(byte[]) plot_xlo#5 )
+  (byte[]) plot_xhi#35 ← phi( line_ydxd::@1/(byte[]) plot_xhi#5 )
+  (byte) line_ydxd::x#7 ← phi( line_ydxd::@1/(byte) line_ydxd::x#3 )
+  (byte) line_ydxd::y1#4 ← phi( line_ydxd::@1/(byte) line_ydxd::y1#5 )
+  (byte) line_ydxd::yd#2 ← phi( line_ydxd::@1/(byte) line_ydxd::yd#4 )
+  (byte) line_ydxd::xd#3 ← phi( line_ydxd::@1/(byte) line_ydxd::xd#4 )
+  (byte) line_ydxd::e#3 ← phi( line_ydxd::@1/(byte) line_ydxd::e#5 )
+  (byte) line_ydxd::y#4 ← phi( line_ydxd::@1/(byte) line_ydxd::y#3 )
+  (byte~) line_ydxd::$2 ← (byte) line_ydxd::y#4 + (byte) 1
+  (byte) line_ydxd::y#2 ← (byte~) line_ydxd::$2
+  (byte~) line_ydxd::$3 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#3
+  (byte) line_ydxd::e#1 ← (byte~) line_ydxd::$3
+  (boolean~) line_ydxd::$5 ← (byte) line_ydxd::yd#2 >= (byte) line_ydxd::e#1
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte[]) plot_bit#16 ← phi( line_ydxd::@3/(byte[]) plot_bit#34 line_ydxd::@5/(byte[]) plot_bit#35 )
+  (byte[]) plot_ylo#16 ← phi( line_ydxd::@3/(byte[]) plot_ylo#33 line_ydxd::@5/(byte[]) plot_ylo#34 )
+  (byte[]) plot_yhi#16 ← phi( line_ydxd::@3/(byte[]) plot_yhi#33 line_ydxd::@5/(byte[]) plot_yhi#34 )
+  (byte[]) plot_xlo#16 ← phi( line_ydxd::@3/(byte[]) plot_xlo#34 line_ydxd::@5/(byte[]) plot_xlo#35 )
+  (byte[]) plot_xhi#16 ← phi( line_ydxd::@3/(byte[]) plot_xhi#34 line_ydxd::@5/(byte[]) plot_xhi#35 )
+  (byte) line_ydxd::yd#6 ← phi( line_ydxd::@3/(byte) line_ydxd::yd#3 line_ydxd::@5/(byte) line_ydxd::yd#2 )
+  (byte) line_ydxd::xd#5 ← phi( line_ydxd::@3/(byte) line_ydxd::xd#6 line_ydxd::@5/(byte) line_ydxd::xd#3 )
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#7 )
+  (byte) line_ydxd::y#5 ← phi( line_ydxd::@3/(byte) line_ydxd::y#7 line_ydxd::@5/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::y1#2 ← phi( line_ydxd::@3/(byte) line_ydxd::y1#3 line_ydxd::@5/(byte) line_ydxd::y1#4 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#2 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y#5 < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte[]) plot_bit#34 ← phi( line_ydxd::@5/(byte[]) plot_bit#35 )
+  (byte[]) plot_ylo#33 ← phi( line_ydxd::@5/(byte[]) plot_ylo#34 )
+  (byte[]) plot_yhi#33 ← phi( line_ydxd::@5/(byte[]) plot_yhi#34 )
+  (byte[]) plot_xlo#34 ← phi( line_ydxd::@5/(byte[]) plot_xlo#35 )
+  (byte[]) plot_xhi#34 ← phi( line_ydxd::@5/(byte[]) plot_xhi#35 )
+  (byte) line_ydxd::xd#6 ← phi( line_ydxd::@5/(byte) line_ydxd::xd#3 )
+  (byte) line_ydxd::y#7 ← phi( line_ydxd::@5/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::y1#3 ← phi( line_ydxd::@5/(byte) line_ydxd::y1#4 )
+  (byte) line_ydxd::yd#3 ← phi( line_ydxd::@5/(byte) line_ydxd::yd#2 )
+  (byte) line_ydxd::e#4 ← phi( line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#4 ← phi( line_ydxd::@5/(byte) line_ydxd::x#7 )
+  (byte~) line_ydxd::$6 ← (byte) line_ydxd::x#4 - (byte) 1
+  (byte) line_ydxd::x#2 ← (byte~) line_ydxd::$6
+  (byte~) line_ydxd::$7 ← (byte) line_ydxd::e#4 - (byte) line_ydxd::yd#3
+  (byte) line_ydxd::e#2 ← (byte~) line_ydxd::$7
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte[]) plot_bit#1 ← phi( line_xdyd::@1/(byte[]) plot_bit#3 line_xdyi::@1/(byte[]) plot_bit#4 line_ydxd::@1/(byte[]) plot_bit#5 line_ydxi::@1/(byte[]) plot_bit#6 )
+  (byte[]) plot_ylo#1 ← phi( line_xdyd::@1/(byte[]) plot_ylo#3 line_xdyi::@1/(byte[]) plot_ylo#4 line_ydxd::@1/(byte[]) plot_ylo#5 line_ydxi::@1/(byte[]) plot_ylo#6 )
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte[]) plot_yhi#1 ← phi( line_xdyd::@1/(byte[]) plot_yhi#3 line_xdyi::@1/(byte[]) plot_yhi#4 line_ydxd::@1/(byte[]) plot_yhi#5 line_ydxi::@1/(byte[]) plot_yhi#6 )
+  (byte[]) plot_xlo#1 ← phi( line_xdyd::@1/(byte[]) plot_xlo#3 line_xdyi::@1/(byte[]) plot_xlo#4 line_ydxd::@1/(byte[]) plot_xlo#5 line_ydxi::@1/(byte[]) plot_xlo#6 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte[]) plot_xhi#1 ← phi( line_xdyd::@1/(byte[]) plot_xhi#3 line_xdyi::@1/(byte[]) plot_xhi#4 line_ydxd::@1/(byte[]) plot_xhi#5 line_ydxi::@1/(byte[]) plot_xhi#6 )
   (byte*) plot::plotter_x#0 ← (byte) 0
   (byte*) plot::plotter_y#0 ← (byte) 0
-  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#9
+  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte~) plot::$4 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte*) plot::plotter#0 ← (byte~) plot::$4
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -4190,23 +6461,23 @@ plot::@return: scope:[plot]  from plot
   return 
   to:@return
 init_plot_tables: scope:[init_plot_tables]  from main::@3
-  (byte[]) plot_yhi#28 ← phi( main::@3/(byte[]) plot_yhi#31 )
-  (byte[]) plot_ylo#28 ← phi( main::@3/(byte[]) plot_ylo#31 )
-  (byte[]) plot_bit#12 ← phi( main::@3/(byte[]) plot_bit#19 )
-  (byte[]) plot_xhi#12 ← phi( main::@3/(byte[]) plot_xhi#19 )
+  (byte[]) plot_yhi#41 ← phi( main::@3/(byte[]) plot_yhi#44 )
+  (byte[]) plot_ylo#41 ← phi( main::@3/(byte[]) plot_ylo#44 )
+  (byte[]) plot_bit#7 ← phi( main::@3/(byte[]) plot_bit#17 )
+  (byte[]) plot_xhi#7 ← phi( main::@3/(byte[]) plot_xhi#17 )
   (byte*) BITMAP#4 ← phi( main::@3/(byte*) BITMAP#8 )
-  (byte[]) plot_xlo#12 ← phi( main::@3/(byte[]) plot_xlo#19 )
+  (byte[]) plot_xlo#7 ← phi( main::@3/(byte[]) plot_xlo#17 )
   (byte) init_plot_tables::bit#0 ← (byte) 128
   (byte) init_plot_tables::x#0 ← (byte) 0
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@2
-  (byte[]) plot_yhi#25 ← phi( init_plot_tables/(byte[]) plot_yhi#28 init_plot_tables::@2/(byte[]) plot_yhi#19 )
-  (byte[]) plot_ylo#25 ← phi( init_plot_tables/(byte[]) plot_ylo#28 init_plot_tables::@2/(byte[]) plot_ylo#19 )
-  (byte[]) plot_bit#2 ← phi( init_plot_tables/(byte[]) plot_bit#12 init_plot_tables::@2/(byte[]) plot_bit#13 )
+  (byte[]) plot_yhi#35 ← phi( init_plot_tables/(byte[]) plot_yhi#41 init_plot_tables::@2/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#35 ← phi( init_plot_tables/(byte[]) plot_ylo#41 init_plot_tables::@2/(byte[]) plot_ylo#17 )
+  (byte[]) plot_bit#2 ← phi( init_plot_tables/(byte[]) plot_bit#7 init_plot_tables::@2/(byte[]) plot_bit#8 )
   (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) init_plot_tables::bit#0 init_plot_tables::@2/(byte) init_plot_tables::bit#4 )
-  (byte[]) plot_xhi#2 ← phi( init_plot_tables/(byte[]) plot_xhi#12 init_plot_tables::@2/(byte[]) plot_xhi#13 )
+  (byte[]) plot_xhi#2 ← phi( init_plot_tables/(byte[]) plot_xhi#7 init_plot_tables::@2/(byte[]) plot_xhi#8 )
   (byte*) BITMAP#1 ← phi( init_plot_tables/(byte*) BITMAP#4 init_plot_tables::@2/(byte*) BITMAP#5 )
-  (byte[]) plot_xlo#2 ← phi( init_plot_tables/(byte[]) plot_xlo#12 init_plot_tables::@2/(byte[]) plot_xlo#13 )
+  (byte[]) plot_xlo#2 ← phi( init_plot_tables/(byte[]) plot_xlo#7 init_plot_tables::@2/(byte[]) plot_xlo#8 )
   (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) init_plot_tables::x#0 init_plot_tables::@2/(byte) init_plot_tables::x#1 )
   (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248
   *((byte[]) plot_xlo#2 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0
@@ -4219,37 +6490,37 @@ init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_
   if((boolean~) init_plot_tables::$4) goto init_plot_tables::@2
   to:init_plot_tables::@5
 init_plot_tables::@2: scope:[init_plot_tables]  from init_plot_tables::@1 init_plot_tables::@5
-  (byte[]) plot_yhi#19 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#25 init_plot_tables::@5/(byte[]) plot_yhi#26 )
-  (byte[]) plot_ylo#19 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#25 init_plot_tables::@5/(byte[]) plot_ylo#26 )
-  (byte[]) plot_bit#13 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 init_plot_tables::@5/(byte[]) plot_bit#20 )
+  (byte[]) plot_yhi#17 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#35 init_plot_tables::@5/(byte[]) plot_yhi#36 )
+  (byte[]) plot_ylo#17 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#35 init_plot_tables::@5/(byte[]) plot_ylo#36 )
+  (byte[]) plot_bit#8 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 init_plot_tables::@5/(byte[]) plot_bit#18 )
   (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@1/(byte) init_plot_tables::bit#1 init_plot_tables::@5/(byte) init_plot_tables::bit#2 )
-  (byte[]) plot_xhi#13 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 init_plot_tables::@5/(byte[]) plot_xhi#20 )
+  (byte[]) plot_xhi#8 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 init_plot_tables::@5/(byte[]) plot_xhi#18 )
   (byte*) BITMAP#5 ← phi( init_plot_tables::@1/(byte*) BITMAP#1 init_plot_tables::@5/(byte*) BITMAP#9 )
-  (byte[]) plot_xlo#13 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 init_plot_tables::@5/(byte[]) plot_xlo#20 )
+  (byte[]) plot_xlo#8 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 init_plot_tables::@5/(byte[]) plot_xlo#18 )
   (byte) init_plot_tables::x#3 ← phi( init_plot_tables::@1/(byte) init_plot_tables::x#2 init_plot_tables::@5/(byte) init_plot_tables::x#4 )
   (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#3
   (boolean~) init_plot_tables::$5 ← (byte) init_plot_tables::x#1 != (byte) 0
   if((boolean~) init_plot_tables::$5) goto init_plot_tables::@1
   to:init_plot_tables::@6
 init_plot_tables::@5: scope:[init_plot_tables]  from init_plot_tables::@1
-  (byte[]) plot_yhi#26 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#25 )
-  (byte[]) plot_ylo#26 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#25 )
-  (byte[]) plot_bit#20 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 )
-  (byte[]) plot_xhi#20 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 )
+  (byte[]) plot_yhi#36 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#35 )
+  (byte[]) plot_ylo#36 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#35 )
+  (byte[]) plot_bit#18 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 )
+  (byte[]) plot_xhi#18 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 )
   (byte*) BITMAP#9 ← phi( init_plot_tables::@1/(byte*) BITMAP#1 )
-  (byte[]) plot_xlo#20 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 )
+  (byte[]) plot_xlo#18 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 )
   (byte) init_plot_tables::x#4 ← phi( init_plot_tables::@1/(byte) init_plot_tables::x#2 )
   (byte) init_plot_tables::bit#2 ← (byte) 128
   to:init_plot_tables::@2
 init_plot_tables::@6: scope:[init_plot_tables]  from init_plot_tables::@2
-  (byte[]) plot_yhi#13 ← phi( init_plot_tables::@2/(byte[]) plot_yhi#19 )
-  (byte[]) plot_ylo#13 ← phi( init_plot_tables::@2/(byte[]) plot_ylo#19 )
+  (byte[]) plot_yhi#8 ← phi( init_plot_tables::@2/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#8 ← phi( init_plot_tables::@2/(byte[]) plot_ylo#17 )
   (byte*) init_plot_tables::yoffs#0 ← (byte) 0
   (byte) init_plot_tables::y#0 ← (byte) 0
   to:init_plot_tables::@3
 init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_plot_tables::@6
-  (byte[]) plot_yhi#2 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#12 init_plot_tables::@6/(byte[]) plot_yhi#13 )
-  (byte[]) plot_ylo#2 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#12 init_plot_tables::@6/(byte[]) plot_ylo#13 )
+  (byte[]) plot_yhi#2 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#7 init_plot_tables::@6/(byte[]) plot_yhi#8 )
+  (byte[]) plot_ylo#2 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#7 init_plot_tables::@6/(byte[]) plot_ylo#8 )
   (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@6/(byte*) init_plot_tables::yoffs#0 )
   (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@6/(byte) init_plot_tables::y#0 )
   (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7
@@ -4263,8 +6534,8 @@ init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_p
   if((boolean~) init_plot_tables::$12) goto init_plot_tables::@4
   to:init_plot_tables::@7
 init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_plot_tables::@7
-  (byte[]) plot_yhi#12 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 init_plot_tables::@7/(byte[]) plot_yhi#20 )
-  (byte[]) plot_ylo#12 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 init_plot_tables::@7/(byte[]) plot_ylo#20 )
+  (byte[]) plot_yhi#7 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 init_plot_tables::@7/(byte[]) plot_yhi#18 )
+  (byte[]) plot_ylo#7 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 init_plot_tables::@7/(byte[]) plot_ylo#18 )
   (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 init_plot_tables::@7/(byte*) init_plot_tables::yoffs#1 )
   (byte) init_plot_tables::y#3 ← phi( init_plot_tables::@3/(byte) init_plot_tables::y#2 init_plot_tables::@7/(byte) init_plot_tables::y#4 )
   (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#3
@@ -4272,8 +6543,8 @@ init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_p
   if((boolean~) init_plot_tables::$14) goto init_plot_tables::@3
   to:init_plot_tables::@return
 init_plot_tables::@7: scope:[init_plot_tables]  from init_plot_tables::@3
-  (byte[]) plot_yhi#20 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 )
-  (byte[]) plot_ylo#20 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 )
+  (byte[]) plot_yhi#18 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 )
+  (byte[]) plot_ylo#18 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 )
   (byte) init_plot_tables::y#4 ← phi( init_plot_tables::@3/(byte) init_plot_tables::y#2 )
   (byte*) init_plot_tables::yoffs#3 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 )
   (byte*~) init_plot_tables::$13 ← (byte*) init_plot_tables::yoffs#3 + (word) 320
@@ -4313,16 +6584,16 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
-  (byte[]) plot_yhi#34 ← phi( @begin/(byte[]) plot_yhi#0 )
-  (byte[]) plot_ylo#34 ← phi( @begin/(byte[]) plot_ylo#0 )
+@10: scope:[]  from @begin
+  (byte[]) plot_yhi#47 ← phi( @begin/(byte[]) plot_yhi#0 )
+  (byte[]) plot_ylo#47 ← phi( @begin/(byte[]) plot_ylo#0 )
   (byte) lines_cnt#9 ← phi( @begin/(byte) lines_cnt#0 )
   (byte[]) lines_y#9 ← phi( @begin/(byte[]) lines_y#0 )
   (byte[]) lines_x#9 ← phi( @begin/(byte[]) lines_x#0 )
   (byte*) SCREEN#6 ← phi( @begin/(byte*) SCREEN#0 )
-  (byte[]) plot_bit#26 ← phi( @begin/(byte[]) plot_bit#0 )
-  (byte[]) plot_xhi#26 ← phi( @begin/(byte[]) plot_xhi#0 )
-  (byte[]) plot_xlo#26 ← phi( @begin/(byte[]) plot_xlo#0 )
+  (byte[]) plot_bit#36 ← phi( @begin/(byte[]) plot_bit#0 )
+  (byte[]) plot_xhi#36 ← phi( @begin/(byte[]) plot_xhi#0 )
+  (byte[]) plot_xlo#36 ← phi( @begin/(byte[]) plot_xlo#0 )
   (byte*) BITMAP#7 ← phi( @begin/(byte*) BITMAP#0 )
   (byte*) D018#2 ← phi( @begin/(byte*) D018#0 )
   (byte*) D011#2 ← phi( @begin/(byte*) D011#0 )
@@ -4333,35 +6604,60 @@ init_screen::@return: scope:[init_screen]  from init_screen::@2
   (byte*) BGCOL#2 ← phi( @begin/(byte*) BGCOL#0 )
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Not aliassing across scopes: line::x0#0 lines::$0
 Not aliassing across scopes: line::x1#0 lines::$2
 Not aliassing across scopes: line::y0#0 lines::$3
 Not aliassing across scopes: line::y1#0 lines::$5
-Not aliassing across scopes: plot::x#0 line::x0#4
-Not aliassing across scopes: plot::y#0 line::y0#3
-Not aliassing across scopes: plot::x#1 line::x1#4
-Not aliassing across scopes: plot::y#1 line::y1#3
-Not aliassing across scopes: plot::x#2 line::x0#5
-Not aliassing across scopes: plot::y#2 line::y0#5
-Not aliassing across scopes: plot::x#3 line::x1#5
-Not aliassing across scopes: plot::y#3 line::y1#5
-Not aliassing across scopes: line_xdyi::x#0 line::x0#6
+Not aliassing across scopes: line_ydxi::y#0 line::y0#5
+Not aliassing across scopes: line_ydxi::x#0 line::x0#4
+Not aliassing across scopes: line_ydxi::y1#0 line::y1#5
+Not aliassing across scopes: line_ydxi::yd#0 line::yd#4
+Not aliassing across scopes: line_ydxi::xd#0 line::xd#4
+Not aliassing across scopes: line_xdyi::x#0 line::x0#5
 Not aliassing across scopes: line_xdyi::y#0 line::y0#6
-Not aliassing across scopes: line_xdyi::x1#0 line::x1#6
-Not aliassing across scopes: line_xdyi::xd#0 line::xd#3
-Not aliassing across scopes: line_xdyi::yd#0 line::yd#1
-Not aliassing across scopes: plot::x#4 line::x0#7
-Not aliassing across scopes: plot::y#4 line::y0#7
-Not aliassing across scopes: plot::x#5 line::x1#7
-Not aliassing across scopes: plot::y#5 line::y1#6
-Not aliassing across scopes: plot::x#6 line::x0#8
-Not aliassing across scopes: plot::y#6 line::y0#8
-Not aliassing across scopes: plot::x#7 line::x1#8
-Not aliassing across scopes: plot::y#7 line::y1#7
-Not aliassing across scopes: plot::x#8 line_xdyi::x#2
-Not aliassing across scopes: plot::y#8 line_xdyi::y#2
+Not aliassing across scopes: line_xdyi::x1#0 line::x1#4
+Not aliassing across scopes: line_xdyi::xd#0 line::xd#5
+Not aliassing across scopes: line_xdyi::yd#0 line::yd#5
+Not aliassing across scopes: line_ydxd::y#0 line::y1#6
+Not aliassing across scopes: line_ydxd::x#0 line::x1#5
+Not aliassing across scopes: line_ydxd::y1#0 line::y0#7
+Not aliassing across scopes: line_ydxd::yd#0 line::yd#6
+Not aliassing across scopes: line_ydxd::xd#0 line::xd#6
+Not aliassing across scopes: line_xdyd::x#0 line::x0#6
+Not aliassing across scopes: line_xdyd::y#0 line::y0#8
+Not aliassing across scopes: line_xdyd::x1#0 line::x1#6
+Not aliassing across scopes: line_xdyd::xd#0 line::xd#7
+Not aliassing across scopes: line_xdyd::yd#0 line::yd#7
+Not aliassing across scopes: line_ydxd::y#1 line::y0#11
+Not aliassing across scopes: line_ydxd::x#1 line::x0#7
+Not aliassing across scopes: line_ydxd::y1#1 line::y1#9
+Not aliassing across scopes: line_ydxd::yd#1 line::yd#8
+Not aliassing across scopes: line_ydxd::xd#1 line::xd#10
+Not aliassing across scopes: line_xdyd::x#1 line::x1#7
+Not aliassing across scopes: line_xdyd::y#1 line::y1#10
+Not aliassing across scopes: line_xdyd::x1#1 line::x0#8
+Not aliassing across scopes: line_xdyd::xd#1 line::xd#11
+Not aliassing across scopes: line_xdyd::yd#1 line::yd#9
+Not aliassing across scopes: line_ydxi::y#1 line::y1#11
+Not aliassing across scopes: line_ydxi::x#1 line::x1#8
+Not aliassing across scopes: line_ydxi::y1#1 line::y0#12
+Not aliassing across scopes: line_ydxi::yd#1 line::yd#10
+Not aliassing across scopes: line_ydxi::xd#1 line::xd#12
+Not aliassing across scopes: line_xdyi::x#1 line::x1#9
+Not aliassing across scopes: line_xdyi::y#1 line::y1#12
+Not aliassing across scopes: line_xdyi::x1#1 line::x0#9
+Not aliassing across scopes: line_xdyi::xd#1 line::xd#13
+Not aliassing across scopes: line_xdyi::yd#1 line::yd#11
+Not aliassing across scopes: plot::x#0 line_xdyi::x#3
+Not aliassing across scopes: plot::y#0 line_xdyi::y#3
+Not aliassing across scopes: plot::x#1 line_xdyd::x#3
+Not aliassing across scopes: plot::y#1 line_xdyd::y#3
+Not aliassing across scopes: plot::x#2 line_ydxi::x#3
+Not aliassing across scopes: plot::y#2 line_ydxi::y#3
+Not aliassing across scopes: plot::x#3 line_ydxd::x#3
+Not aliassing across scopes: plot::y#3 line_ydxd::y#3
 Not aliassing across scopes: init_screen::b#0 BITMAP#2
 Not aliassing across scopes: init_screen::c#0 SCREEN#1
 Not aliassing identity: SCREEN#2 SCREEN#2
@@ -4373,75 +6669,121 @@ Alias (byte) RSEL#0 = (byte) RSEL#1 (byte) RSEL#2
 Alias (byte*) D011#0 = (byte*) D011#1 (byte*) D011#2 
 Alias (byte*) D018#0 = (byte*) D018#1 (byte*) D018#2 
 Alias (byte*) BITMAP#0 = (byte*) BITMAP#6 (byte*) BITMAP#7 (byte*) BITMAP#8 (byte*) BITMAP#4 (byte*) BITMAP#2 
-Alias (byte[]) plot_xlo#0 = (byte[]) plot_xlo#21 (byte[]) plot_xlo#26 (byte[]) plot_xlo#19 (byte[]) plot_xlo#31 (byte[]) plot_xlo#12 
-Alias (byte[]) plot_xhi#0 = (byte[]) plot_xhi#21 (byte[]) plot_xhi#26 (byte[]) plot_xhi#19 (byte[]) plot_xhi#31 (byte[]) plot_xhi#12 
-Alias (byte[]) plot_bit#0 = (byte[]) plot_bit#21 (byte[]) plot_bit#26 (byte[]) plot_bit#19 (byte[]) plot_bit#31 (byte[]) plot_bit#12 
+Alias (byte[]) plot_xlo#0 = (byte[]) plot_xlo#19 (byte[]) plot_xlo#36 (byte[]) plot_xlo#17 (byte[]) plot_xlo#48 (byte[]) plot_xlo#7 
+Alias (byte[]) plot_xhi#0 = (byte[]) plot_xhi#19 (byte[]) plot_xhi#36 (byte[]) plot_xhi#17 (byte[]) plot_xhi#48 (byte[]) plot_xhi#7 
+Alias (byte[]) plot_bit#0 = (byte[]) plot_bit#19 (byte[]) plot_bit#36 (byte[]) plot_bit#17 (byte[]) plot_bit#48 (byte[]) plot_bit#7 
 Alias (byte*) SCREEN#0 = (byte*) SCREEN#5 (byte*) SCREEN#6 (byte*) SCREEN#4 
 Alias (byte[]) lines_x#0 = (byte[]) lines_x#8 (byte[]) lines_x#9 (byte[]) lines_x#7 (byte[]) lines_x#5 
 Alias (byte[]) lines_y#0 = (byte[]) lines_y#8 (byte[]) lines_y#9 (byte[]) lines_y#7 (byte[]) lines_y#5 
 Alias (byte) lines_cnt#0 = (byte) lines_cnt#8 (byte) lines_cnt#9 (byte) lines_cnt#7 (byte) lines_cnt#5 
-Alias (byte[]) plot_ylo#0 = (byte[]) plot_ylo#32 (byte[]) plot_ylo#34 (byte[]) plot_ylo#31 (byte[]) plot_ylo#35 (byte[]) plot_ylo#28 
-Alias (byte[]) plot_yhi#0 = (byte[]) plot_yhi#32 (byte[]) plot_yhi#34 (byte[]) plot_yhi#31 (byte[]) plot_yhi#35 (byte[]) plot_yhi#28 
+Alias (byte[]) plot_ylo#0 = (byte[]) plot_ylo#45 (byte[]) plot_ylo#47 (byte[]) plot_ylo#44 (byte[]) plot_ylo#52 (byte[]) plot_ylo#41 
+Alias (byte[]) plot_yhi#0 = (byte[]) plot_yhi#45 (byte[]) plot_yhi#47 (byte[]) plot_yhi#44 (byte[]) plot_yhi#52 (byte[]) plot_yhi#41 
 Alias (byte[]) lines_x#2 = (byte[]) lines_x#6 (byte[]) lines_x#4 
 Alias (byte[]) lines_y#2 = (byte[]) lines_y#6 (byte[]) lines_y#4 
 Alias (byte) lines_cnt#3 = (byte) lines_cnt#6 (byte) lines_cnt#4 
-Alias (byte[]) plot_xhi#28 = (byte[]) plot_xhi#32 (byte[]) plot_xhi#30 
-Alias (byte[]) plot_xlo#28 = (byte[]) plot_xlo#32 (byte[]) plot_xlo#30 
-Alias (byte[]) plot_yhi#29 = (byte[]) plot_yhi#36 (byte[]) plot_yhi#33 
-Alias (byte[]) plot_ylo#29 = (byte[]) plot_ylo#36 (byte[]) plot_ylo#33 
-Alias (byte[]) plot_bit#28 = (byte[]) plot_bit#32 (byte[]) plot_bit#30 
+Alias (byte[]) plot_xhi#45 = (byte[]) plot_xhi#49 (byte[]) plot_xhi#47 
+Alias (byte[]) plot_xlo#45 = (byte[]) plot_xlo#49 (byte[]) plot_xlo#47 
+Alias (byte[]) plot_yhi#49 = (byte[]) plot_yhi#53 (byte[]) plot_yhi#51 
+Alias (byte[]) plot_ylo#49 = (byte[]) plot_ylo#53 (byte[]) plot_ylo#51 
+Alias (byte[]) plot_bit#45 = (byte[]) plot_bit#49 (byte[]) plot_bit#47 
 Alias (byte) lines::l#2 = (byte) lines::l#3 
 Alias (byte) lines_cnt#1 = (byte) lines_cnt#2 
 Alias (byte[]) lines_x#1 = (byte[]) lines_x#3 
 Alias (byte[]) lines_y#1 = (byte[]) lines_y#3 
-Alias (byte[]) plot_xhi#10 = (byte[]) plot_xhi#29 (byte[]) plot_xhi#27 (byte[]) plot_xhi#22 (byte[]) plot_xhi#16 (byte[]) plot_xhi#14 (byte[]) plot_xhi#6 (byte[]) plot_xhi#4 (byte[]) plot_xhi#15 (byte[]) plot_xhi#9 (byte[]) plot_xhi#5 (byte[]) plot_xhi#23 (byte[]) plot_xhi#7 (byte[]) plot_xhi#3 (byte[]) plot_xhi#8 (byte[]) plot_xhi#17 
-Alias (byte[]) plot_xlo#10 = (byte[]) plot_xlo#29 (byte[]) plot_xlo#27 (byte[]) plot_xlo#22 (byte[]) plot_xlo#16 (byte[]) plot_xlo#14 (byte[]) plot_xlo#6 (byte[]) plot_xlo#4 (byte[]) plot_xlo#15 (byte[]) plot_xlo#9 (byte[]) plot_xlo#5 (byte[]) plot_xlo#23 (byte[]) plot_xlo#7 (byte[]) plot_xlo#3 (byte[]) plot_xlo#8 (byte[]) plot_xlo#17 
-Alias (byte[]) plot_yhi#10 = (byte[]) plot_yhi#30 (byte[]) plot_yhi#27 (byte[]) plot_yhi#21 (byte[]) plot_yhi#16 (byte[]) plot_yhi#14 (byte[]) plot_yhi#6 (byte[]) plot_yhi#4 (byte[]) plot_yhi#15 (byte[]) plot_yhi#9 (byte[]) plot_yhi#5 (byte[]) plot_yhi#22 (byte[]) plot_yhi#7 (byte[]) plot_yhi#3 (byte[]) plot_yhi#8 (byte[]) plot_yhi#17 
-Alias (byte[]) plot_ylo#10 = (byte[]) plot_ylo#30 (byte[]) plot_ylo#27 (byte[]) plot_ylo#21 (byte[]) plot_ylo#16 (byte[]) plot_ylo#14 (byte[]) plot_ylo#6 (byte[]) plot_ylo#4 (byte[]) plot_ylo#15 (byte[]) plot_ylo#9 (byte[]) plot_ylo#5 (byte[]) plot_ylo#22 (byte[]) plot_ylo#7 (byte[]) plot_ylo#3 (byte[]) plot_ylo#8 (byte[]) plot_ylo#17 
-Alias (byte[]) plot_bit#10 = (byte[]) plot_bit#29 (byte[]) plot_bit#27 (byte[]) plot_bit#22 (byte[]) plot_bit#16 (byte[]) plot_bit#14 (byte[]) plot_bit#6 (byte[]) plot_bit#4 (byte[]) plot_bit#15 (byte[]) plot_bit#9 (byte[]) plot_bit#5 (byte[]) plot_bit#23 (byte[]) plot_bit#7 (byte[]) plot_bit#3 (byte[]) plot_bit#8 (byte[]) plot_bit#17 
-Alias (byte) line::x0#0 = (byte) line::x0#1 (byte) line::x0#2 (byte) line::x0#3 (byte) line::x0#4 (byte) line::x0#9 (byte) line::x0#5 (byte) line::x0#6 (byte) line::x0#7 (byte) line::x0#8 
-Alias (byte) line::x1#0 = (byte) line::x1#1 (byte) line::x1#2 (byte) line::x1#3 (byte) line::x1#9 (byte) line::x1#4 (byte) line::x1#11 (byte) line::x1#10 (byte) line::x1#5 (byte) line::x1#6 (byte) line::x1#12 (byte) line::x1#7 (byte) line::x1#13 (byte) line::x1#8 
-Alias (byte) line::y0#0 = (byte) line::y0#9 (byte) line::y0#1 (byte) line::y0#2 (byte) line::y0#3 (byte) line::y0#4 (byte) line::y0#5 (byte) line::y0#6 (byte) line::y0#7 (byte) line::y0#8 
-Alias (byte) line::y1#0 = (byte) line::y1#8 (byte) line::y1#1 (byte) line::y1#2 (byte) line::y1#9 (byte) line::y1#3 (byte) line::y1#4 (byte) line::y1#10 (byte) line::y1#5 (byte) line::y1#11 (byte) line::y1#6 (byte) line::y1#12 (byte) line::y1#7 
-Alias (byte) line::xd#0 = (byte~) line::$13 
-Alias (byte) line::xd#1 = (byte~) line::$2 (byte) line::xd#2 (byte) line::xd#3 
-Alias (byte) line::yd#0 = (byte~) line::$5 (byte) line::yd#1 
-Alias (byte) line_xdyi::yd#0 = (byte) line_xdyi::yd#1 
-Alias (byte) line_xdyi::x#0 = (byte) line_xdyi::x#5 
-Alias (byte) line_xdyi::y#0 = (byte) line_xdyi::y#4 
-Alias (byte) line_xdyi::xd#0 = (byte) line_xdyi::xd#4 
-Alias (byte) line_xdyi::x1#0 = (byte) line_xdyi::x1#5 
+Alias (byte[]) plot_xhi#20 = (byte[]) plot_xhi#46 (byte[]) plot_xhi#44 (byte[]) plot_xhi#43 (byte[]) plot_xhi#42 (byte[]) plot_xhi#41 (byte[]) plot_xhi#38 (byte[]) plot_xhi#37 (byte[]) plot_xhi#29 (byte[]) plot_xhi#33 (byte[]) plot_xhi#24 (byte[]) plot_xhi#40 (byte[]) plot_xhi#39 (byte[]) plot_xhi#32 (byte[]) plot_xhi#25 (byte[]) plot_xhi#28 (byte[]) plot_xhi#21 
+Alias (byte[]) plot_xlo#20 = (byte[]) plot_xlo#46 (byte[]) plot_xlo#44 (byte[]) plot_xlo#43 (byte[]) plot_xlo#42 (byte[]) plot_xlo#41 (byte[]) plot_xlo#38 (byte[]) plot_xlo#37 (byte[]) plot_xlo#29 (byte[]) plot_xlo#33 (byte[]) plot_xlo#24 (byte[]) plot_xlo#40 (byte[]) plot_xlo#39 (byte[]) plot_xlo#32 (byte[]) plot_xlo#25 (byte[]) plot_xlo#28 (byte[]) plot_xlo#21 
+Alias (byte[]) plot_yhi#19 = (byte[]) plot_yhi#50 (byte[]) plot_yhi#48 (byte[]) plot_yhi#46 (byte[]) plot_yhi#43 (byte[]) plot_yhi#42 (byte[]) plot_yhi#38 (byte[]) plot_yhi#37 (byte[]) plot_yhi#28 (byte[]) plot_yhi#32 (byte[]) plot_yhi#23 (byte[]) plot_yhi#40 (byte[]) plot_yhi#39 (byte[]) plot_yhi#31 (byte[]) plot_yhi#24 (byte[]) plot_yhi#27 (byte[]) plot_yhi#20 
+Alias (byte[]) plot_ylo#19 = (byte[]) plot_ylo#50 (byte[]) plot_ylo#48 (byte[]) plot_ylo#46 (byte[]) plot_ylo#43 (byte[]) plot_ylo#42 (byte[]) plot_ylo#38 (byte[]) plot_ylo#37 (byte[]) plot_ylo#28 (byte[]) plot_ylo#32 (byte[]) plot_ylo#23 (byte[]) plot_ylo#40 (byte[]) plot_ylo#39 (byte[]) plot_ylo#31 (byte[]) plot_ylo#24 (byte[]) plot_ylo#27 (byte[]) plot_ylo#20 
+Alias (byte[]) plot_bit#20 = (byte[]) plot_bit#46 (byte[]) plot_bit#44 (byte[]) plot_bit#43 (byte[]) plot_bit#42 (byte[]) plot_bit#41 (byte[]) plot_bit#38 (byte[]) plot_bit#37 (byte[]) plot_bit#29 (byte[]) plot_bit#33 (byte[]) plot_bit#24 (byte[]) plot_bit#40 (byte[]) plot_bit#39 (byte[]) plot_bit#32 (byte[]) plot_bit#25 (byte[]) plot_bit#28 (byte[]) plot_bit#21 
+Alias (byte) line::x0#0 = (byte) line::x0#1 (byte) line::x0#2 (byte) line::x0#3 (byte) line::x0#11 (byte) line::x0#10 (byte) line::x0#4 (byte) line::x0#5 (byte) line::x0#6 (byte) line::x0#13 (byte) line::x0#12 (byte) line::x0#7 (byte) line::x0#8 (byte) line::x0#9 
+Alias (byte) line::x1#0 = (byte) line::x1#1 (byte) line::x1#2 (byte) line::x1#3 (byte) line::x1#11 (byte) line::x1#10 (byte) line::x1#4 (byte) line::x1#5 (byte) line::x1#6 (byte) line::x1#13 (byte) line::x1#12 (byte) line::x1#7 (byte) line::x1#8 (byte) line::x1#9 
+Alias (byte) line::y0#0 = (byte) line::y0#13 (byte) line::y0#1 (byte) line::y0#2 (byte) line::y0#3 (byte) line::y0#4 (byte) line::y0#5 (byte) line::y0#6 (byte) line::y0#7 (byte) line::y0#8 (byte) line::y0#9 (byte) line::y0#10 (byte) line::y0#11 (byte) line::y0#12 
+Alias (byte) line::y1#0 = (byte) line::y1#13 (byte) line::y1#1 (byte) line::y1#2 (byte) line::y1#3 (byte) line::y1#4 (byte) line::y1#5 (byte) line::y1#6 (byte) line::y1#7 (byte) line::y1#8 (byte) line::y1#9 (byte) line::y1#10 (byte) line::y1#11 (byte) line::y1#12 
+Alias (byte) line::xd#0 = (byte~) line::$15 (byte) line::xd#8 (byte) line::xd#9 (byte) line::xd#10 (byte) line::xd#11 (byte) line::xd#12 (byte) line::xd#13 
+Alias (byte) line::xd#1 = (byte~) line::$2 (byte) line::xd#2 (byte) line::xd#3 (byte) line::xd#4 (byte) line::xd#5 (byte) line::xd#6 (byte) line::xd#7 
+Alias (byte) line::yd#0 = (byte~) line::$10 (byte) line::yd#6 (byte) line::yd#7 
+Alias (byte) line::yd#1 = (byte~) line::$5 (byte) line::yd#4 (byte) line::yd#5 
+Alias (byte) line::yd#10 = (byte) line::yd#2 (byte~) line::$23 (byte) line::yd#11 
+Alias (byte) line::yd#3 = (byte~) line::$18 (byte) line::yd#8 (byte) line::yd#9 
 Alias (byte) line_xdyi::e#0 = (byte~) line_xdyi::$0 
-Alias (byte) line_xdyi::x#2 = (byte) line_xdyi::x#3 
+Alias (byte) line_xdyi::x#3 = (byte) line_xdyi::x#4 
 Alias (byte) line_xdyi::e#3 = (byte) line_xdyi::e#5 
-Alias (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#3 (byte) line_xdyi::yd#5 
-Alias (byte) line_xdyi::xd#1 = (byte) line_xdyi::xd#3 (byte) line_xdyi::xd#2 
-Alias (byte) line_xdyi::x1#2 = (byte) line_xdyi::x1#3 (byte) line_xdyi::x1#4 
-Alias (byte) line_xdyi::y#2 = (byte) line_xdyi::y#6 (byte) line_xdyi::y#3 
-Alias (byte[]) plot_xhi#11 = (byte[]) plot_xhi#25 (byte[]) plot_xhi#24 
-Alias (byte[]) plot_xlo#11 = (byte[]) plot_xlo#25 (byte[]) plot_xlo#24 
-Alias (byte[]) plot_yhi#11 = (byte[]) plot_yhi#24 (byte[]) plot_yhi#23 
-Alias (byte[]) plot_ylo#11 = (byte[]) plot_ylo#24 (byte[]) plot_ylo#23 
-Alias (byte[]) plot_bit#11 = (byte[]) plot_bit#25 (byte[]) plot_bit#24 
-Alias (byte) line_xdyi::x#1 = (byte~) line_xdyi::$2 (byte) line_xdyi::x#6 
+Alias (byte) line_xdyi::yd#3 = (byte) line_xdyi::yd#4 (byte) line_xdyi::yd#6 
+Alias (byte) line_xdyi::xd#2 = (byte) line_xdyi::xd#4 (byte) line_xdyi::xd#3 
+Alias (byte) line_xdyi::x1#3 = (byte) line_xdyi::x1#4 (byte) line_xdyi::x1#5 
+Alias (byte) line_xdyi::y#3 = (byte) line_xdyi::y#7 (byte) line_xdyi::y#4 
+Alias (byte[]) plot_xhi#22 = (byte[]) plot_xhi#23 (byte[]) plot_xhi#4 
+Alias (byte[]) plot_xlo#22 = (byte[]) plot_xlo#23 (byte[]) plot_xlo#4 
+Alias (byte[]) plot_yhi#21 = (byte[]) plot_yhi#22 (byte[]) plot_yhi#4 
+Alias (byte[]) plot_ylo#21 = (byte[]) plot_ylo#22 (byte[]) plot_ylo#4 
+Alias (byte[]) plot_bit#22 = (byte[]) plot_bit#23 (byte[]) plot_bit#4 
+Alias (byte) line_xdyi::x#2 = (byte~) line_xdyi::$2 (byte) line_xdyi::x#7 
 Alias (byte) line_xdyi::e#1 = (byte~) line_xdyi::$3 (byte) line_xdyi::e#4 
-Alias (byte) line_xdyi::y#1 = (byte~) line_xdyi::$6 
+Alias (byte) line_xdyi::y#2 = (byte~) line_xdyi::$6 
 Alias (byte) line_xdyi::e#2 = (byte~) line_xdyi::$7 
+Alias (byte) line_xdyd::e#0 = (byte~) line_xdyd::$0 
+Alias (byte) line_xdyd::x#3 = (byte) line_xdyd::x#4 
+Alias (byte) line_xdyd::e#3 = (byte) line_xdyd::e#5 
+Alias (byte) line_xdyd::yd#3 = (byte) line_xdyd::yd#4 (byte) line_xdyd::yd#6 
+Alias (byte) line_xdyd::xd#2 = (byte) line_xdyd::xd#4 (byte) line_xdyd::xd#3 
+Alias (byte) line_xdyd::x1#3 = (byte) line_xdyd::x1#4 (byte) line_xdyd::x1#5 
+Alias (byte) line_xdyd::y#3 = (byte) line_xdyd::y#7 (byte) line_xdyd::y#4 
+Alias (byte[]) plot_xhi#26 = (byte[]) plot_xhi#27 (byte[]) plot_xhi#3 
+Alias (byte[]) plot_xlo#26 = (byte[]) plot_xlo#27 (byte[]) plot_xlo#3 
+Alias (byte[]) plot_yhi#25 = (byte[]) plot_yhi#26 (byte[]) plot_yhi#3 
+Alias (byte[]) plot_ylo#25 = (byte[]) plot_ylo#26 (byte[]) plot_ylo#3 
+Alias (byte[]) plot_bit#26 = (byte[]) plot_bit#27 (byte[]) plot_bit#3 
+Alias (byte) line_xdyd::x#2 = (byte~) line_xdyd::$2 (byte) line_xdyd::x#7 
+Alias (byte) line_xdyd::e#1 = (byte~) line_xdyd::$3 (byte) line_xdyd::e#4 
+Alias (byte) line_xdyd::y#2 = (byte~) line_xdyd::$6 
+Alias (byte) line_xdyd::e#2 = (byte~) line_xdyd::$7 
+Alias (byte) line_ydxi::e#0 = (byte~) line_ydxi::$0 
+Alias (byte) line_ydxi::y#3 = (byte) line_ydxi::y#4 
+Alias (byte) line_ydxi::e#3 = (byte) line_ydxi::e#5 
+Alias (byte) line_ydxi::xd#3 = (byte) line_ydxi::xd#4 (byte) line_ydxi::xd#6 
+Alias (byte) line_ydxi::yd#2 = (byte) line_ydxi::yd#4 (byte) line_ydxi::yd#3 
+Alias (byte) line_ydxi::y1#3 = (byte) line_ydxi::y1#4 (byte) line_ydxi::y1#5 
+Alias (byte) line_ydxi::x#3 = (byte) line_ydxi::x#7 (byte) line_ydxi::x#4 
+Alias (byte[]) plot_xhi#30 = (byte[]) plot_xhi#31 (byte[]) plot_xhi#6 
+Alias (byte[]) plot_xlo#30 = (byte[]) plot_xlo#31 (byte[]) plot_xlo#6 
+Alias (byte[]) plot_yhi#29 = (byte[]) plot_yhi#30 (byte[]) plot_yhi#6 
+Alias (byte[]) plot_ylo#29 = (byte[]) plot_ylo#30 (byte[]) plot_ylo#6 
+Alias (byte[]) plot_bit#30 = (byte[]) plot_bit#31 (byte[]) plot_bit#6 
+Alias (byte) line_ydxi::y#2 = (byte~) line_ydxi::$2 (byte) line_ydxi::y#7 
+Alias (byte) line_ydxi::e#1 = (byte~) line_ydxi::$3 (byte) line_ydxi::e#4 
+Alias (byte) line_ydxi::x#2 = (byte~) line_ydxi::$6 
+Alias (byte) line_ydxi::e#2 = (byte~) line_ydxi::$7 
+Alias (byte) line_ydxd::e#0 = (byte~) line_ydxd::$0 
+Alias (byte) line_ydxd::y#3 = (byte) line_ydxd::y#4 
+Alias (byte) line_ydxd::e#3 = (byte) line_ydxd::e#5 
+Alias (byte) line_ydxd::xd#3 = (byte) line_ydxd::xd#4 (byte) line_ydxd::xd#6 
+Alias (byte) line_ydxd::yd#2 = (byte) line_ydxd::yd#4 (byte) line_ydxd::yd#3 
+Alias (byte) line_ydxd::y1#3 = (byte) line_ydxd::y1#4 (byte) line_ydxd::y1#5 
+Alias (byte) line_ydxd::x#3 = (byte) line_ydxd::x#7 (byte) line_ydxd::x#4 
+Alias (byte[]) plot_xhi#34 = (byte[]) plot_xhi#35 (byte[]) plot_xhi#5 
+Alias (byte[]) plot_xlo#34 = (byte[]) plot_xlo#35 (byte[]) plot_xlo#5 
+Alias (byte[]) plot_yhi#33 = (byte[]) plot_yhi#34 (byte[]) plot_yhi#5 
+Alias (byte[]) plot_ylo#33 = (byte[]) plot_ylo#34 (byte[]) plot_ylo#5 
+Alias (byte[]) plot_bit#34 = (byte[]) plot_bit#35 (byte[]) plot_bit#5 
+Alias (byte) line_ydxd::y#2 = (byte~) line_ydxd::$2 (byte) line_ydxd::y#7 
+Alias (byte) line_ydxd::e#1 = (byte~) line_ydxd::$3 (byte) line_ydxd::e#4 
+Alias (byte) line_ydxd::x#2 = (byte~) line_ydxd::$6 
+Alias (byte) line_ydxd::e#2 = (byte~) line_ydxd::$7 
 Alias (byte*) plot::plotter#0 = (byte~) plot::$4 
 Alias (byte) init_plot_tables::bit#1 = (byte~) init_plot_tables::$2 
 Alias (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#4 
-Alias (byte[]) plot_xlo#2 = (byte[]) plot_xlo#20 
+Alias (byte[]) plot_xlo#18 = (byte[]) plot_xlo#2 
 Alias (byte*) BITMAP#1 = (byte*) BITMAP#9 
-Alias (byte[]) plot_xhi#2 = (byte[]) plot_xhi#20 
-Alias (byte[]) plot_bit#2 = (byte[]) plot_bit#20 
-Alias (byte[]) plot_ylo#25 = (byte[]) plot_ylo#26 
-Alias (byte[]) plot_yhi#25 = (byte[]) plot_yhi#26 
-Alias (byte[]) plot_ylo#13 = (byte[]) plot_ylo#19 
-Alias (byte[]) plot_yhi#13 = (byte[]) plot_yhi#19 
+Alias (byte[]) plot_xhi#18 = (byte[]) plot_xhi#2 
+Alias (byte[]) plot_bit#18 = (byte[]) plot_bit#2 
+Alias (byte[]) plot_ylo#35 = (byte[]) plot_ylo#36 
+Alias (byte[]) plot_yhi#35 = (byte[]) plot_yhi#36 
+Alias (byte[]) plot_ylo#17 = (byte[]) plot_ylo#8 
+Alias (byte[]) plot_yhi#17 = (byte[]) plot_yhi#8 
 Alias (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#3 
 Alias (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#4 
-Alias (byte[]) plot_ylo#2 = (byte[]) plot_ylo#20 
-Alias (byte[]) plot_yhi#2 = (byte[]) plot_yhi#20 
+Alias (byte[]) plot_ylo#18 = (byte[]) plot_ylo#2 
+Alias (byte[]) plot_yhi#18 = (byte[]) plot_yhi#2 
 Alias (byte*) init_plot_tables::yoffs#1 = (byte*~) init_plot_tables::$13 
 Alias (byte*) SCREEN#1 = (byte*) SCREEN#3 
 Succesful SSA optimization Pass2AliasElimination
@@ -4471,8 +6813,8 @@ CONTROL FLOW GRAPH
   (byte[]) lines_x#0 ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y#0 ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt#0 ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((byte*) BGCOL#0) ← (byte) 0
   *((byte*) FGCOL#0) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM#0 | (byte) DEN#0
@@ -4488,11 +6830,11 @@ main::@3: scope:[main]  from main
 main::@4: scope:[main]  from main::@3
   to:main::@1
 main::@1: scope:[main]  from main::@4 main::@5
-  (byte[]) plot_bit#28 ← phi( main::@4/(byte[]) plot_bit#0 main::@5/(byte[]) plot_bit#28 )
-  (byte[]) plot_ylo#29 ← phi( main::@4/(byte[]) plot_ylo#0 main::@5/(byte[]) plot_ylo#29 )
-  (byte[]) plot_yhi#29 ← phi( main::@4/(byte[]) plot_yhi#0 main::@5/(byte[]) plot_yhi#29 )
-  (byte[]) plot_xlo#28 ← phi( main::@4/(byte[]) plot_xlo#0 main::@5/(byte[]) plot_xlo#28 )
-  (byte[]) plot_xhi#28 ← phi( main::@4/(byte[]) plot_xhi#0 main::@5/(byte[]) plot_xhi#28 )
+  (byte[]) plot_bit#45 ← phi( main::@4/(byte[]) plot_bit#0 main::@5/(byte[]) plot_bit#45 )
+  (byte[]) plot_ylo#49 ← phi( main::@4/(byte[]) plot_ylo#0 main::@5/(byte[]) plot_ylo#49 )
+  (byte[]) plot_yhi#49 ← phi( main::@4/(byte[]) plot_yhi#0 main::@5/(byte[]) plot_yhi#49 )
+  (byte[]) plot_xlo#45 ← phi( main::@4/(byte[]) plot_xlo#0 main::@5/(byte[]) plot_xlo#45 )
+  (byte[]) plot_xhi#45 ← phi( main::@4/(byte[]) plot_xhi#0 main::@5/(byte[]) plot_xhi#45 )
   (byte) lines_cnt#3 ← phi( main::@4/(byte) lines_cnt#0 main::@5/(byte) lines_cnt#3 )
   (byte[]) lines_y#2 ← phi( main::@4/(byte[]) lines_y#0 main::@5/(byte[]) lines_y#2 )
   (byte[]) lines_x#2 ← phi( main::@4/(byte[]) lines_x#0 main::@5/(byte[]) lines_x#2 )
@@ -4508,11 +6850,11 @@ lines: scope:[lines]  from main::@1
   (byte) lines::l#0 ← (byte) 0
   to:lines::@1
 lines::@1: scope:[lines]  from lines lines::@3
-  (byte[]) plot_bit#10 ← phi( lines/(byte[]) plot_bit#28 lines::@3/(byte[]) plot_bit#10 )
-  (byte[]) plot_ylo#10 ← phi( lines/(byte[]) plot_ylo#29 lines::@3/(byte[]) plot_ylo#10 )
-  (byte[]) plot_yhi#10 ← phi( lines/(byte[]) plot_yhi#29 lines::@3/(byte[]) plot_yhi#10 )
-  (byte[]) plot_xlo#10 ← phi( lines/(byte[]) plot_xlo#28 lines::@3/(byte[]) plot_xlo#10 )
-  (byte[]) plot_xhi#10 ← phi( lines/(byte[]) plot_xhi#28 lines::@3/(byte[]) plot_xhi#10 )
+  (byte[]) plot_bit#20 ← phi( lines/(byte[]) plot_bit#45 lines::@3/(byte[]) plot_bit#20 )
+  (byte[]) plot_ylo#19 ← phi( lines/(byte[]) plot_ylo#49 lines::@3/(byte[]) plot_ylo#19 )
+  (byte[]) plot_yhi#19 ← phi( lines/(byte[]) plot_yhi#49 lines::@3/(byte[]) plot_yhi#19 )
+  (byte[]) plot_xlo#20 ← phi( lines/(byte[]) plot_xlo#45 lines::@3/(byte[]) plot_xlo#20 )
+  (byte[]) plot_xhi#20 ← phi( lines/(byte[]) plot_xhi#45 lines::@3/(byte[]) plot_xhi#20 )
   (byte) lines_cnt#1 ← phi( lines/(byte) lines_cnt#3 lines::@3/(byte) lines_cnt#1 )
   (byte[]) lines_y#1 ← phi( lines/(byte[]) lines_y#2 lines::@3/(byte[]) lines_y#1 )
   (byte) lines::l#2 ← phi( lines/(byte) lines::l#0 lines::@3/(byte) lines::l#1 )
@@ -4540,142 +6882,357 @@ lines::@return: scope:[lines]  from lines::@3
 line: scope:[line]  from lines::@1
   (boolean~) line::$1 ← (byte) line::x0#0 >= (byte) line::x1#0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  (boolean~) line::$15 ← (byte) line::y0#0 >= (byte) line::y1#0
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  (boolean~) line::$17 ← (byte) line::y0#0 >= (byte) line::y1#0
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   (boolean~) line::$4 ← (byte) line::y0#0 >= (byte) line::y1#0
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  (boolean~) line::$7 ← (byte) line::yd#0 >= (byte) line::xd#1
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  (boolean~) line::$12 ← (byte) line::yd#0 >= (byte) line::xd#1
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  (boolean~) line::$7 ← (byte) line::yd#1 >= (byte) line::xd#1
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  (boolean~) line::$25 ← (byte) line::yd#10 >= (byte) line::xd#0
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  (boolean~) line::$20 ← (byte) line::yd#3 >= (byte) line::xd#0
+  if((boolean~) line::$20) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte[]) plot_bit#9 ← phi( line::@17/(byte[]) plot_bit#20 line::@27/(byte[]) plot_bit#20 )
+  (byte[]) plot_ylo#9 ← phi( line::@17/(byte[]) plot_ylo#19 line::@27/(byte[]) plot_ylo#19 )
+  (byte[]) plot_yhi#9 ← phi( line::@17/(byte[]) plot_yhi#19 line::@27/(byte[]) plot_yhi#19 )
+  (byte[]) plot_xlo#9 ← phi( line::@17/(byte[]) plot_xlo#20 line::@27/(byte[]) plot_xlo#20 )
+  (byte[]) plot_xhi#9 ← phi( line::@17/(byte[]) plot_xhi#20 line::@27/(byte[]) plot_xhi#20 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
-  (byte) line_xdyi::x1#2 ← phi( line_xdyi/(byte) line_xdyi::x1#0 line_xdyi::@2/(byte) line_xdyi::x1#1 )
-  (byte[]) plot_bit#11 ← phi( line_xdyi/(byte[]) plot_bit#10 line_xdyi::@2/(byte[]) plot_bit#18 )
-  (byte[]) plot_ylo#11 ← phi( line_xdyi/(byte[]) plot_ylo#10 line_xdyi::@2/(byte[]) plot_ylo#18 )
-  (byte[]) plot_yhi#11 ← phi( line_xdyi/(byte[]) plot_yhi#10 line_xdyi::@2/(byte[]) plot_yhi#18 )
-  (byte[]) plot_xlo#11 ← phi( line_xdyi/(byte[]) plot_xlo#10 line_xdyi::@2/(byte[]) plot_xlo#18 )
-  (byte[]) plot_xhi#11 ← phi( line_xdyi/(byte[]) plot_xhi#10 line_xdyi::@2/(byte[]) plot_xhi#18 )
-  (byte) line_xdyi::xd#1 ← phi( line_xdyi/(byte) line_xdyi::xd#0 line_xdyi::@2/(byte) line_xdyi::xd#5 )
-  (byte) line_xdyi::yd#2 ← phi( line_xdyi/(byte) line_xdyi::yd#0 line_xdyi::@2/(byte) line_xdyi::yd#4 )
+  (byte) line_xdyi::x1#3 ← phi( line_xdyi/(byte) line_xdyi::x1#6 line_xdyi::@2/(byte) line_xdyi::x1#2 )
+  (byte[]) plot_bit#22 ← phi( line_xdyi/(byte[]) plot_bit#9 line_xdyi::@2/(byte[]) plot_bit#10 )
+  (byte[]) plot_ylo#21 ← phi( line_xdyi/(byte[]) plot_ylo#9 line_xdyi::@2/(byte[]) plot_ylo#10 )
+  (byte[]) plot_yhi#21 ← phi( line_xdyi/(byte[]) plot_yhi#9 line_xdyi::@2/(byte[]) plot_yhi#10 )
+  (byte[]) plot_xlo#22 ← phi( line_xdyi/(byte[]) plot_xlo#9 line_xdyi::@2/(byte[]) plot_xlo#10 )
+  (byte[]) plot_xhi#22 ← phi( line_xdyi/(byte[]) plot_xhi#9 line_xdyi::@2/(byte[]) plot_xhi#10 )
+  (byte) line_xdyi::xd#2 ← phi( line_xdyi/(byte) line_xdyi::xd#5 line_xdyi::@2/(byte) line_xdyi::xd#6 )
+  (byte) line_xdyi::yd#3 ← phi( line_xdyi/(byte) line_xdyi::yd#2 line_xdyi::@2/(byte) line_xdyi::yd#5 )
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#4 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#5 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
-  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#1 >= (byte) line_xdyi::e#1
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#3
+  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#2 >= (byte) line_xdyi::e#1
   if((boolean~) line_xdyi::$5) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
-  (byte[]) plot_bit#18 ← phi( line_xdyi::@3/(byte[]) plot_bit#11 line_xdyi::@5/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#18 ← phi( line_xdyi::@3/(byte[]) plot_ylo#11 line_xdyi::@5/(byte[]) plot_ylo#11 )
-  (byte[]) plot_yhi#18 ← phi( line_xdyi::@3/(byte[]) plot_yhi#11 line_xdyi::@5/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#18 ← phi( line_xdyi::@3/(byte[]) plot_xlo#11 line_xdyi::@5/(byte[]) plot_xlo#11 )
-  (byte[]) plot_xhi#18 ← phi( line_xdyi::@3/(byte[]) plot_xhi#11 line_xdyi::@5/(byte[]) plot_xhi#11 )
-  (byte) line_xdyi::xd#5 ← phi( line_xdyi::@3/(byte) line_xdyi::xd#1 line_xdyi::@5/(byte) line_xdyi::xd#1 )
-  (byte) line_xdyi::yd#4 ← phi( line_xdyi::@3/(byte) line_xdyi::yd#2 line_xdyi::@5/(byte) line_xdyi::yd#2 )
+  (byte[]) plot_bit#10 ← phi( line_xdyi::@3/(byte[]) plot_bit#22 line_xdyi::@5/(byte[]) plot_bit#22 )
+  (byte[]) plot_ylo#10 ← phi( line_xdyi::@3/(byte[]) plot_ylo#21 line_xdyi::@5/(byte[]) plot_ylo#21 )
+  (byte[]) plot_yhi#10 ← phi( line_xdyi::@3/(byte[]) plot_yhi#21 line_xdyi::@5/(byte[]) plot_yhi#21 )
+  (byte[]) plot_xlo#10 ← phi( line_xdyi::@3/(byte[]) plot_xlo#22 line_xdyi::@5/(byte[]) plot_xlo#22 )
+  (byte[]) plot_xhi#10 ← phi( line_xdyi::@3/(byte[]) plot_xhi#22 line_xdyi::@5/(byte[]) plot_xhi#22 )
+  (byte) line_xdyi::xd#6 ← phi( line_xdyi::@3/(byte) line_xdyi::xd#2 line_xdyi::@5/(byte) line_xdyi::xd#2 )
+  (byte) line_xdyi::yd#5 ← phi( line_xdyi::@3/(byte) line_xdyi::yd#3 line_xdyi::@5/(byte) line_xdyi::yd#3 )
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte) line_xdyi::x#4 ← phi( line_xdyi::@3/(byte) line_xdyi::x#1 line_xdyi::@5/(byte) line_xdyi::x#1 )
-  (byte) line_xdyi::x1#1 ← phi( line_xdyi::@3/(byte) line_xdyi::x1#2 line_xdyi::@5/(byte) line_xdyi::x1#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#1 + (byte) 1
-  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#4 < (byte~) line_xdyi::$8
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte) line_xdyi::x#5 ← phi( line_xdyi::@3/(byte) line_xdyi::x#2 line_xdyi::@5/(byte) line_xdyi::x#2 )
+  (byte) line_xdyi::x1#2 ← phi( line_xdyi::@3/(byte) line_xdyi::x1#3 line_xdyi::@5/(byte) line_xdyi::x1#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#2 + (byte) 1
+  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#5 < (byte~) line_xdyi::$8
   if((boolean~) line_xdyi::$9) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#1
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#2
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte[]) plot_bit#1 ← phi( line::@15/(byte[]) plot_bit#10 line::@17/(byte[]) plot_bit#10 line::@19/(byte[]) plot_bit#10 line::@2/(byte[]) plot_bit#10 line::@22/(byte[]) plot_bit#10 line::@24/(byte[]) plot_bit#10 line::@3/(byte[]) plot_bit#10 line::@7/(byte[]) plot_bit#10 line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#1 ← phi( line::@15/(byte[]) plot_ylo#10 line::@17/(byte[]) plot_ylo#10 line::@19/(byte[]) plot_ylo#10 line::@2/(byte[]) plot_ylo#10 line::@22/(byte[]) plot_ylo#10 line::@24/(byte[]) plot_ylo#10 line::@3/(byte[]) plot_ylo#10 line::@7/(byte[]) plot_ylo#10 line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte[]) plot_yhi#1 ← phi( line::@15/(byte[]) plot_yhi#10 line::@17/(byte[]) plot_yhi#10 line::@19/(byte[]) plot_yhi#10 line::@2/(byte[]) plot_yhi#10 line::@22/(byte[]) plot_yhi#10 line::@24/(byte[]) plot_yhi#10 line::@3/(byte[]) plot_yhi#10 line::@7/(byte[]) plot_yhi#10 line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#1 ← phi( line::@15/(byte[]) plot_xlo#10 line::@17/(byte[]) plot_xlo#10 line::@19/(byte[]) plot_xlo#10 line::@2/(byte[]) plot_xlo#10 line::@22/(byte[]) plot_xlo#10 line::@24/(byte[]) plot_xlo#10 line::@3/(byte[]) plot_xlo#10 line::@7/(byte[]) plot_xlo#10 line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte[]) plot_xhi#1 ← phi( line::@15/(byte[]) plot_xhi#10 line::@17/(byte[]) plot_xhi#10 line::@19/(byte[]) plot_xhi#10 line::@2/(byte[]) plot_xhi#10 line::@22/(byte[]) plot_xhi#10 line::@24/(byte[]) plot_xhi#10 line::@3/(byte[]) plot_xhi#10 line::@7/(byte[]) plot_xhi#10 line_xdyi::@1/(byte[]) plot_xhi#11 )
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte[]) plot_bit#11 ← phi( line::@20/(byte[]) plot_bit#20 line::@24/(byte[]) plot_bit#20 )
+  (byte[]) plot_ylo#11 ← phi( line::@20/(byte[]) plot_ylo#19 line::@24/(byte[]) plot_ylo#19 )
+  (byte[]) plot_yhi#11 ← phi( line::@20/(byte[]) plot_yhi#19 line::@24/(byte[]) plot_yhi#19 )
+  (byte[]) plot_xlo#11 ← phi( line::@20/(byte[]) plot_xlo#20 line::@24/(byte[]) plot_xlo#20 )
+  (byte[]) plot_xhi#11 ← phi( line::@20/(byte[]) plot_xhi#20 line::@24/(byte[]) plot_xhi#20 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::x1#3 ← phi( line_xdyd/(byte) line_xdyd::x1#6 line_xdyd::@2/(byte) line_xdyd::x1#2 )
+  (byte[]) plot_bit#26 ← phi( line_xdyd/(byte[]) plot_bit#11 line_xdyd::@2/(byte[]) plot_bit#12 )
+  (byte[]) plot_ylo#25 ← phi( line_xdyd/(byte[]) plot_ylo#11 line_xdyd::@2/(byte[]) plot_ylo#12 )
+  (byte[]) plot_yhi#25 ← phi( line_xdyd/(byte[]) plot_yhi#11 line_xdyd::@2/(byte[]) plot_yhi#12 )
+  (byte[]) plot_xlo#26 ← phi( line_xdyd/(byte[]) plot_xlo#11 line_xdyd::@2/(byte[]) plot_xlo#12 )
+  (byte[]) plot_xhi#26 ← phi( line_xdyd/(byte[]) plot_xhi#11 line_xdyd::@2/(byte[]) plot_xhi#12 )
+  (byte) line_xdyd::xd#2 ← phi( line_xdyd/(byte) line_xdyd::xd#5 line_xdyd::@2/(byte) line_xdyd::xd#6 )
+  (byte) line_xdyd::yd#3 ← phi( line_xdyd/(byte) line_xdyd::yd#2 line_xdyd::@2/(byte) line_xdyd::yd#5 )
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#5 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#3
+  (boolean~) line_xdyd::$5 ← (byte) line_xdyd::xd#2 >= (byte) line_xdyd::e#1
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte[]) plot_bit#12 ← phi( line_xdyd::@3/(byte[]) plot_bit#26 line_xdyd::@5/(byte[]) plot_bit#26 )
+  (byte[]) plot_ylo#12 ← phi( line_xdyd::@3/(byte[]) plot_ylo#25 line_xdyd::@5/(byte[]) plot_ylo#25 )
+  (byte[]) plot_yhi#12 ← phi( line_xdyd::@3/(byte[]) plot_yhi#25 line_xdyd::@5/(byte[]) plot_yhi#25 )
+  (byte[]) plot_xlo#12 ← phi( line_xdyd::@3/(byte[]) plot_xlo#26 line_xdyd::@5/(byte[]) plot_xlo#26 )
+  (byte[]) plot_xhi#12 ← phi( line_xdyd::@3/(byte[]) plot_xhi#26 line_xdyd::@5/(byte[]) plot_xhi#26 )
+  (byte) line_xdyd::xd#6 ← phi( line_xdyd::@3/(byte) line_xdyd::xd#2 line_xdyd::@5/(byte) line_xdyd::xd#2 )
+  (byte) line_xdyd::yd#5 ← phi( line_xdyd::@3/(byte) line_xdyd::yd#3 line_xdyd::@5/(byte) line_xdyd::yd#3 )
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte) line_xdyd::x#5 ← phi( line_xdyd::@3/(byte) line_xdyd::x#2 line_xdyd::@5/(byte) line_xdyd::x#2 )
+  (byte) line_xdyd::x1#2 ← phi( line_xdyd::@3/(byte) line_xdyd::x1#3 line_xdyd::@5/(byte) line_xdyd::x1#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#2 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x#5 < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#2
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte[]) plot_bit#13 ← phi( line::@13/(byte[]) plot_bit#20 line::@3/(byte[]) plot_bit#20 )
+  (byte[]) plot_ylo#13 ← phi( line::@13/(byte[]) plot_ylo#19 line::@3/(byte[]) plot_ylo#19 )
+  (byte[]) plot_yhi#13 ← phi( line::@13/(byte[]) plot_yhi#19 line::@3/(byte[]) plot_yhi#19 )
+  (byte[]) plot_xlo#13 ← phi( line::@13/(byte[]) plot_xlo#20 line::@3/(byte[]) plot_xlo#20 )
+  (byte[]) plot_xhi#13 ← phi( line::@13/(byte[]) plot_xhi#20 line::@3/(byte[]) plot_xhi#20 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::y1#3 ← phi( line_ydxi/(byte) line_ydxi::y1#6 line_ydxi::@2/(byte) line_ydxi::y1#2 )
+  (byte[]) plot_bit#30 ← phi( line_ydxi/(byte[]) plot_bit#13 line_ydxi::@2/(byte[]) plot_bit#14 )
+  (byte[]) plot_ylo#29 ← phi( line_ydxi/(byte[]) plot_ylo#13 line_ydxi::@2/(byte[]) plot_ylo#14 )
+  (byte[]) plot_yhi#29 ← phi( line_ydxi/(byte[]) plot_yhi#13 line_ydxi::@2/(byte[]) plot_yhi#14 )
+  (byte[]) plot_xlo#30 ← phi( line_ydxi/(byte[]) plot_xlo#13 line_ydxi::@2/(byte[]) plot_xlo#14 )
+  (byte[]) plot_xhi#30 ← phi( line_ydxi/(byte[]) plot_xhi#13 line_ydxi::@2/(byte[]) plot_xhi#14 )
+  (byte) line_ydxi::yd#2 ← phi( line_ydxi/(byte) line_ydxi::yd#5 line_ydxi::@2/(byte) line_ydxi::yd#6 )
+  (byte) line_ydxi::xd#3 ← phi( line_ydxi/(byte) line_ydxi::xd#2 line_ydxi::@2/(byte) line_ydxi::xd#5 )
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#5 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#3
+  (boolean~) line_ydxi::$5 ← (byte) line_ydxi::yd#2 >= (byte) line_ydxi::e#1
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte[]) plot_bit#14 ← phi( line_ydxi::@3/(byte[]) plot_bit#30 line_ydxi::@5/(byte[]) plot_bit#30 )
+  (byte[]) plot_ylo#14 ← phi( line_ydxi::@3/(byte[]) plot_ylo#29 line_ydxi::@5/(byte[]) plot_ylo#29 )
+  (byte[]) plot_yhi#14 ← phi( line_ydxi::@3/(byte[]) plot_yhi#29 line_ydxi::@5/(byte[]) plot_yhi#29 )
+  (byte[]) plot_xlo#14 ← phi( line_ydxi::@3/(byte[]) plot_xlo#30 line_ydxi::@5/(byte[]) plot_xlo#30 )
+  (byte[]) plot_xhi#14 ← phi( line_ydxi::@3/(byte[]) plot_xhi#30 line_ydxi::@5/(byte[]) plot_xhi#30 )
+  (byte) line_ydxi::yd#6 ← phi( line_ydxi::@3/(byte) line_ydxi::yd#2 line_ydxi::@5/(byte) line_ydxi::yd#2 )
+  (byte) line_ydxi::xd#5 ← phi( line_ydxi::@3/(byte) line_ydxi::xd#3 line_ydxi::@5/(byte) line_ydxi::xd#3 )
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte) line_ydxi::y#5 ← phi( line_ydxi::@3/(byte) line_ydxi::y#2 line_ydxi::@5/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::y1#2 ← phi( line_ydxi::@3/(byte) line_ydxi::y1#3 line_ydxi::@5/(byte) line_ydxi::y1#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#2 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y#5 < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#2
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte[]) plot_bit#15 ← phi( line::@10/(byte[]) plot_bit#20 line::@6/(byte[]) plot_bit#20 )
+  (byte[]) plot_ylo#15 ← phi( line::@10/(byte[]) plot_ylo#19 line::@6/(byte[]) plot_ylo#19 )
+  (byte[]) plot_yhi#15 ← phi( line::@10/(byte[]) plot_yhi#19 line::@6/(byte[]) plot_yhi#19 )
+  (byte[]) plot_xlo#15 ← phi( line::@10/(byte[]) plot_xlo#20 line::@6/(byte[]) plot_xlo#20 )
+  (byte[]) plot_xhi#15 ← phi( line::@10/(byte[]) plot_xhi#20 line::@6/(byte[]) plot_xhi#20 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::y1#3 ← phi( line_ydxd/(byte) line_ydxd::y1#6 line_ydxd::@2/(byte) line_ydxd::y1#2 )
+  (byte[]) plot_bit#34 ← phi( line_ydxd/(byte[]) plot_bit#15 line_ydxd::@2/(byte[]) plot_bit#16 )
+  (byte[]) plot_ylo#33 ← phi( line_ydxd/(byte[]) plot_ylo#15 line_ydxd::@2/(byte[]) plot_ylo#16 )
+  (byte[]) plot_yhi#33 ← phi( line_ydxd/(byte[]) plot_yhi#15 line_ydxd::@2/(byte[]) plot_yhi#16 )
+  (byte[]) plot_xlo#34 ← phi( line_ydxd/(byte[]) plot_xlo#15 line_ydxd::@2/(byte[]) plot_xlo#16 )
+  (byte[]) plot_xhi#34 ← phi( line_ydxd/(byte[]) plot_xhi#15 line_ydxd::@2/(byte[]) plot_xhi#16 )
+  (byte) line_ydxd::yd#2 ← phi( line_ydxd/(byte) line_ydxd::yd#5 line_ydxd::@2/(byte) line_ydxd::yd#6 )
+  (byte) line_ydxd::xd#3 ← phi( line_ydxd/(byte) line_ydxd::xd#2 line_ydxd::@2/(byte) line_ydxd::xd#5 )
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#5 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#3
+  (boolean~) line_ydxd::$5 ← (byte) line_ydxd::yd#2 >= (byte) line_ydxd::e#1
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte[]) plot_bit#16 ← phi( line_ydxd::@3/(byte[]) plot_bit#34 line_ydxd::@5/(byte[]) plot_bit#34 )
+  (byte[]) plot_ylo#16 ← phi( line_ydxd::@3/(byte[]) plot_ylo#33 line_ydxd::@5/(byte[]) plot_ylo#33 )
+  (byte[]) plot_yhi#16 ← phi( line_ydxd::@3/(byte[]) plot_yhi#33 line_ydxd::@5/(byte[]) plot_yhi#33 )
+  (byte[]) plot_xlo#16 ← phi( line_ydxd::@3/(byte[]) plot_xlo#34 line_ydxd::@5/(byte[]) plot_xlo#34 )
+  (byte[]) plot_xhi#16 ← phi( line_ydxd::@3/(byte[]) plot_xhi#34 line_ydxd::@5/(byte[]) plot_xhi#34 )
+  (byte) line_ydxd::yd#6 ← phi( line_ydxd::@3/(byte) line_ydxd::yd#2 line_ydxd::@5/(byte) line_ydxd::yd#2 )
+  (byte) line_ydxd::xd#5 ← phi( line_ydxd::@3/(byte) line_ydxd::xd#3 line_ydxd::@5/(byte) line_ydxd::xd#3 )
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte) line_ydxd::y#5 ← phi( line_ydxd::@3/(byte) line_ydxd::y#2 line_ydxd::@5/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::y1#2 ← phi( line_ydxd::@3/(byte) line_ydxd::y1#3 line_ydxd::@5/(byte) line_ydxd::y1#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#2 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y#5 < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#2
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte[]) plot_bit#1 ← phi( line_xdyd::@1/(byte[]) plot_bit#26 line_xdyi::@1/(byte[]) plot_bit#22 line_ydxd::@1/(byte[]) plot_bit#34 line_ydxi::@1/(byte[]) plot_bit#30 )
+  (byte[]) plot_ylo#1 ← phi( line_xdyd::@1/(byte[]) plot_ylo#25 line_xdyi::@1/(byte[]) plot_ylo#21 line_ydxd::@1/(byte[]) plot_ylo#33 line_ydxi::@1/(byte[]) plot_ylo#29 )
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte[]) plot_yhi#1 ← phi( line_xdyd::@1/(byte[]) plot_yhi#25 line_xdyi::@1/(byte[]) plot_yhi#21 line_ydxd::@1/(byte[]) plot_yhi#33 line_ydxi::@1/(byte[]) plot_yhi#29 )
+  (byte[]) plot_xlo#1 ← phi( line_xdyd::@1/(byte[]) plot_xlo#26 line_xdyi::@1/(byte[]) plot_xlo#22 line_ydxd::@1/(byte[]) plot_xlo#34 line_ydxi::@1/(byte[]) plot_xlo#30 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte[]) plot_xhi#1 ← phi( line_xdyd::@1/(byte[]) plot_xhi#26 line_xdyi::@1/(byte[]) plot_xhi#22 line_ydxd::@1/(byte[]) plot_xhi#34 line_ydxi::@1/(byte[]) plot_xhi#30 )
   (byte*) plot::plotter_x#0 ← (byte) 0
   (byte*) plot::plotter_y#0 ← (byte) 0
-  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#9
+  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -4687,31 +7244,31 @@ init_plot_tables: scope:[init_plot_tables]  from main::@3
   (byte) init_plot_tables::x#0 ← (byte) 0
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@2
-  (byte[]) plot_yhi#25 ← phi( init_plot_tables/(byte[]) plot_yhi#0 init_plot_tables::@2/(byte[]) plot_yhi#13 )
-  (byte[]) plot_ylo#25 ← phi( init_plot_tables/(byte[]) plot_ylo#0 init_plot_tables::@2/(byte[]) plot_ylo#13 )
-  (byte[]) plot_bit#2 ← phi( init_plot_tables/(byte[]) plot_bit#0 init_plot_tables::@2/(byte[]) plot_bit#13 )
+  (byte[]) plot_yhi#35 ← phi( init_plot_tables/(byte[]) plot_yhi#0 init_plot_tables::@2/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#35 ← phi( init_plot_tables/(byte[]) plot_ylo#0 init_plot_tables::@2/(byte[]) plot_ylo#17 )
+  (byte[]) plot_bit#18 ← phi( init_plot_tables/(byte[]) plot_bit#0 init_plot_tables::@2/(byte[]) plot_bit#8 )
   (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) init_plot_tables::bit#0 init_plot_tables::@2/(byte) init_plot_tables::bit#4 )
-  (byte[]) plot_xhi#2 ← phi( init_plot_tables/(byte[]) plot_xhi#0 init_plot_tables::@2/(byte[]) plot_xhi#13 )
+  (byte[]) plot_xhi#18 ← phi( init_plot_tables/(byte[]) plot_xhi#0 init_plot_tables::@2/(byte[]) plot_xhi#8 )
   (byte*) BITMAP#1 ← phi( init_plot_tables/(byte*) BITMAP#0 init_plot_tables::@2/(byte*) BITMAP#5 )
-  (byte[]) plot_xlo#2 ← phi( init_plot_tables/(byte[]) plot_xlo#0 init_plot_tables::@2/(byte[]) plot_xlo#13 )
+  (byte[]) plot_xlo#18 ← phi( init_plot_tables/(byte[]) plot_xlo#0 init_plot_tables::@2/(byte[]) plot_xlo#8 )
   (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) init_plot_tables::x#0 init_plot_tables::@2/(byte) init_plot_tables::x#1 )
   (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248
-  *((byte[]) plot_xlo#2 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0
+  *((byte[]) plot_xlo#18 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0
   (byte~) init_plot_tables::$1 ← > (byte*) BITMAP#1
-  *((byte[]) plot_xhi#2 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$1
-  *((byte[]) plot_bit#2 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3
+  *((byte[]) plot_xhi#18 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$1
+  *((byte[]) plot_bit#18 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3
   (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1
   (boolean~) init_plot_tables::$4 ← (byte) init_plot_tables::bit#1 != (byte) 0
   if((boolean~) init_plot_tables::$4) goto init_plot_tables::@2
   to:init_plot_tables::@5
 init_plot_tables::@2: scope:[init_plot_tables]  from init_plot_tables::@1 init_plot_tables::@5
-  (byte[]) plot_yhi#13 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#25 init_plot_tables::@5/(byte[]) plot_yhi#25 )
-  (byte[]) plot_ylo#13 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#25 init_plot_tables::@5/(byte[]) plot_ylo#25 )
-  (byte[]) plot_bit#13 ← phi( init_plot_tables::@1/(byte[]) plot_bit#2 init_plot_tables::@5/(byte[]) plot_bit#2 )
+  (byte[]) plot_yhi#17 ← phi( init_plot_tables::@1/(byte[]) plot_yhi#35 init_plot_tables::@5/(byte[]) plot_yhi#35 )
+  (byte[]) plot_ylo#17 ← phi( init_plot_tables::@1/(byte[]) plot_ylo#35 init_plot_tables::@5/(byte[]) plot_ylo#35 )
+  (byte[]) plot_bit#8 ← phi( init_plot_tables::@1/(byte[]) plot_bit#18 init_plot_tables::@5/(byte[]) plot_bit#18 )
   (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@1/(byte) init_plot_tables::bit#1 init_plot_tables::@5/(byte) init_plot_tables::bit#2 )
-  (byte[]) plot_xhi#13 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#2 init_plot_tables::@5/(byte[]) plot_xhi#2 )
+  (byte[]) plot_xhi#8 ← phi( init_plot_tables::@1/(byte[]) plot_xhi#18 init_plot_tables::@5/(byte[]) plot_xhi#18 )
   (byte*) BITMAP#5 ← phi( init_plot_tables::@1/(byte*) BITMAP#1 init_plot_tables::@5/(byte*) BITMAP#1 )
-  (byte[]) plot_xlo#13 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#2 init_plot_tables::@5/(byte[]) plot_xlo#2 )
+  (byte[]) plot_xlo#8 ← phi( init_plot_tables::@1/(byte[]) plot_xlo#18 init_plot_tables::@5/(byte[]) plot_xlo#18 )
   (byte) init_plot_tables::x#3 ← phi( init_plot_tables::@1/(byte) init_plot_tables::x#2 init_plot_tables::@5/(byte) init_plot_tables::x#2 )
   (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#3
   (boolean~) init_plot_tables::$5 ← (byte) init_plot_tables::x#1 != (byte) 0
@@ -4725,23 +7282,23 @@ init_plot_tables::@6: scope:[init_plot_tables]  from init_plot_tables::@2
   (byte) init_plot_tables::y#0 ← (byte) 0
   to:init_plot_tables::@3
 init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_plot_tables::@6
-  (byte[]) plot_yhi#2 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#12 init_plot_tables::@6/(byte[]) plot_yhi#13 )
-  (byte[]) plot_ylo#2 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#12 init_plot_tables::@6/(byte[]) plot_ylo#13 )
+  (byte[]) plot_yhi#18 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#7 init_plot_tables::@6/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#18 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#7 init_plot_tables::@6/(byte[]) plot_ylo#17 )
   (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@6/(byte*) init_plot_tables::yoffs#0 )
   (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@6/(byte) init_plot_tables::y#0 )
   (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7
   (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2
   (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7
-  *((byte[]) plot_ylo#2 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8
+  *((byte[]) plot_ylo#18 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8
   (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2
-  *((byte[]) plot_yhi#2 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9
+  *((byte[]) plot_yhi#18 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9
   (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7
   (boolean~) init_plot_tables::$12 ← (byte~) init_plot_tables::$10 != (byte) 7
   if((boolean~) init_plot_tables::$12) goto init_plot_tables::@4
   to:init_plot_tables::@7
 init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_plot_tables::@7
-  (byte[]) plot_yhi#12 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#2 init_plot_tables::@7/(byte[]) plot_yhi#2 )
-  (byte[]) plot_ylo#12 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#2 init_plot_tables::@7/(byte[]) plot_ylo#2 )
+  (byte[]) plot_yhi#7 ← phi( init_plot_tables::@3/(byte[]) plot_yhi#18 init_plot_tables::@7/(byte[]) plot_yhi#18 )
+  (byte[]) plot_ylo#7 ← phi( init_plot_tables::@3/(byte[]) plot_ylo#18 init_plot_tables::@7/(byte[]) plot_ylo#18 )
   (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 init_plot_tables::@7/(byte*) init_plot_tables::yoffs#1 )
   (byte) init_plot_tables::y#3 ← phi( init_plot_tables::@3/(byte) init_plot_tables::y#2 init_plot_tables::@7/(byte) init_plot_tables::y#2 )
   (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#3
@@ -4782,60 +7339,117 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Not aliassing across scopes: line::x0#0 lines::$0
 Not aliassing across scopes: line::x1#0 lines::$2
 Not aliassing across scopes: line::y0#0 lines::$3
 Not aliassing across scopes: line::y1#0 lines::$5
-Not aliassing across scopes: plot::x#0 line::x0#0
-Not aliassing across scopes: plot::y#0 line::y0#0
-Not aliassing across scopes: plot::x#1 line::x1#0
-Not aliassing across scopes: plot::y#1 line::y1#0
-Not aliassing across scopes: plot::x#2 line::x0#0
-Not aliassing across scopes: plot::y#2 line::y0#0
-Not aliassing across scopes: plot::x#3 line::x1#0
-Not aliassing across scopes: plot::y#3 line::y1#0
+Not aliassing across scopes: line_ydxi::y#0 line::y0#0
+Not aliassing across scopes: line_ydxi::x#0 line::x0#0
+Not aliassing across scopes: line_ydxi::y1#0 line::y1#0
+Not aliassing across scopes: line_ydxi::yd#0 line::yd#1
+Not aliassing across scopes: line_ydxi::xd#0 line::xd#1
 Not aliassing across scopes: line_xdyi::x#0 line::x0#0
 Not aliassing across scopes: line_xdyi::y#0 line::y0#0
 Not aliassing across scopes: line_xdyi::x1#0 line::x1#0
 Not aliassing across scopes: line_xdyi::xd#0 line::xd#1
-Not aliassing across scopes: line_xdyi::yd#0 line::yd#0
-Not aliassing across scopes: plot::x#4 line::x0#0
-Not aliassing across scopes: plot::y#4 line::y0#0
-Not aliassing across scopes: plot::x#5 line::x1#0
-Not aliassing across scopes: plot::y#5 line::y1#0
-Not aliassing across scopes: plot::x#6 line::x0#0
-Not aliassing across scopes: plot::y#6 line::y0#0
-Not aliassing across scopes: plot::x#7 line::x1#0
-Not aliassing across scopes: plot::y#7 line::y1#0
-Not aliassing across scopes: plot::x#8 line_xdyi::x#2
-Not aliassing across scopes: plot::y#8 line_xdyi::y#2
+Not aliassing across scopes: line_xdyi::yd#0 line::yd#1
+Not aliassing across scopes: line_ydxd::y#0 line::y1#0
+Not aliassing across scopes: line_ydxd::x#0 line::x1#0
+Not aliassing across scopes: line_ydxd::y1#0 line::y0#0
+Not aliassing across scopes: line_ydxd::yd#0 line::yd#0
+Not aliassing across scopes: line_ydxd::xd#0 line::xd#1
+Not aliassing across scopes: line_xdyd::x#0 line::x0#0
+Not aliassing across scopes: line_xdyd::y#0 line::y0#0
+Not aliassing across scopes: line_xdyd::x1#0 line::x1#0
+Not aliassing across scopes: line_xdyd::xd#0 line::xd#1
+Not aliassing across scopes: line_xdyd::yd#0 line::yd#0
+Not aliassing across scopes: line_ydxd::y#1 line::y0#0
+Not aliassing across scopes: line_ydxd::x#1 line::x0#0
+Not aliassing across scopes: line_ydxd::y1#1 line::y1#0
+Not aliassing across scopes: line_ydxd::yd#1 line::yd#3
+Not aliassing across scopes: line_ydxd::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyd::x#1 line::x1#0
+Not aliassing across scopes: line_xdyd::y#1 line::y1#0
+Not aliassing across scopes: line_xdyd::x1#1 line::x0#0
+Not aliassing across scopes: line_xdyd::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyd::yd#1 line::yd#3
+Not aliassing across scopes: line_ydxi::y#1 line::y1#0
+Not aliassing across scopes: line_ydxi::x#1 line::x1#0
+Not aliassing across scopes: line_ydxi::y1#1 line::y0#0
+Not aliassing across scopes: line_ydxi::yd#1 line::yd#10
+Not aliassing across scopes: line_ydxi::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyi::x#1 line::x1#0
+Not aliassing across scopes: line_xdyi::y#1 line::y1#0
+Not aliassing across scopes: line_xdyi::x1#1 line::x0#0
+Not aliassing across scopes: line_xdyi::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyi::yd#1 line::yd#10
+Not aliassing across scopes: plot::x#0 line_xdyi::x#3
+Not aliassing across scopes: plot::y#0 line_xdyi::y#3
+Not aliassing across scopes: plot::x#1 line_xdyd::x#3
+Not aliassing across scopes: plot::y#1 line_xdyd::y#3
+Not aliassing across scopes: plot::x#2 line_ydxi::x#3
+Not aliassing across scopes: plot::y#2 line_ydxi::y#3
+Not aliassing across scopes: plot::x#3 line_ydxd::x#3
+Not aliassing across scopes: plot::y#3 line_ydxd::y#3
 Not aliassing across scopes: init_screen::b#0 BITMAP#0
 Not aliassing across scopes: init_screen::c#0 SCREEN#1
 Not aliassing identity: SCREEN#2 SCREEN#2
-Alias (byte) line_xdyi::x1#1 = (byte) line_xdyi::x1#2 
-Alias (byte) line_xdyi::x#1 = (byte) line_xdyi::x#4 
-Alias (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#4 
-Alias (byte) line_xdyi::xd#1 = (byte) line_xdyi::xd#5 
-Alias (byte[]) plot_xhi#11 = (byte[]) plot_xhi#18 
-Alias (byte[]) plot_xlo#11 = (byte[]) plot_xlo#18 
-Alias (byte[]) plot_yhi#11 = (byte[]) plot_yhi#18 
-Alias (byte[]) plot_ylo#11 = (byte[]) plot_ylo#18 
-Alias (byte[]) plot_bit#11 = (byte[]) plot_bit#18 
+Alias (byte[]) plot_xhi#11 = (byte[]) plot_xhi#9 (byte[]) plot_xhi#20 (byte[]) plot_xhi#13 (byte[]) plot_xhi#15 
+Alias (byte[]) plot_xlo#11 = (byte[]) plot_xlo#9 (byte[]) plot_xlo#20 (byte[]) plot_xlo#13 (byte[]) plot_xlo#15 
+Alias (byte[]) plot_yhi#11 = (byte[]) plot_yhi#9 (byte[]) plot_yhi#19 (byte[]) plot_yhi#13 (byte[]) plot_yhi#15 
+Alias (byte[]) plot_ylo#11 = (byte[]) plot_ylo#9 (byte[]) plot_ylo#19 (byte[]) plot_ylo#13 (byte[]) plot_ylo#15 
+Alias (byte[]) plot_bit#11 = (byte[]) plot_bit#9 (byte[]) plot_bit#20 (byte[]) plot_bit#13 (byte[]) plot_bit#15 
+Alias (byte) line_xdyi::x1#2 = (byte) line_xdyi::x1#3 
+Alias (byte) line_xdyi::x#2 = (byte) line_xdyi::x#5 
+Alias (byte) line_xdyi::yd#3 = (byte) line_xdyi::yd#5 
+Alias (byte) line_xdyi::xd#2 = (byte) line_xdyi::xd#6 
+Alias (byte[]) plot_xhi#10 = (byte[]) plot_xhi#22 
+Alias (byte[]) plot_xlo#10 = (byte[]) plot_xlo#22 
+Alias (byte[]) plot_yhi#10 = (byte[]) plot_yhi#21 
+Alias (byte[]) plot_ylo#10 = (byte[]) plot_ylo#21 
+Alias (byte[]) plot_bit#10 = (byte[]) plot_bit#22 
+Alias (byte) line_xdyd::x1#2 = (byte) line_xdyd::x1#3 
+Alias (byte) line_xdyd::x#2 = (byte) line_xdyd::x#5 
+Alias (byte) line_xdyd::yd#3 = (byte) line_xdyd::yd#5 
+Alias (byte) line_xdyd::xd#2 = (byte) line_xdyd::xd#6 
+Alias (byte[]) plot_xhi#12 = (byte[]) plot_xhi#26 
+Alias (byte[]) plot_xlo#12 = (byte[]) plot_xlo#26 
+Alias (byte[]) plot_yhi#12 = (byte[]) plot_yhi#25 
+Alias (byte[]) plot_ylo#12 = (byte[]) plot_ylo#25 
+Alias (byte[]) plot_bit#12 = (byte[]) plot_bit#26 
+Alias (byte) line_ydxi::y1#2 = (byte) line_ydxi::y1#3 
+Alias (byte) line_ydxi::y#2 = (byte) line_ydxi::y#5 
+Alias (byte) line_ydxi::xd#3 = (byte) line_ydxi::xd#5 
+Alias (byte) line_ydxi::yd#2 = (byte) line_ydxi::yd#6 
+Alias (byte[]) plot_xhi#14 = (byte[]) plot_xhi#30 
+Alias (byte[]) plot_xlo#14 = (byte[]) plot_xlo#30 
+Alias (byte[]) plot_yhi#14 = (byte[]) plot_yhi#29 
+Alias (byte[]) plot_ylo#14 = (byte[]) plot_ylo#29 
+Alias (byte[]) plot_bit#14 = (byte[]) plot_bit#30 
+Alias (byte) line_ydxd::y1#2 = (byte) line_ydxd::y1#3 
+Alias (byte) line_ydxd::y#2 = (byte) line_ydxd::y#5 
+Alias (byte) line_ydxd::xd#3 = (byte) line_ydxd::xd#5 
+Alias (byte) line_ydxd::yd#2 = (byte) line_ydxd::yd#6 
+Alias (byte[]) plot_xhi#16 = (byte[]) plot_xhi#34 
+Alias (byte[]) plot_xlo#16 = (byte[]) plot_xlo#34 
+Alias (byte[]) plot_yhi#16 = (byte[]) plot_yhi#33 
+Alias (byte[]) plot_ylo#16 = (byte[]) plot_ylo#33 
+Alias (byte[]) plot_bit#16 = (byte[]) plot_bit#34 
 Alias (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#3 
-Alias (byte[]) plot_xlo#13 = (byte[]) plot_xlo#2 
+Alias (byte[]) plot_xlo#18 = (byte[]) plot_xlo#8 
 Alias (byte*) BITMAP#1 = (byte*) BITMAP#5 
-Alias (byte[]) plot_xhi#13 = (byte[]) plot_xhi#2 
-Alias (byte[]) plot_bit#13 = (byte[]) plot_bit#2 
-Alias (byte[]) plot_ylo#13 = (byte[]) plot_ylo#25 
-Alias (byte[]) plot_yhi#13 = (byte[]) plot_yhi#25 
+Alias (byte[]) plot_xhi#18 = (byte[]) plot_xhi#8 
+Alias (byte[]) plot_bit#18 = (byte[]) plot_bit#8 
+Alias (byte[]) plot_ylo#17 = (byte[]) plot_ylo#35 
+Alias (byte[]) plot_yhi#17 = (byte[]) plot_yhi#35 
 Alias (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#3 
-Alias (byte[]) plot_ylo#12 = (byte[]) plot_ylo#2 
-Alias (byte[]) plot_yhi#12 = (byte[]) plot_yhi#2 
+Alias (byte[]) plot_ylo#18 = (byte[]) plot_ylo#7 
+Alias (byte[]) plot_yhi#18 = (byte[]) plot_yhi#7 
 Succesful SSA optimization Pass2AliasElimination
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
@@ -4863,8 +7477,8 @@ CONTROL FLOW GRAPH
   (byte[]) lines_x#0 ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y#0 ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt#0 ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((byte*) BGCOL#0) ← (byte) 0
   *((byte*) FGCOL#0) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM#0 | (byte) DEN#0
@@ -4880,11 +7494,11 @@ main::@3: scope:[main]  from main
 main::@4: scope:[main]  from main::@3
   to:main::@1
 main::@1: scope:[main]  from main::@4 main::@5
-  (byte[]) plot_bit#28 ← phi( main::@4/(byte[]) plot_bit#0 main::@5/(byte[]) plot_bit#28 )
-  (byte[]) plot_ylo#29 ← phi( main::@4/(byte[]) plot_ylo#0 main::@5/(byte[]) plot_ylo#29 )
-  (byte[]) plot_yhi#29 ← phi( main::@4/(byte[]) plot_yhi#0 main::@5/(byte[]) plot_yhi#29 )
-  (byte[]) plot_xlo#28 ← phi( main::@4/(byte[]) plot_xlo#0 main::@5/(byte[]) plot_xlo#28 )
-  (byte[]) plot_xhi#28 ← phi( main::@4/(byte[]) plot_xhi#0 main::@5/(byte[]) plot_xhi#28 )
+  (byte[]) plot_bit#45 ← phi( main::@4/(byte[]) plot_bit#0 main::@5/(byte[]) plot_bit#45 )
+  (byte[]) plot_ylo#49 ← phi( main::@4/(byte[]) plot_ylo#0 main::@5/(byte[]) plot_ylo#49 )
+  (byte[]) plot_yhi#49 ← phi( main::@4/(byte[]) plot_yhi#0 main::@5/(byte[]) plot_yhi#49 )
+  (byte[]) plot_xlo#45 ← phi( main::@4/(byte[]) plot_xlo#0 main::@5/(byte[]) plot_xlo#45 )
+  (byte[]) plot_xhi#45 ← phi( main::@4/(byte[]) plot_xhi#0 main::@5/(byte[]) plot_xhi#45 )
   (byte) lines_cnt#3 ← phi( main::@4/(byte) lines_cnt#0 main::@5/(byte) lines_cnt#3 )
   (byte[]) lines_y#2 ← phi( main::@4/(byte[]) lines_y#0 main::@5/(byte[]) lines_y#2 )
   (byte[]) lines_x#2 ← phi( main::@4/(byte[]) lines_x#0 main::@5/(byte[]) lines_x#2 )
@@ -4900,11 +7514,11 @@ lines: scope:[lines]  from main::@1
   (byte) lines::l#0 ← (byte) 0
   to:lines::@1
 lines::@1: scope:[lines]  from lines lines::@3
-  (byte[]) plot_bit#10 ← phi( lines/(byte[]) plot_bit#28 lines::@3/(byte[]) plot_bit#10 )
-  (byte[]) plot_ylo#10 ← phi( lines/(byte[]) plot_ylo#29 lines::@3/(byte[]) plot_ylo#10 )
-  (byte[]) plot_yhi#10 ← phi( lines/(byte[]) plot_yhi#29 lines::@3/(byte[]) plot_yhi#10 )
-  (byte[]) plot_xlo#10 ← phi( lines/(byte[]) plot_xlo#28 lines::@3/(byte[]) plot_xlo#10 )
-  (byte[]) plot_xhi#10 ← phi( lines/(byte[]) plot_xhi#28 lines::@3/(byte[]) plot_xhi#10 )
+  (byte[]) plot_bit#11 ← phi( lines/(byte[]) plot_bit#45 lines::@3/(byte[]) plot_bit#11 )
+  (byte[]) plot_ylo#11 ← phi( lines/(byte[]) plot_ylo#49 lines::@3/(byte[]) plot_ylo#11 )
+  (byte[]) plot_yhi#11 ← phi( lines/(byte[]) plot_yhi#49 lines::@3/(byte[]) plot_yhi#11 )
+  (byte[]) plot_xlo#11 ← phi( lines/(byte[]) plot_xlo#45 lines::@3/(byte[]) plot_xlo#11 )
+  (byte[]) plot_xhi#11 ← phi( lines/(byte[]) plot_xhi#45 lines::@3/(byte[]) plot_xhi#11 )
   (byte) lines_cnt#1 ← phi( lines/(byte) lines_cnt#3 lines::@3/(byte) lines_cnt#1 )
   (byte[]) lines_y#1 ← phi( lines/(byte[]) lines_y#2 lines::@3/(byte[]) lines_y#1 )
   (byte) lines::l#2 ← phi( lines/(byte) lines::l#0 lines::@3/(byte) lines::l#1 )
@@ -4932,133 +7546,301 @@ lines::@return: scope:[lines]  from lines::@3
 line: scope:[line]  from lines::@1
   (boolean~) line::$1 ← (byte) line::x0#0 >= (byte) line::x1#0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  (boolean~) line::$15 ← (byte) line::y0#0 >= (byte) line::y1#0
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  (boolean~) line::$17 ← (byte) line::y0#0 >= (byte) line::y1#0
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   (boolean~) line::$4 ← (byte) line::y0#0 >= (byte) line::y1#0
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  (boolean~) line::$7 ← (byte) line::yd#0 >= (byte) line::xd#1
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  (boolean~) line::$12 ← (byte) line::yd#0 >= (byte) line::xd#1
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  (boolean~) line::$7 ← (byte) line::yd#1 >= (byte) line::xd#1
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  (boolean~) line::$25 ← (byte) line::yd#10 >= (byte) line::xd#0
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  (boolean~) line::$20 ← (byte) line::yd#3 >= (byte) line::xd#0
+  if((boolean~) line::$20) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
-  (byte) line_xdyi::x1#1 ← phi( line_xdyi/(byte) line_xdyi::x1#0 line_xdyi::@2/(byte) line_xdyi::x1#1 )
-  (byte[]) plot_bit#11 ← phi( line_xdyi/(byte[]) plot_bit#10 line_xdyi::@2/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#11 ← phi( line_xdyi/(byte[]) plot_ylo#10 line_xdyi::@2/(byte[]) plot_ylo#11 )
-  (byte[]) plot_yhi#11 ← phi( line_xdyi/(byte[]) plot_yhi#10 line_xdyi::@2/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#11 ← phi( line_xdyi/(byte[]) plot_xlo#10 line_xdyi::@2/(byte[]) plot_xlo#11 )
-  (byte[]) plot_xhi#11 ← phi( line_xdyi/(byte[]) plot_xhi#10 line_xdyi::@2/(byte[]) plot_xhi#11 )
-  (byte) line_xdyi::xd#1 ← phi( line_xdyi/(byte) line_xdyi::xd#0 line_xdyi::@2/(byte) line_xdyi::xd#1 )
-  (byte) line_xdyi::yd#2 ← phi( line_xdyi/(byte) line_xdyi::yd#0 line_xdyi::@2/(byte) line_xdyi::yd#2 )
+  (byte) line_xdyi::x1#2 ← phi( line_xdyi/(byte) line_xdyi::x1#6 line_xdyi::@2/(byte) line_xdyi::x1#2 )
+  (byte[]) plot_bit#10 ← phi( line_xdyi/(byte[]) plot_bit#11 line_xdyi::@2/(byte[]) plot_bit#10 )
+  (byte[]) plot_ylo#10 ← phi( line_xdyi/(byte[]) plot_ylo#11 line_xdyi::@2/(byte[]) plot_ylo#10 )
+  (byte[]) plot_yhi#10 ← phi( line_xdyi/(byte[]) plot_yhi#11 line_xdyi::@2/(byte[]) plot_yhi#10 )
+  (byte[]) plot_xlo#10 ← phi( line_xdyi/(byte[]) plot_xlo#11 line_xdyi::@2/(byte[]) plot_xlo#10 )
+  (byte[]) plot_xhi#10 ← phi( line_xdyi/(byte[]) plot_xhi#11 line_xdyi::@2/(byte[]) plot_xhi#10 )
+  (byte) line_xdyi::xd#2 ← phi( line_xdyi/(byte) line_xdyi::xd#5 line_xdyi::@2/(byte) line_xdyi::xd#2 )
+  (byte) line_xdyi::yd#3 ← phi( line_xdyi/(byte) line_xdyi::yd#2 line_xdyi::@2/(byte) line_xdyi::yd#3 )
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
-  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#1 >= (byte) line_xdyi::e#1
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#3
+  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#2 >= (byte) line_xdyi::e#1
   if((boolean~) line_xdyi::$5) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#1 + (byte) 1
-  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#1 < (byte~) line_xdyi::$8
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#2 + (byte) 1
+  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#2 < (byte~) line_xdyi::$8
   if((boolean~) line_xdyi::$9) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#1
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#2
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte[]) plot_bit#1 ← phi( line::@15/(byte[]) plot_bit#10 line::@17/(byte[]) plot_bit#10 line::@19/(byte[]) plot_bit#10 line::@2/(byte[]) plot_bit#10 line::@22/(byte[]) plot_bit#10 line::@24/(byte[]) plot_bit#10 line::@3/(byte[]) plot_bit#10 line::@7/(byte[]) plot_bit#10 line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#1 ← phi( line::@15/(byte[]) plot_ylo#10 line::@17/(byte[]) plot_ylo#10 line::@19/(byte[]) plot_ylo#10 line::@2/(byte[]) plot_ylo#10 line::@22/(byte[]) plot_ylo#10 line::@24/(byte[]) plot_ylo#10 line::@3/(byte[]) plot_ylo#10 line::@7/(byte[]) plot_ylo#10 line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte[]) plot_yhi#1 ← phi( line::@15/(byte[]) plot_yhi#10 line::@17/(byte[]) plot_yhi#10 line::@19/(byte[]) plot_yhi#10 line::@2/(byte[]) plot_yhi#10 line::@22/(byte[]) plot_yhi#10 line::@24/(byte[]) plot_yhi#10 line::@3/(byte[]) plot_yhi#10 line::@7/(byte[]) plot_yhi#10 line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#1 ← phi( line::@15/(byte[]) plot_xlo#10 line::@17/(byte[]) plot_xlo#10 line::@19/(byte[]) plot_xlo#10 line::@2/(byte[]) plot_xlo#10 line::@22/(byte[]) plot_xlo#10 line::@24/(byte[]) plot_xlo#10 line::@3/(byte[]) plot_xlo#10 line::@7/(byte[]) plot_xlo#10 line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte[]) plot_xhi#1 ← phi( line::@15/(byte[]) plot_xhi#10 line::@17/(byte[]) plot_xhi#10 line::@19/(byte[]) plot_xhi#10 line::@2/(byte[]) plot_xhi#10 line::@22/(byte[]) plot_xhi#10 line::@24/(byte[]) plot_xhi#10 line::@3/(byte[]) plot_xhi#10 line::@7/(byte[]) plot_xhi#10 line_xdyi::@1/(byte[]) plot_xhi#11 )
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::x1#2 ← phi( line_xdyd/(byte) line_xdyd::x1#6 line_xdyd::@2/(byte) line_xdyd::x1#2 )
+  (byte[]) plot_bit#12 ← phi( line_xdyd/(byte[]) plot_bit#11 line_xdyd::@2/(byte[]) plot_bit#12 )
+  (byte[]) plot_ylo#12 ← phi( line_xdyd/(byte[]) plot_ylo#11 line_xdyd::@2/(byte[]) plot_ylo#12 )
+  (byte[]) plot_yhi#12 ← phi( line_xdyd/(byte[]) plot_yhi#11 line_xdyd::@2/(byte[]) plot_yhi#12 )
+  (byte[]) plot_xlo#12 ← phi( line_xdyd/(byte[]) plot_xlo#11 line_xdyd::@2/(byte[]) plot_xlo#12 )
+  (byte[]) plot_xhi#12 ← phi( line_xdyd/(byte[]) plot_xhi#11 line_xdyd::@2/(byte[]) plot_xhi#12 )
+  (byte) line_xdyd::xd#2 ← phi( line_xdyd/(byte) line_xdyd::xd#5 line_xdyd::@2/(byte) line_xdyd::xd#2 )
+  (byte) line_xdyd::yd#3 ← phi( line_xdyd/(byte) line_xdyd::yd#2 line_xdyd::@2/(byte) line_xdyd::yd#3 )
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#3
+  (boolean~) line_xdyd::$5 ← (byte) line_xdyd::xd#2 >= (byte) line_xdyd::e#1
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#2 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x#2 < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#2
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::y1#2 ← phi( line_ydxi/(byte) line_ydxi::y1#6 line_ydxi::@2/(byte) line_ydxi::y1#2 )
+  (byte[]) plot_bit#14 ← phi( line_ydxi/(byte[]) plot_bit#11 line_ydxi::@2/(byte[]) plot_bit#14 )
+  (byte[]) plot_ylo#14 ← phi( line_ydxi/(byte[]) plot_ylo#11 line_ydxi::@2/(byte[]) plot_ylo#14 )
+  (byte[]) plot_yhi#14 ← phi( line_ydxi/(byte[]) plot_yhi#11 line_ydxi::@2/(byte[]) plot_yhi#14 )
+  (byte[]) plot_xlo#14 ← phi( line_ydxi/(byte[]) plot_xlo#11 line_ydxi::@2/(byte[]) plot_xlo#14 )
+  (byte[]) plot_xhi#14 ← phi( line_ydxi/(byte[]) plot_xhi#11 line_ydxi::@2/(byte[]) plot_xhi#14 )
+  (byte) line_ydxi::yd#2 ← phi( line_ydxi/(byte) line_ydxi::yd#5 line_ydxi::@2/(byte) line_ydxi::yd#2 )
+  (byte) line_ydxi::xd#3 ← phi( line_ydxi/(byte) line_ydxi::xd#2 line_ydxi::@2/(byte) line_ydxi::xd#3 )
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#3
+  (boolean~) line_ydxi::$5 ← (byte) line_ydxi::yd#2 >= (byte) line_ydxi::e#1
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#2 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y#2 < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#2
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::y1#2 ← phi( line_ydxd/(byte) line_ydxd::y1#6 line_ydxd::@2/(byte) line_ydxd::y1#2 )
+  (byte[]) plot_bit#16 ← phi( line_ydxd/(byte[]) plot_bit#11 line_ydxd::@2/(byte[]) plot_bit#16 )
+  (byte[]) plot_ylo#16 ← phi( line_ydxd/(byte[]) plot_ylo#11 line_ydxd::@2/(byte[]) plot_ylo#16 )
+  (byte[]) plot_yhi#16 ← phi( line_ydxd/(byte[]) plot_yhi#11 line_ydxd::@2/(byte[]) plot_yhi#16 )
+  (byte[]) plot_xlo#16 ← phi( line_ydxd/(byte[]) plot_xlo#11 line_ydxd::@2/(byte[]) plot_xlo#16 )
+  (byte[]) plot_xhi#16 ← phi( line_ydxd/(byte[]) plot_xhi#11 line_ydxd::@2/(byte[]) plot_xhi#16 )
+  (byte) line_ydxd::yd#2 ← phi( line_ydxd/(byte) line_ydxd::yd#5 line_ydxd::@2/(byte) line_ydxd::yd#2 )
+  (byte) line_ydxd::xd#3 ← phi( line_ydxd/(byte) line_ydxd::xd#2 line_ydxd::@2/(byte) line_ydxd::xd#3 )
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#3
+  (boolean~) line_ydxd::$5 ← (byte) line_ydxd::yd#2 >= (byte) line_ydxd::e#1
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#2 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y#2 < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#2
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte[]) plot_bit#1 ← phi( line_xdyd::@1/(byte[]) plot_bit#12 line_xdyi::@1/(byte[]) plot_bit#10 line_ydxd::@1/(byte[]) plot_bit#16 line_ydxi::@1/(byte[]) plot_bit#14 )
+  (byte[]) plot_ylo#1 ← phi( line_xdyd::@1/(byte[]) plot_ylo#12 line_xdyi::@1/(byte[]) plot_ylo#10 line_ydxd::@1/(byte[]) plot_ylo#16 line_ydxi::@1/(byte[]) plot_ylo#14 )
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte[]) plot_yhi#1 ← phi( line_xdyd::@1/(byte[]) plot_yhi#12 line_xdyi::@1/(byte[]) plot_yhi#10 line_ydxd::@1/(byte[]) plot_yhi#16 line_ydxi::@1/(byte[]) plot_yhi#14 )
+  (byte[]) plot_xlo#1 ← phi( line_xdyd::@1/(byte[]) plot_xlo#12 line_xdyi::@1/(byte[]) plot_xlo#10 line_ydxd::@1/(byte[]) plot_xlo#16 line_ydxi::@1/(byte[]) plot_xlo#14 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte[]) plot_xhi#1 ← phi( line_xdyd::@1/(byte[]) plot_xhi#12 line_xdyi::@1/(byte[]) plot_xhi#10 line_ydxd::@1/(byte[]) plot_xhi#16 line_ydxi::@1/(byte[]) plot_xhi#14 )
   (byte*) plot::plotter_x#0 ← (byte) 0
   (byte*) plot::plotter_y#0 ← (byte) 0
-  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#9
+  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -5070,19 +7852,19 @@ init_plot_tables: scope:[init_plot_tables]  from main::@3
   (byte) init_plot_tables::x#0 ← (byte) 0
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@2
-  (byte[]) plot_yhi#13 ← phi( init_plot_tables/(byte[]) plot_yhi#0 init_plot_tables::@2/(byte[]) plot_yhi#13 )
-  (byte[]) plot_ylo#13 ← phi( init_plot_tables/(byte[]) plot_ylo#0 init_plot_tables::@2/(byte[]) plot_ylo#13 )
-  (byte[]) plot_bit#13 ← phi( init_plot_tables/(byte[]) plot_bit#0 init_plot_tables::@2/(byte[]) plot_bit#13 )
+  (byte[]) plot_yhi#17 ← phi( init_plot_tables/(byte[]) plot_yhi#0 init_plot_tables::@2/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#17 ← phi( init_plot_tables/(byte[]) plot_ylo#0 init_plot_tables::@2/(byte[]) plot_ylo#17 )
+  (byte[]) plot_bit#18 ← phi( init_plot_tables/(byte[]) plot_bit#0 init_plot_tables::@2/(byte[]) plot_bit#18 )
   (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) init_plot_tables::bit#0 init_plot_tables::@2/(byte) init_plot_tables::bit#4 )
-  (byte[]) plot_xhi#13 ← phi( init_plot_tables/(byte[]) plot_xhi#0 init_plot_tables::@2/(byte[]) plot_xhi#13 )
+  (byte[]) plot_xhi#18 ← phi( init_plot_tables/(byte[]) plot_xhi#0 init_plot_tables::@2/(byte[]) plot_xhi#18 )
   (byte*) BITMAP#1 ← phi( init_plot_tables/(byte*) BITMAP#0 init_plot_tables::@2/(byte*) BITMAP#1 )
-  (byte[]) plot_xlo#13 ← phi( init_plot_tables/(byte[]) plot_xlo#0 init_plot_tables::@2/(byte[]) plot_xlo#13 )
+  (byte[]) plot_xlo#18 ← phi( init_plot_tables/(byte[]) plot_xlo#0 init_plot_tables::@2/(byte[]) plot_xlo#18 )
   (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) init_plot_tables::x#0 init_plot_tables::@2/(byte) init_plot_tables::x#1 )
   (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248
-  *((byte[]) plot_xlo#13 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0
+  *((byte[]) plot_xlo#18 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0
   (byte~) init_plot_tables::$1 ← > (byte*) BITMAP#1
-  *((byte[]) plot_xhi#13 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$1
-  *((byte[]) plot_bit#13 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3
+  *((byte[]) plot_xhi#18 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$1
+  *((byte[]) plot_bit#18 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3
   (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1
   (boolean~) init_plot_tables::$4 ← (byte) init_plot_tables::bit#1 != (byte) 0
   if((boolean~) init_plot_tables::$4) goto init_plot_tables::@2
@@ -5101,16 +7883,16 @@ init_plot_tables::@6: scope:[init_plot_tables]  from init_plot_tables::@2
   (byte) init_plot_tables::y#0 ← (byte) 0
   to:init_plot_tables::@3
 init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_plot_tables::@6
-  (byte[]) plot_yhi#12 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#12 init_plot_tables::@6/(byte[]) plot_yhi#13 )
-  (byte[]) plot_ylo#12 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#12 init_plot_tables::@6/(byte[]) plot_ylo#13 )
+  (byte[]) plot_yhi#18 ← phi( init_plot_tables::@4/(byte[]) plot_yhi#18 init_plot_tables::@6/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#18 ← phi( init_plot_tables::@4/(byte[]) plot_ylo#18 init_plot_tables::@6/(byte[]) plot_ylo#17 )
   (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@6/(byte*) init_plot_tables::yoffs#0 )
   (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@6/(byte) init_plot_tables::y#0 )
   (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7
   (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2
   (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7
-  *((byte[]) plot_ylo#12 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8
+  *((byte[]) plot_ylo#18 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8
   (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2
-  *((byte[]) plot_yhi#12 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9
+  *((byte[]) plot_yhi#18 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9
   (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7
   (boolean~) init_plot_tables::$12 ← (byte~) init_plot_tables::$10 != (byte) 7
   if((boolean~) init_plot_tables::$12) goto init_plot_tables::@4
@@ -5155,75 +7937,124 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Not aliassing across scopes: line::x0#0 lines::$0
 Not aliassing across scopes: line::x1#0 lines::$2
 Not aliassing across scopes: line::y0#0 lines::$3
 Not aliassing across scopes: line::y1#0 lines::$5
-Not aliassing across scopes: plot::x#0 line::x0#0
-Not aliassing across scopes: plot::y#0 line::y0#0
-Not aliassing across scopes: plot::x#1 line::x1#0
-Not aliassing across scopes: plot::y#1 line::y1#0
-Not aliassing across scopes: plot::x#2 line::x0#0
-Not aliassing across scopes: plot::y#2 line::y0#0
-Not aliassing across scopes: plot::x#3 line::x1#0
-Not aliassing across scopes: plot::y#3 line::y1#0
+Not aliassing across scopes: line_ydxi::y#0 line::y0#0
+Not aliassing across scopes: line_ydxi::x#0 line::x0#0
+Not aliassing across scopes: line_ydxi::y1#0 line::y1#0
+Not aliassing across scopes: line_ydxi::yd#0 line::yd#1
+Not aliassing across scopes: line_ydxi::xd#0 line::xd#1
 Not aliassing across scopes: line_xdyi::x#0 line::x0#0
 Not aliassing across scopes: line_xdyi::y#0 line::y0#0
 Not aliassing across scopes: line_xdyi::x1#0 line::x1#0
 Not aliassing across scopes: line_xdyi::xd#0 line::xd#1
-Not aliassing across scopes: line_xdyi::yd#0 line::yd#0
-Not aliassing across scopes: plot::x#4 line::x0#0
-Not aliassing across scopes: plot::y#4 line::y0#0
-Not aliassing across scopes: plot::x#5 line::x1#0
-Not aliassing across scopes: plot::y#5 line::y1#0
-Not aliassing across scopes: plot::x#6 line::x0#0
-Not aliassing across scopes: plot::y#6 line::y0#0
-Not aliassing across scopes: plot::x#7 line::x1#0
-Not aliassing across scopes: plot::y#7 line::y1#0
-Not aliassing across scopes: plot::x#8 line_xdyi::x#2
-Not aliassing across scopes: plot::y#8 line_xdyi::y#2
-Not aliassing identity: plot_ylo#12 plot_ylo#12
-Not aliassing identity: plot_yhi#12 plot_yhi#12
+Not aliassing across scopes: line_xdyi::yd#0 line::yd#1
+Not aliassing across scopes: line_ydxd::y#0 line::y1#0
+Not aliassing across scopes: line_ydxd::x#0 line::x1#0
+Not aliassing across scopes: line_ydxd::y1#0 line::y0#0
+Not aliassing across scopes: line_ydxd::yd#0 line::yd#0
+Not aliassing across scopes: line_ydxd::xd#0 line::xd#1
+Not aliassing across scopes: line_xdyd::x#0 line::x0#0
+Not aliassing across scopes: line_xdyd::y#0 line::y0#0
+Not aliassing across scopes: line_xdyd::x1#0 line::x1#0
+Not aliassing across scopes: line_xdyd::xd#0 line::xd#1
+Not aliassing across scopes: line_xdyd::yd#0 line::yd#0
+Not aliassing across scopes: line_ydxd::y#1 line::y0#0
+Not aliassing across scopes: line_ydxd::x#1 line::x0#0
+Not aliassing across scopes: line_ydxd::y1#1 line::y1#0
+Not aliassing across scopes: line_ydxd::yd#1 line::yd#3
+Not aliassing across scopes: line_ydxd::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyd::x#1 line::x1#0
+Not aliassing across scopes: line_xdyd::y#1 line::y1#0
+Not aliassing across scopes: line_xdyd::x1#1 line::x0#0
+Not aliassing across scopes: line_xdyd::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyd::yd#1 line::yd#3
+Not aliassing across scopes: line_ydxi::y#1 line::y1#0
+Not aliassing across scopes: line_ydxi::x#1 line::x1#0
+Not aliassing across scopes: line_ydxi::y1#1 line::y0#0
+Not aliassing across scopes: line_ydxi::yd#1 line::yd#10
+Not aliassing across scopes: line_ydxi::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyi::x#1 line::x1#0
+Not aliassing across scopes: line_xdyi::y#1 line::y1#0
+Not aliassing across scopes: line_xdyi::x1#1 line::x0#0
+Not aliassing across scopes: line_xdyi::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyi::yd#1 line::yd#10
+Not aliassing across scopes: plot::x#0 line_xdyi::x#3
+Not aliassing across scopes: plot::y#0 line_xdyi::y#3
+Not aliassing across scopes: plot::x#1 line_xdyd::x#3
+Not aliassing across scopes: plot::y#1 line_xdyd::y#3
+Not aliassing across scopes: plot::x#2 line_ydxi::x#3
+Not aliassing across scopes: plot::y#2 line_ydxi::y#3
+Not aliassing across scopes: plot::x#3 line_ydxd::x#3
+Not aliassing across scopes: plot::y#3 line_ydxd::y#3
+Not aliassing identity: plot_ylo#18 plot_ylo#18
+Not aliassing identity: plot_yhi#18 plot_yhi#18
 Not aliassing across scopes: init_screen::b#0 BITMAP#0
 Not aliassing across scopes: init_screen::c#0 SCREEN#1
 Not aliassing identity: SCREEN#2 SCREEN#2
 Self Phi Eliminated (byte[]) lines_x#2
 Self Phi Eliminated (byte[]) lines_y#2
 Self Phi Eliminated (byte) lines_cnt#3
-Self Phi Eliminated (byte[]) plot_xhi#28
-Self Phi Eliminated (byte[]) plot_xlo#28
-Self Phi Eliminated (byte[]) plot_yhi#29
-Self Phi Eliminated (byte[]) plot_ylo#29
-Self Phi Eliminated (byte[]) plot_bit#28
+Self Phi Eliminated (byte[]) plot_xhi#45
+Self Phi Eliminated (byte[]) plot_xlo#45
+Self Phi Eliminated (byte[]) plot_yhi#49
+Self Phi Eliminated (byte[]) plot_ylo#49
+Self Phi Eliminated (byte[]) plot_bit#45
 Self Phi Eliminated (byte[]) lines_x#1
 Self Phi Eliminated (byte[]) lines_y#1
 Self Phi Eliminated (byte) lines_cnt#1
-Self Phi Eliminated (byte[]) plot_xhi#10
-Self Phi Eliminated (byte[]) plot_xlo#10
-Self Phi Eliminated (byte[]) plot_yhi#10
-Self Phi Eliminated (byte[]) plot_ylo#10
-Self Phi Eliminated (byte[]) plot_bit#10
-Self Phi Eliminated (byte) line_xdyi::yd#2
-Self Phi Eliminated (byte) line_xdyi::xd#1
 Self Phi Eliminated (byte[]) plot_xhi#11
 Self Phi Eliminated (byte[]) plot_xlo#11
 Self Phi Eliminated (byte[]) plot_yhi#11
 Self Phi Eliminated (byte[]) plot_ylo#11
 Self Phi Eliminated (byte[]) plot_bit#11
-Self Phi Eliminated (byte) line_xdyi::x1#1
-Self Phi Eliminated (byte[]) plot_xlo#13
-Self Phi Eliminated (byte*) BITMAP#1
-Self Phi Eliminated (byte[]) plot_xhi#13
-Self Phi Eliminated (byte[]) plot_bit#13
-Self Phi Eliminated (byte[]) plot_ylo#13
-Self Phi Eliminated (byte[]) plot_yhi#13
-Self Phi Eliminated (byte[]) plot_ylo#12
+Self Phi Eliminated (byte) line_xdyi::yd#3
+Self Phi Eliminated (byte) line_xdyi::xd#2
+Self Phi Eliminated (byte[]) plot_xhi#10
+Self Phi Eliminated (byte[]) plot_xlo#10
+Self Phi Eliminated (byte[]) plot_yhi#10
+Self Phi Eliminated (byte[]) plot_ylo#10
+Self Phi Eliminated (byte[]) plot_bit#10
+Self Phi Eliminated (byte) line_xdyi::x1#2
+Self Phi Eliminated (byte) line_xdyd::yd#3
+Self Phi Eliminated (byte) line_xdyd::xd#2
+Self Phi Eliminated (byte[]) plot_xhi#12
+Self Phi Eliminated (byte[]) plot_xlo#12
 Self Phi Eliminated (byte[]) plot_yhi#12
+Self Phi Eliminated (byte[]) plot_ylo#12
+Self Phi Eliminated (byte[]) plot_bit#12
+Self Phi Eliminated (byte) line_xdyd::x1#2
+Self Phi Eliminated (byte) line_ydxi::xd#3
+Self Phi Eliminated (byte) line_ydxi::yd#2
+Self Phi Eliminated (byte[]) plot_xhi#14
+Self Phi Eliminated (byte[]) plot_xlo#14
+Self Phi Eliminated (byte[]) plot_yhi#14
+Self Phi Eliminated (byte[]) plot_ylo#14
+Self Phi Eliminated (byte[]) plot_bit#14
+Self Phi Eliminated (byte) line_ydxi::y1#2
+Self Phi Eliminated (byte) line_ydxd::xd#3
+Self Phi Eliminated (byte) line_ydxd::yd#2
+Self Phi Eliminated (byte[]) plot_xhi#16
+Self Phi Eliminated (byte[]) plot_xlo#16
+Self Phi Eliminated (byte[]) plot_yhi#16
+Self Phi Eliminated (byte[]) plot_ylo#16
+Self Phi Eliminated (byte[]) plot_bit#16
+Self Phi Eliminated (byte) line_ydxd::y1#2
+Self Phi Eliminated (byte[]) plot_xlo#18
+Self Phi Eliminated (byte*) BITMAP#1
+Self Phi Eliminated (byte[]) plot_xhi#18
+Self Phi Eliminated (byte[]) plot_bit#18
+Self Phi Eliminated (byte[]) plot_ylo#17
+Self Phi Eliminated (byte[]) plot_yhi#17
+Self Phi Eliminated (byte[]) plot_ylo#18
+Self Phi Eliminated (byte[]) plot_yhi#18
 Self Phi Eliminated (byte*) BITMAP#3
 Self Phi Eliminated (byte*) SCREEN#1
 Self Phi Eliminated (byte*) SCREEN#2
@@ -5254,8 +8085,8 @@ CONTROL FLOW GRAPH
   (byte[]) lines_x#0 ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y#0 ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt#0 ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((byte*) BGCOL#0) ← (byte) 0
   *((byte*) FGCOL#0) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM#0 | (byte) DEN#0
@@ -5271,11 +8102,11 @@ main::@3: scope:[main]  from main
 main::@4: scope:[main]  from main::@3
   to:main::@1
 main::@1: scope:[main]  from main::@4 main::@5
-  (byte[]) plot_bit#28 ← phi( main::@4/(byte[]) plot_bit#0 )
-  (byte[]) plot_ylo#29 ← phi( main::@4/(byte[]) plot_ylo#0 )
-  (byte[]) plot_yhi#29 ← phi( main::@4/(byte[]) plot_yhi#0 )
-  (byte[]) plot_xlo#28 ← phi( main::@4/(byte[]) plot_xlo#0 )
-  (byte[]) plot_xhi#28 ← phi( main::@4/(byte[]) plot_xhi#0 )
+  (byte[]) plot_bit#45 ← phi( main::@4/(byte[]) plot_bit#0 )
+  (byte[]) plot_ylo#49 ← phi( main::@4/(byte[]) plot_ylo#0 )
+  (byte[]) plot_yhi#49 ← phi( main::@4/(byte[]) plot_yhi#0 )
+  (byte[]) plot_xlo#45 ← phi( main::@4/(byte[]) plot_xlo#0 )
+  (byte[]) plot_xhi#45 ← phi( main::@4/(byte[]) plot_xhi#0 )
   (byte) lines_cnt#3 ← phi( main::@4/(byte) lines_cnt#0 )
   (byte[]) lines_y#2 ← phi( main::@4/(byte[]) lines_y#0 )
   (byte[]) lines_x#2 ← phi( main::@4/(byte[]) lines_x#0 )
@@ -5291,11 +8122,11 @@ lines: scope:[lines]  from main::@1
   (byte) lines::l#0 ← (byte) 0
   to:lines::@1
 lines::@1: scope:[lines]  from lines lines::@3
-  (byte[]) plot_bit#10 ← phi( lines/(byte[]) plot_bit#28 )
-  (byte[]) plot_ylo#10 ← phi( lines/(byte[]) plot_ylo#29 )
-  (byte[]) plot_yhi#10 ← phi( lines/(byte[]) plot_yhi#29 )
-  (byte[]) plot_xlo#10 ← phi( lines/(byte[]) plot_xlo#28 )
-  (byte[]) plot_xhi#10 ← phi( lines/(byte[]) plot_xhi#28 )
+  (byte[]) plot_bit#11 ← phi( lines/(byte[]) plot_bit#45 )
+  (byte[]) plot_ylo#11 ← phi( lines/(byte[]) plot_ylo#49 )
+  (byte[]) plot_yhi#11 ← phi( lines/(byte[]) plot_yhi#49 )
+  (byte[]) plot_xlo#11 ← phi( lines/(byte[]) plot_xlo#45 )
+  (byte[]) plot_xhi#11 ← phi( lines/(byte[]) plot_xhi#45 )
   (byte) lines_cnt#1 ← phi( lines/(byte) lines_cnt#3 )
   (byte[]) lines_y#1 ← phi( lines/(byte[]) lines_y#2 )
   (byte) lines::l#2 ← phi( lines/(byte) lines::l#0 lines::@3/(byte) lines::l#1 )
@@ -5323,133 +8154,301 @@ lines::@return: scope:[lines]  from lines::@3
 line: scope:[line]  from lines::@1
   (boolean~) line::$1 ← (byte) line::x0#0 >= (byte) line::x1#0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  (boolean~) line::$15 ← (byte) line::y0#0 >= (byte) line::y1#0
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  (boolean~) line::$17 ← (byte) line::y0#0 >= (byte) line::y1#0
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   (boolean~) line::$4 ← (byte) line::y0#0 >= (byte) line::y1#0
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  (boolean~) line::$7 ← (byte) line::yd#0 >= (byte) line::xd#1
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  (boolean~) line::$12 ← (byte) line::yd#0 >= (byte) line::xd#1
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  (boolean~) line::$7 ← (byte) line::yd#1 >= (byte) line::xd#1
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  (boolean~) line::$25 ← (byte) line::yd#10 >= (byte) line::xd#0
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  (boolean~) line::$20 ← (byte) line::yd#3 >= (byte) line::xd#0
+  if((boolean~) line::$20) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
-  (byte) line_xdyi::x1#1 ← phi( line_xdyi/(byte) line_xdyi::x1#0 )
-  (byte[]) plot_bit#11 ← phi( line_xdyi/(byte[]) plot_bit#10 )
-  (byte[]) plot_ylo#11 ← phi( line_xdyi/(byte[]) plot_ylo#10 )
-  (byte[]) plot_yhi#11 ← phi( line_xdyi/(byte[]) plot_yhi#10 )
-  (byte[]) plot_xlo#11 ← phi( line_xdyi/(byte[]) plot_xlo#10 )
-  (byte[]) plot_xhi#11 ← phi( line_xdyi/(byte[]) plot_xhi#10 )
-  (byte) line_xdyi::xd#1 ← phi( line_xdyi/(byte) line_xdyi::xd#0 )
-  (byte) line_xdyi::yd#2 ← phi( line_xdyi/(byte) line_xdyi::yd#0 )
+  (byte) line_xdyi::x1#2 ← phi( line_xdyi/(byte) line_xdyi::x1#6 )
+  (byte[]) plot_bit#10 ← phi( line_xdyi/(byte[]) plot_bit#11 )
+  (byte[]) plot_ylo#10 ← phi( line_xdyi/(byte[]) plot_ylo#11 )
+  (byte[]) plot_yhi#10 ← phi( line_xdyi/(byte[]) plot_yhi#11 )
+  (byte[]) plot_xlo#10 ← phi( line_xdyi/(byte[]) plot_xlo#11 )
+  (byte[]) plot_xhi#10 ← phi( line_xdyi/(byte[]) plot_xhi#11 )
+  (byte) line_xdyi::xd#2 ← phi( line_xdyi/(byte) line_xdyi::xd#5 )
+  (byte) line_xdyi::yd#3 ← phi( line_xdyi/(byte) line_xdyi::yd#2 )
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
-  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#1 >= (byte) line_xdyi::e#1
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#3
+  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#2 >= (byte) line_xdyi::e#1
   if((boolean~) line_xdyi::$5) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#1 + (byte) 1
-  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#1 < (byte~) line_xdyi::$8
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#2 + (byte) 1
+  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#2 < (byte~) line_xdyi::$8
   if((boolean~) line_xdyi::$9) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#1
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#2
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte[]) plot_bit#1 ← phi( line::@15/(byte[]) plot_bit#10 line::@17/(byte[]) plot_bit#10 line::@19/(byte[]) plot_bit#10 line::@2/(byte[]) plot_bit#10 line::@22/(byte[]) plot_bit#10 line::@24/(byte[]) plot_bit#10 line::@3/(byte[]) plot_bit#10 line::@7/(byte[]) plot_bit#10 line_xdyi::@1/(byte[]) plot_bit#11 )
-  (byte[]) plot_ylo#1 ← phi( line::@15/(byte[]) plot_ylo#10 line::@17/(byte[]) plot_ylo#10 line::@19/(byte[]) plot_ylo#10 line::@2/(byte[]) plot_ylo#10 line::@22/(byte[]) plot_ylo#10 line::@24/(byte[]) plot_ylo#10 line::@3/(byte[]) plot_ylo#10 line::@7/(byte[]) plot_ylo#10 line_xdyi::@1/(byte[]) plot_ylo#11 )
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte[]) plot_yhi#1 ← phi( line::@15/(byte[]) plot_yhi#10 line::@17/(byte[]) plot_yhi#10 line::@19/(byte[]) plot_yhi#10 line::@2/(byte[]) plot_yhi#10 line::@22/(byte[]) plot_yhi#10 line::@24/(byte[]) plot_yhi#10 line::@3/(byte[]) plot_yhi#10 line::@7/(byte[]) plot_yhi#10 line_xdyi::@1/(byte[]) plot_yhi#11 )
-  (byte[]) plot_xlo#1 ← phi( line::@15/(byte[]) plot_xlo#10 line::@17/(byte[]) plot_xlo#10 line::@19/(byte[]) plot_xlo#10 line::@2/(byte[]) plot_xlo#10 line::@22/(byte[]) plot_xlo#10 line::@24/(byte[]) plot_xlo#10 line::@3/(byte[]) plot_xlo#10 line::@7/(byte[]) plot_xlo#10 line_xdyi::@1/(byte[]) plot_xlo#11 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte[]) plot_xhi#1 ← phi( line::@15/(byte[]) plot_xhi#10 line::@17/(byte[]) plot_xhi#10 line::@19/(byte[]) plot_xhi#10 line::@2/(byte[]) plot_xhi#10 line::@22/(byte[]) plot_xhi#10 line::@24/(byte[]) plot_xhi#10 line::@3/(byte[]) plot_xhi#10 line::@7/(byte[]) plot_xhi#10 line_xdyi::@1/(byte[]) plot_xhi#11 )
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::x1#2 ← phi( line_xdyd/(byte) line_xdyd::x1#6 )
+  (byte[]) plot_bit#12 ← phi( line_xdyd/(byte[]) plot_bit#11 )
+  (byte[]) plot_ylo#12 ← phi( line_xdyd/(byte[]) plot_ylo#11 )
+  (byte[]) plot_yhi#12 ← phi( line_xdyd/(byte[]) plot_yhi#11 )
+  (byte[]) plot_xlo#12 ← phi( line_xdyd/(byte[]) plot_xlo#11 )
+  (byte[]) plot_xhi#12 ← phi( line_xdyd/(byte[]) plot_xhi#11 )
+  (byte) line_xdyd::xd#2 ← phi( line_xdyd/(byte) line_xdyd::xd#5 )
+  (byte) line_xdyd::yd#3 ← phi( line_xdyd/(byte) line_xdyd::yd#2 )
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#3
+  (boolean~) line_xdyd::$5 ← (byte) line_xdyd::xd#2 >= (byte) line_xdyd::e#1
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#2 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x#2 < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#2
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::y1#2 ← phi( line_ydxi/(byte) line_ydxi::y1#6 )
+  (byte[]) plot_bit#14 ← phi( line_ydxi/(byte[]) plot_bit#11 )
+  (byte[]) plot_ylo#14 ← phi( line_ydxi/(byte[]) plot_ylo#11 )
+  (byte[]) plot_yhi#14 ← phi( line_ydxi/(byte[]) plot_yhi#11 )
+  (byte[]) plot_xlo#14 ← phi( line_ydxi/(byte[]) plot_xlo#11 )
+  (byte[]) plot_xhi#14 ← phi( line_ydxi/(byte[]) plot_xhi#11 )
+  (byte) line_ydxi::yd#2 ← phi( line_ydxi/(byte) line_ydxi::yd#5 )
+  (byte) line_ydxi::xd#3 ← phi( line_ydxi/(byte) line_ydxi::xd#2 )
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#3
+  (boolean~) line_ydxi::$5 ← (byte) line_ydxi::yd#2 >= (byte) line_ydxi::e#1
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#2 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y#2 < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#2
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::y1#2 ← phi( line_ydxd/(byte) line_ydxd::y1#6 )
+  (byte[]) plot_bit#16 ← phi( line_ydxd/(byte[]) plot_bit#11 )
+  (byte[]) plot_ylo#16 ← phi( line_ydxd/(byte[]) plot_ylo#11 )
+  (byte[]) plot_yhi#16 ← phi( line_ydxd/(byte[]) plot_yhi#11 )
+  (byte[]) plot_xlo#16 ← phi( line_ydxd/(byte[]) plot_xlo#11 )
+  (byte[]) plot_xhi#16 ← phi( line_ydxd/(byte[]) plot_xhi#11 )
+  (byte) line_ydxd::yd#2 ← phi( line_ydxd/(byte) line_ydxd::yd#5 )
+  (byte) line_ydxd::xd#3 ← phi( line_ydxd/(byte) line_ydxd::xd#2 )
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#3
+  (boolean~) line_ydxd::$5 ← (byte) line_ydxd::yd#2 >= (byte) line_ydxd::e#1
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#2 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y#2 < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#2
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte[]) plot_bit#1 ← phi( line_xdyd::@1/(byte[]) plot_bit#12 line_xdyi::@1/(byte[]) plot_bit#10 line_ydxd::@1/(byte[]) plot_bit#16 line_ydxi::@1/(byte[]) plot_bit#14 )
+  (byte[]) plot_ylo#1 ← phi( line_xdyd::@1/(byte[]) plot_ylo#12 line_xdyi::@1/(byte[]) plot_ylo#10 line_ydxd::@1/(byte[]) plot_ylo#16 line_ydxi::@1/(byte[]) plot_ylo#14 )
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte[]) plot_yhi#1 ← phi( line_xdyd::@1/(byte[]) plot_yhi#12 line_xdyi::@1/(byte[]) plot_yhi#10 line_ydxd::@1/(byte[]) plot_yhi#16 line_ydxi::@1/(byte[]) plot_yhi#14 )
+  (byte[]) plot_xlo#1 ← phi( line_xdyd::@1/(byte[]) plot_xlo#12 line_xdyi::@1/(byte[]) plot_xlo#10 line_ydxd::@1/(byte[]) plot_xlo#16 line_ydxi::@1/(byte[]) plot_xlo#14 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte[]) plot_xhi#1 ← phi( line_xdyd::@1/(byte[]) plot_xhi#12 line_xdyi::@1/(byte[]) plot_xhi#10 line_ydxd::@1/(byte[]) plot_xhi#16 line_ydxi::@1/(byte[]) plot_xhi#14 )
   (byte*) plot::plotter_x#0 ← (byte) 0
   (byte*) plot::plotter_y#0 ← (byte) 0
-  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#9
+  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -5461,19 +8460,19 @@ init_plot_tables: scope:[init_plot_tables]  from main::@3
   (byte) init_plot_tables::x#0 ← (byte) 0
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@2
-  (byte[]) plot_yhi#13 ← phi( init_plot_tables/(byte[]) plot_yhi#0 )
-  (byte[]) plot_ylo#13 ← phi( init_plot_tables/(byte[]) plot_ylo#0 )
-  (byte[]) plot_bit#13 ← phi( init_plot_tables/(byte[]) plot_bit#0 )
+  (byte[]) plot_yhi#17 ← phi( init_plot_tables/(byte[]) plot_yhi#0 )
+  (byte[]) plot_ylo#17 ← phi( init_plot_tables/(byte[]) plot_ylo#0 )
+  (byte[]) plot_bit#18 ← phi( init_plot_tables/(byte[]) plot_bit#0 )
   (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) init_plot_tables::bit#0 init_plot_tables::@2/(byte) init_plot_tables::bit#4 )
-  (byte[]) plot_xhi#13 ← phi( init_plot_tables/(byte[]) plot_xhi#0 )
+  (byte[]) plot_xhi#18 ← phi( init_plot_tables/(byte[]) plot_xhi#0 )
   (byte*) BITMAP#1 ← phi( init_plot_tables/(byte*) BITMAP#0 )
-  (byte[]) plot_xlo#13 ← phi( init_plot_tables/(byte[]) plot_xlo#0 )
+  (byte[]) plot_xlo#18 ← phi( init_plot_tables/(byte[]) plot_xlo#0 )
   (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) init_plot_tables::x#0 init_plot_tables::@2/(byte) init_plot_tables::x#1 )
   (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248
-  *((byte[]) plot_xlo#13 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0
+  *((byte[]) plot_xlo#18 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0
   (byte~) init_plot_tables::$1 ← > (byte*) BITMAP#1
-  *((byte[]) plot_xhi#13 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$1
-  *((byte[]) plot_bit#13 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3
+  *((byte[]) plot_xhi#18 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$1
+  *((byte[]) plot_bit#18 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3
   (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1
   (boolean~) init_plot_tables::$4 ← (byte) init_plot_tables::bit#1 != (byte) 0
   if((boolean~) init_plot_tables::$4) goto init_plot_tables::@2
@@ -5492,16 +8491,16 @@ init_plot_tables::@6: scope:[init_plot_tables]  from init_plot_tables::@2
   (byte) init_plot_tables::y#0 ← (byte) 0
   to:init_plot_tables::@3
 init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@4 init_plot_tables::@6
-  (byte[]) plot_yhi#12 ← phi( init_plot_tables::@6/(byte[]) plot_yhi#13 )
-  (byte[]) plot_ylo#12 ← phi( init_plot_tables::@6/(byte[]) plot_ylo#13 )
+  (byte[]) plot_yhi#18 ← phi( init_plot_tables::@6/(byte[]) plot_yhi#17 )
+  (byte[]) plot_ylo#18 ← phi( init_plot_tables::@6/(byte[]) plot_ylo#17 )
   (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@6/(byte*) init_plot_tables::yoffs#0 )
   (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@6/(byte) init_plot_tables::y#0 )
   (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7
   (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2
   (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7
-  *((byte[]) plot_ylo#12 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8
+  *((byte[]) plot_ylo#18 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8
   (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2
-  *((byte[]) plot_yhi#12 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9
+  *((byte[]) plot_yhi#18 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9
   (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7
   (boolean~) init_plot_tables::$12 ← (byte~) init_plot_tables::$10 != (byte) 7
   if((boolean~) init_plot_tables::$12) goto init_plot_tables::@4
@@ -5546,43 +8545,67 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Redundant Phi (byte[]) lines_x#2 (byte[]) lines_x#0
 Redundant Phi (byte[]) lines_y#2 (byte[]) lines_y#0
 Redundant Phi (byte) lines_cnt#3 (byte) lines_cnt#0
-Redundant Phi (byte[]) plot_xhi#28 (byte[]) plot_xhi#0
-Redundant Phi (byte[]) plot_xlo#28 (byte[]) plot_xlo#0
-Redundant Phi (byte[]) plot_yhi#29 (byte[]) plot_yhi#0
-Redundant Phi (byte[]) plot_ylo#29 (byte[]) plot_ylo#0
-Redundant Phi (byte[]) plot_bit#28 (byte[]) plot_bit#0
+Redundant Phi (byte[]) plot_xhi#45 (byte[]) plot_xhi#0
+Redundant Phi (byte[]) plot_xlo#45 (byte[]) plot_xlo#0
+Redundant Phi (byte[]) plot_yhi#49 (byte[]) plot_yhi#0
+Redundant Phi (byte[]) plot_ylo#49 (byte[]) plot_ylo#0
+Redundant Phi (byte[]) plot_bit#45 (byte[]) plot_bit#0
 Redundant Phi (byte[]) lines_x#1 (byte[]) lines_x#2
 Redundant Phi (byte[]) lines_y#1 (byte[]) lines_y#2
 Redundant Phi (byte) lines_cnt#1 (byte) lines_cnt#3
-Redundant Phi (byte[]) plot_xhi#10 (byte[]) plot_xhi#28
-Redundant Phi (byte[]) plot_xlo#10 (byte[]) plot_xlo#28
-Redundant Phi (byte[]) plot_yhi#10 (byte[]) plot_yhi#29
-Redundant Phi (byte[]) plot_ylo#10 (byte[]) plot_ylo#29
-Redundant Phi (byte[]) plot_bit#10 (byte[]) plot_bit#28
-Redundant Phi (byte) line_xdyi::yd#2 (byte) line_xdyi::yd#0
-Redundant Phi (byte) line_xdyi::xd#1 (byte) line_xdyi::xd#0
-Redundant Phi (byte[]) plot_xhi#11 (byte[]) plot_xhi#10
-Redundant Phi (byte[]) plot_xlo#11 (byte[]) plot_xlo#10
-Redundant Phi (byte[]) plot_yhi#11 (byte[]) plot_yhi#10
-Redundant Phi (byte[]) plot_ylo#11 (byte[]) plot_ylo#10
-Redundant Phi (byte[]) plot_bit#11 (byte[]) plot_bit#10
-Redundant Phi (byte) line_xdyi::x1#1 (byte) line_xdyi::x1#0
-Redundant Phi (byte[]) plot_xlo#13 (byte[]) plot_xlo#0
+Redundant Phi (byte[]) plot_xhi#11 (byte[]) plot_xhi#45
+Redundant Phi (byte[]) plot_xlo#11 (byte[]) plot_xlo#45
+Redundant Phi (byte[]) plot_yhi#11 (byte[]) plot_yhi#49
+Redundant Phi (byte[]) plot_ylo#11 (byte[]) plot_ylo#49
+Redundant Phi (byte[]) plot_bit#11 (byte[]) plot_bit#45
+Redundant Phi (byte) line_xdyi::yd#3 (byte) line_xdyi::yd#2
+Redundant Phi (byte) line_xdyi::xd#2 (byte) line_xdyi::xd#5
+Redundant Phi (byte[]) plot_xhi#10 (byte[]) plot_xhi#11
+Redundant Phi (byte[]) plot_xlo#10 (byte[]) plot_xlo#11
+Redundant Phi (byte[]) plot_yhi#10 (byte[]) plot_yhi#11
+Redundant Phi (byte[]) plot_ylo#10 (byte[]) plot_ylo#11
+Redundant Phi (byte[]) plot_bit#10 (byte[]) plot_bit#11
+Redundant Phi (byte) line_xdyi::x1#2 (byte) line_xdyi::x1#6
+Redundant Phi (byte) line_xdyd::yd#3 (byte) line_xdyd::yd#2
+Redundant Phi (byte) line_xdyd::xd#2 (byte) line_xdyd::xd#5
+Redundant Phi (byte[]) plot_xhi#12 (byte[]) plot_xhi#11
+Redundant Phi (byte[]) plot_xlo#12 (byte[]) plot_xlo#11
+Redundant Phi (byte[]) plot_yhi#12 (byte[]) plot_yhi#11
+Redundant Phi (byte[]) plot_ylo#12 (byte[]) plot_ylo#11
+Redundant Phi (byte[]) plot_bit#12 (byte[]) plot_bit#11
+Redundant Phi (byte) line_xdyd::x1#2 (byte) line_xdyd::x1#6
+Redundant Phi (byte) line_ydxi::xd#3 (byte) line_ydxi::xd#2
+Redundant Phi (byte) line_ydxi::yd#2 (byte) line_ydxi::yd#5
+Redundant Phi (byte[]) plot_xhi#14 (byte[]) plot_xhi#11
+Redundant Phi (byte[]) plot_xlo#14 (byte[]) plot_xlo#11
+Redundant Phi (byte[]) plot_yhi#14 (byte[]) plot_yhi#11
+Redundant Phi (byte[]) plot_ylo#14 (byte[]) plot_ylo#11
+Redundant Phi (byte[]) plot_bit#14 (byte[]) plot_bit#11
+Redundant Phi (byte) line_ydxi::y1#2 (byte) line_ydxi::y1#6
+Redundant Phi (byte) line_ydxd::xd#3 (byte) line_ydxd::xd#2
+Redundant Phi (byte) line_ydxd::yd#2 (byte) line_ydxd::yd#5
+Redundant Phi (byte[]) plot_xhi#16 (byte[]) plot_xhi#11
+Redundant Phi (byte[]) plot_xlo#16 (byte[]) plot_xlo#11
+Redundant Phi (byte[]) plot_yhi#16 (byte[]) plot_yhi#11
+Redundant Phi (byte[]) plot_ylo#16 (byte[]) plot_ylo#11
+Redundant Phi (byte[]) plot_bit#16 (byte[]) plot_bit#11
+Redundant Phi (byte) line_ydxd::y1#2 (byte) line_ydxd::y1#6
+Redundant Phi (byte[]) plot_xlo#18 (byte[]) plot_xlo#0
 Redundant Phi (byte*) BITMAP#1 (byte*) BITMAP#0
-Redundant Phi (byte[]) plot_xhi#13 (byte[]) plot_xhi#0
-Redundant Phi (byte[]) plot_bit#13 (byte[]) plot_bit#0
-Redundant Phi (byte[]) plot_ylo#13 (byte[]) plot_ylo#0
-Redundant Phi (byte[]) plot_yhi#13 (byte[]) plot_yhi#0
-Redundant Phi (byte[]) plot_ylo#12 (byte[]) plot_ylo#13
-Redundant Phi (byte[]) plot_yhi#12 (byte[]) plot_yhi#13
+Redundant Phi (byte[]) plot_xhi#18 (byte[]) plot_xhi#0
+Redundant Phi (byte[]) plot_bit#18 (byte[]) plot_bit#0
+Redundant Phi (byte[]) plot_ylo#17 (byte[]) plot_ylo#0
+Redundant Phi (byte[]) plot_yhi#17 (byte[]) plot_yhi#0
+Redundant Phi (byte[]) plot_ylo#18 (byte[]) plot_ylo#17
+Redundant Phi (byte[]) plot_yhi#18 (byte[]) plot_yhi#17
 Redundant Phi (byte*) BITMAP#3 (byte*) BITMAP#0
 Redundant Phi (byte*) SCREEN#1 (byte*) SCREEN#0
 Redundant Phi (byte*) SCREEN#2 (byte*) SCREEN#1
@@ -5613,8 +8636,8 @@ CONTROL FLOW GRAPH
   (byte[]) lines_x#0 ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y#0 ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt#0 ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((byte*) BGCOL#0) ← (byte) 0
   *((byte*) FGCOL#0) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM#0 | (byte) DEN#0
@@ -5666,125 +8689,269 @@ lines::@return: scope:[lines]  from lines::@3
 line: scope:[line]  from lines::@1
   (boolean~) line::$1 ← (byte) line::x0#0 >= (byte) line::x1#0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  (boolean~) line::$15 ← (byte) line::y0#0 >= (byte) line::y1#0
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  (boolean~) line::$17 ← (byte) line::y0#0 >= (byte) line::y1#0
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   (boolean~) line::$4 ← (byte) line::y0#0 >= (byte) line::y1#0
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  (boolean~) line::$7 ← (byte) line::yd#0 >= (byte) line::xd#1
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  (boolean~) line::$12 ← (byte) line::yd#0 >= (byte) line::xd#1
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  (boolean~) line::$7 ← (byte) line::yd#1 >= (byte) line::xd#1
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  (boolean~) line::$25 ← (byte) line::yd#10 >= (byte) line::xd#0
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  (boolean~) line::$20 ← (byte) line::yd#3 >= (byte) line::xd#0
+  if((boolean~) line::$20) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#0 >= (byte) line_xdyi::e#1
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#5 >= (byte) line_xdyi::e#1
   if((boolean~) line_xdyi::$5) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#1 < (byte~) line_xdyi::$8
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#2 < (byte~) line_xdyi::$8
   if((boolean~) line_xdyi::$9) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte[]) plot_bit#1 ← phi( line::@15/(byte[]) plot_bit#0 line::@17/(byte[]) plot_bit#0 line::@19/(byte[]) plot_bit#0 line::@2/(byte[]) plot_bit#0 line::@22/(byte[]) plot_bit#0 line::@24/(byte[]) plot_bit#0 line::@3/(byte[]) plot_bit#0 line::@7/(byte[]) plot_bit#0 line_xdyi::@1/(byte[]) plot_bit#0 )
-  (byte[]) plot_ylo#1 ← phi( line::@15/(byte[]) plot_ylo#0 line::@17/(byte[]) plot_ylo#0 line::@19/(byte[]) plot_ylo#0 line::@2/(byte[]) plot_ylo#0 line::@22/(byte[]) plot_ylo#0 line::@24/(byte[]) plot_ylo#0 line::@3/(byte[]) plot_ylo#0 line::@7/(byte[]) plot_ylo#0 line_xdyi::@1/(byte[]) plot_ylo#0 )
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte[]) plot_yhi#1 ← phi( line::@15/(byte[]) plot_yhi#0 line::@17/(byte[]) plot_yhi#0 line::@19/(byte[]) plot_yhi#0 line::@2/(byte[]) plot_yhi#0 line::@22/(byte[]) plot_yhi#0 line::@24/(byte[]) plot_yhi#0 line::@3/(byte[]) plot_yhi#0 line::@7/(byte[]) plot_yhi#0 line_xdyi::@1/(byte[]) plot_yhi#0 )
-  (byte[]) plot_xlo#1 ← phi( line::@15/(byte[]) plot_xlo#0 line::@17/(byte[]) plot_xlo#0 line::@19/(byte[]) plot_xlo#0 line::@2/(byte[]) plot_xlo#0 line::@22/(byte[]) plot_xlo#0 line::@24/(byte[]) plot_xlo#0 line::@3/(byte[]) plot_xlo#0 line::@7/(byte[]) plot_xlo#0 line_xdyi::@1/(byte[]) plot_xlo#0 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte[]) plot_xhi#1 ← phi( line::@15/(byte[]) plot_xhi#0 line::@17/(byte[]) plot_xhi#0 line::@19/(byte[]) plot_xhi#0 line::@2/(byte[]) plot_xhi#0 line::@22/(byte[]) plot_xhi#0 line::@24/(byte[]) plot_xhi#0 line::@3/(byte[]) plot_xhi#0 line::@7/(byte[]) plot_xhi#0 line_xdyi::@1/(byte[]) plot_xhi#0 )
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  (boolean~) line_xdyd::$5 ← (byte) line_xdyd::xd#5 >= (byte) line_xdyd::e#1
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x#2 < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  (boolean~) line_ydxi::$5 ← (byte) line_ydxi::yd#5 >= (byte) line_ydxi::e#1
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y#2 < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  (boolean~) line_ydxd::$5 ← (byte) line_ydxd::yd#5 >= (byte) line_ydxd::e#1
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y#2 < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte[]) plot_bit#1 ← phi( line_xdyd::@1/(byte[]) plot_bit#0 line_xdyi::@1/(byte[]) plot_bit#0 line_ydxd::@1/(byte[]) plot_bit#0 line_ydxi::@1/(byte[]) plot_bit#0 )
+  (byte[]) plot_ylo#1 ← phi( line_xdyd::@1/(byte[]) plot_ylo#0 line_xdyi::@1/(byte[]) plot_ylo#0 line_ydxd::@1/(byte[]) plot_ylo#0 line_ydxi::@1/(byte[]) plot_ylo#0 )
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte[]) plot_yhi#1 ← phi( line_xdyd::@1/(byte[]) plot_yhi#0 line_xdyi::@1/(byte[]) plot_yhi#0 line_ydxd::@1/(byte[]) plot_yhi#0 line_ydxi::@1/(byte[]) plot_yhi#0 )
+  (byte[]) plot_xlo#1 ← phi( line_xdyd::@1/(byte[]) plot_xlo#0 line_xdyi::@1/(byte[]) plot_xlo#0 line_ydxd::@1/(byte[]) plot_xlo#0 line_ydxi::@1/(byte[]) plot_xlo#0 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte[]) plot_xhi#1 ← phi( line_xdyd::@1/(byte[]) plot_xhi#0 line_xdyi::@1/(byte[]) plot_xhi#0 line_ydxd::@1/(byte[]) plot_xhi#0 line_ydxi::@1/(byte[]) plot_xhi#0 )
   (byte*) plot::plotter_x#0 ← (byte) 0
   (byte*) plot::plotter_y#0 ← (byte) 0
-  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#9
+  (byte~) plot::$0 ← (byte[]) plot_xhi#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (byte[]) plot_xlo#1 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (byte[]) plot_yhi#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (byte[]) plot_ylo#1 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (byte[]) plot_bit#1 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -5870,10 +9037,10 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Redundant Phi (byte[]) plot_xhi#1 (byte[]) plot_xhi#0
 Redundant Phi (byte[]) plot_xlo#1 (byte[]) plot_xlo#0
@@ -5907,8 +9074,8 @@ CONTROL FLOW GRAPH
   (byte[]) lines_x#0 ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y#0 ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt#0 ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((byte*) BGCOL#0) ← (byte) 0
   *((byte*) FGCOL#0) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM#0 | (byte) DEN#0
@@ -5960,120 +9127,264 @@ lines::@return: scope:[lines]  from lines::@3
 line: scope:[line]  from lines::@1
   (boolean~) line::$1 ← (byte) line::x0#0 >= (byte) line::x1#0
   if((boolean~) line::$1) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  (boolean~) line::$15 ← (byte) line::y0#0 >= (byte) line::y1#0
-  if((boolean~) line::$15) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  (boolean~) line::$17 ← (byte) line::y0#0 >= (byte) line::y1#0
+  if((boolean~) line::$17) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   (boolean~) line::$4 ← (byte) line::y0#0 >= (byte) line::y1#0
   if((boolean~) line::$4) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  (boolean~) line::$7 ← (byte) line::yd#0 >= (byte) line::xd#1
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  (boolean~) line::$12 ← (byte) line::yd#0 >= (byte) line::xd#1
+  if((boolean~) line::$12) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  (boolean~) line::$7 ← (byte) line::yd#1 >= (byte) line::xd#1
   if((boolean~) line::$7) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
+  to:line::@17
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  (boolean~) line::$25 ← (byte) line::yd#10 >= (byte) line::xd#0
+  if((boolean~) line::$25) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  (boolean~) line::$20 ← (byte) line::yd#3 >= (byte) line::xd#0
+  if((boolean~) line::$20) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#0 >= (byte) line_xdyi::e#1
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  (boolean~) line_xdyi::$5 ← (byte) line_xdyi::xd#5 >= (byte) line_xdyi::e#1
   if((boolean~) line_xdyi::$5) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#1 < (byte~) line_xdyi::$8
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  (boolean~) line_xdyi::$9 ← (byte) line_xdyi::x#2 < (byte~) line_xdyi::$8
   if((boolean~) line_xdyi::$9) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  (boolean~) line_xdyd::$5 ← (byte) line_xdyd::xd#5 >= (byte) line_xdyd::e#1
+  if((boolean~) line_xdyd::$5) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  (boolean~) line_xdyd::$9 ← (byte) line_xdyd::x#2 < (byte~) line_xdyd::$8
+  if((boolean~) line_xdyd::$9) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  (boolean~) line_ydxi::$5 ← (byte) line_ydxi::yd#5 >= (byte) line_ydxi::e#1
+  if((boolean~) line_ydxi::$5) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  (boolean~) line_ydxi::$9 ← (byte) line_ydxi::y#2 < (byte~) line_ydxi::$8
+  if((boolean~) line_ydxi::$9) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  (boolean~) line_ydxd::$5 ← (byte) line_ydxd::yd#5 >= (byte) line_ydxd::e#1
+  if((boolean~) line_ydxd::$5) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  (boolean~) line_ydxd::$9 ← (byte) line_ydxd::y#2 < (byte~) line_ydxd::$8
+  if((boolean~) line_ydxd::$9) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
   (byte*) plot::plotter_x#0 ← (byte) 0
   (byte*) plot::plotter_y#0 ← (byte) 0
-  (byte~) plot::$0 ← (byte[]) plot_xhi#0 *idx (byte) plot::x#9
+  (byte~) plot::$0 ← (byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -6159,18 +9470,27 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Simple Condition (boolean~) lines::$7 if((byte) lines::l#1<(byte) lines_cnt#0) goto lines::@1
 Simple Condition (boolean~) line::$1 if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-Simple Condition (boolean~) line::$15 if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
+Simple Condition (boolean~) line::$17 if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
 Simple Condition (boolean~) line::$4 if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-Simple Condition (boolean~) line::$7 if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-Simple Condition (boolean~) line_xdyi::$5 if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2
-Simple Condition (boolean~) line_xdyi::$9 if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1
+Simple Condition (boolean~) line::$12 if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+Simple Condition (boolean~) line::$7 if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
+Simple Condition (boolean~) line::$25 if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+Simple Condition (boolean~) line::$20 if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
+Simple Condition (boolean~) line_xdyi::$5 if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2
+Simple Condition (boolean~) line_xdyi::$9 if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1
+Simple Condition (boolean~) line_xdyd::$5 if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2
+Simple Condition (boolean~) line_xdyd::$9 if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1
+Simple Condition (boolean~) line_ydxi::$5 if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2
+Simple Condition (boolean~) line_ydxi::$9 if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1
+Simple Condition (boolean~) line_ydxd::$5 if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2
+Simple Condition (boolean~) line_ydxd::$9 if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1
 Simple Condition (boolean~) init_plot_tables::$4 if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@2
 Simple Condition (boolean~) init_plot_tables::$5 if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1
 Simple Condition (boolean~) init_plot_tables::$12 if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4
@@ -6204,8 +9524,8 @@ CONTROL FLOW GRAPH
   (byte[]) lines_x#0 ← { (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10, (byte) 40, (byte) 60 }
   (byte[]) lines_y#0 ← { (byte) 10, (byte) 40, (byte) 60, (byte) 80, (byte) 110, (byte) 80, (byte) 60, (byte) 40, (byte) 10 }
   (byte) lines_cnt#0 ← (byte) 8
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((byte*) BGCOL#0) ← (byte) 0
   *((byte*) FGCOL#0) ← (byte) 0
   (byte~) main::$0 ← (byte) BMM#0 | (byte) DEN#0
@@ -6255,115 +9575,250 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
   to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
   (byte*) plot::plotter_x#0 ← (byte) 0
   (byte*) plot::plotter_y#0 ← (byte) 0
-  (byte~) plot::$0 ← (byte[]) plot_xhi#0 *idx (byte) plot::x#9
+  (byte~) plot::$0 ← (byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -6443,10 +9898,10 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Constant (const byte*) COLS#0 = 55296
 Constant (const byte*) BGCOL#0 = 53280
@@ -6483,8 +9938,8 @@ Constant (const byte) init_plot_tables::y#0 = 0
 Succesful SSA optimization Pass2ConstantIdentification
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((const byte*) BGCOL#0) ← (byte) 0
   *((const byte*) FGCOL#0) ← (byte) 0
   (byte~) main::$0 ← (const byte) BMM#0 | (const byte) DEN#0
@@ -6533,113 +9988,248 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
   to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (const byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (const byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -6714,10 +10304,10 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Constant (const byte) main::$0 = BMM#0|DEN#0
 Constant (const byte) init_plot_tables::$1 = >BITMAP#0
@@ -6728,8 +10318,8 @@ Constant (const byte*) init_screen::$2 = SCREEN#0+1024
 Succesful SSA optimization Pass2ConstantIdentification
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((const byte*) BGCOL#0) ← (byte) 0
   *((const byte*) FGCOL#0) ← (byte) 0
   (byte~) main::$1 ← (const byte) main::$0 | (const byte) RSEL#0
@@ -6777,113 +10367,248 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
   to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (const byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (const byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -6953,17 +10678,17 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Constant (const byte) main::$1 = main::$0|RSEL#0
 Succesful SSA optimization Pass2ConstantIdentification
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((const byte*) BGCOL#0) ← (byte) 0
   *((const byte*) FGCOL#0) ← (byte) 0
   (byte~) main::$2 ← (const byte) main::$1 | (byte) 3
@@ -7010,113 +10735,248 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
   to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (const byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (const byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -7186,17 +11046,17 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Constant (const byte) main::$2 = main::$1|3
 Succesful SSA optimization Pass2ConstantIdentification
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((const byte*) BGCOL#0) ← (byte) 0
   *((const byte*) FGCOL#0) ← (byte) 0
   *((const byte*) D011#0) ← (const byte) main::$2
@@ -7242,113 +11102,248 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
   to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (const byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (const byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -7418,10 +11413,10 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
@@ -7429,13 +11424,17 @@ Consolidated referenced array index constant in assignment lines::$2
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
 Consolidated referenced array index constant in assignment lines::$5
-Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::x#2
-Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::y#2
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyd::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxi::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxi::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxd::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
@@ -7445,8 +11444,8 @@ Multiple usages for variable. Not optimizing sub-constant (byte*) init_plot_tabl
 Succesful SSA optimization Pass2ConstantAdditionElimination
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((const byte*) BGCOL#0) ← (byte) 0
   *((const byte*) FGCOL#0) ← (byte) 0
   *((const byte*) D011#0) ← (const byte) main::$2
@@ -7492,113 +11491,248 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
   to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (const byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (const byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -7668,20 +11802,24 @@ init_screen::@2: scope:[init_screen]  from init_screen::@2 init_screen::@3
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
-Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::x#2
-Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::y#2
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyd::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxi::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxi::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxd::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
@@ -7695,8 +11833,8 @@ Culled Empty Block (label) init_screen::@3
 Succesful SSA optimization Pass2CullEmptyBlocks
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((const byte*) BGCOL#0) ← (byte) 0
   *((const byte*) FGCOL#0) ← (byte) 0
   *((const byte*) D011#0) ← (const byte) main::$2
@@ -7740,113 +11878,248 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
   to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (const byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (const byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -7912,45 +12185,70 @@ init_screen::@2: scope:[init_screen]  from init_screen::@1 init_screen::@2
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Not culling empty block because it shares successor with its predecessor. (label) init_plot_tables::@5
 Not aliassing across scopes: line::x0#0 lines::$0
 Not aliassing across scopes: line::x1#0 lines::$2
 Not aliassing across scopes: line::y0#0 lines::$3
 Not aliassing across scopes: line::y1#0 lines::$5
-Not aliassing across scopes: plot::x#0 line::x0#0
-Not aliassing across scopes: plot::y#0 line::y0#0
-Not aliassing across scopes: plot::x#1 line::x1#0
-Not aliassing across scopes: plot::y#1 line::y1#0
-Not aliassing across scopes: plot::x#2 line::x0#0
-Not aliassing across scopes: plot::y#2 line::y0#0
-Not aliassing across scopes: plot::x#3 line::x1#0
-Not aliassing across scopes: plot::y#3 line::y1#0
+Not aliassing across scopes: line_ydxi::y#0 line::y0#0
+Not aliassing across scopes: line_ydxi::x#0 line::x0#0
+Not aliassing across scopes: line_ydxi::y1#0 line::y1#0
+Not aliassing across scopes: line_ydxi::yd#0 line::yd#1
+Not aliassing across scopes: line_ydxi::xd#0 line::xd#1
 Not aliassing across scopes: line_xdyi::x#0 line::x0#0
 Not aliassing across scopes: line_xdyi::y#0 line::y0#0
 Not aliassing across scopes: line_xdyi::x1#0 line::x1#0
 Not aliassing across scopes: line_xdyi::xd#0 line::xd#1
-Not aliassing across scopes: line_xdyi::yd#0 line::yd#0
-Not aliassing across scopes: plot::x#4 line::x0#0
-Not aliassing across scopes: plot::y#4 line::y0#0
-Not aliassing across scopes: plot::x#5 line::x1#0
-Not aliassing across scopes: plot::y#5 line::y1#0
-Not aliassing across scopes: plot::x#6 line::x0#0
-Not aliassing across scopes: plot::y#6 line::y0#0
-Not aliassing across scopes: plot::x#7 line::x1#0
-Not aliassing across scopes: plot::y#7 line::y1#0
-Not aliassing across scopes: plot::x#8 line_xdyi::x#2
-Not aliassing across scopes: plot::y#8 line_xdyi::y#2
+Not aliassing across scopes: line_xdyi::yd#0 line::yd#1
+Not aliassing across scopes: line_ydxd::y#0 line::y1#0
+Not aliassing across scopes: line_ydxd::x#0 line::x1#0
+Not aliassing across scopes: line_ydxd::y1#0 line::y0#0
+Not aliassing across scopes: line_ydxd::yd#0 line::yd#0
+Not aliassing across scopes: line_ydxd::xd#0 line::xd#1
+Not aliassing across scopes: line_xdyd::x#0 line::x0#0
+Not aliassing across scopes: line_xdyd::y#0 line::y0#0
+Not aliassing across scopes: line_xdyd::x1#0 line::x1#0
+Not aliassing across scopes: line_xdyd::xd#0 line::xd#1
+Not aliassing across scopes: line_xdyd::yd#0 line::yd#0
+Not aliassing across scopes: line_ydxd::y#1 line::y0#0
+Not aliassing across scopes: line_ydxd::x#1 line::x0#0
+Not aliassing across scopes: line_ydxd::y1#1 line::y1#0
+Not aliassing across scopes: line_ydxd::yd#1 line::yd#3
+Not aliassing across scopes: line_ydxd::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyd::x#1 line::x1#0
+Not aliassing across scopes: line_xdyd::y#1 line::y1#0
+Not aliassing across scopes: line_xdyd::x1#1 line::x0#0
+Not aliassing across scopes: line_xdyd::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyd::yd#1 line::yd#3
+Not aliassing across scopes: line_ydxi::y#1 line::y1#0
+Not aliassing across scopes: line_ydxi::x#1 line::x1#0
+Not aliassing across scopes: line_ydxi::y1#1 line::y0#0
+Not aliassing across scopes: line_ydxi::yd#1 line::yd#10
+Not aliassing across scopes: line_ydxi::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyi::x#1 line::x1#0
+Not aliassing across scopes: line_xdyi::y#1 line::y1#0
+Not aliassing across scopes: line_xdyi::x1#1 line::x0#0
+Not aliassing across scopes: line_xdyi::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyi::yd#1 line::yd#10
+Not aliassing across scopes: plot::x#0 line_xdyi::x#3
+Not aliassing across scopes: plot::y#0 line_xdyi::y#3
+Not aliassing across scopes: plot::x#1 line_xdyd::x#3
+Not aliassing across scopes: plot::y#1 line_xdyd::y#3
+Not aliassing across scopes: plot::x#2 line_ydxi::x#3
+Not aliassing across scopes: plot::y#2 line_ydxi::y#3
+Not aliassing across scopes: plot::x#3 line_ydxd::x#3
+Not aliassing across scopes: plot::y#3 line_ydxd::y#3
 Alias (byte) lines::l#2 = (byte~) lines::$1 (byte~) lines::$4 
 Succesful SSA optimization Pass2AliasElimination
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((const byte*) BGCOL#0) ← (byte) 0
   *((const byte*) FGCOL#0) ← (byte) 0
   *((const byte*) D011#0) ← (const byte) main::$2
@@ -7992,113 +12290,248 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
   to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (const byte*) plot::plotter_x#0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (const byte*) plot::plotter_y#0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -8164,49 +12597,78 @@ init_screen::@2: scope:[init_screen]  from init_screen::@1 init_screen::@2
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 Not aliassing across scopes: line::x0#0 lines::$0
 Not aliassing across scopes: line::x1#0 lines::$2
 Not aliassing across scopes: line::y0#0 lines::$3
 Not aliassing across scopes: line::y1#0 lines::$5
-Not aliassing across scopes: plot::x#0 line::x0#0
-Not aliassing across scopes: plot::y#0 line::y0#0
-Not aliassing across scopes: plot::x#1 line::x1#0
-Not aliassing across scopes: plot::y#1 line::y1#0
-Not aliassing across scopes: plot::x#2 line::x0#0
-Not aliassing across scopes: plot::y#2 line::y0#0
-Not aliassing across scopes: plot::x#3 line::x1#0
-Not aliassing across scopes: plot::y#3 line::y1#0
+Not aliassing across scopes: line_ydxi::y#0 line::y0#0
+Not aliassing across scopes: line_ydxi::x#0 line::x0#0
+Not aliassing across scopes: line_ydxi::y1#0 line::y1#0
+Not aliassing across scopes: line_ydxi::yd#0 line::yd#1
+Not aliassing across scopes: line_ydxi::xd#0 line::xd#1
 Not aliassing across scopes: line_xdyi::x#0 line::x0#0
 Not aliassing across scopes: line_xdyi::y#0 line::y0#0
 Not aliassing across scopes: line_xdyi::x1#0 line::x1#0
 Not aliassing across scopes: line_xdyi::xd#0 line::xd#1
-Not aliassing across scopes: line_xdyi::yd#0 line::yd#0
-Not aliassing across scopes: plot::x#4 line::x0#0
-Not aliassing across scopes: plot::y#4 line::y0#0
-Not aliassing across scopes: plot::x#5 line::x1#0
-Not aliassing across scopes: plot::y#5 line::y1#0
-Not aliassing across scopes: plot::x#6 line::x0#0
-Not aliassing across scopes: plot::y#6 line::y0#0
-Not aliassing across scopes: plot::x#7 line::x1#0
-Not aliassing across scopes: plot::y#7 line::y1#0
-Not aliassing across scopes: plot::x#8 line_xdyi::x#2
-Not aliassing across scopes: plot::y#8 line_xdyi::y#2
+Not aliassing across scopes: line_xdyi::yd#0 line::yd#1
+Not aliassing across scopes: line_ydxd::y#0 line::y1#0
+Not aliassing across scopes: line_ydxd::x#0 line::x1#0
+Not aliassing across scopes: line_ydxd::y1#0 line::y0#0
+Not aliassing across scopes: line_ydxd::yd#0 line::yd#0
+Not aliassing across scopes: line_ydxd::xd#0 line::xd#1
+Not aliassing across scopes: line_xdyd::x#0 line::x0#0
+Not aliassing across scopes: line_xdyd::y#0 line::y0#0
+Not aliassing across scopes: line_xdyd::x1#0 line::x1#0
+Not aliassing across scopes: line_xdyd::xd#0 line::xd#1
+Not aliassing across scopes: line_xdyd::yd#0 line::yd#0
+Not aliassing across scopes: line_ydxd::y#1 line::y0#0
+Not aliassing across scopes: line_ydxd::x#1 line::x0#0
+Not aliassing across scopes: line_ydxd::y1#1 line::y1#0
+Not aliassing across scopes: line_ydxd::yd#1 line::yd#3
+Not aliassing across scopes: line_ydxd::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyd::x#1 line::x1#0
+Not aliassing across scopes: line_xdyd::y#1 line::y1#0
+Not aliassing across scopes: line_xdyd::x1#1 line::x0#0
+Not aliassing across scopes: line_xdyd::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyd::yd#1 line::yd#3
+Not aliassing across scopes: line_ydxi::y#1 line::y1#0
+Not aliassing across scopes: line_ydxi::x#1 line::x1#0
+Not aliassing across scopes: line_ydxi::y1#1 line::y0#0
+Not aliassing across scopes: line_ydxi::yd#1 line::yd#10
+Not aliassing across scopes: line_ydxi::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyi::x#1 line::x1#0
+Not aliassing across scopes: line_xdyi::y#1 line::y1#0
+Not aliassing across scopes: line_xdyi::x1#1 line::x0#0
+Not aliassing across scopes: line_xdyi::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyi::yd#1 line::yd#10
+Not aliassing across scopes: plot::x#0 line_xdyi::x#3
+Not aliassing across scopes: plot::y#0 line_xdyi::y#3
+Not aliassing across scopes: plot::x#1 line_xdyd::x#3
+Not aliassing across scopes: plot::y#1 line_xdyd::y#3
+Not aliassing across scopes: plot::x#2 line_ydxi::x#3
+Not aliassing across scopes: plot::y#2 line_ydxi::y#3
+Not aliassing across scopes: plot::x#3 line_ydxd::x#3
+Not aliassing across scopes: plot::y#3 line_ydxd::y#3
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
-Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::x#2
-Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::y#2
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyd::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxi::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxi::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxd::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
@@ -8218,40 +12680,69 @@ Not aliassing across scopes: line::x0#0 lines::$0
 Not aliassing across scopes: line::x1#0 lines::$2
 Not aliassing across scopes: line::y0#0 lines::$3
 Not aliassing across scopes: line::y1#0 lines::$5
-Not aliassing across scopes: plot::x#0 line::x0#0
-Not aliassing across scopes: plot::y#0 line::y0#0
-Not aliassing across scopes: plot::x#1 line::x1#0
-Not aliassing across scopes: plot::y#1 line::y1#0
-Not aliassing across scopes: plot::x#2 line::x0#0
-Not aliassing across scopes: plot::y#2 line::y0#0
-Not aliassing across scopes: plot::x#3 line::x1#0
-Not aliassing across scopes: plot::y#3 line::y1#0
+Not aliassing across scopes: line_ydxi::y#0 line::y0#0
+Not aliassing across scopes: line_ydxi::x#0 line::x0#0
+Not aliassing across scopes: line_ydxi::y1#0 line::y1#0
+Not aliassing across scopes: line_ydxi::yd#0 line::yd#1
+Not aliassing across scopes: line_ydxi::xd#0 line::xd#1
 Not aliassing across scopes: line_xdyi::x#0 line::x0#0
 Not aliassing across scopes: line_xdyi::y#0 line::y0#0
 Not aliassing across scopes: line_xdyi::x1#0 line::x1#0
 Not aliassing across scopes: line_xdyi::xd#0 line::xd#1
-Not aliassing across scopes: line_xdyi::yd#0 line::yd#0
-Not aliassing across scopes: plot::x#4 line::x0#0
-Not aliassing across scopes: plot::y#4 line::y0#0
-Not aliassing across scopes: plot::x#5 line::x1#0
-Not aliassing across scopes: plot::y#5 line::y1#0
-Not aliassing across scopes: plot::x#6 line::x0#0
-Not aliassing across scopes: plot::y#6 line::y0#0
-Not aliassing across scopes: plot::x#7 line::x1#0
-Not aliassing across scopes: plot::y#7 line::y1#0
-Not aliassing across scopes: plot::x#8 line_xdyi::x#2
-Not aliassing across scopes: plot::y#8 line_xdyi::y#2
+Not aliassing across scopes: line_xdyi::yd#0 line::yd#1
+Not aliassing across scopes: line_ydxd::y#0 line::y1#0
+Not aliassing across scopes: line_ydxd::x#0 line::x1#0
+Not aliassing across scopes: line_ydxd::y1#0 line::y0#0
+Not aliassing across scopes: line_ydxd::yd#0 line::yd#0
+Not aliassing across scopes: line_ydxd::xd#0 line::xd#1
+Not aliassing across scopes: line_xdyd::x#0 line::x0#0
+Not aliassing across scopes: line_xdyd::y#0 line::y0#0
+Not aliassing across scopes: line_xdyd::x1#0 line::x1#0
+Not aliassing across scopes: line_xdyd::xd#0 line::xd#1
+Not aliassing across scopes: line_xdyd::yd#0 line::yd#0
+Not aliassing across scopes: line_ydxd::y#1 line::y0#0
+Not aliassing across scopes: line_ydxd::x#1 line::x0#0
+Not aliassing across scopes: line_ydxd::y1#1 line::y1#0
+Not aliassing across scopes: line_ydxd::yd#1 line::yd#3
+Not aliassing across scopes: line_ydxd::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyd::x#1 line::x1#0
+Not aliassing across scopes: line_xdyd::y#1 line::y1#0
+Not aliassing across scopes: line_xdyd::x1#1 line::x0#0
+Not aliassing across scopes: line_xdyd::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyd::yd#1 line::yd#3
+Not aliassing across scopes: line_ydxi::y#1 line::y1#0
+Not aliassing across scopes: line_ydxi::x#1 line::x1#0
+Not aliassing across scopes: line_ydxi::y1#1 line::y0#0
+Not aliassing across scopes: line_ydxi::yd#1 line::yd#10
+Not aliassing across scopes: line_ydxi::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyi::x#1 line::x1#0
+Not aliassing across scopes: line_xdyi::y#1 line::y1#0
+Not aliassing across scopes: line_xdyi::x1#1 line::x0#0
+Not aliassing across scopes: line_xdyi::xd#1 line::xd#0
+Not aliassing across scopes: line_xdyi::yd#1 line::yd#10
+Not aliassing across scopes: plot::x#0 line_xdyi::x#3
+Not aliassing across scopes: plot::y#0 line_xdyi::y#3
+Not aliassing across scopes: plot::x#1 line_xdyd::x#3
+Not aliassing across scopes: plot::y#1 line_xdyd::y#3
+Not aliassing across scopes: plot::x#2 line_ydxi::x#3
+Not aliassing across scopes: plot::y#2 line_ydxi::y#3
+Not aliassing across scopes: plot::x#3 line_ydxd::x#3
+Not aliassing across scopes: plot::y#3 line_ydxd::y#3
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
 Multiple usages for variable. Not optimizing sub-constant (byte) lines::l#2
-Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::x#2
-Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::y#2
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#9
-Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#9
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyi::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_xdyd::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxi::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxi::x#3
+Multiple usages for variable. Not optimizing sub-constant (byte) line_ydxd::y#3
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::y#4
+Multiple usages for variable. Not optimizing sub-constant (byte) plot::x#4
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
 Multiple usages for variable. Not optimizing sub-constant (byte) init_plot_tables::x#2
@@ -8300,8 +12791,8 @@ Constant inlined init_screen::b#0 = (const byte*) BITMAP#0
 Succesful SSA optimization Pass2ConstantInlining
 CONTROL FLOW GRAPH
 @begin: scope:[]  from
-  to:@7
-main: scope:[main]  from @7
+  to:@10
+main: scope:[main]  from @10
   *((const byte*) BGCOL#0) ← (byte) 0
   *((const byte*) FGCOL#0) ← (byte) 0
   *((const byte*) D011#0) ← (const byte) BMM#0|(const byte) DEN#0|(const byte) RSEL#0|(byte) 3
@@ -8343,113 +12834,248 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-  to:line::@9
-line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
   to:line::@15
-line::@9: scope:[line]  from line
+line::@1: scope:[line]  from line
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
+  to:line::@23
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-  to:line::@10
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  call plot param-assignment
+  to:line::@16
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+  to:line::@20
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
   to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  call plot param-assignment
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  call line_ydxi param-assignment
   to:line::@return
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-  to:line::@11
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  call plot param-assignment
-  to:line::@return
-line::@11: scope:[line]  from line::@10
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
   call line_xdyi param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  call plot param-assignment
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  call line_ydxd param-assignment
   to:line::@return
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  call plot param-assignment
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+  to:line::@27
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  call line_ydxd param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  call line_xdyd param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  call line_ydxi param-assignment
+  to:line::@return
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  call line_xdyi param-assignment
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2
   to:line_xdyi::@3
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1
   to:line_xdyi::@return
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
   to:line_xdyi::@2
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 )
-  (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 )
-  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2
+  to:line_xdyd::@3
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1
+  to:line_xdyd::@return
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  to:line_xdyd::@2
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2
+  to:line_ydxi::@3
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1
+  to:line_ydxi::@return
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  to:line_ydxi::@2
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2
+  to:line_ydxd::@3
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1
+  to:line_ydxd::@return
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  to:line_ydxd::@2
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 )
+  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
@@ -8515,13 +13141,13 @@ init_screen::@2: scope:[init_screen]  from init_screen::@1 init_screen::@2
 init_screen::@return: scope:[init_screen]  from init_screen::@2
   return 
   to:@return
-@7: scope:[]  from @begin
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
+@end: scope:[]  from @10
 
 FINAL SYMBOL TABLE
-(label) @7
+(label) @10
 (label) @begin
 (label) @end
 (byte*) BGCOL
@@ -8597,15 +13223,17 @@ FINAL SYMBOL TABLE
 (void()) line((byte) line::x0 , (byte) line::x1 , (byte) line::y0 , (byte) line::y1)
 (label) line::@1
 (label) line::@10
-(label) line::@11
+(label) line::@13
 (label) line::@15
+(label) line::@16
 (label) line::@17
-(label) line::@19
 (label) line::@2
-(label) line::@22
+(label) line::@20
+(label) line::@23
 (label) line::@24
+(label) line::@27
 (label) line::@3
-(label) line::@7
+(label) line::@6
 (label) line::@9
 (label) line::@return
 (byte) line::x0
@@ -8621,6 +13249,47 @@ FINAL SYMBOL TABLE
 (byte) line::y1#0
 (byte) line::yd
 (byte) line::yd#0
+(byte) line::yd#1
+(byte) line::yd#10
+(byte) line::yd#3
+(void()) line_xdyd((byte) line_xdyd::x , (byte) line_xdyd::y , (byte) line_xdyd::x1 , (byte) line_xdyd::xd , (byte) line_xdyd::yd)
+(byte~) line_xdyd::$8
+(label) line_xdyd::@1
+(label) line_xdyd::@2
+(label) line_xdyd::@3
+(label) line_xdyd::@5
+(label) line_xdyd::@return
+(byte) line_xdyd::e
+(byte) line_xdyd::e#0
+(byte) line_xdyd::e#1
+(byte) line_xdyd::e#2
+(byte) line_xdyd::e#3
+(byte) line_xdyd::e#6
+(byte) line_xdyd::x
+(byte) line_xdyd::x#0
+(byte) line_xdyd::x#1
+(byte) line_xdyd::x#2
+(byte) line_xdyd::x#3
+(byte) line_xdyd::x#6
+(byte) line_xdyd::x1
+(byte) line_xdyd::x1#0
+(byte) line_xdyd::x1#1
+(byte) line_xdyd::x1#6
+(byte) line_xdyd::xd
+(byte) line_xdyd::xd#0
+(byte) line_xdyd::xd#1
+(byte) line_xdyd::xd#5
+(byte) line_xdyd::y
+(byte) line_xdyd::y#0
+(byte) line_xdyd::y#1
+(byte) line_xdyd::y#2
+(byte) line_xdyd::y#3
+(byte) line_xdyd::y#5
+(byte) line_xdyd::y#6
+(byte) line_xdyd::yd
+(byte) line_xdyd::yd#0
+(byte) line_xdyd::yd#1
+(byte) line_xdyd::yd#2
 (void()) line_xdyi((byte) line_xdyi::x , (byte) line_xdyi::y , (byte) line_xdyi::x1 , (byte) line_xdyi::xd , (byte) line_xdyi::yd)
 (byte~) line_xdyi::$8
 (label) line_xdyi::@1
@@ -8638,17 +13307,103 @@ FINAL SYMBOL TABLE
 (byte) line_xdyi::x#0
 (byte) line_xdyi::x#1
 (byte) line_xdyi::x#2
+(byte) line_xdyi::x#3
+(byte) line_xdyi::x#6
 (byte) line_xdyi::x1
 (byte) line_xdyi::x1#0
+(byte) line_xdyi::x1#1
+(byte) line_xdyi::x1#6
 (byte) line_xdyi::xd
 (byte) line_xdyi::xd#0
+(byte) line_xdyi::xd#1
+(byte) line_xdyi::xd#5
 (byte) line_xdyi::y
 (byte) line_xdyi::y#0
 (byte) line_xdyi::y#1
 (byte) line_xdyi::y#2
+(byte) line_xdyi::y#3
 (byte) line_xdyi::y#5
+(byte) line_xdyi::y#6
 (byte) line_xdyi::yd
 (byte) line_xdyi::yd#0
+(byte) line_xdyi::yd#1
+(byte) line_xdyi::yd#2
+(void()) line_ydxd((byte) line_ydxd::y , (byte) line_ydxd::x , (byte) line_ydxd::y1 , (byte) line_ydxd::yd , (byte) line_ydxd::xd)
+(byte~) line_ydxd::$8
+(label) line_ydxd::@1
+(label) line_ydxd::@2
+(label) line_ydxd::@3
+(label) line_ydxd::@5
+(label) line_ydxd::@return
+(byte) line_ydxd::e
+(byte) line_ydxd::e#0
+(byte) line_ydxd::e#1
+(byte) line_ydxd::e#2
+(byte) line_ydxd::e#3
+(byte) line_ydxd::e#6
+(byte) line_ydxd::x
+(byte) line_ydxd::x#0
+(byte) line_ydxd::x#1
+(byte) line_ydxd::x#2
+(byte) line_ydxd::x#3
+(byte) line_ydxd::x#5
+(byte) line_ydxd::x#6
+(byte) line_ydxd::xd
+(byte) line_ydxd::xd#0
+(byte) line_ydxd::xd#1
+(byte) line_ydxd::xd#2
+(byte) line_ydxd::y
+(byte) line_ydxd::y#0
+(byte) line_ydxd::y#1
+(byte) line_ydxd::y#2
+(byte) line_ydxd::y#3
+(byte) line_ydxd::y#6
+(byte) line_ydxd::y1
+(byte) line_ydxd::y1#0
+(byte) line_ydxd::y1#1
+(byte) line_ydxd::y1#6
+(byte) line_ydxd::yd
+(byte) line_ydxd::yd#0
+(byte) line_ydxd::yd#1
+(byte) line_ydxd::yd#5
+(void()) line_ydxi((byte) line_ydxi::y , (byte) line_ydxi::x , (byte) line_ydxi::y1 , (byte) line_ydxi::yd , (byte) line_ydxi::xd)
+(byte~) line_ydxi::$8
+(label) line_ydxi::@1
+(label) line_ydxi::@2
+(label) line_ydxi::@3
+(label) line_ydxi::@5
+(label) line_ydxi::@return
+(byte) line_ydxi::e
+(byte) line_ydxi::e#0
+(byte) line_ydxi::e#1
+(byte) line_ydxi::e#2
+(byte) line_ydxi::e#3
+(byte) line_ydxi::e#6
+(byte) line_ydxi::x
+(byte) line_ydxi::x#0
+(byte) line_ydxi::x#1
+(byte) line_ydxi::x#2
+(byte) line_ydxi::x#3
+(byte) line_ydxi::x#5
+(byte) line_ydxi::x#6
+(byte) line_ydxi::xd
+(byte) line_ydxi::xd#0
+(byte) line_ydxi::xd#1
+(byte) line_ydxi::xd#2
+(byte) line_ydxi::y
+(byte) line_ydxi::y#0
+(byte) line_ydxi::y#1
+(byte) line_ydxi::y#2
+(byte) line_ydxi::y#3
+(byte) line_ydxi::y#6
+(byte) line_ydxi::y1
+(byte) line_ydxi::y1#0
+(byte) line_ydxi::y1#1
+(byte) line_ydxi::y1#6
+(byte) line_ydxi::yd
+(byte) line_ydxi::yd#0
+(byte) line_ydxi::yd#1
+(byte) line_ydxi::yd#5
 (void()) lines()
 (byte~) lines::$0
 (byte~) lines::$2
@@ -8694,22 +13449,12 @@ FINAL SYMBOL TABLE
 (byte) plot::x#2
 (byte) plot::x#3
 (byte) plot::x#4
-(byte) plot::x#5
-(byte) plot::x#6
-(byte) plot::x#7
-(byte) plot::x#8
-(byte) plot::x#9
 (byte) plot::y
 (byte) plot::y#0
 (byte) plot::y#1
 (byte) plot::y#2
 (byte) plot::y#3
 (byte) plot::y#4
-(byte) plot::y#5
-(byte) plot::y#6
-(byte) plot::y#7
-(byte) plot::y#8
-(byte) plot::y#9
 (byte[]) plot_bit
 (const byte[]) plot_bit#0 = (word) 5120
 (byte[]) plot_xhi
@@ -8721,25 +13466,31 @@ FINAL SYMBOL TABLE
 (byte[]) plot_ylo
 (const byte[]) plot_ylo#0 = (word) 4608
 
-Block Sequence Planned @begin @7 @end main main::@3 main::@1 main::@5 main::@return lines lines::@1 lines::@3 lines::@return line line::@9 line::@10 line::@11 line::@return line::@3 line::@19 line::@2 line::@17 line::@1 line::@15 line::@24 line::@7 line::@22 plot plot::@return line_xdyi line_xdyi::@1 line_xdyi::@5 line_xdyi::@3 line_xdyi::@2 line_xdyi::@return init_plot_tables init_plot_tables::@1 init_plot_tables::@5 init_plot_tables::@2 init_plot_tables::@3 init_plot_tables::@7 init_plot_tables::@4 init_plot_tables::@return init_screen init_screen::@1 init_screen::@2 init_screen::@return 
+Block Sequence Planned @begin @10 @end main main::@3 main::@1 main::@5 main::@return lines lines::@1 lines::@3 lines::@return line line::@15 line::@16 line::@17 line::@return line::@3 line::@2 line::@20 line::@6 line::@1 line::@23 line::@24 line::@10 line::@9 line::@27 line::@13 line_ydxi line_ydxi::@1 line_ydxi::@5 line_ydxi::@3 line_ydxi::@2 line_ydxi::@return plot plot::@return line_xdyi line_xdyi::@1 line_xdyi::@5 line_xdyi::@3 line_xdyi::@2 line_xdyi::@return line_ydxd line_ydxd::@1 line_ydxd::@5 line_ydxd::@3 line_ydxd::@2 line_ydxd::@return line_xdyd line_xdyd::@1 line_xdyd::@5 line_xdyd::@3 line_xdyd::@2 line_xdyd::@return init_plot_tables init_plot_tables::@1 init_plot_tables::@5 init_plot_tables::@2 init_plot_tables::@3 init_plot_tables::@7 init_plot_tables::@4 init_plot_tables::@return init_screen init_screen::@1 init_screen::@2 init_screen::@return 
 Added new block during phi lifting lines::@4(between lines::@3 and lines::@1)
+Added new block during phi lifting line_ydxi::@6(between line_ydxi::@2 and line_ydxi::@1)
+Added new block during phi lifting line_ydxi::@7(between line_ydxi::@5 and line_ydxi::@2)
 Added new block during phi lifting line_xdyi::@6(between line_xdyi::@2 and line_xdyi::@1)
 Added new block during phi lifting line_xdyi::@7(between line_xdyi::@5 and line_xdyi::@2)
+Added new block during phi lifting line_ydxd::@6(between line_ydxd::@2 and line_ydxd::@1)
+Added new block during phi lifting line_ydxd::@7(between line_ydxd::@5 and line_ydxd::@2)
+Added new block during phi lifting line_xdyd::@6(between line_xdyd::@2 and line_xdyd::@1)
+Added new block during phi lifting line_xdyd::@7(between line_xdyd::@5 and line_xdyd::@2)
 Added new block during phi lifting init_plot_tables::@9(between init_plot_tables::@2 and init_plot_tables::@1)
 Added new block during phi lifting init_plot_tables::@10(between init_plot_tables::@1 and init_plot_tables::@2)
 Added new block during phi lifting init_plot_tables::@11(between init_plot_tables::@4 and init_plot_tables::@3)
 Added new block during phi lifting init_plot_tables::@12(between init_plot_tables::@3 and init_plot_tables::@4)
 Added new block during phi lifting init_screen::@5(between init_screen::@1 and init_screen::@1)
 Added new block during phi lifting init_screen::@6(between init_screen::@2 and init_screen::@2)
-Block Sequence Planned @begin @7 @end main main::@3 main::@1 main::@5 main::@return lines lines::@1 lines::@3 lines::@return lines::@4 line line::@9 line::@10 line::@11 line::@return line::@3 line::@19 line::@2 line::@17 line::@1 line::@15 line::@24 line::@7 line::@22 plot plot::@return line_xdyi line_xdyi::@1 line_xdyi::@5 line_xdyi::@3 line_xdyi::@2 line_xdyi::@return line_xdyi::@6 line_xdyi::@7 init_plot_tables init_plot_tables::@1 init_plot_tables::@5 init_plot_tables::@2 init_plot_tables::@3 init_plot_tables::@7 init_plot_tables::@4 init_plot_tables::@return init_plot_tables::@11 init_plot_tables::@12 init_plot_tables::@9 init_plot_tables::@10 init_screen init_screen::@1 init_screen::@2 init_screen::@return init_screen::@6 init_screen::@5 
+Block Sequence Planned @begin @10 @end main main::@3 main::@1 main::@5 main::@return lines lines::@1 lines::@3 lines::@return lines::@4 line line::@15 line::@16 line::@17 line::@return line::@3 line::@2 line::@20 line::@6 line::@1 line::@23 line::@24 line::@10 line::@9 line::@27 line::@13 line_ydxi line_ydxi::@1 line_ydxi::@5 line_ydxi::@3 line_ydxi::@2 line_ydxi::@return line_ydxi::@6 line_ydxi::@7 plot plot::@return line_xdyi line_xdyi::@1 line_xdyi::@5 line_xdyi::@3 line_xdyi::@2 line_xdyi::@return line_xdyi::@6 line_xdyi::@7 line_ydxd line_ydxd::@1 line_ydxd::@5 line_ydxd::@3 line_ydxd::@2 line_ydxd::@return line_ydxd::@6 line_ydxd::@7 line_xdyd line_xdyd::@1 line_xdyd::@5 line_xdyd::@3 line_xdyd::@2 line_xdyd::@return line_xdyd::@6 line_xdyd::@7 init_plot_tables init_plot_tables::@1 init_plot_tables::@5 init_plot_tables::@2 init_plot_tables::@3 init_plot_tables::@7 init_plot_tables::@4 init_plot_tables::@return init_plot_tables::@11 init_plot_tables::@12 init_plot_tables::@9 init_plot_tables::@10 init_screen init_screen::@1 init_screen::@2 init_screen::@return init_screen::@6 init_screen::@5 
 CONTROL FLOW GRAPH - PHI LIFTED
 @begin: scope:[]  from
-  to:@7
-@7: scope:[]  from @begin
+  to:@10
+@10: scope:[]  from @begin
   call main param-assignment
   to:@end
-@end: scope:[]  from @7
-main: scope:[main]  from @7
+@end: scope:[]  from @10
+main: scope:[main]  from @10
   *((const byte*) BGCOL#0) ← (byte) 0
   *((const byte*) FGCOL#0) ← (byte) 0
   *((const byte*) D011#0) ← (const byte) BMM#0|(const byte) DEN#0|(const byte) RSEL#0|(byte) 3
@@ -8784,151 +13535,358 @@ lines::@4: scope:[lines]  from lines::@3
   to:lines::@1
 line: scope:[line]  from lines::@1
   if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1
-  to:line::@9
-line::@9: scope:[line]  from line
+  to:line::@15
+line::@15: scope:[line]  from line
   (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0
   if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2
-  to:line::@10
-line::@10: scope:[line]  from line::@9
-  (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0
-  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3
-  to:line::@11
-line::@11: scope:[line]  from line::@10
+  to:line::@16
+line::@16: scope:[line]  from line::@15
+  (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3
+  to:line::@17
+line::@17: scope:[line]  from line::@16
   (byte) line_xdyi::x#0 ← (byte) line::x0#0
   (byte) line_xdyi::y#0 ← (byte) line::y0#0
   (byte) line_xdyi::x1#0 ← (byte) line::x1#0
   (byte) line_xdyi::xd#0 ← (byte) line::xd#1
-  (byte) line_xdyi::yd#0 ← (byte) line::yd#0
+  (byte) line_xdyi::yd#0 ← (byte) line::yd#1
+  (byte~) line_xdyi::yd#7 ← (byte) line_xdyi::yd#0
+  (byte~) line_xdyi::x#8 ← (byte) line_xdyi::x#0
+  (byte~) line_xdyi::y#8 ← (byte) line_xdyi::y#0
+  (byte~) line_xdyi::xd#7 ← (byte) line_xdyi::xd#0
+  (byte~) line_xdyi::x1#7 ← (byte) line_xdyi::x1#0
   call line_xdyi param-assignment
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   return 
   to:@return
-line::@3: scope:[line]  from line::@10
-  (byte) plot::x#2 ← (byte) line::x0#0
-  (byte) plot::y#2 ← (byte) line::y0#0
-  (byte~) plot::x#16 ← (byte) plot::x#2
-  (byte~) plot::y#16 ← (byte) plot::y#2
-  call plot param-assignment
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  (byte) plot::x#3 ← (byte) line::x1#0
-  (byte) plot::y#3 ← (byte) line::y1#0
-  (byte~) plot::x#12 ← (byte) plot::x#3
-  (byte~) plot::y#12 ← (byte) plot::y#3
-  call plot param-assignment
+line::@3: scope:[line]  from line::@16
+  (byte) line_ydxi::y#0 ← (byte) line::y0#0
+  (byte) line_ydxi::x#0 ← (byte) line::x0#0
+  (byte) line_ydxi::y1#0 ← (byte) line::y1#0
+  (byte) line_ydxi::yd#0 ← (byte) line::yd#1
+  (byte) line_ydxi::xd#0 ← (byte) line::xd#1
+  (byte~) line_ydxi::xd#8 ← (byte) line_ydxi::xd#0
+  (byte~) line_ydxi::x#9 ← (byte) line_ydxi::x#0
+  (byte~) line_ydxi::y#9 ← (byte) line_ydxi::y#0
+  (byte~) line_ydxi::yd#8 ← (byte) line_ydxi::yd#0
+  (byte~) line_ydxi::y1#8 ← (byte) line_ydxi::y1#0
+  call line_ydxi param-assignment
   to:line::@return
-line::@2: scope:[line]  from line::@9
-  (byte) plot::x#0 ← (byte) line::x0#0
-  (byte) plot::y#0 ← (byte) line::y0#0
-  (byte~) plot::x#13 ← (byte) plot::x#0
-  (byte~) plot::y#13 ← (byte) plot::y#0
-  call plot param-assignment
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  (byte) plot::x#1 ← (byte) line::x1#0
-  (byte) plot::y#1 ← (byte) line::y1#0
-  (byte~) plot::x#11 ← (byte) plot::x#1
-  (byte~) plot::y#11 ← (byte) plot::y#1
-  call plot param-assignment
+line::@2: scope:[line]  from line::@15
+  (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6
+  to:line::@20
+line::@20: scope:[line]  from line::@2
+  (byte) line_xdyd::x#0 ← (byte) line::x0#0
+  (byte) line_xdyd::y#0 ← (byte) line::y0#0
+  (byte) line_xdyd::x1#0 ← (byte) line::x1#0
+  (byte) line_xdyd::xd#0 ← (byte) line::xd#1
+  (byte) line_xdyd::yd#0 ← (byte) line::yd#0
+  (byte~) line_xdyd::yd#7 ← (byte) line_xdyd::yd#0
+  (byte~) line_xdyd::x#8 ← (byte) line_xdyd::x#0
+  (byte~) line_xdyd::y#8 ← (byte) line_xdyd::y#0
+  (byte~) line_xdyd::xd#7 ← (byte) line_xdyd::xd#0
+  (byte~) line_xdyd::x1#7 ← (byte) line_xdyd::x1#0
+  call line_xdyd param-assignment
+  to:line::@return
+line::@6: scope:[line]  from line::@2
+  (byte) line_ydxd::y#0 ← (byte) line::y1#0
+  (byte) line_ydxd::x#0 ← (byte) line::x1#0
+  (byte) line_ydxd::y1#0 ← (byte) line::y0#0
+  (byte) line_ydxd::yd#0 ← (byte) line::yd#0
+  (byte) line_ydxd::xd#0 ← (byte) line::xd#1
+  (byte~) line_ydxd::xd#8 ← (byte) line_ydxd::xd#0
+  (byte~) line_ydxd::x#9 ← (byte) line_ydxd::x#0
+  (byte~) line_ydxd::y#9 ← (byte) line_ydxd::y#0
+  (byte~) line_ydxd::yd#8 ← (byte) line_ydxd::yd#0
+  (byte~) line_ydxd::y1#8 ← (byte) line_ydxd::y1#0
+  call line_ydxd param-assignment
   to:line::@return
 line::@1: scope:[line]  from line
-  (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0
-  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7
-  to:line::@15
-line::@15: scope:[line]  from line::@1
-  (byte) plot::x#6 ← (byte) line::x0#0
-  (byte) plot::y#6 ← (byte) line::y0#0
-  (byte~) plot::x#10 ← (byte) plot::x#6
-  (byte~) plot::y#10 ← (byte) plot::y#6
-  call plot param-assignment
+  (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0
+  if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9
+  to:line::@23
+line::@23: scope:[line]  from line::@1
+  (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0
+  if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  (byte) plot::x#7 ← (byte) line::x1#0
-  (byte) plot::y#7 ← (byte) line::y1#0
-  (byte~) plot::x#15 ← (byte) plot::x#7
-  (byte~) plot::y#15 ← (byte) plot::y#7
-  call plot param-assignment
+line::@24: scope:[line]  from line::@23
+  (byte) line_xdyd::x#1 ← (byte) line::x1#0
+  (byte) line_xdyd::y#1 ← (byte) line::y1#0
+  (byte) line_xdyd::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyd::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyd::yd#1 ← (byte) line::yd#3
+  (byte~) line_xdyd::yd#8 ← (byte) line_xdyd::yd#1
+  (byte~) line_xdyd::x#9 ← (byte) line_xdyd::x#1
+  (byte~) line_xdyd::y#9 ← (byte) line_xdyd::y#1
+  (byte~) line_xdyd::xd#8 ← (byte) line_xdyd::xd#1
+  (byte~) line_xdyd::x1#8 ← (byte) line_xdyd::x1#1
+  call line_xdyd param-assignment
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  (byte) plot::x#4 ← (byte) line::x0#0
-  (byte) plot::y#4 ← (byte) line::y0#0
-  (byte~) plot::x#17 ← (byte) plot::x#4
-  (byte~) plot::y#17 ← (byte) plot::y#4
-  call plot param-assignment
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  (byte) plot::x#5 ← (byte) line::x1#0
-  (byte) plot::y#5 ← (byte) line::y1#0
-  (byte~) plot::x#14 ← (byte) plot::x#5
-  (byte~) plot::y#14 ← (byte) plot::y#5
-  call plot param-assignment
+line::@10: scope:[line]  from line::@23
+  (byte) line_ydxd::y#1 ← (byte) line::y0#0
+  (byte) line_ydxd::x#1 ← (byte) line::x0#0
+  (byte) line_ydxd::y1#1 ← (byte) line::y1#0
+  (byte) line_ydxd::yd#1 ← (byte) line::yd#3
+  (byte) line_ydxd::xd#1 ← (byte) line::xd#0
+  (byte~) line_ydxd::xd#7 ← (byte) line_ydxd::xd#1
+  (byte~) line_ydxd::x#8 ← (byte) line_ydxd::x#1
+  (byte~) line_ydxd::y#8 ← (byte) line_ydxd::y#1
+  (byte~) line_ydxd::yd#7 ← (byte) line_ydxd::yd#1
+  (byte~) line_ydxd::y1#7 ← (byte) line_ydxd::y1#1
+  call line_ydxd param-assignment
   to:line::@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  (byte) plot::y#9 ← phi( line::@15/(byte~) plot::y#10 line::@17/(byte~) plot::y#11 line::@19/(byte~) plot::y#12 line::@2/(byte~) plot::y#13 line::@22/(byte~) plot::y#14 line::@24/(byte~) plot::y#15 line::@3/(byte~) plot::y#16 line::@7/(byte~) plot::y#17 line_xdyi::@1/(byte~) plot::y#18 )
-  (byte) plot::x#9 ← phi( line::@15/(byte~) plot::x#10 line::@17/(byte~) plot::x#11 line::@19/(byte~) plot::x#12 line::@2/(byte~) plot::x#13 line::@22/(byte~) plot::x#14 line::@24/(byte~) plot::x#15 line::@3/(byte~) plot::x#16 line::@7/(byte~) plot::x#17 line_xdyi::@1/(byte~) plot::x#18 )
-  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9
+line::@9: scope:[line]  from line::@1
+  (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0
+  if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13
+  to:line::@27
+line::@27: scope:[line]  from line::@9
+  (byte) line_xdyi::x#1 ← (byte) line::x1#0
+  (byte) line_xdyi::y#1 ← (byte) line::y1#0
+  (byte) line_xdyi::x1#1 ← (byte) line::x0#0
+  (byte) line_xdyi::xd#1 ← (byte) line::xd#0
+  (byte) line_xdyi::yd#1 ← (byte) line::yd#10
+  (byte~) line_xdyi::yd#8 ← (byte) line_xdyi::yd#1
+  (byte~) line_xdyi::x#9 ← (byte) line_xdyi::x#1
+  (byte~) line_xdyi::y#9 ← (byte) line_xdyi::y#1
+  (byte~) line_xdyi::xd#8 ← (byte) line_xdyi::xd#1
+  (byte~) line_xdyi::x1#8 ← (byte) line_xdyi::x1#1
+  call line_xdyi param-assignment
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  (byte) line_ydxi::y#1 ← (byte) line::y1#0
+  (byte) line_ydxi::x#1 ← (byte) line::x1#0
+  (byte) line_ydxi::y1#1 ← (byte) line::y0#0
+  (byte) line_ydxi::yd#1 ← (byte) line::yd#10
+  (byte) line_ydxi::xd#1 ← (byte) line::xd#0
+  (byte~) line_ydxi::xd#7 ← (byte) line_ydxi::xd#1
+  (byte~) line_ydxi::x#8 ← (byte) line_ydxi::x#1
+  (byte~) line_ydxi::y#8 ← (byte) line_ydxi::y#1
+  (byte~) line_ydxi::yd#7 ← (byte) line_ydxi::yd#1
+  (byte~) line_ydxi::y1#7 ← (byte) line_ydxi::y1#1
+  call line_ydxi param-assignment
+  to:line::@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  (byte) line_ydxi::y1#6 ← phi( line::@13/(byte~) line_ydxi::y1#7 line::@3/(byte~) line_ydxi::y1#8 )
+  (byte) line_ydxi::yd#5 ← phi( line::@13/(byte~) line_ydxi::yd#7 line::@3/(byte~) line_ydxi::yd#8 )
+  (byte) line_ydxi::y#6 ← phi( line::@13/(byte~) line_ydxi::y#8 line::@3/(byte~) line_ydxi::y#9 )
+  (byte) line_ydxi::x#5 ← phi( line::@13/(byte~) line_ydxi::x#8 line::@3/(byte~) line_ydxi::x#9 )
+  (byte) line_ydxi::xd#2 ← phi( line::@13/(byte~) line_ydxi::xd#7 line::@3/(byte~) line_ydxi::xd#8 )
+  (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1
+  (byte~) line_ydxi::x#10 ← (byte) line_ydxi::x#5
+  (byte~) line_ydxi::y#10 ← (byte) line_ydxi::y#6
+  (byte~) line_ydxi::e#7 ← (byte) line_ydxi::e#0
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@6
+  (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte~) line_ydxi::e#7 line_ydxi::@6/(byte~) line_ydxi::e#8 )
+  (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte~) line_ydxi::y#10 line_ydxi::@6/(byte~) line_ydxi::y#11 )
+  (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte~) line_ydxi::x#10 line_ydxi::@6/(byte~) line_ydxi::x#11 )
+  (byte) plot::x#2 ← (byte) line_ydxi::x#3
+  (byte) plot::y#2 ← (byte) line_ydxi::y#3
+  (byte~) plot::x#8 ← (byte) plot::x#2
+  (byte~) plot::y#8 ← (byte) plot::y#2
+  call plot param-assignment
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1
+  (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2
+  if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@7
+  to:line_ydxi::@3
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1
+  (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5
+  (byte~) line_ydxi::x#12 ← (byte) line_ydxi::x#2
+  (byte~) line_ydxi::e#9 ← (byte) line_ydxi::e#2
+  to:line_ydxi::@2
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@7
+  (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte~) line_ydxi::e#9 line_ydxi::@7/(byte~) line_ydxi::e#10 )
+  (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte~) line_ydxi::x#12 line_ydxi::@7/(byte~) line_ydxi::x#13 )
+  (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1
+  if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@6
+  to:line_ydxi::@return
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  return 
+  to:@return
+line_ydxi::@6: scope:[line_ydxi]  from line_ydxi::@2
+  (byte~) line_ydxi::x#11 ← (byte) line_ydxi::x#6
+  (byte~) line_ydxi::y#11 ← (byte) line_ydxi::y#2
+  (byte~) line_ydxi::e#8 ← (byte) line_ydxi::e#6
+  to:line_ydxi::@1
+line_ydxi::@7: scope:[line_ydxi]  from line_ydxi::@5
+  (byte~) line_ydxi::x#13 ← (byte) line_ydxi::x#3
+  (byte~) line_ydxi::e#10 ← (byte) line_ydxi::e#1
+  to:line_ydxi::@2
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  (byte) plot::y#4 ← phi( line_xdyd::@1/(byte~) plot::y#5 line_xdyi::@1/(byte~) plot::y#6 line_ydxd::@1/(byte~) plot::y#7 line_ydxi::@1/(byte~) plot::y#8 )
+  (byte) plot::x#4 ← phi( line_xdyd::@1/(byte~) plot::x#5 line_xdyi::@1/(byte~) plot::x#6 line_ydxd::@1/(byte~) plot::x#7 line_ydxi::@1/(byte~) plot::x#8 )
+  (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0
-  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9
+  (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4
   (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1
-  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9
+  (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2
-  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9
+  (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4
   (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3
   (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2
   (byte~) plot::$5 ← * (byte*) plot::plotter#0
-  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9
+  (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4
   (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6
   *((byte*) plot::plotter#0) ← (byte~) plot::$7
   to:plot::@return
 plot::@return: scope:[plot]  from plot
   return 
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1
-  (byte~) line_xdyi::x#7 ← (byte) line_xdyi::x#0
-  (byte~) line_xdyi::y#7 ← (byte) line_xdyi::y#0
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  (byte) line_xdyi::x1#6 ← phi( line::@17/(byte~) line_xdyi::x1#7 line::@27/(byte~) line_xdyi::x1#8 )
+  (byte) line_xdyi::xd#5 ← phi( line::@17/(byte~) line_xdyi::xd#7 line::@27/(byte~) line_xdyi::xd#8 )
+  (byte) line_xdyi::y#5 ← phi( line::@17/(byte~) line_xdyi::y#8 line::@27/(byte~) line_xdyi::y#9 )
+  (byte) line_xdyi::x#6 ← phi( line::@17/(byte~) line_xdyi::x#8 line::@27/(byte~) line_xdyi::x#9 )
+  (byte) line_xdyi::yd#2 ← phi( line::@17/(byte~) line_xdyi::yd#7 line::@27/(byte~) line_xdyi::yd#8 )
+  (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1
+  (byte~) line_xdyi::x#10 ← (byte) line_xdyi::x#6
+  (byte~) line_xdyi::y#10 ← (byte) line_xdyi::y#5
   (byte~) line_xdyi::e#7 ← (byte) line_xdyi::e#0
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@6
   (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte~) line_xdyi::e#7 line_xdyi::@6/(byte~) line_xdyi::e#8 )
-  (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte~) line_xdyi::y#7 line_xdyi::@6/(byte~) line_xdyi::y#8 )
-  (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte~) line_xdyi::x#7 line_xdyi::@6/(byte~) line_xdyi::x#8 )
-  (byte) plot::x#8 ← (byte) line_xdyi::x#2
-  (byte) plot::y#8 ← (byte) line_xdyi::y#2
-  (byte~) plot::x#18 ← (byte) plot::x#8
-  (byte~) plot::y#18 ← (byte) plot::y#8
+  (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte~) line_xdyi::y#10 line_xdyi::@6/(byte~) line_xdyi::y#11 )
+  (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte~) line_xdyi::x#10 line_xdyi::@6/(byte~) line_xdyi::x#11 )
+  (byte) plot::x#0 ← (byte) line_xdyi::x#3
+  (byte) plot::y#0 ← (byte) line_xdyi::y#3
+  (byte~) plot::x#6 ← (byte) plot::x#0
+  (byte~) plot::y#6 ← (byte) plot::y#0
   call plot param-assignment
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1
-  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0
-  if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@7
+  (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1
+  (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2
+  if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@7
   to:line_xdyi::@3
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1
-  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0
-  (byte~) line_xdyi::y#9 ← (byte) line_xdyi::y#1
+  (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1
+  (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5
+  (byte~) line_xdyi::y#12 ← (byte) line_xdyi::y#2
   (byte~) line_xdyi::e#9 ← (byte) line_xdyi::e#2
   to:line_xdyi::@2
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@7
   (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte~) line_xdyi::e#9 line_xdyi::@7/(byte~) line_xdyi::e#10 )
-  (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte~) line_xdyi::y#9 line_xdyi::@7/(byte~) line_xdyi::y#10 )
-  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1
-  if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@6
+  (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte~) line_xdyi::y#12 line_xdyi::@7/(byte~) line_xdyi::y#13 )
+  (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1
+  if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@6
   to:line_xdyi::@return
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
   return 
   to:@return
 line_xdyi::@6: scope:[line_xdyi]  from line_xdyi::@2
-  (byte~) line_xdyi::x#8 ← (byte) line_xdyi::x#1
-  (byte~) line_xdyi::y#8 ← (byte) line_xdyi::y#5
+  (byte~) line_xdyi::x#11 ← (byte) line_xdyi::x#2
+  (byte~) line_xdyi::y#11 ← (byte) line_xdyi::y#6
   (byte~) line_xdyi::e#8 ← (byte) line_xdyi::e#6
   to:line_xdyi::@1
 line_xdyi::@7: scope:[line_xdyi]  from line_xdyi::@5
-  (byte~) line_xdyi::y#10 ← (byte) line_xdyi::y#2
+  (byte~) line_xdyi::y#13 ← (byte) line_xdyi::y#3
   (byte~) line_xdyi::e#10 ← (byte) line_xdyi::e#1
   to:line_xdyi::@2
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  (byte) line_ydxd::y1#6 ← phi( line::@10/(byte~) line_ydxd::y1#7 line::@6/(byte~) line_ydxd::y1#8 )
+  (byte) line_ydxd::yd#5 ← phi( line::@10/(byte~) line_ydxd::yd#7 line::@6/(byte~) line_ydxd::yd#8 )
+  (byte) line_ydxd::y#6 ← phi( line::@10/(byte~) line_ydxd::y#8 line::@6/(byte~) line_ydxd::y#9 )
+  (byte) line_ydxd::x#5 ← phi( line::@10/(byte~) line_ydxd::x#8 line::@6/(byte~) line_ydxd::x#9 )
+  (byte) line_ydxd::xd#2 ← phi( line::@10/(byte~) line_ydxd::xd#7 line::@6/(byte~) line_ydxd::xd#8 )
+  (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1
+  (byte~) line_ydxd::x#10 ← (byte) line_ydxd::x#5
+  (byte~) line_ydxd::y#10 ← (byte) line_ydxd::y#6
+  (byte~) line_ydxd::e#7 ← (byte) line_ydxd::e#0
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@6
+  (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte~) line_ydxd::e#7 line_ydxd::@6/(byte~) line_ydxd::e#8 )
+  (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte~) line_ydxd::y#10 line_ydxd::@6/(byte~) line_ydxd::y#11 )
+  (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte~) line_ydxd::x#10 line_ydxd::@6/(byte~) line_ydxd::x#11 )
+  (byte) plot::x#3 ← (byte) line_ydxd::x#3
+  (byte) plot::y#3 ← (byte) line_ydxd::y#3
+  (byte~) plot::x#7 ← (byte) plot::x#3
+  (byte~) plot::y#7 ← (byte) plot::y#3
+  call plot param-assignment
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1
+  (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2
+  if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@7
+  to:line_ydxd::@3
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1
+  (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5
+  (byte~) line_ydxd::x#12 ← (byte) line_ydxd::x#2
+  (byte~) line_ydxd::e#9 ← (byte) line_ydxd::e#2
+  to:line_ydxd::@2
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@7
+  (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte~) line_ydxd::e#9 line_ydxd::@7/(byte~) line_ydxd::e#10 )
+  (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte~) line_ydxd::x#12 line_ydxd::@7/(byte~) line_ydxd::x#13 )
+  (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1
+  if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@6
+  to:line_ydxd::@return
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  return 
+  to:@return
+line_ydxd::@6: scope:[line_ydxd]  from line_ydxd::@2
+  (byte~) line_ydxd::x#11 ← (byte) line_ydxd::x#6
+  (byte~) line_ydxd::y#11 ← (byte) line_ydxd::y#2
+  (byte~) line_ydxd::e#8 ← (byte) line_ydxd::e#6
+  to:line_ydxd::@1
+line_ydxd::@7: scope:[line_ydxd]  from line_ydxd::@5
+  (byte~) line_ydxd::x#13 ← (byte) line_ydxd::x#3
+  (byte~) line_ydxd::e#10 ← (byte) line_ydxd::e#1
+  to:line_ydxd::@2
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  (byte) line_xdyd::x1#6 ← phi( line::@20/(byte~) line_xdyd::x1#7 line::@24/(byte~) line_xdyd::x1#8 )
+  (byte) line_xdyd::xd#5 ← phi( line::@20/(byte~) line_xdyd::xd#7 line::@24/(byte~) line_xdyd::xd#8 )
+  (byte) line_xdyd::y#5 ← phi( line::@20/(byte~) line_xdyd::y#8 line::@24/(byte~) line_xdyd::y#9 )
+  (byte) line_xdyd::x#6 ← phi( line::@20/(byte~) line_xdyd::x#8 line::@24/(byte~) line_xdyd::x#9 )
+  (byte) line_xdyd::yd#2 ← phi( line::@20/(byte~) line_xdyd::yd#7 line::@24/(byte~) line_xdyd::yd#8 )
+  (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1
+  (byte~) line_xdyd::x#10 ← (byte) line_xdyd::x#6
+  (byte~) line_xdyd::y#10 ← (byte) line_xdyd::y#5
+  (byte~) line_xdyd::e#7 ← (byte) line_xdyd::e#0
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@6
+  (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte~) line_xdyd::e#7 line_xdyd::@6/(byte~) line_xdyd::e#8 )
+  (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte~) line_xdyd::y#10 line_xdyd::@6/(byte~) line_xdyd::y#11 )
+  (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte~) line_xdyd::x#10 line_xdyd::@6/(byte~) line_xdyd::x#11 )
+  (byte) plot::x#1 ← (byte) line_xdyd::x#3
+  (byte) plot::y#1 ← (byte) line_xdyd::y#3
+  (byte~) plot::x#5 ← (byte) plot::x#1
+  (byte~) plot::y#5 ← (byte) plot::y#1
+  call plot param-assignment
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1
+  (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2
+  if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@7
+  to:line_xdyd::@3
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1
+  (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5
+  (byte~) line_xdyd::y#12 ← (byte) line_xdyd::y#2
+  (byte~) line_xdyd::e#9 ← (byte) line_xdyd::e#2
+  to:line_xdyd::@2
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@7
+  (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte~) line_xdyd::e#9 line_xdyd::@7/(byte~) line_xdyd::e#10 )
+  (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte~) line_xdyd::y#12 line_xdyd::@7/(byte~) line_xdyd::y#13 )
+  (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1
+  if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@6
+  to:line_xdyd::@return
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  return 
+  to:@return
+line_xdyd::@6: scope:[line_xdyd]  from line_xdyd::@2
+  (byte~) line_xdyd::x#11 ← (byte) line_xdyd::x#2
+  (byte~) line_xdyd::y#11 ← (byte) line_xdyd::y#6
+  (byte~) line_xdyd::e#8 ← (byte) line_xdyd::e#6
+  to:line_xdyd::@1
+line_xdyd::@7: scope:[line_xdyd]  from line_xdyd::@5
+  (byte~) line_xdyd::y#13 ← (byte) line_xdyd::y#3
+  (byte~) line_xdyd::e#10 ← (byte) line_xdyd::e#1
+  to:line_xdyd::@2
 init_plot_tables: scope:[init_plot_tables]  from main::@3
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@9
@@ -9017,8 +13975,11 @@ CALL GRAPH
 Calls in [] to 0:main 
 Calls in [main] to 5:init_screen 6:init_plot_tables 7:lines 
 Calls in [lines] to 20:line 
-Calls in [line] to 35:line_xdyi 41:plot 46:plot 51:plot 56:plot 63:plot 68:plot 73:plot 78:plot 
-Calls in [line_xdyi] to 103:plot 
+Calls in [line] to 40:line_xdyi 52:line_ydxi 65:line_xdyd 76:line_ydxd 91:line_xdyd 102:line_ydxd 115:line_xdyi 126:line_ydxi 
+Calls in [line_ydxi] to 137:plot 
+Calls in [line_xdyi] to 179:plot 
+Calls in [line_ydxd] to 206:plot 
+Calls in [line_xdyd] to 233:plot 
 
 Propagating live ranges...
 Propagating live ranges...
@@ -9037,16 +13998,14 @@ Propagating live ranges...
 Propagating live ranges...
 Propagating live ranges...
 Propagating live ranges...
-Propagating live ranges...
-Propagating live ranges...
 CONTROL FLOW GRAPH - LIVE RANGES FOUND
 @begin: scope:[]  from
-  to:@7
-@7: scope:[]  from @begin
+  to:@10
+@10: scope:[]  from @begin
   [0] call main param-assignment [ ]
   to:@end
-@end: scope:[]  from @7
-main: scope:[main]  from @7
+@end: scope:[]  from @10
+main: scope:[main]  from @10
   [1] *((const byte*) BGCOL#0) ← (byte) 0 [ ]
   [2] *((const byte*) FGCOL#0) ← (byte) 0 [ ]
   [3] *((const byte*) D011#0) ← (const byte) BMM#0|(const byte) DEN#0|(const byte) RSEL#0|(byte) 3 [ ]
@@ -9092,277 +14051,550 @@ lines::@4: scope:[lines]  from lines::@3
   to:lines::@1
 line: scope:[line]  from lines::@1
   [25] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
-  to:line::@9
-line::@9: scope:[line]  from line
+  to:line::@15
+line::@15: scope:[line]  from line
   [26] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ]
   [27] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ]
-  to:line::@10
-line::@10: scope:[line]  from line::@9
-  [28] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
-  [29] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
-  to:line::@11
-line::@11: scope:[line]  from line::@10
-  [30] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyi::x#0 ]
-  [31] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 ]
-  [32] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ]
-  [33] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
-  [34] (byte) line_xdyi::yd#0 ← (byte) line::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ]
-  [35] call line_xdyi param-assignment [ ]
-  to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
-  [36] return  [ ]
-  to:@return
-line::@3: scope:[line]  from line::@10
-  [37] (byte) plot::x#2 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#2 ]
-  [38] (byte) plot::y#2 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#2 plot::y#2 ]
-  [39] (byte~) plot::x#16 ← (byte) plot::x#2 [ line::x1#0 line::y1#0 plot::y#2 plot::x#16 ]
-  [40] (byte~) plot::y#16 ← (byte) plot::y#2 [ line::x1#0 line::y1#0 plot::x#16 plot::y#16 ]
-  [41] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  [42] (byte) plot::x#3 ← (byte) line::x1#0 [ line::y1#0 plot::x#3 ]
-  [43] (byte) plot::y#3 ← (byte) line::y1#0 [ plot::x#3 plot::y#3 ]
-  [44] (byte~) plot::x#12 ← (byte) plot::x#3 [ plot::y#3 plot::x#12 ]
-  [45] (byte~) plot::y#12 ← (byte) plot::y#3 [ plot::x#12 plot::y#12 ]
-  [46] call plot param-assignment [ ]
-  to:line::@return
-line::@2: scope:[line]  from line::@9
-  [47] (byte) plot::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#0 ]
-  [48] (byte) plot::y#0 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#0 plot::y#0 ]
-  [49] (byte~) plot::x#13 ← (byte) plot::x#0 [ line::x1#0 line::y1#0 plot::y#0 plot::x#13 ]
-  [50] (byte~) plot::y#13 ← (byte) plot::y#0 [ line::x1#0 line::y1#0 plot::x#13 plot::y#13 ]
-  [51] call plot param-assignment [ line::x1#0 line::y1#0 ]
+  to:line::@16
+line::@16: scope:[line]  from line::@15
+  [28] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ]
+  [29] if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ]
   to:line::@17
-line::@17: scope:[line]  from line::@2
-  [52] (byte) plot::x#1 ← (byte) line::x1#0 [ line::y1#0 plot::x#1 ]
-  [53] (byte) plot::y#1 ← (byte) line::y1#0 [ plot::x#1 plot::y#1 ]
-  [54] (byte~) plot::x#11 ← (byte) plot::x#1 [ plot::y#1 plot::x#11 ]
-  [55] (byte~) plot::y#11 ← (byte) plot::y#1 [ plot::x#11 plot::y#11 ]
-  [56] call plot param-assignment [ ]
+line::@17: scope:[line]  from line::@16
+  [30] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#1 line_xdyi::x#0 ]
+  [31] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 ]
+  [32] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ]
+  [33] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
+  [34] (byte) line_xdyi::yd#0 ← (byte) line::yd#1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ]
+  [35] (byte~) line_xdyi::yd#7 ← (byte) line_xdyi::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#7 ]
+  [36] (byte~) line_xdyi::x#8 ← (byte) line_xdyi::x#0 [ line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#7 line_xdyi::x#8 ]
+  [37] (byte~) line_xdyi::y#8 ← (byte) line_xdyi::y#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#7 line_xdyi::x#8 line_xdyi::y#8 ]
+  [38] (byte~) line_xdyi::xd#7 ← (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::yd#7 line_xdyi::x#8 line_xdyi::y#8 line_xdyi::xd#7 ]
+  [39] (byte~) line_xdyi::x1#7 ← (byte) line_xdyi::x1#0 [ line_xdyi::yd#7 line_xdyi::x#8 line_xdyi::y#8 line_xdyi::xd#7 line_xdyi::x1#7 ]
+  [40] call line_xdyi param-assignment [ ]
+  to:line::@return
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
+  [41] return  [ ]
+  to:@return
+line::@3: scope:[line]  from line::@16
+  [42] (byte) line_ydxi::y#0 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 ]
+  [43] (byte) line_ydxi::x#0 ← (byte) line::x0#0 [ line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 ]
+  [44] (byte) line_ydxi::y1#0 ← (byte) line::y1#0 [ line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 ]
+  [45] (byte) line_ydxi::yd#0 ← (byte) line::yd#1 [ line::xd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 ]
+  [46] (byte) line_ydxi::xd#0 ← (byte) line::xd#1 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#0 ]
+  [47] (byte~) line_ydxi::xd#8 ← (byte) line_ydxi::xd#0 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#8 ]
+  [48] (byte~) line_ydxi::x#9 ← (byte) line_ydxi::x#0 [ line_ydxi::y#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#8 line_ydxi::x#9 ]
+  [49] (byte~) line_ydxi::y#9 ← (byte) line_ydxi::y#0 [ line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#8 line_ydxi::x#9 line_ydxi::y#9 ]
+  [50] (byte~) line_ydxi::yd#8 ← (byte) line_ydxi::yd#0 [ line_ydxi::y1#0 line_ydxi::xd#8 line_ydxi::x#9 line_ydxi::y#9 line_ydxi::yd#8 ]
+  [51] (byte~) line_ydxi::y1#8 ← (byte) line_ydxi::y1#0 [ line_ydxi::xd#8 line_ydxi::x#9 line_ydxi::y#9 line_ydxi::yd#8 line_ydxi::y1#8 ]
+  [52] call line_ydxi param-assignment [ ]
+  to:line::@return
+line::@2: scope:[line]  from line::@15
+  [53] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
+  [54] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
+  to:line::@20
+line::@20: scope:[line]  from line::@2
+  [55] (byte) line_xdyd::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyd::x#0 ]
+  [56] (byte) line_xdyd::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 ]
+  [57] (byte) line_xdyd::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 ]
+  [58] (byte) line_xdyd::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 ]
+  [59] (byte) line_xdyd::yd#0 ← (byte) line::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#0 ]
+  [60] (byte~) line_xdyd::yd#7 ← (byte) line_xdyd::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#7 ]
+  [61] (byte~) line_xdyd::x#8 ← (byte) line_xdyd::x#0 [ line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#7 line_xdyd::x#8 ]
+  [62] (byte~) line_xdyd::y#8 ← (byte) line_xdyd::y#0 [ line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#7 line_xdyd::x#8 line_xdyd::y#8 ]
+  [63] (byte~) line_xdyd::xd#7 ← (byte) line_xdyd::xd#0 [ line_xdyd::x1#0 line_xdyd::yd#7 line_xdyd::x#8 line_xdyd::y#8 line_xdyd::xd#7 ]
+  [64] (byte~) line_xdyd::x1#7 ← (byte) line_xdyd::x1#0 [ line_xdyd::yd#7 line_xdyd::x#8 line_xdyd::y#8 line_xdyd::xd#7 line_xdyd::x1#7 ]
+  [65] call line_xdyd param-assignment [ ]
+  to:line::@return
+line::@6: scope:[line]  from line::@2
+  [66] (byte) line_ydxd::y#0 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 ]
+  [67] (byte) line_ydxd::x#0 ← (byte) line::x1#0 [ line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 ]
+  [68] (byte) line_ydxd::y1#0 ← (byte) line::y0#0 [ line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 ]
+  [69] (byte) line_ydxd::yd#0 ← (byte) line::yd#0 [ line::xd#1 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 ]
+  [70] (byte) line_ydxd::xd#0 ← (byte) line::xd#1 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#0 ]
+  [71] (byte~) line_ydxd::xd#8 ← (byte) line_ydxd::xd#0 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#8 ]
+  [72] (byte~) line_ydxd::x#9 ← (byte) line_ydxd::x#0 [ line_ydxd::y#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#8 line_ydxd::x#9 ]
+  [73] (byte~) line_ydxd::y#9 ← (byte) line_ydxd::y#0 [ line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#8 line_ydxd::x#9 line_ydxd::y#9 ]
+  [74] (byte~) line_ydxd::yd#8 ← (byte) line_ydxd::yd#0 [ line_ydxd::y1#0 line_ydxd::xd#8 line_ydxd::x#9 line_ydxd::y#9 line_ydxd::yd#8 ]
+  [75] (byte~) line_ydxd::y1#8 ← (byte) line_ydxd::y1#0 [ line_ydxd::xd#8 line_ydxd::x#9 line_ydxd::y#9 line_ydxd::yd#8 line_ydxd::y1#8 ]
+  [76] call line_ydxd param-assignment [ ]
   to:line::@return
 line::@1: scope:[line]  from line
-  [57] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
-  [58] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
-  to:line::@15
-line::@15: scope:[line]  from line::@1
-  [59] (byte) plot::x#6 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#6 ]
-  [60] (byte) plot::y#6 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#6 plot::y#6 ]
-  [61] (byte~) plot::x#10 ← (byte) plot::x#6 [ line::x1#0 line::y1#0 plot::y#6 plot::x#10 ]
-  [62] (byte~) plot::y#10 ← (byte) plot::y#6 [ line::x1#0 line::y1#0 plot::x#10 plot::y#10 ]
-  [63] call plot param-assignment [ line::x1#0 line::y1#0 ]
+  [77] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ]
+  [78] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ]
+  to:line::@23
+line::@23: scope:[line]  from line::@1
+  [79] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ]
+  [80] if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ]
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  [64] (byte) plot::x#7 ← (byte) line::x1#0 [ line::y1#0 plot::x#7 ]
-  [65] (byte) plot::y#7 ← (byte) line::y1#0 [ plot::x#7 plot::y#7 ]
-  [66] (byte~) plot::x#15 ← (byte) plot::x#7 [ plot::y#7 plot::x#15 ]
-  [67] (byte~) plot::y#15 ← (byte) plot::y#7 [ plot::x#15 plot::y#15 ]
-  [68] call plot param-assignment [ ]
+line::@24: scope:[line]  from line::@23
+  [81] (byte) line_xdyd::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_xdyd::x#1 ]
+  [82] (byte) line_xdyd::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 ]
+  [83] (byte) line_xdyd::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 ]
+  [84] (byte) line_xdyd::xd#1 ← (byte) line::xd#0 [ line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 ]
+  [85] (byte) line_xdyd::yd#1 ← (byte) line::yd#3 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#1 ]
+  [86] (byte~) line_xdyd::yd#8 ← (byte) line_xdyd::yd#1 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#8 ]
+  [87] (byte~) line_xdyd::x#9 ← (byte) line_xdyd::x#1 [ line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#8 line_xdyd::x#9 ]
+  [88] (byte~) line_xdyd::y#9 ← (byte) line_xdyd::y#1 [ line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#8 line_xdyd::x#9 line_xdyd::y#9 ]
+  [89] (byte~) line_xdyd::xd#8 ← (byte) line_xdyd::xd#1 [ line_xdyd::x1#1 line_xdyd::yd#8 line_xdyd::x#9 line_xdyd::y#9 line_xdyd::xd#8 ]
+  [90] (byte~) line_xdyd::x1#8 ← (byte) line_xdyd::x1#1 [ line_xdyd::yd#8 line_xdyd::x#9 line_xdyd::y#9 line_xdyd::xd#8 line_xdyd::x1#8 ]
+  [91] call line_xdyd param-assignment [ ]
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  [69] (byte) plot::x#4 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#4 ]
-  [70] (byte) plot::y#4 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#4 plot::y#4 ]
-  [71] (byte~) plot::x#17 ← (byte) plot::x#4 [ line::x1#0 line::y1#0 plot::y#4 plot::x#17 ]
-  [72] (byte~) plot::y#17 ← (byte) plot::y#4 [ line::x1#0 line::y1#0 plot::x#17 plot::y#17 ]
-  [73] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  [74] (byte) plot::x#5 ← (byte) line::x1#0 [ line::y1#0 plot::x#5 ]
-  [75] (byte) plot::y#5 ← (byte) line::y1#0 [ plot::x#5 plot::y#5 ]
-  [76] (byte~) plot::x#14 ← (byte) plot::x#5 [ plot::y#5 plot::x#14 ]
-  [77] (byte~) plot::y#14 ← (byte) plot::y#5 [ plot::x#14 plot::y#14 ]
-  [78] call plot param-assignment [ ]
+line::@10: scope:[line]  from line::@23
+  [92] (byte) line_ydxd::y#1 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 ]
+  [93] (byte) line_ydxd::x#1 ← (byte) line::x0#0 [ line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 ]
+  [94] (byte) line_ydxd::y1#1 ← (byte) line::y1#0 [ line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 ]
+  [95] (byte) line_ydxd::yd#1 ← (byte) line::yd#3 [ line::xd#0 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 ]
+  [96] (byte) line_ydxd::xd#1 ← (byte) line::xd#0 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#1 ]
+  [97] (byte~) line_ydxd::xd#7 ← (byte) line_ydxd::xd#1 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#7 ]
+  [98] (byte~) line_ydxd::x#8 ← (byte) line_ydxd::x#1 [ line_ydxd::y#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#7 line_ydxd::x#8 ]
+  [99] (byte~) line_ydxd::y#8 ← (byte) line_ydxd::y#1 [ line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#7 line_ydxd::x#8 line_ydxd::y#8 ]
+  [100] (byte~) line_ydxd::yd#7 ← (byte) line_ydxd::yd#1 [ line_ydxd::y1#1 line_ydxd::xd#7 line_ydxd::x#8 line_ydxd::y#8 line_ydxd::yd#7 ]
+  [101] (byte~) line_ydxd::y1#7 ← (byte) line_ydxd::y1#1 [ line_ydxd::xd#7 line_ydxd::x#8 line_ydxd::y#8 line_ydxd::yd#7 line_ydxd::y1#7 ]
+  [102] call line_ydxd param-assignment [ ]
   to:line::@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  [79] (byte) plot::y#9 ← phi( line::@15/(byte~) plot::y#10 line::@17/(byte~) plot::y#11 line::@19/(byte~) plot::y#12 line::@2/(byte~) plot::y#13 line::@22/(byte~) plot::y#14 line::@24/(byte~) plot::y#15 line::@3/(byte~) plot::y#16 line::@7/(byte~) plot::y#17 line_xdyi::@1/(byte~) plot::y#18 ) [ plot::x#9 plot::y#9 ]
-  [79] (byte) plot::x#9 ← phi( line::@15/(byte~) plot::x#10 line::@17/(byte~) plot::x#11 line::@19/(byte~) plot::x#12 line::@2/(byte~) plot::x#13 line::@22/(byte~) plot::x#14 line::@24/(byte~) plot::x#15 line::@3/(byte~) plot::x#16 line::@7/(byte~) plot::x#17 line_xdyi::@1/(byte~) plot::x#18 ) [ plot::x#9 plot::y#9 ]
-  [80] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::$0 ]
-  [81] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#9 plot::y#9 plot::plotter_x#1 ]
-  [82] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::plotter_x#1 plot::$1 ]
-  [83] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ]
-  [84] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::$2 ]
-  [85] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::plotter_y#1 ]
-  [86] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ]
-  [87] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ]
-  [88] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ]
-  [89] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ]
-  [90] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9 [ plot::plotter#0 plot::$5 plot::$6 ]
-  [91] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ]
-  [92] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ]
+line::@9: scope:[line]  from line::@1
+  [103] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ]
+  [104] if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ]
+  to:line::@27
+line::@27: scope:[line]  from line::@9
+  [105] (byte) line_xdyi::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#10 line_xdyi::x#1 ]
+  [106] (byte) line_xdyi::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 ]
+  [107] (byte) line_xdyi::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 ]
+  [108] (byte) line_xdyi::xd#1 ← (byte) line::xd#0 [ line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 ]
+  [109] (byte) line_xdyi::yd#1 ← (byte) line::yd#10 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#1 ]
+  [110] (byte~) line_xdyi::yd#8 ← (byte) line_xdyi::yd#1 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#8 ]
+  [111] (byte~) line_xdyi::x#9 ← (byte) line_xdyi::x#1 [ line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#8 line_xdyi::x#9 ]
+  [112] (byte~) line_xdyi::y#9 ← (byte) line_xdyi::y#1 [ line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#8 line_xdyi::x#9 line_xdyi::y#9 ]
+  [113] (byte~) line_xdyi::xd#8 ← (byte) line_xdyi::xd#1 [ line_xdyi::x1#1 line_xdyi::yd#8 line_xdyi::x#9 line_xdyi::y#9 line_xdyi::xd#8 ]
+  [114] (byte~) line_xdyi::x1#8 ← (byte) line_xdyi::x1#1 [ line_xdyi::yd#8 line_xdyi::x#9 line_xdyi::y#9 line_xdyi::xd#8 line_xdyi::x1#8 ]
+  [115] call line_xdyi param-assignment [ ]
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  [116] (byte) line_ydxi::y#1 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 ]
+  [117] (byte) line_ydxi::x#1 ← (byte) line::x1#0 [ line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 ]
+  [118] (byte) line_ydxi::y1#1 ← (byte) line::y0#0 [ line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 ]
+  [119] (byte) line_ydxi::yd#1 ← (byte) line::yd#10 [ line::xd#0 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 ]
+  [120] (byte) line_ydxi::xd#1 ← (byte) line::xd#0 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#1 ]
+  [121] (byte~) line_ydxi::xd#7 ← (byte) line_ydxi::xd#1 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#7 ]
+  [122] (byte~) line_ydxi::x#8 ← (byte) line_ydxi::x#1 [ line_ydxi::y#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#7 line_ydxi::x#8 ]
+  [123] (byte~) line_ydxi::y#8 ← (byte) line_ydxi::y#1 [ line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#7 line_ydxi::x#8 line_ydxi::y#8 ]
+  [124] (byte~) line_ydxi::yd#7 ← (byte) line_ydxi::yd#1 [ line_ydxi::y1#1 line_ydxi::xd#7 line_ydxi::x#8 line_ydxi::y#8 line_ydxi::yd#7 ]
+  [125] (byte~) line_ydxi::y1#7 ← (byte) line_ydxi::y1#1 [ line_ydxi::xd#7 line_ydxi::x#8 line_ydxi::y#8 line_ydxi::yd#7 line_ydxi::y1#7 ]
+  [126] call line_ydxi param-assignment [ ]
+  to:line::@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  [127] (byte) line_ydxi::y1#6 ← phi( line::@13/(byte~) line_ydxi::y1#7 line::@3/(byte~) line_ydxi::y1#8 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [127] (byte) line_ydxi::yd#5 ← phi( line::@13/(byte~) line_ydxi::yd#7 line::@3/(byte~) line_ydxi::yd#8 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [127] (byte) line_ydxi::y#6 ← phi( line::@13/(byte~) line_ydxi::y#8 line::@3/(byte~) line_ydxi::y#9 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [127] (byte) line_ydxi::x#5 ← phi( line::@13/(byte~) line_ydxi::x#8 line::@3/(byte~) line_ydxi::x#9 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [127] (byte) line_ydxi::xd#2 ← phi( line::@13/(byte~) line_ydxi::xd#7 line::@3/(byte~) line_ydxi::xd#8 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [128] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ]
+  [129] (byte~) line_ydxi::x#10 ← (byte) line_ydxi::x#5 [ line_ydxi::xd#2 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 line_ydxi::x#10 ]
+  [130] (byte~) line_ydxi::y#10 ← (byte) line_ydxi::y#6 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 line_ydxi::x#10 line_ydxi::y#10 ]
+  [131] (byte~) line_ydxi::e#7 ← (byte) line_ydxi::e#0 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#10 line_ydxi::y#10 line_ydxi::e#7 ]
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@6
+  [132] (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte~) line_ydxi::e#7 line_ydxi::@6/(byte~) line_ydxi::e#8 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  [132] (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte~) line_ydxi::y#10 line_ydxi::@6/(byte~) line_ydxi::y#11 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  [132] (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte~) line_ydxi::x#10 line_ydxi::@6/(byte~) line_ydxi::x#11 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  [133] (byte) plot::x#2 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 ]
+  [134] (byte) plot::y#2 ← (byte) line_ydxi::y#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 plot::y#2 ]
+  [135] (byte~) plot::x#8 ← (byte) plot::x#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::y#2 plot::x#8 ]
+  [136] (byte~) plot::y#8 ← (byte) plot::y#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#8 plot::y#8 ]
+  [137] call plot param-assignment [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  [138] (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::e#3 line_ydxi::y#2 ]
+  [139] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ]
+  [140] if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@7 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ]
+  to:line_ydxi::@3
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  [141] (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#2 ]
+  [142] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ]
+  [143] (byte~) line_ydxi::x#12 ← (byte) line_ydxi::x#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#2 line_ydxi::x#12 ]
+  [144] (byte~) line_ydxi::e#9 ← (byte) line_ydxi::e#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#12 line_ydxi::e#9 ]
+  to:line_ydxi::@2
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@7
+  [145] (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte~) line_ydxi::e#9 line_ydxi::@7/(byte~) line_ydxi::e#10 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#6 line_ydxi::e#6 ]
+  [145] (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte~) line_ydxi::x#12 line_ydxi::@7/(byte~) line_ydxi::x#13 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#6 line_ydxi::e#6 ]
+  [146] (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#6 line_ydxi::e#6 line_ydxi::$8 ]
+  [147] if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@6 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#6 line_ydxi::e#6 ]
+  to:line_ydxi::@return
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  [148] return  [ ]
+  to:@return
+line_ydxi::@6: scope:[line_ydxi]  from line_ydxi::@2
+  [149] (byte~) line_ydxi::x#11 ← (byte) line_ydxi::x#6 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#11 line_ydxi::y#2 line_ydxi::e#6 ]
+  [150] (byte~) line_ydxi::y#11 ← (byte) line_ydxi::y#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#11 line_ydxi::y#11 line_ydxi::e#6 ]
+  [151] (byte~) line_ydxi::e#8 ← (byte) line_ydxi::e#6 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#11 line_ydxi::y#11 line_ydxi::e#8 ]
+  to:line_ydxi::@1
+line_ydxi::@7: scope:[line_ydxi]  from line_ydxi::@5
+  [152] (byte~) line_ydxi::x#13 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#13 ]
+  [153] (byte~) line_ydxi::e#10 ← (byte) line_ydxi::e#1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#13 line_ydxi::e#10 ]
+  to:line_ydxi::@2
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  [154] (byte) plot::y#4 ← phi( line_xdyd::@1/(byte~) plot::y#5 line_xdyi::@1/(byte~) plot::y#6 line_ydxd::@1/(byte~) plot::y#7 line_ydxi::@1/(byte~) plot::y#8 ) [ plot::x#4 plot::y#4 ]
+  [154] (byte) plot::x#4 ← phi( line_xdyd::@1/(byte~) plot::x#5 line_xdyi::@1/(byte~) plot::x#6 line_ydxd::@1/(byte~) plot::x#7 line_ydxi::@1/(byte~) plot::x#8 ) [ plot::x#4 plot::y#4 ]
+  [155] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::$0 ]
+  [156] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#4 plot::y#4 plot::plotter_x#1 ]
+  [157] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::plotter_x#1 plot::$1 ]
+  [158] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ]
+  [159] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::$2 ]
+  [160] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::plotter_y#1 ]
+  [161] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ]
+  [162] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ]
+  [163] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ]
+  [164] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ]
+  [165] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4 [ plot::plotter#0 plot::$5 plot::$6 ]
+  [166] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ]
+  [167] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ]
   to:plot::@return
 plot::@return: scope:[plot]  from plot
-  [93] return  [ ]
+  [168] return  [ ]
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  [94] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ]
-  [95] (byte~) line_xdyi::x#7 ← (byte) line_xdyi::x#0 [ line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 line_xdyi::x#7 ]
-  [96] (byte~) line_xdyi::y#7 ← (byte) line_xdyi::y#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 line_xdyi::x#7 line_xdyi::y#7 ]
-  [97] (byte~) line_xdyi::e#7 ← (byte) line_xdyi::e#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#7 line_xdyi::y#7 line_xdyi::e#7 ]
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  [169] (byte) line_xdyi::x1#6 ← phi( line::@17/(byte~) line_xdyi::x1#7 line::@27/(byte~) line_xdyi::x1#8 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [169] (byte) line_xdyi::xd#5 ← phi( line::@17/(byte~) line_xdyi::xd#7 line::@27/(byte~) line_xdyi::xd#8 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [169] (byte) line_xdyi::y#5 ← phi( line::@17/(byte~) line_xdyi::y#8 line::@27/(byte~) line_xdyi::y#9 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [169] (byte) line_xdyi::x#6 ← phi( line::@17/(byte~) line_xdyi::x#8 line::@27/(byte~) line_xdyi::x#9 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [169] (byte) line_xdyi::yd#2 ← phi( line::@17/(byte~) line_xdyi::yd#7 line::@27/(byte~) line_xdyi::yd#8 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [170] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ]
+  [171] (byte~) line_xdyi::x#10 ← (byte) line_xdyi::x#6 [ line_xdyi::yd#2 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 line_xdyi::x#10 ]
+  [172] (byte~) line_xdyi::y#10 ← (byte) line_xdyi::y#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 line_xdyi::x#10 line_xdyi::y#10 ]
+  [173] (byte~) line_xdyi::e#7 ← (byte) line_xdyi::e#0 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#10 line_xdyi::y#10 line_xdyi::e#7 ]
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@6
-  [98] (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte~) line_xdyi::e#7 line_xdyi::@6/(byte~) line_xdyi::e#8 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [98] (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte~) line_xdyi::y#7 line_xdyi::@6/(byte~) line_xdyi::y#8 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [98] (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte~) line_xdyi::x#7 line_xdyi::@6/(byte~) line_xdyi::x#8 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [99] (byte) plot::x#8 ← (byte) line_xdyi::x#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 plot::x#8 ]
-  [100] (byte) plot::y#8 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 plot::x#8 plot::y#8 ]
-  [101] (byte~) plot::x#18 ← (byte) plot::x#8 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#18 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 plot::y#8 ]
-  [102] (byte~) plot::y#18 ← (byte) plot::y#8 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#18 plot::y#18 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [103] call plot param-assignment [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
+  [174] (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte~) line_xdyi::e#7 line_xdyi::@6/(byte~) line_xdyi::e#8 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [174] (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte~) line_xdyi::y#10 line_xdyi::@6/(byte~) line_xdyi::y#11 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [174] (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte~) line_xdyi::x#10 line_xdyi::@6/(byte~) line_xdyi::x#11 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [175] (byte) plot::x#0 ← (byte) line_xdyi::x#3 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 plot::x#0 ]
+  [176] (byte) plot::y#0 ← (byte) line_xdyi::y#3 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 plot::x#0 plot::y#0 ]
+  [177] (byte~) plot::x#6 ← (byte) plot::x#0 [ plot::x#6 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 plot::y#0 ]
+  [178] (byte~) plot::y#6 ← (byte) plot::y#0 [ plot::x#6 plot::y#6 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [179] call plot param-assignment [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  [104] (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::e#3 line_xdyi::x#1 ]
-  [105] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ]
-  [106] if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@7 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ]
+  [180] (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::e#3 line_xdyi::x#2 ]
+  [181] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ]
+  [182] if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@7 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ]
   to:line_xdyi::@3
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  [107] (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#1 ]
-  [108] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ]
-  [109] (byte~) line_xdyi::y#9 ← (byte) line_xdyi::y#1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#2 line_xdyi::y#9 ]
-  [110] (byte~) line_xdyi::e#9 ← (byte) line_xdyi::e#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#9 line_xdyi::e#9 ]
+  [183] (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#2 ]
+  [184] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ]
+  [185] (byte~) line_xdyi::y#12 ← (byte) line_xdyi::y#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#2 line_xdyi::y#12 ]
+  [186] (byte~) line_xdyi::e#9 ← (byte) line_xdyi::e#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#12 line_xdyi::e#9 ]
   to:line_xdyi::@2
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@7
-  [111] (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte~) line_xdyi::e#9 line_xdyi::@7/(byte~) line_xdyi::e#10 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ]
-  [111] (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte~) line_xdyi::y#9 line_xdyi::@7/(byte~) line_xdyi::y#10 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ]
-  [112] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 line_xdyi::$8 ]
-  [113] if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@6 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ]
+  [187] (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte~) line_xdyi::e#9 line_xdyi::@7/(byte~) line_xdyi::e#10 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ]
+  [187] (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte~) line_xdyi::y#12 line_xdyi::@7/(byte~) line_xdyi::y#13 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ]
+  [188] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 line_xdyi::$8 ]
+  [189] if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@6 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ]
   to:line_xdyi::@return
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
-  [114] return  [ ]
+  [190] return  [ ]
   to:@return
 line_xdyi::@6: scope:[line_xdyi]  from line_xdyi::@2
-  [115] (byte~) line_xdyi::x#8 ← (byte) line_xdyi::x#1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#8 line_xdyi::y#5 line_xdyi::e#6 ]
-  [116] (byte~) line_xdyi::y#8 ← (byte) line_xdyi::y#5 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#8 line_xdyi::y#8 line_xdyi::e#6 ]
-  [117] (byte~) line_xdyi::e#8 ← (byte) line_xdyi::e#6 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#8 line_xdyi::y#8 line_xdyi::e#8 ]
+  [191] (byte~) line_xdyi::x#11 ← (byte) line_xdyi::x#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#11 line_xdyi::y#6 line_xdyi::e#6 ]
+  [192] (byte~) line_xdyi::y#11 ← (byte) line_xdyi::y#6 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#11 line_xdyi::y#11 line_xdyi::e#6 ]
+  [193] (byte~) line_xdyi::e#8 ← (byte) line_xdyi::e#6 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#11 line_xdyi::y#11 line_xdyi::e#8 ]
   to:line_xdyi::@1
 line_xdyi::@7: scope:[line_xdyi]  from line_xdyi::@5
-  [118] (byte~) line_xdyi::y#10 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#10 ]
-  [119] (byte~) line_xdyi::e#10 ← (byte) line_xdyi::e#1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#10 line_xdyi::e#10 ]
+  [194] (byte~) line_xdyi::y#13 ← (byte) line_xdyi::y#3 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#13 ]
+  [195] (byte~) line_xdyi::e#10 ← (byte) line_xdyi::e#1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#13 line_xdyi::e#10 ]
   to:line_xdyi::@2
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  [196] (byte) line_ydxd::y1#6 ← phi( line::@10/(byte~) line_ydxd::y1#7 line::@6/(byte~) line_ydxd::y1#8 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [196] (byte) line_ydxd::yd#5 ← phi( line::@10/(byte~) line_ydxd::yd#7 line::@6/(byte~) line_ydxd::yd#8 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [196] (byte) line_ydxd::y#6 ← phi( line::@10/(byte~) line_ydxd::y#8 line::@6/(byte~) line_ydxd::y#9 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [196] (byte) line_ydxd::x#5 ← phi( line::@10/(byte~) line_ydxd::x#8 line::@6/(byte~) line_ydxd::x#9 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [196] (byte) line_ydxd::xd#2 ← phi( line::@10/(byte~) line_ydxd::xd#7 line::@6/(byte~) line_ydxd::xd#8 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [197] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ]
+  [198] (byte~) line_ydxd::x#10 ← (byte) line_ydxd::x#5 [ line_ydxd::xd#2 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 line_ydxd::x#10 ]
+  [199] (byte~) line_ydxd::y#10 ← (byte) line_ydxd::y#6 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 line_ydxd::x#10 line_ydxd::y#10 ]
+  [200] (byte~) line_ydxd::e#7 ← (byte) line_ydxd::e#0 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#10 line_ydxd::y#10 line_ydxd::e#7 ]
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@6
+  [201] (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte~) line_ydxd::e#7 line_ydxd::@6/(byte~) line_ydxd::e#8 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [201] (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte~) line_ydxd::y#10 line_ydxd::@6/(byte~) line_ydxd::y#11 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [201] (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte~) line_ydxd::x#10 line_ydxd::@6/(byte~) line_ydxd::x#11 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [202] (byte) plot::x#3 ← (byte) line_ydxd::x#3 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 plot::x#3 ]
+  [203] (byte) plot::y#3 ← (byte) line_ydxd::y#3 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 plot::x#3 plot::y#3 ]
+  [204] (byte~) plot::x#7 ← (byte) plot::x#3 [ plot::x#7 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 plot::y#3 ]
+  [205] (byte~) plot::y#7 ← (byte) plot::y#3 [ plot::x#7 plot::y#7 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [206] call plot param-assignment [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  [207] (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::e#3 line_ydxd::y#2 ]
+  [208] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ]
+  [209] if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@7 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ]
+  to:line_ydxd::@3
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  [210] (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#2 ]
+  [211] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ]
+  [212] (byte~) line_ydxd::x#12 ← (byte) line_ydxd::x#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#2 line_ydxd::x#12 ]
+  [213] (byte~) line_ydxd::e#9 ← (byte) line_ydxd::e#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#12 line_ydxd::e#9 ]
+  to:line_ydxd::@2
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@7
+  [214] (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte~) line_ydxd::e#9 line_ydxd::@7/(byte~) line_ydxd::e#10 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#6 line_ydxd::e#6 ]
+  [214] (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte~) line_ydxd::x#12 line_ydxd::@7/(byte~) line_ydxd::x#13 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#6 line_ydxd::e#6 ]
+  [215] (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#6 line_ydxd::e#6 line_ydxd::$8 ]
+  [216] if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@6 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#6 line_ydxd::e#6 ]
+  to:line_ydxd::@return
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  [217] return  [ ]
+  to:@return
+line_ydxd::@6: scope:[line_ydxd]  from line_ydxd::@2
+  [218] (byte~) line_ydxd::x#11 ← (byte) line_ydxd::x#6 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#11 line_ydxd::y#2 line_ydxd::e#6 ]
+  [219] (byte~) line_ydxd::y#11 ← (byte) line_ydxd::y#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#11 line_ydxd::y#11 line_ydxd::e#6 ]
+  [220] (byte~) line_ydxd::e#8 ← (byte) line_ydxd::e#6 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#11 line_ydxd::y#11 line_ydxd::e#8 ]
+  to:line_ydxd::@1
+line_ydxd::@7: scope:[line_ydxd]  from line_ydxd::@5
+  [221] (byte~) line_ydxd::x#13 ← (byte) line_ydxd::x#3 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#13 ]
+  [222] (byte~) line_ydxd::e#10 ← (byte) line_ydxd::e#1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#13 line_ydxd::e#10 ]
+  to:line_ydxd::@2
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  [223] (byte) line_xdyd::x1#6 ← phi( line::@20/(byte~) line_xdyd::x1#7 line::@24/(byte~) line_xdyd::x1#8 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [223] (byte) line_xdyd::xd#5 ← phi( line::@20/(byte~) line_xdyd::xd#7 line::@24/(byte~) line_xdyd::xd#8 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [223] (byte) line_xdyd::y#5 ← phi( line::@20/(byte~) line_xdyd::y#8 line::@24/(byte~) line_xdyd::y#9 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [223] (byte) line_xdyd::x#6 ← phi( line::@20/(byte~) line_xdyd::x#8 line::@24/(byte~) line_xdyd::x#9 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [223] (byte) line_xdyd::yd#2 ← phi( line::@20/(byte~) line_xdyd::yd#7 line::@24/(byte~) line_xdyd::yd#8 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [224] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ]
+  [225] (byte~) line_xdyd::x#10 ← (byte) line_xdyd::x#6 [ line_xdyd::yd#2 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 line_xdyd::x#10 ]
+  [226] (byte~) line_xdyd::y#10 ← (byte) line_xdyd::y#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 line_xdyd::x#10 line_xdyd::y#10 ]
+  [227] (byte~) line_xdyd::e#7 ← (byte) line_xdyd::e#0 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#10 line_xdyd::y#10 line_xdyd::e#7 ]
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@6
+  [228] (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte~) line_xdyd::e#7 line_xdyd::@6/(byte~) line_xdyd::e#8 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [228] (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte~) line_xdyd::y#10 line_xdyd::@6/(byte~) line_xdyd::y#11 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [228] (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte~) line_xdyd::x#10 line_xdyd::@6/(byte~) line_xdyd::x#11 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [229] (byte) plot::x#1 ← (byte) line_xdyd::x#3 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 plot::x#1 ]
+  [230] (byte) plot::y#1 ← (byte) line_xdyd::y#3 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 plot::x#1 plot::y#1 ]
+  [231] (byte~) plot::x#5 ← (byte) plot::x#1 [ plot::x#5 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 plot::y#1 ]
+  [232] (byte~) plot::y#5 ← (byte) plot::y#1 [ plot::x#5 plot::y#5 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [233] call plot param-assignment [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  [234] (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::e#3 line_xdyd::x#2 ]
+  [235] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ]
+  [236] if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@7 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ]
+  to:line_xdyd::@3
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  [237] (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#2 ]
+  [238] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ]
+  [239] (byte~) line_xdyd::y#12 ← (byte) line_xdyd::y#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#2 line_xdyd::y#12 ]
+  [240] (byte~) line_xdyd::e#9 ← (byte) line_xdyd::e#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#12 line_xdyd::e#9 ]
+  to:line_xdyd::@2
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@7
+  [241] (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte~) line_xdyd::e#9 line_xdyd::@7/(byte~) line_xdyd::e#10 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ]
+  [241] (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte~) line_xdyd::y#12 line_xdyd::@7/(byte~) line_xdyd::y#13 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ]
+  [242] (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 line_xdyd::$8 ]
+  [243] if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@6 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ]
+  to:line_xdyd::@return
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  [244] return  [ ]
+  to:@return
+line_xdyd::@6: scope:[line_xdyd]  from line_xdyd::@2
+  [245] (byte~) line_xdyd::x#11 ← (byte) line_xdyd::x#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#11 line_xdyd::y#6 line_xdyd::e#6 ]
+  [246] (byte~) line_xdyd::y#11 ← (byte) line_xdyd::y#6 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#11 line_xdyd::y#11 line_xdyd::e#6 ]
+  [247] (byte~) line_xdyd::e#8 ← (byte) line_xdyd::e#6 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#11 line_xdyd::y#11 line_xdyd::e#8 ]
+  to:line_xdyd::@1
+line_xdyd::@7: scope:[line_xdyd]  from line_xdyd::@5
+  [248] (byte~) line_xdyd::y#13 ← (byte) line_xdyd::y#3 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#13 ]
+  [249] (byte~) line_xdyd::e#10 ← (byte) line_xdyd::e#1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#13 line_xdyd::e#10 ]
+  to:line_xdyd::@2
 init_plot_tables: scope:[init_plot_tables]  from main::@3
-  [120] phi() [ ]
+  [250] phi() [ ]
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@9
-  [121] (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) 128 init_plot_tables::@9/(byte~) init_plot_tables::bit#5 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [121] (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) 0 init_plot_tables::@9/(byte~) init_plot_tables::x#5 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [122] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ]
-  [123] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [124] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [125] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [126] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ]
-  [127] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 init_plot_tables::bit#1 ]
+  [251] (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) 128 init_plot_tables::@9/(byte~) init_plot_tables::bit#5 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [251] (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) 0 init_plot_tables::@9/(byte~) init_plot_tables::x#5 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [252] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ]
+  [253] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [254] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [255] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [256] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ]
+  [257] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 init_plot_tables::bit#1 ]
   to:init_plot_tables::@5
 init_plot_tables::@5: scope:[init_plot_tables]  from init_plot_tables::@1
   to:init_plot_tables::@2
 init_plot_tables::@2: scope:[init_plot_tables]  from init_plot_tables::@10 init_plot_tables::@5
-  [128] (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@10/(byte~) init_plot_tables::bit#6 init_plot_tables::@5/(byte) 128 ) [ init_plot_tables::x#2 init_plot_tables::bit#4 ]
-  [129] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::bit#4 init_plot_tables::x#1 ]
-  [130] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@9 [ init_plot_tables::bit#4 init_plot_tables::x#1 ]
+  [258] (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@10/(byte~) init_plot_tables::bit#6 init_plot_tables::@5/(byte) 128 ) [ init_plot_tables::x#2 init_plot_tables::bit#4 ]
+  [259] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::bit#4 init_plot_tables::x#1 ]
+  [260] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@9 [ init_plot_tables::bit#4 init_plot_tables::x#1 ]
   to:init_plot_tables::@3
 init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@11 init_plot_tables::@2
-  [131] (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@11/(byte*~) init_plot_tables::yoffs#5 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [131] (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@11/(byte~) init_plot_tables::y#5 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [132] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ]
-  [133] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ]
-  [134] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ]
-  [135] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [136] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ]
-  [137] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [138] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ]
-  [139] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@12 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [261] (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@11/(byte*~) init_plot_tables::yoffs#5 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [261] (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@11/(byte~) init_plot_tables::y#5 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [262] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ]
+  [263] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ]
+  [264] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ]
+  [265] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [266] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ]
+  [267] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [268] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ]
+  [269] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@12 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
   to:init_plot_tables::@7
 init_plot_tables::@7: scope:[init_plot_tables]  from init_plot_tables::@3
-  [140] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ]
-  [141] (byte*~) init_plot_tables::yoffs#7 ← (byte*) init_plot_tables::yoffs#1 [ init_plot_tables::y#2 init_plot_tables::yoffs#7 ]
+  [270] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ]
+  [271] (byte*~) init_plot_tables::yoffs#7 ← (byte*) init_plot_tables::yoffs#1 [ init_plot_tables::y#2 init_plot_tables::yoffs#7 ]
   to:init_plot_tables::@4
 init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@12 init_plot_tables::@7
-  [142] (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@12/(byte*~) init_plot_tables::yoffs#6 init_plot_tables::@7/(byte*~) init_plot_tables::yoffs#7 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#4 ]
-  [143] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::yoffs#4 init_plot_tables::y#1 ]
-  [144] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@11 [ init_plot_tables::yoffs#4 init_plot_tables::y#1 ]
+  [272] (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@12/(byte*~) init_plot_tables::yoffs#6 init_plot_tables::@7/(byte*~) init_plot_tables::yoffs#7 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#4 ]
+  [273] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::yoffs#4 init_plot_tables::y#1 ]
+  [274] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@11 [ init_plot_tables::yoffs#4 init_plot_tables::y#1 ]
   to:init_plot_tables::@return
 init_plot_tables::@return: scope:[init_plot_tables]  from init_plot_tables::@4
-  [145] return  [ ]
+  [275] return  [ ]
   to:@return
 init_plot_tables::@11: scope:[init_plot_tables]  from init_plot_tables::@4
-  [146] (byte~) init_plot_tables::y#5 ← (byte) init_plot_tables::y#1 [ init_plot_tables::y#5 init_plot_tables::yoffs#4 ]
-  [147] (byte*~) init_plot_tables::yoffs#5 ← (byte*) init_plot_tables::yoffs#4 [ init_plot_tables::y#5 init_plot_tables::yoffs#5 ]
+  [276] (byte~) init_plot_tables::y#5 ← (byte) init_plot_tables::y#1 [ init_plot_tables::y#5 init_plot_tables::yoffs#4 ]
+  [277] (byte*~) init_plot_tables::yoffs#5 ← (byte*) init_plot_tables::yoffs#4 [ init_plot_tables::y#5 init_plot_tables::yoffs#5 ]
   to:init_plot_tables::@3
 init_plot_tables::@12: scope:[init_plot_tables]  from init_plot_tables::@3
-  [148] (byte*~) init_plot_tables::yoffs#6 ← (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#6 ]
+  [278] (byte*~) init_plot_tables::yoffs#6 ← (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#6 ]
   to:init_plot_tables::@4
 init_plot_tables::@9: scope:[init_plot_tables]  from init_plot_tables::@2
-  [149] (byte~) init_plot_tables::x#5 ← (byte) init_plot_tables::x#1 [ init_plot_tables::x#5 init_plot_tables::bit#4 ]
-  [150] (byte~) init_plot_tables::bit#5 ← (byte) init_plot_tables::bit#4 [ init_plot_tables::x#5 init_plot_tables::bit#5 ]
+  [279] (byte~) init_plot_tables::x#5 ← (byte) init_plot_tables::x#1 [ init_plot_tables::x#5 init_plot_tables::bit#4 ]
+  [280] (byte~) init_plot_tables::bit#5 ← (byte) init_plot_tables::bit#4 [ init_plot_tables::x#5 init_plot_tables::bit#5 ]
   to:init_plot_tables::@1
 init_plot_tables::@10: scope:[init_plot_tables]  from init_plot_tables::@1
-  [151] (byte~) init_plot_tables::bit#6 ← (byte) init_plot_tables::bit#1 [ init_plot_tables::x#2 init_plot_tables::bit#6 ]
+  [281] (byte~) init_plot_tables::bit#6 ← (byte) init_plot_tables::bit#1 [ init_plot_tables::x#2 init_plot_tables::bit#6 ]
   to:init_plot_tables::@2
 init_screen: scope:[init_screen]  from main
-  [152] phi() [ ]
+  [282] phi() [ ]
   to:init_screen::@1
 init_screen::@1: scope:[init_screen]  from init_screen init_screen::@5
-  [153] (byte*) init_screen::b#2 ← phi( init_screen/(const byte*) BITMAP#0 init_screen::@5/(byte*~) init_screen::b#3 ) [ init_screen::b#2 ]
-  [154] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ]
-  [155] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ]
-  [156] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@5 [ init_screen::b#1 ]
+  [283] (byte*) init_screen::b#2 ← phi( init_screen/(const byte*) BITMAP#0 init_screen::@5/(byte*~) init_screen::b#3 ) [ init_screen::b#2 ]
+  [284] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ]
+  [285] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ]
+  [286] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@5 [ init_screen::b#1 ]
   to:init_screen::@2
 init_screen::@2: scope:[init_screen]  from init_screen::@1 init_screen::@6
-  [157] (byte*) init_screen::c#2 ← phi( init_screen::@6/(byte*~) init_screen::c#3 init_screen::@1/(const byte*) SCREEN#0 ) [ init_screen::c#2 ]
-  [158] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ]
-  [159] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ]
-  [160] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@6 [ init_screen::c#1 ]
+  [287] (byte*) init_screen::c#2 ← phi( init_screen::@6/(byte*~) init_screen::c#3 init_screen::@1/(const byte*) SCREEN#0 ) [ init_screen::c#2 ]
+  [288] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ]
+  [289] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ]
+  [290] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@6 [ init_screen::c#1 ]
   to:init_screen::@return
 init_screen::@return: scope:[init_screen]  from init_screen::@2
-  [161] return  [ ]
+  [291] return  [ ]
   to:@return
 init_screen::@6: scope:[init_screen]  from init_screen::@2
-  [162] (byte*~) init_screen::c#3 ← (byte*) init_screen::c#1 [ init_screen::c#3 ]
+  [292] (byte*~) init_screen::c#3 ← (byte*) init_screen::c#1 [ init_screen::c#3 ]
   to:init_screen::@2
 init_screen::@5: scope:[init_screen]  from init_screen::@1
-  [163] (byte*~) init_screen::b#3 ← (byte*) init_screen::b#1 [ init_screen::b#3 ]
+  [293] (byte*~) init_screen::b#3 ← (byte*) init_screen::b#1 [ init_screen::b#3 ]
   to:init_screen::@1
 
-Created 16 initial phi equivalence classes
+Created 51 initial phi equivalence classes
 Coalesced [24] lines::l#4 ← lines::l#1
-Coalesced [39] plot::x#16 ← plot::x#2
-Coalesced [40] plot::y#16 ← plot::y#2
-Coalesced [44] plot::x#12 ← plot::x#3
-Coalesced [45] plot::y#12 ← plot::y#3
-Coalesced [49] plot::x#13 ← plot::x#0
-Coalesced [50] plot::y#13 ← plot::y#0
-Coalesced [54] plot::x#11 ← plot::x#1
-Coalesced [55] plot::y#11 ← plot::y#1
-Coalesced [61] plot::x#10 ← plot::x#6
-Coalesced [62] plot::y#10 ← plot::y#6
-Coalesced [66] plot::x#15 ← plot::x#7
-Coalesced [67] plot::y#15 ← plot::y#7
-Coalesced [71] plot::x#17 ← plot::x#4
-Coalesced [72] plot::y#17 ← plot::y#4
-Coalesced [76] plot::x#14 ← plot::x#5
-Coalesced [77] plot::y#14 ← plot::y#5
-Coalesced [95] line_xdyi::x#7 ← line_xdyi::x#0
-Coalesced [96] line_xdyi::y#7 ← line_xdyi::y#0
-Coalesced [97] line_xdyi::e#7 ← line_xdyi::e#0
-Coalesced [101] plot::x#18 ← plot::x#8
-Coalesced [102] plot::y#18 ← plot::y#8
-Coalesced [109] line_xdyi::y#9 ← line_xdyi::y#1
-Coalesced [110] line_xdyi::e#9 ← line_xdyi::e#2
-Coalesced [115] line_xdyi::x#8 ← line_xdyi::x#1
-Coalesced [116] line_xdyi::y#8 ← line_xdyi::y#5
-Coalesced [117] line_xdyi::e#8 ← line_xdyi::e#6
-Coalesced (already) [118] line_xdyi::y#10 ← line_xdyi::y#2
-Coalesced [119] line_xdyi::e#10 ← line_xdyi::e#1
-Coalesced [141] init_plot_tables::yoffs#7 ← init_plot_tables::yoffs#1
-Coalesced [146] init_plot_tables::y#5 ← init_plot_tables::y#1
-Coalesced [147] init_plot_tables::yoffs#5 ← init_plot_tables::yoffs#4
-Coalesced (already) [148] init_plot_tables::yoffs#6 ← init_plot_tables::yoffs#2
-Coalesced [149] init_plot_tables::x#5 ← init_plot_tables::x#1
-Coalesced [150] init_plot_tables::bit#5 ← init_plot_tables::bit#4
-Coalesced [151] init_plot_tables::bit#6 ← init_plot_tables::bit#1
-Coalesced [162] init_screen::c#3 ← init_screen::c#1
-Coalesced [163] init_screen::b#3 ← init_screen::b#1
-Coalesced down to 12 phi equivalence classes
+Coalesced [35] line_xdyi::yd#7 ← line_xdyi::yd#0
+Coalesced [36] line_xdyi::x#8 ← line_xdyi::x#0
+Coalesced [37] line_xdyi::y#8 ← line_xdyi::y#0
+Coalesced [38] line_xdyi::xd#7 ← line_xdyi::xd#0
+Coalesced [39] line_xdyi::x1#7 ← line_xdyi::x1#0
+Coalesced [47] line_ydxi::xd#8 ← line_ydxi::xd#0
+Coalesced [48] line_ydxi::x#9 ← line_ydxi::x#0
+Coalesced [49] line_ydxi::y#9 ← line_ydxi::y#0
+Coalesced [50] line_ydxi::yd#8 ← line_ydxi::yd#0
+Coalesced [51] line_ydxi::y1#8 ← line_ydxi::y1#0
+Coalesced [60] line_xdyd::yd#7 ← line_xdyd::yd#0
+Coalesced [61] line_xdyd::x#8 ← line_xdyd::x#0
+Coalesced [62] line_xdyd::y#8 ← line_xdyd::y#0
+Coalesced [63] line_xdyd::xd#7 ← line_xdyd::xd#0
+Coalesced [64] line_xdyd::x1#7 ← line_xdyd::x1#0
+Coalesced [71] line_ydxd::xd#8 ← line_ydxd::xd#0
+Coalesced [72] line_ydxd::x#9 ← line_ydxd::x#0
+Coalesced [73] line_ydxd::y#9 ← line_ydxd::y#0
+Coalesced [74] line_ydxd::yd#8 ← line_ydxd::yd#0
+Coalesced [75] line_ydxd::y1#8 ← line_ydxd::y1#0
+Coalesced [86] line_xdyd::yd#8 ← line_xdyd::yd#1
+Coalesced [87] line_xdyd::x#9 ← line_xdyd::x#1
+Coalesced [88] line_xdyd::y#9 ← line_xdyd::y#1
+Coalesced [89] line_xdyd::xd#8 ← line_xdyd::xd#1
+Coalesced [90] line_xdyd::x1#8 ← line_xdyd::x1#1
+Coalesced [97] line_ydxd::xd#7 ← line_ydxd::xd#1
+Coalesced [98] line_ydxd::x#8 ← line_ydxd::x#1
+Coalesced [99] line_ydxd::y#8 ← line_ydxd::y#1
+Coalesced [100] line_ydxd::yd#7 ← line_ydxd::yd#1
+Coalesced [101] line_ydxd::y1#7 ← line_ydxd::y1#1
+Coalesced [110] line_xdyi::yd#8 ← line_xdyi::yd#1
+Coalesced [111] line_xdyi::x#9 ← line_xdyi::x#1
+Coalesced [112] line_xdyi::y#9 ← line_xdyi::y#1
+Coalesced [113] line_xdyi::xd#8 ← line_xdyi::xd#1
+Coalesced [114] line_xdyi::x1#8 ← line_xdyi::x1#1
+Coalesced [121] line_ydxi::xd#7 ← line_ydxi::xd#1
+Coalesced [122] line_ydxi::x#8 ← line_ydxi::x#1
+Coalesced [123] line_ydxi::y#8 ← line_ydxi::y#1
+Coalesced [124] line_ydxi::yd#7 ← line_ydxi::yd#1
+Coalesced [125] line_ydxi::y1#7 ← line_ydxi::y1#1
+Coalesced [129] line_ydxi::x#10 ← line_ydxi::x#5
+Coalesced [130] line_ydxi::y#10 ← line_ydxi::y#6
+Coalesced [131] line_ydxi::e#7 ← line_ydxi::e#0
+Coalesced [135] plot::x#8 ← plot::x#2
+Coalesced [136] plot::y#8 ← plot::y#2
+Coalesced [143] line_ydxi::x#12 ← line_ydxi::x#2
+Coalesced [144] line_ydxi::e#9 ← line_ydxi::e#2
+Coalesced [149] line_ydxi::x#11 ← line_ydxi::x#6
+Coalesced [150] line_ydxi::y#11 ← line_ydxi::y#2
+Coalesced [151] line_ydxi::e#8 ← line_ydxi::e#6
+Coalesced (already) [152] line_ydxi::x#13 ← line_ydxi::x#3
+Coalesced [153] line_ydxi::e#10 ← line_ydxi::e#1
+Coalesced [171] line_xdyi::x#10 ← line_xdyi::x#6
+Coalesced [172] line_xdyi::y#10 ← line_xdyi::y#5
+Coalesced [173] line_xdyi::e#7 ← line_xdyi::e#0
+Coalesced [177] plot::x#6 ← plot::x#0
+Coalesced [178] plot::y#6 ← plot::y#0
+Coalesced [185] line_xdyi::y#12 ← line_xdyi::y#2
+Coalesced [186] line_xdyi::e#9 ← line_xdyi::e#2
+Coalesced [191] line_xdyi::x#11 ← line_xdyi::x#2
+Coalesced [192] line_xdyi::y#11 ← line_xdyi::y#6
+Coalesced [193] line_xdyi::e#8 ← line_xdyi::e#6
+Coalesced (already) [194] line_xdyi::y#13 ← line_xdyi::y#3
+Coalesced [195] line_xdyi::e#10 ← line_xdyi::e#1
+Coalesced [198] line_ydxd::x#10 ← line_ydxd::x#5
+Coalesced [199] line_ydxd::y#10 ← line_ydxd::y#6
+Coalesced [200] line_ydxd::e#7 ← line_ydxd::e#0
+Coalesced [204] plot::x#7 ← plot::x#3
+Coalesced [205] plot::y#7 ← plot::y#3
+Coalesced [212] line_ydxd::x#12 ← line_ydxd::x#2
+Coalesced [213] line_ydxd::e#9 ← line_ydxd::e#2
+Coalesced [218] line_ydxd::x#11 ← line_ydxd::x#6
+Coalesced [219] line_ydxd::y#11 ← line_ydxd::y#2
+Coalesced [220] line_ydxd::e#8 ← line_ydxd::e#6
+Coalesced (already) [221] line_ydxd::x#13 ← line_ydxd::x#3
+Coalesced [222] line_ydxd::e#10 ← line_ydxd::e#1
+Coalesced [225] line_xdyd::x#10 ← line_xdyd::x#6
+Coalesced [226] line_xdyd::y#10 ← line_xdyd::y#5
+Coalesced [227] line_xdyd::e#7 ← line_xdyd::e#0
+Coalesced [231] plot::x#5 ← plot::x#1
+Coalesced [232] plot::y#5 ← plot::y#1
+Coalesced [239] line_xdyd::y#12 ← line_xdyd::y#2
+Coalesced [240] line_xdyd::e#9 ← line_xdyd::e#2
+Coalesced [245] line_xdyd::x#11 ← line_xdyd::x#2
+Coalesced [246] line_xdyd::y#11 ← line_xdyd::y#6
+Coalesced [247] line_xdyd::e#8 ← line_xdyd::e#6
+Coalesced (already) [248] line_xdyd::y#13 ← line_xdyd::y#3
+Coalesced [249] line_xdyd::e#10 ← line_xdyd::e#1
+Coalesced [271] init_plot_tables::yoffs#7 ← init_plot_tables::yoffs#1
+Coalesced [276] init_plot_tables::y#5 ← init_plot_tables::y#1
+Coalesced [277] init_plot_tables::yoffs#5 ← init_plot_tables::yoffs#4
+Coalesced (already) [278] init_plot_tables::yoffs#6 ← init_plot_tables::yoffs#2
+Coalesced [279] init_plot_tables::x#5 ← init_plot_tables::x#1
+Coalesced [280] init_plot_tables::bit#5 ← init_plot_tables::bit#4
+Coalesced [281] init_plot_tables::bit#6 ← init_plot_tables::bit#1
+Coalesced [292] init_screen::c#3 ← init_screen::c#1
+Coalesced [293] init_screen::b#3 ← init_screen::b#1
+Coalesced down to 33 phi equivalence classes
 Culled Empty Block (label) lines::@4
+Culled Empty Block (label) line_ydxi::@6
+Culled Empty Block (label) line_ydxi::@7
 Culled Empty Block (label) line_xdyi::@6
 Culled Empty Block (label) line_xdyi::@7
+Culled Empty Block (label) line_ydxd::@6
+Culled Empty Block (label) line_ydxd::@7
+Culled Empty Block (label) line_xdyd::@6
+Culled Empty Block (label) line_xdyd::@7
 Culled Empty Block (label) init_plot_tables::@5
 Culled Empty Block (label) init_plot_tables::@11
 Culled Empty Block (label) init_plot_tables::@12
@@ -9370,7 +14602,7 @@ Culled Empty Block (label) init_plot_tables::@9
 Not culling empty block because it shares successor with its predecessor. (label) init_plot_tables::@10
 Culled Empty Block (label) init_screen::@6
 Culled Empty Block (label) init_screen::@5
-Block Sequence Planned @begin @7 @end main main::@3 main::@1 main::@5 main::@return lines lines::@1 lines::@3 lines::@return line line::@9 line::@10 line::@11 line::@return line::@3 line::@19 line::@2 line::@17 line::@1 line::@15 line::@24 line::@7 line::@22 plot plot::@return line_xdyi line_xdyi::@1 line_xdyi::@5 line_xdyi::@3 line_xdyi::@2 line_xdyi::@return init_plot_tables init_plot_tables::@1 init_plot_tables::@2 init_plot_tables::@3 init_plot_tables::@7 init_plot_tables::@4 init_plot_tables::@return init_plot_tables::@10 init_screen init_screen::@1 init_screen::@2 init_screen::@return 
+Block Sequence Planned @begin @10 @end main main::@3 main::@1 main::@5 main::@return lines lines::@1 lines::@3 lines::@return line line::@15 line::@16 line::@17 line::@return line::@3 line::@2 line::@20 line::@6 line::@1 line::@23 line::@24 line::@10 line::@9 line::@27 line::@13 line_ydxi line_ydxi::@1 line_ydxi::@5 line_ydxi::@3 line_ydxi::@2 line_ydxi::@return plot plot::@return line_xdyi line_xdyi::@1 line_xdyi::@5 line_xdyi::@3 line_xdyi::@2 line_xdyi::@return line_ydxd line_ydxd::@1 line_ydxd::@5 line_ydxd::@3 line_ydxd::@2 line_ydxd::@return line_xdyd line_xdyd::@1 line_xdyd::@5 line_xdyd::@3 line_xdyd::@2 line_xdyd::@return init_plot_tables init_plot_tables::@1 init_plot_tables::@2 init_plot_tables::@3 init_plot_tables::@7 init_plot_tables::@4 init_plot_tables::@return init_plot_tables::@10 init_screen init_screen::@1 init_screen::@2 init_screen::@return 
 Adding NOP phi() at start of lines
 Adding NOP phi() at start of init_plot_tables
 Adding NOP phi() at start of init_screen
@@ -9385,16 +14617,14 @@ Propagating live ranges...
 Propagating live ranges...
 Propagating live ranges...
 Propagating live ranges...
-Propagating live ranges...
-Propagating live ranges...
 CONTROL FLOW GRAPH - PHI MEM COALESCED
 @begin: scope:[]  from
-  to:@7
-@7: scope:[]  from @begin
+  to:@10
+@10: scope:[]  from @begin
   [0] call main param-assignment [ ]
   to:@end
-@end: scope:[]  from @7
-main: scope:[main]  from @7
+@end: scope:[]  from @10
+main: scope:[main]  from @10
   [1] *((const byte*) BGCOL#0) ← (byte) 0 [ ]
   [2] *((const byte*) FGCOL#0) ← (byte) 0 [ ]
   [3] *((const byte*) D011#0) ← (const byte) BMM#0|(const byte) DEN#0|(const byte) RSEL#0|(byte) 3 [ ]
@@ -9437,239 +14667,400 @@ lines::@return: scope:[lines]  from lines::@3
   to:@return
 line: scope:[line]  from lines::@1
   [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
-  to:line::@9
-line::@9: scope:[line]  from line
+  to:line::@15
+line::@15: scope:[line]  from line
   [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ]
   [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ]
-  to:line::@10
-line::@10: scope:[line]  from line::@9
-  [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
-  [28] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
-  to:line::@11
-line::@11: scope:[line]  from line::@10
-  [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyi::x#0 ]
-  [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 ]
-  [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ]
-  [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
-  [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ]
+  to:line::@16
+line::@16: scope:[line]  from line::@15
+  [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ]
+  [28] if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ]
+  to:line::@17
+line::@17: scope:[line]  from line::@16
+  [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#1 line_xdyi::x#0 ]
+  [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 ]
+  [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ]
+  [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
+  [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ]
   [34] call line_xdyi param-assignment [ ]
   to:line::@return
-line::@return: scope:[line]  from line::@11 line::@17 line::@19 line::@22 line::@24
+line::@return: scope:[line]  from line::@10 line::@13 line::@17 line::@20 line::@24 line::@27 line::@3 line::@6
   [35] return  [ ]
   to:@return
-line::@3: scope:[line]  from line::@10
-  [36] (byte) plot::x#2 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#2 ]
-  [37] (byte) plot::y#2 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#2 plot::y#2 ]
-  [38] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  to:line::@19
-line::@19: scope:[line]  from line::@3
-  [39] (byte) plot::x#3 ← (byte) line::x1#0 [ line::y1#0 plot::x#3 ]
-  [40] (byte) plot::y#3 ← (byte) line::y1#0 [ plot::x#3 plot::y#3 ]
-  [41] call plot param-assignment [ ]
+line::@3: scope:[line]  from line::@16
+  [36] (byte) line_ydxi::y#0 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 ]
+  [37] (byte) line_ydxi::x#0 ← (byte) line::x0#0 [ line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 ]
+  [38] (byte) line_ydxi::y1#0 ← (byte) line::y1#0 [ line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 ]
+  [39] (byte) line_ydxi::yd#0 ← (byte) line::yd#1 [ line::xd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 ]
+  [40] (byte) line_ydxi::xd#0 ← (byte) line::xd#1 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#0 ]
+  [41] call line_ydxi param-assignment [ ]
   to:line::@return
-line::@2: scope:[line]  from line::@9
-  [42] (byte) plot::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#0 ]
-  [43] (byte) plot::y#0 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#0 plot::y#0 ]
-  [44] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  to:line::@17
-line::@17: scope:[line]  from line::@2
-  [45] (byte) plot::x#1 ← (byte) line::x1#0 [ line::y1#0 plot::x#1 ]
-  [46] (byte) plot::y#1 ← (byte) line::y1#0 [ plot::x#1 plot::y#1 ]
-  [47] call plot param-assignment [ ]
+line::@2: scope:[line]  from line::@15
+  [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
+  [43] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ]
+  to:line::@20
+line::@20: scope:[line]  from line::@2
+  [44] (byte) line_xdyd::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyd::x#0 ]
+  [45] (byte) line_xdyd::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 ]
+  [46] (byte) line_xdyd::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 ]
+  [47] (byte) line_xdyd::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 ]
+  [48] (byte) line_xdyd::yd#0 ← (byte) line::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#0 ]
+  [49] call line_xdyd param-assignment [ ]
+  to:line::@return
+line::@6: scope:[line]  from line::@2
+  [50] (byte) line_ydxd::y#0 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 ]
+  [51] (byte) line_ydxd::x#0 ← (byte) line::x1#0 [ line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 ]
+  [52] (byte) line_ydxd::y1#0 ← (byte) line::y0#0 [ line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 ]
+  [53] (byte) line_ydxd::yd#0 ← (byte) line::yd#0 [ line::xd#1 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 ]
+  [54] (byte) line_ydxd::xd#0 ← (byte) line::xd#1 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#0 ]
+  [55] call line_ydxd param-assignment [ ]
   to:line::@return
 line::@1: scope:[line]  from line
-  [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
-  [49] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
-  to:line::@15
-line::@15: scope:[line]  from line::@1
-  [50] (byte) plot::x#6 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#6 ]
-  [51] (byte) plot::y#6 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#6 plot::y#6 ]
-  [52] call plot param-assignment [ line::x1#0 line::y1#0 ]
+  [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ]
+  [57] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ]
+  to:line::@23
+line::@23: scope:[line]  from line::@1
+  [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ]
+  [59] if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ]
   to:line::@24
-line::@24: scope:[line]  from line::@15
-  [53] (byte) plot::x#7 ← (byte) line::x1#0 [ line::y1#0 plot::x#7 ]
-  [54] (byte) plot::y#7 ← (byte) line::y1#0 [ plot::x#7 plot::y#7 ]
-  [55] call plot param-assignment [ ]
+line::@24: scope:[line]  from line::@23
+  [60] (byte) line_xdyd::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_xdyd::x#1 ]
+  [61] (byte) line_xdyd::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 ]
+  [62] (byte) line_xdyd::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 ]
+  [63] (byte) line_xdyd::xd#1 ← (byte) line::xd#0 [ line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 ]
+  [64] (byte) line_xdyd::yd#1 ← (byte) line::yd#3 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#1 ]
+  [65] call line_xdyd param-assignment [ ]
   to:line::@return
-line::@7: scope:[line]  from line::@1
-  [56] (byte) plot::x#4 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#4 ]
-  [57] (byte) plot::y#4 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#4 plot::y#4 ]
-  [58] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  to:line::@22
-line::@22: scope:[line]  from line::@7
-  [59] (byte) plot::x#5 ← (byte) line::x1#0 [ line::y1#0 plot::x#5 ]
-  [60] (byte) plot::y#5 ← (byte) line::y1#0 [ plot::x#5 plot::y#5 ]
-  [61] call plot param-assignment [ ]
+line::@10: scope:[line]  from line::@23
+  [66] (byte) line_ydxd::y#1 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 ]
+  [67] (byte) line_ydxd::x#1 ← (byte) line::x0#0 [ line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 ]
+  [68] (byte) line_ydxd::y1#1 ← (byte) line::y1#0 [ line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 ]
+  [69] (byte) line_ydxd::yd#1 ← (byte) line::yd#3 [ line::xd#0 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 ]
+  [70] (byte) line_ydxd::xd#1 ← (byte) line::xd#0 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#1 ]
+  [71] call line_ydxd param-assignment [ ]
   to:line::@return
-plot: scope:[plot]  from line::@15 line::@17 line::@19 line::@2 line::@22 line::@24 line::@3 line::@7 line_xdyi::@1
-  [62] (byte) plot::y#9 ← phi( line::@15/(byte) plot::y#6 line::@17/(byte) plot::y#1 line::@19/(byte) plot::y#3 line::@2/(byte) plot::y#0 line::@22/(byte) plot::y#5 line::@24/(byte) plot::y#7 line::@3/(byte) plot::y#2 line::@7/(byte) plot::y#4 line_xdyi::@1/(byte) plot::y#8 ) [ plot::x#9 plot::y#9 ]
-  [62] (byte) plot::x#9 ← phi( line::@15/(byte) plot::x#6 line::@17/(byte) plot::x#1 line::@19/(byte) plot::x#3 line::@2/(byte) plot::x#0 line::@22/(byte) plot::x#5 line::@24/(byte) plot::x#7 line::@3/(byte) plot::x#2 line::@7/(byte) plot::x#4 line_xdyi::@1/(byte) plot::x#8 ) [ plot::x#9 plot::y#9 ]
-  [63] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::$0 ]
-  [64] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#9 plot::y#9 plot::plotter_x#1 ]
-  [65] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::plotter_x#1 plot::$1 ]
-  [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ]
-  [67] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::$2 ]
-  [68] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::plotter_y#1 ]
-  [69] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ]
-  [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ]
-  [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ]
-  [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ]
-  [73] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9 [ plot::plotter#0 plot::$5 plot::$6 ]
-  [74] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ]
-  [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ]
+line::@9: scope:[line]  from line::@1
+  [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ]
+  [73] if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ]
+  to:line::@27
+line::@27: scope:[line]  from line::@9
+  [74] (byte) line_xdyi::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#10 line_xdyi::x#1 ]
+  [75] (byte) line_xdyi::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 ]
+  [76] (byte) line_xdyi::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 ]
+  [77] (byte) line_xdyi::xd#1 ← (byte) line::xd#0 [ line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 ]
+  [78] (byte) line_xdyi::yd#1 ← (byte) line::yd#10 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#1 ]
+  [79] call line_xdyi param-assignment [ ]
+  to:line::@return
+line::@13: scope:[line]  from line::@9
+  [80] (byte) line_ydxi::y#1 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 ]
+  [81] (byte) line_ydxi::x#1 ← (byte) line::x1#0 [ line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 ]
+  [82] (byte) line_ydxi::y1#1 ← (byte) line::y0#0 [ line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 ]
+  [83] (byte) line_ydxi::yd#1 ← (byte) line::yd#10 [ line::xd#0 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 ]
+  [84] (byte) line_ydxi::xd#1 ← (byte) line::xd#0 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#1 ]
+  [85] call line_ydxi param-assignment [ ]
+  to:line::@return
+line_ydxi: scope:[line_ydxi]  from line::@13 line::@3
+  [86] (byte) line_ydxi::y1#6 ← phi( line::@13/(byte) line_ydxi::y1#1 line::@3/(byte) line_ydxi::y1#0 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [86] (byte) line_ydxi::yd#5 ← phi( line::@13/(byte) line_ydxi::yd#1 line::@3/(byte) line_ydxi::yd#0 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [86] (byte) line_ydxi::y#6 ← phi( line::@13/(byte) line_ydxi::y#1 line::@3/(byte) line_ydxi::y#0 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [86] (byte) line_ydxi::x#5 ← phi( line::@13/(byte) line_ydxi::x#1 line::@3/(byte) line_ydxi::x#0 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [86] (byte) line_ydxi::xd#2 ← phi( line::@13/(byte) line_ydxi::xd#1 line::@3/(byte) line_ydxi::xd#0 ) [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 ]
+  [87] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ]
+  to:line_ydxi::@1
+line_ydxi::@1: scope:[line_ydxi]  from line_ydxi line_ydxi::@2
+  [88] (byte) line_ydxi::e#3 ← phi( line_ydxi/(byte) line_ydxi::e#0 line_ydxi::@2/(byte) line_ydxi::e#6 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  [88] (byte) line_ydxi::y#3 ← phi( line_ydxi/(byte) line_ydxi::y#6 line_ydxi::@2/(byte) line_ydxi::y#2 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  [88] (byte) line_ydxi::x#3 ← phi( line_ydxi/(byte) line_ydxi::x#5 line_ydxi::@2/(byte) line_ydxi::x#6 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  [89] (byte) plot::x#2 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 ]
+  [90] (byte) plot::y#2 ← (byte) line_ydxi::y#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 plot::y#2 ]
+  [91] call plot param-assignment [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  to:line_ydxi::@5
+line_ydxi::@5: scope:[line_ydxi]  from line_ydxi::@1
+  [92] (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::e#3 line_ydxi::y#2 ]
+  [93] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ]
+  [94] if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ]
+  to:line_ydxi::@3
+line_ydxi::@3: scope:[line_ydxi]  from line_ydxi::@5
+  [95] (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#2 ]
+  [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ]
+  to:line_ydxi::@2
+line_ydxi::@2: scope:[line_ydxi]  from line_ydxi::@3 line_ydxi::@5
+  [97] (byte) line_ydxi::e#6 ← phi( line_ydxi::@3/(byte) line_ydxi::e#2 line_ydxi::@5/(byte) line_ydxi::e#1 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ]
+  [97] (byte) line_ydxi::x#6 ← phi( line_ydxi::@3/(byte) line_ydxi::x#2 line_ydxi::@5/(byte) line_ydxi::x#3 ) [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ]
+  [98] (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 line_ydxi::$8 ]
+  [99] if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ]
+  to:line_ydxi::@return
+line_ydxi::@return: scope:[line_ydxi]  from line_ydxi::@2
+  [100] return  [ ]
+  to:@return
+plot: scope:[plot]  from line_xdyd::@1 line_xdyi::@1 line_ydxd::@1 line_ydxi::@1
+  [101] (byte) plot::y#4 ← phi( line_xdyd::@1/(byte) plot::y#1 line_xdyi::@1/(byte) plot::y#0 line_ydxd::@1/(byte) plot::y#3 line_ydxi::@1/(byte) plot::y#2 ) [ plot::x#4 plot::y#4 ]
+  [101] (byte) plot::x#4 ← phi( line_xdyd::@1/(byte) plot::x#1 line_xdyi::@1/(byte) plot::x#0 line_ydxd::@1/(byte) plot::x#3 line_ydxi::@1/(byte) plot::x#2 ) [ plot::x#4 plot::y#4 ]
+  [102] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::$0 ]
+  [103] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#4 plot::y#4 plot::plotter_x#1 ]
+  [104] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::plotter_x#1 plot::$1 ]
+  [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ]
+  [106] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::$2 ]
+  [107] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::plotter_y#1 ]
+  [108] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ]
+  [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ]
+  [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ]
+  [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ]
+  [112] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4 [ plot::plotter#0 plot::$5 plot::$6 ]
+  [113] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ]
+  [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ]
   to:plot::@return
 plot::@return: scope:[plot]  from plot
-  [76] return  [ ]
+  [115] return  [ ]
   to:@return
-line_xdyi: scope:[line_xdyi]  from line::@11
-  [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ]
+line_xdyi: scope:[line_xdyi]  from line::@17 line::@27
+  [116] (byte) line_xdyi::x1#6 ← phi( line::@17/(byte) line_xdyi::x1#0 line::@27/(byte) line_xdyi::x1#1 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [116] (byte) line_xdyi::xd#5 ← phi( line::@17/(byte) line_xdyi::xd#0 line::@27/(byte) line_xdyi::xd#1 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [116] (byte) line_xdyi::y#5 ← phi( line::@17/(byte) line_xdyi::y#0 line::@27/(byte) line_xdyi::y#1 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [116] (byte) line_xdyi::x#6 ← phi( line::@17/(byte) line_xdyi::x#0 line::@27/(byte) line_xdyi::x#1 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [116] (byte) line_xdyi::yd#2 ← phi( line::@17/(byte) line_xdyi::yd#0 line::@27/(byte) line_xdyi::yd#1 ) [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 ]
+  [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ]
   to:line_xdyi::@1
 line_xdyi::@1: scope:[line_xdyi]  from line_xdyi line_xdyi::@2
-  [78] (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [78] (byte) line_xdyi::y#2 ← phi( line_xdyi/(byte) line_xdyi::y#0 line_xdyi::@2/(byte) line_xdyi::y#5 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [78] (byte) line_xdyi::x#2 ← phi( line_xdyi/(byte) line_xdyi::x#0 line_xdyi::@2/(byte) line_xdyi::x#1 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [79] (byte) plot::x#8 ← (byte) line_xdyi::x#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [80] (byte) plot::y#8 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 plot::y#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  [81] call plot param-assignment [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
+  [118] (byte) line_xdyi::e#3 ← phi( line_xdyi/(byte) line_xdyi::e#0 line_xdyi::@2/(byte) line_xdyi::e#6 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [118] (byte) line_xdyi::y#3 ← phi( line_xdyi/(byte) line_xdyi::y#5 line_xdyi::@2/(byte) line_xdyi::y#6 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [118] (byte) line_xdyi::x#3 ← phi( line_xdyi/(byte) line_xdyi::x#6 line_xdyi::@2/(byte) line_xdyi::x#2 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [119] (byte) plot::x#0 ← (byte) line_xdyi::x#3 [ plot::x#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [120] (byte) plot::y#0 ← (byte) line_xdyi::y#3 [ plot::x#0 plot::y#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  [121] call plot param-assignment [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
   to:line_xdyi::@5
 line_xdyi::@5: scope:[line_xdyi]  from line_xdyi::@1
-  [82] (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::e#3 line_xdyi::x#1 ]
-  [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ]
-  [84] if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ]
+  [122] (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::e#3 line_xdyi::x#2 ]
+  [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ]
+  [124] if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ]
   to:line_xdyi::@3
 line_xdyi::@3: scope:[line_xdyi]  from line_xdyi::@5
-  [85] (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#1 ]
-  [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ]
+  [125] (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#2 ]
+  [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ]
   to:line_xdyi::@2
 line_xdyi::@2: scope:[line_xdyi]  from line_xdyi::@3 line_xdyi::@5
-  [87] (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ]
-  [87] (byte) line_xdyi::y#5 ← phi( line_xdyi::@3/(byte) line_xdyi::y#1 line_xdyi::@5/(byte) line_xdyi::y#2 ) [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ]
-  [88] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 line_xdyi::$8 ]
-  [89] if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ]
+  [127] (byte) line_xdyi::e#6 ← phi( line_xdyi::@3/(byte) line_xdyi::e#2 line_xdyi::@5/(byte) line_xdyi::e#1 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ]
+  [127] (byte) line_xdyi::y#6 ← phi( line_xdyi::@3/(byte) line_xdyi::y#2 line_xdyi::@5/(byte) line_xdyi::y#3 ) [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ]
+  [128] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 line_xdyi::$8 ]
+  [129] if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ]
   to:line_xdyi::@return
 line_xdyi::@return: scope:[line_xdyi]  from line_xdyi::@2
-  [90] return  [ ]
+  [130] return  [ ]
+  to:@return
+line_ydxd: scope:[line_ydxd]  from line::@10 line::@6
+  [131] (byte) line_ydxd::y1#6 ← phi( line::@10/(byte) line_ydxd::y1#1 line::@6/(byte) line_ydxd::y1#0 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [131] (byte) line_ydxd::yd#5 ← phi( line::@10/(byte) line_ydxd::yd#1 line::@6/(byte) line_ydxd::yd#0 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [131] (byte) line_ydxd::y#6 ← phi( line::@10/(byte) line_ydxd::y#1 line::@6/(byte) line_ydxd::y#0 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [131] (byte) line_ydxd::x#5 ← phi( line::@10/(byte) line_ydxd::x#1 line::@6/(byte) line_ydxd::x#0 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [131] (byte) line_ydxd::xd#2 ← phi( line::@10/(byte) line_ydxd::xd#1 line::@6/(byte) line_ydxd::xd#0 ) [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 ]
+  [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ]
+  to:line_ydxd::@1
+line_ydxd::@1: scope:[line_ydxd]  from line_ydxd line_ydxd::@2
+  [133] (byte) line_ydxd::e#3 ← phi( line_ydxd/(byte) line_ydxd::e#0 line_ydxd::@2/(byte) line_ydxd::e#6 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [133] (byte) line_ydxd::y#3 ← phi( line_ydxd/(byte) line_ydxd::y#6 line_ydxd::@2/(byte) line_ydxd::y#2 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [133] (byte) line_ydxd::x#3 ← phi( line_ydxd/(byte) line_ydxd::x#5 line_ydxd::@2/(byte) line_ydxd::x#6 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [134] (byte) plot::x#3 ← (byte) line_ydxd::x#3 [ plot::x#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [135] (byte) plot::y#3 ← (byte) line_ydxd::y#3 [ plot::x#3 plot::y#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  [136] call plot param-assignment [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  to:line_ydxd::@5
+line_ydxd::@5: scope:[line_ydxd]  from line_ydxd::@1
+  [137] (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::e#3 line_ydxd::y#2 ]
+  [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ]
+  [139] if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ]
+  to:line_ydxd::@3
+line_ydxd::@3: scope:[line_ydxd]  from line_ydxd::@5
+  [140] (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#2 ]
+  [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ]
+  to:line_ydxd::@2
+line_ydxd::@2: scope:[line_ydxd]  from line_ydxd::@3 line_ydxd::@5
+  [142] (byte) line_ydxd::e#6 ← phi( line_ydxd::@3/(byte) line_ydxd::e#2 line_ydxd::@5/(byte) line_ydxd::e#1 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ]
+  [142] (byte) line_ydxd::x#6 ← phi( line_ydxd::@3/(byte) line_ydxd::x#2 line_ydxd::@5/(byte) line_ydxd::x#3 ) [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ]
+  [143] (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 line_ydxd::$8 ]
+  [144] if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ]
+  to:line_ydxd::@return
+line_ydxd::@return: scope:[line_ydxd]  from line_ydxd::@2
+  [145] return  [ ]
+  to:@return
+line_xdyd: scope:[line_xdyd]  from line::@20 line::@24
+  [146] (byte) line_xdyd::x1#6 ← phi( line::@20/(byte) line_xdyd::x1#0 line::@24/(byte) line_xdyd::x1#1 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [146] (byte) line_xdyd::xd#5 ← phi( line::@20/(byte) line_xdyd::xd#0 line::@24/(byte) line_xdyd::xd#1 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [146] (byte) line_xdyd::y#5 ← phi( line::@20/(byte) line_xdyd::y#0 line::@24/(byte) line_xdyd::y#1 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [146] (byte) line_xdyd::x#6 ← phi( line::@20/(byte) line_xdyd::x#0 line::@24/(byte) line_xdyd::x#1 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [146] (byte) line_xdyd::yd#2 ← phi( line::@20/(byte) line_xdyd::yd#0 line::@24/(byte) line_xdyd::yd#1 ) [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 ]
+  [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ]
+  to:line_xdyd::@1
+line_xdyd::@1: scope:[line_xdyd]  from line_xdyd line_xdyd::@2
+  [148] (byte) line_xdyd::e#3 ← phi( line_xdyd/(byte) line_xdyd::e#0 line_xdyd::@2/(byte) line_xdyd::e#6 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [148] (byte) line_xdyd::y#3 ← phi( line_xdyd/(byte) line_xdyd::y#5 line_xdyd::@2/(byte) line_xdyd::y#6 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [148] (byte) line_xdyd::x#3 ← phi( line_xdyd/(byte) line_xdyd::x#6 line_xdyd::@2/(byte) line_xdyd::x#2 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [149] (byte) plot::x#1 ← (byte) line_xdyd::x#3 [ plot::x#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [150] (byte) plot::y#1 ← (byte) line_xdyd::y#3 [ plot::x#1 plot::y#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  [151] call plot param-assignment [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  to:line_xdyd::@5
+line_xdyd::@5: scope:[line_xdyd]  from line_xdyd::@1
+  [152] (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::e#3 line_xdyd::x#2 ]
+  [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ]
+  [154] if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ]
+  to:line_xdyd::@3
+line_xdyd::@3: scope:[line_xdyd]  from line_xdyd::@5
+  [155] (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#2 ]
+  [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ]
+  to:line_xdyd::@2
+line_xdyd::@2: scope:[line_xdyd]  from line_xdyd::@3 line_xdyd::@5
+  [157] (byte) line_xdyd::e#6 ← phi( line_xdyd::@3/(byte) line_xdyd::e#2 line_xdyd::@5/(byte) line_xdyd::e#1 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ]
+  [157] (byte) line_xdyd::y#6 ← phi( line_xdyd::@3/(byte) line_xdyd::y#2 line_xdyd::@5/(byte) line_xdyd::y#3 ) [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ]
+  [158] (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 line_xdyd::$8 ]
+  [159] if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ]
+  to:line_xdyd::@return
+line_xdyd::@return: scope:[line_xdyd]  from line_xdyd::@2
+  [160] return  [ ]
   to:@return
 init_plot_tables: scope:[init_plot_tables]  from main::@3
-  [91] phi() [ ]
+  [161] phi() [ ]
   to:init_plot_tables::@1
 init_plot_tables::@1: scope:[init_plot_tables]  from init_plot_tables init_plot_tables::@2
-  [92] (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) 128 init_plot_tables::@2/(byte) init_plot_tables::bit#4 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [92] (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) 0 init_plot_tables::@2/(byte) init_plot_tables::x#1 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ]
-  [94] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
-  [97] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ]
-  [98] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ]
+  [162] (byte) init_plot_tables::bit#3 ← phi( init_plot_tables/(byte) 128 init_plot_tables::@2/(byte) init_plot_tables::bit#4 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [162] (byte) init_plot_tables::x#2 ← phi( init_plot_tables/(byte) 0 init_plot_tables::@2/(byte) init_plot_tables::x#1 ) [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ]
+  [164] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ]
+  [167] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ]
+  [168] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ]
   to:init_plot_tables::@2
 init_plot_tables::@2: scope:[init_plot_tables]  from init_plot_tables::@1 init_plot_tables::@10
-  [99] (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@10/(byte) init_plot_tables::bit#1 init_plot_tables::@1/(byte) 128 ) [ init_plot_tables::x#2 init_plot_tables::bit#4 ]
-  [100] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ]
-  [101] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ]
+  [169] (byte) init_plot_tables::bit#4 ← phi( init_plot_tables::@10/(byte) init_plot_tables::bit#1 init_plot_tables::@1/(byte) 128 ) [ init_plot_tables::x#2 init_plot_tables::bit#4 ]
+  [170] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ]
+  [171] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ]
   to:init_plot_tables::@3
 init_plot_tables::@3: scope:[init_plot_tables]  from init_plot_tables::@2 init_plot_tables::@4
-  [102] (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [102] (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ]
-  [104] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ]
-  [105] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ]
-  [106] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ]
-  [108] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
-  [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ]
-  [110] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [172] (byte*) init_plot_tables::yoffs#2 ← phi( init_plot_tables::@4/(byte*) init_plot_tables::yoffs#4 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [172] (byte) init_plot_tables::y#2 ← phi( init_plot_tables::@4/(byte) init_plot_tables::y#1 init_plot_tables::@2/(byte) 0 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ]
+  [174] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ]
+  [175] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ]
+  [176] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ]
+  [178] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
+  [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ]
+  [180] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ]
   to:init_plot_tables::@7
 init_plot_tables::@7: scope:[init_plot_tables]  from init_plot_tables::@3
-  [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ]
+  [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ]
   to:init_plot_tables::@4
 init_plot_tables::@4: scope:[init_plot_tables]  from init_plot_tables::@3 init_plot_tables::@7
-  [112] (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 init_plot_tables::@7/(byte*) init_plot_tables::yoffs#1 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#4 ]
-  [113] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ]
-  [114] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ]
+  [182] (byte*) init_plot_tables::yoffs#4 ← phi( init_plot_tables::@3/(byte*) init_plot_tables::yoffs#2 init_plot_tables::@7/(byte*) init_plot_tables::yoffs#1 ) [ init_plot_tables::y#2 init_plot_tables::yoffs#4 ]
+  [183] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ]
+  [184] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ]
   to:init_plot_tables::@return
 init_plot_tables::@return: scope:[init_plot_tables]  from init_plot_tables::@4
-  [115] return  [ ]
+  [185] return  [ ]
   to:@return
 init_plot_tables::@10: scope:[init_plot_tables]  from init_plot_tables::@1
   to:init_plot_tables::@2
 init_screen: scope:[init_screen]  from main
-  [116] phi() [ ]
+  [186] phi() [ ]
   to:init_screen::@1
 init_screen::@1: scope:[init_screen]  from init_screen init_screen::@1
-  [117] (byte*) init_screen::b#2 ← phi( init_screen/(const byte*) BITMAP#0 init_screen::@1/(byte*) init_screen::b#1 ) [ init_screen::b#2 ]
-  [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ]
-  [119] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ]
-  [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ]
+  [187] (byte*) init_screen::b#2 ← phi( init_screen/(const byte*) BITMAP#0 init_screen::@1/(byte*) init_screen::b#1 ) [ init_screen::b#2 ]
+  [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ]
+  [189] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ]
+  [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ]
   to:init_screen::@2
 init_screen::@2: scope:[init_screen]  from init_screen::@1 init_screen::@2
-  [121] (byte*) init_screen::c#2 ← phi( init_screen::@2/(byte*) init_screen::c#1 init_screen::@1/(const byte*) SCREEN#0 ) [ init_screen::c#2 ]
-  [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ]
-  [123] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ]
-  [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ]
+  [191] (byte*) init_screen::c#2 ← phi( init_screen::@2/(byte*) init_screen::c#1 init_screen::@1/(const byte*) SCREEN#0 ) [ init_screen::c#2 ]
+  [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ]
+  [193] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ]
+  [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ]
   to:init_screen::@return
 init_screen::@return: scope:[init_screen]  from init_screen::@2
-  [125] return  [ ]
+  [195] return  [ ]
   to:@return
 
 DOMINATORS
 @begin dominated by  @begin 
-@7 dominated by  @begin @7 
-@end dominated by  @begin @7 @end 
-main dominated by  @begin @7 main 
-main::@3 dominated by  @begin @7 main::@3 main 
-main::@1 dominated by  @begin @7 main::@1 main::@3 main 
-main::@5 dominated by  @begin @7 main::@1 main::@3 main::@5 main 
-main::@return dominated by  @begin @7 main::@1 main::@3 main::@5 main main::@return 
-lines dominated by  @begin @7 main::@1 main::@3 main lines 
-lines::@1 dominated by  @begin @7 main::@1 main::@3 lines::@1 main lines 
-lines::@3 dominated by  @begin @7 main::@1 main::@3 lines::@3 lines::@1 main lines 
-lines::@return dominated by  @begin @7 main::@1 main::@3 lines::@return lines::@3 lines::@1 main lines 
-line dominated by  @begin @7 line main::@1 main::@3 lines::@1 main lines 
-line::@9 dominated by  @begin @7 line main::@1 main::@3 line::@9 lines::@1 main lines 
-line::@10 dominated by  @begin @7 line main::@1 main::@3 line::@10 lines::@1 main line::@9 lines 
-line::@11 dominated by  @begin @7 line main::@1 main::@3 line::@10 line::@11 lines::@1 main line::@9 lines 
-line::@return dominated by  @begin @7 line main::@1 main::@3 line::@return lines::@1 main lines 
-line::@3 dominated by  @begin @7 line main::@1 main::@3 line::@3 line::@10 lines::@1 main line::@9 lines 
-line::@19 dominated by  @begin @7 line main::@1 main::@3 line::@3 line::@10 lines::@1 main line::@9 line::@19 lines 
-line::@2 dominated by  @begin @7 line main::@1 main::@3 line::@2 lines::@1 main line::@9 lines 
-line::@17 dominated by  @begin @7 line main::@1 main::@3 line::@2 lines::@1 main line::@9 line::@17 lines 
-line::@1 dominated by  @begin @7 line main::@1 main::@3 line::@1 lines::@1 main lines 
-line::@15 dominated by  @begin @7 line main::@1 main::@3 line::@1 lines::@1 main line::@15 lines 
-line::@24 dominated by  @begin @7 line::@24 line main::@1 main::@3 line::@1 lines::@1 main line::@15 lines 
-line::@7 dominated by  @begin @7 line main::@1 main::@3 line::@1 line::@7 lines::@1 main lines 
-line::@22 dominated by  @begin @7 line line::@22 main::@1 main::@3 line::@1 line::@7 lines::@1 main lines 
-plot dominated by  @begin @7 line main::@1 main::@3 plot lines::@1 main lines 
-plot::@return dominated by  @begin @7 line main::@1 main::@3 plot plot::@return lines::@1 main lines 
-line_xdyi dominated by  @begin @7 line main::@1 main::@3 line_xdyi line::@10 line::@11 lines::@1 main line::@9 lines 
-line_xdyi::@1 dominated by  @begin @7 line main::@1 main::@3 line_xdyi line::@10 line::@11 lines::@1 main line::@9 line_xdyi::@1 lines 
-line_xdyi::@5 dominated by  @begin @7 line main::@1 main::@3 line_xdyi line::@10 line::@11 lines::@1 main line::@9 line_xdyi::@1 line_xdyi::@5 lines 
-line_xdyi::@3 dominated by  @begin @7 line main::@1 main::@3 line_xdyi line::@10 line::@11 lines::@1 main line::@9 line_xdyi::@1 line_xdyi::@3 line_xdyi::@5 lines 
-line_xdyi::@2 dominated by  @begin @7 line main::@1 main::@3 line_xdyi line::@10 line::@11 lines::@1 main line::@9 line_xdyi::@1 line_xdyi::@2 line_xdyi::@5 lines 
-line_xdyi::@return dominated by  @begin @7 line main::@1 main::@3 line_xdyi line::@10 line::@11 lines::@1 main line::@9 line_xdyi::@1 line_xdyi::@2 line_xdyi::@5 lines line_xdyi::@return 
-init_plot_tables dominated by  init_plot_tables @begin @7 main::@3 main 
-init_plot_tables::@1 dominated by  init_plot_tables::@1 init_plot_tables @begin @7 main::@3 main 
-init_plot_tables::@2 dominated by  init_plot_tables::@2 init_plot_tables::@1 init_plot_tables @begin @7 main::@3 main 
-init_plot_tables::@3 dominated by  init_plot_tables::@3 init_plot_tables::@2 init_plot_tables::@1 init_plot_tables @begin @7 main::@3 main 
-init_plot_tables::@7 dominated by  init_plot_tables::@3 init_plot_tables::@2 init_plot_tables::@1 init_plot_tables @begin @7 init_plot_tables::@7 main::@3 main 
-init_plot_tables::@4 dominated by  init_plot_tables::@3 init_plot_tables::@2 init_plot_tables::@1 init_plot_tables @begin @7 init_plot_tables::@4 main::@3 main 
-init_plot_tables::@return dominated by  init_plot_tables::@3 init_plot_tables::@2 init_plot_tables::@1 init_plot_tables @begin init_plot_tables::@return @7 init_plot_tables::@4 main::@3 main 
-init_plot_tables::@10 dominated by  init_plot_tables::@10 init_plot_tables::@1 init_plot_tables @begin @7 main::@3 main 
-init_screen dominated by  @begin @7 init_screen main 
-init_screen::@1 dominated by  init_screen::@1 @begin @7 init_screen main 
-init_screen::@2 dominated by  init_screen::@1 init_screen::@2 @begin @7 init_screen main 
-init_screen::@return dominated by  init_screen::@1 init_screen::@2 @begin @7 init_screen init_screen::@return main 
+@10 dominated by  @begin @10 
+@end dominated by  @end @begin @10 
+main dominated by  @begin @10 main 
+main::@3 dominated by  @begin main::@3 @10 main 
+main::@1 dominated by  @begin main::@1 main::@3 @10 main 
+main::@5 dominated by  @begin main::@1 main::@3 main::@5 @10 main 
+main::@return dominated by  main::@return @begin main::@1 main::@3 main::@5 @10 main 
+lines dominated by  lines @begin main::@1 main::@3 @10 main 
+lines::@1 dominated by  lines::@1 lines @begin main::@1 main::@3 @10 main 
+lines::@3 dominated by  lines::@3 lines::@1 lines @begin main::@1 main::@3 @10 main 
+lines::@return dominated by  lines::@3 lines::@1 lines @begin main::@1 main::@3 @10 lines::@return main 
+line dominated by  lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line::@15 dominated by  lines::@1 line::@15 lines @begin line main::@1 main::@3 @10 main 
+line::@16 dominated by  lines::@1 line::@15 line::@16 lines @begin line main::@1 main::@3 @10 main 
+line::@17 dominated by  lines::@1 line::@15 line::@16 line::@17 lines @begin line main::@1 main::@3 @10 main 
+line::@return dominated by  lines::@1 lines @begin line main::@1 main::@3 @10 line::@return main 
+line::@3 dominated by  line::@3 lines::@1 line::@15 line::@16 lines @begin line main::@1 main::@3 @10 main 
+line::@2 dominated by  line::@2 lines::@1 line::@15 lines @begin line main::@1 main::@3 @10 main 
+line::@20 dominated by  line::@2 lines::@1 line::@15 lines @begin line main::@1 line::@20 main::@3 @10 main 
+line::@6 dominated by  line::@2 line::@6 lines::@1 line::@15 lines @begin line main::@1 main::@3 @10 main 
+line::@1 dominated by  line::@1 lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line::@23 dominated by  line::@1 lines::@1 lines @begin line line::@23 main::@1 main::@3 @10 main 
+line::@24 dominated by  line::@1 lines::@1 lines @begin line::@24 line line::@23 main::@1 main::@3 @10 main 
+line::@10 dominated by  line::@1 line::@10 lines::@1 lines @begin line line::@23 main::@1 main::@3 @10 main 
+line::@9 dominated by  line::@1 line::@9 lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line::@27 dominated by  line::@1 lines::@1 line::@9 lines @begin line main::@1 main::@3 line::@27 @10 main 
+line::@13 dominated by  line::@1 line::@13 lines::@1 line::@9 lines @begin line main::@1 main::@3 @10 main 
+line_ydxi dominated by  line_ydxi lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line_ydxi::@1 dominated by  line_ydxi line_ydxi::@1 lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line_ydxi::@5 dominated by  line_ydxi line_ydxi::@1 line_ydxi::@5 lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line_ydxi::@3 dominated by  line_ydxi line_ydxi::@1 line_ydxi::@3 line_ydxi::@5 lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line_ydxi::@2 dominated by  line_ydxi line_ydxi::@2 line_ydxi::@1 line_ydxi::@5 lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line_ydxi::@return dominated by  line_ydxi line_ydxi::@2 line_ydxi::@1 line_ydxi::@5 lines::@1 lines line_ydxi::@return @begin line main::@1 main::@3 @10 main 
+plot dominated by  lines::@1 lines @begin line main::@1 main::@3 plot @10 main 
+plot::@return dominated by  plot::@return lines::@1 lines @begin line main::@1 main::@3 plot @10 main 
+line_xdyi dominated by  lines::@1 lines @begin line main::@1 main::@3 line_xdyi @10 main 
+line_xdyi::@1 dominated by  lines::@1 line_xdyi::@1 lines @begin line main::@1 main::@3 line_xdyi @10 main 
+line_xdyi::@5 dominated by  lines::@1 line_xdyi::@1 line_xdyi::@5 lines @begin line main::@1 main::@3 line_xdyi @10 main 
+line_xdyi::@3 dominated by  lines::@1 line_xdyi::@1 line_xdyi::@3 line_xdyi::@5 lines @begin line main::@1 main::@3 line_xdyi @10 main 
+line_xdyi::@2 dominated by  lines::@1 line_xdyi::@1 line_xdyi::@2 line_xdyi::@5 lines @begin line main::@1 main::@3 line_xdyi @10 main 
+line_xdyi::@return dominated by  lines::@1 line_xdyi::@1 line_xdyi::@2 line_xdyi::@5 lines @begin line main::@1 main::@3 line_xdyi @10 main line_xdyi::@return 
+line_ydxd dominated by  line_ydxd lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line_ydxd::@1 dominated by  line_ydxd line_ydxd::@1 lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line_ydxd::@5 dominated by  line_ydxd::@5 line_ydxd line_ydxd::@1 lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line_ydxd::@3 dominated by  line_ydxd::@3 line_ydxd::@5 line_ydxd line_ydxd::@1 lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line_ydxd::@2 dominated by  line_ydxd::@2 line_ydxd::@5 line_ydxd line_ydxd::@1 lines::@1 lines @begin line main::@1 main::@3 @10 main 
+line_ydxd::@return dominated by  line_ydxd::@2 line_ydxd::@5 line_ydxd line_ydxd::@1 lines::@1 lines @begin line main::@1 main::@3 @10 main line_ydxd::@return 
+line_xdyd dominated by  lines::@1 lines @begin line main::@1 main::@3 line_xdyd @10 main 
+line_xdyd::@1 dominated by  lines::@1 lines @begin line main::@1 main::@3 line_xdyd @10 line_xdyd::@1 main 
+line_xdyd::@5 dominated by  lines::@1 lines @begin line main::@1 main::@3 line_xdyd @10 line_xdyd::@5 line_xdyd::@1 main 
+line_xdyd::@3 dominated by  lines::@1 lines @begin line main::@1 main::@3 line_xdyd @10 line_xdyd::@5 line_xdyd::@3 line_xdyd::@1 main 
+line_xdyd::@2 dominated by  lines::@1 lines @begin line main::@1 main::@3 line_xdyd @10 line_xdyd::@5 line_xdyd::@2 line_xdyd::@1 main 
+line_xdyd::@return dominated by  lines::@1 line_xdyd::@return lines @begin line main::@1 main::@3 line_xdyd @10 line_xdyd::@5 line_xdyd::@2 line_xdyd::@1 main 
+init_plot_tables dominated by  init_plot_tables @begin main::@3 @10 main 
+init_plot_tables::@1 dominated by  init_plot_tables::@1 init_plot_tables @begin main::@3 @10 main 
+init_plot_tables::@2 dominated by  init_plot_tables::@2 init_plot_tables::@1 init_plot_tables @begin main::@3 @10 main 
+init_plot_tables::@3 dominated by  init_plot_tables::@3 init_plot_tables::@2 init_plot_tables::@1 init_plot_tables @begin main::@3 @10 main 
+init_plot_tables::@7 dominated by  init_plot_tables::@3 init_plot_tables::@2 init_plot_tables::@1 init_plot_tables init_plot_tables::@7 @begin main::@3 @10 main 
+init_plot_tables::@4 dominated by  init_plot_tables::@3 init_plot_tables::@2 init_plot_tables::@1 init_plot_tables init_plot_tables::@4 @begin main::@3 @10 main 
+init_plot_tables::@return dominated by  init_plot_tables::@3 init_plot_tables::@2 init_plot_tables::@1 init_plot_tables init_plot_tables::@return init_plot_tables::@4 @begin main::@3 @10 main 
+init_plot_tables::@10 dominated by  init_plot_tables::@10 init_plot_tables::@1 init_plot_tables @begin main::@3 @10 main 
+init_screen dominated by  init_screen @begin @10 main 
+init_screen::@1 dominated by  init_screen::@1 init_screen @begin @10 main 
+init_screen::@2 dominated by  init_screen::@1 init_screen::@2 init_screen @begin @10 main 
+init_screen::@return dominated by  init_screen::@1 init_screen::@2 init_screen @begin init_screen::@return @10 main 
 
 Found back edge: Loop head: main::@1 tails: main::@5 blocks: null
 Found back edge: Loop head: lines::@1 tails: lines::@3 blocks: null
+Found back edge: Loop head: line_ydxi::@1 tails: line_ydxi::@2 blocks: null
 Found back edge: Loop head: line_xdyi::@1 tails: line_xdyi::@2 blocks: null
+Found back edge: Loop head: line_ydxd::@1 tails: line_ydxd::@2 blocks: null
+Found back edge: Loop head: line_xdyd::@1 tails: line_xdyd::@2 blocks: null
 Found back edge: Loop head: init_plot_tables::@1 tails: init_plot_tables::@2 blocks: null
 Found back edge: Loop head: init_plot_tables::@3 tails: init_plot_tables::@4 blocks: null
 Found back edge: Loop head: init_screen::@1 tails: init_screen::@1 blocks: null
 Found back edge: Loop head: init_screen::@2 tails: init_screen::@2 blocks: null
 Populated: Loop head: main::@1 tails: main::@5 blocks: main::@5 main::@1 
 Populated: Loop head: lines::@1 tails: lines::@3 blocks: lines::@3 lines::@1 
+Populated: Loop head: line_ydxi::@1 tails: line_ydxi::@2 blocks: line_ydxi::@2 line_ydxi::@3 line_ydxi::@5 line_ydxi::@1 
 Populated: Loop head: line_xdyi::@1 tails: line_xdyi::@2 blocks: line_xdyi::@2 line_xdyi::@3 line_xdyi::@5 line_xdyi::@1 
+Populated: Loop head: line_ydxd::@1 tails: line_ydxd::@2 blocks: line_ydxd::@2 line_ydxd::@3 line_ydxd::@5 line_ydxd::@1 
+Populated: Loop head: line_xdyd::@1 tails: line_xdyd::@2 blocks: line_xdyd::@2 line_xdyd::@3 line_xdyd::@5 line_xdyd::@1 
 Populated: Loop head: init_plot_tables::@1 tails: init_plot_tables::@2 blocks: init_plot_tables::@2 init_plot_tables::@1 init_plot_tables::@10 
 Populated: Loop head: init_plot_tables::@3 tails: init_plot_tables::@4 blocks: init_plot_tables::@4 init_plot_tables::@3 init_plot_tables::@7 
 Populated: Loop head: init_screen::@1 tails: init_screen::@1 blocks: init_screen::@1 
@@ -9677,7 +15068,10 @@ Populated: Loop head: init_screen::@2 tails: init_screen::@2 blocks: init_screen
 NATURAL LOOPS
 Loop head: main::@1 tails: main::@5 blocks: main::@5 main::@1 
 Loop head: lines::@1 tails: lines::@3 blocks: lines::@3 lines::@1 
+Loop head: line_ydxi::@1 tails: line_ydxi::@2 blocks: line_ydxi::@2 line_ydxi::@3 line_ydxi::@5 line_ydxi::@1 
 Loop head: line_xdyi::@1 tails: line_xdyi::@2 blocks: line_xdyi::@2 line_xdyi::@3 line_xdyi::@5 line_xdyi::@1 
+Loop head: line_ydxd::@1 tails: line_ydxd::@2 blocks: line_ydxd::@2 line_ydxd::@3 line_ydxd::@5 line_ydxd::@1 
+Loop head: line_xdyd::@1 tails: line_xdyd::@2 blocks: line_xdyd::@2 line_xdyd::@3 line_xdyd::@5 line_xdyd::@1 
 Loop head: init_plot_tables::@1 tails: init_plot_tables::@2 blocks: init_plot_tables::@2 init_plot_tables::@1 init_plot_tables::@10 
 Loop head: init_plot_tables::@3 tails: init_plot_tables::@4 blocks: init_plot_tables::@4 init_plot_tables::@3 init_plot_tables::@7 
 Loop head: init_screen::@1 tails: init_screen::@1 blocks: init_screen::@1 
@@ -9697,11 +15091,20 @@ Found 1 loops in scope [lines]
 Found 0 loops in scope [line]
 Found 1 loops in scope [line_xdyi]
   Loop head: line_xdyi::@1 tails: line_xdyi::@2 blocks: line_xdyi::@2 line_xdyi::@3 line_xdyi::@5 line_xdyi::@1 
+Found 1 loops in scope [line_ydxi]
+  Loop head: line_ydxi::@1 tails: line_ydxi::@2 blocks: line_ydxi::@2 line_ydxi::@3 line_ydxi::@5 line_ydxi::@1 
+Found 1 loops in scope [line_xdyd]
+  Loop head: line_xdyd::@1 tails: line_xdyd::@2 blocks: line_xdyd::@2 line_xdyd::@3 line_xdyd::@5 line_xdyd::@1 
+Found 1 loops in scope [line_ydxd]
+  Loop head: line_ydxd::@1 tails: line_ydxd::@2 blocks: line_ydxd::@2 line_ydxd::@3 line_ydxd::@5 line_ydxd::@1 
 Found 0 loops in scope [plot]
 NATURAL LOOPS WITH DEPTH
 Loop head: main::@1 tails: main::@5 blocks: main::@5 main::@1  depth: 1
 Loop head: lines::@1 tails: lines::@3 blocks: lines::@3 lines::@1  depth: 2
+Loop head: line_ydxi::@1 tails: line_ydxi::@2 blocks: line_ydxi::@2 line_ydxi::@3 line_ydxi::@5 line_ydxi::@1  depth: 1
 Loop head: line_xdyi::@1 tails: line_xdyi::@2 blocks: line_xdyi::@2 line_xdyi::@3 line_xdyi::@5 line_xdyi::@1  depth: 1
+Loop head: line_ydxd::@1 tails: line_ydxd::@2 blocks: line_ydxd::@2 line_ydxd::@3 line_ydxd::@5 line_ydxd::@1  depth: 1
+Loop head: line_xdyd::@1 tails: line_xdyd::@2 blocks: line_xdyd::@2 line_xdyd::@3 line_xdyd::@5 line_xdyd::@1  depth: 1
 Loop head: init_plot_tables::@1 tails: init_plot_tables::@2 blocks: init_plot_tables::@2 init_plot_tables::@1 init_plot_tables::@10  depth: 1
 Loop head: init_plot_tables::@3 tails: init_plot_tables::@4 blocks: init_plot_tables::@4 init_plot_tables::@3 init_plot_tables::@7  depth: 1
 Loop head: init_screen::@1 tails: init_screen::@1 blocks: init_screen::@1  depth: 1
@@ -9755,18 +15158,54 @@ VARIABLE REGISTER WEIGHTS
 (byte*) init_screen::c#2 16.5
 (void()) line((byte) line::x0 , (byte) line::x1 , (byte) line::y0 , (byte) line::y1)
 (byte) line::x0
-(byte) line::x0#0 10.636363636363635
+(byte) line::x0#0 5.173913043478264
 (byte) line::x1
-(byte) line::x1#0 4.874999999999997
+(byte) line::x1#0 5.409090909090908
 (byte) line::xd
-(byte) line::xd#0 20.0
-(byte) line::xd#1 0.8571428571428571
+(byte) line::xd#0 0.7
+(byte) line::xd#1 0.7
 (byte) line::y0
-(byte) line::y0#0 8.357142857142858
+(byte) line::y0#0 5.952380952380948
 (byte) line::y1
-(byte) line::y1#0 4.791666666666664
+(byte) line::y1#0 6.249999999999996
 (byte) line::yd
-(byte) line::yd#0 1.0
+(byte) line::yd#0 0.8888888888888888
+(byte) line::yd#1 0.8888888888888888
+(byte) line::yd#10 0.8888888888888888
+(byte) line::yd#3 0.8888888888888888
+(void()) line_xdyd((byte) line_xdyd::x , (byte) line_xdyd::y , (byte) line_xdyd::x1 , (byte) line_xdyd::xd , (byte) line_xdyd::yd)
+(byte~) line_xdyd::$8 22.0
+(byte) line_xdyd::e
+(byte) line_xdyd::e#0 4.0
+(byte) line_xdyd::e#1 14.666666666666666
+(byte) line_xdyd::e#2 22.0
+(byte) line_xdyd::e#3 4.800000000000001
+(byte) line_xdyd::e#6 11.0
+(byte) line_xdyd::x
+(byte) line_xdyd::x#0 0.8
+(byte) line_xdyd::x#1 0.8
+(byte) line_xdyd::x#2 4.125
+(byte) line_xdyd::x#3 8.75
+(byte) line_xdyd::x#6 3.0
+(byte) line_xdyd::x1
+(byte) line_xdyd::x1#0 1.3333333333333333
+(byte) line_xdyd::x1#1 1.3333333333333333
+(byte) line_xdyd::x1#6 1.0714285714285714
+(byte) line_xdyd::xd
+(byte) line_xdyd::xd#0 2.0
+(byte) line_xdyd::xd#1 2.0
+(byte) line_xdyd::xd#5 1.8571428571428572
+(byte) line_xdyd::y
+(byte) line_xdyd::y#0 1.0
+(byte) line_xdyd::y#1 1.0
+(byte) line_xdyd::y#2 11.0
+(byte) line_xdyd::y#3 6.571428571428571
+(byte) line_xdyd::y#5 3.0
+(byte) line_xdyd::y#6 11.0
+(byte) line_xdyd::yd
+(byte) line_xdyd::yd#0 4.0
+(byte) line_xdyd::yd#1 4.0
+(byte) line_xdyd::yd#2 1.2142857142857142
 (void()) line_xdyi((byte) line_xdyi::x , (byte) line_xdyi::y , (byte) line_xdyi::x1 , (byte) line_xdyi::xd , (byte) line_xdyi::yd)
 (byte~) line_xdyi::$8 22.0
 (byte) line_xdyi::e
@@ -9776,20 +15215,96 @@ VARIABLE REGISTER WEIGHTS
 (byte) line_xdyi::e#3 4.800000000000001
 (byte) line_xdyi::e#6 11.0
 (byte) line_xdyi::x
-(byte) line_xdyi::x#0 0.6666666666666666
-(byte) line_xdyi::x#1 4.125
-(byte) line_xdyi::x#2 8.75
+(byte) line_xdyi::x#0 0.8
+(byte) line_xdyi::x#1 0.8
+(byte) line_xdyi::x#2 4.125
+(byte) line_xdyi::x#3 8.75
+(byte) line_xdyi::x#6 3.0
 (byte) line_xdyi::x1
-(byte) line_xdyi::x1#0 0.8125
+(byte) line_xdyi::x1#0 1.3333333333333333
+(byte) line_xdyi::x1#1 1.3333333333333333
+(byte) line_xdyi::x1#6 1.0714285714285714
 (byte) line_xdyi::xd
-(byte) line_xdyi::xd#0 1.5999999999999999
+(byte) line_xdyi::xd#0 2.0
+(byte) line_xdyi::xd#1 2.0
+(byte) line_xdyi::xd#5 1.8571428571428572
 (byte) line_xdyi::y
-(byte) line_xdyi::y#0 0.8
-(byte) line_xdyi::y#1 11.0
-(byte) line_xdyi::y#2 6.571428571428571
-(byte) line_xdyi::y#5 11.0
+(byte) line_xdyi::y#0 1.0
+(byte) line_xdyi::y#1 1.0
+(byte) line_xdyi::y#2 11.0
+(byte) line_xdyi::y#3 6.571428571428571
+(byte) line_xdyi::y#5 3.0
+(byte) line_xdyi::y#6 11.0
 (byte) line_xdyi::yd
-(byte) line_xdyi::yd#0 1.0714285714285714
+(byte) line_xdyi::yd#0 4.0
+(byte) line_xdyi::yd#1 4.0
+(byte) line_xdyi::yd#2 1.2142857142857142
+(void()) line_ydxd((byte) line_ydxd::y , (byte) line_ydxd::x , (byte) line_ydxd::y1 , (byte) line_ydxd::yd , (byte) line_ydxd::xd)
+(byte~) line_ydxd::$8 22.0
+(byte) line_ydxd::e
+(byte) line_ydxd::e#0 4.0
+(byte) line_ydxd::e#1 14.666666666666666
+(byte) line_ydxd::e#2 22.0
+(byte) line_ydxd::e#3 4.800000000000001
+(byte) line_ydxd::e#6 11.0
+(byte) line_ydxd::x
+(byte) line_ydxd::x#0 1.0
+(byte) line_ydxd::x#1 1.0
+(byte) line_ydxd::x#2 11.0
+(byte) line_ydxd::x#3 6.571428571428571
+(byte) line_ydxd::x#5 3.0
+(byte) line_ydxd::x#6 11.0
+(byte) line_ydxd::xd
+(byte) line_ydxd::xd#0 4.0
+(byte) line_ydxd::xd#1 4.0
+(byte) line_ydxd::xd#2 1.2142857142857142
+(byte) line_ydxd::y
+(byte) line_ydxd::y#0 0.8
+(byte) line_ydxd::y#1 0.8
+(byte) line_ydxd::y#2 4.125
+(byte) line_ydxd::y#3 8.75
+(byte) line_ydxd::y#6 3.0
+(byte) line_ydxd::y1
+(byte) line_ydxd::y1#0 1.3333333333333333
+(byte) line_ydxd::y1#1 1.3333333333333333
+(byte) line_ydxd::y1#6 1.0714285714285714
+(byte) line_ydxd::yd
+(byte) line_ydxd::yd#0 2.0
+(byte) line_ydxd::yd#1 2.0
+(byte) line_ydxd::yd#5 1.8571428571428572
+(void()) line_ydxi((byte) line_ydxi::y , (byte) line_ydxi::x , (byte) line_ydxi::y1 , (byte) line_ydxi::yd , (byte) line_ydxi::xd)
+(byte~) line_ydxi::$8 22.0
+(byte) line_ydxi::e
+(byte) line_ydxi::e#0 4.0
+(byte) line_ydxi::e#1 14.666666666666666
+(byte) line_ydxi::e#2 22.0
+(byte) line_ydxi::e#3 4.800000000000001
+(byte) line_ydxi::e#6 11.0
+(byte) line_ydxi::x
+(byte) line_ydxi::x#0 1.0
+(byte) line_ydxi::x#1 1.0
+(byte) line_ydxi::x#2 11.0
+(byte) line_ydxi::x#3 6.571428571428571
+(byte) line_ydxi::x#5 3.0
+(byte) line_ydxi::x#6 11.0
+(byte) line_ydxi::xd
+(byte) line_ydxi::xd#0 4.0
+(byte) line_ydxi::xd#1 4.0
+(byte) line_ydxi::xd#2 1.2142857142857142
+(byte) line_ydxi::y
+(byte) line_ydxi::y#0 0.8
+(byte) line_ydxi::y#1 0.8
+(byte) line_ydxi::y#2 4.125
+(byte) line_ydxi::y#3 8.75
+(byte) line_ydxi::y#6 3.0
+(byte) line_ydxi::y1
+(byte) line_ydxi::y1#0 1.3333333333333333
+(byte) line_ydxi::y1#1 1.3333333333333333
+(byte) line_ydxi::y1#6 1.0714285714285714
+(byte) line_ydxi::yd
+(byte) line_ydxi::yd#0 2.0
+(byte) line_ydxi::yd#1 2.0
+(byte) line_ydxi::yd#5 1.8571428571428572
 (void()) lines()
 (byte~) lines::$0 50.5
 (byte~) lines::$2 50.5
@@ -9819,27 +15334,17 @@ VARIABLE REGISTER WEIGHTS
 (byte*) plot::plotter_y#1 2.0
 (byte*) plot::plotter_y#2 4.0
 (byte) plot::x
-(byte) plot::x#0 2.0
-(byte) plot::x#1 2.0
-(byte) plot::x#2 2.0
-(byte) plot::x#3 2.0
-(byte) plot::x#4 2.0
-(byte) plot::x#5 2.0
-(byte) plot::x#6 2.0
-(byte) plot::x#7 2.0
-(byte) plot::x#8 11.0
-(byte) plot::x#9 3.0
+(byte) plot::x#0 11.0
+(byte) plot::x#1 11.0
+(byte) plot::x#2 11.0
+(byte) plot::x#3 11.0
+(byte) plot::x#4 4.545454545454545
 (byte) plot::y
-(byte) plot::y#0 4.0
-(byte) plot::y#1 4.0
-(byte) plot::y#2 4.0
-(byte) plot::y#3 4.0
-(byte) plot::y#4 4.0
-(byte) plot::y#5 4.0
-(byte) plot::y#6 4.0
-(byte) plot::y#7 4.0
-(byte) plot::y#8 22.0
-(byte) plot::y#9 4.428571428571428
+(byte) plot::y#0 22.0
+(byte) plot::y#1 22.0
+(byte) plot::y#2 22.0
+(byte) plot::y#3 22.0
+(byte) plot::y#4 6.857142857142857
 (byte[]) plot_bit
 (byte[]) plot_xhi
 (byte[]) plot_xlo
@@ -9848,11 +15353,32 @@ VARIABLE REGISTER WEIGHTS
 
 Initial phi equivalence classes
 [ lines::l#2 lines::l#1 ]
-[ plot::x#9 plot::x#6 plot::x#1 plot::x#3 plot::x#0 plot::x#5 plot::x#7 plot::x#2 plot::x#4 plot::x#8 ]
-[ plot::y#9 plot::y#6 plot::y#1 plot::y#3 plot::y#0 plot::y#5 plot::y#7 plot::y#2 plot::y#4 plot::y#8 ]
-[ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ]
-[ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ]
+[ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ]
+[ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ]
+[ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ]
+[ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ]
+[ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ]
+[ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ]
+[ plot::x#4 plot::x#1 plot::x#0 plot::x#3 plot::x#2 ]
+[ plot::y#4 plot::y#1 plot::y#0 plot::y#3 plot::y#2 ]
+[ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ]
+[ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ]
+[ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ]
+[ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ]
+[ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ]
 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
+[ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ]
+[ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ]
+[ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ]
+[ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ]
+[ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ]
+[ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ]
+[ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ]
+[ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ]
+[ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ]
+[ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ]
+[ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ]
+[ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ]
 [ init_plot_tables::x#2 init_plot_tables::x#1 ]
 [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ]
 [ init_plot_tables::y#2 init_plot_tables::y#1 ]
@@ -9868,11 +15394,12 @@ Added variable line::x1#0 to zero page equivalence class [ line::x1#0 ]
 Added variable line::y0#0 to zero page equivalence class [ line::y0#0 ]
 Added variable line::y1#0 to zero page equivalence class [ line::y1#0 ]
 Added variable line::xd#1 to zero page equivalence class [ line::xd#1 ]
+Added variable line::yd#1 to zero page equivalence class [ line::yd#1 ]
 Added variable line::yd#0 to zero page equivalence class [ line::yd#0 ]
-Added variable line_xdyi::x1#0 to zero page equivalence class [ line_xdyi::x1#0 ]
-Added variable line_xdyi::xd#0 to zero page equivalence class [ line_xdyi::xd#0 ]
-Added variable line_xdyi::yd#0 to zero page equivalence class [ line_xdyi::yd#0 ]
 Added variable line::xd#0 to zero page equivalence class [ line::xd#0 ]
+Added variable line::yd#3 to zero page equivalence class [ line::yd#3 ]
+Added variable line::yd#10 to zero page equivalence class [ line::yd#10 ]
+Added variable line_ydxi::$8 to zero page equivalence class [ line_ydxi::$8 ]
 Added variable plot::$0 to zero page equivalence class [ plot::$0 ]
 Added variable plot::plotter_x#1 to zero page equivalence class [ plot::plotter_x#1 ]
 Added variable plot::$1 to zero page equivalence class [ plot::$1 ]
@@ -9886,6 +15413,8 @@ Added variable plot::$5 to zero page equivalence class [ plot::$5 ]
 Added variable plot::$6 to zero page equivalence class [ plot::$6 ]
 Added variable plot::$7 to zero page equivalence class [ plot::$7 ]
 Added variable line_xdyi::$8 to zero page equivalence class [ line_xdyi::$8 ]
+Added variable line_ydxd::$8 to zero page equivalence class [ line_ydxd::$8 ]
+Added variable line_xdyd::$8 to zero page equivalence class [ line_xdyd::$8 ]
 Added variable init_plot_tables::$0 to zero page equivalence class [ init_plot_tables::$0 ]
 Added variable init_plot_tables::$6 to zero page equivalence class [ init_plot_tables::$6 ]
 Added variable init_plot_tables::$7 to zero page equivalence class [ init_plot_tables::$7 ]
@@ -9894,11 +15423,32 @@ Added variable init_plot_tables::$9 to zero page equivalence class [ init_plot_t
 Added variable init_plot_tables::$10 to zero page equivalence class [ init_plot_tables::$10 ]
 Complete equivalence classes
 [ lines::l#2 lines::l#1 ]
-[ plot::x#9 plot::x#6 plot::x#1 plot::x#3 plot::x#0 plot::x#5 plot::x#7 plot::x#2 plot::x#4 plot::x#8 ]
-[ plot::y#9 plot::y#6 plot::y#1 plot::y#3 plot::y#0 plot::y#5 plot::y#7 plot::y#2 plot::y#4 plot::y#8 ]
-[ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ]
-[ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ]
+[ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ]
+[ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ]
+[ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ]
+[ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ]
+[ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ]
+[ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ]
+[ plot::x#4 plot::x#1 plot::x#0 plot::x#3 plot::x#2 ]
+[ plot::y#4 plot::y#1 plot::y#0 plot::y#3 plot::y#2 ]
+[ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ]
+[ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ]
+[ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ]
+[ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ]
+[ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ]
 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
+[ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ]
+[ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ]
+[ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ]
+[ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ]
+[ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ]
+[ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ]
+[ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ]
+[ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ]
+[ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ]
+[ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ]
+[ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ]
+[ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ]
 [ init_plot_tables::x#2 init_plot_tables::x#1 ]
 [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ]
 [ init_plot_tables::y#2 init_plot_tables::y#1 ]
@@ -9914,11 +15464,12 @@ Complete equivalence classes
 [ line::y0#0 ]
 [ line::y1#0 ]
 [ line::xd#1 ]
+[ line::yd#1 ]
 [ line::yd#0 ]
-[ line_xdyi::x1#0 ]
-[ line_xdyi::xd#0 ]
-[ line_xdyi::yd#0 ]
 [ line::xd#0 ]
+[ line::yd#3 ]
+[ line::yd#10 ]
+[ line_ydxi::$8 ]
 [ plot::$0 ]
 [ plot::plotter_x#1 ]
 [ plot::$1 ]
@@ -9932,6 +15483,8 @@ Complete equivalence classes
 [ plot::$6 ]
 [ plot::$7 ]
 [ line_xdyi::$8 ]
+[ line_ydxd::$8 ]
+[ line_xdyd::$8 ]
 [ init_plot_tables::$0 ]
 [ init_plot_tables::$6 ]
 [ init_plot_tables::$7 ]
@@ -9939,50 +15492,74 @@ Complete equivalence classes
 [ init_plot_tables::$9 ]
 [ init_plot_tables::$10 ]
 Allocated zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ]
-Allocated zp ZP_BYTE:3 [ plot::x#9 plot::x#6 plot::x#1 plot::x#3 plot::x#0 plot::x#5 plot::x#7 plot::x#2 plot::x#4 plot::x#8 ]
-Allocated zp ZP_BYTE:4 [ plot::y#9 plot::y#6 plot::y#1 plot::y#3 plot::y#0 plot::y#5 plot::y#7 plot::y#2 plot::y#4 plot::y#8 ]
-Allocated zp ZP_BYTE:5 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ]
-Allocated zp ZP_BYTE:6 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ]
-Allocated zp ZP_BYTE:7 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
-Allocated zp ZP_BYTE:8 [ init_plot_tables::x#2 init_plot_tables::x#1 ]
-Allocated zp ZP_BYTE:9 [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ]
-Allocated zp ZP_BYTE:10 [ init_plot_tables::y#2 init_plot_tables::y#1 ]
-Allocated zp ZP_PTR_BYTE:11 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 ]
-Allocated zp ZP_PTR_BYTE:13 [ init_screen::b#2 init_screen::b#1 ]
-Allocated zp ZP_PTR_BYTE:15 [ init_screen::c#2 init_screen::c#1 ]
-Allocated zp ZP_BYTE:17 [ lines::$0 ]
-Allocated zp ZP_BYTE:18 [ lines::$2 ]
-Allocated zp ZP_BYTE:19 [ lines::$3 ]
-Allocated zp ZP_BYTE:20 [ lines::$5 ]
-Allocated zp ZP_BYTE:21 [ line::x0#0 ]
-Allocated zp ZP_BYTE:22 [ line::x1#0 ]
-Allocated zp ZP_BYTE:23 [ line::y0#0 ]
-Allocated zp ZP_BYTE:24 [ line::y1#0 ]
-Allocated zp ZP_BYTE:25 [ line::xd#1 ]
-Allocated zp ZP_BYTE:26 [ line::yd#0 ]
-Allocated zp ZP_BYTE:27 [ line_xdyi::x1#0 ]
-Allocated zp ZP_BYTE:28 [ line_xdyi::xd#0 ]
-Allocated zp ZP_BYTE:29 [ line_xdyi::yd#0 ]
-Allocated zp ZP_BYTE:30 [ line::xd#0 ]
-Allocated zp ZP_BYTE:31 [ plot::$0 ]
-Allocated zp ZP_PTR_BYTE:32 [ plot::plotter_x#1 ]
-Allocated zp ZP_BYTE:34 [ plot::$1 ]
-Allocated zp ZP_PTR_BYTE:35 [ plot::plotter_x#2 ]
-Allocated zp ZP_BYTE:37 [ plot::$2 ]
-Allocated zp ZP_PTR_BYTE:38 [ plot::plotter_y#1 ]
-Allocated zp ZP_BYTE:40 [ plot::$3 ]
-Allocated zp ZP_PTR_BYTE:41 [ plot::plotter_y#2 ]
-Allocated zp ZP_PTR_BYTE:43 [ plot::plotter#0 ]
-Allocated zp ZP_BYTE:45 [ plot::$5 ]
-Allocated zp ZP_BYTE:46 [ plot::$6 ]
-Allocated zp ZP_BYTE:47 [ plot::$7 ]
-Allocated zp ZP_BYTE:48 [ line_xdyi::$8 ]
-Allocated zp ZP_BYTE:49 [ init_plot_tables::$0 ]
-Allocated zp ZP_BYTE:50 [ init_plot_tables::$6 ]
-Allocated zp ZP_BYTE:51 [ init_plot_tables::$7 ]
-Allocated zp ZP_BYTE:52 [ init_plot_tables::$8 ]
-Allocated zp ZP_BYTE:53 [ init_plot_tables::$9 ]
-Allocated zp ZP_BYTE:54 [ init_plot_tables::$10 ]
+Allocated zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ]
+Allocated zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ]
+Allocated zp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ]
+Allocated zp ZP_BYTE:6 [ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ]
+Allocated zp ZP_BYTE:7 [ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ]
+Allocated zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ]
+Allocated zp ZP_BYTE:9 [ plot::x#4 plot::x#1 plot::x#0 plot::x#3 plot::x#2 ]
+Allocated zp ZP_BYTE:10 [ plot::y#4 plot::y#1 plot::y#0 plot::y#3 plot::y#2 ]
+Allocated zp ZP_BYTE:11 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ]
+Allocated zp ZP_BYTE:12 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ]
+Allocated zp ZP_BYTE:13 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ]
+Allocated zp ZP_BYTE:14 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ]
+Allocated zp ZP_BYTE:15 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ]
+Allocated zp ZP_BYTE:16 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
+Allocated zp ZP_BYTE:17 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ]
+Allocated zp ZP_BYTE:18 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ]
+Allocated zp ZP_BYTE:19 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ]
+Allocated zp ZP_BYTE:20 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ]
+Allocated zp ZP_BYTE:21 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ]
+Allocated zp ZP_BYTE:22 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ]
+Allocated zp ZP_BYTE:23 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ]
+Allocated zp ZP_BYTE:24 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ]
+Allocated zp ZP_BYTE:25 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ]
+Allocated zp ZP_BYTE:26 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ]
+Allocated zp ZP_BYTE:27 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ]
+Allocated zp ZP_BYTE:28 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ]
+Allocated zp ZP_BYTE:29 [ init_plot_tables::x#2 init_plot_tables::x#1 ]
+Allocated zp ZP_BYTE:30 [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ]
+Allocated zp ZP_BYTE:31 [ init_plot_tables::y#2 init_plot_tables::y#1 ]
+Allocated zp ZP_PTR_BYTE:32 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 ]
+Allocated zp ZP_PTR_BYTE:34 [ init_screen::b#2 init_screen::b#1 ]
+Allocated zp ZP_PTR_BYTE:36 [ init_screen::c#2 init_screen::c#1 ]
+Allocated zp ZP_BYTE:38 [ lines::$0 ]
+Allocated zp ZP_BYTE:39 [ lines::$2 ]
+Allocated zp ZP_BYTE:40 [ lines::$3 ]
+Allocated zp ZP_BYTE:41 [ lines::$5 ]
+Allocated zp ZP_BYTE:42 [ line::x0#0 ]
+Allocated zp ZP_BYTE:43 [ line::x1#0 ]
+Allocated zp ZP_BYTE:44 [ line::y0#0 ]
+Allocated zp ZP_BYTE:45 [ line::y1#0 ]
+Allocated zp ZP_BYTE:46 [ line::xd#1 ]
+Allocated zp ZP_BYTE:47 [ line::yd#1 ]
+Allocated zp ZP_BYTE:48 [ line::yd#0 ]
+Allocated zp ZP_BYTE:49 [ line::xd#0 ]
+Allocated zp ZP_BYTE:50 [ line::yd#3 ]
+Allocated zp ZP_BYTE:51 [ line::yd#10 ]
+Allocated zp ZP_BYTE:52 [ line_ydxi::$8 ]
+Allocated zp ZP_BYTE:53 [ plot::$0 ]
+Allocated zp ZP_PTR_BYTE:54 [ plot::plotter_x#1 ]
+Allocated zp ZP_BYTE:56 [ plot::$1 ]
+Allocated zp ZP_PTR_BYTE:57 [ plot::plotter_x#2 ]
+Allocated zp ZP_BYTE:59 [ plot::$2 ]
+Allocated zp ZP_PTR_BYTE:60 [ plot::plotter_y#1 ]
+Allocated zp ZP_BYTE:62 [ plot::$3 ]
+Allocated zp ZP_PTR_BYTE:63 [ plot::plotter_y#2 ]
+Allocated zp ZP_PTR_BYTE:65 [ plot::plotter#0 ]
+Allocated zp ZP_BYTE:67 [ plot::$5 ]
+Allocated zp ZP_BYTE:68 [ plot::$6 ]
+Allocated zp ZP_BYTE:69 [ plot::$7 ]
+Allocated zp ZP_BYTE:70 [ line_xdyi::$8 ]
+Allocated zp ZP_BYTE:71 [ line_ydxd::$8 ]
+Allocated zp ZP_BYTE:72 [ line_xdyd::$8 ]
+Allocated zp ZP_BYTE:73 [ init_plot_tables::$0 ]
+Allocated zp ZP_BYTE:74 [ init_plot_tables::$6 ]
+Allocated zp ZP_BYTE:75 [ init_plot_tables::$7 ]
+Allocated zp ZP_BYTE:76 [ init_plot_tables::$8 ]
+Allocated zp ZP_BYTE:77 [ init_plot_tables::$9 ]
+Allocated zp ZP_BYTE:78 [ init_plot_tables::$10 ]
 INITIAL ASM
 //SEG0 Global Constants & labels
   .const COLS = $d800
@@ -10011,9 +15588,9 @@ INITIAL ASM
   lines_y: .byte $a, $28, $3c, $50, $6e, $50, $3c, $28, $a
 //SEG1 @begin
 bbegin:
-  jmp b7
-//SEG2 @7
-b7:
+  jmp b10
+//SEG2 @10
+b10:
 //SEG3 [0] call main param-assignment [ ]
   jsr main
   jmp bend
@@ -10034,14 +15611,14 @@ main: {
     lda #$18
     sta D018
   //SEG10 [5] call init_screen param-assignment [ ]
-  //SEG11 [116] phi from main to init_screen [phi:main->init_screen]
+  //SEG11 [186] phi from main to init_screen [phi:main->init_screen]
   init_screen_from_main:
     jsr init_screen
     jmp b3
   //SEG12 main::@3
   b3:
   //SEG13 [6] call init_plot_tables param-assignment [ ]
-  //SEG14 [91] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
+  //SEG14 [161] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
   init_plot_tables_from_b3:
     jsr init_plot_tables
     jmp b1
@@ -10064,10 +15641,10 @@ main: {
 }
 //SEG22 lines
 lines: {
-    .label _0 = 17
-    .label _2 = 18
-    .label _3 = 19
-    .label _5 = 20
+    .label _0 = 38
+    .label _2 = 39
+    .label _3 = 40
+    .label _5 = 41
     .label l = 2
   //SEG23 [11] phi from lines to lines::@1 [phi:lines->lines::@1]
   b1_from_lines:
@@ -10128,20 +15705,23 @@ lines: {
 }
 //SEG42 line
 line: {
-    .label x0 = 21
-    .label x1 = 22
-    .label y0 = 23
-    .label y1 = 24
-    .label xd = 30
-    .label xd_1 = 25
-    .label yd = 26
+    .label x0 = 42
+    .label x1 = 43
+    .label y0 = 44
+    .label y1 = 45
+    .label xd = 49
+    .label xd_1 = 46
+    .label yd = 48
+    .label yd_1 = 47
+    .label yd_3 = 50
+    .label yd_10 = 51
   //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_zpby2_then_la1 
     lda x0
     cmp x1
     bcs b1
-    jmp b9
-  //SEG44 line::@9
-  b9:
+    jmp b15
+  //SEG44 line::@15
+  b15:
   //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=zpby2_minus_zpby3 
     lda x1
     sec
@@ -10151,229 +15731,422 @@ line: {
     lda y0
     cmp y1
     bcs b2
-    jmp b10
-  //SEG47 line::@10
-  b10:
-  //SEG48 [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1=zpby2_minus_zpby3 
+    jmp b16
+  //SEG47 line::@16
+  b16:
+  //SEG48 [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1=zpby2_minus_zpby3 
     lda y1
     sec
     sbc y0
-    sta yd
-  //SEG49 [28] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1_ge_zpby2_then_la1 
-    lda yd
+    sta yd_1
+  //SEG49 [28] if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd_1
     cmp xd_1
     bcs b3
-    jmp b11
-  //SEG50 line::@11
-  b11:
-  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyi::x#0 ] -- zpby1=zpby2 
+    jmp b17
+  //SEG50 line::@17
+  b17:
+  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#1 line_xdyi::x#0 ] -- zpby1=zpby2 
     lda x0
     sta line_xdyi.x
-  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=zpby2 
+  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=zpby2 
     lda y0
     sta line_xdyi.y
-  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=zpby2 
+  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=zpby2 
     lda x1
     sta line_xdyi.x1
-  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ] -- zpby1=zpby2 
+  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ] -- zpby1=zpby2 
     lda xd_1
     sta line_xdyi.xd
-  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=zpby2 
-    lda yd
+  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=zpby2 
+    lda yd_1
     sta line_xdyi.yd
   //SEG56 [34] call line_xdyi param-assignment [ ]
+  //SEG57 [116] phi from line::@17 to line_xdyi [phi:line::@17->line_xdyi]
+  line_xdyi_from_b17:
+  //SEG58 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#0 [phi:line::@17->line_xdyi#0] -- register_copy 
+  //SEG59 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#0 [phi:line::@17->line_xdyi#1] -- register_copy 
+  //SEG60 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#0 [phi:line::@17->line_xdyi#2] -- register_copy 
+  //SEG61 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#0 [phi:line::@17->line_xdyi#3] -- register_copy 
+  //SEG62 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#0 [phi:line::@17->line_xdyi#4] -- register_copy 
     jsr line_xdyi
     jmp breturn
-  //SEG57 line::@return
+  //SEG63 line::@return
   breturn:
-  //SEG58 [35] return  [ ]
+  //SEG64 [35] return  [ ]
     rts
-  //SEG59 line::@3
+  //SEG65 line::@3
   b3:
-  //SEG60 [36] (byte) plot::x#2 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#2 ] -- zpby1=zpby2 
-    lda x0
-    sta plot.x
-  //SEG61 [37] (byte) plot::y#2 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#2 plot::y#2 ] -- zpby1=zpby2 
+  //SEG66 [36] (byte) line_ydxi::y#0 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 ] -- zpby1=zpby2 
     lda y0
-    sta plot.y
-  //SEG62 [38] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG63 [62] phi from line::@3 to plot [phi:line::@3->plot]
-  plot_from_b3:
-  //SEG64 [62] phi (byte) plot::y#9 = (byte) plot::y#2 [phi:line::@3->plot#0] -- register_copy 
-  //SEG65 [62] phi (byte) plot::x#9 = (byte) plot::x#2 [phi:line::@3->plot#1] -- register_copy 
-    jsr plot
-    jmp b19
-  //SEG66 line::@19
-  b19:
-  //SEG67 [39] (byte) plot::x#3 ← (byte) line::x1#0 [ line::y1#0 plot::x#3 ] -- zpby1=zpby2 
-    lda x1
-    sta plot.x
-  //SEG68 [40] (byte) plot::y#3 ← (byte) line::y1#0 [ plot::x#3 plot::y#3 ] -- zpby1=zpby2 
+    sta line_ydxi.y
+  //SEG67 [37] (byte) line_ydxi::x#0 ← (byte) line::x0#0 [ line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxi.x
+  //SEG68 [38] (byte) line_ydxi::y1#0 ← (byte) line::y1#0 [ line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 ] -- zpby1=zpby2 
     lda y1
-    sta plot.y
-  //SEG69 [41] call plot param-assignment [ ]
-  //SEG70 [62] phi from line::@19 to plot [phi:line::@19->plot]
-  plot_from_b19:
-  //SEG71 [62] phi (byte) plot::y#9 = (byte) plot::y#3 [phi:line::@19->plot#0] -- register_copy 
-  //SEG72 [62] phi (byte) plot::x#9 = (byte) plot::x#3 [phi:line::@19->plot#1] -- register_copy 
-    jsr plot
+    sta line_ydxi.y1
+  //SEG69 [39] (byte) line_ydxi::yd#0 ← (byte) line::yd#1 [ line::xd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 ] -- zpby1=zpby2 
+    lda yd_1
+    sta line_ydxi.yd
+  //SEG70 [40] (byte) line_ydxi::xd#0 ← (byte) line::xd#1 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#0 ] -- zpby1=zpby2 
+    lda xd_1
+    sta line_ydxi.xd
+  //SEG71 [41] call line_ydxi param-assignment [ ]
+  //SEG72 [86] phi from line::@3 to line_ydxi [phi:line::@3->line_ydxi]
+  line_ydxi_from_b3:
+  //SEG73 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#0 [phi:line::@3->line_ydxi#0] -- register_copy 
+  //SEG74 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#0 [phi:line::@3->line_ydxi#1] -- register_copy 
+  //SEG75 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#0 [phi:line::@3->line_ydxi#2] -- register_copy 
+  //SEG76 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#0 [phi:line::@3->line_ydxi#3] -- register_copy 
+  //SEG77 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#0 [phi:line::@3->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
-  //SEG73 line::@2
+  //SEG78 line::@2
   b2:
-  //SEG74 [42] (byte) plot::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#0 ] -- zpby1=zpby2 
-    lda x0
-    sta plot.x
-  //SEG75 [43] (byte) plot::y#0 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#0 plot::y#0 ] -- zpby1=zpby2 
+  //SEG79 [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1=zpby2_minus_zpby3 
     lda y0
-    sta plot.y
-  //SEG76 [44] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG77 [62] phi from line::@2 to plot [phi:line::@2->plot]
-  plot_from_b2:
-  //SEG78 [62] phi (byte) plot::y#9 = (byte) plot::y#0 [phi:line::@2->plot#0] -- register_copy 
-  //SEG79 [62] phi (byte) plot::x#9 = (byte) plot::x#0 [phi:line::@2->plot#1] -- register_copy 
-    jsr plot
-    jmp b17
-  //SEG80 line::@17
-  b17:
-  //SEG81 [45] (byte) plot::x#1 ← (byte) line::x1#0 [ line::y1#0 plot::x#1 ] -- zpby1=zpby2 
-    lda x1
-    sta plot.x
-  //SEG82 [46] (byte) plot::y#1 ← (byte) line::y1#0 [ plot::x#1 plot::y#1 ] -- zpby1=zpby2 
-    lda y1
-    sta plot.y
-  //SEG83 [47] call plot param-assignment [ ]
-  //SEG84 [62] phi from line::@17 to plot [phi:line::@17->plot]
-  plot_from_b17:
-  //SEG85 [62] phi (byte) plot::y#9 = (byte) plot::y#1 [phi:line::@17->plot#0] -- register_copy 
-  //SEG86 [62] phi (byte) plot::x#9 = (byte) plot::x#1 [phi:line::@17->plot#1] -- register_copy 
-    jsr plot
-    jmp breturn
-  //SEG87 line::@1
-  b1:
-  //SEG88 [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1=zpby2_minus_zpby3 
-    lda x1
     sec
-    sbc x0
+    sbc y1
+    sta yd
+  //SEG80 [43] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd_1
+    bcs b6
+    jmp b20
+  //SEG81 line::@20
+  b20:
+  //SEG82 [44] (byte) line_xdyd::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyd::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x
+  //SEG83 [45] (byte) line_xdyd::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyd.y
+  //SEG84 [46] (byte) line_xdyd::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 ] -- zpby1=zpby2 
+    lda x1
+    sta line_xdyd.x1
+  //SEG85 [47] (byte) line_xdyd::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 ] -- zpby1=zpby2 
+    lda xd_1
+    sta line_xdyd.xd
+  //SEG86 [48] (byte) line_xdyd::yd#0 ← (byte) line::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG87 [49] call line_xdyd param-assignment [ ]
+  //SEG88 [146] phi from line::@20 to line_xdyd [phi:line::@20->line_xdyd]
+  line_xdyd_from_b20:
+  //SEG89 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#0 [phi:line::@20->line_xdyd#0] -- register_copy 
+  //SEG90 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#0 [phi:line::@20->line_xdyd#1] -- register_copy 
+  //SEG91 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#0 [phi:line::@20->line_xdyd#2] -- register_copy 
+  //SEG92 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#0 [phi:line::@20->line_xdyd#3] -- register_copy 
+  //SEG93 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#0 [phi:line::@20->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
+    jmp breturn
+  //SEG94 line::@6
+  b6:
+  //SEG95 [50] (byte) line_ydxd::y#0 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 ] -- zpby1=zpby2 
+    lda y1
+    sta line_ydxd.y
+  //SEG96 [51] (byte) line_ydxd::x#0 ← (byte) line::x1#0 [ line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 ] -- zpby1=zpby2 
+    lda x1
+    sta line_ydxd.x
+  //SEG97 [52] (byte) line_ydxd::y1#0 ← (byte) line::y0#0 [ line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y1
+  //SEG98 [53] (byte) line_ydxd::yd#0 ← (byte) line::yd#0 [ line::xd#1 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG99 [54] (byte) line_ydxd::xd#0 ← (byte) line::xd#1 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#0 ] -- zpby1=zpby2 
+    lda xd_1
+    sta line_ydxd.xd
+  //SEG100 [55] call line_ydxd param-assignment [ ]
+  //SEG101 [131] phi from line::@6 to line_ydxd [phi:line::@6->line_ydxd]
+  line_ydxd_from_b6:
+  //SEG102 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#0 [phi:line::@6->line_ydxd#0] -- register_copy 
+  //SEG103 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#0 [phi:line::@6->line_ydxd#1] -- register_copy 
+  //SEG104 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#0 [phi:line::@6->line_ydxd#2] -- register_copy 
+  //SEG105 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#0 [phi:line::@6->line_ydxd#3] -- register_copy 
+  //SEG106 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#0 [phi:line::@6->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG107 line::@1
+  b1:
+  //SEG108 [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1=zpby2_minus_zpby3 
+    lda x0
+    sec
+    sbc x1
     sta xd
-  //SEG89 [49] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_zpby2_then_la1 
+  //SEG109 [57] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1_ge_zpby2_then_la1 
     lda y0
     cmp y1
-    bcs b7
-    jmp b15
-  //SEG90 line::@15
-  b15:
-  //SEG91 [50] (byte) plot::x#6 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#6 ] -- zpby1=zpby2 
-    lda x0
-    sta plot.x
-  //SEG92 [51] (byte) plot::y#6 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#6 plot::y#6 ] -- zpby1=zpby2 
-    lda y0
-    sta plot.y
-  //SEG93 [52] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG94 [62] phi from line::@15 to plot [phi:line::@15->plot]
-  plot_from_b15:
-  //SEG95 [62] phi (byte) plot::y#9 = (byte) plot::y#6 [phi:line::@15->plot#0] -- register_copy 
-  //SEG96 [62] phi (byte) plot::x#9 = (byte) plot::x#6 [phi:line::@15->plot#1] -- register_copy 
-    jsr plot
+    bcs b9
+    jmp b23
+  //SEG110 line::@23
+  b23:
+  //SEG111 [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1=zpby2_minus_zpby3 
+    lda y1
+    sec
+    sbc y0
+    sta yd_3
+  //SEG112 [59] if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd_3
+    cmp xd
+    bcs b10
     jmp b24
-  //SEG97 line::@24
+  //SEG113 line::@24
   b24:
-  //SEG98 [53] (byte) plot::x#7 ← (byte) line::x1#0 [ line::y1#0 plot::x#7 ] -- zpby1=zpby2 
+  //SEG114 [60] (byte) line_xdyd::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_xdyd::x#1 ] -- zpby1=zpby2 
     lda x1
-    sta plot.x
-  //SEG99 [54] (byte) plot::y#7 ← (byte) line::y1#0 [ plot::x#7 plot::y#7 ] -- zpby1=zpby2 
+    sta line_xdyd.x
+  //SEG115 [61] (byte) line_xdyd::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 ] -- zpby1=zpby2 
     lda y1
-    sta plot.y
-  //SEG100 [55] call plot param-assignment [ ]
-  //SEG101 [62] phi from line::@24 to plot [phi:line::@24->plot]
-  plot_from_b24:
-  //SEG102 [62] phi (byte) plot::y#9 = (byte) plot::y#7 [phi:line::@24->plot#0] -- register_copy 
-  //SEG103 [62] phi (byte) plot::x#9 = (byte) plot::x#7 [phi:line::@24->plot#1] -- register_copy 
-    jsr plot
-    jmp breturn
-  //SEG104 line::@7
-  b7:
-  //SEG105 [56] (byte) plot::x#4 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#4 ] -- zpby1=zpby2 
+    sta line_xdyd.y
+  //SEG116 [62] (byte) line_xdyd::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 ] -- zpby1=zpby2 
     lda x0
-    sta plot.x
-  //SEG106 [57] (byte) plot::y#4 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#4 plot::y#4 ] -- zpby1=zpby2 
+    sta line_xdyd.x1
+  //SEG117 [63] (byte) line_xdyd::xd#1 ← (byte) line::xd#0 [ line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG118 [64] (byte) line_xdyd::yd#1 ← (byte) line::yd#3 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#1 ] -- zpby1=zpby2 
+    lda yd_3
+    sta line_xdyd.yd
+  //SEG119 [65] call line_xdyd param-assignment [ ]
+  //SEG120 [146] phi from line::@24 to line_xdyd [phi:line::@24->line_xdyd]
+  line_xdyd_from_b24:
+  //SEG121 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#1 [phi:line::@24->line_xdyd#0] -- register_copy 
+  //SEG122 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#1 [phi:line::@24->line_xdyd#1] -- register_copy 
+  //SEG123 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#1 [phi:line::@24->line_xdyd#2] -- register_copy 
+  //SEG124 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#1 [phi:line::@24->line_xdyd#3] -- register_copy 
+  //SEG125 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#1 [phi:line::@24->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
+    jmp breturn
+  //SEG126 line::@10
+  b10:
+  //SEG127 [66] (byte) line_ydxd::y#1 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 ] -- zpby1=zpby2 
     lda y0
-    sta plot.y
-  //SEG107 [58] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG108 [62] phi from line::@7 to plot [phi:line::@7->plot]
-  plot_from_b7:
-  //SEG109 [62] phi (byte) plot::y#9 = (byte) plot::y#4 [phi:line::@7->plot#0] -- register_copy 
-  //SEG110 [62] phi (byte) plot::x#9 = (byte) plot::x#4 [phi:line::@7->plot#1] -- register_copy 
-    jsr plot
-    jmp b22
-  //SEG111 line::@22
-  b22:
-  //SEG112 [59] (byte) plot::x#5 ← (byte) line::x1#0 [ line::y1#0 plot::x#5 ] -- zpby1=zpby2 
-    lda x1
-    sta plot.x
-  //SEG113 [60] (byte) plot::y#5 ← (byte) line::y1#0 [ plot::x#5 plot::y#5 ] -- zpby1=zpby2 
+    sta line_ydxd.y
+  //SEG128 [67] (byte) line_ydxd::x#1 ← (byte) line::x0#0 [ line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxd.x
+  //SEG129 [68] (byte) line_ydxd::y1#1 ← (byte) line::y1#0 [ line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 ] -- zpby1=zpby2 
     lda y1
-    sta plot.y
-  //SEG114 [61] call plot param-assignment [ ]
-  //SEG115 [62] phi from line::@22 to plot [phi:line::@22->plot]
-  plot_from_b22:
-  //SEG116 [62] phi (byte) plot::y#9 = (byte) plot::y#5 [phi:line::@22->plot#0] -- register_copy 
-  //SEG117 [62] phi (byte) plot::x#9 = (byte) plot::x#5 [phi:line::@22->plot#1] -- register_copy 
-    jsr plot
+    sta line_ydxd.y1
+  //SEG130 [69] (byte) line_ydxd::yd#1 ← (byte) line::yd#3 [ line::xd#0 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 ] -- zpby1=zpby2 
+    lda yd_3
+    sta line_ydxd.yd
+  //SEG131 [70] (byte) line_ydxd::xd#1 ← (byte) line::xd#0 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG132 [71] call line_ydxd param-assignment [ ]
+  //SEG133 [131] phi from line::@10 to line_ydxd [phi:line::@10->line_ydxd]
+  line_ydxd_from_b10:
+  //SEG134 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#1 [phi:line::@10->line_ydxd#0] -- register_copy 
+  //SEG135 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#1 [phi:line::@10->line_ydxd#1] -- register_copy 
+  //SEG136 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#1 [phi:line::@10->line_ydxd#2] -- register_copy 
+  //SEG137 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#1 [phi:line::@10->line_ydxd#3] -- register_copy 
+  //SEG138 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#1 [phi:line::@10->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG139 line::@9
+  b9:
+  //SEG140 [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1=zpby2_minus_zpby3 
+    lda y0
+    sec
+    sbc y1
+    sta yd_10
+  //SEG141 [73] if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd_10
+    cmp xd
+    bcs b13
+    jmp b27
+  //SEG142 line::@27
+  b27:
+  //SEG143 [74] (byte) line_xdyi::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#10 line_xdyi::x#1 ] -- zpby1=zpby2 
+    lda x1
+    sta line_xdyi.x
+  //SEG144 [75] (byte) line_xdyi::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 ] -- zpby1=zpby2 
+    lda y1
+    sta line_xdyi.y
+  //SEG145 [76] (byte) line_xdyi::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyi.x1
+  //SEG146 [77] (byte) line_xdyi::xd#1 ← (byte) line::xd#0 [ line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG147 [78] (byte) line_xdyi::yd#1 ← (byte) line::yd#10 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#1 ] -- zpby1=zpby2 
+    lda yd_10
+    sta line_xdyi.yd
+  //SEG148 [79] call line_xdyi param-assignment [ ]
+  //SEG149 [116] phi from line::@27 to line_xdyi [phi:line::@27->line_xdyi]
+  line_xdyi_from_b27:
+  //SEG150 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#1 [phi:line::@27->line_xdyi#0] -- register_copy 
+  //SEG151 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#1 [phi:line::@27->line_xdyi#1] -- register_copy 
+  //SEG152 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line::@27->line_xdyi#2] -- register_copy 
+  //SEG153 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#1 [phi:line::@27->line_xdyi#3] -- register_copy 
+  //SEG154 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#1 [phi:line::@27->line_xdyi#4] -- register_copy 
+    jsr line_xdyi
+    jmp breturn
+  //SEG155 line::@13
+  b13:
+  //SEG156 [80] (byte) line_ydxi::y#1 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 ] -- zpby1=zpby2 
+    lda y1
+    sta line_ydxi.y
+  //SEG157 [81] (byte) line_ydxi::x#1 ← (byte) line::x1#0 [ line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 ] -- zpby1=zpby2 
+    lda x1
+    sta line_ydxi.x
+  //SEG158 [82] (byte) line_ydxi::y1#1 ← (byte) line::y0#0 [ line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y1
+  //SEG159 [83] (byte) line_ydxi::yd#1 ← (byte) line::yd#10 [ line::xd#0 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 ] -- zpby1=zpby2 
+    lda yd_10
+    sta line_ydxi.yd
+  //SEG160 [84] (byte) line_ydxi::xd#1 ← (byte) line::xd#0 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG161 [85] call line_ydxi param-assignment [ ]
+  //SEG162 [86] phi from line::@13 to line_ydxi [phi:line::@13->line_ydxi]
+  line_ydxi_from_b13:
+  //SEG163 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#1 [phi:line::@13->line_ydxi#0] -- register_copy 
+  //SEG164 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#1 [phi:line::@13->line_ydxi#1] -- register_copy 
+  //SEG165 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#1 [phi:line::@13->line_ydxi#2] -- register_copy 
+  //SEG166 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#1 [phi:line::@13->line_ydxi#3] -- register_copy 
+  //SEG167 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#1 [phi:line::@13->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
 }
-//SEG118 plot
+//SEG168 line_ydxi
+line_ydxi: {
+    .label _8 = 52
+    .label y = 7
+    .label x = 6
+    .label y1 = 5
+    .label yd = 4
+    .label xd = 3
+    .label e = 8
+  //SEG169 [87] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG170 [88] phi from line_ydxi line_ydxi::@2 to line_ydxi::@1 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1]
+  b1_from_line_ydxi:
+  b1_from_b2:
+  //SEG171 [88] phi (byte) line_ydxi::e#3 = (byte) line_ydxi::e#0 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#0] -- register_copy 
+  //SEG172 [88] phi (byte) line_ydxi::y#3 = (byte) line_ydxi::y#6 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#1] -- register_copy 
+  //SEG173 [88] phi (byte) line_ydxi::x#3 = (byte) line_ydxi::x#5 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#2] -- register_copy 
+    jmp b1
+  //SEG174 line_ydxi::@1
+  b1:
+  //SEG175 [89] (byte) plot::x#2 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 ] -- zpby1=zpby2 
+    lda x
+    sta plot.x
+  //SEG176 [90] (byte) plot::y#2 ← (byte) line_ydxi::y#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 plot::y#2 ] -- zpby1=zpby2 
+    lda y
+    sta plot.y
+  //SEG177 [91] call plot param-assignment [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  //SEG178 [101] phi from line_ydxi::@1 to plot [phi:line_ydxi::@1->plot]
+  plot_from_b1:
+  //SEG179 [101] phi (byte) plot::y#4 = (byte) plot::y#2 [phi:line_ydxi::@1->plot#0] -- register_copy 
+  //SEG180 [101] phi (byte) plot::x#4 = (byte) plot::x#2 [phi:line_ydxi::@1->plot#1] -- register_copy 
+    jsr plot
+    jmp b5
+  //SEG181 line_ydxi::@5
+  b5:
+  //SEG182 [92] (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::e#3 line_ydxi::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG183 [93] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG184 [94] if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2_from_b5
+    jmp b3
+  //SEG185 line_ydxi::@3
+  b3:
+  //SEG186 [95] (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG187 [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG188 [97] phi from line_ydxi::@3 line_ydxi::@5 to line_ydxi::@2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2]
+  b2_from_b3:
+  b2_from_b5:
+  //SEG189 [97] phi (byte) line_ydxi::e#6 = (byte) line_ydxi::e#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#0] -- register_copy 
+  //SEG190 [97] phi (byte) line_ydxi::x#6 = (byte) line_ydxi::x#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#1] -- register_copy 
+    jmp b2
+  //SEG191 line_ydxi::@2
+  b2:
+  //SEG192 [98] (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 line_ydxi::$8 ] -- zpby1=zpby2_plus_1 
+    lda y1
+    clc
+    adc #1
+    sta _8
+  //SEG193 [99] if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ] -- zpby1_lt_zpby2_then_la1 
+    lda y
+    cmp _8
+    bcc b1_from_b2
+    jmp breturn
+  //SEG194 line_ydxi::@return
+  breturn:
+  //SEG195 [100] return  [ ]
+    rts
+}
+//SEG196 plot
 plot: {
-    .label _0 = 31
-    .label _1 = 34
-    .label _2 = 37
-    .label _3 = 40
-    .label _5 = 45
-    .label _6 = 46
-    .label _7 = 47
-    .label x = 3
-    .label y = 4
-    .label plotter_x = 32
-    .label plotter_x_2 = 35
-    .label plotter_y = 38
-    .label plotter_y_2 = 41
-    .label plotter = 43
-  //SEG119 [63] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::$0 ] -- zpby1=cowo1_staridx_zpby2 
+    .label _0 = 53
+    .label _1 = 56
+    .label _2 = 59
+    .label _3 = 62
+    .label _5 = 67
+    .label _6 = 68
+    .label _7 = 69
+    .label x = 9
+    .label y = 10
+    .label plotter_x = 54
+    .label plotter_x_2 = 57
+    .label plotter_y = 60
+    .label plotter_y_2 = 63
+    .label plotter = 65
+  //SEG197 [102] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::$0 ] -- zpby1=cowo1_staridx_zpby2 
     ldx x
     lda plot_xhi,x
     sta _0
-  //SEG120 [64] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#9 plot::y#9 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_zpby1 
+  //SEG198 [103] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#4 plot::y#4 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_zpby1 
     lda #<0
     sta plotter_x
     lda _0
     sta plotter_x+1
-  //SEG121 [65] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::plotter_x#1 plot::$1 ] -- zpby1=cowo1_staridx_zpby2 
+  //SEG199 [104] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::plotter_x#1 plot::$1 ] -- zpby1=cowo1_staridx_zpby2 
     ldx x
     lda plot_xlo,x
     sta _1
-  //SEG122 [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ] -- zpptrby1=zpptrby2_setlo_zpby1 
+  //SEG200 [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ] -- zpptrby1=zpptrby2_setlo_zpby1 
     lda _1
     sta plotter_x_2
     lda plotter_x+1
     sta plotter_x_2+1
-  //SEG123 [67] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::$2 ] -- zpby1=cowo1_staridx_zpby2 
+  //SEG201 [106] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::$2 ] -- zpby1=cowo1_staridx_zpby2 
     ldx y
     lda plot_yhi,x
     sta _2
-  //SEG124 [68] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_zpby1 
+  //SEG202 [107] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_zpby1 
     lda #<0
     sta plotter_y
     lda _2
     sta plotter_y+1
-  //SEG125 [69] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- zpby1=cowo1_staridx_zpby2 
+  //SEG203 [108] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- zpby1=cowo1_staridx_zpby2 
     ldx y
     lda plot_ylo,x
     sta _3
-  //SEG126 [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby2_setlo_zpby1 
+  //SEG204 [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby2_setlo_zpby1 
     lda _3
     sta plotter_y_2
     lda plotter_y+1
     sta plotter_y_2+1
-  //SEG127 [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ] -- zpptrby1=zpptrby2_plus_zpptrby3 
+  //SEG205 [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ] -- zpptrby1=zpptrby2_plus_zpptrby3 
     lda plotter_x_2
     clc
     adc plotter_y_2
@@ -10381,224 +16154,386 @@ plot: {
     lda plotter_x_2+1
     adc plotter_y_2+1
     sta plotter+1
-  //SEG128 [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
+  //SEG206 [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
     ldy #0
     lda (plotter),y
     sta _5
-  //SEG129 [73] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9 [ plot::plotter#0 plot::$5 plot::$6 ] -- zpby1=cowo1_staridx_zpby2 
+  //SEG207 [112] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4 [ plot::plotter#0 plot::$5 plot::$6 ] -- zpby1=cowo1_staridx_zpby2 
     ldx x
     lda plot_bit,x
     sta _6
-  //SEG130 [74] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- zpby1=zpby2_bor_zpby3 
+  //SEG208 [113] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- zpby1=zpby2_bor_zpby3 
     lda _5
     ora _6
     sta _7
-  //SEG131 [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=zpby1 
+  //SEG209 [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=zpby1 
     ldy #0
     lda _7
     sta (plotter),y
     jmp breturn
-  //SEG132 plot::@return
+  //SEG210 plot::@return
   breturn:
-  //SEG133 [76] return  [ ]
+  //SEG211 [115] return  [ ]
     rts
 }
-//SEG134 line_xdyi
+//SEG212 line_xdyi
 line_xdyi: {
-    .label _8 = 48
-    .label x = 5
-    .label y = 6
-    .label x1 = 27
-    .label xd = 28
-    .label yd = 29
-    .label e = 7
-  //SEG135 [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
+    .label _8 = 70
+    .label x = 14
+    .label y = 15
+    .label x1 = 13
+    .label xd = 12
+    .label yd = 11
+    .label e = 16
+  //SEG213 [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
     lda yd
     lsr
     sta e
-  //SEG136 [78] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
+  //SEG214 [118] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
   b1_from_line_xdyi:
   b1_from_b2:
-  //SEG137 [78] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
-  //SEG138 [78] phi (byte) line_xdyi::y#2 = (byte) line_xdyi::y#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
-  //SEG139 [78] phi (byte) line_xdyi::x#2 = (byte) line_xdyi::x#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
+  //SEG215 [118] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
+  //SEG216 [118] phi (byte) line_xdyi::y#3 = (byte) line_xdyi::y#5 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
+  //SEG217 [118] phi (byte) line_xdyi::x#3 = (byte) line_xdyi::x#6 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
     jmp b1
-  //SEG140 line_xdyi::@1
+  //SEG218 line_xdyi::@1
   b1:
-  //SEG141 [79] (byte) plot::x#8 ← (byte) line_xdyi::x#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- zpby1=zpby2 
+  //SEG219 [119] (byte) plot::x#0 ← (byte) line_xdyi::x#3 [ plot::x#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- zpby1=zpby2 
     lda x
     sta plot.x
-  //SEG142 [80] (byte) plot::y#8 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 plot::y#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- zpby1=zpby2 
+  //SEG220 [120] (byte) plot::y#0 ← (byte) line_xdyi::y#3 [ plot::x#0 plot::y#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- zpby1=zpby2 
     lda y
     sta plot.y
-  //SEG143 [81] call plot param-assignment [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  //SEG144 [62] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
+  //SEG221 [121] call plot param-assignment [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  //SEG222 [101] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
   plot_from_b1:
-  //SEG145 [62] phi (byte) plot::y#9 = (byte) plot::y#8 [phi:line_xdyi::@1->plot#0] -- register_copy 
-  //SEG146 [62] phi (byte) plot::x#9 = (byte) plot::x#8 [phi:line_xdyi::@1->plot#1] -- register_copy 
+  //SEG223 [101] phi (byte) plot::y#4 = (byte) plot::y#0 [phi:line_xdyi::@1->plot#0] -- register_copy 
+  //SEG224 [101] phi (byte) plot::x#4 = (byte) plot::x#0 [phi:line_xdyi::@1->plot#1] -- register_copy 
     jsr plot
     jmp b5
-  //SEG147 line_xdyi::@5
+  //SEG225 line_xdyi::@5
   b5:
-  //SEG148 [82] (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::e#3 line_xdyi::x#1 ] -- zpby1=zpby1_plus_1 
+  //SEG226 [122] (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::e#3 line_xdyi::x#2 ] -- zpby1=zpby1_plus_1 
     inc x
-  //SEG149 [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+  //SEG227 [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
     lda e
     clc
     adc yd
     sta e
-  //SEG150 [84] if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+  //SEG228 [124] if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
     lda xd
     cmp e
     bcs b2_from_b5
     jmp b3
-  //SEG151 line_xdyi::@3
+  //SEG229 line_xdyi::@3
   b3:
-  //SEG152 [85] (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#1 ] -- zpby1=zpby1_plus_1 
+  //SEG230 [125] (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#2 ] -- zpby1=zpby1_plus_1 
     inc y
-  //SEG153 [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+  //SEG231 [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
     lda e
     sec
     sbc xd
     sta e
-  //SEG154 [87] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
+  //SEG232 [127] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
   b2_from_b3:
   b2_from_b5:
-  //SEG155 [87] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
-  //SEG156 [87] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
+  //SEG233 [127] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
+  //SEG234 [127] phi (byte) line_xdyi::y#6 = (byte) line_xdyi::y#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
     jmp b2
-  //SEG157 line_xdyi::@2
+  //SEG235 line_xdyi::@2
   b2:
-  //SEG158 [88] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 line_xdyi::$8 ] -- zpby1=zpby2_plus_1 
+  //SEG236 [128] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 line_xdyi::$8 ] -- zpby1=zpby2_plus_1 
     lda x1
     clc
     adc #1
     sta _8
-  //SEG159 [89] if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ] -- zpby1_lt_zpby2_then_la1 
+  //SEG237 [129] if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ] -- zpby1_lt_zpby2_then_la1 
     lda x
     cmp _8
     bcc b1_from_b2
     jmp breturn
-  //SEG160 line_xdyi::@return
+  //SEG238 line_xdyi::@return
   breturn:
-  //SEG161 [90] return  [ ]
+  //SEG239 [130] return  [ ]
     rts
 }
-//SEG162 init_plot_tables
+//SEG240 line_ydxd
+line_ydxd: {
+    .label _8 = 71
+    .label y = 21
+    .label x = 20
+    .label y1 = 19
+    .label yd = 18
+    .label xd = 17
+    .label e = 22
+  //SEG241 [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG242 [133] phi from line_ydxd line_ydxd::@2 to line_ydxd::@1 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1]
+  b1_from_line_ydxd:
+  b1_from_b2:
+  //SEG243 [133] phi (byte) line_ydxd::e#3 = (byte) line_ydxd::e#0 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#0] -- register_copy 
+  //SEG244 [133] phi (byte) line_ydxd::y#3 = (byte) line_ydxd::y#6 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#1] -- register_copy 
+  //SEG245 [133] phi (byte) line_ydxd::x#3 = (byte) line_ydxd::x#5 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#2] -- register_copy 
+    jmp b1
+  //SEG246 line_ydxd::@1
+  b1:
+  //SEG247 [134] (byte) plot::x#3 ← (byte) line_ydxd::x#3 [ plot::x#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- zpby1=zpby2 
+    lda x
+    sta plot.x
+  //SEG248 [135] (byte) plot::y#3 ← (byte) line_ydxd::y#3 [ plot::x#3 plot::y#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- zpby1=zpby2 
+    lda y
+    sta plot.y
+  //SEG249 [136] call plot param-assignment [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  //SEG250 [101] phi from line_ydxd::@1 to plot [phi:line_ydxd::@1->plot]
+  plot_from_b1:
+  //SEG251 [101] phi (byte) plot::y#4 = (byte) plot::y#3 [phi:line_ydxd::@1->plot#0] -- register_copy 
+  //SEG252 [101] phi (byte) plot::x#4 = (byte) plot::x#3 [phi:line_ydxd::@1->plot#1] -- register_copy 
+    jsr plot
+    jmp b5
+  //SEG253 line_ydxd::@5
+  b5:
+  //SEG254 [137] (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::e#3 line_ydxd::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG255 [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG256 [139] if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2_from_b5
+    jmp b3
+  //SEG257 line_ydxd::@3
+  b3:
+  //SEG258 [140] (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#2 ] -- zpby1=zpby1_minus_1 
+    dec x
+  //SEG259 [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG260 [142] phi from line_ydxd::@3 line_ydxd::@5 to line_ydxd::@2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2]
+  b2_from_b3:
+  b2_from_b5:
+  //SEG261 [142] phi (byte) line_ydxd::e#6 = (byte) line_ydxd::e#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#0] -- register_copy 
+  //SEG262 [142] phi (byte) line_ydxd::x#6 = (byte) line_ydxd::x#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#1] -- register_copy 
+    jmp b2
+  //SEG263 line_ydxd::@2
+  b2:
+  //SEG264 [143] (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 line_ydxd::$8 ] -- zpby1=zpby2_plus_1 
+    lda y1
+    clc
+    adc #1
+    sta _8
+  //SEG265 [144] if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ] -- zpby1_lt_zpby2_then_la1 
+    lda y
+    cmp _8
+    bcc b1_from_b2
+    jmp breturn
+  //SEG266 line_ydxd::@return
+  breturn:
+  //SEG267 [145] return  [ ]
+    rts
+}
+//SEG268 line_xdyd
+line_xdyd: {
+    .label _8 = 72
+    .label x = 26
+    .label y = 27
+    .label x1 = 25
+    .label xd = 24
+    .label yd = 23
+    .label e = 28
+  //SEG269 [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda yd
+    lsr
+    sta e
+  //SEG270 [148] phi from line_xdyd line_xdyd::@2 to line_xdyd::@1 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1]
+  b1_from_line_xdyd:
+  b1_from_b2:
+  //SEG271 [148] phi (byte) line_xdyd::e#3 = (byte) line_xdyd::e#0 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#0] -- register_copy 
+  //SEG272 [148] phi (byte) line_xdyd::y#3 = (byte) line_xdyd::y#5 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#1] -- register_copy 
+  //SEG273 [148] phi (byte) line_xdyd::x#3 = (byte) line_xdyd::x#6 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#2] -- register_copy 
+    jmp b1
+  //SEG274 line_xdyd::@1
+  b1:
+  //SEG275 [149] (byte) plot::x#1 ← (byte) line_xdyd::x#3 [ plot::x#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- zpby1=zpby2 
+    lda x
+    sta plot.x
+  //SEG276 [150] (byte) plot::y#1 ← (byte) line_xdyd::y#3 [ plot::x#1 plot::y#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- zpby1=zpby2 
+    lda y
+    sta plot.y
+  //SEG277 [151] call plot param-assignment [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  //SEG278 [101] phi from line_xdyd::@1 to plot [phi:line_xdyd::@1->plot]
+  plot_from_b1:
+  //SEG279 [101] phi (byte) plot::y#4 = (byte) plot::y#1 [phi:line_xdyd::@1->plot#0] -- register_copy 
+  //SEG280 [101] phi (byte) plot::x#4 = (byte) plot::x#1 [phi:line_xdyd::@1->plot#1] -- register_copy 
+    jsr plot
+    jmp b5
+  //SEG281 line_xdyd::@5
+  b5:
+  //SEG282 [152] (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::e#3 line_xdyd::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG283 [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc yd
+    sta e
+  //SEG284 [154] if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda xd
+    cmp e
+    bcs b2_from_b5
+    jmp b3
+  //SEG285 line_xdyd::@3
+  b3:
+  //SEG286 [155] (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#2 ] -- zpby1=zpby1_minus_1 
+    dec y
+  //SEG287 [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc xd
+    sta e
+  //SEG288 [157] phi from line_xdyd::@3 line_xdyd::@5 to line_xdyd::@2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2]
+  b2_from_b3:
+  b2_from_b5:
+  //SEG289 [157] phi (byte) line_xdyd::e#6 = (byte) line_xdyd::e#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#0] -- register_copy 
+  //SEG290 [157] phi (byte) line_xdyd::y#6 = (byte) line_xdyd::y#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#1] -- register_copy 
+    jmp b2
+  //SEG291 line_xdyd::@2
+  b2:
+  //SEG292 [158] (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 line_xdyd::$8 ] -- zpby1=zpby2_plus_1 
+    lda x1
+    clc
+    adc #1
+    sta _8
+  //SEG293 [159] if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ] -- zpby1_lt_zpby2_then_la1 
+    lda x
+    cmp _8
+    bcc b1_from_b2
+    jmp breturn
+  //SEG294 line_xdyd::@return
+  breturn:
+  //SEG295 [160] return  [ ]
+    rts
+}
+//SEG296 init_plot_tables
 init_plot_tables: {
-    .label _0 = 49
-    .label _6 = 50
-    .label _7 = 51
-    .label _8 = 52
-    .label _9 = 53
-    .label _10 = 54
-    .label bit = 9
-    .label x = 8
-    .label y = 10
-    .label yoffs = 11
-  //SEG163 [92] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
+    .label _0 = 73
+    .label _6 = 74
+    .label _7 = 75
+    .label _8 = 76
+    .label _9 = 77
+    .label _10 = 78
+    .label bit = 30
+    .label x = 29
+    .label y = 31
+    .label yoffs = 32
+  //SEG297 [162] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
   b1_from_init_plot_tables:
-  //SEG164 [92] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- zpby1=coby1 
+  //SEG298 [162] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- zpby1=coby1 
     lda #$80
     sta bit
-  //SEG165 [92] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- zpby1=coby1 
+  //SEG299 [162] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- zpby1=coby1 
     lda #0
     sta x
     jmp b1
-  //SEG166 [92] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
+  //SEG300 [162] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
   b1_from_b2:
-  //SEG167 [92] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
-  //SEG168 [92] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
+  //SEG301 [162] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
+  //SEG302 [162] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
     jmp b1
-  //SEG169 init_plot_tables::@1
+  //SEG303 init_plot_tables::@1
   b1:
-  //SEG170 [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- zpby1=zpby2_band_coby1 
+  //SEG304 [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- zpby1=zpby2_band_coby1 
     lda x
     and #$f8
     sta _0
-  //SEG171 [94] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_zpby1=zpby2 
+  //SEG305 [164] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_zpby1=zpby2 
     lda _0
     ldx x
     sta plot_xlo,x
-  //SEG172 [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_zpby1=coby2 
+  //SEG306 [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_zpby1=coby2 
     lda #>BITMAP
     ldx x
     sta plot_xhi,x
-  //SEG173 [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_zpby1=zpby2 
+  //SEG307 [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_zpby1=zpby2 
     lda bit
     ldx x
     sta plot_bit,x
-  //SEG174 [97] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- zpby1=zpby1_ror_1 
+  //SEG308 [167] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- zpby1=zpby1_ror_1 
     lsr
     sta bit
-  //SEG175 [98] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- zpby1_neq_0_then_la1 
+  //SEG309 [168] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- zpby1_neq_0_then_la1 
     lda bit
     bne b10
-  //SEG176 [99] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
+  //SEG310 [169] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
   b2_from_b1:
-  //SEG177 [99] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- zpby1=coby1 
+  //SEG311 [169] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- zpby1=coby1 
     lda #$80
     sta bit
     jmp b2
-  //SEG178 init_plot_tables::@2
+  //SEG312 init_plot_tables::@2
   b2:
-  //SEG179 [100] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- zpby1=_inc_zpby1 
+  //SEG313 [170] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- zpby1=_inc_zpby1 
     inc x
-  //SEG180 [101] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- zpby1_neq_0_then_la1 
+  //SEG314 [171] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- zpby1_neq_0_then_la1 
     lda x
     bne b1_from_b2
-  //SEG181 [102] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
+  //SEG315 [172] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
   b3_from_b2:
-  //SEG182 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
+  //SEG316 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
     lda #0
     sta yoffs
     lda #0
     sta yoffs+1
-  //SEG183 [102] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- zpby1=coby1 
+  //SEG317 [172] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- zpby1=coby1 
     lda #0
     sta y
     jmp b3
-  //SEG184 [102] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
+  //SEG318 [172] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
   b3_from_b4:
-  //SEG185 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
-  //SEG186 [102] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
+  //SEG319 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
+  //SEG320 [172] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
     jmp b3
-  //SEG187 init_plot_tables::@3
+  //SEG321 init_plot_tables::@3
   b3:
-  //SEG188 [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=zpby2_band_coby1 
+  //SEG322 [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=zpby2_band_coby1 
     lda y
     and #7
     sta _6
-  //SEG189 [104] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- zpby1=_lo_zpptrby1 
+  //SEG323 [174] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- zpby1=_lo_zpptrby1 
     lda yoffs
     sta _7
-  //SEG190 [105] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- zpby1=zpby2_bor_zpby3 
+  //SEG324 [175] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- zpby1=zpby2_bor_zpby3 
     lda _6
     ora _7
     sta _8
-  //SEG191 [106] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_zpby1=zpby2 
+  //SEG325 [176] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_zpby1=zpby2 
     lda _8
     ldx y
     sta plot_ylo,x
-  //SEG192 [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- zpby1=_hi_zpptrby1 
+  //SEG326 [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- zpby1=_hi_zpptrby1 
     lda yoffs+1
     sta _9
-  //SEG193 [108] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_zpby1=zpby2 
+  //SEG327 [178] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_zpby1=zpby2 
     lda _9
     ldx y
     sta plot_yhi,x
-  //SEG194 [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- zpby1=zpby2_band_coby1 
+  //SEG328 [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- zpby1=zpby2_band_coby1 
     lda y
     and #7
     sta _10
-  //SEG195 [110] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- zpby1_neq_coby1_then_la1 
+  //SEG329 [180] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- zpby1_neq_coby1_then_la1 
     lda _10
     cmp #7
     bne b4_from_b3
     jmp b7
-  //SEG196 init_plot_tables::@7
+  //SEG330 init_plot_tables::@7
   b7:
-  //SEG197 [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
+  //SEG331 [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
     lda yoffs
     clc
     adc #<$140
@@ -10606,88 +16541,88 @@ init_plot_tables: {
     lda yoffs+1
     adc #>$140
     sta yoffs+1
-  //SEG198 [112] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
+  //SEG332 [182] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
   b4_from_b3:
   b4_from_b7:
-  //SEG199 [112] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
+  //SEG333 [182] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
     jmp b4
-  //SEG200 init_plot_tables::@4
+  //SEG334 init_plot_tables::@4
   b4:
-  //SEG201 [113] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- zpby1=_inc_zpby1 
+  //SEG335 [183] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- zpby1=_inc_zpby1 
     inc y
-  //SEG202 [114] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- zpby1_neq_0_then_la1 
+  //SEG336 [184] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- zpby1_neq_0_then_la1 
     lda y
     bne b3_from_b4
     jmp breturn
-  //SEG203 init_plot_tables::@return
+  //SEG337 init_plot_tables::@return
   breturn:
-  //SEG204 [115] return  [ ]
+  //SEG338 [185] return  [ ]
     rts
-  //SEG205 init_plot_tables::@10
+  //SEG339 init_plot_tables::@10
   b10:
-  //SEG206 [99] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
+  //SEG340 [169] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
   b2_from_b10:
-  //SEG207 [99] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
+  //SEG341 [169] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
     jmp b2
 }
-//SEG208 init_screen
+//SEG342 init_screen
 init_screen: {
-    .label b = 13
-    .label c = 15
-  //SEG209 [117] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
+    .label b = 34
+    .label c = 36
+  //SEG343 [187] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
   b1_from_init_screen:
-  //SEG210 [117] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
+  //SEG344 [187] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
     lda #<BITMAP
     sta b
     lda #>BITMAP
     sta b+1
     jmp b1
-  //SEG211 [117] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
+  //SEG345 [187] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
   b1_from_b1:
-  //SEG212 [117] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
+  //SEG346 [187] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
     jmp b1
-  //SEG213 init_screen::@1
+  //SEG347 init_screen::@1
   b1:
-  //SEG214 [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
+  //SEG348 [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #0
     sta (b),y
-  //SEG215 [119] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG349 [189] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
     inc b
     bne !+
     inc b+1
   !:
-  //SEG216 [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG350 [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda b+1
     cmp #>BITMAP+$2000
     bne b1_from_b1
     lda b
     cmp #<BITMAP+$2000
     bne b1_from_b1
-  //SEG217 [121] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
+  //SEG351 [191] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
   b2_from_b1:
-  //SEG218 [121] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
+  //SEG352 [191] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
     lda #<SCREEN
     sta c
     lda #>SCREEN
     sta c+1
     jmp b2
-  //SEG219 [121] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
+  //SEG353 [191] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
   b2_from_b2:
-  //SEG220 [121] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
+  //SEG354 [191] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
     jmp b2
-  //SEG221 init_screen::@2
+  //SEG355 init_screen::@2
   b2:
-  //SEG222 [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
+  //SEG356 [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #$14
     sta (c),y
-  //SEG223 [123] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG357 [193] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
     inc c
     bne !+
     inc c+1
   !:
-  //SEG224 [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG358 [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda c+1
     cmp #>SCREEN+$400
     bne b2_from_b2
@@ -10695,217 +16630,366 @@ init_screen: {
     cmp #<SCREEN+$400
     bne b2_from_b2
     jmp breturn
-  //SEG225 init_screen::@return
+  //SEG359 init_screen::@return
   breturn:
-  //SEG226 [125] return  [ ]
+  //SEG360 [195] return  [ ]
     rts
 }
 
 REGISTER UPLIFT POTENTIAL REGISTERS
-Equivalence Class zp ZP_BYTE:46 [ plot::$6 ] has ALU potential.
-Equivalence Class zp ZP_BYTE:51 [ init_plot_tables::$7 ] has ALU potential.
+Equivalence Class zp ZP_BYTE:68 [ plot::$6 ] has ALU potential.
+Equivalence Class zp ZP_BYTE:75 [ init_plot_tables::$7 ] has ALU potential.
 Statement [1] *((const byte*) BGCOL#0) ← (byte) 0 [ ] always clobbers reg byte a 
 Statement [2] *((const byte*) FGCOL#0) ← (byte) 0 [ ] always clobbers reg byte a 
 Statement [3] *((const byte*) D011#0) ← (const byte) BMM#0|(const byte) DEN#0|(const byte) RSEL#0|(byte) 3 [ ] always clobbers reg byte a 
 Statement [4] *((const byte*) D018#0) ← (byte) 24 [ ] always clobbers reg byte a 
 Statement [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] always clobbers reg byte a 
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:21 [ line::x0#0 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:22 [ line::x1#0 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:23 [ line::y0#0 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:24 [ line::y1#0 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:42 [ line::x0#0 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:43 [ line::x1#0 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:44 [ line::y0#0 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:45 [ line::y1#0 ]
 Removing always clobbered register reg byte a as potential for zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ]
-Statement [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] always clobbers reg byte a 
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:25 [ line::xd#1 ]
-Statement [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] always clobbers reg byte a 
-Statement [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ] always clobbers reg byte a 
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:3 [ plot::x#9 plot::x#6 plot::x#1 plot::x#3 plot::x#0 plot::x#5 plot::x#7 plot::x#2 plot::x#4 plot::x#8 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:4 [ plot::y#9 plot::y#6 plot::y#1 plot::y#3 plot::y#0 plot::y#5 plot::y#7 plot::y#2 plot::y#4 plot::y#8 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:27 [ line_xdyi::x1#0 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:28 [ line_xdyi::xd#0 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:29 [ line_xdyi::yd#0 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:5 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:6 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:7 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
-Statement [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ] always clobbers reg byte a 
-Statement [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ] always clobbers reg byte a 
-Statement [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ] always clobbers reg byte a reg byte y 
-Removing always clobbered register reg byte y as potential for zp ZP_BYTE:3 [ plot::x#9 plot::x#6 plot::x#1 plot::x#3 plot::x#0 plot::x#5 plot::x#7 plot::x#2 plot::x#4 plot::x#8 ]
-Removing always clobbered register reg byte y as potential for zp ZP_BYTE:22 [ line::x1#0 ]
-Removing always clobbered register reg byte y as potential for zp ZP_BYTE:24 [ line::y1#0 ]
+Statement [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] always clobbers reg byte a 
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:46 [ line::xd#1 ]
+Statement [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] always clobbers reg byte a 
+Statement [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] always clobbers reg byte a 
+Statement [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] always clobbers reg byte a 
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:49 [ line::xd#0 ]
+Statement [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] always clobbers reg byte a 
+Statement [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ] always clobbers reg byte a 
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:7 [ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:6 [ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ]
+Statement [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ] always clobbers reg byte a 
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:9 [ plot::x#4 plot::x#1 plot::x#0 plot::x#3 plot::x#2 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:10 [ plot::y#4 plot::y#1 plot::y#0 plot::y#3 plot::y#2 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:11 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:12 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:13 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:14 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:15 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:16 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:17 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:18 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:19 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:20 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:21 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:22 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:23 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:24 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:25 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:26 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:27 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:28 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ]
+Statement [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ] always clobbers reg byte a 
+Statement [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ] always clobbers reg byte a 
+Statement [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ] always clobbers reg byte a reg byte y 
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:9 [ plot::x#4 plot::x#1 plot::x#0 plot::x#3 plot::x#2 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:6 [ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:7 [ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ]
 Removing always clobbered register reg byte y as potential for zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ]
-Removing always clobbered register reg byte y as potential for zp ZP_BYTE:27 [ line_xdyi::x1#0 ]
-Removing always clobbered register reg byte y as potential for zp ZP_BYTE:28 [ line_xdyi::xd#0 ]
-Removing always clobbered register reg byte y as potential for zp ZP_BYTE:29 [ line_xdyi::yd#0 ]
-Removing always clobbered register reg byte y as potential for zp ZP_BYTE:5 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ]
-Removing always clobbered register reg byte y as potential for zp ZP_BYTE:6 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ]
-Removing always clobbered register reg byte y as potential for zp ZP_BYTE:7 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
-Statement [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] always clobbers reg byte y 
-Statement [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ] always clobbers reg byte a 
-Statement [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] always clobbers reg byte a 
-Statement [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ] always clobbers reg byte a 
-Statement [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] always clobbers reg byte a 
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:8 [ init_plot_tables::x#2 init_plot_tables::x#1 ]
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:9 [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ]
-Statement [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] always clobbers reg byte a 
-Statement [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] always clobbers reg byte a 
-Statement [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] always clobbers reg byte a 
-Removing always clobbered register reg byte a as potential for zp ZP_BYTE:10 [ init_plot_tables::y#2 init_plot_tables::y#1 ]
-Statement [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] always clobbers reg byte a 
-Statement [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] always clobbers reg byte a 
-Statement [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] always clobbers reg byte a 
-Statement [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] always clobbers reg byte a reg byte y 
-Statement [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] always clobbers reg byte a 
-Statement [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] always clobbers reg byte a reg byte y 
-Statement [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] always clobbers reg byte a 
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:11 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:12 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:13 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:14 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:15 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:16 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:17 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:18 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:19 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:20 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:21 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:22 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:23 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:24 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:25 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:26 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:27 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ]
+Removing always clobbered register reg byte y as potential for zp ZP_BYTE:28 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ]
+Statement [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] always clobbers reg byte y 
+Statement [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ] always clobbers reg byte a 
+Statement [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] always clobbers reg byte a 
+Statement [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ] always clobbers reg byte a 
+Statement [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ] always clobbers reg byte a 
+Statement [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] always clobbers reg byte a 
+Statement [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ] always clobbers reg byte a 
+Statement [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ] always clobbers reg byte a 
+Statement [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] always clobbers reg byte a 
+Statement [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ] always clobbers reg byte a 
+Statement [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] always clobbers reg byte a 
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:29 [ init_plot_tables::x#2 init_plot_tables::x#1 ]
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:30 [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ]
+Statement [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] always clobbers reg byte a 
+Statement [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] always clobbers reg byte a 
+Statement [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] always clobbers reg byte a 
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:31 [ init_plot_tables::y#2 init_plot_tables::y#1 ]
+Statement [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] always clobbers reg byte a 
+Statement [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] always clobbers reg byte a 
+Statement [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] always clobbers reg byte a 
+Statement [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] always clobbers reg byte a reg byte y 
+Statement [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] always clobbers reg byte a 
+Statement [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] always clobbers reg byte a reg byte y 
+Statement [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] always clobbers reg byte a 
 Statement [1] *((const byte*) BGCOL#0) ← (byte) 0 [ ] always clobbers reg byte a 
 Statement [2] *((const byte*) FGCOL#0) ← (byte) 0 [ ] always clobbers reg byte a 
 Statement [3] *((const byte*) D011#0) ← (const byte) BMM#0|(const byte) DEN#0|(const byte) RSEL#0|(byte) 3 [ ] always clobbers reg byte a 
 Statement [4] *((const byte*) D018#0) ← (byte) 24 [ ] always clobbers reg byte a 
 Statement [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] always clobbers reg byte a 
-Statement [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] always clobbers reg byte a 
-Statement [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] always clobbers reg byte a 
-Statement [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ] always clobbers reg byte a 
-Statement [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ] always clobbers reg byte a 
-Statement [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ] always clobbers reg byte a 
-Statement [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ] always clobbers reg byte a reg byte y 
-Statement [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] always clobbers reg byte y 
-Statement [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ] always clobbers reg byte a 
-Statement [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] always clobbers reg byte a 
-Statement [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ] always clobbers reg byte a 
-Statement [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] always clobbers reg byte a 
-Statement [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] always clobbers reg byte a 
-Statement [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] always clobbers reg byte a 
-Statement [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] always clobbers reg byte a 
-Statement [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] always clobbers reg byte a 
-Statement [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] always clobbers reg byte a 
-Statement [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] always clobbers reg byte a 
-Statement [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] always clobbers reg byte a reg byte y 
-Statement [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] always clobbers reg byte a 
-Statement [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] always clobbers reg byte a reg byte y 
-Statement [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] always clobbers reg byte a 
+Statement [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] always clobbers reg byte a 
+Statement [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] always clobbers reg byte a 
+Statement [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] always clobbers reg byte a 
+Statement [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] always clobbers reg byte a 
+Statement [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] always clobbers reg byte a 
+Statement [87] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ] always clobbers reg byte a 
+Statement [93] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] always clobbers reg byte a 
+Statement [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ] always clobbers reg byte a 
+Statement [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ] always clobbers reg byte a 
+Statement [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ] always clobbers reg byte a 
+Statement [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ] always clobbers reg byte a 
+Statement [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ] always clobbers reg byte a reg byte y 
+Statement [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] always clobbers reg byte y 
+Statement [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ] always clobbers reg byte a 
+Statement [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] always clobbers reg byte a 
+Statement [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ] always clobbers reg byte a 
+Statement [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ] always clobbers reg byte a 
+Statement [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] always clobbers reg byte a 
+Statement [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ] always clobbers reg byte a 
+Statement [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ] always clobbers reg byte a 
+Statement [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] always clobbers reg byte a 
+Statement [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ] always clobbers reg byte a 
+Statement [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] always clobbers reg byte a 
+Statement [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] always clobbers reg byte a 
+Statement [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] always clobbers reg byte a 
+Statement [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] always clobbers reg byte a 
+Statement [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] always clobbers reg byte a 
+Statement [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] always clobbers reg byte a 
+Statement [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] always clobbers reg byte a 
+Statement [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] always clobbers reg byte a reg byte y 
+Statement [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] always clobbers reg byte a 
+Statement [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] always clobbers reg byte a reg byte y 
+Statement [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] always clobbers reg byte a 
 Potential registers zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ] : zp ZP_BYTE:2 , reg byte x , 
-Potential registers zp ZP_BYTE:3 [ plot::x#9 plot::x#6 plot::x#1 plot::x#3 plot::x#0 plot::x#5 plot::x#7 plot::x#2 plot::x#4 plot::x#8 ] : zp ZP_BYTE:3 , reg byte x , 
-Potential registers zp ZP_BYTE:4 [ plot::y#9 plot::y#6 plot::y#1 plot::y#3 plot::y#0 plot::y#5 plot::y#7 plot::y#2 plot::y#4 plot::y#8 ] : zp ZP_BYTE:4 , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:5 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ] : zp ZP_BYTE:5 , reg byte x , 
-Potential registers zp ZP_BYTE:6 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ] : zp ZP_BYTE:6 , reg byte x , 
-Potential registers zp ZP_BYTE:7 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ] : zp ZP_BYTE:7 , reg byte x , 
-Potential registers zp ZP_BYTE:8 [ init_plot_tables::x#2 init_plot_tables::x#1 ] : zp ZP_BYTE:8 , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:9 [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ] : zp ZP_BYTE:9 , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:10 [ init_plot_tables::y#2 init_plot_tables::y#1 ] : zp ZP_BYTE:10 , reg byte x , reg byte y , 
-Potential registers zp ZP_PTR_BYTE:11 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 ] : zp ZP_PTR_BYTE:11 , 
-Potential registers zp ZP_PTR_BYTE:13 [ init_screen::b#2 init_screen::b#1 ] : zp ZP_PTR_BYTE:13 , 
-Potential registers zp ZP_PTR_BYTE:15 [ init_screen::c#2 init_screen::c#1 ] : zp ZP_PTR_BYTE:15 , 
-Potential registers zp ZP_BYTE:17 [ lines::$0 ] : zp ZP_BYTE:17 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:18 [ lines::$2 ] : zp ZP_BYTE:18 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:19 [ lines::$3 ] : zp ZP_BYTE:19 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:20 [ lines::$5 ] : zp ZP_BYTE:20 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:21 [ line::x0#0 ] : zp ZP_BYTE:21 , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:22 [ line::x1#0 ] : zp ZP_BYTE:22 , reg byte x , 
-Potential registers zp ZP_BYTE:23 [ line::y0#0 ] : zp ZP_BYTE:23 , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:24 [ line::y1#0 ] : zp ZP_BYTE:24 , reg byte x , 
-Potential registers zp ZP_BYTE:25 [ line::xd#1 ] : zp ZP_BYTE:25 , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:26 [ line::yd#0 ] : zp ZP_BYTE:26 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:27 [ line_xdyi::x1#0 ] : zp ZP_BYTE:27 , reg byte x , 
-Potential registers zp ZP_BYTE:28 [ line_xdyi::xd#0 ] : zp ZP_BYTE:28 , reg byte x , 
-Potential registers zp ZP_BYTE:29 [ line_xdyi::yd#0 ] : zp ZP_BYTE:29 , reg byte x , 
-Potential registers zp ZP_BYTE:30 [ line::xd#0 ] : zp ZP_BYTE:30 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:31 [ plot::$0 ] : zp ZP_BYTE:31 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_PTR_BYTE:32 [ plot::plotter_x#1 ] : zp ZP_PTR_BYTE:32 , 
-Potential registers zp ZP_BYTE:34 [ plot::$1 ] : zp ZP_BYTE:34 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_PTR_BYTE:35 [ plot::plotter_x#2 ] : zp ZP_PTR_BYTE:35 , 
-Potential registers zp ZP_BYTE:37 [ plot::$2 ] : zp ZP_BYTE:37 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_PTR_BYTE:38 [ plot::plotter_y#1 ] : zp ZP_PTR_BYTE:38 , 
-Potential registers zp ZP_BYTE:40 [ plot::$3 ] : zp ZP_BYTE:40 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_PTR_BYTE:41 [ plot::plotter_y#2 ] : zp ZP_PTR_BYTE:41 , 
-Potential registers zp ZP_PTR_BYTE:43 [ plot::plotter#0 ] : zp ZP_PTR_BYTE:43 , 
-Potential registers zp ZP_BYTE:45 [ plot::$5 ] : zp ZP_BYTE:45 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:46 [ plot::$6 ] : zp ZP_BYTE:46 , reg byte a , reg byte x , reg byte y , reg byte alu , 
-Potential registers zp ZP_BYTE:47 [ plot::$7 ] : zp ZP_BYTE:47 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:48 [ line_xdyi::$8 ] : zp ZP_BYTE:48 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:49 [ init_plot_tables::$0 ] : zp ZP_BYTE:49 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:50 [ init_plot_tables::$6 ] : zp ZP_BYTE:50 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:51 [ init_plot_tables::$7 ] : zp ZP_BYTE:51 , reg byte a , reg byte x , reg byte y , reg byte alu , 
-Potential registers zp ZP_BYTE:52 [ init_plot_tables::$8 ] : zp ZP_BYTE:52 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:53 [ init_plot_tables::$9 ] : zp ZP_BYTE:53 , reg byte a , reg byte x , reg byte y , 
-Potential registers zp ZP_BYTE:54 [ init_plot_tables::$10 ] : zp ZP_BYTE:54 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ] : zp ZP_BYTE:3 , reg byte x , 
+Potential registers zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ] : zp ZP_BYTE:4 , reg byte x , 
+Potential registers zp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ] : zp ZP_BYTE:5 , reg byte x , 
+Potential registers zp ZP_BYTE:6 [ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ] : zp ZP_BYTE:6 , reg byte x , 
+Potential registers zp ZP_BYTE:7 [ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ] : zp ZP_BYTE:7 , reg byte x , 
+Potential registers zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ] : zp ZP_BYTE:8 , reg byte x , 
+Potential registers zp ZP_BYTE:9 [ plot::x#4 plot::x#1 plot::x#0 plot::x#3 plot::x#2 ] : zp ZP_BYTE:9 , reg byte x , 
+Potential registers zp ZP_BYTE:10 [ plot::y#4 plot::y#1 plot::y#0 plot::y#3 plot::y#2 ] : zp ZP_BYTE:10 , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:11 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ] : zp ZP_BYTE:11 , reg byte x , 
+Potential registers zp ZP_BYTE:12 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ] : zp ZP_BYTE:12 , reg byte x , 
+Potential registers zp ZP_BYTE:13 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ] : zp ZP_BYTE:13 , reg byte x , 
+Potential registers zp ZP_BYTE:14 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ] : zp ZP_BYTE:14 , reg byte x , 
+Potential registers zp ZP_BYTE:15 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ] : zp ZP_BYTE:15 , reg byte x , 
+Potential registers zp ZP_BYTE:16 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ] : zp ZP_BYTE:16 , reg byte x , 
+Potential registers zp ZP_BYTE:17 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ] : zp ZP_BYTE:17 , reg byte x , 
+Potential registers zp ZP_BYTE:18 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ] : zp ZP_BYTE:18 , reg byte x , 
+Potential registers zp ZP_BYTE:19 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ] : zp ZP_BYTE:19 , reg byte x , 
+Potential registers zp ZP_BYTE:20 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ] : zp ZP_BYTE:20 , reg byte x , 
+Potential registers zp ZP_BYTE:21 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ] : zp ZP_BYTE:21 , reg byte x , 
+Potential registers zp ZP_BYTE:22 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ] : zp ZP_BYTE:22 , reg byte x , 
+Potential registers zp ZP_BYTE:23 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ] : zp ZP_BYTE:23 , reg byte x , 
+Potential registers zp ZP_BYTE:24 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ] : zp ZP_BYTE:24 , reg byte x , 
+Potential registers zp ZP_BYTE:25 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ] : zp ZP_BYTE:25 , reg byte x , 
+Potential registers zp ZP_BYTE:26 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ] : zp ZP_BYTE:26 , reg byte x , 
+Potential registers zp ZP_BYTE:27 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ] : zp ZP_BYTE:27 , reg byte x , 
+Potential registers zp ZP_BYTE:28 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ] : zp ZP_BYTE:28 , reg byte x , 
+Potential registers zp ZP_BYTE:29 [ init_plot_tables::x#2 init_plot_tables::x#1 ] : zp ZP_BYTE:29 , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:30 [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ] : zp ZP_BYTE:30 , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:31 [ init_plot_tables::y#2 init_plot_tables::y#1 ] : zp ZP_BYTE:31 , reg byte x , reg byte y , 
+Potential registers zp ZP_PTR_BYTE:32 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 ] : zp ZP_PTR_BYTE:32 , 
+Potential registers zp ZP_PTR_BYTE:34 [ init_screen::b#2 init_screen::b#1 ] : zp ZP_PTR_BYTE:34 , 
+Potential registers zp ZP_PTR_BYTE:36 [ init_screen::c#2 init_screen::c#1 ] : zp ZP_PTR_BYTE:36 , 
+Potential registers zp ZP_BYTE:38 [ lines::$0 ] : zp ZP_BYTE:38 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:39 [ lines::$2 ] : zp ZP_BYTE:39 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:40 [ lines::$3 ] : zp ZP_BYTE:40 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:41 [ lines::$5 ] : zp ZP_BYTE:41 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:42 [ line::x0#0 ] : zp ZP_BYTE:42 , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:43 [ line::x1#0 ] : zp ZP_BYTE:43 , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:44 [ line::y0#0 ] : zp ZP_BYTE:44 , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:45 [ line::y1#0 ] : zp ZP_BYTE:45 , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:46 [ line::xd#1 ] : zp ZP_BYTE:46 , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:47 [ line::yd#1 ] : zp ZP_BYTE:47 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:48 [ line::yd#0 ] : zp ZP_BYTE:48 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:49 [ line::xd#0 ] : zp ZP_BYTE:49 , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:50 [ line::yd#3 ] : zp ZP_BYTE:50 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:51 [ line::yd#10 ] : zp ZP_BYTE:51 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:52 [ line_ydxi::$8 ] : zp ZP_BYTE:52 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:53 [ plot::$0 ] : zp ZP_BYTE:53 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_PTR_BYTE:54 [ plot::plotter_x#1 ] : zp ZP_PTR_BYTE:54 , 
+Potential registers zp ZP_BYTE:56 [ plot::$1 ] : zp ZP_BYTE:56 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_PTR_BYTE:57 [ plot::plotter_x#2 ] : zp ZP_PTR_BYTE:57 , 
+Potential registers zp ZP_BYTE:59 [ plot::$2 ] : zp ZP_BYTE:59 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_PTR_BYTE:60 [ plot::plotter_y#1 ] : zp ZP_PTR_BYTE:60 , 
+Potential registers zp ZP_BYTE:62 [ plot::$3 ] : zp ZP_BYTE:62 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_PTR_BYTE:63 [ plot::plotter_y#2 ] : zp ZP_PTR_BYTE:63 , 
+Potential registers zp ZP_PTR_BYTE:65 [ plot::plotter#0 ] : zp ZP_PTR_BYTE:65 , 
+Potential registers zp ZP_BYTE:67 [ plot::$5 ] : zp ZP_BYTE:67 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:68 [ plot::$6 ] : zp ZP_BYTE:68 , reg byte a , reg byte x , reg byte y , reg byte alu , 
+Potential registers zp ZP_BYTE:69 [ plot::$7 ] : zp ZP_BYTE:69 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:70 [ line_xdyi::$8 ] : zp ZP_BYTE:70 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:71 [ line_ydxd::$8 ] : zp ZP_BYTE:71 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:72 [ line_xdyd::$8 ] : zp ZP_BYTE:72 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:73 [ init_plot_tables::$0 ] : zp ZP_BYTE:73 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:74 [ init_plot_tables::$6 ] : zp ZP_BYTE:74 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:75 [ init_plot_tables::$7 ] : zp ZP_BYTE:75 , reg byte a , reg byte x , reg byte y , reg byte alu , 
+Potential registers zp ZP_BYTE:76 [ init_plot_tables::$8 ] : zp ZP_BYTE:76 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:77 [ init_plot_tables::$9 ] : zp ZP_BYTE:77 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:78 [ init_plot_tables::$10 ] : zp ZP_BYTE:78 , reg byte a , reg byte x , reg byte y , 
 
 REGISTER UPLIFT SCOPES
-Uplift Scope [lines] 212.1: zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ] 50.5: zp ZP_BYTE:17 [ lines::$0 ] 50.5: zp ZP_BYTE:18 [ lines::$2 ] 50.5: zp ZP_BYTE:19 [ lines::$3 ] 50.5: zp ZP_BYTE:20 [ lines::$5 ] 
-Uplift Scope [init_plot_tables] 46.93: zp ZP_BYTE:9 [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ] 39.11: zp ZP_PTR_BYTE:11 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 ] 24.75: zp ZP_BYTE:8 [ init_plot_tables::x#2 init_plot_tables::x#1 ] 22.5: zp ZP_BYTE:10 [ init_plot_tables::y#2 init_plot_tables::y#1 ] 22: zp ZP_BYTE:49 [ init_plot_tables::$0 ] 22: zp ZP_BYTE:51 [ init_plot_tables::$7 ] 22: zp ZP_BYTE:52 [ init_plot_tables::$8 ] 22: zp ZP_BYTE:53 [ init_plot_tables::$9 ] 22: zp ZP_BYTE:54 [ init_plot_tables::$10 ] 11: zp ZP_BYTE:50 [ init_plot_tables::$6 ] 
-Uplift Scope [line_xdyi] 56.47: zp ZP_BYTE:7 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ] 29.37: zp ZP_BYTE:6 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ] 22: zp ZP_BYTE:48 [ line_xdyi::$8 ] 13.54: zp ZP_BYTE:5 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ] 1.6: zp ZP_BYTE:28 [ line_xdyi::xd#0 ] 1.07: zp ZP_BYTE:29 [ line_xdyi::yd#0 ] 0.81: zp ZP_BYTE:27 [ line_xdyi::x1#0 ] 
-Uplift Scope [plot] 58.43: zp ZP_BYTE:4 [ plot::y#9 plot::y#6 plot::y#1 plot::y#3 plot::y#0 plot::y#5 plot::y#7 plot::y#2 plot::y#4 plot::y#8 ] 30: zp ZP_BYTE:3 [ plot::x#9 plot::x#6 plot::x#1 plot::x#3 plot::x#0 plot::x#5 plot::x#7 plot::x#2 plot::x#4 plot::x#8 ] 4: zp ZP_BYTE:31 [ plot::$0 ] 4: zp ZP_BYTE:34 [ plot::$1 ] 4: zp ZP_BYTE:37 [ plot::$2 ] 4: zp ZP_BYTE:40 [ plot::$3 ] 4: zp ZP_PTR_BYTE:41 [ plot::plotter_y#2 ] 4: zp ZP_BYTE:46 [ plot::$6 ] 4: zp ZP_BYTE:47 [ plot::$7 ] 2: zp ZP_PTR_BYTE:32 [ plot::plotter_x#1 ] 2: zp ZP_PTR_BYTE:38 [ plot::plotter_y#1 ] 2: zp ZP_BYTE:45 [ plot::$5 ] 1.5: zp ZP_PTR_BYTE:43 [ plot::plotter#0 ] 0.8: zp ZP_PTR_BYTE:35 [ plot::plotter_x#2 ] 
-Uplift Scope [init_screen] 33: zp ZP_PTR_BYTE:13 [ init_screen::b#2 init_screen::b#1 ] 33: zp ZP_PTR_BYTE:15 [ init_screen::c#2 init_screen::c#1 ] 
-Uplift Scope [line] 20: zp ZP_BYTE:30 [ line::xd#0 ] 10.64: zp ZP_BYTE:21 [ line::x0#0 ] 8.36: zp ZP_BYTE:23 [ line::y0#0 ] 4.87: zp ZP_BYTE:22 [ line::x1#0 ] 4.79: zp ZP_BYTE:24 [ line::y1#0 ] 1: zp ZP_BYTE:26 [ line::yd#0 ] 0.86: zp ZP_BYTE:25 [ line::xd#1 ] 
+Uplift Scope [lines] 212.1: zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ] 50.5: zp ZP_BYTE:38 [ lines::$0 ] 50.5: zp ZP_BYTE:39 [ lines::$2 ] 50.5: zp ZP_BYTE:40 [ lines::$3 ] 50.5: zp ZP_BYTE:41 [ lines::$5 ] 
+Uplift Scope [init_plot_tables] 46.93: zp ZP_BYTE:30 [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ] 39.11: zp ZP_PTR_BYTE:32 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 ] 24.75: zp ZP_BYTE:29 [ init_plot_tables::x#2 init_plot_tables::x#1 ] 22.5: zp ZP_BYTE:31 [ init_plot_tables::y#2 init_plot_tables::y#1 ] 22: zp ZP_BYTE:73 [ init_plot_tables::$0 ] 22: zp ZP_BYTE:75 [ init_plot_tables::$7 ] 22: zp ZP_BYTE:76 [ init_plot_tables::$8 ] 22: zp ZP_BYTE:77 [ init_plot_tables::$9 ] 22: zp ZP_BYTE:78 [ init_plot_tables::$10 ] 11: zp ZP_BYTE:74 [ init_plot_tables::$6 ] 
+Uplift Scope [plot] 94.86: zp ZP_BYTE:10 [ plot::y#4 plot::y#1 plot::y#0 plot::y#3 plot::y#2 ] 48.55: zp ZP_BYTE:9 [ plot::x#4 plot::x#1 plot::x#0 plot::x#3 plot::x#2 ] 4: zp ZP_BYTE:53 [ plot::$0 ] 4: zp ZP_BYTE:56 [ plot::$1 ] 4: zp ZP_BYTE:59 [ plot::$2 ] 4: zp ZP_BYTE:62 [ plot::$3 ] 4: zp ZP_PTR_BYTE:63 [ plot::plotter_y#2 ] 4: zp ZP_BYTE:68 [ plot::$6 ] 4: zp ZP_BYTE:69 [ plot::$7 ] 2: zp ZP_PTR_BYTE:54 [ plot::plotter_x#1 ] 2: zp ZP_PTR_BYTE:60 [ plot::plotter_y#1 ] 2: zp ZP_BYTE:67 [ plot::$5 ] 1.5: zp ZP_PTR_BYTE:65 [ plot::plotter#0 ] 0.8: zp ZP_PTR_BYTE:57 [ plot::plotter_x#2 ] 
+Uplift Scope [line_xdyi] 56.47: zp ZP_BYTE:16 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ] 33.57: zp ZP_BYTE:15 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ] 22: zp ZP_BYTE:70 [ line_xdyi::$8 ] 17.48: zp ZP_BYTE:14 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ] 9.21: zp ZP_BYTE:11 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ] 5.86: zp ZP_BYTE:12 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ] 3.74: zp ZP_BYTE:13 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ] 
+Uplift Scope [line_xdyd] 56.47: zp ZP_BYTE:28 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ] 33.57: zp ZP_BYTE:27 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ] 22: zp ZP_BYTE:72 [ line_xdyd::$8 ] 17.48: zp ZP_BYTE:26 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ] 9.21: zp ZP_BYTE:23 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ] 5.86: zp ZP_BYTE:24 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ] 3.74: zp ZP_BYTE:25 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ] 
+Uplift Scope [line_ydxi] 56.47: zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ] 33.57: zp ZP_BYTE:6 [ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ] 22: zp ZP_BYTE:52 [ line_ydxi::$8 ] 17.48: zp ZP_BYTE:7 [ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ] 9.21: zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ] 5.86: zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ] 3.74: zp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ] 
+Uplift Scope [line_ydxd] 56.47: zp ZP_BYTE:22 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ] 33.57: zp ZP_BYTE:20 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ] 22: zp ZP_BYTE:71 [ line_ydxd::$8 ] 17.48: zp ZP_BYTE:21 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ] 9.21: zp ZP_BYTE:17 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ] 5.86: zp ZP_BYTE:18 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ] 3.74: zp ZP_BYTE:19 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ] 
+Uplift Scope [init_screen] 33: zp ZP_PTR_BYTE:34 [ init_screen::b#2 init_screen::b#1 ] 33: zp ZP_PTR_BYTE:36 [ init_screen::c#2 init_screen::c#1 ] 
+Uplift Scope [line] 6.25: zp ZP_BYTE:45 [ line::y1#0 ] 5.95: zp ZP_BYTE:44 [ line::y0#0 ] 5.41: zp ZP_BYTE:43 [ line::x1#0 ] 5.17: zp ZP_BYTE:42 [ line::x0#0 ] 0.89: zp ZP_BYTE:47 [ line::yd#1 ] 0.89: zp ZP_BYTE:48 [ line::yd#0 ] 0.89: zp ZP_BYTE:50 [ line::yd#3 ] 0.89: zp ZP_BYTE:51 [ line::yd#10 ] 0.7: zp ZP_BYTE:46 [ line::xd#1 ] 0.7: zp ZP_BYTE:49 [ line::xd#0 ] 
 Uplift Scope [main] 
 Uplift Scope [] 
 
-Uplifting [lines] best 14052 combination zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ] reg byte y [ lines::$0 ] zp ZP_BYTE:18 [ lines::$2 ] zp ZP_BYTE:19 [ lines::$3 ] reg byte x [ lines::$5 ] 
+Uplifting [lines] best 16782 combination zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ] reg byte y [ lines::$0 ] zp ZP_BYTE:39 [ lines::$2 ] zp ZP_BYTE:40 [ lines::$3 ] reg byte x [ lines::$5 ] 
 Uplift attempts [init_plot_tables] 10000/138240 (limiting to 10000)
-Uplifting [init_plot_tables] best 13422 combination reg byte y [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ] zp ZP_PTR_BYTE:11 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 ] reg byte x [ init_plot_tables::x#2 init_plot_tables::x#1 ] reg byte x [ init_plot_tables::y#2 init_plot_tables::y#1 ] reg byte a [ init_plot_tables::$0 ] reg byte a [ init_plot_tables::$7 ] reg byte a [ init_plot_tables::$8 ] reg byte a [ init_plot_tables::$9 ] zp ZP_BYTE:54 [ init_plot_tables::$10 ] zp ZP_BYTE:50 [ init_plot_tables::$6 ] 
+Uplifting [init_plot_tables] best 16152 combination reg byte y [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ] zp ZP_PTR_BYTE:32 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 ] reg byte x [ init_plot_tables::x#2 init_plot_tables::x#1 ] reg byte x [ init_plot_tables::y#2 init_plot_tables::y#1 ] reg byte a [ init_plot_tables::$0 ] reg byte a [ init_plot_tables::$7 ] reg byte a [ init_plot_tables::$8 ] reg byte a [ init_plot_tables::$9 ] zp ZP_BYTE:78 [ init_plot_tables::$10 ] zp ZP_BYTE:74 [ init_plot_tables::$6 ] 
 Limited combination testing to 10000 combinations of 138240 possible.
-Uplifting [line_xdyi] best 13362 combination zp ZP_BYTE:7 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ] zp ZP_BYTE:6 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ] reg byte a [ line_xdyi::$8 ] zp ZP_BYTE:5 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ] zp ZP_BYTE:28 [ line_xdyi::xd#0 ] zp ZP_BYTE:29 [ line_xdyi::yd#0 ] zp ZP_BYTE:27 [ line_xdyi::x1#0 ] 
 Uplift attempts [plot] 10000/122880 (limiting to 10000)
-Uplifting [plot] best 13203 combination reg byte y [ plot::y#9 plot::y#6 plot::y#1 plot::y#3 plot::y#0 plot::y#5 plot::y#7 plot::y#2 plot::y#4 plot::y#8 ] reg byte x [ plot::x#9 plot::x#6 plot::x#1 plot::x#3 plot::x#0 plot::x#5 plot::x#7 plot::x#2 plot::x#4 plot::x#8 ] reg byte a [ plot::$0 ] reg byte a [ plot::$1 ] reg byte a [ plot::$2 ] reg byte a [ plot::$3 ] zp ZP_PTR_BYTE:41 [ plot::plotter_y#2 ] reg byte a [ plot::$6 ] reg byte a [ plot::$7 ] zp ZP_PTR_BYTE:32 [ plot::plotter_x#1 ] zp ZP_PTR_BYTE:38 [ plot::plotter_y#1 ] zp ZP_BYTE:45 [ plot::$5 ] zp ZP_PTR_BYTE:43 [ plot::plotter#0 ] zp ZP_PTR_BYTE:35 [ plot::plotter_x#2 ] 
+Uplifting [plot] best 15861 combination reg byte y [ plot::y#4 plot::y#1 plot::y#0 plot::y#3 plot::y#2 ] reg byte x [ plot::x#4 plot::x#1 plot::x#0 plot::x#3 plot::x#2 ] reg byte a [ plot::$0 ] reg byte a [ plot::$1 ] reg byte a [ plot::$2 ] reg byte a [ plot::$3 ] zp ZP_PTR_BYTE:63 [ plot::plotter_y#2 ] reg byte a [ plot::$6 ] reg byte a [ plot::$7 ] zp ZP_PTR_BYTE:54 [ plot::plotter_x#1 ] zp ZP_PTR_BYTE:60 [ plot::plotter_y#1 ] zp ZP_BYTE:67 [ plot::$5 ] zp ZP_PTR_BYTE:65 [ plot::plotter#0 ] zp ZP_PTR_BYTE:57 [ plot::plotter_x#2 ] 
 Limited combination testing to 10000 combinations of 122880 possible.
-Uplifting [init_screen] best 13203 combination zp ZP_PTR_BYTE:13 [ init_screen::b#2 init_screen::b#1 ] zp ZP_PTR_BYTE:15 [ init_screen::c#2 init_screen::c#1 ] 
-Uplifting [line] best 12875 combination reg byte a [ line::xd#0 ] zp ZP_BYTE:21 [ line::x0#0 ] reg byte y [ line::y0#0 ] zp ZP_BYTE:22 [ line::x1#0 ] zp ZP_BYTE:24 [ line::y1#0 ] reg byte x [ line::yd#0 ] zp ZP_BYTE:25 [ line::xd#1 ] 
-Uplifting [main] best 12875 combination 
-Uplifting [] best 12875 combination 
+Uplifting [line_xdyi] best 15801 combination zp ZP_BYTE:16 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ] zp ZP_BYTE:15 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ] reg byte a [ line_xdyi::$8 ] zp ZP_BYTE:14 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ] zp ZP_BYTE:11 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ] zp ZP_BYTE:12 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ] zp ZP_BYTE:13 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ] 
+Uplifting [line_xdyd] best 15741 combination zp ZP_BYTE:28 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ] zp ZP_BYTE:27 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ] reg byte a [ line_xdyd::$8 ] zp ZP_BYTE:26 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ] zp ZP_BYTE:23 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ] zp ZP_BYTE:24 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ] zp ZP_BYTE:25 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ] 
+Uplifting [line_ydxi] best 15681 combination zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ] zp ZP_BYTE:6 [ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ] reg byte a [ line_ydxi::$8 ] zp ZP_BYTE:7 [ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ] zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ] zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ] zp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ] 
+Uplifting [line_ydxd] best 15621 combination zp ZP_BYTE:22 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ] zp ZP_BYTE:20 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ] reg byte a [ line_ydxd::$8 ] zp ZP_BYTE:21 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ] zp ZP_BYTE:17 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ] zp ZP_BYTE:18 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ] zp ZP_BYTE:19 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ] 
+Uplifting [init_screen] best 15621 combination zp ZP_PTR_BYTE:34 [ init_screen::b#2 init_screen::b#1 ] zp ZP_PTR_BYTE:36 [ init_screen::c#2 init_screen::c#1 ] 
+Uplift attempts [line] 10000/186624 (limiting to 10000)
+Uplifting [line] best 14982 combination reg byte x [ line::y1#0 ] zp ZP_BYTE:44 [ line::y0#0 ] reg byte y [ line::x1#0 ] zp ZP_BYTE:42 [ line::x0#0 ] zp ZP_BYTE:47 [ line::yd#1 ] zp ZP_BYTE:48 [ line::yd#0 ] zp ZP_BYTE:50 [ line::yd#3 ] zp ZP_BYTE:51 [ line::yd#10 ] zp ZP_BYTE:46 [ line::xd#1 ] zp ZP_BYTE:49 [ line::xd#0 ] 
+Limited combination testing to 10000 combinations of 186624 possible.
+Uplifting [main] best 14982 combination 
+Uplifting [] best 14982 combination 
 Attempting to uplift remaining variables inzp ZP_BYTE:2 [ lines::l#2 lines::l#1 ]
-Uplifting [lines] best 12875 combination zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:7 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
-Uplifting [line_xdyi] best 12875 combination zp ZP_BYTE:7 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:18 [ lines::$2 ]
-Uplifting [lines] best 12875 combination zp ZP_BYTE:18 [ lines::$2 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:19 [ lines::$3 ]
-Uplifting [lines] best 12875 combination zp ZP_BYTE:19 [ lines::$3 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:6 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ]
-Uplifting [line_xdyi] best 12875 combination zp ZP_BYTE:6 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:54 [ init_plot_tables::$10 ]
-Uplifting [init_plot_tables] best 12815 combination reg byte a [ init_plot_tables::$10 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:5 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ]
-Uplifting [line_xdyi] best 12815 combination zp ZP_BYTE:5 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:50 [ init_plot_tables::$6 ]
-Uplifting [init_plot_tables] best 12815 combination zp ZP_BYTE:50 [ init_plot_tables::$6 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:21 [ line::x0#0 ]
-Uplifting [line] best 12815 combination zp ZP_BYTE:21 [ line::x0#0 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:22 [ line::x1#0 ]
-Uplifting [line] best 12815 combination zp ZP_BYTE:22 [ line::x1#0 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:24 [ line::y1#0 ]
-Uplifting [line] best 12815 combination zp ZP_BYTE:24 [ line::y1#0 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:45 [ plot::$5 ]
-Uplifting [plot] best 12815 combination zp ZP_BYTE:45 [ plot::$5 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:28 [ line_xdyi::xd#0 ]
-Uplifting [line_xdyi] best 12815 combination zp ZP_BYTE:28 [ line_xdyi::xd#0 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:29 [ line_xdyi::yd#0 ]
-Uplifting [line_xdyi] best 12815 combination zp ZP_BYTE:29 [ line_xdyi::yd#0 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:25 [ line::xd#1 ]
-Uplifting [line] best 12815 combination zp ZP_BYTE:25 [ line::xd#1 ] 
-Attempting to uplift remaining variables inzp ZP_BYTE:27 [ line_xdyi::x1#0 ]
-Uplifting [line_xdyi] best 12815 combination zp ZP_BYTE:27 [ line_xdyi::x1#0 ] 
-Coalescing zero page register [ zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ] ] with [ zp ZP_BYTE:50 [ init_plot_tables::$6 ] ]
-Coalescing zero page register [ zp ZP_BYTE:5 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 ] ] with [ zp ZP_BYTE:18 [ lines::$2 ] ]
-Coalescing zero page register [ zp ZP_BYTE:6 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 ] ] with [ zp ZP_BYTE:19 [ lines::$3 ] ]
-Coalescing zero page register [ zp ZP_BYTE:7 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ] ] with [ zp ZP_BYTE:21 [ line::x0#0 ] ]
-Coalescing zero page register [ zp ZP_PTR_BYTE:11 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 ] ] with [ zp ZP_PTR_BYTE:13 [ init_screen::b#2 init_screen::b#1 ] ]
-Coalescing zero page register [ zp ZP_PTR_BYTE:11 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 ] ] with [ zp ZP_PTR_BYTE:15 [ init_screen::c#2 init_screen::c#1 ] ]
-Coalescing zero page register [ zp ZP_PTR_BYTE:11 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 ] ] with [ zp ZP_PTR_BYTE:32 [ plot::plotter_x#1 ] ]
-Coalescing zero page register [ zp ZP_PTR_BYTE:11 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 plot::plotter_x#1 ] ] with [ zp ZP_PTR_BYTE:35 [ plot::plotter_x#2 ] ]
-Coalescing zero page register [ zp ZP_PTR_BYTE:11 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 plot::plotter_x#1 plot::plotter_x#2 ] ] with [ zp ZP_PTR_BYTE:43 [ plot::plotter#0 ] ]
-Coalescing zero page register [ zp ZP_BYTE:25 [ line::xd#1 ] ] with [ zp ZP_BYTE:28 [ line_xdyi::xd#0 ] ]
-Coalescing zero page register [ zp ZP_PTR_BYTE:38 [ plot::plotter_y#1 ] ] with [ zp ZP_PTR_BYTE:41 [ plot::plotter_y#2 ] ]
-Allocated (was zp ZP_BYTE:5) zp ZP_BYTE:3 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 lines::$2 ]
-Allocated (was zp ZP_BYTE:6) zp ZP_BYTE:4 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 lines::$3 ]
-Allocated (was zp ZP_BYTE:7) zp ZP_BYTE:5 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 line::x0#0 ]
-Allocated (was zp ZP_PTR_BYTE:11) zp ZP_PTR_BYTE:6 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 plot::plotter_x#1 plot::plotter_x#2 plot::plotter#0 ]
-Allocated (was zp ZP_BYTE:22) zp ZP_BYTE:8 [ line::x1#0 ]
-Allocated (was zp ZP_BYTE:24) zp ZP_BYTE:9 [ line::y1#0 ]
-Allocated (was zp ZP_BYTE:25) zp ZP_BYTE:10 [ line::xd#1 line_xdyi::xd#0 ]
-Allocated (was zp ZP_BYTE:27) zp ZP_BYTE:11 [ line_xdyi::x1#0 ]
-Allocated (was zp ZP_BYTE:29) zp ZP_BYTE:12 [ line_xdyi::yd#0 ]
-Allocated (was zp ZP_PTR_BYTE:38) zp ZP_PTR_BYTE:13 [ plot::plotter_y#1 plot::plotter_y#2 ]
-Allocated (was zp ZP_BYTE:45) zp ZP_BYTE:15 [ plot::$5 ]
-Removing instruction jmp b7
+Uplifting [lines] best 14982 combination zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ]
+Uplifting [line_ydxi] best 14982 combination zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:16 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
+Uplifting [line_xdyi] best 14982 combination zp ZP_BYTE:16 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:22 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ]
+Uplifting [line_ydxd] best 14982 combination zp ZP_BYTE:22 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:28 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ]
+Uplifting [line_xdyd] best 14982 combination zp ZP_BYTE:28 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:39 [ lines::$2 ]
+Uplifting [lines] best 14982 combination zp ZP_BYTE:39 [ lines::$2 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:40 [ lines::$3 ]
+Uplifting [lines] best 14982 combination zp ZP_BYTE:40 [ lines::$3 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:6 [ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ]
+Uplifting [line_ydxi] best 14982 combination zp ZP_BYTE:6 [ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:15 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ]
+Uplifting [line_xdyi] best 14982 combination zp ZP_BYTE:15 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:20 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ]
+Uplifting [line_ydxd] best 14982 combination zp ZP_BYTE:20 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:27 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ]
+Uplifting [line_xdyd] best 14982 combination zp ZP_BYTE:27 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:78 [ init_plot_tables::$10 ]
+Uplifting [init_plot_tables] best 14922 combination reg byte a [ init_plot_tables::$10 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:7 [ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ]
+Uplifting [line_ydxi] best 14922 combination zp ZP_BYTE:7 [ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:14 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ]
+Uplifting [line_xdyi] best 14922 combination zp ZP_BYTE:14 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:21 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ]
+Uplifting [line_ydxd] best 14922 combination zp ZP_BYTE:21 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:26 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ]
+Uplifting [line_xdyd] best 14922 combination zp ZP_BYTE:26 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:74 [ init_plot_tables::$6 ]
+Uplifting [init_plot_tables] best 14922 combination zp ZP_BYTE:74 [ init_plot_tables::$6 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ]
+Uplifting [line_ydxi] best 14922 combination zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:11 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ]
+Uplifting [line_xdyi] best 14922 combination zp ZP_BYTE:11 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:17 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ]
+Uplifting [line_ydxd] best 14922 combination zp ZP_BYTE:17 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:23 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ]
+Uplifting [line_xdyd] best 14922 combination zp ZP_BYTE:23 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:44 [ line::y0#0 ]
+Uplifting [line] best 14922 combination zp ZP_BYTE:44 [ line::y0#0 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ]
+Uplifting [line_ydxi] best 14922 combination zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:12 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ]
+Uplifting [line_xdyi] best 14922 combination zp ZP_BYTE:12 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:18 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ]
+Uplifting [line_ydxd] best 14922 combination zp ZP_BYTE:18 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:24 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ]
+Uplifting [line_xdyd] best 14922 combination zp ZP_BYTE:24 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:42 [ line::x0#0 ]
+Uplifting [line] best 14922 combination zp ZP_BYTE:42 [ line::x0#0 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ]
+Uplifting [line_ydxi] best 14922 combination zp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:13 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ]
+Uplifting [line_xdyi] best 14922 combination zp ZP_BYTE:13 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:19 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ]
+Uplifting [line_ydxd] best 14922 combination zp ZP_BYTE:19 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:25 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ]
+Uplifting [line_xdyd] best 14922 combination zp ZP_BYTE:25 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:67 [ plot::$5 ]
+Uplifting [plot] best 14922 combination zp ZP_BYTE:67 [ plot::$5 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:47 [ line::yd#1 ]
+Uplifting [line] best 14922 combination zp ZP_BYTE:47 [ line::yd#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:48 [ line::yd#0 ]
+Uplifting [line] best 14922 combination zp ZP_BYTE:48 [ line::yd#0 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:50 [ line::yd#3 ]
+Uplifting [line] best 14922 combination zp ZP_BYTE:50 [ line::yd#3 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:51 [ line::yd#10 ]
+Uplifting [line] best 14922 combination zp ZP_BYTE:51 [ line::yd#10 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:46 [ line::xd#1 ]
+Uplifting [line] best 14922 combination zp ZP_BYTE:46 [ line::xd#1 ] 
+Attempting to uplift remaining variables inzp ZP_BYTE:49 [ line::xd#0 ]
+Uplifting [line] best 14922 combination zp ZP_BYTE:49 [ line::xd#0 ] 
+Coalescing zero page register [ zp ZP_BYTE:2 [ lines::l#2 lines::l#1 ] ] with [ zp ZP_BYTE:74 [ init_plot_tables::$6 ] ]
+Coalescing zero page register [ zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 ] ] with [ zp ZP_BYTE:39 [ lines::$2 ] ]
+Coalescing zero page register [ zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 lines::$2 ] ] with [ zp ZP_BYTE:44 [ line::y0#0 ] ]
+Coalescing zero page register [ zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 ] ] with [ zp ZP_BYTE:40 [ lines::$3 ] ]
+Coalescing zero page register [ zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 lines::$3 ] ] with [ zp ZP_BYTE:47 [ line::yd#1 ] ]
+Coalescing zero page register [ zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 lines::$3 line::yd#1 ] ] with [ zp ZP_BYTE:48 [ line::yd#0 ] ]
+Coalescing zero page register [ zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 lines::$3 line::yd#1 line::yd#0 ] ] with [ zp ZP_BYTE:50 [ line::yd#3 ] ]
+Coalescing zero page register [ zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 lines::$3 line::yd#1 line::yd#0 line::yd#3 ] ] with [ zp ZP_BYTE:51 [ line::yd#10 ] ]
+Coalescing zero page register [ zp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 ] ] with [ zp ZP_BYTE:42 [ line::x0#0 ] ]
+Coalescing zero page register [ zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 ] ] with [ zp ZP_BYTE:46 [ line::xd#1 ] ]
+Coalescing zero page register [ zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 line::xd#1 ] ] with [ zp ZP_BYTE:49 [ line::xd#0 ] ]
+Coalescing zero page register [ zp ZP_PTR_BYTE:32 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 ] ] with [ zp ZP_PTR_BYTE:34 [ init_screen::b#2 init_screen::b#1 ] ]
+Coalescing zero page register [ zp ZP_PTR_BYTE:32 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 ] ] with [ zp ZP_PTR_BYTE:36 [ init_screen::c#2 init_screen::c#1 ] ]
+Coalescing zero page register [ zp ZP_PTR_BYTE:32 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 ] ] with [ zp ZP_PTR_BYTE:54 [ plot::plotter_x#1 ] ]
+Coalescing zero page register [ zp ZP_PTR_BYTE:32 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 plot::plotter_x#1 ] ] with [ zp ZP_PTR_BYTE:57 [ plot::plotter_x#2 ] ]
+Coalescing zero page register [ zp ZP_PTR_BYTE:32 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 plot::plotter_x#1 plot::plotter_x#2 ] ] with [ zp ZP_PTR_BYTE:65 [ plot::plotter#0 ] ]
+Coalescing zero page register [ zp ZP_PTR_BYTE:60 [ plot::plotter_y#1 ] ] with [ zp ZP_PTR_BYTE:63 [ plot::plotter_y#2 ] ]
+Allocated (was zp ZP_BYTE:11) zp ZP_BYTE:9 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ]
+Allocated (was zp ZP_BYTE:12) zp ZP_BYTE:10 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ]
+Allocated (was zp ZP_BYTE:13) zp ZP_BYTE:11 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ]
+Allocated (was zp ZP_BYTE:14) zp ZP_BYTE:12 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ]
+Allocated (was zp ZP_BYTE:15) zp ZP_BYTE:13 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ]
+Allocated (was zp ZP_BYTE:16) zp ZP_BYTE:14 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
+Allocated (was zp ZP_BYTE:17) zp ZP_BYTE:15 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ]
+Allocated (was zp ZP_BYTE:18) zp ZP_BYTE:16 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ]
+Allocated (was zp ZP_BYTE:19) zp ZP_BYTE:17 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ]
+Allocated (was zp ZP_BYTE:20) zp ZP_BYTE:18 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ]
+Allocated (was zp ZP_BYTE:21) zp ZP_BYTE:19 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ]
+Allocated (was zp ZP_BYTE:22) zp ZP_BYTE:20 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ]
+Allocated (was zp ZP_BYTE:23) zp ZP_BYTE:21 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ]
+Allocated (was zp ZP_BYTE:24) zp ZP_BYTE:22 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ]
+Allocated (was zp ZP_BYTE:25) zp ZP_BYTE:23 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ]
+Allocated (was zp ZP_BYTE:26) zp ZP_BYTE:24 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ]
+Allocated (was zp ZP_BYTE:27) zp ZP_BYTE:25 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ]
+Allocated (was zp ZP_BYTE:28) zp ZP_BYTE:26 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ]
+Allocated (was zp ZP_PTR_BYTE:32) zp ZP_PTR_BYTE:27 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 plot::plotter_x#1 plot::plotter_x#2 plot::plotter#0 ]
+Allocated (was zp ZP_PTR_BYTE:60) zp ZP_PTR_BYTE:29 [ plot::plotter_y#1 plot::plotter_y#2 ]
+Allocated (was zp ZP_BYTE:67) zp ZP_BYTE:31 [ plot::$5 ]
+Removing instruction jmp b10
 Removing instruction jmp bend
 Removing instruction jmp b3
 Removing instruction jmp b1
@@ -10914,15 +16998,29 @@ Removing instruction jmp breturn
 Removing instruction jmp b1
 Removing instruction jmp b3
 Removing instruction jmp breturn
-Removing instruction jmp b9
-Removing instruction jmp b10
-Removing instruction jmp b11
-Removing instruction jmp breturn
-Removing instruction jmp b19
-Removing instruction jmp b17
 Removing instruction jmp b15
+Removing instruction jmp b16
+Removing instruction jmp b17
+Removing instruction jmp breturn
+Removing instruction jmp b20
+Removing instruction jmp b23
 Removing instruction jmp b24
-Removing instruction jmp b22
+Removing instruction jmp b27
+Removing instruction jmp b1
+Removing instruction jmp b5
+Removing instruction jmp b3
+Removing instruction jmp b2
+Removing instruction jmp breturn
+Removing instruction jmp breturn
+Removing instruction jmp b1
+Removing instruction jmp b5
+Removing instruction jmp b3
+Removing instruction jmp b2
+Removing instruction jmp breturn
+Removing instruction jmp b1
+Removing instruction jmp b5
+Removing instruction jmp b3
+Removing instruction jmp b2
 Removing instruction jmp breturn
 Removing instruction jmp b1
 Removing instruction jmp b5
@@ -10967,8 +17065,8 @@ ASSEMBLER
   lines_y: .byte $a, $28, $3c, $50, $6e, $50, $3c, $28, $a
 //SEG1 @begin
 bbegin:
-//SEG2 @7
-b7:
+//SEG2 @10
+b10:
 //SEG3 [0] call main param-assignment [ ]
   jsr main
 //SEG4 @end
@@ -10988,13 +17086,13 @@ main: {
     lda #$18
     sta D018
   //SEG10 [5] call init_screen param-assignment [ ]
-  //SEG11 [116] phi from main to init_screen [phi:main->init_screen]
+  //SEG11 [186] phi from main to init_screen [phi:main->init_screen]
   init_screen_from_main:
     jsr init_screen
   //SEG12 main::@3
   b3:
   //SEG13 [6] call init_plot_tables param-assignment [ ]
-  //SEG14 [91] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
+  //SEG14 [161] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
   init_plot_tables_from_b3:
     jsr init_plot_tables
   //SEG15 main::@1
@@ -11046,13 +17144,13 @@ lines: {
     tax
   //SEG32 [16] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] -- zpby1=yby 
     sty line.x0
-  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- zpby1=zpby2 
-    lda _2
-    sta line.x1
-  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- yby=zpby1 
-    ldy _3
-  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1=xby 
-    stx line.y1
+  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- yby=zpby1 
+    ldy _2
+  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- zpby1=zpby2 
+    lda _3
+    sta line.y0
+  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
+    // (byte) line::y1#0 = (byte~) lines::$5  // register copy reg byte x
   //SEG36 [20] call line param-assignment [ lines::l#2 ]
     jsr line
   //SEG37 lines::@3
@@ -11071,191 +17169,383 @@ lines: {
 //SEG42 line
 line: {
     .label x0 = 5
-    .label x1 = 8
-    .label y1 = 9
-    .label xd = 10
-  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_zpby2_then_la1 
-    lda x0
-    cmp x1
-    bcs b1
-  //SEG44 line::@9
-  b9:
-  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=zpby2_minus_zpby3 
-    lda x1
+    .label y0 = 3
+    .label xd = 8
+    .label yd = 4
+  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_yby_then_la1 
+    cpy x0
+    bcc b1
+  //SEG44 line::@15
+  b15:
+  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=yby_minus_zpby2 
+    tya
     sec
     sbc x0
     sta xd
-  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b2
-  //SEG47 line::@10
-  b10:
-  //SEG48 [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby=zpby1_minus_yby 
-    sty $ff
-    lda y1
+  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b2
+  //SEG47 line::@16
+  b16:
+  //SEG48 [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1=xby_minus_zpby2 
+    txa
     sec
-    sbc $ff
-    tax
-  //SEG49 [28] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby_ge_zpby1_then_la1 
-    cpx xd
+    sbc y0
+    sta yd
+  //SEG49 [28] if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
     bcs b3
-  //SEG50 line::@11
-  b11:
-  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyi::x#0 ] -- zpby1=zpby2 
+  //SEG50 line::@17
+  b17:
+  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#1 line_xdyi::x#0 ] -- zpby1=zpby2 
     lda x0
     sta line_xdyi.x
-  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=yby 
-    sty line_xdyi.y
-  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=zpby2 
-    lda x1
-    sta line_xdyi.x1
-  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
-    // (byte) line_xdyi::xd#0 = (byte) line::xd#1  // register copy zp ZP_BYTE:10
-  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=xby 
-    stx line_xdyi.yd
+  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyi.y
+  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=yby 
+    sty line_xdyi.x1
+  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
   //SEG56 [34] call line_xdyi param-assignment [ ]
+  //SEG57 [116] phi from line::@17 to line_xdyi [phi:line::@17->line_xdyi]
+  line_xdyi_from_b17:
+  //SEG58 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#0 [phi:line::@17->line_xdyi#0] -- register_copy 
+  //SEG59 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#0 [phi:line::@17->line_xdyi#1] -- register_copy 
+  //SEG60 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#0 [phi:line::@17->line_xdyi#2] -- register_copy 
+  //SEG61 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#0 [phi:line::@17->line_xdyi#3] -- register_copy 
+  //SEG62 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#0 [phi:line::@17->line_xdyi#4] -- register_copy 
     jsr line_xdyi
-  //SEG57 line::@return
+  //SEG63 line::@return
   breturn:
-  //SEG58 [35] return  [ ]
+  //SEG64 [35] return  [ ]
     rts
-  //SEG59 line::@3
+  //SEG65 line::@3
   b3:
-  //SEG60 [36] (byte) plot::x#2 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#2 ] -- xby=zpby1 
-    ldx x0
-  //SEG61 [37] (byte) plot::y#2 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#2 plot::y#2 ]
-    // (byte) plot::y#2 = (byte) line::y0#0  // register copy reg byte y
-  //SEG62 [38] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG63 [62] phi from line::@3 to plot [phi:line::@3->plot]
-  plot_from_b3:
-  //SEG64 [62] phi (byte) plot::y#9 = (byte) plot::y#2 [phi:line::@3->plot#0] -- register_copy 
-  //SEG65 [62] phi (byte) plot::x#9 = (byte) plot::x#2 [phi:line::@3->plot#1] -- register_copy 
-    jsr plot
-  //SEG66 line::@19
-  b19:
-  //SEG67 [39] (byte) plot::x#3 ← (byte) line::x1#0 [ line::y1#0 plot::x#3 ] -- xby=zpby1 
-    ldx x1
-  //SEG68 [40] (byte) plot::y#3 ← (byte) line::y1#0 [ plot::x#3 plot::y#3 ] -- yby=zpby1 
-    ldy y1
-  //SEG69 [41] call plot param-assignment [ ]
-  //SEG70 [62] phi from line::@19 to plot [phi:line::@19->plot]
-  plot_from_b19:
-  //SEG71 [62] phi (byte) plot::y#9 = (byte) plot::y#3 [phi:line::@19->plot#0] -- register_copy 
-  //SEG72 [62] phi (byte) plot::x#9 = (byte) plot::x#3 [phi:line::@19->plot#1] -- register_copy 
-    jsr plot
+  //SEG66 [36] (byte) line_ydxi::y#0 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y
+  //SEG67 [37] (byte) line_ydxi::x#0 ← (byte) line::x0#0 [ line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxi.x
+  //SEG68 [38] (byte) line_ydxi::y1#0 ← (byte) line::y1#0 [ line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 ] -- zpby1=xby 
+    stx line_ydxi.y1
+  //SEG69 [39] (byte) line_ydxi::yd#0 ← (byte) line::yd#1 [ line::xd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 ]
+    // (byte) line_ydxi::yd#0 = (byte) line::yd#1  // register copy zp ZP_BYTE:4
+  //SEG70 [40] (byte) line_ydxi::xd#0 ← (byte) line::xd#1 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG71 [41] call line_ydxi param-assignment [ ]
+  //SEG72 [86] phi from line::@3 to line_ydxi [phi:line::@3->line_ydxi]
+  line_ydxi_from_b3:
+  //SEG73 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#0 [phi:line::@3->line_ydxi#0] -- register_copy 
+  //SEG74 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#0 [phi:line::@3->line_ydxi#1] -- register_copy 
+  //SEG75 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#0 [phi:line::@3->line_ydxi#2] -- register_copy 
+  //SEG76 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#0 [phi:line::@3->line_ydxi#3] -- register_copy 
+  //SEG77 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#0 [phi:line::@3->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
-  //SEG73 line::@2
+  //SEG78 line::@2
   b2:
-  //SEG74 [42] (byte) plot::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#0 ] -- xby=zpby1 
-    ldx x0
-  //SEG75 [43] (byte) plot::y#0 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#0 plot::y#0 ]
-    // (byte) plot::y#0 = (byte) line::y0#0  // register copy reg byte y
-  //SEG76 [44] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG77 [62] phi from line::@2 to plot [phi:line::@2->plot]
-  plot_from_b2:
-  //SEG78 [62] phi (byte) plot::y#9 = (byte) plot::y#0 [phi:line::@2->plot#0] -- register_copy 
-  //SEG79 [62] phi (byte) plot::x#9 = (byte) plot::x#0 [phi:line::@2->plot#1] -- register_copy 
-    jsr plot
-  //SEG80 line::@17
-  b17:
-  //SEG81 [45] (byte) plot::x#1 ← (byte) line::x1#0 [ line::y1#0 plot::x#1 ] -- xby=zpby1 
-    ldx x1
-  //SEG82 [46] (byte) plot::y#1 ← (byte) line::y1#0 [ plot::x#1 plot::y#1 ] -- yby=zpby1 
-    ldy y1
-  //SEG83 [47] call plot param-assignment [ ]
-  //SEG84 [62] phi from line::@17 to plot [phi:line::@17->plot]
-  plot_from_b17:
-  //SEG85 [62] phi (byte) plot::y#9 = (byte) plot::y#1 [phi:line::@17->plot#0] -- register_copy 
-  //SEG86 [62] phi (byte) plot::x#9 = (byte) plot::x#1 [phi:line::@17->plot#1] -- register_copy 
-    jsr plot
-    jmp breturn
-  //SEG87 line::@1
-  b1:
-  //SEG88 [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- aby=zpby1_minus_zpby2 
-    lda x1
+  //SEG79 [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
     sec
-    sbc x0
-  //SEG89 [49] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b7
-  //SEG90 line::@15
-  b15:
-  //SEG91 [50] (byte) plot::x#6 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#6 ] -- xby=zpby1 
-    ldx x0
-  //SEG92 [51] (byte) plot::y#6 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#6 plot::y#6 ]
-    // (byte) plot::y#6 = (byte) line::y0#0  // register copy reg byte y
-  //SEG93 [52] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG94 [62] phi from line::@15 to plot [phi:line::@15->plot]
-  plot_from_b15:
-  //SEG95 [62] phi (byte) plot::y#9 = (byte) plot::y#6 [phi:line::@15->plot#0] -- register_copy 
-  //SEG96 [62] phi (byte) plot::x#9 = (byte) plot::x#6 [phi:line::@15->plot#1] -- register_copy 
-    jsr plot
-  //SEG97 line::@24
-  b24:
-  //SEG98 [53] (byte) plot::x#7 ← (byte) line::x1#0 [ line::y1#0 plot::x#7 ] -- xby=zpby1 
-    ldx x1
-  //SEG99 [54] (byte) plot::y#7 ← (byte) line::y1#0 [ plot::x#7 plot::y#7 ] -- yby=zpby1 
-    ldy y1
-  //SEG100 [55] call plot param-assignment [ ]
-  //SEG101 [62] phi from line::@24 to plot [phi:line::@24->plot]
-  plot_from_b24:
-  //SEG102 [62] phi (byte) plot::y#9 = (byte) plot::y#7 [phi:line::@24->plot#0] -- register_copy 
-  //SEG103 [62] phi (byte) plot::x#9 = (byte) plot::x#7 [phi:line::@24->plot#1] -- register_copy 
-    jsr plot
+    sbc $ff
+    sta yd
+  //SEG80 [43] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b6
+  //SEG81 line::@20
+  b20:
+  //SEG82 [44] (byte) line_xdyd::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyd::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x
+  //SEG83 [45] (byte) line_xdyd::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyd.y
+  //SEG84 [46] (byte) line_xdyd::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 ] -- zpby1=yby 
+    sty line_xdyd.x1
+  //SEG85 [47] (byte) line_xdyd::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG86 [48] (byte) line_xdyd::yd#0 ← (byte) line::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG87 [49] call line_xdyd param-assignment [ ]
+  //SEG88 [146] phi from line::@20 to line_xdyd [phi:line::@20->line_xdyd]
+  line_xdyd_from_b20:
+  //SEG89 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#0 [phi:line::@20->line_xdyd#0] -- register_copy 
+  //SEG90 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#0 [phi:line::@20->line_xdyd#1] -- register_copy 
+  //SEG91 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#0 [phi:line::@20->line_xdyd#2] -- register_copy 
+  //SEG92 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#0 [phi:line::@20->line_xdyd#3] -- register_copy 
+  //SEG93 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#0 [phi:line::@20->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
     jmp breturn
-  //SEG104 line::@7
-  b7:
-  //SEG105 [56] (byte) plot::x#4 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#4 ] -- xby=zpby1 
-    ldx x0
-  //SEG106 [57] (byte) plot::y#4 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#4 plot::y#4 ]
-    // (byte) plot::y#4 = (byte) line::y0#0  // register copy reg byte y
-  //SEG107 [58] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG108 [62] phi from line::@7 to plot [phi:line::@7->plot]
-  plot_from_b7:
-  //SEG109 [62] phi (byte) plot::y#9 = (byte) plot::y#4 [phi:line::@7->plot#0] -- register_copy 
-  //SEG110 [62] phi (byte) plot::x#9 = (byte) plot::x#4 [phi:line::@7->plot#1] -- register_copy 
-    jsr plot
-  //SEG111 line::@22
-  b22:
-  //SEG112 [59] (byte) plot::x#5 ← (byte) line::x1#0 [ line::y1#0 plot::x#5 ] -- xby=zpby1 
-    ldx x1
-  //SEG113 [60] (byte) plot::y#5 ← (byte) line::y1#0 [ plot::x#5 plot::y#5 ] -- yby=zpby1 
-    ldy y1
-  //SEG114 [61] call plot param-assignment [ ]
-  //SEG115 [62] phi from line::@22 to plot [phi:line::@22->plot]
-  plot_from_b22:
-  //SEG116 [62] phi (byte) plot::y#9 = (byte) plot::y#5 [phi:line::@22->plot#0] -- register_copy 
-  //SEG117 [62] phi (byte) plot::x#9 = (byte) plot::x#5 [phi:line::@22->plot#1] -- register_copy 
-    jsr plot
+  //SEG94 line::@6
+  b6:
+  //SEG95 [50] (byte) line_ydxd::y#0 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 ] -- zpby1=xby 
+    stx line_ydxd.y
+  //SEG96 [51] (byte) line_ydxd::x#0 ← (byte) line::x1#0 [ line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 ] -- zpby1=yby 
+    sty line_ydxd.x
+  //SEG97 [52] (byte) line_ydxd::y1#0 ← (byte) line::y0#0 [ line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y1
+  //SEG98 [53] (byte) line_ydxd::yd#0 ← (byte) line::yd#0 [ line::xd#1 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG99 [54] (byte) line_ydxd::xd#0 ← (byte) line::xd#1 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG100 [55] call line_ydxd param-assignment [ ]
+  //SEG101 [131] phi from line::@6 to line_ydxd [phi:line::@6->line_ydxd]
+  line_ydxd_from_b6:
+  //SEG102 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#0 [phi:line::@6->line_ydxd#0] -- register_copy 
+  //SEG103 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#0 [phi:line::@6->line_ydxd#1] -- register_copy 
+  //SEG104 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#0 [phi:line::@6->line_ydxd#2] -- register_copy 
+  //SEG105 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#0 [phi:line::@6->line_ydxd#3] -- register_copy 
+  //SEG106 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#0 [phi:line::@6->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG107 line::@1
+  b1:
+  //SEG108 [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1=zpby2_minus_yby 
+    sty $ff
+    lda x0
+    sec
+    sbc $ff
+    sta xd
+  //SEG109 [57] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b9
+  //SEG110 line::@23
+  b23:
+  //SEG111 [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1=xby_minus_zpby2 
+    txa
+    sec
+    sbc y0
+    sta yd
+  //SEG112 [59] if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b10
+  //SEG113 line::@24
+  b24:
+  //SEG114 [60] (byte) line_xdyd::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_xdyd::x#1 ] -- zpby1=yby 
+    sty line_xdyd.x
+  //SEG115 [61] (byte) line_xdyd::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 ] -- zpby1=xby 
+    stx line_xdyd.y
+  //SEG116 [62] (byte) line_xdyd::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x1
+  //SEG117 [63] (byte) line_xdyd::xd#1 ← (byte) line::xd#0 [ line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG118 [64] (byte) line_xdyd::yd#1 ← (byte) line::yd#3 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG119 [65] call line_xdyd param-assignment [ ]
+  //SEG120 [146] phi from line::@24 to line_xdyd [phi:line::@24->line_xdyd]
+  line_xdyd_from_b24:
+  //SEG121 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#1 [phi:line::@24->line_xdyd#0] -- register_copy 
+  //SEG122 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#1 [phi:line::@24->line_xdyd#1] -- register_copy 
+  //SEG123 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#1 [phi:line::@24->line_xdyd#2] -- register_copy 
+  //SEG124 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#1 [phi:line::@24->line_xdyd#3] -- register_copy 
+  //SEG125 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#1 [phi:line::@24->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
+    jmp breturn
+  //SEG126 line::@10
+  b10:
+  //SEG127 [66] (byte) line_ydxd::y#1 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y
+  //SEG128 [67] (byte) line_ydxd::x#1 ← (byte) line::x0#0 [ line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxd.x
+  //SEG129 [68] (byte) line_ydxd::y1#1 ← (byte) line::y1#0 [ line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 ] -- zpby1=xby 
+    stx line_ydxd.y1
+  //SEG130 [69] (byte) line_ydxd::yd#1 ← (byte) line::yd#3 [ line::xd#0 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG131 [70] (byte) line_ydxd::xd#1 ← (byte) line::xd#0 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG132 [71] call line_ydxd param-assignment [ ]
+  //SEG133 [131] phi from line::@10 to line_ydxd [phi:line::@10->line_ydxd]
+  line_ydxd_from_b10:
+  //SEG134 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#1 [phi:line::@10->line_ydxd#0] -- register_copy 
+  //SEG135 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#1 [phi:line::@10->line_ydxd#1] -- register_copy 
+  //SEG136 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#1 [phi:line::@10->line_ydxd#2] -- register_copy 
+  //SEG137 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#1 [phi:line::@10->line_ydxd#3] -- register_copy 
+  //SEG138 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#1 [phi:line::@10->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG139 line::@9
+  b9:
+  //SEG140 [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
+    sec
+    sbc $ff
+    sta yd
+  //SEG141 [73] if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b13
+  //SEG142 line::@27
+  b27:
+  //SEG143 [74] (byte) line_xdyi::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#10 line_xdyi::x#1 ] -- zpby1=yby 
+    sty line_xdyi.x
+  //SEG144 [75] (byte) line_xdyi::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 ] -- zpby1=xby 
+    stx line_xdyi.y
+  //SEG145 [76] (byte) line_xdyi::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyi.x1
+  //SEG146 [77] (byte) line_xdyi::xd#1 ← (byte) line::xd#0 [ line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG147 [78] (byte) line_xdyi::yd#1 ← (byte) line::yd#10 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
+  //SEG148 [79] call line_xdyi param-assignment [ ]
+  //SEG149 [116] phi from line::@27 to line_xdyi [phi:line::@27->line_xdyi]
+  line_xdyi_from_b27:
+  //SEG150 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#1 [phi:line::@27->line_xdyi#0] -- register_copy 
+  //SEG151 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#1 [phi:line::@27->line_xdyi#1] -- register_copy 
+  //SEG152 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line::@27->line_xdyi#2] -- register_copy 
+  //SEG153 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#1 [phi:line::@27->line_xdyi#3] -- register_copy 
+  //SEG154 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#1 [phi:line::@27->line_xdyi#4] -- register_copy 
+    jsr line_xdyi
+    jmp breturn
+  //SEG155 line::@13
+  b13:
+  //SEG156 [80] (byte) line_ydxi::y#1 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 ] -- zpby1=xby 
+    stx line_ydxi.y
+  //SEG157 [81] (byte) line_ydxi::x#1 ← (byte) line::x1#0 [ line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 ] -- zpby1=yby 
+    sty line_ydxi.x
+  //SEG158 [82] (byte) line_ydxi::y1#1 ← (byte) line::y0#0 [ line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y1
+  //SEG159 [83] (byte) line_ydxi::yd#1 ← (byte) line::yd#10 [ line::xd#0 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 ]
+    // (byte) line_ydxi::yd#1 = (byte) line::yd#10  // register copy zp ZP_BYTE:4
+  //SEG160 [84] (byte) line_ydxi::xd#1 ← (byte) line::xd#0 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG161 [85] call line_ydxi param-assignment [ ]
+  //SEG162 [86] phi from line::@13 to line_ydxi [phi:line::@13->line_ydxi]
+  line_ydxi_from_b13:
+  //SEG163 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#1 [phi:line::@13->line_ydxi#0] -- register_copy 
+  //SEG164 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#1 [phi:line::@13->line_ydxi#1] -- register_copy 
+  //SEG165 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#1 [phi:line::@13->line_ydxi#2] -- register_copy 
+  //SEG166 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#1 [phi:line::@13->line_ydxi#3] -- register_copy 
+  //SEG167 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#1 [phi:line::@13->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
 }
-//SEG118 plot
+//SEG168 line_ydxi
+line_ydxi: {
+    .label y = 7
+    .label x = 6
+    .label y1 = 5
+    .label yd = 4
+    .label xd = 3
+    .label e = 8
+  //SEG169 [87] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG170 [88] phi from line_ydxi line_ydxi::@2 to line_ydxi::@1 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1]
+  b1_from_line_ydxi:
+  b1_from_b2:
+  //SEG171 [88] phi (byte) line_ydxi::e#3 = (byte) line_ydxi::e#0 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#0] -- register_copy 
+  //SEG172 [88] phi (byte) line_ydxi::y#3 = (byte) line_ydxi::y#6 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#1] -- register_copy 
+  //SEG173 [88] phi (byte) line_ydxi::x#3 = (byte) line_ydxi::x#5 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#2] -- register_copy 
+  //SEG174 line_ydxi::@1
+  b1:
+  //SEG175 [89] (byte) plot::x#2 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 ] -- xby=zpby1 
+    ldx x
+  //SEG176 [90] (byte) plot::y#2 ← (byte) line_ydxi::y#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 plot::y#2 ] -- yby=zpby1 
+    ldy y
+  //SEG177 [91] call plot param-assignment [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  //SEG178 [101] phi from line_ydxi::@1 to plot [phi:line_ydxi::@1->plot]
+  plot_from_b1:
+  //SEG179 [101] phi (byte) plot::y#4 = (byte) plot::y#2 [phi:line_ydxi::@1->plot#0] -- register_copy 
+  //SEG180 [101] phi (byte) plot::x#4 = (byte) plot::x#2 [phi:line_ydxi::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG181 line_ydxi::@5
+  b5:
+  //SEG182 [92] (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::e#3 line_ydxi::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG183 [93] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG184 [94] if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2_from_b5
+  //SEG185 line_ydxi::@3
+  b3:
+  //SEG186 [95] (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG187 [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG188 [97] phi from line_ydxi::@3 line_ydxi::@5 to line_ydxi::@2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2]
+  b2_from_b3:
+  b2_from_b5:
+  //SEG189 [97] phi (byte) line_ydxi::e#6 = (byte) line_ydxi::e#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#0] -- register_copy 
+  //SEG190 [97] phi (byte) line_ydxi::x#6 = (byte) line_ydxi::x#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#1] -- register_copy 
+  //SEG191 line_ydxi::@2
+  b2:
+  //SEG192 [98] (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 line_ydxi::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG193 [99] if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1_from_b2
+  //SEG194 line_ydxi::@return
+  breturn:
+  //SEG195 [100] return  [ ]
+    rts
+}
+//SEG196 plot
 plot: {
-    .label _5 = 15
-    .label plotter_x = 6
-    .label plotter_y = 13
-    .label plotter = 6
-  //SEG119 [63] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::$0 ] -- aby=cowo1_staridx_xby 
+    .label _5 = 31
+    .label plotter_x = 27
+    .label plotter_y = 29
+    .label plotter = 27
+  //SEG197 [102] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::$0 ] -- aby=cowo1_staridx_xby 
     lda plot_xhi,x
-  //SEG120 [64] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#9 plot::y#9 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG198 [103] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#4 plot::y#4 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_x+1
     lda #<0
     sta plotter_x
-  //SEG121 [65] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
+  //SEG199 [104] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
     lda plot_xlo,x
-  //SEG122 [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG200 [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_x
-  //SEG123 [67] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
+  //SEG201 [106] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
     lda plot_yhi,y
-  //SEG124 [68] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG202 [107] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_y+1
     lda #<0
     sta plotter_y
-  //SEG125 [69] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
+  //SEG203 [108] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
     lda plot_ylo,y
-  //SEG126 [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG204 [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_y
-  //SEG127 [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
+  //SEG205 [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
     lda plotter
     clc
     adc plotter_y
@@ -11263,178 +17553,320 @@ plot: {
     lda plotter+1
     adc plotter_y+1
     sta plotter+1
-  //SEG128 [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
+  //SEG206 [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
     ldy #0
     lda (plotter),y
     sta _5
-  //SEG129 [73] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
+  //SEG207 [112] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
     lda plot_bit,x
-  //SEG130 [74] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
+  //SEG208 [113] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
     ora _5
-  //SEG131 [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
+  //SEG209 [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
     ldy #0
     sta (plotter),y
-  //SEG132 plot::@return
+  //SEG210 plot::@return
   breturn:
-  //SEG133 [76] return  [ ]
+  //SEG211 [115] return  [ ]
     rts
 }
-//SEG134 line_xdyi
+//SEG212 line_xdyi
 line_xdyi: {
-    .label x = 3
-    .label y = 4
+    .label x = 12
+    .label y = 13
     .label x1 = 11
     .label xd = 10
-    .label yd = 12
-    .label e = 5
-  //SEG135 [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
+    .label yd = 9
+    .label e = 14
+  //SEG213 [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
     lda yd
     lsr
     sta e
-  //SEG136 [78] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
+  //SEG214 [118] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
   b1_from_line_xdyi:
   b1_from_b2:
-  //SEG137 [78] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
-  //SEG138 [78] phi (byte) line_xdyi::y#2 = (byte) line_xdyi::y#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
-  //SEG139 [78] phi (byte) line_xdyi::x#2 = (byte) line_xdyi::x#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
-  //SEG140 line_xdyi::@1
+  //SEG215 [118] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
+  //SEG216 [118] phi (byte) line_xdyi::y#3 = (byte) line_xdyi::y#5 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
+  //SEG217 [118] phi (byte) line_xdyi::x#3 = (byte) line_xdyi::x#6 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
+  //SEG218 line_xdyi::@1
   b1:
-  //SEG141 [79] (byte) plot::x#8 ← (byte) line_xdyi::x#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- xby=zpby1 
+  //SEG219 [119] (byte) plot::x#0 ← (byte) line_xdyi::x#3 [ plot::x#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- xby=zpby1 
     ldx x
-  //SEG142 [80] (byte) plot::y#8 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 plot::y#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- yby=zpby1 
+  //SEG220 [120] (byte) plot::y#0 ← (byte) line_xdyi::y#3 [ plot::x#0 plot::y#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- yby=zpby1 
     ldy y
-  //SEG143 [81] call plot param-assignment [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  //SEG144 [62] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
+  //SEG221 [121] call plot param-assignment [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  //SEG222 [101] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
   plot_from_b1:
-  //SEG145 [62] phi (byte) plot::y#9 = (byte) plot::y#8 [phi:line_xdyi::@1->plot#0] -- register_copy 
-  //SEG146 [62] phi (byte) plot::x#9 = (byte) plot::x#8 [phi:line_xdyi::@1->plot#1] -- register_copy 
+  //SEG223 [101] phi (byte) plot::y#4 = (byte) plot::y#0 [phi:line_xdyi::@1->plot#0] -- register_copy 
+  //SEG224 [101] phi (byte) plot::x#4 = (byte) plot::x#0 [phi:line_xdyi::@1->plot#1] -- register_copy 
     jsr plot
-  //SEG147 line_xdyi::@5
+  //SEG225 line_xdyi::@5
   b5:
-  //SEG148 [82] (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::e#3 line_xdyi::x#1 ] -- zpby1=zpby1_plus_1 
+  //SEG226 [122] (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::e#3 line_xdyi::x#2 ] -- zpby1=zpby1_plus_1 
     inc x
-  //SEG149 [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+  //SEG227 [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
     lda e
     clc
     adc yd
     sta e
-  //SEG150 [84] if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+  //SEG228 [124] if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
     lda xd
     cmp e
     bcs b2_from_b5
-  //SEG151 line_xdyi::@3
+  //SEG229 line_xdyi::@3
   b3:
-  //SEG152 [85] (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#1 ] -- zpby1=zpby1_plus_1 
+  //SEG230 [125] (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#2 ] -- zpby1=zpby1_plus_1 
     inc y
-  //SEG153 [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+  //SEG231 [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
     lda e
     sec
     sbc xd
     sta e
-  //SEG154 [87] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
+  //SEG232 [127] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
   b2_from_b3:
   b2_from_b5:
-  //SEG155 [87] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
-  //SEG156 [87] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
-  //SEG157 line_xdyi::@2
+  //SEG233 [127] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
+  //SEG234 [127] phi (byte) line_xdyi::y#6 = (byte) line_xdyi::y#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
+  //SEG235 line_xdyi::@2
   b2:
-  //SEG158 [88] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
+  //SEG236 [128] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
     lda x1
     clc
     adc #1
-  //SEG159 [89] if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
+  //SEG237 [129] if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
     cmp x
     bcs b1_from_b2
-  //SEG160 line_xdyi::@return
+  //SEG238 line_xdyi::@return
   breturn:
-  //SEG161 [90] return  [ ]
+  //SEG239 [130] return  [ ]
     rts
 }
-//SEG162 init_plot_tables
+//SEG240 line_ydxd
+line_ydxd: {
+    .label y = 19
+    .label x = 18
+    .label y1 = 17
+    .label yd = 16
+    .label xd = 15
+    .label e = 20
+  //SEG241 [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG242 [133] phi from line_ydxd line_ydxd::@2 to line_ydxd::@1 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1]
+  b1_from_line_ydxd:
+  b1_from_b2:
+  //SEG243 [133] phi (byte) line_ydxd::e#3 = (byte) line_ydxd::e#0 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#0] -- register_copy 
+  //SEG244 [133] phi (byte) line_ydxd::y#3 = (byte) line_ydxd::y#6 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#1] -- register_copy 
+  //SEG245 [133] phi (byte) line_ydxd::x#3 = (byte) line_ydxd::x#5 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#2] -- register_copy 
+  //SEG246 line_ydxd::@1
+  b1:
+  //SEG247 [134] (byte) plot::x#3 ← (byte) line_ydxd::x#3 [ plot::x#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG248 [135] (byte) plot::y#3 ← (byte) line_ydxd::y#3 [ plot::x#3 plot::y#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG249 [136] call plot param-assignment [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  //SEG250 [101] phi from line_ydxd::@1 to plot [phi:line_ydxd::@1->plot]
+  plot_from_b1:
+  //SEG251 [101] phi (byte) plot::y#4 = (byte) plot::y#3 [phi:line_ydxd::@1->plot#0] -- register_copy 
+  //SEG252 [101] phi (byte) plot::x#4 = (byte) plot::x#3 [phi:line_ydxd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG253 line_ydxd::@5
+  b5:
+  //SEG254 [137] (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::e#3 line_ydxd::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG255 [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG256 [139] if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2_from_b5
+  //SEG257 line_ydxd::@3
+  b3:
+  //SEG258 [140] (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#2 ] -- zpby1=zpby1_minus_1 
+    dec x
+  //SEG259 [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG260 [142] phi from line_ydxd::@3 line_ydxd::@5 to line_ydxd::@2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2]
+  b2_from_b3:
+  b2_from_b5:
+  //SEG261 [142] phi (byte) line_ydxd::e#6 = (byte) line_ydxd::e#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#0] -- register_copy 
+  //SEG262 [142] phi (byte) line_ydxd::x#6 = (byte) line_ydxd::x#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#1] -- register_copy 
+  //SEG263 line_ydxd::@2
+  b2:
+  //SEG264 [143] (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 line_ydxd::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG265 [144] if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1_from_b2
+  //SEG266 line_ydxd::@return
+  breturn:
+  //SEG267 [145] return  [ ]
+    rts
+}
+//SEG268 line_xdyd
+line_xdyd: {
+    .label x = 24
+    .label y = 25
+    .label x1 = 23
+    .label xd = 22
+    .label yd = 21
+    .label e = 26
+  //SEG269 [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda yd
+    lsr
+    sta e
+  //SEG270 [148] phi from line_xdyd line_xdyd::@2 to line_xdyd::@1 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1]
+  b1_from_line_xdyd:
+  b1_from_b2:
+  //SEG271 [148] phi (byte) line_xdyd::e#3 = (byte) line_xdyd::e#0 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#0] -- register_copy 
+  //SEG272 [148] phi (byte) line_xdyd::y#3 = (byte) line_xdyd::y#5 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#1] -- register_copy 
+  //SEG273 [148] phi (byte) line_xdyd::x#3 = (byte) line_xdyd::x#6 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#2] -- register_copy 
+  //SEG274 line_xdyd::@1
+  b1:
+  //SEG275 [149] (byte) plot::x#1 ← (byte) line_xdyd::x#3 [ plot::x#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG276 [150] (byte) plot::y#1 ← (byte) line_xdyd::y#3 [ plot::x#1 plot::y#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG277 [151] call plot param-assignment [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  //SEG278 [101] phi from line_xdyd::@1 to plot [phi:line_xdyd::@1->plot]
+  plot_from_b1:
+  //SEG279 [101] phi (byte) plot::y#4 = (byte) plot::y#1 [phi:line_xdyd::@1->plot#0] -- register_copy 
+  //SEG280 [101] phi (byte) plot::x#4 = (byte) plot::x#1 [phi:line_xdyd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG281 line_xdyd::@5
+  b5:
+  //SEG282 [152] (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::e#3 line_xdyd::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG283 [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc yd
+    sta e
+  //SEG284 [154] if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda xd
+    cmp e
+    bcs b2_from_b5
+  //SEG285 line_xdyd::@3
+  b3:
+  //SEG286 [155] (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#2 ] -- zpby1=zpby1_minus_1 
+    dec y
+  //SEG287 [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc xd
+    sta e
+  //SEG288 [157] phi from line_xdyd::@3 line_xdyd::@5 to line_xdyd::@2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2]
+  b2_from_b3:
+  b2_from_b5:
+  //SEG289 [157] phi (byte) line_xdyd::e#6 = (byte) line_xdyd::e#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#0] -- register_copy 
+  //SEG290 [157] phi (byte) line_xdyd::y#6 = (byte) line_xdyd::y#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#1] -- register_copy 
+  //SEG291 line_xdyd::@2
+  b2:
+  //SEG292 [158] (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 line_xdyd::$8 ] -- aby=zpby1_plus_1 
+    lda x1
+    clc
+    adc #1
+  //SEG293 [159] if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp x
+    bcs b1_from_b2
+  //SEG294 line_xdyd::@return
+  breturn:
+  //SEG295 [160] return  [ ]
+    rts
+}
+//SEG296 init_plot_tables
 init_plot_tables: {
     .label _6 = 2
-    .label yoffs = 6
-  //SEG163 [92] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
+    .label yoffs = 27
+  //SEG297 [162] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
   b1_from_init_plot_tables:
-  //SEG164 [92] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
+  //SEG298 [162] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
     ldy #$80
-  //SEG165 [92] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
+  //SEG299 [162] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
     ldx #0
     jmp b1
-  //SEG166 [92] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
+  //SEG300 [162] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
   b1_from_b2:
-  //SEG167 [92] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
-  //SEG168 [92] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
-  //SEG169 init_plot_tables::@1
+  //SEG301 [162] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
+  //SEG302 [162] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
+  //SEG303 init_plot_tables::@1
   b1:
-  //SEG170 [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
+  //SEG304 [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
     txa
     and #$f8
-  //SEG171 [94] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
+  //SEG305 [164] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
     sta plot_xlo,x
-  //SEG172 [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
+  //SEG306 [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
     lda #>BITMAP
     sta plot_xhi,x
-  //SEG173 [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
+  //SEG307 [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
     tya
     sta plot_bit,x
-  //SEG174 [97] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
+  //SEG308 [167] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
     tya
     lsr
     tay
-  //SEG175 [98] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
+  //SEG309 [168] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
     cpy #0
     bne b10
-  //SEG176 [99] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
+  //SEG310 [169] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
   b2_from_b1:
-  //SEG177 [99] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
+  //SEG311 [169] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
     ldy #$80
-  //SEG178 init_plot_tables::@2
+  //SEG312 init_plot_tables::@2
   b2:
-  //SEG179 [100] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
+  //SEG313 [170] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
     inx
-  //SEG180 [101] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
+  //SEG314 [171] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b1_from_b2
-  //SEG181 [102] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
+  //SEG315 [172] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
   b3_from_b2:
-  //SEG182 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
+  //SEG316 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
     lda #0
     sta yoffs
     lda #0
     sta yoffs+1
-  //SEG183 [102] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
+  //SEG317 [172] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
     ldx #0
     jmp b3
-  //SEG184 [102] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
+  //SEG318 [172] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
   b3_from_b4:
-  //SEG185 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
-  //SEG186 [102] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
-  //SEG187 init_plot_tables::@3
+  //SEG319 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
+  //SEG320 [172] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
+  //SEG321 init_plot_tables::@3
   b3:
-  //SEG188 [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
+  //SEG322 [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
     txa
     and #7
     sta _6
-  //SEG189 [104] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
+  //SEG323 [174] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
     lda yoffs
-  //SEG190 [105] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
+  //SEG324 [175] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
     ora _6
-  //SEG191 [106] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG325 [176] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_ylo,x
-  //SEG192 [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
+  //SEG326 [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
     lda yoffs+1
-  //SEG193 [108] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG327 [178] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_yhi,x
-  //SEG194 [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
+  //SEG328 [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
     txa
     and #7
-  //SEG195 [110] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
+  //SEG329 [180] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
     cmp #7
     bne b4_from_b3
-  //SEG196 init_plot_tables::@7
+  //SEG330 init_plot_tables::@7
   b7:
-  //SEG197 [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
+  //SEG331 [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
     lda yoffs
     clc
     adc #<$140
@@ -11442,93 +17874,93 @@ init_plot_tables: {
     lda yoffs+1
     adc #>$140
     sta yoffs+1
-  //SEG198 [112] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
+  //SEG332 [182] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
   b4_from_b3:
   b4_from_b7:
-  //SEG199 [112] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
-  //SEG200 init_plot_tables::@4
+  //SEG333 [182] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
+  //SEG334 init_plot_tables::@4
   b4:
-  //SEG201 [113] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
+  //SEG335 [183] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
     inx
-  //SEG202 [114] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
+  //SEG336 [184] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b3_from_b4
-  //SEG203 init_plot_tables::@return
+  //SEG337 init_plot_tables::@return
   breturn:
-  //SEG204 [115] return  [ ]
+  //SEG338 [185] return  [ ]
     rts
-  //SEG205 init_plot_tables::@10
+  //SEG339 init_plot_tables::@10
   b10:
-  //SEG206 [99] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
+  //SEG340 [169] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
   b2_from_b10:
-  //SEG207 [99] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
+  //SEG341 [169] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
     jmp b2
 }
-//SEG208 init_screen
+//SEG342 init_screen
 init_screen: {
-    .label b = 6
-    .label c = 6
-  //SEG209 [117] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
+    .label b = 27
+    .label c = 27
+  //SEG343 [187] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
   b1_from_init_screen:
-  //SEG210 [117] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
+  //SEG344 [187] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
     lda #<BITMAP
     sta b
     lda #>BITMAP
     sta b+1
     jmp b1
-  //SEG211 [117] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
+  //SEG345 [187] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
   b1_from_b1:
-  //SEG212 [117] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
-  //SEG213 init_screen::@1
+  //SEG346 [187] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
+  //SEG347 init_screen::@1
   b1:
-  //SEG214 [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
+  //SEG348 [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #0
     sta (b),y
-  //SEG215 [119] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG349 [189] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
     inc b
     bne !+
     inc b+1
   !:
-  //SEG216 [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG350 [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda b+1
     cmp #>BITMAP+$2000
     bne b1_from_b1
     lda b
     cmp #<BITMAP+$2000
     bne b1_from_b1
-  //SEG217 [121] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
+  //SEG351 [191] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
   b2_from_b1:
-  //SEG218 [121] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
+  //SEG352 [191] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
     lda #<SCREEN
     sta c
     lda #>SCREEN
     sta c+1
     jmp b2
-  //SEG219 [121] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
+  //SEG353 [191] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
   b2_from_b2:
-  //SEG220 [121] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
-  //SEG221 init_screen::@2
+  //SEG354 [191] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
+  //SEG355 init_screen::@2
   b2:
-  //SEG222 [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
+  //SEG356 [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #$14
     sta (c),y
-  //SEG223 [123] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG357 [193] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
     inc c
     bne !+
     inc c+1
   !:
-  //SEG224 [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG358 [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda c+1
     cmp #>SCREEN+$400
     bne b2_from_b2
     lda c
     cmp #<SCREEN+$400
     bne b2_from_b2
-  //SEG225 init_screen::@return
+  //SEG359 init_screen::@return
   breturn:
-  //SEG226 [125] return  [ ]
+  //SEG360 [195] return  [ ]
     rts
 }
 
@@ -11564,8 +17996,8 @@ ASSEMBLER
   lines_y: .byte $a, $28, $3c, $50, $6e, $50, $3c, $28, $a
 //SEG1 @begin
 bbegin:
-//SEG2 @7
-b7:
+//SEG2 @10
+b10:
 //SEG3 [0] call main param-assignment [ ]
   jsr main
 //SEG4 @end
@@ -11584,13 +18016,13 @@ main: {
     lda #$18
     sta D018
   //SEG10 [5] call init_screen param-assignment [ ]
-  //SEG11 [116] phi from main to init_screen [phi:main->init_screen]
+  //SEG11 [186] phi from main to init_screen [phi:main->init_screen]
   init_screen_from_main:
     jsr init_screen
   //SEG12 main::@3
   b3:
   //SEG13 [6] call init_plot_tables param-assignment [ ]
-  //SEG14 [91] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
+  //SEG14 [161] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
   init_plot_tables_from_b3:
     jsr init_plot_tables
   //SEG15 main::@1
@@ -11642,13 +18074,13 @@ lines: {
     tax
   //SEG32 [16] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] -- zpby1=yby 
     sty line.x0
-  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- zpby1=zpby2 
-    lda _2
-    sta line.x1
-  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- yby=zpby1 
-    ldy _3
-  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1=xby 
-    stx line.y1
+  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- yby=zpby1 
+    ldy _2
+  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- zpby1=zpby2 
+    lda _3
+    sta line.y0
+  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
+    // (byte) line::y1#0 = (byte~) lines::$5  // register copy reg byte x
   //SEG36 [20] call line param-assignment [ lines::l#2 ]
     jsr line
   //SEG37 lines::@3
@@ -11667,191 +18099,383 @@ lines: {
 //SEG42 line
 line: {
     .label x0 = 5
-    .label x1 = 8
-    .label y1 = 9
-    .label xd = 10
-  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_zpby2_then_la1 
-    lda x0
-    cmp x1
-    bcs b1
-  //SEG44 line::@9
-  b9:
-  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=zpby2_minus_zpby3 
-    lda x1
+    .label y0 = 3
+    .label xd = 8
+    .label yd = 4
+  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_yby_then_la1 
+    cpy x0
+    bcc b1
+  //SEG44 line::@15
+  b15:
+  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=yby_minus_zpby2 
+    tya
     sec
     sbc x0
     sta xd
-  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b2
-  //SEG47 line::@10
-  b10:
-  //SEG48 [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby=zpby1_minus_yby 
-    sty $ff
-    lda y1
+  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b2
+  //SEG47 line::@16
+  b16:
+  //SEG48 [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1=xby_minus_zpby2 
+    txa
     sec
-    sbc $ff
-    tax
-  //SEG49 [28] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby_ge_zpby1_then_la1 
-    cpx xd
+    sbc y0
+    sta yd
+  //SEG49 [28] if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
     bcs b3
-  //SEG50 line::@11
-  b11:
-  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyi::x#0 ] -- zpby1=zpby2 
+  //SEG50 line::@17
+  b17:
+  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#1 line_xdyi::x#0 ] -- zpby1=zpby2 
     lda x0
     sta line_xdyi.x
-  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=yby 
-    sty line_xdyi.y
-  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=zpby2 
-    lda x1
-    sta line_xdyi.x1
-  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
-    // (byte) line_xdyi::xd#0 = (byte) line::xd#1  // register copy zp ZP_BYTE:10
-  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=xby 
-    stx line_xdyi.yd
+  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyi.y
+  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=yby 
+    sty line_xdyi.x1
+  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
   //SEG56 [34] call line_xdyi param-assignment [ ]
+  //SEG57 [116] phi from line::@17 to line_xdyi [phi:line::@17->line_xdyi]
+  line_xdyi_from_b17:
+  //SEG58 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#0 [phi:line::@17->line_xdyi#0] -- register_copy 
+  //SEG59 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#0 [phi:line::@17->line_xdyi#1] -- register_copy 
+  //SEG60 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#0 [phi:line::@17->line_xdyi#2] -- register_copy 
+  //SEG61 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#0 [phi:line::@17->line_xdyi#3] -- register_copy 
+  //SEG62 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#0 [phi:line::@17->line_xdyi#4] -- register_copy 
     jsr line_xdyi
-  //SEG57 line::@return
+  //SEG63 line::@return
   breturn:
-  //SEG58 [35] return  [ ]
+  //SEG64 [35] return  [ ]
     rts
-  //SEG59 line::@3
+  //SEG65 line::@3
   b3:
-  //SEG60 [36] (byte) plot::x#2 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#2 ] -- xby=zpby1 
-    ldx x0
-  //SEG61 [37] (byte) plot::y#2 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#2 plot::y#2 ]
-    // (byte) plot::y#2 = (byte) line::y0#0  // register copy reg byte y
-  //SEG62 [38] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG63 [62] phi from line::@3 to plot [phi:line::@3->plot]
-  plot_from_b3:
-  //SEG64 [62] phi (byte) plot::y#9 = (byte) plot::y#2 [phi:line::@3->plot#0] -- register_copy 
-  //SEG65 [62] phi (byte) plot::x#9 = (byte) plot::x#2 [phi:line::@3->plot#1] -- register_copy 
-    jsr plot
-  //SEG66 line::@19
-  b19:
-  //SEG67 [39] (byte) plot::x#3 ← (byte) line::x1#0 [ line::y1#0 plot::x#3 ] -- xby=zpby1 
-    ldx x1
-  //SEG68 [40] (byte) plot::y#3 ← (byte) line::y1#0 [ plot::x#3 plot::y#3 ] -- yby=zpby1 
-    ldy y1
-  //SEG69 [41] call plot param-assignment [ ]
-  //SEG70 [62] phi from line::@19 to plot [phi:line::@19->plot]
-  plot_from_b19:
-  //SEG71 [62] phi (byte) plot::y#9 = (byte) plot::y#3 [phi:line::@19->plot#0] -- register_copy 
-  //SEG72 [62] phi (byte) plot::x#9 = (byte) plot::x#3 [phi:line::@19->plot#1] -- register_copy 
-    jsr plot
+  //SEG66 [36] (byte) line_ydxi::y#0 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y
+  //SEG67 [37] (byte) line_ydxi::x#0 ← (byte) line::x0#0 [ line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxi.x
+  //SEG68 [38] (byte) line_ydxi::y1#0 ← (byte) line::y1#0 [ line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 ] -- zpby1=xby 
+    stx line_ydxi.y1
+  //SEG69 [39] (byte) line_ydxi::yd#0 ← (byte) line::yd#1 [ line::xd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 ]
+    // (byte) line_ydxi::yd#0 = (byte) line::yd#1  // register copy zp ZP_BYTE:4
+  //SEG70 [40] (byte) line_ydxi::xd#0 ← (byte) line::xd#1 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG71 [41] call line_ydxi param-assignment [ ]
+  //SEG72 [86] phi from line::@3 to line_ydxi [phi:line::@3->line_ydxi]
+  line_ydxi_from_b3:
+  //SEG73 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#0 [phi:line::@3->line_ydxi#0] -- register_copy 
+  //SEG74 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#0 [phi:line::@3->line_ydxi#1] -- register_copy 
+  //SEG75 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#0 [phi:line::@3->line_ydxi#2] -- register_copy 
+  //SEG76 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#0 [phi:line::@3->line_ydxi#3] -- register_copy 
+  //SEG77 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#0 [phi:line::@3->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
-  //SEG73 line::@2
+  //SEG78 line::@2
   b2:
-  //SEG74 [42] (byte) plot::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#0 ] -- xby=zpby1 
-    ldx x0
-  //SEG75 [43] (byte) plot::y#0 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#0 plot::y#0 ]
-    // (byte) plot::y#0 = (byte) line::y0#0  // register copy reg byte y
-  //SEG76 [44] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG77 [62] phi from line::@2 to plot [phi:line::@2->plot]
-  plot_from_b2:
-  //SEG78 [62] phi (byte) plot::y#9 = (byte) plot::y#0 [phi:line::@2->plot#0] -- register_copy 
-  //SEG79 [62] phi (byte) plot::x#9 = (byte) plot::x#0 [phi:line::@2->plot#1] -- register_copy 
-    jsr plot
-  //SEG80 line::@17
-  b17:
-  //SEG81 [45] (byte) plot::x#1 ← (byte) line::x1#0 [ line::y1#0 plot::x#1 ] -- xby=zpby1 
-    ldx x1
-  //SEG82 [46] (byte) plot::y#1 ← (byte) line::y1#0 [ plot::x#1 plot::y#1 ] -- yby=zpby1 
-    ldy y1
-  //SEG83 [47] call plot param-assignment [ ]
-  //SEG84 [62] phi from line::@17 to plot [phi:line::@17->plot]
-  plot_from_b17:
-  //SEG85 [62] phi (byte) plot::y#9 = (byte) plot::y#1 [phi:line::@17->plot#0] -- register_copy 
-  //SEG86 [62] phi (byte) plot::x#9 = (byte) plot::x#1 [phi:line::@17->plot#1] -- register_copy 
-    jsr plot
-    jmp breturn
-  //SEG87 line::@1
-  b1:
-  //SEG88 [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- aby=zpby1_minus_zpby2 
-    lda x1
+  //SEG79 [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
     sec
-    sbc x0
-  //SEG89 [49] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b7
-  //SEG90 line::@15
-  b15:
-  //SEG91 [50] (byte) plot::x#6 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#6 ] -- xby=zpby1 
-    ldx x0
-  //SEG92 [51] (byte) plot::y#6 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#6 plot::y#6 ]
-    // (byte) plot::y#6 = (byte) line::y0#0  // register copy reg byte y
-  //SEG93 [52] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG94 [62] phi from line::@15 to plot [phi:line::@15->plot]
-  plot_from_b15:
-  //SEG95 [62] phi (byte) plot::y#9 = (byte) plot::y#6 [phi:line::@15->plot#0] -- register_copy 
-  //SEG96 [62] phi (byte) plot::x#9 = (byte) plot::x#6 [phi:line::@15->plot#1] -- register_copy 
-    jsr plot
-  //SEG97 line::@24
-  b24:
-  //SEG98 [53] (byte) plot::x#7 ← (byte) line::x1#0 [ line::y1#0 plot::x#7 ] -- xby=zpby1 
-    ldx x1
-  //SEG99 [54] (byte) plot::y#7 ← (byte) line::y1#0 [ plot::x#7 plot::y#7 ] -- yby=zpby1 
-    ldy y1
-  //SEG100 [55] call plot param-assignment [ ]
-  //SEG101 [62] phi from line::@24 to plot [phi:line::@24->plot]
-  plot_from_b24:
-  //SEG102 [62] phi (byte) plot::y#9 = (byte) plot::y#7 [phi:line::@24->plot#0] -- register_copy 
-  //SEG103 [62] phi (byte) plot::x#9 = (byte) plot::x#7 [phi:line::@24->plot#1] -- register_copy 
-    jsr plot
+    sbc $ff
+    sta yd
+  //SEG80 [43] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b6
+  //SEG81 line::@20
+  b20:
+  //SEG82 [44] (byte) line_xdyd::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyd::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x
+  //SEG83 [45] (byte) line_xdyd::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyd.y
+  //SEG84 [46] (byte) line_xdyd::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 ] -- zpby1=yby 
+    sty line_xdyd.x1
+  //SEG85 [47] (byte) line_xdyd::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG86 [48] (byte) line_xdyd::yd#0 ← (byte) line::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG87 [49] call line_xdyd param-assignment [ ]
+  //SEG88 [146] phi from line::@20 to line_xdyd [phi:line::@20->line_xdyd]
+  line_xdyd_from_b20:
+  //SEG89 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#0 [phi:line::@20->line_xdyd#0] -- register_copy 
+  //SEG90 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#0 [phi:line::@20->line_xdyd#1] -- register_copy 
+  //SEG91 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#0 [phi:line::@20->line_xdyd#2] -- register_copy 
+  //SEG92 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#0 [phi:line::@20->line_xdyd#3] -- register_copy 
+  //SEG93 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#0 [phi:line::@20->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
     jmp breturn
-  //SEG104 line::@7
-  b7:
-  //SEG105 [56] (byte) plot::x#4 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#4 ] -- xby=zpby1 
-    ldx x0
-  //SEG106 [57] (byte) plot::y#4 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#4 plot::y#4 ]
-    // (byte) plot::y#4 = (byte) line::y0#0  // register copy reg byte y
-  //SEG107 [58] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG108 [62] phi from line::@7 to plot [phi:line::@7->plot]
-  plot_from_b7:
-  //SEG109 [62] phi (byte) plot::y#9 = (byte) plot::y#4 [phi:line::@7->plot#0] -- register_copy 
-  //SEG110 [62] phi (byte) plot::x#9 = (byte) plot::x#4 [phi:line::@7->plot#1] -- register_copy 
-    jsr plot
-  //SEG111 line::@22
-  b22:
-  //SEG112 [59] (byte) plot::x#5 ← (byte) line::x1#0 [ line::y1#0 plot::x#5 ] -- xby=zpby1 
-    ldx x1
-  //SEG113 [60] (byte) plot::y#5 ← (byte) line::y1#0 [ plot::x#5 plot::y#5 ] -- yby=zpby1 
-    ldy y1
-  //SEG114 [61] call plot param-assignment [ ]
-  //SEG115 [62] phi from line::@22 to plot [phi:line::@22->plot]
-  plot_from_b22:
-  //SEG116 [62] phi (byte) plot::y#9 = (byte) plot::y#5 [phi:line::@22->plot#0] -- register_copy 
-  //SEG117 [62] phi (byte) plot::x#9 = (byte) plot::x#5 [phi:line::@22->plot#1] -- register_copy 
-    jsr plot
+  //SEG94 line::@6
+  b6:
+  //SEG95 [50] (byte) line_ydxd::y#0 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 ] -- zpby1=xby 
+    stx line_ydxd.y
+  //SEG96 [51] (byte) line_ydxd::x#0 ← (byte) line::x1#0 [ line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 ] -- zpby1=yby 
+    sty line_ydxd.x
+  //SEG97 [52] (byte) line_ydxd::y1#0 ← (byte) line::y0#0 [ line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y1
+  //SEG98 [53] (byte) line_ydxd::yd#0 ← (byte) line::yd#0 [ line::xd#1 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG99 [54] (byte) line_ydxd::xd#0 ← (byte) line::xd#1 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG100 [55] call line_ydxd param-assignment [ ]
+  //SEG101 [131] phi from line::@6 to line_ydxd [phi:line::@6->line_ydxd]
+  line_ydxd_from_b6:
+  //SEG102 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#0 [phi:line::@6->line_ydxd#0] -- register_copy 
+  //SEG103 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#0 [phi:line::@6->line_ydxd#1] -- register_copy 
+  //SEG104 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#0 [phi:line::@6->line_ydxd#2] -- register_copy 
+  //SEG105 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#0 [phi:line::@6->line_ydxd#3] -- register_copy 
+  //SEG106 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#0 [phi:line::@6->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG107 line::@1
+  b1:
+  //SEG108 [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1=zpby2_minus_yby 
+    sty $ff
+    lda x0
+    sec
+    sbc $ff
+    sta xd
+  //SEG109 [57] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b9
+  //SEG110 line::@23
+  b23:
+  //SEG111 [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1=xby_minus_zpby2 
+    txa
+    sec
+    sbc y0
+    sta yd
+  //SEG112 [59] if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b10
+  //SEG113 line::@24
+  b24:
+  //SEG114 [60] (byte) line_xdyd::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_xdyd::x#1 ] -- zpby1=yby 
+    sty line_xdyd.x
+  //SEG115 [61] (byte) line_xdyd::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 ] -- zpby1=xby 
+    stx line_xdyd.y
+  //SEG116 [62] (byte) line_xdyd::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x1
+  //SEG117 [63] (byte) line_xdyd::xd#1 ← (byte) line::xd#0 [ line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG118 [64] (byte) line_xdyd::yd#1 ← (byte) line::yd#3 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG119 [65] call line_xdyd param-assignment [ ]
+  //SEG120 [146] phi from line::@24 to line_xdyd [phi:line::@24->line_xdyd]
+  line_xdyd_from_b24:
+  //SEG121 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#1 [phi:line::@24->line_xdyd#0] -- register_copy 
+  //SEG122 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#1 [phi:line::@24->line_xdyd#1] -- register_copy 
+  //SEG123 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#1 [phi:line::@24->line_xdyd#2] -- register_copy 
+  //SEG124 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#1 [phi:line::@24->line_xdyd#3] -- register_copy 
+  //SEG125 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#1 [phi:line::@24->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
+    jmp breturn
+  //SEG126 line::@10
+  b10:
+  //SEG127 [66] (byte) line_ydxd::y#1 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y
+  //SEG128 [67] (byte) line_ydxd::x#1 ← (byte) line::x0#0 [ line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxd.x
+  //SEG129 [68] (byte) line_ydxd::y1#1 ← (byte) line::y1#0 [ line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 ] -- zpby1=xby 
+    stx line_ydxd.y1
+  //SEG130 [69] (byte) line_ydxd::yd#1 ← (byte) line::yd#3 [ line::xd#0 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG131 [70] (byte) line_ydxd::xd#1 ← (byte) line::xd#0 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG132 [71] call line_ydxd param-assignment [ ]
+  //SEG133 [131] phi from line::@10 to line_ydxd [phi:line::@10->line_ydxd]
+  line_ydxd_from_b10:
+  //SEG134 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#1 [phi:line::@10->line_ydxd#0] -- register_copy 
+  //SEG135 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#1 [phi:line::@10->line_ydxd#1] -- register_copy 
+  //SEG136 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#1 [phi:line::@10->line_ydxd#2] -- register_copy 
+  //SEG137 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#1 [phi:line::@10->line_ydxd#3] -- register_copy 
+  //SEG138 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#1 [phi:line::@10->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG139 line::@9
+  b9:
+  //SEG140 [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
+    sec
+    sbc $ff
+    sta yd
+  //SEG141 [73] if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b13
+  //SEG142 line::@27
+  b27:
+  //SEG143 [74] (byte) line_xdyi::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#10 line_xdyi::x#1 ] -- zpby1=yby 
+    sty line_xdyi.x
+  //SEG144 [75] (byte) line_xdyi::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 ] -- zpby1=xby 
+    stx line_xdyi.y
+  //SEG145 [76] (byte) line_xdyi::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyi.x1
+  //SEG146 [77] (byte) line_xdyi::xd#1 ← (byte) line::xd#0 [ line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG147 [78] (byte) line_xdyi::yd#1 ← (byte) line::yd#10 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
+  //SEG148 [79] call line_xdyi param-assignment [ ]
+  //SEG149 [116] phi from line::@27 to line_xdyi [phi:line::@27->line_xdyi]
+  line_xdyi_from_b27:
+  //SEG150 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#1 [phi:line::@27->line_xdyi#0] -- register_copy 
+  //SEG151 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#1 [phi:line::@27->line_xdyi#1] -- register_copy 
+  //SEG152 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line::@27->line_xdyi#2] -- register_copy 
+  //SEG153 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#1 [phi:line::@27->line_xdyi#3] -- register_copy 
+  //SEG154 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#1 [phi:line::@27->line_xdyi#4] -- register_copy 
+    jsr line_xdyi
+    jmp breturn
+  //SEG155 line::@13
+  b13:
+  //SEG156 [80] (byte) line_ydxi::y#1 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 ] -- zpby1=xby 
+    stx line_ydxi.y
+  //SEG157 [81] (byte) line_ydxi::x#1 ← (byte) line::x1#0 [ line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 ] -- zpby1=yby 
+    sty line_ydxi.x
+  //SEG158 [82] (byte) line_ydxi::y1#1 ← (byte) line::y0#0 [ line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y1
+  //SEG159 [83] (byte) line_ydxi::yd#1 ← (byte) line::yd#10 [ line::xd#0 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 ]
+    // (byte) line_ydxi::yd#1 = (byte) line::yd#10  // register copy zp ZP_BYTE:4
+  //SEG160 [84] (byte) line_ydxi::xd#1 ← (byte) line::xd#0 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG161 [85] call line_ydxi param-assignment [ ]
+  //SEG162 [86] phi from line::@13 to line_ydxi [phi:line::@13->line_ydxi]
+  line_ydxi_from_b13:
+  //SEG163 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#1 [phi:line::@13->line_ydxi#0] -- register_copy 
+  //SEG164 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#1 [phi:line::@13->line_ydxi#1] -- register_copy 
+  //SEG165 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#1 [phi:line::@13->line_ydxi#2] -- register_copy 
+  //SEG166 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#1 [phi:line::@13->line_ydxi#3] -- register_copy 
+  //SEG167 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#1 [phi:line::@13->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
 }
-//SEG118 plot
+//SEG168 line_ydxi
+line_ydxi: {
+    .label y = 7
+    .label x = 6
+    .label y1 = 5
+    .label yd = 4
+    .label xd = 3
+    .label e = 8
+  //SEG169 [87] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG170 [88] phi from line_ydxi line_ydxi::@2 to line_ydxi::@1 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1]
+  b1_from_line_ydxi:
+  b1_from_b2:
+  //SEG171 [88] phi (byte) line_ydxi::e#3 = (byte) line_ydxi::e#0 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#0] -- register_copy 
+  //SEG172 [88] phi (byte) line_ydxi::y#3 = (byte) line_ydxi::y#6 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#1] -- register_copy 
+  //SEG173 [88] phi (byte) line_ydxi::x#3 = (byte) line_ydxi::x#5 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#2] -- register_copy 
+  //SEG174 line_ydxi::@1
+  b1:
+  //SEG175 [89] (byte) plot::x#2 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 ] -- xby=zpby1 
+    ldx x
+  //SEG176 [90] (byte) plot::y#2 ← (byte) line_ydxi::y#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 plot::y#2 ] -- yby=zpby1 
+    ldy y
+  //SEG177 [91] call plot param-assignment [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  //SEG178 [101] phi from line_ydxi::@1 to plot [phi:line_ydxi::@1->plot]
+  plot_from_b1:
+  //SEG179 [101] phi (byte) plot::y#4 = (byte) plot::y#2 [phi:line_ydxi::@1->plot#0] -- register_copy 
+  //SEG180 [101] phi (byte) plot::x#4 = (byte) plot::x#2 [phi:line_ydxi::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG181 line_ydxi::@5
+  b5:
+  //SEG182 [92] (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::e#3 line_ydxi::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG183 [93] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG184 [94] if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2_from_b5
+  //SEG185 line_ydxi::@3
+  b3:
+  //SEG186 [95] (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG187 [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG188 [97] phi from line_ydxi::@3 line_ydxi::@5 to line_ydxi::@2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2]
+  b2_from_b3:
+  b2_from_b5:
+  //SEG189 [97] phi (byte) line_ydxi::e#6 = (byte) line_ydxi::e#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#0] -- register_copy 
+  //SEG190 [97] phi (byte) line_ydxi::x#6 = (byte) line_ydxi::x#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#1] -- register_copy 
+  //SEG191 line_ydxi::@2
+  b2:
+  //SEG192 [98] (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 line_ydxi::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG193 [99] if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1_from_b2
+  //SEG194 line_ydxi::@return
+  breturn:
+  //SEG195 [100] return  [ ]
+    rts
+}
+//SEG196 plot
 plot: {
-    .label _5 = 15
-    .label plotter_x = 6
-    .label plotter_y = 13
-    .label plotter = 6
-  //SEG119 [63] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::$0 ] -- aby=cowo1_staridx_xby 
+    .label _5 = 31
+    .label plotter_x = 27
+    .label plotter_y = 29
+    .label plotter = 27
+  //SEG197 [102] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::$0 ] -- aby=cowo1_staridx_xby 
     lda plot_xhi,x
-  //SEG120 [64] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#9 plot::y#9 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG198 [103] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#4 plot::y#4 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_x+1
     lda #<0
     sta plotter_x
-  //SEG121 [65] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
+  //SEG199 [104] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
     lda plot_xlo,x
-  //SEG122 [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG200 [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_x
-  //SEG123 [67] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
+  //SEG201 [106] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
     lda plot_yhi,y
-  //SEG124 [68] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG202 [107] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_y+1
     lda #<0
     sta plotter_y
-  //SEG125 [69] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
+  //SEG203 [108] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
     lda plot_ylo,y
-  //SEG126 [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG204 [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_y
-  //SEG127 [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
+  //SEG205 [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
     lda plotter
     clc
     adc plotter_y
@@ -11859,176 +18483,318 @@ plot: {
     lda plotter+1
     adc plotter_y+1
     sta plotter+1
-  //SEG128 [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
+  //SEG206 [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
     ldy #0
     lda (plotter),y
     sta _5
-  //SEG129 [73] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
+  //SEG207 [112] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
     lda plot_bit,x
-  //SEG130 [74] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
+  //SEG208 [113] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
     ora _5
-  //SEG131 [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
+  //SEG209 [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
     sta (plotter),y
-  //SEG132 plot::@return
+  //SEG210 plot::@return
   breturn:
-  //SEG133 [76] return  [ ]
+  //SEG211 [115] return  [ ]
     rts
 }
-//SEG134 line_xdyi
+//SEG212 line_xdyi
 line_xdyi: {
-    .label x = 3
-    .label y = 4
+    .label x = 12
+    .label y = 13
     .label x1 = 11
     .label xd = 10
-    .label yd = 12
-    .label e = 5
-  //SEG135 [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
+    .label yd = 9
+    .label e = 14
+  //SEG213 [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
     lda yd
     lsr
     sta e
-  //SEG136 [78] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
+  //SEG214 [118] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
   b1_from_line_xdyi:
   b1_from_b2:
-  //SEG137 [78] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
-  //SEG138 [78] phi (byte) line_xdyi::y#2 = (byte) line_xdyi::y#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
-  //SEG139 [78] phi (byte) line_xdyi::x#2 = (byte) line_xdyi::x#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
-  //SEG140 line_xdyi::@1
+  //SEG215 [118] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
+  //SEG216 [118] phi (byte) line_xdyi::y#3 = (byte) line_xdyi::y#5 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
+  //SEG217 [118] phi (byte) line_xdyi::x#3 = (byte) line_xdyi::x#6 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
+  //SEG218 line_xdyi::@1
   b1:
-  //SEG141 [79] (byte) plot::x#8 ← (byte) line_xdyi::x#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- xby=zpby1 
+  //SEG219 [119] (byte) plot::x#0 ← (byte) line_xdyi::x#3 [ plot::x#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- xby=zpby1 
     ldx x
-  //SEG142 [80] (byte) plot::y#8 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 plot::y#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- yby=zpby1 
+  //SEG220 [120] (byte) plot::y#0 ← (byte) line_xdyi::y#3 [ plot::x#0 plot::y#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- yby=zpby1 
     ldy y
-  //SEG143 [81] call plot param-assignment [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  //SEG144 [62] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
+  //SEG221 [121] call plot param-assignment [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  //SEG222 [101] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
   plot_from_b1:
-  //SEG145 [62] phi (byte) plot::y#9 = (byte) plot::y#8 [phi:line_xdyi::@1->plot#0] -- register_copy 
-  //SEG146 [62] phi (byte) plot::x#9 = (byte) plot::x#8 [phi:line_xdyi::@1->plot#1] -- register_copy 
+  //SEG223 [101] phi (byte) plot::y#4 = (byte) plot::y#0 [phi:line_xdyi::@1->plot#0] -- register_copy 
+  //SEG224 [101] phi (byte) plot::x#4 = (byte) plot::x#0 [phi:line_xdyi::@1->plot#1] -- register_copy 
     jsr plot
-  //SEG147 line_xdyi::@5
+  //SEG225 line_xdyi::@5
   b5:
-  //SEG148 [82] (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::e#3 line_xdyi::x#1 ] -- zpby1=zpby1_plus_1 
+  //SEG226 [122] (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::e#3 line_xdyi::x#2 ] -- zpby1=zpby1_plus_1 
     inc x
-  //SEG149 [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+  //SEG227 [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
     lda e
     clc
     adc yd
     sta e
-  //SEG150 [84] if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+  //SEG228 [124] if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
     lda xd
     cmp e
     bcs b2_from_b5
-  //SEG151 line_xdyi::@3
+  //SEG229 line_xdyi::@3
   b3:
-  //SEG152 [85] (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#1 ] -- zpby1=zpby1_plus_1 
+  //SEG230 [125] (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#2 ] -- zpby1=zpby1_plus_1 
     inc y
-  //SEG153 [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+  //SEG231 [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
     lda e
     sec
     sbc xd
     sta e
-  //SEG154 [87] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
+  //SEG232 [127] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
   b2_from_b3:
   b2_from_b5:
-  //SEG155 [87] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
-  //SEG156 [87] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
-  //SEG157 line_xdyi::@2
+  //SEG233 [127] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
+  //SEG234 [127] phi (byte) line_xdyi::y#6 = (byte) line_xdyi::y#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
+  //SEG235 line_xdyi::@2
   b2:
-  //SEG158 [88] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
+  //SEG236 [128] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
     lda x1
     clc
     adc #1
-  //SEG159 [89] if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
+  //SEG237 [129] if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
     cmp x
     bcs b1_from_b2
-  //SEG160 line_xdyi::@return
+  //SEG238 line_xdyi::@return
   breturn:
-  //SEG161 [90] return  [ ]
+  //SEG239 [130] return  [ ]
     rts
 }
-//SEG162 init_plot_tables
+//SEG240 line_ydxd
+line_ydxd: {
+    .label y = 19
+    .label x = 18
+    .label y1 = 17
+    .label yd = 16
+    .label xd = 15
+    .label e = 20
+  //SEG241 [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG242 [133] phi from line_ydxd line_ydxd::@2 to line_ydxd::@1 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1]
+  b1_from_line_ydxd:
+  b1_from_b2:
+  //SEG243 [133] phi (byte) line_ydxd::e#3 = (byte) line_ydxd::e#0 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#0] -- register_copy 
+  //SEG244 [133] phi (byte) line_ydxd::y#3 = (byte) line_ydxd::y#6 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#1] -- register_copy 
+  //SEG245 [133] phi (byte) line_ydxd::x#3 = (byte) line_ydxd::x#5 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#2] -- register_copy 
+  //SEG246 line_ydxd::@1
+  b1:
+  //SEG247 [134] (byte) plot::x#3 ← (byte) line_ydxd::x#3 [ plot::x#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG248 [135] (byte) plot::y#3 ← (byte) line_ydxd::y#3 [ plot::x#3 plot::y#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG249 [136] call plot param-assignment [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  //SEG250 [101] phi from line_ydxd::@1 to plot [phi:line_ydxd::@1->plot]
+  plot_from_b1:
+  //SEG251 [101] phi (byte) plot::y#4 = (byte) plot::y#3 [phi:line_ydxd::@1->plot#0] -- register_copy 
+  //SEG252 [101] phi (byte) plot::x#4 = (byte) plot::x#3 [phi:line_ydxd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG253 line_ydxd::@5
+  b5:
+  //SEG254 [137] (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::e#3 line_ydxd::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG255 [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG256 [139] if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2_from_b5
+  //SEG257 line_ydxd::@3
+  b3:
+  //SEG258 [140] (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#2 ] -- zpby1=zpby1_minus_1 
+    dec x
+  //SEG259 [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG260 [142] phi from line_ydxd::@3 line_ydxd::@5 to line_ydxd::@2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2]
+  b2_from_b3:
+  b2_from_b5:
+  //SEG261 [142] phi (byte) line_ydxd::e#6 = (byte) line_ydxd::e#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#0] -- register_copy 
+  //SEG262 [142] phi (byte) line_ydxd::x#6 = (byte) line_ydxd::x#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#1] -- register_copy 
+  //SEG263 line_ydxd::@2
+  b2:
+  //SEG264 [143] (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 line_ydxd::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG265 [144] if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1_from_b2
+  //SEG266 line_ydxd::@return
+  breturn:
+  //SEG267 [145] return  [ ]
+    rts
+}
+//SEG268 line_xdyd
+line_xdyd: {
+    .label x = 24
+    .label y = 25
+    .label x1 = 23
+    .label xd = 22
+    .label yd = 21
+    .label e = 26
+  //SEG269 [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda yd
+    lsr
+    sta e
+  //SEG270 [148] phi from line_xdyd line_xdyd::@2 to line_xdyd::@1 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1]
+  b1_from_line_xdyd:
+  b1_from_b2:
+  //SEG271 [148] phi (byte) line_xdyd::e#3 = (byte) line_xdyd::e#0 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#0] -- register_copy 
+  //SEG272 [148] phi (byte) line_xdyd::y#3 = (byte) line_xdyd::y#5 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#1] -- register_copy 
+  //SEG273 [148] phi (byte) line_xdyd::x#3 = (byte) line_xdyd::x#6 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#2] -- register_copy 
+  //SEG274 line_xdyd::@1
+  b1:
+  //SEG275 [149] (byte) plot::x#1 ← (byte) line_xdyd::x#3 [ plot::x#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG276 [150] (byte) plot::y#1 ← (byte) line_xdyd::y#3 [ plot::x#1 plot::y#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG277 [151] call plot param-assignment [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  //SEG278 [101] phi from line_xdyd::@1 to plot [phi:line_xdyd::@1->plot]
+  plot_from_b1:
+  //SEG279 [101] phi (byte) plot::y#4 = (byte) plot::y#1 [phi:line_xdyd::@1->plot#0] -- register_copy 
+  //SEG280 [101] phi (byte) plot::x#4 = (byte) plot::x#1 [phi:line_xdyd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG281 line_xdyd::@5
+  b5:
+  //SEG282 [152] (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::e#3 line_xdyd::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG283 [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc yd
+    sta e
+  //SEG284 [154] if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda xd
+    cmp e
+    bcs b2_from_b5
+  //SEG285 line_xdyd::@3
+  b3:
+  //SEG286 [155] (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#2 ] -- zpby1=zpby1_minus_1 
+    dec y
+  //SEG287 [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc xd
+    sta e
+  //SEG288 [157] phi from line_xdyd::@3 line_xdyd::@5 to line_xdyd::@2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2]
+  b2_from_b3:
+  b2_from_b5:
+  //SEG289 [157] phi (byte) line_xdyd::e#6 = (byte) line_xdyd::e#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#0] -- register_copy 
+  //SEG290 [157] phi (byte) line_xdyd::y#6 = (byte) line_xdyd::y#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#1] -- register_copy 
+  //SEG291 line_xdyd::@2
+  b2:
+  //SEG292 [158] (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 line_xdyd::$8 ] -- aby=zpby1_plus_1 
+    lda x1
+    clc
+    adc #1
+  //SEG293 [159] if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp x
+    bcs b1_from_b2
+  //SEG294 line_xdyd::@return
+  breturn:
+  //SEG295 [160] return  [ ]
+    rts
+}
+//SEG296 init_plot_tables
 init_plot_tables: {
     .label _6 = 2
-    .label yoffs = 6
-  //SEG163 [92] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
+    .label yoffs = 27
+  //SEG297 [162] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
   b1_from_init_plot_tables:
-  //SEG164 [92] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
+  //SEG298 [162] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
     ldy #$80
-  //SEG165 [92] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
+  //SEG299 [162] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
     ldx #0
     jmp b1
-  //SEG166 [92] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
+  //SEG300 [162] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
   b1_from_b2:
-  //SEG167 [92] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
-  //SEG168 [92] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
-  //SEG169 init_plot_tables::@1
+  //SEG301 [162] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
+  //SEG302 [162] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
+  //SEG303 init_plot_tables::@1
   b1:
-  //SEG170 [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
+  //SEG304 [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
     txa
     and #$f8
-  //SEG171 [94] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
+  //SEG305 [164] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
     sta plot_xlo,x
-  //SEG172 [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
+  //SEG306 [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
     lda #>BITMAP
     sta plot_xhi,x
-  //SEG173 [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
+  //SEG307 [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
     tya
     sta plot_bit,x
-  //SEG174 [97] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
+  //SEG308 [167] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
     tya
     lsr
     tay
-  //SEG175 [98] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
+  //SEG309 [168] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
     cpy #0
     bne b10
-  //SEG176 [99] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
+  //SEG310 [169] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
   b2_from_b1:
-  //SEG177 [99] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
+  //SEG311 [169] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
     ldy #$80
-  //SEG178 init_plot_tables::@2
+  //SEG312 init_plot_tables::@2
   b2:
-  //SEG179 [100] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
+  //SEG313 [170] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
     inx
-  //SEG180 [101] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
+  //SEG314 [171] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b1_from_b2
-  //SEG181 [102] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
+  //SEG315 [172] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
   b3_from_b2:
-  //SEG182 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
+  //SEG316 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
     lda #0
     sta yoffs
     sta yoffs+1
-  //SEG183 [102] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
+  //SEG317 [172] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
     ldx #0
     jmp b3
-  //SEG184 [102] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
+  //SEG318 [172] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
   b3_from_b4:
-  //SEG185 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
-  //SEG186 [102] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
-  //SEG187 init_plot_tables::@3
+  //SEG319 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
+  //SEG320 [172] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
+  //SEG321 init_plot_tables::@3
   b3:
-  //SEG188 [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
+  //SEG322 [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
     txa
     and #7
     sta _6
-  //SEG189 [104] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
+  //SEG323 [174] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
     lda yoffs
-  //SEG190 [105] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
+  //SEG324 [175] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
     ora _6
-  //SEG191 [106] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG325 [176] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_ylo,x
-  //SEG192 [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
+  //SEG326 [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
     lda yoffs+1
-  //SEG193 [108] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG327 [178] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_yhi,x
-  //SEG194 [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
+  //SEG328 [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
     txa
     and #7
-  //SEG195 [110] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
+  //SEG329 [180] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
     cmp #7
     bne b4_from_b3
-  //SEG196 init_plot_tables::@7
+  //SEG330 init_plot_tables::@7
   b7:
-  //SEG197 [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
+  //SEG331 [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
     lda yoffs
     clc
     adc #<$140
@@ -12036,99 +18802,105 @@ init_plot_tables: {
     lda yoffs+1
     adc #>$140
     sta yoffs+1
-  //SEG198 [112] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
+  //SEG332 [182] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
   b4_from_b3:
   b4_from_b7:
-  //SEG199 [112] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
-  //SEG200 init_plot_tables::@4
+  //SEG333 [182] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
+  //SEG334 init_plot_tables::@4
   b4:
-  //SEG201 [113] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
+  //SEG335 [183] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
     inx
-  //SEG202 [114] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
+  //SEG336 [184] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b3_from_b4
-  //SEG203 init_plot_tables::@return
+  //SEG337 init_plot_tables::@return
   breturn:
-  //SEG204 [115] return  [ ]
+  //SEG338 [185] return  [ ]
     rts
-  //SEG205 init_plot_tables::@10
+  //SEG339 init_plot_tables::@10
   b10:
-  //SEG206 [99] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
+  //SEG340 [169] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
   b2_from_b10:
-  //SEG207 [99] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
+  //SEG341 [169] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
     jmp b2
 }
-//SEG208 init_screen
+//SEG342 init_screen
 init_screen: {
-    .label b = 6
-    .label c = 6
-  //SEG209 [117] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
+    .label b = 27
+    .label c = 27
+  //SEG343 [187] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
   b1_from_init_screen:
-  //SEG210 [117] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
+  //SEG344 [187] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
     lda #<BITMAP
     sta b
     lda #>BITMAP
     sta b+1
     jmp b1
-  //SEG211 [117] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
+  //SEG345 [187] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
   b1_from_b1:
-  //SEG212 [117] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
-  //SEG213 init_screen::@1
+  //SEG346 [187] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
+  //SEG347 init_screen::@1
   b1:
-  //SEG214 [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
+  //SEG348 [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #0
     sta (b),y
-  //SEG215 [119] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG349 [189] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
     inc b
     bne !+
     inc b+1
   !:
-  //SEG216 [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG350 [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda b+1
     cmp #>BITMAP+$2000
     bne b1_from_b1
     lda b
     cmp #<BITMAP+$2000
     bne b1_from_b1
-  //SEG217 [121] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
+  //SEG351 [191] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
   b2_from_b1:
-  //SEG218 [121] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
+  //SEG352 [191] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
     lda #<SCREEN
     sta c
     lda #>SCREEN
     sta c+1
     jmp b2
-  //SEG219 [121] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
+  //SEG353 [191] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
   b2_from_b2:
-  //SEG220 [121] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
-  //SEG221 init_screen::@2
+  //SEG354 [191] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
+  //SEG355 init_screen::@2
   b2:
-  //SEG222 [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
+  //SEG356 [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #$14
     sta (c),y
-  //SEG223 [123] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG357 [193] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
     inc c
     bne !+
     inc c+1
   !:
-  //SEG224 [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG358 [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda c+1
     cmp #>SCREEN+$400
     bne b2_from_b2
     lda c
     cmp #<SCREEN+$400
     bne b2_from_b2
-  //SEG225 init_screen::@return
+  //SEG359 init_screen::@return
   breturn:
-  //SEG226 [125] return  [ ]
+  //SEG360 [195] return  [ ]
     rts
 }
 
 Replacing label b1_from_b3 with b1
 Replacing label b2_from_b5 with b2
 Replacing label b1_from_b2 with b1
+Replacing label b2_from_b5 with b2
+Replacing label b1_from_b2 with b1
+Replacing label b2_from_b5 with b2
+Replacing label b1_from_b2 with b1
+Replacing label b2_from_b5 with b2
+Replacing label b1_from_b2 with b1
 Replacing label b1_from_b2 with b1
 Replacing label b4_from_b3 with b4
 Replacing label b3_from_b4 with b3
@@ -12140,10 +18912,22 @@ Removing instruction bbegin:
 Removing instruction init_plot_tables_from_b3:
 Removing instruction lines_from_b1:
 Removing instruction b1_from_b3:
+Removing instruction b1_from_line_ydxi:
+Removing instruction b1_from_b2:
+Removing instruction b2_from_b3:
+Removing instruction b2_from_b5:
 Removing instruction b1_from_line_xdyi:
 Removing instruction b1_from_b2:
 Removing instruction b2_from_b3:
 Removing instruction b2_from_b5:
+Removing instruction b1_from_line_ydxd:
+Removing instruction b1_from_b2:
+Removing instruction b2_from_b3:
+Removing instruction b2_from_b5:
+Removing instruction b1_from_line_xdyd:
+Removing instruction b1_from_b2:
+Removing instruction b2_from_b3:
+Removing instruction b2_from_b5:
 Removing instruction b1_from_b2:
 Removing instruction b3_from_b4:
 Removing instruction b4_from_b3:
@@ -12179,8 +18963,8 @@ ASSEMBLER
   lines_x: .byte $3c, $50, $6e, $50, $3c, $28, $a, $28, $3c
   lines_y: .byte $a, $28, $3c, $50, $6e, $50, $3c, $28, $a
 //SEG1 @begin
-//SEG2 @7
-b7:
+//SEG2 @10
+b10:
 //SEG3 [0] call main param-assignment [ ]
   jsr main
 //SEG4 @end
@@ -12199,13 +18983,13 @@ main: {
     lda #$18
     sta D018
   //SEG10 [5] call init_screen param-assignment [ ]
-  //SEG11 [116] phi from main to init_screen [phi:main->init_screen]
+  //SEG11 [186] phi from main to init_screen [phi:main->init_screen]
   init_screen_from_main:
     jsr init_screen
   //SEG12 main::@3
   b3:
   //SEG13 [6] call init_plot_tables param-assignment [ ]
-  //SEG14 [91] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
+  //SEG14 [161] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
     jsr init_plot_tables
   //SEG15 main::@1
   b1:
@@ -12254,13 +19038,13 @@ lines: {
     tax
   //SEG32 [16] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] -- zpby1=yby 
     sty line.x0
-  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- zpby1=zpby2 
-    lda _2
-    sta line.x1
-  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- yby=zpby1 
-    ldy _3
-  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1=xby 
-    stx line.y1
+  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- yby=zpby1 
+    ldy _2
+  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- zpby1=zpby2 
+    lda _3
+    sta line.y0
+  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
+    // (byte) line::y1#0 = (byte~) lines::$5  // register copy reg byte x
   //SEG36 [20] call line param-assignment [ lines::l#2 ]
     jsr line
   //SEG37 lines::@3
@@ -12279,191 +19063,379 @@ lines: {
 //SEG42 line
 line: {
     .label x0 = 5
-    .label x1 = 8
-    .label y1 = 9
-    .label xd = 10
-  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_zpby2_then_la1 
-    lda x0
-    cmp x1
-    bcs b1
-  //SEG44 line::@9
-  b9:
-  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=zpby2_minus_zpby3 
-    lda x1
+    .label y0 = 3
+    .label xd = 8
+    .label yd = 4
+  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_yby_then_la1 
+    cpy x0
+    bcc b1
+  //SEG44 line::@15
+  b15:
+  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=yby_minus_zpby2 
+    tya
     sec
     sbc x0
     sta xd
-  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b2
-  //SEG47 line::@10
-  b10:
-  //SEG48 [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby=zpby1_minus_yby 
-    sty $ff
-    lda y1
+  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b2
+  //SEG47 line::@16
+  b16:
+  //SEG48 [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1=xby_minus_zpby2 
+    txa
     sec
-    sbc $ff
-    tax
-  //SEG49 [28] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby_ge_zpby1_then_la1 
-    cpx xd
+    sbc y0
+    sta yd
+  //SEG49 [28] if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
     bcs b3
-  //SEG50 line::@11
-  b11:
-  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyi::x#0 ] -- zpby1=zpby2 
+  //SEG50 line::@17
+  b17:
+  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#1 line_xdyi::x#0 ] -- zpby1=zpby2 
     lda x0
     sta line_xdyi.x
-  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=yby 
-    sty line_xdyi.y
-  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=zpby2 
-    lda x1
-    sta line_xdyi.x1
-  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
-    // (byte) line_xdyi::xd#0 = (byte) line::xd#1  // register copy zp ZP_BYTE:10
-  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=xby 
-    stx line_xdyi.yd
+  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyi.y
+  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=yby 
+    sty line_xdyi.x1
+  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
   //SEG56 [34] call line_xdyi param-assignment [ ]
+  //SEG57 [116] phi from line::@17 to line_xdyi [phi:line::@17->line_xdyi]
+  line_xdyi_from_b17:
+  //SEG58 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#0 [phi:line::@17->line_xdyi#0] -- register_copy 
+  //SEG59 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#0 [phi:line::@17->line_xdyi#1] -- register_copy 
+  //SEG60 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#0 [phi:line::@17->line_xdyi#2] -- register_copy 
+  //SEG61 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#0 [phi:line::@17->line_xdyi#3] -- register_copy 
+  //SEG62 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#0 [phi:line::@17->line_xdyi#4] -- register_copy 
     jsr line_xdyi
-  //SEG57 line::@return
+  //SEG63 line::@return
   breturn:
-  //SEG58 [35] return  [ ]
+  //SEG64 [35] return  [ ]
     rts
-  //SEG59 line::@3
+  //SEG65 line::@3
   b3:
-  //SEG60 [36] (byte) plot::x#2 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#2 ] -- xby=zpby1 
-    ldx x0
-  //SEG61 [37] (byte) plot::y#2 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#2 plot::y#2 ]
-    // (byte) plot::y#2 = (byte) line::y0#0  // register copy reg byte y
-  //SEG62 [38] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG63 [62] phi from line::@3 to plot [phi:line::@3->plot]
-  plot_from_b3:
-  //SEG64 [62] phi (byte) plot::y#9 = (byte) plot::y#2 [phi:line::@3->plot#0] -- register_copy 
-  //SEG65 [62] phi (byte) plot::x#9 = (byte) plot::x#2 [phi:line::@3->plot#1] -- register_copy 
-    jsr plot
-  //SEG66 line::@19
-  b19:
-  //SEG67 [39] (byte) plot::x#3 ← (byte) line::x1#0 [ line::y1#0 plot::x#3 ] -- xby=zpby1 
-    ldx x1
-  //SEG68 [40] (byte) plot::y#3 ← (byte) line::y1#0 [ plot::x#3 plot::y#3 ] -- yby=zpby1 
-    ldy y1
-  //SEG69 [41] call plot param-assignment [ ]
-  //SEG70 [62] phi from line::@19 to plot [phi:line::@19->plot]
-  plot_from_b19:
-  //SEG71 [62] phi (byte) plot::y#9 = (byte) plot::y#3 [phi:line::@19->plot#0] -- register_copy 
-  //SEG72 [62] phi (byte) plot::x#9 = (byte) plot::x#3 [phi:line::@19->plot#1] -- register_copy 
-    jsr plot
+  //SEG66 [36] (byte) line_ydxi::y#0 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y
+  //SEG67 [37] (byte) line_ydxi::x#0 ← (byte) line::x0#0 [ line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxi.x
+  //SEG68 [38] (byte) line_ydxi::y1#0 ← (byte) line::y1#0 [ line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 ] -- zpby1=xby 
+    stx line_ydxi.y1
+  //SEG69 [39] (byte) line_ydxi::yd#0 ← (byte) line::yd#1 [ line::xd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 ]
+    // (byte) line_ydxi::yd#0 = (byte) line::yd#1  // register copy zp ZP_BYTE:4
+  //SEG70 [40] (byte) line_ydxi::xd#0 ← (byte) line::xd#1 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG71 [41] call line_ydxi param-assignment [ ]
+  //SEG72 [86] phi from line::@3 to line_ydxi [phi:line::@3->line_ydxi]
+  line_ydxi_from_b3:
+  //SEG73 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#0 [phi:line::@3->line_ydxi#0] -- register_copy 
+  //SEG74 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#0 [phi:line::@3->line_ydxi#1] -- register_copy 
+  //SEG75 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#0 [phi:line::@3->line_ydxi#2] -- register_copy 
+  //SEG76 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#0 [phi:line::@3->line_ydxi#3] -- register_copy 
+  //SEG77 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#0 [phi:line::@3->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
-  //SEG73 line::@2
+  //SEG78 line::@2
   b2:
-  //SEG74 [42] (byte) plot::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#0 ] -- xby=zpby1 
-    ldx x0
-  //SEG75 [43] (byte) plot::y#0 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#0 plot::y#0 ]
-    // (byte) plot::y#0 = (byte) line::y0#0  // register copy reg byte y
-  //SEG76 [44] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG77 [62] phi from line::@2 to plot [phi:line::@2->plot]
-  plot_from_b2:
-  //SEG78 [62] phi (byte) plot::y#9 = (byte) plot::y#0 [phi:line::@2->plot#0] -- register_copy 
-  //SEG79 [62] phi (byte) plot::x#9 = (byte) plot::x#0 [phi:line::@2->plot#1] -- register_copy 
-    jsr plot
-  //SEG80 line::@17
-  b17:
-  //SEG81 [45] (byte) plot::x#1 ← (byte) line::x1#0 [ line::y1#0 plot::x#1 ] -- xby=zpby1 
-    ldx x1
-  //SEG82 [46] (byte) plot::y#1 ← (byte) line::y1#0 [ plot::x#1 plot::y#1 ] -- yby=zpby1 
-    ldy y1
-  //SEG83 [47] call plot param-assignment [ ]
-  //SEG84 [62] phi from line::@17 to plot [phi:line::@17->plot]
-  plot_from_b17:
-  //SEG85 [62] phi (byte) plot::y#9 = (byte) plot::y#1 [phi:line::@17->plot#0] -- register_copy 
-  //SEG86 [62] phi (byte) plot::x#9 = (byte) plot::x#1 [phi:line::@17->plot#1] -- register_copy 
-    jsr plot
-    jmp breturn
-  //SEG87 line::@1
-  b1:
-  //SEG88 [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- aby=zpby1_minus_zpby2 
-    lda x1
+  //SEG79 [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
     sec
-    sbc x0
-  //SEG89 [49] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b7
-  //SEG90 line::@15
-  b15:
-  //SEG91 [50] (byte) plot::x#6 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#6 ] -- xby=zpby1 
-    ldx x0
-  //SEG92 [51] (byte) plot::y#6 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#6 plot::y#6 ]
-    // (byte) plot::y#6 = (byte) line::y0#0  // register copy reg byte y
-  //SEG93 [52] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG94 [62] phi from line::@15 to plot [phi:line::@15->plot]
-  plot_from_b15:
-  //SEG95 [62] phi (byte) plot::y#9 = (byte) plot::y#6 [phi:line::@15->plot#0] -- register_copy 
-  //SEG96 [62] phi (byte) plot::x#9 = (byte) plot::x#6 [phi:line::@15->plot#1] -- register_copy 
-    jsr plot
-  //SEG97 line::@24
-  b24:
-  //SEG98 [53] (byte) plot::x#7 ← (byte) line::x1#0 [ line::y1#0 plot::x#7 ] -- xby=zpby1 
-    ldx x1
-  //SEG99 [54] (byte) plot::y#7 ← (byte) line::y1#0 [ plot::x#7 plot::y#7 ] -- yby=zpby1 
-    ldy y1
-  //SEG100 [55] call plot param-assignment [ ]
-  //SEG101 [62] phi from line::@24 to plot [phi:line::@24->plot]
-  plot_from_b24:
-  //SEG102 [62] phi (byte) plot::y#9 = (byte) plot::y#7 [phi:line::@24->plot#0] -- register_copy 
-  //SEG103 [62] phi (byte) plot::x#9 = (byte) plot::x#7 [phi:line::@24->plot#1] -- register_copy 
-    jsr plot
+    sbc $ff
+    sta yd
+  //SEG80 [43] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b6
+  //SEG81 line::@20
+  b20:
+  //SEG82 [44] (byte) line_xdyd::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyd::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x
+  //SEG83 [45] (byte) line_xdyd::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyd.y
+  //SEG84 [46] (byte) line_xdyd::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 ] -- zpby1=yby 
+    sty line_xdyd.x1
+  //SEG85 [47] (byte) line_xdyd::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG86 [48] (byte) line_xdyd::yd#0 ← (byte) line::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG87 [49] call line_xdyd param-assignment [ ]
+  //SEG88 [146] phi from line::@20 to line_xdyd [phi:line::@20->line_xdyd]
+  line_xdyd_from_b20:
+  //SEG89 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#0 [phi:line::@20->line_xdyd#0] -- register_copy 
+  //SEG90 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#0 [phi:line::@20->line_xdyd#1] -- register_copy 
+  //SEG91 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#0 [phi:line::@20->line_xdyd#2] -- register_copy 
+  //SEG92 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#0 [phi:line::@20->line_xdyd#3] -- register_copy 
+  //SEG93 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#0 [phi:line::@20->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
     jmp breturn
-  //SEG104 line::@7
-  b7:
-  //SEG105 [56] (byte) plot::x#4 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#4 ] -- xby=zpby1 
-    ldx x0
-  //SEG106 [57] (byte) plot::y#4 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#4 plot::y#4 ]
-    // (byte) plot::y#4 = (byte) line::y0#0  // register copy reg byte y
-  //SEG107 [58] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG108 [62] phi from line::@7 to plot [phi:line::@7->plot]
-  plot_from_b7:
-  //SEG109 [62] phi (byte) plot::y#9 = (byte) plot::y#4 [phi:line::@7->plot#0] -- register_copy 
-  //SEG110 [62] phi (byte) plot::x#9 = (byte) plot::x#4 [phi:line::@7->plot#1] -- register_copy 
-    jsr plot
-  //SEG111 line::@22
-  b22:
-  //SEG112 [59] (byte) plot::x#5 ← (byte) line::x1#0 [ line::y1#0 plot::x#5 ] -- xby=zpby1 
-    ldx x1
-  //SEG113 [60] (byte) plot::y#5 ← (byte) line::y1#0 [ plot::x#5 plot::y#5 ] -- yby=zpby1 
-    ldy y1
-  //SEG114 [61] call plot param-assignment [ ]
-  //SEG115 [62] phi from line::@22 to plot [phi:line::@22->plot]
-  plot_from_b22:
-  //SEG116 [62] phi (byte) plot::y#9 = (byte) plot::y#5 [phi:line::@22->plot#0] -- register_copy 
-  //SEG117 [62] phi (byte) plot::x#9 = (byte) plot::x#5 [phi:line::@22->plot#1] -- register_copy 
-    jsr plot
+  //SEG94 line::@6
+  b6:
+  //SEG95 [50] (byte) line_ydxd::y#0 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 ] -- zpby1=xby 
+    stx line_ydxd.y
+  //SEG96 [51] (byte) line_ydxd::x#0 ← (byte) line::x1#0 [ line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 ] -- zpby1=yby 
+    sty line_ydxd.x
+  //SEG97 [52] (byte) line_ydxd::y1#0 ← (byte) line::y0#0 [ line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y1
+  //SEG98 [53] (byte) line_ydxd::yd#0 ← (byte) line::yd#0 [ line::xd#1 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG99 [54] (byte) line_ydxd::xd#0 ← (byte) line::xd#1 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG100 [55] call line_ydxd param-assignment [ ]
+  //SEG101 [131] phi from line::@6 to line_ydxd [phi:line::@6->line_ydxd]
+  line_ydxd_from_b6:
+  //SEG102 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#0 [phi:line::@6->line_ydxd#0] -- register_copy 
+  //SEG103 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#0 [phi:line::@6->line_ydxd#1] -- register_copy 
+  //SEG104 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#0 [phi:line::@6->line_ydxd#2] -- register_copy 
+  //SEG105 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#0 [phi:line::@6->line_ydxd#3] -- register_copy 
+  //SEG106 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#0 [phi:line::@6->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG107 line::@1
+  b1:
+  //SEG108 [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1=zpby2_minus_yby 
+    sty $ff
+    lda x0
+    sec
+    sbc $ff
+    sta xd
+  //SEG109 [57] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b9
+  //SEG110 line::@23
+  b23:
+  //SEG111 [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1=xby_minus_zpby2 
+    txa
+    sec
+    sbc y0
+    sta yd
+  //SEG112 [59] if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b10
+  //SEG113 line::@24
+  b24:
+  //SEG114 [60] (byte) line_xdyd::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_xdyd::x#1 ] -- zpby1=yby 
+    sty line_xdyd.x
+  //SEG115 [61] (byte) line_xdyd::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 ] -- zpby1=xby 
+    stx line_xdyd.y
+  //SEG116 [62] (byte) line_xdyd::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x1
+  //SEG117 [63] (byte) line_xdyd::xd#1 ← (byte) line::xd#0 [ line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG118 [64] (byte) line_xdyd::yd#1 ← (byte) line::yd#3 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG119 [65] call line_xdyd param-assignment [ ]
+  //SEG120 [146] phi from line::@24 to line_xdyd [phi:line::@24->line_xdyd]
+  line_xdyd_from_b24:
+  //SEG121 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#1 [phi:line::@24->line_xdyd#0] -- register_copy 
+  //SEG122 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#1 [phi:line::@24->line_xdyd#1] -- register_copy 
+  //SEG123 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#1 [phi:line::@24->line_xdyd#2] -- register_copy 
+  //SEG124 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#1 [phi:line::@24->line_xdyd#3] -- register_copy 
+  //SEG125 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#1 [phi:line::@24->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
+    jmp breturn
+  //SEG126 line::@10
+  b10:
+  //SEG127 [66] (byte) line_ydxd::y#1 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y
+  //SEG128 [67] (byte) line_ydxd::x#1 ← (byte) line::x0#0 [ line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxd.x
+  //SEG129 [68] (byte) line_ydxd::y1#1 ← (byte) line::y1#0 [ line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 ] -- zpby1=xby 
+    stx line_ydxd.y1
+  //SEG130 [69] (byte) line_ydxd::yd#1 ← (byte) line::yd#3 [ line::xd#0 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG131 [70] (byte) line_ydxd::xd#1 ← (byte) line::xd#0 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG132 [71] call line_ydxd param-assignment [ ]
+  //SEG133 [131] phi from line::@10 to line_ydxd [phi:line::@10->line_ydxd]
+  line_ydxd_from_b10:
+  //SEG134 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#1 [phi:line::@10->line_ydxd#0] -- register_copy 
+  //SEG135 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#1 [phi:line::@10->line_ydxd#1] -- register_copy 
+  //SEG136 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#1 [phi:line::@10->line_ydxd#2] -- register_copy 
+  //SEG137 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#1 [phi:line::@10->line_ydxd#3] -- register_copy 
+  //SEG138 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#1 [phi:line::@10->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG139 line::@9
+  b9:
+  //SEG140 [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
+    sec
+    sbc $ff
+    sta yd
+  //SEG141 [73] if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b13
+  //SEG142 line::@27
+  b27:
+  //SEG143 [74] (byte) line_xdyi::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#10 line_xdyi::x#1 ] -- zpby1=yby 
+    sty line_xdyi.x
+  //SEG144 [75] (byte) line_xdyi::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 ] -- zpby1=xby 
+    stx line_xdyi.y
+  //SEG145 [76] (byte) line_xdyi::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyi.x1
+  //SEG146 [77] (byte) line_xdyi::xd#1 ← (byte) line::xd#0 [ line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG147 [78] (byte) line_xdyi::yd#1 ← (byte) line::yd#10 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
+  //SEG148 [79] call line_xdyi param-assignment [ ]
+  //SEG149 [116] phi from line::@27 to line_xdyi [phi:line::@27->line_xdyi]
+  line_xdyi_from_b27:
+  //SEG150 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#1 [phi:line::@27->line_xdyi#0] -- register_copy 
+  //SEG151 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#1 [phi:line::@27->line_xdyi#1] -- register_copy 
+  //SEG152 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line::@27->line_xdyi#2] -- register_copy 
+  //SEG153 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#1 [phi:line::@27->line_xdyi#3] -- register_copy 
+  //SEG154 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#1 [phi:line::@27->line_xdyi#4] -- register_copy 
+    jsr line_xdyi
+    jmp breturn
+  //SEG155 line::@13
+  b13:
+  //SEG156 [80] (byte) line_ydxi::y#1 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 ] -- zpby1=xby 
+    stx line_ydxi.y
+  //SEG157 [81] (byte) line_ydxi::x#1 ← (byte) line::x1#0 [ line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 ] -- zpby1=yby 
+    sty line_ydxi.x
+  //SEG158 [82] (byte) line_ydxi::y1#1 ← (byte) line::y0#0 [ line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y1
+  //SEG159 [83] (byte) line_ydxi::yd#1 ← (byte) line::yd#10 [ line::xd#0 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 ]
+    // (byte) line_ydxi::yd#1 = (byte) line::yd#10  // register copy zp ZP_BYTE:4
+  //SEG160 [84] (byte) line_ydxi::xd#1 ← (byte) line::xd#0 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG161 [85] call line_ydxi param-assignment [ ]
+  //SEG162 [86] phi from line::@13 to line_ydxi [phi:line::@13->line_ydxi]
+  line_ydxi_from_b13:
+  //SEG163 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#1 [phi:line::@13->line_ydxi#0] -- register_copy 
+  //SEG164 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#1 [phi:line::@13->line_ydxi#1] -- register_copy 
+  //SEG165 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#1 [phi:line::@13->line_ydxi#2] -- register_copy 
+  //SEG166 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#1 [phi:line::@13->line_ydxi#3] -- register_copy 
+  //SEG167 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#1 [phi:line::@13->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
 }
-//SEG118 plot
+//SEG168 line_ydxi
+line_ydxi: {
+    .label y = 7
+    .label x = 6
+    .label y1 = 5
+    .label yd = 4
+    .label xd = 3
+    .label e = 8
+  //SEG169 [87] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG170 [88] phi from line_ydxi line_ydxi::@2 to line_ydxi::@1 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1]
+  //SEG171 [88] phi (byte) line_ydxi::e#3 = (byte) line_ydxi::e#0 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#0] -- register_copy 
+  //SEG172 [88] phi (byte) line_ydxi::y#3 = (byte) line_ydxi::y#6 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#1] -- register_copy 
+  //SEG173 [88] phi (byte) line_ydxi::x#3 = (byte) line_ydxi::x#5 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#2] -- register_copy 
+  //SEG174 line_ydxi::@1
+  b1:
+  //SEG175 [89] (byte) plot::x#2 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 ] -- xby=zpby1 
+    ldx x
+  //SEG176 [90] (byte) plot::y#2 ← (byte) line_ydxi::y#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 plot::y#2 ] -- yby=zpby1 
+    ldy y
+  //SEG177 [91] call plot param-assignment [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  //SEG178 [101] phi from line_ydxi::@1 to plot [phi:line_ydxi::@1->plot]
+  plot_from_b1:
+  //SEG179 [101] phi (byte) plot::y#4 = (byte) plot::y#2 [phi:line_ydxi::@1->plot#0] -- register_copy 
+  //SEG180 [101] phi (byte) plot::x#4 = (byte) plot::x#2 [phi:line_ydxi::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG181 line_ydxi::@5
+  b5:
+  //SEG182 [92] (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::e#3 line_ydxi::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG183 [93] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG184 [94] if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2
+  //SEG185 line_ydxi::@3
+  b3:
+  //SEG186 [95] (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG187 [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG188 [97] phi from line_ydxi::@3 line_ydxi::@5 to line_ydxi::@2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2]
+  //SEG189 [97] phi (byte) line_ydxi::e#6 = (byte) line_ydxi::e#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#0] -- register_copy 
+  //SEG190 [97] phi (byte) line_ydxi::x#6 = (byte) line_ydxi::x#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#1] -- register_copy 
+  //SEG191 line_ydxi::@2
+  b2:
+  //SEG192 [98] (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 line_ydxi::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG193 [99] if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1
+  //SEG194 line_ydxi::@return
+  breturn:
+  //SEG195 [100] return  [ ]
+    rts
+}
+//SEG196 plot
 plot: {
-    .label _5 = 15
-    .label plotter_x = 6
-    .label plotter_y = 13
-    .label plotter = 6
-  //SEG119 [63] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::$0 ] -- aby=cowo1_staridx_xby 
+    .label _5 = 31
+    .label plotter_x = 27
+    .label plotter_y = 29
+    .label plotter = 27
+  //SEG197 [102] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::$0 ] -- aby=cowo1_staridx_xby 
     lda plot_xhi,x
-  //SEG120 [64] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#9 plot::y#9 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG198 [103] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#4 plot::y#4 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_x+1
     lda #<0
     sta plotter_x
-  //SEG121 [65] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
+  //SEG199 [104] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
     lda plot_xlo,x
-  //SEG122 [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG200 [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_x
-  //SEG123 [67] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
+  //SEG201 [106] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
     lda plot_yhi,y
-  //SEG124 [68] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG202 [107] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_y+1
     lda #<0
     sta plotter_y
-  //SEG125 [69] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
+  //SEG203 [108] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
     lda plot_ylo,y
-  //SEG126 [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG204 [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_y
-  //SEG127 [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
+  //SEG205 [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
     lda plotter
     clc
     adc plotter_y
@@ -12471,170 +19443,304 @@ plot: {
     lda plotter+1
     adc plotter_y+1
     sta plotter+1
-  //SEG128 [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
+  //SEG206 [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
     ldy #0
     lda (plotter),y
     sta _5
-  //SEG129 [73] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
+  //SEG207 [112] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
     lda plot_bit,x
-  //SEG130 [74] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
+  //SEG208 [113] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
     ora _5
-  //SEG131 [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
+  //SEG209 [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
     sta (plotter),y
-  //SEG132 plot::@return
+  //SEG210 plot::@return
   breturn:
-  //SEG133 [76] return  [ ]
+  //SEG211 [115] return  [ ]
     rts
 }
-//SEG134 line_xdyi
+//SEG212 line_xdyi
 line_xdyi: {
-    .label x = 3
-    .label y = 4
+    .label x = 12
+    .label y = 13
     .label x1 = 11
     .label xd = 10
-    .label yd = 12
-    .label e = 5
-  //SEG135 [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
+    .label yd = 9
+    .label e = 14
+  //SEG213 [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
     lda yd
     lsr
     sta e
-  //SEG136 [78] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
-  //SEG137 [78] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
-  //SEG138 [78] phi (byte) line_xdyi::y#2 = (byte) line_xdyi::y#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
-  //SEG139 [78] phi (byte) line_xdyi::x#2 = (byte) line_xdyi::x#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
-  //SEG140 line_xdyi::@1
+  //SEG214 [118] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
+  //SEG215 [118] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
+  //SEG216 [118] phi (byte) line_xdyi::y#3 = (byte) line_xdyi::y#5 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
+  //SEG217 [118] phi (byte) line_xdyi::x#3 = (byte) line_xdyi::x#6 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
+  //SEG218 line_xdyi::@1
   b1:
-  //SEG141 [79] (byte) plot::x#8 ← (byte) line_xdyi::x#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- xby=zpby1 
+  //SEG219 [119] (byte) plot::x#0 ← (byte) line_xdyi::x#3 [ plot::x#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- xby=zpby1 
     ldx x
-  //SEG142 [80] (byte) plot::y#8 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 plot::y#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- yby=zpby1 
+  //SEG220 [120] (byte) plot::y#0 ← (byte) line_xdyi::y#3 [ plot::x#0 plot::y#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- yby=zpby1 
     ldy y
-  //SEG143 [81] call plot param-assignment [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  //SEG144 [62] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
+  //SEG221 [121] call plot param-assignment [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  //SEG222 [101] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
   plot_from_b1:
-  //SEG145 [62] phi (byte) plot::y#9 = (byte) plot::y#8 [phi:line_xdyi::@1->plot#0] -- register_copy 
-  //SEG146 [62] phi (byte) plot::x#9 = (byte) plot::x#8 [phi:line_xdyi::@1->plot#1] -- register_copy 
+  //SEG223 [101] phi (byte) plot::y#4 = (byte) plot::y#0 [phi:line_xdyi::@1->plot#0] -- register_copy 
+  //SEG224 [101] phi (byte) plot::x#4 = (byte) plot::x#0 [phi:line_xdyi::@1->plot#1] -- register_copy 
     jsr plot
-  //SEG147 line_xdyi::@5
+  //SEG225 line_xdyi::@5
   b5:
-  //SEG148 [82] (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::e#3 line_xdyi::x#1 ] -- zpby1=zpby1_plus_1 
+  //SEG226 [122] (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::e#3 line_xdyi::x#2 ] -- zpby1=zpby1_plus_1 
     inc x
-  //SEG149 [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+  //SEG227 [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
     lda e
     clc
     adc yd
     sta e
-  //SEG150 [84] if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+  //SEG228 [124] if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
     lda xd
     cmp e
     bcs b2
-  //SEG151 line_xdyi::@3
+  //SEG229 line_xdyi::@3
   b3:
-  //SEG152 [85] (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#1 ] -- zpby1=zpby1_plus_1 
+  //SEG230 [125] (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#2 ] -- zpby1=zpby1_plus_1 
     inc y
-  //SEG153 [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+  //SEG231 [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
     lda e
     sec
     sbc xd
     sta e
-  //SEG154 [87] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
-  //SEG155 [87] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
-  //SEG156 [87] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
-  //SEG157 line_xdyi::@2
+  //SEG232 [127] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
+  //SEG233 [127] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
+  //SEG234 [127] phi (byte) line_xdyi::y#6 = (byte) line_xdyi::y#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
+  //SEG235 line_xdyi::@2
   b2:
-  //SEG158 [88] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
+  //SEG236 [128] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
     lda x1
     clc
     adc #1
-  //SEG159 [89] if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
+  //SEG237 [129] if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
     cmp x
     bcs b1
-  //SEG160 line_xdyi::@return
+  //SEG238 line_xdyi::@return
   breturn:
-  //SEG161 [90] return  [ ]
+  //SEG239 [130] return  [ ]
     rts
 }
-//SEG162 init_plot_tables
+//SEG240 line_ydxd
+line_ydxd: {
+    .label y = 19
+    .label x = 18
+    .label y1 = 17
+    .label yd = 16
+    .label xd = 15
+    .label e = 20
+  //SEG241 [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG242 [133] phi from line_ydxd line_ydxd::@2 to line_ydxd::@1 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1]
+  //SEG243 [133] phi (byte) line_ydxd::e#3 = (byte) line_ydxd::e#0 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#0] -- register_copy 
+  //SEG244 [133] phi (byte) line_ydxd::y#3 = (byte) line_ydxd::y#6 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#1] -- register_copy 
+  //SEG245 [133] phi (byte) line_ydxd::x#3 = (byte) line_ydxd::x#5 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#2] -- register_copy 
+  //SEG246 line_ydxd::@1
+  b1:
+  //SEG247 [134] (byte) plot::x#3 ← (byte) line_ydxd::x#3 [ plot::x#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG248 [135] (byte) plot::y#3 ← (byte) line_ydxd::y#3 [ plot::x#3 plot::y#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG249 [136] call plot param-assignment [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  //SEG250 [101] phi from line_ydxd::@1 to plot [phi:line_ydxd::@1->plot]
+  plot_from_b1:
+  //SEG251 [101] phi (byte) plot::y#4 = (byte) plot::y#3 [phi:line_ydxd::@1->plot#0] -- register_copy 
+  //SEG252 [101] phi (byte) plot::x#4 = (byte) plot::x#3 [phi:line_ydxd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG253 line_ydxd::@5
+  b5:
+  //SEG254 [137] (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::e#3 line_ydxd::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG255 [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG256 [139] if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2
+  //SEG257 line_ydxd::@3
+  b3:
+  //SEG258 [140] (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#2 ] -- zpby1=zpby1_minus_1 
+    dec x
+  //SEG259 [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG260 [142] phi from line_ydxd::@3 line_ydxd::@5 to line_ydxd::@2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2]
+  //SEG261 [142] phi (byte) line_ydxd::e#6 = (byte) line_ydxd::e#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#0] -- register_copy 
+  //SEG262 [142] phi (byte) line_ydxd::x#6 = (byte) line_ydxd::x#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#1] -- register_copy 
+  //SEG263 line_ydxd::@2
+  b2:
+  //SEG264 [143] (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 line_ydxd::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG265 [144] if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1
+  //SEG266 line_ydxd::@return
+  breturn:
+  //SEG267 [145] return  [ ]
+    rts
+}
+//SEG268 line_xdyd
+line_xdyd: {
+    .label x = 24
+    .label y = 25
+    .label x1 = 23
+    .label xd = 22
+    .label yd = 21
+    .label e = 26
+  //SEG269 [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda yd
+    lsr
+    sta e
+  //SEG270 [148] phi from line_xdyd line_xdyd::@2 to line_xdyd::@1 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1]
+  //SEG271 [148] phi (byte) line_xdyd::e#3 = (byte) line_xdyd::e#0 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#0] -- register_copy 
+  //SEG272 [148] phi (byte) line_xdyd::y#3 = (byte) line_xdyd::y#5 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#1] -- register_copy 
+  //SEG273 [148] phi (byte) line_xdyd::x#3 = (byte) line_xdyd::x#6 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#2] -- register_copy 
+  //SEG274 line_xdyd::@1
+  b1:
+  //SEG275 [149] (byte) plot::x#1 ← (byte) line_xdyd::x#3 [ plot::x#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG276 [150] (byte) plot::y#1 ← (byte) line_xdyd::y#3 [ plot::x#1 plot::y#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG277 [151] call plot param-assignment [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  //SEG278 [101] phi from line_xdyd::@1 to plot [phi:line_xdyd::@1->plot]
+  plot_from_b1:
+  //SEG279 [101] phi (byte) plot::y#4 = (byte) plot::y#1 [phi:line_xdyd::@1->plot#0] -- register_copy 
+  //SEG280 [101] phi (byte) plot::x#4 = (byte) plot::x#1 [phi:line_xdyd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG281 line_xdyd::@5
+  b5:
+  //SEG282 [152] (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::e#3 line_xdyd::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG283 [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc yd
+    sta e
+  //SEG284 [154] if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda xd
+    cmp e
+    bcs b2
+  //SEG285 line_xdyd::@3
+  b3:
+  //SEG286 [155] (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#2 ] -- zpby1=zpby1_minus_1 
+    dec y
+  //SEG287 [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc xd
+    sta e
+  //SEG288 [157] phi from line_xdyd::@3 line_xdyd::@5 to line_xdyd::@2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2]
+  //SEG289 [157] phi (byte) line_xdyd::e#6 = (byte) line_xdyd::e#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#0] -- register_copy 
+  //SEG290 [157] phi (byte) line_xdyd::y#6 = (byte) line_xdyd::y#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#1] -- register_copy 
+  //SEG291 line_xdyd::@2
+  b2:
+  //SEG292 [158] (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 line_xdyd::$8 ] -- aby=zpby1_plus_1 
+    lda x1
+    clc
+    adc #1
+  //SEG293 [159] if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp x
+    bcs b1
+  //SEG294 line_xdyd::@return
+  breturn:
+  //SEG295 [160] return  [ ]
+    rts
+}
+//SEG296 init_plot_tables
 init_plot_tables: {
     .label _6 = 2
-    .label yoffs = 6
-  //SEG163 [92] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
+    .label yoffs = 27
+  //SEG297 [162] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
   b1_from_init_plot_tables:
-  //SEG164 [92] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
+  //SEG298 [162] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
     ldy #$80
-  //SEG165 [92] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
+  //SEG299 [162] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
     ldx #0
     jmp b1
-  //SEG166 [92] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
-  //SEG167 [92] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
-  //SEG168 [92] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
-  //SEG169 init_plot_tables::@1
+  //SEG300 [162] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
+  //SEG301 [162] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
+  //SEG302 [162] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
+  //SEG303 init_plot_tables::@1
   b1:
-  //SEG170 [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
+  //SEG304 [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
     txa
     and #$f8
-  //SEG171 [94] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
+  //SEG305 [164] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
     sta plot_xlo,x
-  //SEG172 [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
+  //SEG306 [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
     lda #>BITMAP
     sta plot_xhi,x
-  //SEG173 [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
+  //SEG307 [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
     tya
     sta plot_bit,x
-  //SEG174 [97] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
+  //SEG308 [167] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
     tya
     lsr
     tay
-  //SEG175 [98] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
+  //SEG309 [168] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
     cpy #0
     bne b10
-  //SEG176 [99] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
+  //SEG310 [169] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
   b2_from_b1:
-  //SEG177 [99] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
+  //SEG311 [169] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
     ldy #$80
-  //SEG178 init_plot_tables::@2
+  //SEG312 init_plot_tables::@2
   b2:
-  //SEG179 [100] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
+  //SEG313 [170] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
     inx
-  //SEG180 [101] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
+  //SEG314 [171] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b1
-  //SEG181 [102] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
+  //SEG315 [172] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
   b3_from_b2:
-  //SEG182 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
+  //SEG316 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
     lda #0
     sta yoffs
     sta yoffs+1
-  //SEG183 [102] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
+  //SEG317 [172] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
     ldx #0
     jmp b3
-  //SEG184 [102] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
-  //SEG185 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
-  //SEG186 [102] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
-  //SEG187 init_plot_tables::@3
+  //SEG318 [172] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
+  //SEG319 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
+  //SEG320 [172] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
+  //SEG321 init_plot_tables::@3
   b3:
-  //SEG188 [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
+  //SEG322 [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
     txa
     and #7
     sta _6
-  //SEG189 [104] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
+  //SEG323 [174] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
     lda yoffs
-  //SEG190 [105] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
+  //SEG324 [175] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
     ora _6
-  //SEG191 [106] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG325 [176] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_ylo,x
-  //SEG192 [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
+  //SEG326 [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
     lda yoffs+1
-  //SEG193 [108] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG327 [178] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_yhi,x
-  //SEG194 [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
+  //SEG328 [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
     txa
     and #7
-  //SEG195 [110] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
+  //SEG329 [180] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
     cmp #7
     bne b4
-  //SEG196 init_plot_tables::@7
+  //SEG330 init_plot_tables::@7
   b7:
-  //SEG197 [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
+  //SEG331 [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
     lda yoffs
     clc
     adc #<$140
@@ -12642,92 +19748,92 @@ init_plot_tables: {
     lda yoffs+1
     adc #>$140
     sta yoffs+1
-  //SEG198 [112] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
-  //SEG199 [112] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
-  //SEG200 init_plot_tables::@4
+  //SEG332 [182] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
+  //SEG333 [182] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
+  //SEG334 init_plot_tables::@4
   b4:
-  //SEG201 [113] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
+  //SEG335 [183] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
     inx
-  //SEG202 [114] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
+  //SEG336 [184] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b3
-  //SEG203 init_plot_tables::@return
+  //SEG337 init_plot_tables::@return
   breturn:
-  //SEG204 [115] return  [ ]
+  //SEG338 [185] return  [ ]
     rts
-  //SEG205 init_plot_tables::@10
+  //SEG339 init_plot_tables::@10
   b10:
-  //SEG206 [99] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
-  //SEG207 [99] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
+  //SEG340 [169] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
+  //SEG341 [169] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
     jmp b2
 }
-//SEG208 init_screen
+//SEG342 init_screen
 init_screen: {
-    .label b = 6
-    .label c = 6
-  //SEG209 [117] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
+    .label b = 27
+    .label c = 27
+  //SEG343 [187] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
   b1_from_init_screen:
-  //SEG210 [117] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
+  //SEG344 [187] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
     lda #<BITMAP
     sta b
     lda #>BITMAP
     sta b+1
     jmp b1
-  //SEG211 [117] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
-  //SEG212 [117] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
-  //SEG213 init_screen::@1
+  //SEG345 [187] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
+  //SEG346 [187] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
+  //SEG347 init_screen::@1
   b1:
-  //SEG214 [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
+  //SEG348 [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #0
     sta (b),y
-  //SEG215 [119] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG349 [189] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
     inc b
     bne !+
     inc b+1
   !:
-  //SEG216 [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG350 [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda b+1
     cmp #>BITMAP+$2000
     bne b1
     lda b
     cmp #<BITMAP+$2000
     bne b1
-  //SEG217 [121] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
+  //SEG351 [191] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
   b2_from_b1:
-  //SEG218 [121] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
+  //SEG352 [191] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
     lda #<SCREEN
     sta c
     lda #>SCREEN
     sta c+1
     jmp b2
-  //SEG219 [121] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
-  //SEG220 [121] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
-  //SEG221 init_screen::@2
+  //SEG353 [191] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
+  //SEG354 [191] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
+  //SEG355 init_screen::@2
   b2:
-  //SEG222 [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
+  //SEG356 [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #$14
     sta (c),y
-  //SEG223 [123] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG357 [193] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
     inc c
     bne !+
     inc c+1
   !:
-  //SEG224 [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG358 [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda c+1
     cmp #>SCREEN+$400
     bne b2
     lda c
     cmp #<SCREEN+$400
     bne b2
-  //SEG225 init_screen::@return
+  //SEG359 init_screen::@return
   breturn:
-  //SEG226 [125] return  [ ]
+  //SEG360 [195] return  [ ]
     rts
 }
 
-Removing instruction b7:
+Removing instruction b10:
 Removing instruction bend:
 Removing instruction init_screen_from_main:
 Removing instruction b3:
@@ -12736,22 +19842,33 @@ Removing instruction breturn:
 Removing instruction b1_from_lines:
 Removing instruction b3:
 Removing instruction breturn:
-Removing instruction b9:
-Removing instruction b10:
-Removing instruction b11:
-Removing instruction plot_from_b3:
-Removing instruction b19:
-Removing instruction plot_from_b19:
-Removing instruction plot_from_b2:
-Removing instruction b17:
-Removing instruction plot_from_b17:
 Removing instruction b15:
-Removing instruction plot_from_b15:
+Removing instruction b16:
+Removing instruction b17:
+Removing instruction line_xdyi_from_b17:
+Removing instruction line_ydxi_from_b3:
+Removing instruction b20:
+Removing instruction line_xdyd_from_b20:
+Removing instruction line_ydxd_from_b6:
+Removing instruction b23:
 Removing instruction b24:
-Removing instruction plot_from_b24:
-Removing instruction plot_from_b7:
-Removing instruction b22:
-Removing instruction plot_from_b22:
+Removing instruction line_xdyd_from_b24:
+Removing instruction line_ydxd_from_b10:
+Removing instruction b27:
+Removing instruction line_xdyi_from_b27:
+Removing instruction line_ydxi_from_b13:
+Removing instruction plot_from_b1:
+Removing instruction b5:
+Removing instruction b3:
+Removing instruction breturn:
+Removing instruction breturn:
+Removing instruction plot_from_b1:
+Removing instruction b5:
+Removing instruction b3:
+Removing instruction breturn:
+Removing instruction plot_from_b1:
+Removing instruction b5:
+Removing instruction b3:
 Removing instruction breturn:
 Removing instruction plot_from_b1:
 Removing instruction b5:
@@ -12793,7 +19910,7 @@ ASSEMBLER
   lines_x: .byte $3c, $50, $6e, $50, $3c, $28, $a, $28, $3c
   lines_y: .byte $a, $28, $3c, $50, $6e, $50, $3c, $28, $a
 //SEG1 @begin
-//SEG2 @7
+//SEG2 @10
 //SEG3 [0] call main param-assignment [ ]
   jsr main
 //SEG4 @end
@@ -12811,11 +19928,11 @@ main: {
     lda #$18
     sta D018
   //SEG10 [5] call init_screen param-assignment [ ]
-  //SEG11 [116] phi from main to init_screen [phi:main->init_screen]
+  //SEG11 [186] phi from main to init_screen [phi:main->init_screen]
     jsr init_screen
   //SEG12 main::@3
   //SEG13 [6] call init_plot_tables param-assignment [ ]
-  //SEG14 [91] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
+  //SEG14 [161] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
     jsr init_plot_tables
   //SEG15 main::@1
   b1:
@@ -12861,13 +19978,13 @@ lines: {
     tax
   //SEG32 [16] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] -- zpby1=yby 
     sty line.x0
-  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- zpby1=zpby2 
-    lda _2
-    sta line.x1
-  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- yby=zpby1 
-    ldy _3
-  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1=xby 
-    stx line.y1
+  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- yby=zpby1 
+    ldy _2
+  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- zpby1=zpby2 
+    lda _3
+    sta line.y0
+  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
+    // (byte) line::y1#0 = (byte~) lines::$5  // register copy reg byte x
   //SEG36 [20] call line param-assignment [ lines::l#2 ]
     jsr line
   //SEG37 lines::@3
@@ -12884,175 +20001,360 @@ lines: {
 //SEG42 line
 line: {
     .label x0 = 5
-    .label x1 = 8
-    .label y1 = 9
-    .label xd = 10
-  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_zpby2_then_la1 
-    lda x0
-    cmp x1
-    bcs b1
-  //SEG44 line::@9
-  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=zpby2_minus_zpby3 
-    lda x1
+    .label y0 = 3
+    .label xd = 8
+    .label yd = 4
+  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_yby_then_la1 
+    cpy x0
+    bcc b1
+  //SEG44 line::@15
+  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=yby_minus_zpby2 
+    tya
     sec
     sbc x0
     sta xd
-  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b2
-  //SEG47 line::@10
-  //SEG48 [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby=zpby1_minus_yby 
-    sty $ff
-    lda y1
+  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b2
+  //SEG47 line::@16
+  //SEG48 [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1=xby_minus_zpby2 
+    txa
     sec
-    sbc $ff
-    tax
-  //SEG49 [28] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby_ge_zpby1_then_la1 
-    cpx xd
+    sbc y0
+    sta yd
+  //SEG49 [28] if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
     bcs b3
-  //SEG50 line::@11
-  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyi::x#0 ] -- zpby1=zpby2 
+  //SEG50 line::@17
+  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#1 line_xdyi::x#0 ] -- zpby1=zpby2 
     lda x0
     sta line_xdyi.x
-  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=yby 
-    sty line_xdyi.y
-  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=zpby2 
-    lda x1
-    sta line_xdyi.x1
-  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
-    // (byte) line_xdyi::xd#0 = (byte) line::xd#1  // register copy zp ZP_BYTE:10
-  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=xby 
-    stx line_xdyi.yd
+  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyi.y
+  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=yby 
+    sty line_xdyi.x1
+  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
   //SEG56 [34] call line_xdyi param-assignment [ ]
+  //SEG57 [116] phi from line::@17 to line_xdyi [phi:line::@17->line_xdyi]
+  //SEG58 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#0 [phi:line::@17->line_xdyi#0] -- register_copy 
+  //SEG59 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#0 [phi:line::@17->line_xdyi#1] -- register_copy 
+  //SEG60 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#0 [phi:line::@17->line_xdyi#2] -- register_copy 
+  //SEG61 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#0 [phi:line::@17->line_xdyi#3] -- register_copy 
+  //SEG62 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#0 [phi:line::@17->line_xdyi#4] -- register_copy 
     jsr line_xdyi
-  //SEG57 line::@return
+  //SEG63 line::@return
   breturn:
-  //SEG58 [35] return  [ ]
+  //SEG64 [35] return  [ ]
     rts
-  //SEG59 line::@3
+  //SEG65 line::@3
   b3:
-  //SEG60 [36] (byte) plot::x#2 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#2 ] -- xby=zpby1 
-    ldx x0
-  //SEG61 [37] (byte) plot::y#2 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#2 plot::y#2 ]
-    // (byte) plot::y#2 = (byte) line::y0#0  // register copy reg byte y
-  //SEG62 [38] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG63 [62] phi from line::@3 to plot [phi:line::@3->plot]
-  //SEG64 [62] phi (byte) plot::y#9 = (byte) plot::y#2 [phi:line::@3->plot#0] -- register_copy 
-  //SEG65 [62] phi (byte) plot::x#9 = (byte) plot::x#2 [phi:line::@3->plot#1] -- register_copy 
-    jsr plot
-  //SEG66 line::@19
-  //SEG67 [39] (byte) plot::x#3 ← (byte) line::x1#0 [ line::y1#0 plot::x#3 ] -- xby=zpby1 
-    ldx x1
-  //SEG68 [40] (byte) plot::y#3 ← (byte) line::y1#0 [ plot::x#3 plot::y#3 ] -- yby=zpby1 
-    ldy y1
-  //SEG69 [41] call plot param-assignment [ ]
-  //SEG70 [62] phi from line::@19 to plot [phi:line::@19->plot]
-  //SEG71 [62] phi (byte) plot::y#9 = (byte) plot::y#3 [phi:line::@19->plot#0] -- register_copy 
-  //SEG72 [62] phi (byte) plot::x#9 = (byte) plot::x#3 [phi:line::@19->plot#1] -- register_copy 
-    jsr plot
+  //SEG66 [36] (byte) line_ydxi::y#0 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y
+  //SEG67 [37] (byte) line_ydxi::x#0 ← (byte) line::x0#0 [ line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxi.x
+  //SEG68 [38] (byte) line_ydxi::y1#0 ← (byte) line::y1#0 [ line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 ] -- zpby1=xby 
+    stx line_ydxi.y1
+  //SEG69 [39] (byte) line_ydxi::yd#0 ← (byte) line::yd#1 [ line::xd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 ]
+    // (byte) line_ydxi::yd#0 = (byte) line::yd#1  // register copy zp ZP_BYTE:4
+  //SEG70 [40] (byte) line_ydxi::xd#0 ← (byte) line::xd#1 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG71 [41] call line_ydxi param-assignment [ ]
+  //SEG72 [86] phi from line::@3 to line_ydxi [phi:line::@3->line_ydxi]
+  //SEG73 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#0 [phi:line::@3->line_ydxi#0] -- register_copy 
+  //SEG74 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#0 [phi:line::@3->line_ydxi#1] -- register_copy 
+  //SEG75 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#0 [phi:line::@3->line_ydxi#2] -- register_copy 
+  //SEG76 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#0 [phi:line::@3->line_ydxi#3] -- register_copy 
+  //SEG77 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#0 [phi:line::@3->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
-  //SEG73 line::@2
+  //SEG78 line::@2
   b2:
-  //SEG74 [42] (byte) plot::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#0 ] -- xby=zpby1 
-    ldx x0
-  //SEG75 [43] (byte) plot::y#0 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#0 plot::y#0 ]
-    // (byte) plot::y#0 = (byte) line::y0#0  // register copy reg byte y
-  //SEG76 [44] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG77 [62] phi from line::@2 to plot [phi:line::@2->plot]
-  //SEG78 [62] phi (byte) plot::y#9 = (byte) plot::y#0 [phi:line::@2->plot#0] -- register_copy 
-  //SEG79 [62] phi (byte) plot::x#9 = (byte) plot::x#0 [phi:line::@2->plot#1] -- register_copy 
-    jsr plot
-  //SEG80 line::@17
-  //SEG81 [45] (byte) plot::x#1 ← (byte) line::x1#0 [ line::y1#0 plot::x#1 ] -- xby=zpby1 
-    ldx x1
-  //SEG82 [46] (byte) plot::y#1 ← (byte) line::y1#0 [ plot::x#1 plot::y#1 ] -- yby=zpby1 
-    ldy y1
-  //SEG83 [47] call plot param-assignment [ ]
-  //SEG84 [62] phi from line::@17 to plot [phi:line::@17->plot]
-  //SEG85 [62] phi (byte) plot::y#9 = (byte) plot::y#1 [phi:line::@17->plot#0] -- register_copy 
-  //SEG86 [62] phi (byte) plot::x#9 = (byte) plot::x#1 [phi:line::@17->plot#1] -- register_copy 
-    jsr plot
-    jmp breturn
-  //SEG87 line::@1
-  b1:
-  //SEG88 [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- aby=zpby1_minus_zpby2 
-    lda x1
+  //SEG79 [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
     sec
-    sbc x0
-  //SEG89 [49] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b7
-  //SEG90 line::@15
-  //SEG91 [50] (byte) plot::x#6 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#6 ] -- xby=zpby1 
-    ldx x0
-  //SEG92 [51] (byte) plot::y#6 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#6 plot::y#6 ]
-    // (byte) plot::y#6 = (byte) line::y0#0  // register copy reg byte y
-  //SEG93 [52] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG94 [62] phi from line::@15 to plot [phi:line::@15->plot]
-  //SEG95 [62] phi (byte) plot::y#9 = (byte) plot::y#6 [phi:line::@15->plot#0] -- register_copy 
-  //SEG96 [62] phi (byte) plot::x#9 = (byte) plot::x#6 [phi:line::@15->plot#1] -- register_copy 
-    jsr plot
-  //SEG97 line::@24
-  //SEG98 [53] (byte) plot::x#7 ← (byte) line::x1#0 [ line::y1#0 plot::x#7 ] -- xby=zpby1 
-    ldx x1
-  //SEG99 [54] (byte) plot::y#7 ← (byte) line::y1#0 [ plot::x#7 plot::y#7 ] -- yby=zpby1 
-    ldy y1
-  //SEG100 [55] call plot param-assignment [ ]
-  //SEG101 [62] phi from line::@24 to plot [phi:line::@24->plot]
-  //SEG102 [62] phi (byte) plot::y#9 = (byte) plot::y#7 [phi:line::@24->plot#0] -- register_copy 
-  //SEG103 [62] phi (byte) plot::x#9 = (byte) plot::x#7 [phi:line::@24->plot#1] -- register_copy 
-    jsr plot
+    sbc $ff
+    sta yd
+  //SEG80 [43] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b6
+  //SEG81 line::@20
+  //SEG82 [44] (byte) line_xdyd::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyd::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x
+  //SEG83 [45] (byte) line_xdyd::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyd.y
+  //SEG84 [46] (byte) line_xdyd::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 ] -- zpby1=yby 
+    sty line_xdyd.x1
+  //SEG85 [47] (byte) line_xdyd::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG86 [48] (byte) line_xdyd::yd#0 ← (byte) line::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG87 [49] call line_xdyd param-assignment [ ]
+  //SEG88 [146] phi from line::@20 to line_xdyd [phi:line::@20->line_xdyd]
+  //SEG89 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#0 [phi:line::@20->line_xdyd#0] -- register_copy 
+  //SEG90 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#0 [phi:line::@20->line_xdyd#1] -- register_copy 
+  //SEG91 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#0 [phi:line::@20->line_xdyd#2] -- register_copy 
+  //SEG92 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#0 [phi:line::@20->line_xdyd#3] -- register_copy 
+  //SEG93 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#0 [phi:line::@20->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
     jmp breturn
-  //SEG104 line::@7
-  b7:
-  //SEG105 [56] (byte) plot::x#4 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#4 ] -- xby=zpby1 
-    ldx x0
-  //SEG106 [57] (byte) plot::y#4 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#4 plot::y#4 ]
-    // (byte) plot::y#4 = (byte) line::y0#0  // register copy reg byte y
-  //SEG107 [58] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG108 [62] phi from line::@7 to plot [phi:line::@7->plot]
-  //SEG109 [62] phi (byte) plot::y#9 = (byte) plot::y#4 [phi:line::@7->plot#0] -- register_copy 
-  //SEG110 [62] phi (byte) plot::x#9 = (byte) plot::x#4 [phi:line::@7->plot#1] -- register_copy 
-    jsr plot
-  //SEG111 line::@22
-  //SEG112 [59] (byte) plot::x#5 ← (byte) line::x1#0 [ line::y1#0 plot::x#5 ] -- xby=zpby1 
-    ldx x1
-  //SEG113 [60] (byte) plot::y#5 ← (byte) line::y1#0 [ plot::x#5 plot::y#5 ] -- yby=zpby1 
-    ldy y1
-  //SEG114 [61] call plot param-assignment [ ]
-  //SEG115 [62] phi from line::@22 to plot [phi:line::@22->plot]
-  //SEG116 [62] phi (byte) plot::y#9 = (byte) plot::y#5 [phi:line::@22->plot#0] -- register_copy 
-  //SEG117 [62] phi (byte) plot::x#9 = (byte) plot::x#5 [phi:line::@22->plot#1] -- register_copy 
-    jsr plot
+  //SEG94 line::@6
+  b6:
+  //SEG95 [50] (byte) line_ydxd::y#0 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 ] -- zpby1=xby 
+    stx line_ydxd.y
+  //SEG96 [51] (byte) line_ydxd::x#0 ← (byte) line::x1#0 [ line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 ] -- zpby1=yby 
+    sty line_ydxd.x
+  //SEG97 [52] (byte) line_ydxd::y1#0 ← (byte) line::y0#0 [ line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y1
+  //SEG98 [53] (byte) line_ydxd::yd#0 ← (byte) line::yd#0 [ line::xd#1 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG99 [54] (byte) line_ydxd::xd#0 ← (byte) line::xd#1 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG100 [55] call line_ydxd param-assignment [ ]
+  //SEG101 [131] phi from line::@6 to line_ydxd [phi:line::@6->line_ydxd]
+  //SEG102 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#0 [phi:line::@6->line_ydxd#0] -- register_copy 
+  //SEG103 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#0 [phi:line::@6->line_ydxd#1] -- register_copy 
+  //SEG104 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#0 [phi:line::@6->line_ydxd#2] -- register_copy 
+  //SEG105 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#0 [phi:line::@6->line_ydxd#3] -- register_copy 
+  //SEG106 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#0 [phi:line::@6->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG107 line::@1
+  b1:
+  //SEG108 [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1=zpby2_minus_yby 
+    sty $ff
+    lda x0
+    sec
+    sbc $ff
+    sta xd
+  //SEG109 [57] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b9
+  //SEG110 line::@23
+  //SEG111 [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1=xby_minus_zpby2 
+    txa
+    sec
+    sbc y0
+    sta yd
+  //SEG112 [59] if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b10
+  //SEG113 line::@24
+  //SEG114 [60] (byte) line_xdyd::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_xdyd::x#1 ] -- zpby1=yby 
+    sty line_xdyd.x
+  //SEG115 [61] (byte) line_xdyd::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 ] -- zpby1=xby 
+    stx line_xdyd.y
+  //SEG116 [62] (byte) line_xdyd::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x1
+  //SEG117 [63] (byte) line_xdyd::xd#1 ← (byte) line::xd#0 [ line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG118 [64] (byte) line_xdyd::yd#1 ← (byte) line::yd#3 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG119 [65] call line_xdyd param-assignment [ ]
+  //SEG120 [146] phi from line::@24 to line_xdyd [phi:line::@24->line_xdyd]
+  //SEG121 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#1 [phi:line::@24->line_xdyd#0] -- register_copy 
+  //SEG122 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#1 [phi:line::@24->line_xdyd#1] -- register_copy 
+  //SEG123 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#1 [phi:line::@24->line_xdyd#2] -- register_copy 
+  //SEG124 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#1 [phi:line::@24->line_xdyd#3] -- register_copy 
+  //SEG125 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#1 [phi:line::@24->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
+    jmp breturn
+  //SEG126 line::@10
+  b10:
+  //SEG127 [66] (byte) line_ydxd::y#1 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y
+  //SEG128 [67] (byte) line_ydxd::x#1 ← (byte) line::x0#0 [ line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxd.x
+  //SEG129 [68] (byte) line_ydxd::y1#1 ← (byte) line::y1#0 [ line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 ] -- zpby1=xby 
+    stx line_ydxd.y1
+  //SEG130 [69] (byte) line_ydxd::yd#1 ← (byte) line::yd#3 [ line::xd#0 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG131 [70] (byte) line_ydxd::xd#1 ← (byte) line::xd#0 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG132 [71] call line_ydxd param-assignment [ ]
+  //SEG133 [131] phi from line::@10 to line_ydxd [phi:line::@10->line_ydxd]
+  //SEG134 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#1 [phi:line::@10->line_ydxd#0] -- register_copy 
+  //SEG135 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#1 [phi:line::@10->line_ydxd#1] -- register_copy 
+  //SEG136 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#1 [phi:line::@10->line_ydxd#2] -- register_copy 
+  //SEG137 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#1 [phi:line::@10->line_ydxd#3] -- register_copy 
+  //SEG138 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#1 [phi:line::@10->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG139 line::@9
+  b9:
+  //SEG140 [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
+    sec
+    sbc $ff
+    sta yd
+  //SEG141 [73] if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b13
+  //SEG142 line::@27
+  //SEG143 [74] (byte) line_xdyi::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#10 line_xdyi::x#1 ] -- zpby1=yby 
+    sty line_xdyi.x
+  //SEG144 [75] (byte) line_xdyi::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 ] -- zpby1=xby 
+    stx line_xdyi.y
+  //SEG145 [76] (byte) line_xdyi::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyi.x1
+  //SEG146 [77] (byte) line_xdyi::xd#1 ← (byte) line::xd#0 [ line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG147 [78] (byte) line_xdyi::yd#1 ← (byte) line::yd#10 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
+  //SEG148 [79] call line_xdyi param-assignment [ ]
+  //SEG149 [116] phi from line::@27 to line_xdyi [phi:line::@27->line_xdyi]
+  //SEG150 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#1 [phi:line::@27->line_xdyi#0] -- register_copy 
+  //SEG151 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#1 [phi:line::@27->line_xdyi#1] -- register_copy 
+  //SEG152 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line::@27->line_xdyi#2] -- register_copy 
+  //SEG153 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#1 [phi:line::@27->line_xdyi#3] -- register_copy 
+  //SEG154 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#1 [phi:line::@27->line_xdyi#4] -- register_copy 
+    jsr line_xdyi
+    jmp breturn
+  //SEG155 line::@13
+  b13:
+  //SEG156 [80] (byte) line_ydxi::y#1 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 ] -- zpby1=xby 
+    stx line_ydxi.y
+  //SEG157 [81] (byte) line_ydxi::x#1 ← (byte) line::x1#0 [ line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 ] -- zpby1=yby 
+    sty line_ydxi.x
+  //SEG158 [82] (byte) line_ydxi::y1#1 ← (byte) line::y0#0 [ line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y1
+  //SEG159 [83] (byte) line_ydxi::yd#1 ← (byte) line::yd#10 [ line::xd#0 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 ]
+    // (byte) line_ydxi::yd#1 = (byte) line::yd#10  // register copy zp ZP_BYTE:4
+  //SEG160 [84] (byte) line_ydxi::xd#1 ← (byte) line::xd#0 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG161 [85] call line_ydxi param-assignment [ ]
+  //SEG162 [86] phi from line::@13 to line_ydxi [phi:line::@13->line_ydxi]
+  //SEG163 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#1 [phi:line::@13->line_ydxi#0] -- register_copy 
+  //SEG164 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#1 [phi:line::@13->line_ydxi#1] -- register_copy 
+  //SEG165 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#1 [phi:line::@13->line_ydxi#2] -- register_copy 
+  //SEG166 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#1 [phi:line::@13->line_ydxi#3] -- register_copy 
+  //SEG167 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#1 [phi:line::@13->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
 }
-//SEG118 plot
+//SEG168 line_ydxi
+line_ydxi: {
+    .label y = 7
+    .label x = 6
+    .label y1 = 5
+    .label yd = 4
+    .label xd = 3
+    .label e = 8
+  //SEG169 [87] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG170 [88] phi from line_ydxi line_ydxi::@2 to line_ydxi::@1 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1]
+  //SEG171 [88] phi (byte) line_ydxi::e#3 = (byte) line_ydxi::e#0 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#0] -- register_copy 
+  //SEG172 [88] phi (byte) line_ydxi::y#3 = (byte) line_ydxi::y#6 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#1] -- register_copy 
+  //SEG173 [88] phi (byte) line_ydxi::x#3 = (byte) line_ydxi::x#5 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#2] -- register_copy 
+  //SEG174 line_ydxi::@1
+  b1:
+  //SEG175 [89] (byte) plot::x#2 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 ] -- xby=zpby1 
+    ldx x
+  //SEG176 [90] (byte) plot::y#2 ← (byte) line_ydxi::y#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 plot::y#2 ] -- yby=zpby1 
+    ldy y
+  //SEG177 [91] call plot param-assignment [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  //SEG178 [101] phi from line_ydxi::@1 to plot [phi:line_ydxi::@1->plot]
+  //SEG179 [101] phi (byte) plot::y#4 = (byte) plot::y#2 [phi:line_ydxi::@1->plot#0] -- register_copy 
+  //SEG180 [101] phi (byte) plot::x#4 = (byte) plot::x#2 [phi:line_ydxi::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG181 line_ydxi::@5
+  //SEG182 [92] (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::e#3 line_ydxi::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG183 [93] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG184 [94] if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2
+  //SEG185 line_ydxi::@3
+  //SEG186 [95] (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG187 [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG188 [97] phi from line_ydxi::@3 line_ydxi::@5 to line_ydxi::@2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2]
+  //SEG189 [97] phi (byte) line_ydxi::e#6 = (byte) line_ydxi::e#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#0] -- register_copy 
+  //SEG190 [97] phi (byte) line_ydxi::x#6 = (byte) line_ydxi::x#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#1] -- register_copy 
+  //SEG191 line_ydxi::@2
+  b2:
+  //SEG192 [98] (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 line_ydxi::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG193 [99] if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1
+  //SEG194 line_ydxi::@return
+  //SEG195 [100] return  [ ]
+    rts
+}
+//SEG196 plot
 plot: {
-    .label _5 = 15
-    .label plotter_x = 6
-    .label plotter_y = 13
-    .label plotter = 6
-  //SEG119 [63] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::$0 ] -- aby=cowo1_staridx_xby 
+    .label _5 = 31
+    .label plotter_x = 27
+    .label plotter_y = 29
+    .label plotter = 27
+  //SEG197 [102] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::$0 ] -- aby=cowo1_staridx_xby 
     lda plot_xhi,x
-  //SEG120 [64] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#9 plot::y#9 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG198 [103] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#4 plot::y#4 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_x+1
     lda #<0
     sta plotter_x
-  //SEG121 [65] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
+  //SEG199 [104] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
     lda plot_xlo,x
-  //SEG122 [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG200 [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_x
-  //SEG123 [67] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
+  //SEG201 [106] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
     lda plot_yhi,y
-  //SEG124 [68] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG202 [107] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_y+1
     lda #<0
     sta plotter_y
-  //SEG125 [69] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
+  //SEG203 [108] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
     lda plot_ylo,y
-  //SEG126 [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG204 [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_y
-  //SEG127 [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
+  //SEG205 [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
     lda plotter
     clc
     adc plotter_y
@@ -13060,161 +20362,287 @@ plot: {
     lda plotter+1
     adc plotter_y+1
     sta plotter+1
-  //SEG128 [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
+  //SEG206 [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
     ldy #0
     lda (plotter),y
     sta _5
-  //SEG129 [73] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
+  //SEG207 [112] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
     lda plot_bit,x
-  //SEG130 [74] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
+  //SEG208 [113] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
     ora _5
-  //SEG131 [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
+  //SEG209 [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
     sta (plotter),y
-  //SEG132 plot::@return
-  //SEG133 [76] return  [ ]
+  //SEG210 plot::@return
+  //SEG211 [115] return  [ ]
     rts
 }
-//SEG134 line_xdyi
+//SEG212 line_xdyi
 line_xdyi: {
-    .label x = 3
-    .label y = 4
+    .label x = 12
+    .label y = 13
     .label x1 = 11
     .label xd = 10
-    .label yd = 12
-    .label e = 5
-  //SEG135 [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
+    .label yd = 9
+    .label e = 14
+  //SEG213 [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
     lda yd
     lsr
     sta e
-  //SEG136 [78] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
-  //SEG137 [78] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
-  //SEG138 [78] phi (byte) line_xdyi::y#2 = (byte) line_xdyi::y#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
-  //SEG139 [78] phi (byte) line_xdyi::x#2 = (byte) line_xdyi::x#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
-  //SEG140 line_xdyi::@1
+  //SEG214 [118] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
+  //SEG215 [118] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
+  //SEG216 [118] phi (byte) line_xdyi::y#3 = (byte) line_xdyi::y#5 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
+  //SEG217 [118] phi (byte) line_xdyi::x#3 = (byte) line_xdyi::x#6 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
+  //SEG218 line_xdyi::@1
   b1:
-  //SEG141 [79] (byte) plot::x#8 ← (byte) line_xdyi::x#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- xby=zpby1 
+  //SEG219 [119] (byte) plot::x#0 ← (byte) line_xdyi::x#3 [ plot::x#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- xby=zpby1 
     ldx x
-  //SEG142 [80] (byte) plot::y#8 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 plot::y#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- yby=zpby1 
+  //SEG220 [120] (byte) plot::y#0 ← (byte) line_xdyi::y#3 [ plot::x#0 plot::y#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- yby=zpby1 
     ldy y
-  //SEG143 [81] call plot param-assignment [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  //SEG144 [62] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
-  //SEG145 [62] phi (byte) plot::y#9 = (byte) plot::y#8 [phi:line_xdyi::@1->plot#0] -- register_copy 
-  //SEG146 [62] phi (byte) plot::x#9 = (byte) plot::x#8 [phi:line_xdyi::@1->plot#1] -- register_copy 
+  //SEG221 [121] call plot param-assignment [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  //SEG222 [101] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
+  //SEG223 [101] phi (byte) plot::y#4 = (byte) plot::y#0 [phi:line_xdyi::@1->plot#0] -- register_copy 
+  //SEG224 [101] phi (byte) plot::x#4 = (byte) plot::x#0 [phi:line_xdyi::@1->plot#1] -- register_copy 
     jsr plot
-  //SEG147 line_xdyi::@5
-  //SEG148 [82] (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::e#3 line_xdyi::x#1 ] -- zpby1=zpby1_plus_1 
+  //SEG225 line_xdyi::@5
+  //SEG226 [122] (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::e#3 line_xdyi::x#2 ] -- zpby1=zpby1_plus_1 
     inc x
-  //SEG149 [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+  //SEG227 [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
     lda e
     clc
     adc yd
     sta e
-  //SEG150 [84] if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+  //SEG228 [124] if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
     lda xd
     cmp e
     bcs b2
-  //SEG151 line_xdyi::@3
-  //SEG152 [85] (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#1 ] -- zpby1=zpby1_plus_1 
+  //SEG229 line_xdyi::@3
+  //SEG230 [125] (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#2 ] -- zpby1=zpby1_plus_1 
     inc y
-  //SEG153 [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+  //SEG231 [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
     lda e
     sec
     sbc xd
     sta e
-  //SEG154 [87] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
-  //SEG155 [87] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
-  //SEG156 [87] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
-  //SEG157 line_xdyi::@2
+  //SEG232 [127] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
+  //SEG233 [127] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
+  //SEG234 [127] phi (byte) line_xdyi::y#6 = (byte) line_xdyi::y#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
+  //SEG235 line_xdyi::@2
   b2:
-  //SEG158 [88] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
+  //SEG236 [128] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
     lda x1
     clc
     adc #1
-  //SEG159 [89] if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
+  //SEG237 [129] if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
     cmp x
     bcs b1
-  //SEG160 line_xdyi::@return
-  //SEG161 [90] return  [ ]
+  //SEG238 line_xdyi::@return
+  //SEG239 [130] return  [ ]
     rts
 }
-//SEG162 init_plot_tables
+//SEG240 line_ydxd
+line_ydxd: {
+    .label y = 19
+    .label x = 18
+    .label y1 = 17
+    .label yd = 16
+    .label xd = 15
+    .label e = 20
+  //SEG241 [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG242 [133] phi from line_ydxd line_ydxd::@2 to line_ydxd::@1 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1]
+  //SEG243 [133] phi (byte) line_ydxd::e#3 = (byte) line_ydxd::e#0 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#0] -- register_copy 
+  //SEG244 [133] phi (byte) line_ydxd::y#3 = (byte) line_ydxd::y#6 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#1] -- register_copy 
+  //SEG245 [133] phi (byte) line_ydxd::x#3 = (byte) line_ydxd::x#5 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#2] -- register_copy 
+  //SEG246 line_ydxd::@1
+  b1:
+  //SEG247 [134] (byte) plot::x#3 ← (byte) line_ydxd::x#3 [ plot::x#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG248 [135] (byte) plot::y#3 ← (byte) line_ydxd::y#3 [ plot::x#3 plot::y#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG249 [136] call plot param-assignment [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  //SEG250 [101] phi from line_ydxd::@1 to plot [phi:line_ydxd::@1->plot]
+  //SEG251 [101] phi (byte) plot::y#4 = (byte) plot::y#3 [phi:line_ydxd::@1->plot#0] -- register_copy 
+  //SEG252 [101] phi (byte) plot::x#4 = (byte) plot::x#3 [phi:line_ydxd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG253 line_ydxd::@5
+  //SEG254 [137] (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::e#3 line_ydxd::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG255 [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG256 [139] if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2
+  //SEG257 line_ydxd::@3
+  //SEG258 [140] (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#2 ] -- zpby1=zpby1_minus_1 
+    dec x
+  //SEG259 [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG260 [142] phi from line_ydxd::@3 line_ydxd::@5 to line_ydxd::@2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2]
+  //SEG261 [142] phi (byte) line_ydxd::e#6 = (byte) line_ydxd::e#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#0] -- register_copy 
+  //SEG262 [142] phi (byte) line_ydxd::x#6 = (byte) line_ydxd::x#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#1] -- register_copy 
+  //SEG263 line_ydxd::@2
+  b2:
+  //SEG264 [143] (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 line_ydxd::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG265 [144] if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1
+  //SEG266 line_ydxd::@return
+  //SEG267 [145] return  [ ]
+    rts
+}
+//SEG268 line_xdyd
+line_xdyd: {
+    .label x = 24
+    .label y = 25
+    .label x1 = 23
+    .label xd = 22
+    .label yd = 21
+    .label e = 26
+  //SEG269 [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda yd
+    lsr
+    sta e
+  //SEG270 [148] phi from line_xdyd line_xdyd::@2 to line_xdyd::@1 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1]
+  //SEG271 [148] phi (byte) line_xdyd::e#3 = (byte) line_xdyd::e#0 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#0] -- register_copy 
+  //SEG272 [148] phi (byte) line_xdyd::y#3 = (byte) line_xdyd::y#5 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#1] -- register_copy 
+  //SEG273 [148] phi (byte) line_xdyd::x#3 = (byte) line_xdyd::x#6 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#2] -- register_copy 
+  //SEG274 line_xdyd::@1
+  b1:
+  //SEG275 [149] (byte) plot::x#1 ← (byte) line_xdyd::x#3 [ plot::x#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG276 [150] (byte) plot::y#1 ← (byte) line_xdyd::y#3 [ plot::x#1 plot::y#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG277 [151] call plot param-assignment [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  //SEG278 [101] phi from line_xdyd::@1 to plot [phi:line_xdyd::@1->plot]
+  //SEG279 [101] phi (byte) plot::y#4 = (byte) plot::y#1 [phi:line_xdyd::@1->plot#0] -- register_copy 
+  //SEG280 [101] phi (byte) plot::x#4 = (byte) plot::x#1 [phi:line_xdyd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG281 line_xdyd::@5
+  //SEG282 [152] (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::e#3 line_xdyd::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG283 [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc yd
+    sta e
+  //SEG284 [154] if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda xd
+    cmp e
+    bcs b2
+  //SEG285 line_xdyd::@3
+  //SEG286 [155] (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#2 ] -- zpby1=zpby1_minus_1 
+    dec y
+  //SEG287 [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc xd
+    sta e
+  //SEG288 [157] phi from line_xdyd::@3 line_xdyd::@5 to line_xdyd::@2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2]
+  //SEG289 [157] phi (byte) line_xdyd::e#6 = (byte) line_xdyd::e#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#0] -- register_copy 
+  //SEG290 [157] phi (byte) line_xdyd::y#6 = (byte) line_xdyd::y#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#1] -- register_copy 
+  //SEG291 line_xdyd::@2
+  b2:
+  //SEG292 [158] (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 line_xdyd::$8 ] -- aby=zpby1_plus_1 
+    lda x1
+    clc
+    adc #1
+  //SEG293 [159] if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp x
+    bcs b1
+  //SEG294 line_xdyd::@return
+  //SEG295 [160] return  [ ]
+    rts
+}
+//SEG296 init_plot_tables
 init_plot_tables: {
     .label _6 = 2
-    .label yoffs = 6
-  //SEG163 [92] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
-  //SEG164 [92] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
+    .label yoffs = 27
+  //SEG297 [162] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
+  //SEG298 [162] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
     ldy #$80
-  //SEG165 [92] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
+  //SEG299 [162] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
     ldx #0
     jmp b1
-  //SEG166 [92] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
-  //SEG167 [92] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
-  //SEG168 [92] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
-  //SEG169 init_plot_tables::@1
+  //SEG300 [162] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
+  //SEG301 [162] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
+  //SEG302 [162] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
+  //SEG303 init_plot_tables::@1
   b1:
-  //SEG170 [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
+  //SEG304 [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
     txa
     and #$f8
-  //SEG171 [94] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
+  //SEG305 [164] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
     sta plot_xlo,x
-  //SEG172 [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
+  //SEG306 [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
     lda #>BITMAP
     sta plot_xhi,x
-  //SEG173 [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
+  //SEG307 [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
     tya
     sta plot_bit,x
-  //SEG174 [97] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
+  //SEG308 [167] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
     tya
     lsr
     tay
-  //SEG175 [98] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
+  //SEG309 [168] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
     cpy #0
     bne b10
-  //SEG176 [99] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
-  //SEG177 [99] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
+  //SEG310 [169] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
+  //SEG311 [169] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
     ldy #$80
-  //SEG178 init_plot_tables::@2
+  //SEG312 init_plot_tables::@2
   b2:
-  //SEG179 [100] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
+  //SEG313 [170] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
     inx
-  //SEG180 [101] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
+  //SEG314 [171] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b1
-  //SEG181 [102] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
-  //SEG182 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
+  //SEG315 [172] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
+  //SEG316 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
     lda #0
     sta yoffs
     sta yoffs+1
-  //SEG183 [102] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
+  //SEG317 [172] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
     ldx #0
     jmp b3
-  //SEG184 [102] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
-  //SEG185 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
-  //SEG186 [102] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
-  //SEG187 init_plot_tables::@3
+  //SEG318 [172] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
+  //SEG319 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
+  //SEG320 [172] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
+  //SEG321 init_plot_tables::@3
   b3:
-  //SEG188 [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
+  //SEG322 [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
     txa
     and #7
     sta _6
-  //SEG189 [104] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
+  //SEG323 [174] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
     lda yoffs
-  //SEG190 [105] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
+  //SEG324 [175] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
     ora _6
-  //SEG191 [106] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG325 [176] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_ylo,x
-  //SEG192 [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
+  //SEG326 [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
     lda yoffs+1
-  //SEG193 [108] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG327 [178] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_yhi,x
-  //SEG194 [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
+  //SEG328 [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
     txa
     and #7
-  //SEG195 [110] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
+  //SEG329 [180] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
     cmp #7
     bne b4
-  //SEG196 init_plot_tables::@7
-  //SEG197 [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
+  //SEG330 init_plot_tables::@7
+  //SEG331 [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
     lda yoffs
     clc
     adc #<$140
@@ -13222,84 +20650,84 @@ init_plot_tables: {
     lda yoffs+1
     adc #>$140
     sta yoffs+1
-  //SEG198 [112] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
-  //SEG199 [112] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
-  //SEG200 init_plot_tables::@4
+  //SEG332 [182] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
+  //SEG333 [182] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
+  //SEG334 init_plot_tables::@4
   b4:
-  //SEG201 [113] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
+  //SEG335 [183] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
     inx
-  //SEG202 [114] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
+  //SEG336 [184] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b3
-  //SEG203 init_plot_tables::@return
-  //SEG204 [115] return  [ ]
+  //SEG337 init_plot_tables::@return
+  //SEG338 [185] return  [ ]
     rts
-  //SEG205 init_plot_tables::@10
+  //SEG339 init_plot_tables::@10
   b10:
-  //SEG206 [99] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
-  //SEG207 [99] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
+  //SEG340 [169] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
+  //SEG341 [169] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
     jmp b2
 }
-//SEG208 init_screen
+//SEG342 init_screen
 init_screen: {
-    .label b = 6
-    .label c = 6
-  //SEG209 [117] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
-  //SEG210 [117] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
+    .label b = 27
+    .label c = 27
+  //SEG343 [187] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
+  //SEG344 [187] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
     lda #<BITMAP
     sta b
     lda #>BITMAP
     sta b+1
     jmp b1
-  //SEG211 [117] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
-  //SEG212 [117] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
-  //SEG213 init_screen::@1
+  //SEG345 [187] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
+  //SEG346 [187] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
+  //SEG347 init_screen::@1
   b1:
-  //SEG214 [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
+  //SEG348 [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #0
     sta (b),y
-  //SEG215 [119] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG349 [189] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
     inc b
     bne !+
     inc b+1
   !:
-  //SEG216 [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG350 [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda b+1
     cmp #>BITMAP+$2000
     bne b1
     lda b
     cmp #<BITMAP+$2000
     bne b1
-  //SEG217 [121] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
-  //SEG218 [121] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
+  //SEG351 [191] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
+  //SEG352 [191] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
     lda #<SCREEN
     sta c
     lda #>SCREEN
     sta c+1
     jmp b2
-  //SEG219 [121] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
-  //SEG220 [121] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
-  //SEG221 init_screen::@2
+  //SEG353 [191] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
+  //SEG354 [191] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
+  //SEG355 init_screen::@2
   b2:
-  //SEG222 [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
+  //SEG356 [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #$14
     sta (c),y
-  //SEG223 [123] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG357 [193] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
     inc c
     bne !+
     inc c+1
   !:
-  //SEG224 [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG358 [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda c+1
     cmp #>SCREEN+$400
     bne b2
     lda c
     cmp #<SCREEN+$400
     bne b2
-  //SEG225 init_screen::@return
-  //SEG226 [125] return  [ ]
+  //SEG359 init_screen::@return
+  //SEG360 [195] return  [ ]
     rts
 }
 
@@ -13336,7 +20764,7 @@ ASSEMBLER
   lines_x: .byte $3c, $50, $6e, $50, $3c, $28, $a, $28, $3c
   lines_y: .byte $a, $28, $3c, $50, $6e, $50, $3c, $28, $a
 //SEG1 @begin
-//SEG2 @7
+//SEG2 @10
 //SEG3 [0] call main param-assignment [ ]
   jsr main
 //SEG4 @end
@@ -13354,11 +20782,11 @@ main: {
     lda #$18
     sta D018
   //SEG10 [5] call init_screen param-assignment [ ]
-  //SEG11 [116] phi from main to init_screen [phi:main->init_screen]
+  //SEG11 [186] phi from main to init_screen [phi:main->init_screen]
     jsr init_screen
   //SEG12 main::@3
   //SEG13 [6] call init_plot_tables param-assignment [ ]
-  //SEG14 [91] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
+  //SEG14 [161] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
     jsr init_plot_tables
   //SEG15 main::@1
   b1:
@@ -13403,13 +20831,13 @@ lines: {
     tax
   //SEG32 [16] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] -- zpby1=yby 
     sty line.x0
-  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- zpby1=zpby2 
-    lda _2
-    sta line.x1
-  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- yby=zpby1 
-    ldy _3
-  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1=xby 
-    stx line.y1
+  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- yby=zpby1 
+    ldy _2
+  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- zpby1=zpby2 
+    lda _3
+    sta line.y0
+  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
+    // (byte) line::y1#0 = (byte~) lines::$5  // register copy reg byte x
   //SEG36 [20] call line param-assignment [ lines::l#2 ]
     jsr line
   //SEG37 lines::@3
@@ -13426,175 +20854,360 @@ lines: {
 //SEG42 line
 line: {
     .label x0 = 5
-    .label x1 = 8
-    .label y1 = 9
-    .label xd = 10
-  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_zpby2_then_la1 
-    lda x0
-    cmp x1
-    bcs b1
-  //SEG44 line::@9
-  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=zpby2_minus_zpby3 
-    lda x1
+    .label y0 = 3
+    .label xd = 8
+    .label yd = 4
+  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_yby_then_la1 
+    cpy x0
+    bcc b1
+  //SEG44 line::@15
+  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=yby_minus_zpby2 
+    tya
     sec
     sbc x0
     sta xd
-  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b2
-  //SEG47 line::@10
-  //SEG48 [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby=zpby1_minus_yby 
-    sty $ff
-    lda y1
+  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b2
+  //SEG47 line::@16
+  //SEG48 [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1=xby_minus_zpby2 
+    txa
     sec
-    sbc $ff
-    tax
-  //SEG49 [28] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby_ge_zpby1_then_la1 
-    cpx xd
+    sbc y0
+    sta yd
+  //SEG49 [28] if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
     bcs b3
-  //SEG50 line::@11
-  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyi::x#0 ] -- zpby1=zpby2 
+  //SEG50 line::@17
+  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#1 line_xdyi::x#0 ] -- zpby1=zpby2 
     lda x0
     sta line_xdyi.x
-  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=yby 
-    sty line_xdyi.y
-  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=zpby2 
-    lda x1
-    sta line_xdyi.x1
-  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
-    // (byte) line_xdyi::xd#0 = (byte) line::xd#1  // register copy zp ZP_BYTE:10
-  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=xby 
-    stx line_xdyi.yd
+  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyi.y
+  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=yby 
+    sty line_xdyi.x1
+  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
   //SEG56 [34] call line_xdyi param-assignment [ ]
+  //SEG57 [116] phi from line::@17 to line_xdyi [phi:line::@17->line_xdyi]
+  //SEG58 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#0 [phi:line::@17->line_xdyi#0] -- register_copy 
+  //SEG59 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#0 [phi:line::@17->line_xdyi#1] -- register_copy 
+  //SEG60 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#0 [phi:line::@17->line_xdyi#2] -- register_copy 
+  //SEG61 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#0 [phi:line::@17->line_xdyi#3] -- register_copy 
+  //SEG62 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#0 [phi:line::@17->line_xdyi#4] -- register_copy 
     jsr line_xdyi
-  //SEG57 line::@return
+  //SEG63 line::@return
   breturn:
-  //SEG58 [35] return  [ ]
+  //SEG64 [35] return  [ ]
     rts
-  //SEG59 line::@3
+  //SEG65 line::@3
   b3:
-  //SEG60 [36] (byte) plot::x#2 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#2 ] -- xby=zpby1 
-    ldx x0
-  //SEG61 [37] (byte) plot::y#2 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#2 plot::y#2 ]
-    // (byte) plot::y#2 = (byte) line::y0#0  // register copy reg byte y
-  //SEG62 [38] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG63 [62] phi from line::@3 to plot [phi:line::@3->plot]
-  //SEG64 [62] phi (byte) plot::y#9 = (byte) plot::y#2 [phi:line::@3->plot#0] -- register_copy 
-  //SEG65 [62] phi (byte) plot::x#9 = (byte) plot::x#2 [phi:line::@3->plot#1] -- register_copy 
-    jsr plot
-  //SEG66 line::@19
-  //SEG67 [39] (byte) plot::x#3 ← (byte) line::x1#0 [ line::y1#0 plot::x#3 ] -- xby=zpby1 
-    ldx x1
-  //SEG68 [40] (byte) plot::y#3 ← (byte) line::y1#0 [ plot::x#3 plot::y#3 ] -- yby=zpby1 
-    ldy y1
-  //SEG69 [41] call plot param-assignment [ ]
-  //SEG70 [62] phi from line::@19 to plot [phi:line::@19->plot]
-  //SEG71 [62] phi (byte) plot::y#9 = (byte) plot::y#3 [phi:line::@19->plot#0] -- register_copy 
-  //SEG72 [62] phi (byte) plot::x#9 = (byte) plot::x#3 [phi:line::@19->plot#1] -- register_copy 
-    jsr plot
+  //SEG66 [36] (byte) line_ydxi::y#0 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y
+  //SEG67 [37] (byte) line_ydxi::x#0 ← (byte) line::x0#0 [ line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxi.x
+  //SEG68 [38] (byte) line_ydxi::y1#0 ← (byte) line::y1#0 [ line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 ] -- zpby1=xby 
+    stx line_ydxi.y1
+  //SEG69 [39] (byte) line_ydxi::yd#0 ← (byte) line::yd#1 [ line::xd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 ]
+    // (byte) line_ydxi::yd#0 = (byte) line::yd#1  // register copy zp ZP_BYTE:4
+  //SEG70 [40] (byte) line_ydxi::xd#0 ← (byte) line::xd#1 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG71 [41] call line_ydxi param-assignment [ ]
+  //SEG72 [86] phi from line::@3 to line_ydxi [phi:line::@3->line_ydxi]
+  //SEG73 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#0 [phi:line::@3->line_ydxi#0] -- register_copy 
+  //SEG74 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#0 [phi:line::@3->line_ydxi#1] -- register_copy 
+  //SEG75 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#0 [phi:line::@3->line_ydxi#2] -- register_copy 
+  //SEG76 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#0 [phi:line::@3->line_ydxi#3] -- register_copy 
+  //SEG77 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#0 [phi:line::@3->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
-  //SEG73 line::@2
+  //SEG78 line::@2
   b2:
-  //SEG74 [42] (byte) plot::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#0 ] -- xby=zpby1 
-    ldx x0
-  //SEG75 [43] (byte) plot::y#0 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#0 plot::y#0 ]
-    // (byte) plot::y#0 = (byte) line::y0#0  // register copy reg byte y
-  //SEG76 [44] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG77 [62] phi from line::@2 to plot [phi:line::@2->plot]
-  //SEG78 [62] phi (byte) plot::y#9 = (byte) plot::y#0 [phi:line::@2->plot#0] -- register_copy 
-  //SEG79 [62] phi (byte) plot::x#9 = (byte) plot::x#0 [phi:line::@2->plot#1] -- register_copy 
-    jsr plot
-  //SEG80 line::@17
-  //SEG81 [45] (byte) plot::x#1 ← (byte) line::x1#0 [ line::y1#0 plot::x#1 ] -- xby=zpby1 
-    ldx x1
-  //SEG82 [46] (byte) plot::y#1 ← (byte) line::y1#0 [ plot::x#1 plot::y#1 ] -- yby=zpby1 
-    ldy y1
-  //SEG83 [47] call plot param-assignment [ ]
-  //SEG84 [62] phi from line::@17 to plot [phi:line::@17->plot]
-  //SEG85 [62] phi (byte) plot::y#9 = (byte) plot::y#1 [phi:line::@17->plot#0] -- register_copy 
-  //SEG86 [62] phi (byte) plot::x#9 = (byte) plot::x#1 [phi:line::@17->plot#1] -- register_copy 
-    jsr plot
-    jmp breturn
-  //SEG87 line::@1
-  b1:
-  //SEG88 [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- aby=zpby1_minus_zpby2 
-    lda x1
+  //SEG79 [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
     sec
-    sbc x0
-  //SEG89 [49] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b7
-  //SEG90 line::@15
-  //SEG91 [50] (byte) plot::x#6 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#6 ] -- xby=zpby1 
-    ldx x0
-  //SEG92 [51] (byte) plot::y#6 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#6 plot::y#6 ]
-    // (byte) plot::y#6 = (byte) line::y0#0  // register copy reg byte y
-  //SEG93 [52] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG94 [62] phi from line::@15 to plot [phi:line::@15->plot]
-  //SEG95 [62] phi (byte) plot::y#9 = (byte) plot::y#6 [phi:line::@15->plot#0] -- register_copy 
-  //SEG96 [62] phi (byte) plot::x#9 = (byte) plot::x#6 [phi:line::@15->plot#1] -- register_copy 
-    jsr plot
-  //SEG97 line::@24
-  //SEG98 [53] (byte) plot::x#7 ← (byte) line::x1#0 [ line::y1#0 plot::x#7 ] -- xby=zpby1 
-    ldx x1
-  //SEG99 [54] (byte) plot::y#7 ← (byte) line::y1#0 [ plot::x#7 plot::y#7 ] -- yby=zpby1 
-    ldy y1
-  //SEG100 [55] call plot param-assignment [ ]
-  //SEG101 [62] phi from line::@24 to plot [phi:line::@24->plot]
-  //SEG102 [62] phi (byte) plot::y#9 = (byte) plot::y#7 [phi:line::@24->plot#0] -- register_copy 
-  //SEG103 [62] phi (byte) plot::x#9 = (byte) plot::x#7 [phi:line::@24->plot#1] -- register_copy 
-    jsr plot
+    sbc $ff
+    sta yd
+  //SEG80 [43] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b6
+  //SEG81 line::@20
+  //SEG82 [44] (byte) line_xdyd::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyd::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x
+  //SEG83 [45] (byte) line_xdyd::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyd.y
+  //SEG84 [46] (byte) line_xdyd::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 ] -- zpby1=yby 
+    sty line_xdyd.x1
+  //SEG85 [47] (byte) line_xdyd::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG86 [48] (byte) line_xdyd::yd#0 ← (byte) line::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG87 [49] call line_xdyd param-assignment [ ]
+  //SEG88 [146] phi from line::@20 to line_xdyd [phi:line::@20->line_xdyd]
+  //SEG89 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#0 [phi:line::@20->line_xdyd#0] -- register_copy 
+  //SEG90 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#0 [phi:line::@20->line_xdyd#1] -- register_copy 
+  //SEG91 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#0 [phi:line::@20->line_xdyd#2] -- register_copy 
+  //SEG92 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#0 [phi:line::@20->line_xdyd#3] -- register_copy 
+  //SEG93 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#0 [phi:line::@20->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
     jmp breturn
-  //SEG104 line::@7
-  b7:
-  //SEG105 [56] (byte) plot::x#4 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#4 ] -- xby=zpby1 
-    ldx x0
-  //SEG106 [57] (byte) plot::y#4 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#4 plot::y#4 ]
-    // (byte) plot::y#4 = (byte) line::y0#0  // register copy reg byte y
-  //SEG107 [58] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG108 [62] phi from line::@7 to plot [phi:line::@7->plot]
-  //SEG109 [62] phi (byte) plot::y#9 = (byte) plot::y#4 [phi:line::@7->plot#0] -- register_copy 
-  //SEG110 [62] phi (byte) plot::x#9 = (byte) plot::x#4 [phi:line::@7->plot#1] -- register_copy 
-    jsr plot
-  //SEG111 line::@22
-  //SEG112 [59] (byte) plot::x#5 ← (byte) line::x1#0 [ line::y1#0 plot::x#5 ] -- xby=zpby1 
-    ldx x1
-  //SEG113 [60] (byte) plot::y#5 ← (byte) line::y1#0 [ plot::x#5 plot::y#5 ] -- yby=zpby1 
-    ldy y1
-  //SEG114 [61] call plot param-assignment [ ]
-  //SEG115 [62] phi from line::@22 to plot [phi:line::@22->plot]
-  //SEG116 [62] phi (byte) plot::y#9 = (byte) plot::y#5 [phi:line::@22->plot#0] -- register_copy 
-  //SEG117 [62] phi (byte) plot::x#9 = (byte) plot::x#5 [phi:line::@22->plot#1] -- register_copy 
-    jsr plot
+  //SEG94 line::@6
+  b6:
+  //SEG95 [50] (byte) line_ydxd::y#0 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 ] -- zpby1=xby 
+    stx line_ydxd.y
+  //SEG96 [51] (byte) line_ydxd::x#0 ← (byte) line::x1#0 [ line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 ] -- zpby1=yby 
+    sty line_ydxd.x
+  //SEG97 [52] (byte) line_ydxd::y1#0 ← (byte) line::y0#0 [ line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y1
+  //SEG98 [53] (byte) line_ydxd::yd#0 ← (byte) line::yd#0 [ line::xd#1 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG99 [54] (byte) line_ydxd::xd#0 ← (byte) line::xd#1 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG100 [55] call line_ydxd param-assignment [ ]
+  //SEG101 [131] phi from line::@6 to line_ydxd [phi:line::@6->line_ydxd]
+  //SEG102 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#0 [phi:line::@6->line_ydxd#0] -- register_copy 
+  //SEG103 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#0 [phi:line::@6->line_ydxd#1] -- register_copy 
+  //SEG104 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#0 [phi:line::@6->line_ydxd#2] -- register_copy 
+  //SEG105 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#0 [phi:line::@6->line_ydxd#3] -- register_copy 
+  //SEG106 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#0 [phi:line::@6->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG107 line::@1
+  b1:
+  //SEG108 [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1=zpby2_minus_yby 
+    sty $ff
+    lda x0
+    sec
+    sbc $ff
+    sta xd
+  //SEG109 [57] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b9
+  //SEG110 line::@23
+  //SEG111 [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1=xby_minus_zpby2 
+    txa
+    sec
+    sbc y0
+    sta yd
+  //SEG112 [59] if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b10
+  //SEG113 line::@24
+  //SEG114 [60] (byte) line_xdyd::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_xdyd::x#1 ] -- zpby1=yby 
+    sty line_xdyd.x
+  //SEG115 [61] (byte) line_xdyd::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 ] -- zpby1=xby 
+    stx line_xdyd.y
+  //SEG116 [62] (byte) line_xdyd::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x1
+  //SEG117 [63] (byte) line_xdyd::xd#1 ← (byte) line::xd#0 [ line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG118 [64] (byte) line_xdyd::yd#1 ← (byte) line::yd#3 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG119 [65] call line_xdyd param-assignment [ ]
+  //SEG120 [146] phi from line::@24 to line_xdyd [phi:line::@24->line_xdyd]
+  //SEG121 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#1 [phi:line::@24->line_xdyd#0] -- register_copy 
+  //SEG122 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#1 [phi:line::@24->line_xdyd#1] -- register_copy 
+  //SEG123 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#1 [phi:line::@24->line_xdyd#2] -- register_copy 
+  //SEG124 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#1 [phi:line::@24->line_xdyd#3] -- register_copy 
+  //SEG125 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#1 [phi:line::@24->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
+    jmp breturn
+  //SEG126 line::@10
+  b10:
+  //SEG127 [66] (byte) line_ydxd::y#1 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y
+  //SEG128 [67] (byte) line_ydxd::x#1 ← (byte) line::x0#0 [ line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxd.x
+  //SEG129 [68] (byte) line_ydxd::y1#1 ← (byte) line::y1#0 [ line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 ] -- zpby1=xby 
+    stx line_ydxd.y1
+  //SEG130 [69] (byte) line_ydxd::yd#1 ← (byte) line::yd#3 [ line::xd#0 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG131 [70] (byte) line_ydxd::xd#1 ← (byte) line::xd#0 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG132 [71] call line_ydxd param-assignment [ ]
+  //SEG133 [131] phi from line::@10 to line_ydxd [phi:line::@10->line_ydxd]
+  //SEG134 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#1 [phi:line::@10->line_ydxd#0] -- register_copy 
+  //SEG135 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#1 [phi:line::@10->line_ydxd#1] -- register_copy 
+  //SEG136 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#1 [phi:line::@10->line_ydxd#2] -- register_copy 
+  //SEG137 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#1 [phi:line::@10->line_ydxd#3] -- register_copy 
+  //SEG138 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#1 [phi:line::@10->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG139 line::@9
+  b9:
+  //SEG140 [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
+    sec
+    sbc $ff
+    sta yd
+  //SEG141 [73] if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b13
+  //SEG142 line::@27
+  //SEG143 [74] (byte) line_xdyi::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#10 line_xdyi::x#1 ] -- zpby1=yby 
+    sty line_xdyi.x
+  //SEG144 [75] (byte) line_xdyi::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 ] -- zpby1=xby 
+    stx line_xdyi.y
+  //SEG145 [76] (byte) line_xdyi::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyi.x1
+  //SEG146 [77] (byte) line_xdyi::xd#1 ← (byte) line::xd#0 [ line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG147 [78] (byte) line_xdyi::yd#1 ← (byte) line::yd#10 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
+  //SEG148 [79] call line_xdyi param-assignment [ ]
+  //SEG149 [116] phi from line::@27 to line_xdyi [phi:line::@27->line_xdyi]
+  //SEG150 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#1 [phi:line::@27->line_xdyi#0] -- register_copy 
+  //SEG151 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#1 [phi:line::@27->line_xdyi#1] -- register_copy 
+  //SEG152 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line::@27->line_xdyi#2] -- register_copy 
+  //SEG153 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#1 [phi:line::@27->line_xdyi#3] -- register_copy 
+  //SEG154 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#1 [phi:line::@27->line_xdyi#4] -- register_copy 
+    jsr line_xdyi
+    jmp breturn
+  //SEG155 line::@13
+  b13:
+  //SEG156 [80] (byte) line_ydxi::y#1 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 ] -- zpby1=xby 
+    stx line_ydxi.y
+  //SEG157 [81] (byte) line_ydxi::x#1 ← (byte) line::x1#0 [ line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 ] -- zpby1=yby 
+    sty line_ydxi.x
+  //SEG158 [82] (byte) line_ydxi::y1#1 ← (byte) line::y0#0 [ line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y1
+  //SEG159 [83] (byte) line_ydxi::yd#1 ← (byte) line::yd#10 [ line::xd#0 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 ]
+    // (byte) line_ydxi::yd#1 = (byte) line::yd#10  // register copy zp ZP_BYTE:4
+  //SEG160 [84] (byte) line_ydxi::xd#1 ← (byte) line::xd#0 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG161 [85] call line_ydxi param-assignment [ ]
+  //SEG162 [86] phi from line::@13 to line_ydxi [phi:line::@13->line_ydxi]
+  //SEG163 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#1 [phi:line::@13->line_ydxi#0] -- register_copy 
+  //SEG164 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#1 [phi:line::@13->line_ydxi#1] -- register_copy 
+  //SEG165 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#1 [phi:line::@13->line_ydxi#2] -- register_copy 
+  //SEG166 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#1 [phi:line::@13->line_ydxi#3] -- register_copy 
+  //SEG167 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#1 [phi:line::@13->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
 }
-//SEG118 plot
+//SEG168 line_ydxi
+line_ydxi: {
+    .label y = 7
+    .label x = 6
+    .label y1 = 5
+    .label yd = 4
+    .label xd = 3
+    .label e = 8
+  //SEG169 [87] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG170 [88] phi from line_ydxi line_ydxi::@2 to line_ydxi::@1 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1]
+  //SEG171 [88] phi (byte) line_ydxi::e#3 = (byte) line_ydxi::e#0 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#0] -- register_copy 
+  //SEG172 [88] phi (byte) line_ydxi::y#3 = (byte) line_ydxi::y#6 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#1] -- register_copy 
+  //SEG173 [88] phi (byte) line_ydxi::x#3 = (byte) line_ydxi::x#5 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#2] -- register_copy 
+  //SEG174 line_ydxi::@1
+  b1:
+  //SEG175 [89] (byte) plot::x#2 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 ] -- xby=zpby1 
+    ldx x
+  //SEG176 [90] (byte) plot::y#2 ← (byte) line_ydxi::y#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 plot::y#2 ] -- yby=zpby1 
+    ldy y
+  //SEG177 [91] call plot param-assignment [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  //SEG178 [101] phi from line_ydxi::@1 to plot [phi:line_ydxi::@1->plot]
+  //SEG179 [101] phi (byte) plot::y#4 = (byte) plot::y#2 [phi:line_ydxi::@1->plot#0] -- register_copy 
+  //SEG180 [101] phi (byte) plot::x#4 = (byte) plot::x#2 [phi:line_ydxi::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG181 line_ydxi::@5
+  //SEG182 [92] (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::e#3 line_ydxi::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG183 [93] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG184 [94] if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2
+  //SEG185 line_ydxi::@3
+  //SEG186 [95] (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG187 [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG188 [97] phi from line_ydxi::@3 line_ydxi::@5 to line_ydxi::@2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2]
+  //SEG189 [97] phi (byte) line_ydxi::e#6 = (byte) line_ydxi::e#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#0] -- register_copy 
+  //SEG190 [97] phi (byte) line_ydxi::x#6 = (byte) line_ydxi::x#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#1] -- register_copy 
+  //SEG191 line_ydxi::@2
+  b2:
+  //SEG192 [98] (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 line_ydxi::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG193 [99] if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1
+  //SEG194 line_ydxi::@return
+  //SEG195 [100] return  [ ]
+    rts
+}
+//SEG196 plot
 plot: {
-    .label _5 = 15
-    .label plotter_x = 6
-    .label plotter_y = 13
-    .label plotter = 6
-  //SEG119 [63] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::$0 ] -- aby=cowo1_staridx_xby 
+    .label _5 = 31
+    .label plotter_x = 27
+    .label plotter_y = 29
+    .label plotter = 27
+  //SEG197 [102] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::$0 ] -- aby=cowo1_staridx_xby 
     lda plot_xhi,x
-  //SEG120 [64] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#9 plot::y#9 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG198 [103] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#4 plot::y#4 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_x+1
     lda #<0
     sta plotter_x
-  //SEG121 [65] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
+  //SEG199 [104] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
     lda plot_xlo,x
-  //SEG122 [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG200 [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_x
-  //SEG123 [67] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
+  //SEG201 [106] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
     lda plot_yhi,y
-  //SEG124 [68] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG202 [107] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_y+1
     lda #<0
     sta plotter_y
-  //SEG125 [69] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
+  //SEG203 [108] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
     lda plot_ylo,y
-  //SEG126 [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG204 [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_y
-  //SEG127 [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
+  //SEG205 [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
     lda plotter
     clc
     adc plotter_y
@@ -13602,159 +21215,285 @@ plot: {
     lda plotter+1
     adc plotter_y+1
     sta plotter+1
-  //SEG128 [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
+  //SEG206 [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
     ldy #0
     lda (plotter),y
     sta _5
-  //SEG129 [73] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
+  //SEG207 [112] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
     lda plot_bit,x
-  //SEG130 [74] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
+  //SEG208 [113] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
     ora _5
-  //SEG131 [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
+  //SEG209 [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
     sta (plotter),y
-  //SEG132 plot::@return
-  //SEG133 [76] return  [ ]
+  //SEG210 plot::@return
+  //SEG211 [115] return  [ ]
     rts
 }
-//SEG134 line_xdyi
+//SEG212 line_xdyi
 line_xdyi: {
-    .label x = 3
-    .label y = 4
+    .label x = 12
+    .label y = 13
     .label x1 = 11
     .label xd = 10
-    .label yd = 12
-    .label e = 5
-  //SEG135 [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
+    .label yd = 9
+    .label e = 14
+  //SEG213 [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
     lda yd
     lsr
     sta e
-  //SEG136 [78] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
-  //SEG137 [78] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
-  //SEG138 [78] phi (byte) line_xdyi::y#2 = (byte) line_xdyi::y#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
-  //SEG139 [78] phi (byte) line_xdyi::x#2 = (byte) line_xdyi::x#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
-  //SEG140 line_xdyi::@1
+  //SEG214 [118] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
+  //SEG215 [118] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
+  //SEG216 [118] phi (byte) line_xdyi::y#3 = (byte) line_xdyi::y#5 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
+  //SEG217 [118] phi (byte) line_xdyi::x#3 = (byte) line_xdyi::x#6 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
+  //SEG218 line_xdyi::@1
   b1:
-  //SEG141 [79] (byte) plot::x#8 ← (byte) line_xdyi::x#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- xby=zpby1 
+  //SEG219 [119] (byte) plot::x#0 ← (byte) line_xdyi::x#3 [ plot::x#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- xby=zpby1 
     ldx x
-  //SEG142 [80] (byte) plot::y#8 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 plot::y#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- yby=zpby1 
+  //SEG220 [120] (byte) plot::y#0 ← (byte) line_xdyi::y#3 [ plot::x#0 plot::y#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- yby=zpby1 
     ldy y
-  //SEG143 [81] call plot param-assignment [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  //SEG144 [62] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
-  //SEG145 [62] phi (byte) plot::y#9 = (byte) plot::y#8 [phi:line_xdyi::@1->plot#0] -- register_copy 
-  //SEG146 [62] phi (byte) plot::x#9 = (byte) plot::x#8 [phi:line_xdyi::@1->plot#1] -- register_copy 
+  //SEG221 [121] call plot param-assignment [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  //SEG222 [101] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
+  //SEG223 [101] phi (byte) plot::y#4 = (byte) plot::y#0 [phi:line_xdyi::@1->plot#0] -- register_copy 
+  //SEG224 [101] phi (byte) plot::x#4 = (byte) plot::x#0 [phi:line_xdyi::@1->plot#1] -- register_copy 
     jsr plot
-  //SEG147 line_xdyi::@5
-  //SEG148 [82] (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::e#3 line_xdyi::x#1 ] -- zpby1=zpby1_plus_1 
+  //SEG225 line_xdyi::@5
+  //SEG226 [122] (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::e#3 line_xdyi::x#2 ] -- zpby1=zpby1_plus_1 
     inc x
-  //SEG149 [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+  //SEG227 [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
     lda e
     clc
     adc yd
     sta e
-  //SEG150 [84] if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+  //SEG228 [124] if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
     lda xd
     cmp e
     bcs b2
-  //SEG151 line_xdyi::@3
-  //SEG152 [85] (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#1 ] -- zpby1=zpby1_plus_1 
+  //SEG229 line_xdyi::@3
+  //SEG230 [125] (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#2 ] -- zpby1=zpby1_plus_1 
     inc y
-  //SEG153 [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+  //SEG231 [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
     lda e
     sec
     sbc xd
     sta e
-  //SEG154 [87] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
-  //SEG155 [87] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
-  //SEG156 [87] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
-  //SEG157 line_xdyi::@2
+  //SEG232 [127] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
+  //SEG233 [127] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
+  //SEG234 [127] phi (byte) line_xdyi::y#6 = (byte) line_xdyi::y#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
+  //SEG235 line_xdyi::@2
   b2:
-  //SEG158 [88] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
+  //SEG236 [128] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
     lda x1
     clc
     adc #1
-  //SEG159 [89] if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
+  //SEG237 [129] if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
     cmp x
     bcs b1
-  //SEG160 line_xdyi::@return
-  //SEG161 [90] return  [ ]
+  //SEG238 line_xdyi::@return
+  //SEG239 [130] return  [ ]
     rts
 }
-//SEG162 init_plot_tables
+//SEG240 line_ydxd
+line_ydxd: {
+    .label y = 19
+    .label x = 18
+    .label y1 = 17
+    .label yd = 16
+    .label xd = 15
+    .label e = 20
+  //SEG241 [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG242 [133] phi from line_ydxd line_ydxd::@2 to line_ydxd::@1 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1]
+  //SEG243 [133] phi (byte) line_ydxd::e#3 = (byte) line_ydxd::e#0 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#0] -- register_copy 
+  //SEG244 [133] phi (byte) line_ydxd::y#3 = (byte) line_ydxd::y#6 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#1] -- register_copy 
+  //SEG245 [133] phi (byte) line_ydxd::x#3 = (byte) line_ydxd::x#5 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#2] -- register_copy 
+  //SEG246 line_ydxd::@1
+  b1:
+  //SEG247 [134] (byte) plot::x#3 ← (byte) line_ydxd::x#3 [ plot::x#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG248 [135] (byte) plot::y#3 ← (byte) line_ydxd::y#3 [ plot::x#3 plot::y#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG249 [136] call plot param-assignment [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  //SEG250 [101] phi from line_ydxd::@1 to plot [phi:line_ydxd::@1->plot]
+  //SEG251 [101] phi (byte) plot::y#4 = (byte) plot::y#3 [phi:line_ydxd::@1->plot#0] -- register_copy 
+  //SEG252 [101] phi (byte) plot::x#4 = (byte) plot::x#3 [phi:line_ydxd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG253 line_ydxd::@5
+  //SEG254 [137] (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::e#3 line_ydxd::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG255 [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG256 [139] if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2
+  //SEG257 line_ydxd::@3
+  //SEG258 [140] (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#2 ] -- zpby1=zpby1_minus_1 
+    dec x
+  //SEG259 [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG260 [142] phi from line_ydxd::@3 line_ydxd::@5 to line_ydxd::@2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2]
+  //SEG261 [142] phi (byte) line_ydxd::e#6 = (byte) line_ydxd::e#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#0] -- register_copy 
+  //SEG262 [142] phi (byte) line_ydxd::x#6 = (byte) line_ydxd::x#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#1] -- register_copy 
+  //SEG263 line_ydxd::@2
+  b2:
+  //SEG264 [143] (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 line_ydxd::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG265 [144] if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1
+  //SEG266 line_ydxd::@return
+  //SEG267 [145] return  [ ]
+    rts
+}
+//SEG268 line_xdyd
+line_xdyd: {
+    .label x = 24
+    .label y = 25
+    .label x1 = 23
+    .label xd = 22
+    .label yd = 21
+    .label e = 26
+  //SEG269 [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda yd
+    lsr
+    sta e
+  //SEG270 [148] phi from line_xdyd line_xdyd::@2 to line_xdyd::@1 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1]
+  //SEG271 [148] phi (byte) line_xdyd::e#3 = (byte) line_xdyd::e#0 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#0] -- register_copy 
+  //SEG272 [148] phi (byte) line_xdyd::y#3 = (byte) line_xdyd::y#5 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#1] -- register_copy 
+  //SEG273 [148] phi (byte) line_xdyd::x#3 = (byte) line_xdyd::x#6 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#2] -- register_copy 
+  //SEG274 line_xdyd::@1
+  b1:
+  //SEG275 [149] (byte) plot::x#1 ← (byte) line_xdyd::x#3 [ plot::x#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG276 [150] (byte) plot::y#1 ← (byte) line_xdyd::y#3 [ plot::x#1 plot::y#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG277 [151] call plot param-assignment [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  //SEG278 [101] phi from line_xdyd::@1 to plot [phi:line_xdyd::@1->plot]
+  //SEG279 [101] phi (byte) plot::y#4 = (byte) plot::y#1 [phi:line_xdyd::@1->plot#0] -- register_copy 
+  //SEG280 [101] phi (byte) plot::x#4 = (byte) plot::x#1 [phi:line_xdyd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG281 line_xdyd::@5
+  //SEG282 [152] (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::e#3 line_xdyd::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG283 [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc yd
+    sta e
+  //SEG284 [154] if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda xd
+    cmp e
+    bcs b2
+  //SEG285 line_xdyd::@3
+  //SEG286 [155] (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#2 ] -- zpby1=zpby1_minus_1 
+    dec y
+  //SEG287 [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc xd
+    sta e
+  //SEG288 [157] phi from line_xdyd::@3 line_xdyd::@5 to line_xdyd::@2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2]
+  //SEG289 [157] phi (byte) line_xdyd::e#6 = (byte) line_xdyd::e#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#0] -- register_copy 
+  //SEG290 [157] phi (byte) line_xdyd::y#6 = (byte) line_xdyd::y#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#1] -- register_copy 
+  //SEG291 line_xdyd::@2
+  b2:
+  //SEG292 [158] (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 line_xdyd::$8 ] -- aby=zpby1_plus_1 
+    lda x1
+    clc
+    adc #1
+  //SEG293 [159] if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp x
+    bcs b1
+  //SEG294 line_xdyd::@return
+  //SEG295 [160] return  [ ]
+    rts
+}
+//SEG296 init_plot_tables
 init_plot_tables: {
     .label _6 = 2
-    .label yoffs = 6
-  //SEG163 [92] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
-  //SEG164 [92] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
+    .label yoffs = 27
+  //SEG297 [162] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
+  //SEG298 [162] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
     ldy #$80
-  //SEG165 [92] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
+  //SEG299 [162] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
     ldx #0
-  //SEG166 [92] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
-  //SEG167 [92] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
-  //SEG168 [92] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
-  //SEG169 init_plot_tables::@1
+  //SEG300 [162] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
+  //SEG301 [162] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
+  //SEG302 [162] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
+  //SEG303 init_plot_tables::@1
   b1:
-  //SEG170 [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
+  //SEG304 [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
     txa
     and #$f8
-  //SEG171 [94] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
+  //SEG305 [164] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
     sta plot_xlo,x
-  //SEG172 [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
+  //SEG306 [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
     lda #>BITMAP
     sta plot_xhi,x
-  //SEG173 [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
+  //SEG307 [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
     tya
     sta plot_bit,x
-  //SEG174 [97] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
+  //SEG308 [167] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
     tya
     lsr
     tay
-  //SEG175 [98] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
+  //SEG309 [168] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
     cpy #0
     bne b10
-  //SEG176 [99] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
-  //SEG177 [99] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
+  //SEG310 [169] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
+  //SEG311 [169] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
     ldy #$80
-  //SEG178 init_plot_tables::@2
+  //SEG312 init_plot_tables::@2
   b2:
-  //SEG179 [100] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
+  //SEG313 [170] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
     inx
-  //SEG180 [101] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
+  //SEG314 [171] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b1
-  //SEG181 [102] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
-  //SEG182 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
+  //SEG315 [172] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
+  //SEG316 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
     lda #0
     sta yoffs
     sta yoffs+1
-  //SEG183 [102] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
+  //SEG317 [172] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
     ldx #0
-  //SEG184 [102] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
-  //SEG185 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
-  //SEG186 [102] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
-  //SEG187 init_plot_tables::@3
+  //SEG318 [172] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
+  //SEG319 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
+  //SEG320 [172] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
+  //SEG321 init_plot_tables::@3
   b3:
-  //SEG188 [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
+  //SEG322 [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
     txa
     and #7
     sta _6
-  //SEG189 [104] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
+  //SEG323 [174] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
     lda yoffs
-  //SEG190 [105] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
+  //SEG324 [175] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
     ora _6
-  //SEG191 [106] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG325 [176] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_ylo,x
-  //SEG192 [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
+  //SEG326 [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
     lda yoffs+1
-  //SEG193 [108] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG327 [178] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_yhi,x
-  //SEG194 [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
+  //SEG328 [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
     txa
     and #7
-  //SEG195 [110] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
+  //SEG329 [180] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
     cmp #7
     bne b4
-  //SEG196 init_plot_tables::@7
-  //SEG197 [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
+  //SEG330 init_plot_tables::@7
+  //SEG331 [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
     lda yoffs
     clc
     adc #<$140
@@ -13762,87 +21501,87 @@ init_plot_tables: {
     lda yoffs+1
     adc #>$140
     sta yoffs+1
-  //SEG198 [112] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
-  //SEG199 [112] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
-  //SEG200 init_plot_tables::@4
+  //SEG332 [182] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
+  //SEG333 [182] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
+  //SEG334 init_plot_tables::@4
   b4:
-  //SEG201 [113] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
+  //SEG335 [183] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
     inx
-  //SEG202 [114] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
+  //SEG336 [184] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b3
-  //SEG203 init_plot_tables::@return
-  //SEG204 [115] return  [ ]
+  //SEG337 init_plot_tables::@return
+  //SEG338 [185] return  [ ]
     rts
-  //SEG205 init_plot_tables::@10
+  //SEG339 init_plot_tables::@10
   b10:
-  //SEG206 [99] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
-  //SEG207 [99] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
+  //SEG340 [169] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
+  //SEG341 [169] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
     jmp b2
 }
-//SEG208 init_screen
+//SEG342 init_screen
 init_screen: {
-    .label b = 6
-    .label c = 6
-  //SEG209 [117] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
-  //SEG210 [117] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
+    .label b = 27
+    .label c = 27
+  //SEG343 [187] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
+  //SEG344 [187] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
     lda #<BITMAP
     sta b
     lda #>BITMAP
     sta b+1
-  //SEG211 [117] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
-  //SEG212 [117] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
-  //SEG213 init_screen::@1
+  //SEG345 [187] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
+  //SEG346 [187] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
+  //SEG347 init_screen::@1
   b1:
-  //SEG214 [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
+  //SEG348 [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #0
     sta (b),y
-  //SEG215 [119] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG349 [189] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
     inc b
     bne !+
     inc b+1
   !:
-  //SEG216 [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG350 [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda b+1
     cmp #>BITMAP+$2000
     bne b1
     lda b
     cmp #<BITMAP+$2000
     bne b1
-  //SEG217 [121] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
-  //SEG218 [121] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
+  //SEG351 [191] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
+  //SEG352 [191] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
     lda #<SCREEN
     sta c
     lda #>SCREEN
     sta c+1
-  //SEG219 [121] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
-  //SEG220 [121] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
-  //SEG221 init_screen::@2
+  //SEG353 [191] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
+  //SEG354 [191] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
+  //SEG355 init_screen::@2
   b2:
-  //SEG222 [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
+  //SEG356 [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #$14
     sta (c),y
-  //SEG223 [123] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG357 [193] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
     inc c
     bne !+
     inc c+1
   !:
-  //SEG224 [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG358 [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda c+1
     cmp #>SCREEN+$400
     bne b2
     lda c
     cmp #<SCREEN+$400
     bne b2
-  //SEG225 init_screen::@return
-  //SEG226 [125] return  [ ]
+  //SEG359 init_screen::@return
+  //SEG360 [195] return  [ ]
     rts
 }
 
 FINAL SYMBOL TABLE
-(label) @7
+(label) @10
 (label) @begin
 (label) @end
 (byte*) BGCOL
@@ -13902,46 +21641,89 @@ FINAL SYMBOL TABLE
 (byte) init_plot_tables::y#1 reg byte x 16.5
 (byte) init_plot_tables::y#2 reg byte x 6.0
 (byte*) init_plot_tables::yoffs
-(byte*) init_plot_tables::yoffs#1 yoffs zp ZP_PTR_BYTE:6 22.0
-(byte*) init_plot_tables::yoffs#2 yoffs zp ZP_PTR_BYTE:6 6.111111111111112
-(byte*) init_plot_tables::yoffs#4 yoffs zp ZP_PTR_BYTE:6 11.0
+(byte*) init_plot_tables::yoffs#1 yoffs zp ZP_PTR_BYTE:27 22.0
+(byte*) init_plot_tables::yoffs#2 yoffs zp ZP_PTR_BYTE:27 6.111111111111112
+(byte*) init_plot_tables::yoffs#4 yoffs zp ZP_PTR_BYTE:27 11.0
 (void()) init_screen()
 (label) init_screen::@1
 (label) init_screen::@2
 (label) init_screen::@return
 (byte*) init_screen::b
-(byte*) init_screen::b#1 b zp ZP_PTR_BYTE:6 16.5
-(byte*) init_screen::b#2 b zp ZP_PTR_BYTE:6 16.5
+(byte*) init_screen::b#1 b zp ZP_PTR_BYTE:27 16.5
+(byte*) init_screen::b#2 b zp ZP_PTR_BYTE:27 16.5
 (byte*) init_screen::c
-(byte*) init_screen::c#1 c zp ZP_PTR_BYTE:6 16.5
-(byte*) init_screen::c#2 c zp ZP_PTR_BYTE:6 16.5
+(byte*) init_screen::c#1 c zp ZP_PTR_BYTE:27 16.5
+(byte*) init_screen::c#2 c zp ZP_PTR_BYTE:27 16.5
 (void()) line((byte) line::x0 , (byte) line::x1 , (byte) line::y0 , (byte) line::y1)
 (label) line::@1
 (label) line::@10
-(label) line::@11
+(label) line::@13
 (label) line::@15
+(label) line::@16
 (label) line::@17
-(label) line::@19
 (label) line::@2
-(label) line::@22
+(label) line::@20
+(label) line::@23
 (label) line::@24
+(label) line::@27
 (label) line::@3
-(label) line::@7
+(label) line::@6
 (label) line::@9
 (label) line::@return
 (byte) line::x0
-(byte) line::x0#0 x0 zp ZP_BYTE:5 10.636363636363635
+(byte) line::x0#0 x0 zp ZP_BYTE:5 5.173913043478264
 (byte) line::x1
-(byte) line::x1#0 x1 zp ZP_BYTE:8 4.874999999999997
+(byte) line::x1#0 reg byte y 5.409090909090908
 (byte) line::xd
-(byte) line::xd#0 reg byte a 20.0
-(byte) line::xd#1 xd zp ZP_BYTE:10 0.8571428571428571
+(byte) line::xd#0 xd zp ZP_BYTE:8 0.7
+(byte) line::xd#1 xd zp ZP_BYTE:8 0.7
 (byte) line::y0
-(byte) line::y0#0 reg byte y 8.357142857142858
+(byte) line::y0#0 y0 zp ZP_BYTE:3 5.952380952380948
 (byte) line::y1
-(byte) line::y1#0 y1 zp ZP_BYTE:9 4.791666666666664
+(byte) line::y1#0 reg byte x 6.249999999999996
 (byte) line::yd
-(byte) line::yd#0 reg byte x 1.0
+(byte) line::yd#0 yd zp ZP_BYTE:4 0.8888888888888888
+(byte) line::yd#1 yd zp ZP_BYTE:4 0.8888888888888888
+(byte) line::yd#10 yd zp ZP_BYTE:4 0.8888888888888888
+(byte) line::yd#3 yd zp ZP_BYTE:4 0.8888888888888888
+(void()) line_xdyd((byte) line_xdyd::x , (byte) line_xdyd::y , (byte) line_xdyd::x1 , (byte) line_xdyd::xd , (byte) line_xdyd::yd)
+(byte~) line_xdyd::$8 reg byte a 22.0
+(label) line_xdyd::@1
+(label) line_xdyd::@2
+(label) line_xdyd::@3
+(label) line_xdyd::@5
+(label) line_xdyd::@return
+(byte) line_xdyd::e
+(byte) line_xdyd::e#0 e zp ZP_BYTE:26 4.0
+(byte) line_xdyd::e#1 e zp ZP_BYTE:26 14.666666666666666
+(byte) line_xdyd::e#2 e zp ZP_BYTE:26 22.0
+(byte) line_xdyd::e#3 e zp ZP_BYTE:26 4.800000000000001
+(byte) line_xdyd::e#6 e zp ZP_BYTE:26 11.0
+(byte) line_xdyd::x
+(byte) line_xdyd::x#0 x zp ZP_BYTE:24 0.8
+(byte) line_xdyd::x#1 x zp ZP_BYTE:24 0.8
+(byte) line_xdyd::x#2 x zp ZP_BYTE:24 4.125
+(byte) line_xdyd::x#3 x zp ZP_BYTE:24 8.75
+(byte) line_xdyd::x#6 x zp ZP_BYTE:24 3.0
+(byte) line_xdyd::x1
+(byte) line_xdyd::x1#0 x1 zp ZP_BYTE:23 1.3333333333333333
+(byte) line_xdyd::x1#1 x1 zp ZP_BYTE:23 1.3333333333333333
+(byte) line_xdyd::x1#6 x1 zp ZP_BYTE:23 1.0714285714285714
+(byte) line_xdyd::xd
+(byte) line_xdyd::xd#0 xd zp ZP_BYTE:22 2.0
+(byte) line_xdyd::xd#1 xd zp ZP_BYTE:22 2.0
+(byte) line_xdyd::xd#5 xd zp ZP_BYTE:22 1.8571428571428572
+(byte) line_xdyd::y
+(byte) line_xdyd::y#0 y zp ZP_BYTE:25 1.0
+(byte) line_xdyd::y#1 y zp ZP_BYTE:25 1.0
+(byte) line_xdyd::y#2 y zp ZP_BYTE:25 11.0
+(byte) line_xdyd::y#3 y zp ZP_BYTE:25 6.571428571428571
+(byte) line_xdyd::y#5 y zp ZP_BYTE:25 3.0
+(byte) line_xdyd::y#6 y zp ZP_BYTE:25 11.0
+(byte) line_xdyd::yd
+(byte) line_xdyd::yd#0 yd zp ZP_BYTE:21 4.0
+(byte) line_xdyd::yd#1 yd zp ZP_BYTE:21 4.0
+(byte) line_xdyd::yd#2 yd zp ZP_BYTE:21 1.2142857142857142
 (void()) line_xdyi((byte) line_xdyi::x , (byte) line_xdyi::y , (byte) line_xdyi::x1 , (byte) line_xdyi::xd , (byte) line_xdyi::yd)
 (byte~) line_xdyi::$8 reg byte a 22.0
 (label) line_xdyi::@1
@@ -13950,26 +21732,112 @@ FINAL SYMBOL TABLE
 (label) line_xdyi::@5
 (label) line_xdyi::@return
 (byte) line_xdyi::e
-(byte) line_xdyi::e#0 e zp ZP_BYTE:5 4.0
-(byte) line_xdyi::e#1 e zp ZP_BYTE:5 14.666666666666666
-(byte) line_xdyi::e#2 e zp ZP_BYTE:5 22.0
-(byte) line_xdyi::e#3 e zp ZP_BYTE:5 4.800000000000001
-(byte) line_xdyi::e#6 e zp ZP_BYTE:5 11.0
+(byte) line_xdyi::e#0 e zp ZP_BYTE:14 4.0
+(byte) line_xdyi::e#1 e zp ZP_BYTE:14 14.666666666666666
+(byte) line_xdyi::e#2 e zp ZP_BYTE:14 22.0
+(byte) line_xdyi::e#3 e zp ZP_BYTE:14 4.800000000000001
+(byte) line_xdyi::e#6 e zp ZP_BYTE:14 11.0
 (byte) line_xdyi::x
-(byte) line_xdyi::x#0 x zp ZP_BYTE:3 0.6666666666666666
-(byte) line_xdyi::x#1 x zp ZP_BYTE:3 4.125
-(byte) line_xdyi::x#2 x zp ZP_BYTE:3 8.75
+(byte) line_xdyi::x#0 x zp ZP_BYTE:12 0.8
+(byte) line_xdyi::x#1 x zp ZP_BYTE:12 0.8
+(byte) line_xdyi::x#2 x zp ZP_BYTE:12 4.125
+(byte) line_xdyi::x#3 x zp ZP_BYTE:12 8.75
+(byte) line_xdyi::x#6 x zp ZP_BYTE:12 3.0
 (byte) line_xdyi::x1
-(byte) line_xdyi::x1#0 x1 zp ZP_BYTE:11 0.8125
+(byte) line_xdyi::x1#0 x1 zp ZP_BYTE:11 1.3333333333333333
+(byte) line_xdyi::x1#1 x1 zp ZP_BYTE:11 1.3333333333333333
+(byte) line_xdyi::x1#6 x1 zp ZP_BYTE:11 1.0714285714285714
 (byte) line_xdyi::xd
-(byte) line_xdyi::xd#0 xd zp ZP_BYTE:10 1.5999999999999999
+(byte) line_xdyi::xd#0 xd zp ZP_BYTE:10 2.0
+(byte) line_xdyi::xd#1 xd zp ZP_BYTE:10 2.0
+(byte) line_xdyi::xd#5 xd zp ZP_BYTE:10 1.8571428571428572
 (byte) line_xdyi::y
-(byte) line_xdyi::y#0 y zp ZP_BYTE:4 0.8
-(byte) line_xdyi::y#1 y zp ZP_BYTE:4 11.0
-(byte) line_xdyi::y#2 y zp ZP_BYTE:4 6.571428571428571
-(byte) line_xdyi::y#5 y zp ZP_BYTE:4 11.0
+(byte) line_xdyi::y#0 y zp ZP_BYTE:13 1.0
+(byte) line_xdyi::y#1 y zp ZP_BYTE:13 1.0
+(byte) line_xdyi::y#2 y zp ZP_BYTE:13 11.0
+(byte) line_xdyi::y#3 y zp ZP_BYTE:13 6.571428571428571
+(byte) line_xdyi::y#5 y zp ZP_BYTE:13 3.0
+(byte) line_xdyi::y#6 y zp ZP_BYTE:13 11.0
 (byte) line_xdyi::yd
-(byte) line_xdyi::yd#0 yd zp ZP_BYTE:12 1.0714285714285714
+(byte) line_xdyi::yd#0 yd zp ZP_BYTE:9 4.0
+(byte) line_xdyi::yd#1 yd zp ZP_BYTE:9 4.0
+(byte) line_xdyi::yd#2 yd zp ZP_BYTE:9 1.2142857142857142
+(void()) line_ydxd((byte) line_ydxd::y , (byte) line_ydxd::x , (byte) line_ydxd::y1 , (byte) line_ydxd::yd , (byte) line_ydxd::xd)
+(byte~) line_ydxd::$8 reg byte a 22.0
+(label) line_ydxd::@1
+(label) line_ydxd::@2
+(label) line_ydxd::@3
+(label) line_ydxd::@5
+(label) line_ydxd::@return
+(byte) line_ydxd::e
+(byte) line_ydxd::e#0 e zp ZP_BYTE:20 4.0
+(byte) line_ydxd::e#1 e zp ZP_BYTE:20 14.666666666666666
+(byte) line_ydxd::e#2 e zp ZP_BYTE:20 22.0
+(byte) line_ydxd::e#3 e zp ZP_BYTE:20 4.800000000000001
+(byte) line_ydxd::e#6 e zp ZP_BYTE:20 11.0
+(byte) line_ydxd::x
+(byte) line_ydxd::x#0 x zp ZP_BYTE:18 1.0
+(byte) line_ydxd::x#1 x zp ZP_BYTE:18 1.0
+(byte) line_ydxd::x#2 x zp ZP_BYTE:18 11.0
+(byte) line_ydxd::x#3 x zp ZP_BYTE:18 6.571428571428571
+(byte) line_ydxd::x#5 x zp ZP_BYTE:18 3.0
+(byte) line_ydxd::x#6 x zp ZP_BYTE:18 11.0
+(byte) line_ydxd::xd
+(byte) line_ydxd::xd#0 xd zp ZP_BYTE:15 4.0
+(byte) line_ydxd::xd#1 xd zp ZP_BYTE:15 4.0
+(byte) line_ydxd::xd#2 xd zp ZP_BYTE:15 1.2142857142857142
+(byte) line_ydxd::y
+(byte) line_ydxd::y#0 y zp ZP_BYTE:19 0.8
+(byte) line_ydxd::y#1 y zp ZP_BYTE:19 0.8
+(byte) line_ydxd::y#2 y zp ZP_BYTE:19 4.125
+(byte) line_ydxd::y#3 y zp ZP_BYTE:19 8.75
+(byte) line_ydxd::y#6 y zp ZP_BYTE:19 3.0
+(byte) line_ydxd::y1
+(byte) line_ydxd::y1#0 y1 zp ZP_BYTE:17 1.3333333333333333
+(byte) line_ydxd::y1#1 y1 zp ZP_BYTE:17 1.3333333333333333
+(byte) line_ydxd::y1#6 y1 zp ZP_BYTE:17 1.0714285714285714
+(byte) line_ydxd::yd
+(byte) line_ydxd::yd#0 yd zp ZP_BYTE:16 2.0
+(byte) line_ydxd::yd#1 yd zp ZP_BYTE:16 2.0
+(byte) line_ydxd::yd#5 yd zp ZP_BYTE:16 1.8571428571428572
+(void()) line_ydxi((byte) line_ydxi::y , (byte) line_ydxi::x , (byte) line_ydxi::y1 , (byte) line_ydxi::yd , (byte) line_ydxi::xd)
+(byte~) line_ydxi::$8 reg byte a 22.0
+(label) line_ydxi::@1
+(label) line_ydxi::@2
+(label) line_ydxi::@3
+(label) line_ydxi::@5
+(label) line_ydxi::@return
+(byte) line_ydxi::e
+(byte) line_ydxi::e#0 e zp ZP_BYTE:8 4.0
+(byte) line_ydxi::e#1 e zp ZP_BYTE:8 14.666666666666666
+(byte) line_ydxi::e#2 e zp ZP_BYTE:8 22.0
+(byte) line_ydxi::e#3 e zp ZP_BYTE:8 4.800000000000001
+(byte) line_ydxi::e#6 e zp ZP_BYTE:8 11.0
+(byte) line_ydxi::x
+(byte) line_ydxi::x#0 x zp ZP_BYTE:6 1.0
+(byte) line_ydxi::x#1 x zp ZP_BYTE:6 1.0
+(byte) line_ydxi::x#2 x zp ZP_BYTE:6 11.0
+(byte) line_ydxi::x#3 x zp ZP_BYTE:6 6.571428571428571
+(byte) line_ydxi::x#5 x zp ZP_BYTE:6 3.0
+(byte) line_ydxi::x#6 x zp ZP_BYTE:6 11.0
+(byte) line_ydxi::xd
+(byte) line_ydxi::xd#0 xd zp ZP_BYTE:3 4.0
+(byte) line_ydxi::xd#1 xd zp ZP_BYTE:3 4.0
+(byte) line_ydxi::xd#2 xd zp ZP_BYTE:3 1.2142857142857142
+(byte) line_ydxi::y
+(byte) line_ydxi::y#0 y zp ZP_BYTE:7 0.8
+(byte) line_ydxi::y#1 y zp ZP_BYTE:7 0.8
+(byte) line_ydxi::y#2 y zp ZP_BYTE:7 4.125
+(byte) line_ydxi::y#3 y zp ZP_BYTE:7 8.75
+(byte) line_ydxi::y#6 y zp ZP_BYTE:7 3.0
+(byte) line_ydxi::y1
+(byte) line_ydxi::y1#0 y1 zp ZP_BYTE:5 1.3333333333333333
+(byte) line_ydxi::y1#1 y1 zp ZP_BYTE:5 1.3333333333333333
+(byte) line_ydxi::y1#6 y1 zp ZP_BYTE:5 1.0714285714285714
+(byte) line_ydxi::yd
+(byte) line_ydxi::yd#0 yd zp ZP_BYTE:4 2.0
+(byte) line_ydxi::yd#1 yd zp ZP_BYTE:4 2.0
+(byte) line_ydxi::yd#5 yd zp ZP_BYTE:4 1.8571428571428572
 (void()) lines()
 (byte~) lines::$0 reg byte y 50.5
 (byte~) lines::$2 $2 zp ZP_BYTE:3 50.5
@@ -13997,40 +21865,30 @@ FINAL SYMBOL TABLE
 (byte~) plot::$1 reg byte a 4.0
 (byte~) plot::$2 reg byte a 4.0
 (byte~) plot::$3 reg byte a 4.0
-(byte~) plot::$5 $5 zp ZP_BYTE:15 2.0
+(byte~) plot::$5 $5 zp ZP_BYTE:31 2.0
 (byte~) plot::$6 reg byte a 4.0
 (byte~) plot::$7 reg byte a 4.0
 (label) plot::@return
 (byte*) plot::plotter
-(byte*) plot::plotter#0 plotter zp ZP_PTR_BYTE:6 1.5
+(byte*) plot::plotter#0 plotter zp ZP_PTR_BYTE:27 1.5
 (byte*) plot::plotter_x
-(byte*) plot::plotter_x#1 plotter_x zp ZP_PTR_BYTE:6 2.0
-(byte*) plot::plotter_x#2 plotter_x zp ZP_PTR_BYTE:6 0.8
+(byte*) plot::plotter_x#1 plotter_x zp ZP_PTR_BYTE:27 2.0
+(byte*) plot::plotter_x#2 plotter_x zp ZP_PTR_BYTE:27 0.8
 (byte*) plot::plotter_y
-(byte*) plot::plotter_y#1 plotter_y zp ZP_PTR_BYTE:13 2.0
-(byte*) plot::plotter_y#2 plotter_y zp ZP_PTR_BYTE:13 4.0
+(byte*) plot::plotter_y#1 plotter_y zp ZP_PTR_BYTE:29 2.0
+(byte*) plot::plotter_y#2 plotter_y zp ZP_PTR_BYTE:29 4.0
 (byte) plot::x
-(byte) plot::x#0 reg byte x 2.0
-(byte) plot::x#1 reg byte x 2.0
-(byte) plot::x#2 reg byte x 2.0
-(byte) plot::x#3 reg byte x 2.0
-(byte) plot::x#4 reg byte x 2.0
-(byte) plot::x#5 reg byte x 2.0
-(byte) plot::x#6 reg byte x 2.0
-(byte) plot::x#7 reg byte x 2.0
-(byte) plot::x#8 reg byte x 11.0
-(byte) plot::x#9 reg byte x 3.0
+(byte) plot::x#0 reg byte x 11.0
+(byte) plot::x#1 reg byte x 11.0
+(byte) plot::x#2 reg byte x 11.0
+(byte) plot::x#3 reg byte x 11.0
+(byte) plot::x#4 reg byte x 4.545454545454545
 (byte) plot::y
-(byte) plot::y#0 reg byte y 4.0
-(byte) plot::y#1 reg byte y 4.0
-(byte) plot::y#2 reg byte y 4.0
-(byte) plot::y#3 reg byte y 4.0
-(byte) plot::y#4 reg byte y 4.0
-(byte) plot::y#5 reg byte y 4.0
-(byte) plot::y#6 reg byte y 4.0
-(byte) plot::y#7 reg byte y 4.0
-(byte) plot::y#8 reg byte y 22.0
-(byte) plot::y#9 reg byte y 4.428571428571428
+(byte) plot::y#0 reg byte y 22.0
+(byte) plot::y#1 reg byte y 22.0
+(byte) plot::y#2 reg byte y 22.0
+(byte) plot::y#3 reg byte y 22.0
+(byte) plot::y#4 reg byte y 6.857142857142857
 (byte[]) plot_bit
 (const byte[]) plot_bit#0 plot_bit = (word) 5120
 (byte[]) plot_xhi
@@ -14043,34 +21901,52 @@ FINAL SYMBOL TABLE
 (const byte[]) plot_ylo#0 plot_ylo = (word) 4608
 
 zp ZP_BYTE:2 [ lines::l#2 lines::l#1 init_plot_tables::$6 ]
-reg byte x [ plot::x#9 plot::x#6 plot::x#1 plot::x#3 plot::x#0 plot::x#5 plot::x#7 plot::x#2 plot::x#4 plot::x#8 ]
-reg byte y [ plot::y#9 plot::y#6 plot::y#1 plot::y#3 plot::y#0 plot::y#5 plot::y#7 plot::y#2 plot::y#4 plot::y#8 ]
-zp ZP_BYTE:3 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 lines::$2 ]
-zp ZP_BYTE:4 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 lines::$3 ]
-zp ZP_BYTE:5 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 line::x0#0 ]
+zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 lines::$2 line::y0#0 ]
+zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 lines::$3 line::yd#1 line::yd#0 line::yd#3 line::yd#10 ]
+zp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 line::x0#0 ]
+zp ZP_BYTE:6 [ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ]
+zp ZP_BYTE:7 [ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ]
+zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 line::xd#1 line::xd#0 ]
+reg byte x [ plot::x#4 plot::x#1 plot::x#0 plot::x#3 plot::x#2 ]
+reg byte y [ plot::y#4 plot::y#1 plot::y#0 plot::y#3 plot::y#2 ]
+zp ZP_BYTE:9 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ]
+zp ZP_BYTE:10 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ]
+zp ZP_BYTE:11 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ]
+zp ZP_BYTE:12 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ]
+zp ZP_BYTE:13 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ]
+zp ZP_BYTE:14 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
+zp ZP_BYTE:15 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ]
+zp ZP_BYTE:16 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ]
+zp ZP_BYTE:17 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ]
+zp ZP_BYTE:18 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ]
+zp ZP_BYTE:19 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ]
+zp ZP_BYTE:20 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ]
+zp ZP_BYTE:21 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ]
+zp ZP_BYTE:22 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ]
+zp ZP_BYTE:23 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ]
+zp ZP_BYTE:24 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ]
+zp ZP_BYTE:25 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ]
+zp ZP_BYTE:26 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ]
 reg byte x [ init_plot_tables::x#2 init_plot_tables::x#1 ]
 reg byte y [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ]
 reg byte x [ init_plot_tables::y#2 init_plot_tables::y#1 ]
-zp ZP_PTR_BYTE:6 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 plot::plotter_x#1 plot::plotter_x#2 plot::plotter#0 ]
+zp ZP_PTR_BYTE:27 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 plot::plotter_x#1 plot::plotter_x#2 plot::plotter#0 ]
 reg byte y [ lines::$0 ]
 reg byte x [ lines::$5 ]
-zp ZP_BYTE:8 [ line::x1#0 ]
-reg byte y [ line::y0#0 ]
-zp ZP_BYTE:9 [ line::y1#0 ]
-zp ZP_BYTE:10 [ line::xd#1 line_xdyi::xd#0 ]
-reg byte x [ line::yd#0 ]
-zp ZP_BYTE:11 [ line_xdyi::x1#0 ]
-zp ZP_BYTE:12 [ line_xdyi::yd#0 ]
-reg byte a [ line::xd#0 ]
+reg byte y [ line::x1#0 ]
+reg byte x [ line::y1#0 ]
+reg byte a [ line_ydxi::$8 ]
 reg byte a [ plot::$0 ]
 reg byte a [ plot::$1 ]
 reg byte a [ plot::$2 ]
-zp ZP_PTR_BYTE:13 [ plot::plotter_y#1 plot::plotter_y#2 ]
+zp ZP_PTR_BYTE:29 [ plot::plotter_y#1 plot::plotter_y#2 ]
 reg byte a [ plot::$3 ]
-zp ZP_BYTE:15 [ plot::$5 ]
+zp ZP_BYTE:31 [ plot::$5 ]
 reg byte a [ plot::$6 ]
 reg byte a [ plot::$7 ]
 reg byte a [ line_xdyi::$8 ]
+reg byte a [ line_ydxd::$8 ]
+reg byte a [ line_xdyd::$8 ]
 reg byte a [ init_plot_tables::$0 ]
 reg byte a [ init_plot_tables::$7 ]
 reg byte a [ init_plot_tables::$8 ]
@@ -14104,7 +21980,7 @@ FINAL CODE
   lines_x: .byte $3c, $50, $6e, $50, $3c, $28, $a, $28, $3c
   lines_y: .byte $a, $28, $3c, $50, $6e, $50, $3c, $28, $a
 //SEG1 @begin
-//SEG2 @7
+//SEG2 @10
 //SEG3 [0] call main param-assignment [ ]
   jsr main
 //SEG4 @end
@@ -14122,11 +21998,11 @@ main: {
     lda #$18
     sta D018
   //SEG10 [5] call init_screen param-assignment [ ]
-  //SEG11 [116] phi from main to init_screen [phi:main->init_screen]
+  //SEG11 [186] phi from main to init_screen [phi:main->init_screen]
     jsr init_screen
   //SEG12 main::@3
   //SEG13 [6] call init_plot_tables param-assignment [ ]
-  //SEG14 [91] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
+  //SEG14 [161] phi from main::@3 to init_plot_tables [phi:main::@3->init_plot_tables]
     jsr init_plot_tables
   //SEG15 main::@1
   b1:
@@ -14171,13 +22047,13 @@ lines: {
     tax
   //SEG32 [16] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] -- zpby1=yby 
     sty line.x0
-  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- zpby1=zpby2 
-    lda _2
-    sta line.x1
-  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- yby=zpby1 
-    ldy _3
-  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1=xby 
-    stx line.y1
+  //SEG33 [17] (byte) line::x1#0 ← (byte~) lines::$2 [ lines::l#2 lines::$3 lines::$5 line::x0#0 line::x1#0 ] -- yby=zpby1 
+    ldy _2
+  //SEG34 [18] (byte) line::y0#0 ← (byte~) lines::$3 [ lines::l#2 lines::$5 line::x0#0 line::x1#0 line::y0#0 ] -- zpby1=zpby2 
+    lda _3
+    sta line.y0
+  //SEG35 [19] (byte) line::y1#0 ← (byte~) lines::$5 [ lines::l#2 line::x0#0 line::x1#0 line::y0#0 line::y1#0 ]
+    // (byte) line::y1#0 = (byte~) lines::$5  // register copy reg byte x
   //SEG36 [20] call line param-assignment [ lines::l#2 ]
     jsr line
   //SEG37 lines::@3
@@ -14194,175 +22070,360 @@ lines: {
 //SEG42 line
 line: {
     .label x0 = 5
-    .label x1 = 8
-    .label y1 = 9
-    .label xd = 10
-  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_zpby2_then_la1 
-    lda x0
-    cmp x1
-    bcs b1
-  //SEG44 line::@9
-  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=zpby2_minus_zpby3 
-    lda x1
+    .label y0 = 3
+    .label xd = 8
+    .label yd = 4
+  //SEG43 [24] if((byte) line::x0#0>=(byte) line::x1#0) goto line::@1 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- zpby1_ge_yby_then_la1 
+    cpy x0
+    bcc b1
+  //SEG44 line::@15
+  //SEG45 [25] (byte) line::xd#1 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1=yby_minus_zpby2 
+    tya
     sec
     sbc x0
     sta xd
-  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b2
-  //SEG47 line::@10
-  //SEG48 [27] (byte) line::yd#0 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby=zpby1_minus_yby 
-    sty $ff
-    lda y1
+  //SEG46 [26] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@2 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b2
+  //SEG47 line::@16
+  //SEG48 [27] (byte) line::yd#1 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1=xby_minus_zpby2 
+    txa
     sec
-    sbc $ff
-    tax
-  //SEG49 [28] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- xby_ge_zpby1_then_la1 
-    cpx xd
+    sbc y0
+    sta yd
+  //SEG49 [28] if((byte) line::yd#1>=(byte) line::xd#1) goto line::@3 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
     bcs b3
-  //SEG50 line::@11
-  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyi::x#0 ] -- zpby1=zpby2 
+  //SEG50 line::@17
+  //SEG51 [29] (byte) line_xdyi::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#1 line_xdyi::x#0 ] -- zpby1=zpby2 
     lda x0
     sta line_xdyi.x
-  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=yby 
-    sty line_xdyi.y
-  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=zpby2 
-    lda x1
-    sta line_xdyi.x1
-  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ]
-    // (byte) line_xdyi::xd#0 = (byte) line::xd#1  // register copy zp ZP_BYTE:10
-  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#0 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=xby 
-    stx line_xdyi.yd
+  //SEG52 [30] (byte) line_xdyi::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyi.y
+  //SEG53 [31] (byte) line_xdyi::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 ] -- zpby1=yby 
+    sty line_xdyi.x1
+  //SEG54 [32] (byte) line_xdyi::xd#0 ← (byte) line::xd#1 [ line::yd#1 line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG55 [33] (byte) line_xdyi::yd#0 ← (byte) line::yd#1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
   //SEG56 [34] call line_xdyi param-assignment [ ]
+  //SEG57 [116] phi from line::@17 to line_xdyi [phi:line::@17->line_xdyi]
+  //SEG58 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#0 [phi:line::@17->line_xdyi#0] -- register_copy 
+  //SEG59 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#0 [phi:line::@17->line_xdyi#1] -- register_copy 
+  //SEG60 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#0 [phi:line::@17->line_xdyi#2] -- register_copy 
+  //SEG61 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#0 [phi:line::@17->line_xdyi#3] -- register_copy 
+  //SEG62 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#0 [phi:line::@17->line_xdyi#4] -- register_copy 
     jsr line_xdyi
-  //SEG57 line::@return
+  //SEG63 line::@return
   breturn:
-  //SEG58 [35] return  [ ]
+  //SEG64 [35] return  [ ]
     rts
-  //SEG59 line::@3
+  //SEG65 line::@3
   b3:
-  //SEG60 [36] (byte) plot::x#2 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#2 ] -- xby=zpby1 
-    ldx x0
-  //SEG61 [37] (byte) plot::y#2 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#2 plot::y#2 ]
-    // (byte) plot::y#2 = (byte) line::y0#0  // register copy reg byte y
-  //SEG62 [38] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG63 [62] phi from line::@3 to plot [phi:line::@3->plot]
-  //SEG64 [62] phi (byte) plot::y#9 = (byte) plot::y#2 [phi:line::@3->plot#0] -- register_copy 
-  //SEG65 [62] phi (byte) plot::x#9 = (byte) plot::x#2 [phi:line::@3->plot#1] -- register_copy 
-    jsr plot
-  //SEG66 line::@19
-  //SEG67 [39] (byte) plot::x#3 ← (byte) line::x1#0 [ line::y1#0 plot::x#3 ] -- xby=zpby1 
-    ldx x1
-  //SEG68 [40] (byte) plot::y#3 ← (byte) line::y1#0 [ plot::x#3 plot::y#3 ] -- yby=zpby1 
-    ldy y1
-  //SEG69 [41] call plot param-assignment [ ]
-  //SEG70 [62] phi from line::@19 to plot [phi:line::@19->plot]
-  //SEG71 [62] phi (byte) plot::y#9 = (byte) plot::y#3 [phi:line::@19->plot#0] -- register_copy 
-  //SEG72 [62] phi (byte) plot::x#9 = (byte) plot::x#3 [phi:line::@19->plot#1] -- register_copy 
-    jsr plot
+  //SEG66 [36] (byte) line_ydxi::y#0 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y
+  //SEG67 [37] (byte) line_ydxi::x#0 ← (byte) line::x0#0 [ line::y1#0 line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxi.x
+  //SEG68 [38] (byte) line_ydxi::y1#0 ← (byte) line::y1#0 [ line::xd#1 line::yd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 ] -- zpby1=xby 
+    stx line_ydxi.y1
+  //SEG69 [39] (byte) line_ydxi::yd#0 ← (byte) line::yd#1 [ line::xd#1 line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 ]
+    // (byte) line_ydxi::yd#0 = (byte) line::yd#1  // register copy zp ZP_BYTE:4
+  //SEG70 [40] (byte) line_ydxi::xd#0 ← (byte) line::xd#1 [ line_ydxi::y#0 line_ydxi::x#0 line_ydxi::y1#0 line_ydxi::yd#0 line_ydxi::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG71 [41] call line_ydxi param-assignment [ ]
+  //SEG72 [86] phi from line::@3 to line_ydxi [phi:line::@3->line_ydxi]
+  //SEG73 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#0 [phi:line::@3->line_ydxi#0] -- register_copy 
+  //SEG74 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#0 [phi:line::@3->line_ydxi#1] -- register_copy 
+  //SEG75 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#0 [phi:line::@3->line_ydxi#2] -- register_copy 
+  //SEG76 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#0 [phi:line::@3->line_ydxi#3] -- register_copy 
+  //SEG77 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#0 [phi:line::@3->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
-  //SEG73 line::@2
+  //SEG78 line::@2
   b2:
-  //SEG74 [42] (byte) plot::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#0 ] -- xby=zpby1 
-    ldx x0
-  //SEG75 [43] (byte) plot::y#0 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#0 plot::y#0 ]
-    // (byte) plot::y#0 = (byte) line::y0#0  // register copy reg byte y
-  //SEG76 [44] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG77 [62] phi from line::@2 to plot [phi:line::@2->plot]
-  //SEG78 [62] phi (byte) plot::y#9 = (byte) plot::y#0 [phi:line::@2->plot#0] -- register_copy 
-  //SEG79 [62] phi (byte) plot::x#9 = (byte) plot::x#0 [phi:line::@2->plot#1] -- register_copy 
-    jsr plot
-  //SEG80 line::@17
-  //SEG81 [45] (byte) plot::x#1 ← (byte) line::x1#0 [ line::y1#0 plot::x#1 ] -- xby=zpby1 
-    ldx x1
-  //SEG82 [46] (byte) plot::y#1 ← (byte) line::y1#0 [ plot::x#1 plot::y#1 ] -- yby=zpby1 
-    ldy y1
-  //SEG83 [47] call plot param-assignment [ ]
-  //SEG84 [62] phi from line::@17 to plot [phi:line::@17->plot]
-  //SEG85 [62] phi (byte) plot::y#9 = (byte) plot::y#1 [phi:line::@17->plot#0] -- register_copy 
-  //SEG86 [62] phi (byte) plot::x#9 = (byte) plot::x#1 [phi:line::@17->plot#1] -- register_copy 
-    jsr plot
-    jmp breturn
-  //SEG87 line::@1
-  b1:
-  //SEG88 [48] (byte) line::xd#0 ← (byte) line::x1#0 - (byte) line::x0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- aby=zpby1_minus_zpby2 
-    lda x1
+  //SEG79 [42] (byte) line::yd#0 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
     sec
-    sbc x0
-  //SEG89 [49] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@7 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 ] -- yby_ge_zpby1_then_la1 
-    cpy y1
-    bcs b7
-  //SEG90 line::@15
-  //SEG91 [50] (byte) plot::x#6 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#6 ] -- xby=zpby1 
-    ldx x0
-  //SEG92 [51] (byte) plot::y#6 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#6 plot::y#6 ]
-    // (byte) plot::y#6 = (byte) line::y0#0  // register copy reg byte y
-  //SEG93 [52] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG94 [62] phi from line::@15 to plot [phi:line::@15->plot]
-  //SEG95 [62] phi (byte) plot::y#9 = (byte) plot::y#6 [phi:line::@15->plot#0] -- register_copy 
-  //SEG96 [62] phi (byte) plot::x#9 = (byte) plot::x#6 [phi:line::@15->plot#1] -- register_copy 
-    jsr plot
-  //SEG97 line::@24
-  //SEG98 [53] (byte) plot::x#7 ← (byte) line::x1#0 [ line::y1#0 plot::x#7 ] -- xby=zpby1 
-    ldx x1
-  //SEG99 [54] (byte) plot::y#7 ← (byte) line::y1#0 [ plot::x#7 plot::y#7 ] -- yby=zpby1 
-    ldy y1
-  //SEG100 [55] call plot param-assignment [ ]
-  //SEG101 [62] phi from line::@24 to plot [phi:line::@24->plot]
-  //SEG102 [62] phi (byte) plot::y#9 = (byte) plot::y#7 [phi:line::@24->plot#0] -- register_copy 
-  //SEG103 [62] phi (byte) plot::x#9 = (byte) plot::x#7 [phi:line::@24->plot#1] -- register_copy 
-    jsr plot
+    sbc $ff
+    sta yd
+  //SEG80 [43] if((byte) line::yd#0>=(byte) line::xd#1) goto line::@6 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#1 line::yd#0 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b6
+  //SEG81 line::@20
+  //SEG82 [44] (byte) line_xdyd::x#0 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_xdyd::x#0 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x
+  //SEG83 [45] (byte) line_xdyd::y#0 ← (byte) line::y0#0 [ line::x1#0 line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_xdyd.y
+  //SEG84 [46] (byte) line_xdyd::x1#0 ← (byte) line::x1#0 [ line::xd#1 line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 ] -- zpby1=yby 
+    sty line_xdyd.x1
+  //SEG85 [47] (byte) line_xdyd::xd#0 ← (byte) line::xd#1 [ line::yd#0 line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG86 [48] (byte) line_xdyd::yd#0 ← (byte) line::yd#0 [ line_xdyd::x#0 line_xdyd::y#0 line_xdyd::x1#0 line_xdyd::xd#0 line_xdyd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG87 [49] call line_xdyd param-assignment [ ]
+  //SEG88 [146] phi from line::@20 to line_xdyd [phi:line::@20->line_xdyd]
+  //SEG89 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#0 [phi:line::@20->line_xdyd#0] -- register_copy 
+  //SEG90 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#0 [phi:line::@20->line_xdyd#1] -- register_copy 
+  //SEG91 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#0 [phi:line::@20->line_xdyd#2] -- register_copy 
+  //SEG92 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#0 [phi:line::@20->line_xdyd#3] -- register_copy 
+  //SEG93 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#0 [phi:line::@20->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
     jmp breturn
-  //SEG104 line::@7
-  b7:
-  //SEG105 [56] (byte) plot::x#4 ← (byte) line::x0#0 [ line::x1#0 line::y0#0 line::y1#0 plot::x#4 ] -- xby=zpby1 
-    ldx x0
-  //SEG106 [57] (byte) plot::y#4 ← (byte) line::y0#0 [ line::x1#0 line::y1#0 plot::x#4 plot::y#4 ]
-    // (byte) plot::y#4 = (byte) line::y0#0  // register copy reg byte y
-  //SEG107 [58] call plot param-assignment [ line::x1#0 line::y1#0 ]
-  //SEG108 [62] phi from line::@7 to plot [phi:line::@7->plot]
-  //SEG109 [62] phi (byte) plot::y#9 = (byte) plot::y#4 [phi:line::@7->plot#0] -- register_copy 
-  //SEG110 [62] phi (byte) plot::x#9 = (byte) plot::x#4 [phi:line::@7->plot#1] -- register_copy 
-    jsr plot
-  //SEG111 line::@22
-  //SEG112 [59] (byte) plot::x#5 ← (byte) line::x1#0 [ line::y1#0 plot::x#5 ] -- xby=zpby1 
-    ldx x1
-  //SEG113 [60] (byte) plot::y#5 ← (byte) line::y1#0 [ plot::x#5 plot::y#5 ] -- yby=zpby1 
-    ldy y1
-  //SEG114 [61] call plot param-assignment [ ]
-  //SEG115 [62] phi from line::@22 to plot [phi:line::@22->plot]
-  //SEG116 [62] phi (byte) plot::y#9 = (byte) plot::y#5 [phi:line::@22->plot#0] -- register_copy 
-  //SEG117 [62] phi (byte) plot::x#9 = (byte) plot::x#5 [phi:line::@22->plot#1] -- register_copy 
-    jsr plot
+  //SEG94 line::@6
+  b6:
+  //SEG95 [50] (byte) line_ydxd::y#0 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 ] -- zpby1=xby 
+    stx line_ydxd.y
+  //SEG96 [51] (byte) line_ydxd::x#0 ← (byte) line::x1#0 [ line::y0#0 line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 ] -- zpby1=yby 
+    sty line_ydxd.x
+  //SEG97 [52] (byte) line_ydxd::y1#0 ← (byte) line::y0#0 [ line::xd#1 line::yd#0 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y1
+  //SEG98 [53] (byte) line_ydxd::yd#0 ← (byte) line::yd#0 [ line::xd#1 line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG99 [54] (byte) line_ydxd::xd#0 ← (byte) line::xd#1 [ line_ydxd::y#0 line_ydxd::x#0 line_ydxd::y1#0 line_ydxd::yd#0 line_ydxd::xd#0 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG100 [55] call line_ydxd param-assignment [ ]
+  //SEG101 [131] phi from line::@6 to line_ydxd [phi:line::@6->line_ydxd]
+  //SEG102 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#0 [phi:line::@6->line_ydxd#0] -- register_copy 
+  //SEG103 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#0 [phi:line::@6->line_ydxd#1] -- register_copy 
+  //SEG104 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#0 [phi:line::@6->line_ydxd#2] -- register_copy 
+  //SEG105 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#0 [phi:line::@6->line_ydxd#3] -- register_copy 
+  //SEG106 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#0 [phi:line::@6->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG107 line::@1
+  b1:
+  //SEG108 [56] (byte) line::xd#0 ← (byte) line::x0#0 - (byte) line::x1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1=zpby2_minus_yby 
+    sty $ff
+    lda x0
+    sec
+    sbc $ff
+    sta xd
+  //SEG109 [57] if((byte) line::y0#0>=(byte) line::y1#0) goto line::@9 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 ] -- zpby1_ge_xby_then_la1 
+    cpx y0
+    bcc b9
+  //SEG110 line::@23
+  //SEG111 [58] (byte) line::yd#3 ← (byte) line::y1#0 - (byte) line::y0#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1=xby_minus_zpby2 
+    txa
+    sec
+    sbc y0
+    sta yd
+  //SEG112 [59] if((byte) line::yd#3>=(byte) line::xd#0) goto line::@10 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#3 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b10
+  //SEG113 line::@24
+  //SEG114 [60] (byte) line_xdyd::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_xdyd::x#1 ] -- zpby1=yby 
+    sty line_xdyd.x
+  //SEG115 [61] (byte) line_xdyd::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 ] -- zpby1=xby 
+    stx line_xdyd.y
+  //SEG116 [62] (byte) line_xdyd::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyd.x1
+  //SEG117 [63] (byte) line_xdyd::xd#1 ← (byte) line::xd#0 [ line::yd#3 line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyd.xd
+  //SEG118 [64] (byte) line_xdyd::yd#1 ← (byte) line::yd#3 [ line_xdyd::x#1 line_xdyd::y#1 line_xdyd::x1#1 line_xdyd::xd#1 line_xdyd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyd.yd
+  //SEG119 [65] call line_xdyd param-assignment [ ]
+  //SEG120 [146] phi from line::@24 to line_xdyd [phi:line::@24->line_xdyd]
+  //SEG121 [146] phi (byte) line_xdyd::x1#6 = (byte) line_xdyd::x1#1 [phi:line::@24->line_xdyd#0] -- register_copy 
+  //SEG122 [146] phi (byte) line_xdyd::xd#5 = (byte) line_xdyd::xd#1 [phi:line::@24->line_xdyd#1] -- register_copy 
+  //SEG123 [146] phi (byte) line_xdyd::y#5 = (byte) line_xdyd::y#1 [phi:line::@24->line_xdyd#2] -- register_copy 
+  //SEG124 [146] phi (byte) line_xdyd::x#6 = (byte) line_xdyd::x#1 [phi:line::@24->line_xdyd#3] -- register_copy 
+  //SEG125 [146] phi (byte) line_xdyd::yd#2 = (byte) line_xdyd::yd#1 [phi:line::@24->line_xdyd#4] -- register_copy 
+    jsr line_xdyd
+    jmp breturn
+  //SEG126 line::@10
+  b10:
+  //SEG127 [66] (byte) line_ydxd::y#1 ← (byte) line::y0#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxd.y
+  //SEG128 [67] (byte) line_ydxd::x#1 ← (byte) line::x0#0 [ line::y1#0 line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_ydxd.x
+  //SEG129 [68] (byte) line_ydxd::y1#1 ← (byte) line::y1#0 [ line::xd#0 line::yd#3 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 ] -- zpby1=xby 
+    stx line_ydxd.y1
+  //SEG130 [69] (byte) line_ydxd::yd#1 ← (byte) line::yd#3 [ line::xd#0 line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_ydxd.yd
+  //SEG131 [70] (byte) line_ydxd::xd#1 ← (byte) line::xd#0 [ line_ydxd::y#1 line_ydxd::x#1 line_ydxd::y1#1 line_ydxd::yd#1 line_ydxd::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxd.xd
+  //SEG132 [71] call line_ydxd param-assignment [ ]
+  //SEG133 [131] phi from line::@10 to line_ydxd [phi:line::@10->line_ydxd]
+  //SEG134 [131] phi (byte) line_ydxd::y1#6 = (byte) line_ydxd::y1#1 [phi:line::@10->line_ydxd#0] -- register_copy 
+  //SEG135 [131] phi (byte) line_ydxd::yd#5 = (byte) line_ydxd::yd#1 [phi:line::@10->line_ydxd#1] -- register_copy 
+  //SEG136 [131] phi (byte) line_ydxd::y#6 = (byte) line_ydxd::y#1 [phi:line::@10->line_ydxd#2] -- register_copy 
+  //SEG137 [131] phi (byte) line_ydxd::x#5 = (byte) line_ydxd::x#1 [phi:line::@10->line_ydxd#3] -- register_copy 
+  //SEG138 [131] phi (byte) line_ydxd::xd#2 = (byte) line_ydxd::xd#1 [phi:line::@10->line_ydxd#4] -- register_copy 
+    jsr line_ydxd
+    jmp breturn
+  //SEG139 line::@9
+  b9:
+  //SEG140 [72] (byte) line::yd#10 ← (byte) line::y0#0 - (byte) line::y1#0 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1=zpby2_minus_xby 
+    stx $ff
+    lda y0
+    sec
+    sbc $ff
+    sta yd
+  //SEG141 [73] if((byte) line::yd#10>=(byte) line::xd#0) goto line::@13 [ line::x0#0 line::x1#0 line::y0#0 line::y1#0 line::xd#0 line::yd#10 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp xd
+    bcs b13
+  //SEG142 line::@27
+  //SEG143 [74] (byte) line_xdyi::x#1 ← (byte) line::x1#0 [ line::x0#0 line::y1#0 line::xd#0 line::yd#10 line_xdyi::x#1 ] -- zpby1=yby 
+    sty line_xdyi.x
+  //SEG144 [75] (byte) line_xdyi::y#1 ← (byte) line::y1#0 [ line::x0#0 line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 ] -- zpby1=xby 
+    stx line_xdyi.y
+  //SEG145 [76] (byte) line_xdyi::x1#1 ← (byte) line::x0#0 [ line::xd#0 line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 ] -- zpby1=zpby2 
+    lda x0
+    sta line_xdyi.x1
+  //SEG146 [77] (byte) line_xdyi::xd#1 ← (byte) line::xd#0 [ line::yd#10 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_xdyi.xd
+  //SEG147 [78] (byte) line_xdyi::yd#1 ← (byte) line::yd#10 [ line_xdyi::x#1 line_xdyi::y#1 line_xdyi::x1#1 line_xdyi::xd#1 line_xdyi::yd#1 ] -- zpby1=zpby2 
+    lda yd
+    sta line_xdyi.yd
+  //SEG148 [79] call line_xdyi param-assignment [ ]
+  //SEG149 [116] phi from line::@27 to line_xdyi [phi:line::@27->line_xdyi]
+  //SEG150 [116] phi (byte) line_xdyi::x1#6 = (byte) line_xdyi::x1#1 [phi:line::@27->line_xdyi#0] -- register_copy 
+  //SEG151 [116] phi (byte) line_xdyi::xd#5 = (byte) line_xdyi::xd#1 [phi:line::@27->line_xdyi#1] -- register_copy 
+  //SEG152 [116] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line::@27->line_xdyi#2] -- register_copy 
+  //SEG153 [116] phi (byte) line_xdyi::x#6 = (byte) line_xdyi::x#1 [phi:line::@27->line_xdyi#3] -- register_copy 
+  //SEG154 [116] phi (byte) line_xdyi::yd#2 = (byte) line_xdyi::yd#1 [phi:line::@27->line_xdyi#4] -- register_copy 
+    jsr line_xdyi
+    jmp breturn
+  //SEG155 line::@13
+  b13:
+  //SEG156 [80] (byte) line_ydxi::y#1 ← (byte) line::y1#0 [ line::x1#0 line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 ] -- zpby1=xby 
+    stx line_ydxi.y
+  //SEG157 [81] (byte) line_ydxi::x#1 ← (byte) line::x1#0 [ line::y0#0 line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 ] -- zpby1=yby 
+    sty line_ydxi.x
+  //SEG158 [82] (byte) line_ydxi::y1#1 ← (byte) line::y0#0 [ line::xd#0 line::yd#10 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 ] -- zpby1=zpby2 
+    lda y0
+    sta line_ydxi.y1
+  //SEG159 [83] (byte) line_ydxi::yd#1 ← (byte) line::yd#10 [ line::xd#0 line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 ]
+    // (byte) line_ydxi::yd#1 = (byte) line::yd#10  // register copy zp ZP_BYTE:4
+  //SEG160 [84] (byte) line_ydxi::xd#1 ← (byte) line::xd#0 [ line_ydxi::y#1 line_ydxi::x#1 line_ydxi::y1#1 line_ydxi::yd#1 line_ydxi::xd#1 ] -- zpby1=zpby2 
+    lda xd
+    sta line_ydxi.xd
+  //SEG161 [85] call line_ydxi param-assignment [ ]
+  //SEG162 [86] phi from line::@13 to line_ydxi [phi:line::@13->line_ydxi]
+  //SEG163 [86] phi (byte) line_ydxi::y1#6 = (byte) line_ydxi::y1#1 [phi:line::@13->line_ydxi#0] -- register_copy 
+  //SEG164 [86] phi (byte) line_ydxi::yd#5 = (byte) line_ydxi::yd#1 [phi:line::@13->line_ydxi#1] -- register_copy 
+  //SEG165 [86] phi (byte) line_ydxi::y#6 = (byte) line_ydxi::y#1 [phi:line::@13->line_ydxi#2] -- register_copy 
+  //SEG166 [86] phi (byte) line_ydxi::x#5 = (byte) line_ydxi::x#1 [phi:line::@13->line_ydxi#3] -- register_copy 
+  //SEG167 [86] phi (byte) line_ydxi::xd#2 = (byte) line_ydxi::xd#1 [phi:line::@13->line_ydxi#4] -- register_copy 
+    jsr line_ydxi
     jmp breturn
 }
-//SEG118 plot
+//SEG168 line_ydxi
+line_ydxi: {
+    .label y = 7
+    .label x = 6
+    .label y1 = 5
+    .label yd = 4
+    .label xd = 3
+    .label e = 8
+  //SEG169 [87] (byte) line_ydxi::e#0 ← (byte) line_ydxi::xd#2 >> (byte) 1 [ line_ydxi::xd#2 line_ydxi::x#5 line_ydxi::y#6 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG170 [88] phi from line_ydxi line_ydxi::@2 to line_ydxi::@1 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1]
+  //SEG171 [88] phi (byte) line_ydxi::e#3 = (byte) line_ydxi::e#0 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#0] -- register_copy 
+  //SEG172 [88] phi (byte) line_ydxi::y#3 = (byte) line_ydxi::y#6 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#1] -- register_copy 
+  //SEG173 [88] phi (byte) line_ydxi::x#3 = (byte) line_ydxi::x#5 [phi:line_ydxi/line_ydxi::@2->line_ydxi::@1#2] -- register_copy 
+  //SEG174 line_ydxi::@1
+  b1:
+  //SEG175 [89] (byte) plot::x#2 ← (byte) line_ydxi::x#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 ] -- xby=zpby1 
+    ldx x
+  //SEG176 [90] (byte) plot::y#2 ← (byte) line_ydxi::y#3 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 plot::x#2 plot::y#2 ] -- yby=zpby1 
+    ldy y
+  //SEG177 [91] call plot param-assignment [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#3 line_ydxi::e#3 ]
+  //SEG178 [101] phi from line_ydxi::@1 to plot [phi:line_ydxi::@1->plot]
+  //SEG179 [101] phi (byte) plot::y#4 = (byte) plot::y#2 [phi:line_ydxi::@1->plot#0] -- register_copy 
+  //SEG180 [101] phi (byte) plot::x#4 = (byte) plot::x#2 [phi:line_ydxi::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG181 line_ydxi::@5
+  //SEG182 [92] (byte) line_ydxi::y#2 ← (byte) line_ydxi::y#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::e#3 line_ydxi::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG183 [93] (byte) line_ydxi::e#1 ← (byte) line_ydxi::e#3 + (byte) line_ydxi::xd#2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG184 [94] if((byte) line_ydxi::yd#5>=(byte) line_ydxi::e#1) goto line_ydxi::@2 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#3 line_ydxi::y#2 line_ydxi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2
+  //SEG185 line_ydxi::@3
+  //SEG186 [95] (byte) line_ydxi::x#2 ← (byte) line_ydxi::x#3 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::e#1 line_ydxi::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG187 [96] (byte) line_ydxi::e#2 ← (byte) line_ydxi::e#1 - (byte) line_ydxi::yd#5 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::y#2 line_ydxi::x#2 line_ydxi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG188 [97] phi from line_ydxi::@3 line_ydxi::@5 to line_ydxi::@2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2]
+  //SEG189 [97] phi (byte) line_ydxi::e#6 = (byte) line_ydxi::e#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#0] -- register_copy 
+  //SEG190 [97] phi (byte) line_ydxi::x#6 = (byte) line_ydxi::x#2 [phi:line_ydxi::@3/line_ydxi::@5->line_ydxi::@2#1] -- register_copy 
+  //SEG191 line_ydxi::@2
+  b2:
+  //SEG192 [98] (byte~) line_ydxi::$8 ← (byte) line_ydxi::y1#6 + (byte) 1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 line_ydxi::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG193 [99] if((byte) line_ydxi::y#2<(byte~) line_ydxi::$8) goto line_ydxi::@1 [ line_ydxi::xd#2 line_ydxi::yd#5 line_ydxi::y1#6 line_ydxi::x#6 line_ydxi::y#2 line_ydxi::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1
+  //SEG194 line_ydxi::@return
+  //SEG195 [100] return  [ ]
+    rts
+}
+//SEG196 plot
 plot: {
-    .label _5 = 15
-    .label plotter_x = 6
-    .label plotter_y = 13
-    .label plotter = 6
-  //SEG119 [63] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::$0 ] -- aby=cowo1_staridx_xby 
+    .label _5 = 31
+    .label plotter_x = 27
+    .label plotter_y = 29
+    .label plotter = 27
+  //SEG197 [102] (byte~) plot::$0 ← (const byte[]) plot_xhi#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::$0 ] -- aby=cowo1_staridx_xby 
     lda plot_xhi,x
-  //SEG120 [64] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#9 plot::y#9 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG198 [103] (byte*) plot::plotter_x#1 ← (byte) 0 hi= (byte~) plot::$0 [ plot::x#4 plot::y#4 plot::plotter_x#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_x+1
     lda #<0
     sta plotter_x
-  //SEG121 [65] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#9 [ plot::x#9 plot::y#9 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
+  //SEG199 [104] (byte~) plot::$1 ← (const byte[]) plot_xlo#0 *idx (byte) plot::x#4 [ plot::x#4 plot::y#4 plot::plotter_x#1 plot::$1 ] -- aby=cowo1_staridx_xby 
     lda plot_xlo,x
-  //SEG122 [66] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#9 plot::y#9 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG200 [105] (byte*) plot::plotter_x#2 ← (byte*) plot::plotter_x#1 lo= (byte~) plot::$1 [ plot::x#4 plot::y#4 plot::plotter_x#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_x
-  //SEG123 [67] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#9 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
+  //SEG201 [106] (byte~) plot::$2 ← (const byte[]) plot_yhi#0 *idx (byte) plot::y#4 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::$2 ] -- aby=cowo1_staridx_yby 
     lda plot_yhi,y
-  //SEG124 [68] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#9 plot::y#9 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
+  //SEG202 [107] (byte*) plot::plotter_y#1 ← (byte) 0 hi= (byte~) plot::$2 [ plot::x#4 plot::y#4 plot::plotter_x#2 plot::plotter_y#1 ] -- zpptrby1=coby1_sethi_aby 
     sta plotter_y+1
     lda #<0
     sta plotter_y
-  //SEG125 [69] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#9 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
+  //SEG203 [108] (byte~) plot::$3 ← (const byte[]) plot_ylo#0 *idx (byte) plot::y#4 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#1 plot::$3 ] -- aby=cowo1_staridx_yby 
     lda plot_ylo,y
-  //SEG126 [70] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#9 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
+  //SEG204 [109] (byte*) plot::plotter_y#2 ← (byte*) plot::plotter_y#1 lo= (byte~) plot::$3 [ plot::x#4 plot::plotter_x#2 plot::plotter_y#2 ] -- zpptrby1=zpptrby1_setlo_aby 
     sta plotter_y
-  //SEG127 [71] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#9 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
+  //SEG205 [110] (byte*) plot::plotter#0 ← (byte*) plot::plotter_x#2 + (byte*) plot::plotter_y#2 [ plot::x#4 plot::plotter#0 ] -- zpptrby1=zpptrby1_plus_zpptrby2 
     lda plotter
     clc
     adc plotter_y
@@ -14370,159 +22431,285 @@ plot: {
     lda plotter+1
     adc plotter_y+1
     sta plotter+1
-  //SEG128 [72] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#9 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
+  //SEG206 [111] (byte~) plot::$5 ← * (byte*) plot::plotter#0 [ plot::x#4 plot::plotter#0 plot::$5 ] -- zpby1=_star_zpptrby1 
     ldy #0
     lda (plotter),y
     sta _5
-  //SEG129 [73] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#9 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
+  //SEG207 [112] (byte~) plot::$6 ← (const byte[]) plot_bit#0 *idx (byte) plot::x#4 [ plot::plotter#0 plot::$5 plot::$6 ] -- aby=cowo1_staridx_xby 
     lda plot_bit,x
-  //SEG130 [74] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
+  //SEG208 [113] (byte~) plot::$7 ← (byte~) plot::$5 | (byte~) plot::$6 [ plot::plotter#0 plot::$7 ] -- aby=zpby1_bor_aby 
     ora _5
-  //SEG131 [75] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
+  //SEG209 [114] *((byte*) plot::plotter#0) ← (byte~) plot::$7 [ ] -- _star_zpptrby1=aby 
     sta (plotter),y
-  //SEG132 plot::@return
-  //SEG133 [76] return  [ ]
+  //SEG210 plot::@return
+  //SEG211 [115] return  [ ]
     rts
 }
-//SEG134 line_xdyi
+//SEG212 line_xdyi
 line_xdyi: {
-    .label x = 3
-    .label y = 4
+    .label x = 12
+    .label y = 13
     .label x1 = 11
     .label xd = 10
-    .label yd = 12
-    .label e = 5
-  //SEG135 [77] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#0 >> (byte) 1 [ line_xdyi::x#0 line_xdyi::y#0 line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
+    .label yd = 9
+    .label e = 14
+  //SEG213 [117] (byte) line_xdyi::e#0 ← (byte) line_xdyi::yd#2 >> (byte) 1 [ line_xdyi::yd#2 line_xdyi::x#6 line_xdyi::y#5 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::e#0 ] -- zpby1=zpby2_ror_1 
     lda yd
     lsr
     sta e
-  //SEG136 [78] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
-  //SEG137 [78] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
-  //SEG138 [78] phi (byte) line_xdyi::y#2 = (byte) line_xdyi::y#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
-  //SEG139 [78] phi (byte) line_xdyi::x#2 = (byte) line_xdyi::x#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
-  //SEG140 line_xdyi::@1
+  //SEG214 [118] phi from line_xdyi line_xdyi::@2 to line_xdyi::@1 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1]
+  //SEG215 [118] phi (byte) line_xdyi::e#3 = (byte) line_xdyi::e#0 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#0] -- register_copy 
+  //SEG216 [118] phi (byte) line_xdyi::y#3 = (byte) line_xdyi::y#5 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#1] -- register_copy 
+  //SEG217 [118] phi (byte) line_xdyi::x#3 = (byte) line_xdyi::x#6 [phi:line_xdyi/line_xdyi::@2->line_xdyi::@1#2] -- register_copy 
+  //SEG218 line_xdyi::@1
   b1:
-  //SEG141 [79] (byte) plot::x#8 ← (byte) line_xdyi::x#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- xby=zpby1 
+  //SEG219 [119] (byte) plot::x#0 ← (byte) line_xdyi::x#3 [ plot::x#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- xby=zpby1 
     ldx x
-  //SEG142 [80] (byte) plot::y#8 ← (byte) line_xdyi::y#2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 plot::x#8 plot::y#8 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ] -- yby=zpby1 
+  //SEG220 [120] (byte) plot::y#0 ← (byte) line_xdyi::y#3 [ plot::x#0 plot::y#0 line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ] -- yby=zpby1 
     ldy y
-  //SEG143 [81] call plot param-assignment [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#3 ]
-  //SEG144 [62] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
-  //SEG145 [62] phi (byte) plot::y#9 = (byte) plot::y#8 [phi:line_xdyi::@1->plot#0] -- register_copy 
-  //SEG146 [62] phi (byte) plot::x#9 = (byte) plot::x#8 [phi:line_xdyi::@1->plot#1] -- register_copy 
+  //SEG221 [121] call plot param-assignment [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#3 line_xdyi::y#3 line_xdyi::e#3 ]
+  //SEG222 [101] phi from line_xdyi::@1 to plot [phi:line_xdyi::@1->plot]
+  //SEG223 [101] phi (byte) plot::y#4 = (byte) plot::y#0 [phi:line_xdyi::@1->plot#0] -- register_copy 
+  //SEG224 [101] phi (byte) plot::x#4 = (byte) plot::x#0 [phi:line_xdyi::@1->plot#1] -- register_copy 
     jsr plot
-  //SEG147 line_xdyi::@5
-  //SEG148 [82] (byte) line_xdyi::x#1 ← (byte) line_xdyi::x#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::e#3 line_xdyi::x#1 ] -- zpby1=zpby1_plus_1 
+  //SEG225 line_xdyi::@5
+  //SEG226 [122] (byte) line_xdyi::x#2 ← (byte) line_xdyi::x#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::e#3 line_xdyi::x#2 ] -- zpby1=zpby1_plus_1 
     inc x
-  //SEG149 [83] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
+  //SEG227 [123] (byte) line_xdyi::e#1 ← (byte) line_xdyi::e#3 + (byte) line_xdyi::yd#2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1=zpby1_plus_zpby2 
     lda e
     clc
     adc yd
     sta e
-  //SEG150 [84] if((byte) line_xdyi::xd#0>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::y#2 line_xdyi::x#1 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
+  //SEG228 [124] if((byte) line_xdyi::xd#5>=(byte) line_xdyi::e#1) goto line_xdyi::@2 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::y#3 line_xdyi::x#2 line_xdyi::e#1 ] -- zpby1_ge_zpby2_then_la1 
     lda xd
     cmp e
     bcs b2
-  //SEG151 line_xdyi::@3
-  //SEG152 [85] (byte) line_xdyi::y#1 ← (byte) line_xdyi::y#2 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::e#1 line_xdyi::y#1 ] -- zpby1=zpby1_plus_1 
+  //SEG229 line_xdyi::@3
+  //SEG230 [125] (byte) line_xdyi::y#2 ← (byte) line_xdyi::y#3 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::e#1 line_xdyi::y#2 ] -- zpby1=zpby1_plus_1 
     inc y
-  //SEG153 [86] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#0 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#1 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
+  //SEG231 [126] (byte) line_xdyi::e#2 ← (byte) line_xdyi::e#1 - (byte) line_xdyi::xd#5 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#2 line_xdyi::e#2 ] -- zpby1=zpby1_minus_zpby2 
     lda e
     sec
     sbc xd
     sta e
-  //SEG154 [87] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
-  //SEG155 [87] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
-  //SEG156 [87] phi (byte) line_xdyi::y#5 = (byte) line_xdyi::y#1 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
-  //SEG157 line_xdyi::@2
+  //SEG232 [127] phi from line_xdyi::@3 line_xdyi::@5 to line_xdyi::@2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2]
+  //SEG233 [127] phi (byte) line_xdyi::e#6 = (byte) line_xdyi::e#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#0] -- register_copy 
+  //SEG234 [127] phi (byte) line_xdyi::y#6 = (byte) line_xdyi::y#2 [phi:line_xdyi::@3/line_xdyi::@5->line_xdyi::@2#1] -- register_copy 
+  //SEG235 line_xdyi::@2
   b2:
-  //SEG158 [88] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#0 + (byte) 1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
+  //SEG236 [128] (byte~) line_xdyi::$8 ← (byte) line_xdyi::x1#6 + (byte) 1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 line_xdyi::$8 ] -- aby=zpby1_plus_1 
     lda x1
     clc
     adc #1
-  //SEG159 [89] if((byte) line_xdyi::x#1<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::x1#0 line_xdyi::xd#0 line_xdyi::yd#0 line_xdyi::x#1 line_xdyi::y#5 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
+  //SEG237 [129] if((byte) line_xdyi::x#2<(byte~) line_xdyi::$8) goto line_xdyi::@1 [ line_xdyi::yd#2 line_xdyi::xd#5 line_xdyi::x1#6 line_xdyi::x#2 line_xdyi::y#6 line_xdyi::e#6 ] -- zpby1_lt_aby_then_la1 
     cmp x
     bcs b1
-  //SEG160 line_xdyi::@return
-  //SEG161 [90] return  [ ]
+  //SEG238 line_xdyi::@return
+  //SEG239 [130] return  [ ]
     rts
 }
-//SEG162 init_plot_tables
+//SEG240 line_ydxd
+line_ydxd: {
+    .label y = 19
+    .label x = 18
+    .label y1 = 17
+    .label yd = 16
+    .label xd = 15
+    .label e = 20
+  //SEG241 [132] (byte) line_ydxd::e#0 ← (byte) line_ydxd::xd#2 >> (byte) 1 [ line_ydxd::xd#2 line_ydxd::x#5 line_ydxd::y#6 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda xd
+    lsr
+    sta e
+  //SEG242 [133] phi from line_ydxd line_ydxd::@2 to line_ydxd::@1 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1]
+  //SEG243 [133] phi (byte) line_ydxd::e#3 = (byte) line_ydxd::e#0 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#0] -- register_copy 
+  //SEG244 [133] phi (byte) line_ydxd::y#3 = (byte) line_ydxd::y#6 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#1] -- register_copy 
+  //SEG245 [133] phi (byte) line_ydxd::x#3 = (byte) line_ydxd::x#5 [phi:line_ydxd/line_ydxd::@2->line_ydxd::@1#2] -- register_copy 
+  //SEG246 line_ydxd::@1
+  b1:
+  //SEG247 [134] (byte) plot::x#3 ← (byte) line_ydxd::x#3 [ plot::x#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG248 [135] (byte) plot::y#3 ← (byte) line_ydxd::y#3 [ plot::x#3 plot::y#3 line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG249 [136] call plot param-assignment [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#3 line_ydxd::e#3 ]
+  //SEG250 [101] phi from line_ydxd::@1 to plot [phi:line_ydxd::@1->plot]
+  //SEG251 [101] phi (byte) plot::y#4 = (byte) plot::y#3 [phi:line_ydxd::@1->plot#0] -- register_copy 
+  //SEG252 [101] phi (byte) plot::x#4 = (byte) plot::x#3 [phi:line_ydxd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG253 line_ydxd::@5
+  //SEG254 [137] (byte) line_ydxd::y#2 ← (byte) line_ydxd::y#3 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::e#3 line_ydxd::y#2 ] -- zpby1=zpby1_plus_1 
+    inc y
+  //SEG255 [138] (byte) line_ydxd::e#1 ← (byte) line_ydxd::e#3 + (byte) line_ydxd::xd#2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc xd
+    sta e
+  //SEG256 [139] if((byte) line_ydxd::yd#5>=(byte) line_ydxd::e#1) goto line_ydxd::@2 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#3 line_ydxd::y#2 line_ydxd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda yd
+    cmp e
+    bcs b2
+  //SEG257 line_ydxd::@3
+  //SEG258 [140] (byte) line_ydxd::x#2 ← (byte) line_ydxd::x#3 - (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::e#1 line_ydxd::x#2 ] -- zpby1=zpby1_minus_1 
+    dec x
+  //SEG259 [141] (byte) line_ydxd::e#2 ← (byte) line_ydxd::e#1 - (byte) line_ydxd::yd#5 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::y#2 line_ydxd::x#2 line_ydxd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc yd
+    sta e
+  //SEG260 [142] phi from line_ydxd::@3 line_ydxd::@5 to line_ydxd::@2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2]
+  //SEG261 [142] phi (byte) line_ydxd::e#6 = (byte) line_ydxd::e#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#0] -- register_copy 
+  //SEG262 [142] phi (byte) line_ydxd::x#6 = (byte) line_ydxd::x#2 [phi:line_ydxd::@3/line_ydxd::@5->line_ydxd::@2#1] -- register_copy 
+  //SEG263 line_ydxd::@2
+  b2:
+  //SEG264 [143] (byte~) line_ydxd::$8 ← (byte) line_ydxd::y1#6 + (byte) 1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 line_ydxd::$8 ] -- aby=zpby1_plus_1 
+    lda y1
+    clc
+    adc #1
+  //SEG265 [144] if((byte) line_ydxd::y#2<(byte~) line_ydxd::$8) goto line_ydxd::@1 [ line_ydxd::xd#2 line_ydxd::yd#5 line_ydxd::y1#6 line_ydxd::x#6 line_ydxd::y#2 line_ydxd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp y
+    bcs b1
+  //SEG266 line_ydxd::@return
+  //SEG267 [145] return  [ ]
+    rts
+}
+//SEG268 line_xdyd
+line_xdyd: {
+    .label x = 24
+    .label y = 25
+    .label x1 = 23
+    .label xd = 22
+    .label yd = 21
+    .label e = 26
+  //SEG269 [147] (byte) line_xdyd::e#0 ← (byte) line_xdyd::yd#2 >> (byte) 1 [ line_xdyd::yd#2 line_xdyd::x#6 line_xdyd::y#5 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::e#0 ] -- zpby1=zpby2_ror_1 
+    lda yd
+    lsr
+    sta e
+  //SEG270 [148] phi from line_xdyd line_xdyd::@2 to line_xdyd::@1 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1]
+  //SEG271 [148] phi (byte) line_xdyd::e#3 = (byte) line_xdyd::e#0 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#0] -- register_copy 
+  //SEG272 [148] phi (byte) line_xdyd::y#3 = (byte) line_xdyd::y#5 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#1] -- register_copy 
+  //SEG273 [148] phi (byte) line_xdyd::x#3 = (byte) line_xdyd::x#6 [phi:line_xdyd/line_xdyd::@2->line_xdyd::@1#2] -- register_copy 
+  //SEG274 line_xdyd::@1
+  b1:
+  //SEG275 [149] (byte) plot::x#1 ← (byte) line_xdyd::x#3 [ plot::x#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- xby=zpby1 
+    ldx x
+  //SEG276 [150] (byte) plot::y#1 ← (byte) line_xdyd::y#3 [ plot::x#1 plot::y#1 line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ] -- yby=zpby1 
+    ldy y
+  //SEG277 [151] call plot param-assignment [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#3 line_xdyd::y#3 line_xdyd::e#3 ]
+  //SEG278 [101] phi from line_xdyd::@1 to plot [phi:line_xdyd::@1->plot]
+  //SEG279 [101] phi (byte) plot::y#4 = (byte) plot::y#1 [phi:line_xdyd::@1->plot#0] -- register_copy 
+  //SEG280 [101] phi (byte) plot::x#4 = (byte) plot::x#1 [phi:line_xdyd::@1->plot#1] -- register_copy 
+    jsr plot
+  //SEG281 line_xdyd::@5
+  //SEG282 [152] (byte) line_xdyd::x#2 ← (byte) line_xdyd::x#3 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::e#3 line_xdyd::x#2 ] -- zpby1=zpby1_plus_1 
+    inc x
+  //SEG283 [153] (byte) line_xdyd::e#1 ← (byte) line_xdyd::e#3 + (byte) line_xdyd::yd#2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1=zpby1_plus_zpby2 
+    lda e
+    clc
+    adc yd
+    sta e
+  //SEG284 [154] if((byte) line_xdyd::xd#5>=(byte) line_xdyd::e#1) goto line_xdyd::@2 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::y#3 line_xdyd::x#2 line_xdyd::e#1 ] -- zpby1_ge_zpby2_then_la1 
+    lda xd
+    cmp e
+    bcs b2
+  //SEG285 line_xdyd::@3
+  //SEG286 [155] (byte) line_xdyd::y#2 ← (byte) line_xdyd::y#3 - (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::e#1 line_xdyd::y#2 ] -- zpby1=zpby1_minus_1 
+    dec y
+  //SEG287 [156] (byte) line_xdyd::e#2 ← (byte) line_xdyd::e#1 - (byte) line_xdyd::xd#5 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#2 line_xdyd::e#2 ] -- zpby1=zpby1_minus_zpby2 
+    lda e
+    sec
+    sbc xd
+    sta e
+  //SEG288 [157] phi from line_xdyd::@3 line_xdyd::@5 to line_xdyd::@2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2]
+  //SEG289 [157] phi (byte) line_xdyd::e#6 = (byte) line_xdyd::e#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#0] -- register_copy 
+  //SEG290 [157] phi (byte) line_xdyd::y#6 = (byte) line_xdyd::y#2 [phi:line_xdyd::@3/line_xdyd::@5->line_xdyd::@2#1] -- register_copy 
+  //SEG291 line_xdyd::@2
+  b2:
+  //SEG292 [158] (byte~) line_xdyd::$8 ← (byte) line_xdyd::x1#6 + (byte) 1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 line_xdyd::$8 ] -- aby=zpby1_plus_1 
+    lda x1
+    clc
+    adc #1
+  //SEG293 [159] if((byte) line_xdyd::x#2<(byte~) line_xdyd::$8) goto line_xdyd::@1 [ line_xdyd::yd#2 line_xdyd::xd#5 line_xdyd::x1#6 line_xdyd::x#2 line_xdyd::y#6 line_xdyd::e#6 ] -- zpby1_lt_aby_then_la1 
+    cmp x
+    bcs b1
+  //SEG294 line_xdyd::@return
+  //SEG295 [160] return  [ ]
+    rts
+}
+//SEG296 init_plot_tables
 init_plot_tables: {
     .label _6 = 2
-    .label yoffs = 6
-  //SEG163 [92] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
-  //SEG164 [92] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
+    .label yoffs = 27
+  //SEG297 [162] phi from init_plot_tables to init_plot_tables::@1 [phi:init_plot_tables->init_plot_tables::@1]
+  //SEG298 [162] phi (byte) init_plot_tables::bit#3 = (byte) 128 [phi:init_plot_tables->init_plot_tables::@1#0] -- yby=coby1 
     ldy #$80
-  //SEG165 [92] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
+  //SEG299 [162] phi (byte) init_plot_tables::x#2 = (byte) 0 [phi:init_plot_tables->init_plot_tables::@1#1] -- xby=coby1 
     ldx #0
-  //SEG166 [92] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
-  //SEG167 [92] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
-  //SEG168 [92] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
-  //SEG169 init_plot_tables::@1
+  //SEG300 [162] phi from init_plot_tables::@2 to init_plot_tables::@1 [phi:init_plot_tables::@2->init_plot_tables::@1]
+  //SEG301 [162] phi (byte) init_plot_tables::bit#3 = (byte) init_plot_tables::bit#4 [phi:init_plot_tables::@2->init_plot_tables::@1#0] -- register_copy 
+  //SEG302 [162] phi (byte) init_plot_tables::x#2 = (byte) init_plot_tables::x#1 [phi:init_plot_tables::@2->init_plot_tables::@1#1] -- register_copy 
+  //SEG303 init_plot_tables::@1
   b1:
-  //SEG170 [93] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
+  //SEG304 [163] (byte~) init_plot_tables::$0 ← (byte) init_plot_tables::x#2 & (byte) 248 [ init_plot_tables::x#2 init_plot_tables::bit#3 init_plot_tables::$0 ] -- aby=xby_band_coby1 
     txa
     and #$f8
-  //SEG171 [94] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
+  //SEG305 [164] *((const byte[]) plot_xlo#0 + (byte) init_plot_tables::x#2) ← (byte~) init_plot_tables::$0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=aby 
     sta plot_xlo,x
-  //SEG172 [95] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
+  //SEG306 [165] *((const byte[]) plot_xhi#0 + (byte) init_plot_tables::x#2) ← >(const byte*) BITMAP#0 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=coby2 
     lda #>BITMAP
     sta plot_xhi,x
-  //SEG173 [96] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
+  //SEG307 [166] *((const byte[]) plot_bit#0 + (byte) init_plot_tables::x#2) ← (byte) init_plot_tables::bit#3 [ init_plot_tables::x#2 init_plot_tables::bit#3 ] -- cowo1_staridx_xby=yby 
     tya
     sta plot_bit,x
-  //SEG174 [97] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
+  //SEG308 [167] (byte) init_plot_tables::bit#1 ← (byte) init_plot_tables::bit#3 >> (byte) 1 [ init_plot_tables::x#2 init_plot_tables::bit#1 ] -- yby=yby_ror_1 
     tya
     lsr
     tay
-  //SEG175 [98] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
+  //SEG309 [168] if((byte) init_plot_tables::bit#1!=(byte) 0) goto init_plot_tables::@10 [ init_plot_tables::x#2 ] -- yby_neq_0_then_la1 
     cpy #0
     bne b10
-  //SEG176 [99] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
-  //SEG177 [99] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
+  //SEG310 [169] phi from init_plot_tables::@1 to init_plot_tables::@2 [phi:init_plot_tables::@1->init_plot_tables::@2]
+  //SEG311 [169] phi (byte) init_plot_tables::bit#4 = (byte) 128 [phi:init_plot_tables::@1->init_plot_tables::@2#0] -- yby=coby1 
     ldy #$80
-  //SEG178 init_plot_tables::@2
+  //SEG312 init_plot_tables::@2
   b2:
-  //SEG179 [100] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
+  //SEG313 [170] (byte) init_plot_tables::x#1 ← ++ (byte) init_plot_tables::x#2 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby=_inc_xby 
     inx
-  //SEG180 [101] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
+  //SEG314 [171] if((byte) init_plot_tables::x#1!=(byte) 0) goto init_plot_tables::@1 [ init_plot_tables::x#1 init_plot_tables::bit#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b1
-  //SEG181 [102] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
-  //SEG182 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
+  //SEG315 [172] phi from init_plot_tables::@2 to init_plot_tables::@3 [phi:init_plot_tables::@2->init_plot_tables::@3]
+  //SEG316 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#0] -- zpptrby1=coby1 
     lda #0
     sta yoffs
     sta yoffs+1
-  //SEG183 [102] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
+  //SEG317 [172] phi (byte) init_plot_tables::y#2 = (byte) 0 [phi:init_plot_tables::@2->init_plot_tables::@3#1] -- xby=coby1 
     ldx #0
-  //SEG184 [102] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
-  //SEG185 [102] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
-  //SEG186 [102] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
-  //SEG187 init_plot_tables::@3
+  //SEG318 [172] phi from init_plot_tables::@4 to init_plot_tables::@3 [phi:init_plot_tables::@4->init_plot_tables::@3]
+  //SEG319 [172] phi (byte*) init_plot_tables::yoffs#2 = (byte*) init_plot_tables::yoffs#4 [phi:init_plot_tables::@4->init_plot_tables::@3#0] -- register_copy 
+  //SEG320 [172] phi (byte) init_plot_tables::y#2 = (byte) init_plot_tables::y#1 [phi:init_plot_tables::@4->init_plot_tables::@3#1] -- register_copy 
+  //SEG321 init_plot_tables::@3
   b3:
-  //SEG188 [103] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
+  //SEG322 [173] (byte~) init_plot_tables::$6 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 ] -- zpby1=xby_band_coby1 
     txa
     and #7
     sta _6
-  //SEG189 [104] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
+  //SEG323 [174] (byte~) init_plot_tables::$7 ← < (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$6 init_plot_tables::$7 ] -- aby=_lo_zpptrby1 
     lda yoffs
-  //SEG190 [105] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
+  //SEG324 [175] (byte~) init_plot_tables::$8 ← (byte~) init_plot_tables::$6 | (byte~) init_plot_tables::$7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$8 ] -- aby=zpby1_bor_aby 
     ora _6
-  //SEG191 [106] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG325 [176] *((const byte[]) plot_ylo#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$8 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_ylo,x
-  //SEG192 [107] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
+  //SEG326 [177] (byte~) init_plot_tables::$9 ← > (byte*) init_plot_tables::yoffs#2 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$9 ] -- aby=_hi_zpptrby1 
     lda yoffs+1
-  //SEG193 [108] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
+  //SEG327 [178] *((const byte[]) plot_yhi#0 + (byte) init_plot_tables::y#2) ← (byte~) init_plot_tables::$9 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- cowo1_staridx_xby=aby 
     sta plot_yhi,x
-  //SEG194 [109] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
+  //SEG328 [179] (byte~) init_plot_tables::$10 ← (byte) init_plot_tables::y#2 & (byte) 7 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 init_plot_tables::$10 ] -- aby=xby_band_coby1 
     txa
     and #7
-  //SEG195 [110] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
+  //SEG329 [180] if((byte~) init_plot_tables::$10!=(byte) 7) goto init_plot_tables::@4 [ init_plot_tables::y#2 init_plot_tables::yoffs#2 ] -- aby_neq_coby1_then_la1 
     cmp #7
     bne b4
-  //SEG196 init_plot_tables::@7
-  //SEG197 [111] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
+  //SEG330 init_plot_tables::@7
+  //SEG331 [181] (byte*) init_plot_tables::yoffs#1 ← (byte*) init_plot_tables::yoffs#2 + (word) 320 [ init_plot_tables::y#2 init_plot_tables::yoffs#1 ] -- zpptrby1=zpptrby1_plus_cowo1 
     lda yoffs
     clc
     adc #<$140
@@ -14530,82 +22717,82 @@ init_plot_tables: {
     lda yoffs+1
     adc #>$140
     sta yoffs+1
-  //SEG198 [112] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
-  //SEG199 [112] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
-  //SEG200 init_plot_tables::@4
+  //SEG332 [182] phi from init_plot_tables::@3 init_plot_tables::@7 to init_plot_tables::@4 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4]
+  //SEG333 [182] phi (byte*) init_plot_tables::yoffs#4 = (byte*) init_plot_tables::yoffs#2 [phi:init_plot_tables::@3/init_plot_tables::@7->init_plot_tables::@4#0] -- register_copy 
+  //SEG334 init_plot_tables::@4
   b4:
-  //SEG201 [113] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
+  //SEG335 [183] (byte) init_plot_tables::y#1 ← ++ (byte) init_plot_tables::y#2 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby=_inc_xby 
     inx
-  //SEG202 [114] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
+  //SEG336 [184] if((byte) init_plot_tables::y#1!=(byte) 0) goto init_plot_tables::@3 [ init_plot_tables::y#1 init_plot_tables::yoffs#4 ] -- xby_neq_0_then_la1 
     cpx #0
     bne b3
-  //SEG203 init_plot_tables::@return
-  //SEG204 [115] return  [ ]
+  //SEG337 init_plot_tables::@return
+  //SEG338 [185] return  [ ]
     rts
-  //SEG205 init_plot_tables::@10
+  //SEG339 init_plot_tables::@10
   b10:
-  //SEG206 [99] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
-  //SEG207 [99] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
+  //SEG340 [169] phi from init_plot_tables::@10 to init_plot_tables::@2 [phi:init_plot_tables::@10->init_plot_tables::@2]
+  //SEG341 [169] phi (byte) init_plot_tables::bit#4 = (byte) init_plot_tables::bit#1 [phi:init_plot_tables::@10->init_plot_tables::@2#0] -- register_copy 
     jmp b2
 }
-//SEG208 init_screen
+//SEG342 init_screen
 init_screen: {
-    .label b = 6
-    .label c = 6
-  //SEG209 [117] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
-  //SEG210 [117] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
+    .label b = 27
+    .label c = 27
+  //SEG343 [187] phi from init_screen to init_screen::@1 [phi:init_screen->init_screen::@1]
+  //SEG344 [187] phi (byte*) init_screen::b#2 = (const byte*) BITMAP#0 [phi:init_screen->init_screen::@1#0] -- zpptrby1=cowo1 
     lda #<BITMAP
     sta b
     lda #>BITMAP
     sta b+1
-  //SEG211 [117] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
-  //SEG212 [117] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
-  //SEG213 init_screen::@1
+  //SEG345 [187] phi from init_screen::@1 to init_screen::@1 [phi:init_screen::@1->init_screen::@1]
+  //SEG346 [187] phi (byte*) init_screen::b#2 = (byte*) init_screen::b#1 [phi:init_screen::@1->init_screen::@1#0] -- register_copy 
+  //SEG347 init_screen::@1
   b1:
-  //SEG214 [118] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
+  //SEG348 [188] *((byte*) init_screen::b#2) ← (byte) 0 [ init_screen::b#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #0
     sta (b),y
-  //SEG215 [119] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG349 [189] (byte*) init_screen::b#1 ← ++ (byte*) init_screen::b#2 [ init_screen::b#1 ] -- zpptrby1=_inc_zpptrby1 
     inc b
     bne !+
     inc b+1
   !:
-  //SEG216 [120] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG350 [190] if((byte*) init_screen::b#1!=(const byte*) BITMAP#0+(word) 8192) goto init_screen::@1 [ init_screen::b#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda b+1
     cmp #>BITMAP+$2000
     bne b1
     lda b
     cmp #<BITMAP+$2000
     bne b1
-  //SEG217 [121] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
-  //SEG218 [121] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
+  //SEG351 [191] phi from init_screen::@1 to init_screen::@2 [phi:init_screen::@1->init_screen::@2]
+  //SEG352 [191] phi (byte*) init_screen::c#2 = (const byte*) SCREEN#0 [phi:init_screen::@1->init_screen::@2#0] -- zpptrby1=cowo1 
     lda #<SCREEN
     sta c
     lda #>SCREEN
     sta c+1
-  //SEG219 [121] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
-  //SEG220 [121] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
-  //SEG221 init_screen::@2
+  //SEG353 [191] phi from init_screen::@2 to init_screen::@2 [phi:init_screen::@2->init_screen::@2]
+  //SEG354 [191] phi (byte*) init_screen::c#2 = (byte*) init_screen::c#1 [phi:init_screen::@2->init_screen::@2#0] -- register_copy 
+  //SEG355 init_screen::@2
   b2:
-  //SEG222 [122] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
+  //SEG356 [192] *((byte*) init_screen::c#2) ← (byte) 20 [ init_screen::c#2 ] -- _star_zpptrby1=coby1 
     ldy #0
     lda #$14
     sta (c),y
-  //SEG223 [123] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
+  //SEG357 [193] (byte*) init_screen::c#1 ← ++ (byte*) init_screen::c#2 [ init_screen::c#1 ] -- zpptrby1=_inc_zpptrby1 
     inc c
     bne !+
     inc c+1
   !:
-  //SEG224 [124] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
+  //SEG358 [194] if((byte*) init_screen::c#1!=(const byte*) SCREEN#0+(word) 1024) goto init_screen::@2 [ init_screen::c#1 ] -- zpptrby1_neq_cowo1_then_la1 
     lda c+1
     cmp #>SCREEN+$400
     bne b2
     lda c
     cmp #<SCREEN+$400
     bne b2
-  //SEG225 init_screen::@return
-  //SEG226 [125] return  [ ]
+  //SEG359 init_screen::@return
+  //SEG360 [195] return  [ ]
     rts
 }
 
diff --git a/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.sym b/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.sym
index 4cf208d70..2c2f14868 100644
--- a/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.sym
+++ b/src/main/java/dk/camelot64/kickc/test/ref/bitmap-bresenham.sym
@@ -1,4 +1,4 @@
-(label) @7
+(label) @10
 (label) @begin
 (label) @end
 (byte*) BGCOL
@@ -58,46 +58,89 @@
 (byte) init_plot_tables::y#1 reg byte x 16.5
 (byte) init_plot_tables::y#2 reg byte x 6.0
 (byte*) init_plot_tables::yoffs
-(byte*) init_plot_tables::yoffs#1 yoffs zp ZP_PTR_BYTE:6 22.0
-(byte*) init_plot_tables::yoffs#2 yoffs zp ZP_PTR_BYTE:6 6.111111111111112
-(byte*) init_plot_tables::yoffs#4 yoffs zp ZP_PTR_BYTE:6 11.0
+(byte*) init_plot_tables::yoffs#1 yoffs zp ZP_PTR_BYTE:27 22.0
+(byte*) init_plot_tables::yoffs#2 yoffs zp ZP_PTR_BYTE:27 6.111111111111112
+(byte*) init_plot_tables::yoffs#4 yoffs zp ZP_PTR_BYTE:27 11.0
 (void()) init_screen()
 (label) init_screen::@1
 (label) init_screen::@2
 (label) init_screen::@return
 (byte*) init_screen::b
-(byte*) init_screen::b#1 b zp ZP_PTR_BYTE:6 16.5
-(byte*) init_screen::b#2 b zp ZP_PTR_BYTE:6 16.5
+(byte*) init_screen::b#1 b zp ZP_PTR_BYTE:27 16.5
+(byte*) init_screen::b#2 b zp ZP_PTR_BYTE:27 16.5
 (byte*) init_screen::c
-(byte*) init_screen::c#1 c zp ZP_PTR_BYTE:6 16.5
-(byte*) init_screen::c#2 c zp ZP_PTR_BYTE:6 16.5
+(byte*) init_screen::c#1 c zp ZP_PTR_BYTE:27 16.5
+(byte*) init_screen::c#2 c zp ZP_PTR_BYTE:27 16.5
 (void()) line((byte) line::x0 , (byte) line::x1 , (byte) line::y0 , (byte) line::y1)
 (label) line::@1
 (label) line::@10
-(label) line::@11
+(label) line::@13
 (label) line::@15
+(label) line::@16
 (label) line::@17
-(label) line::@19
 (label) line::@2
-(label) line::@22
+(label) line::@20
+(label) line::@23
 (label) line::@24
+(label) line::@27
 (label) line::@3
-(label) line::@7
+(label) line::@6
 (label) line::@9
 (label) line::@return
 (byte) line::x0
-(byte) line::x0#0 x0 zp ZP_BYTE:5 10.636363636363635
+(byte) line::x0#0 x0 zp ZP_BYTE:5 5.173913043478264
 (byte) line::x1
-(byte) line::x1#0 x1 zp ZP_BYTE:8 4.874999999999997
+(byte) line::x1#0 reg byte y 5.409090909090908
 (byte) line::xd
-(byte) line::xd#0 reg byte a 20.0
-(byte) line::xd#1 xd zp ZP_BYTE:10 0.8571428571428571
+(byte) line::xd#0 xd zp ZP_BYTE:8 0.7
+(byte) line::xd#1 xd zp ZP_BYTE:8 0.7
 (byte) line::y0
-(byte) line::y0#0 reg byte y 8.357142857142858
+(byte) line::y0#0 y0 zp ZP_BYTE:3 5.952380952380948
 (byte) line::y1
-(byte) line::y1#0 y1 zp ZP_BYTE:9 4.791666666666664
+(byte) line::y1#0 reg byte x 6.249999999999996
 (byte) line::yd
-(byte) line::yd#0 reg byte x 1.0
+(byte) line::yd#0 yd zp ZP_BYTE:4 0.8888888888888888
+(byte) line::yd#1 yd zp ZP_BYTE:4 0.8888888888888888
+(byte) line::yd#10 yd zp ZP_BYTE:4 0.8888888888888888
+(byte) line::yd#3 yd zp ZP_BYTE:4 0.8888888888888888
+(void()) line_xdyd((byte) line_xdyd::x , (byte) line_xdyd::y , (byte) line_xdyd::x1 , (byte) line_xdyd::xd , (byte) line_xdyd::yd)
+(byte~) line_xdyd::$8 reg byte a 22.0
+(label) line_xdyd::@1
+(label) line_xdyd::@2
+(label) line_xdyd::@3
+(label) line_xdyd::@5
+(label) line_xdyd::@return
+(byte) line_xdyd::e
+(byte) line_xdyd::e#0 e zp ZP_BYTE:26 4.0
+(byte) line_xdyd::e#1 e zp ZP_BYTE:26 14.666666666666666
+(byte) line_xdyd::e#2 e zp ZP_BYTE:26 22.0
+(byte) line_xdyd::e#3 e zp ZP_BYTE:26 4.800000000000001
+(byte) line_xdyd::e#6 e zp ZP_BYTE:26 11.0
+(byte) line_xdyd::x
+(byte) line_xdyd::x#0 x zp ZP_BYTE:24 0.8
+(byte) line_xdyd::x#1 x zp ZP_BYTE:24 0.8
+(byte) line_xdyd::x#2 x zp ZP_BYTE:24 4.125
+(byte) line_xdyd::x#3 x zp ZP_BYTE:24 8.75
+(byte) line_xdyd::x#6 x zp ZP_BYTE:24 3.0
+(byte) line_xdyd::x1
+(byte) line_xdyd::x1#0 x1 zp ZP_BYTE:23 1.3333333333333333
+(byte) line_xdyd::x1#1 x1 zp ZP_BYTE:23 1.3333333333333333
+(byte) line_xdyd::x1#6 x1 zp ZP_BYTE:23 1.0714285714285714
+(byte) line_xdyd::xd
+(byte) line_xdyd::xd#0 xd zp ZP_BYTE:22 2.0
+(byte) line_xdyd::xd#1 xd zp ZP_BYTE:22 2.0
+(byte) line_xdyd::xd#5 xd zp ZP_BYTE:22 1.8571428571428572
+(byte) line_xdyd::y
+(byte) line_xdyd::y#0 y zp ZP_BYTE:25 1.0
+(byte) line_xdyd::y#1 y zp ZP_BYTE:25 1.0
+(byte) line_xdyd::y#2 y zp ZP_BYTE:25 11.0
+(byte) line_xdyd::y#3 y zp ZP_BYTE:25 6.571428571428571
+(byte) line_xdyd::y#5 y zp ZP_BYTE:25 3.0
+(byte) line_xdyd::y#6 y zp ZP_BYTE:25 11.0
+(byte) line_xdyd::yd
+(byte) line_xdyd::yd#0 yd zp ZP_BYTE:21 4.0
+(byte) line_xdyd::yd#1 yd zp ZP_BYTE:21 4.0
+(byte) line_xdyd::yd#2 yd zp ZP_BYTE:21 1.2142857142857142
 (void()) line_xdyi((byte) line_xdyi::x , (byte) line_xdyi::y , (byte) line_xdyi::x1 , (byte) line_xdyi::xd , (byte) line_xdyi::yd)
 (byte~) line_xdyi::$8 reg byte a 22.0
 (label) line_xdyi::@1
@@ -106,26 +149,112 @@
 (label) line_xdyi::@5
 (label) line_xdyi::@return
 (byte) line_xdyi::e
-(byte) line_xdyi::e#0 e zp ZP_BYTE:5 4.0
-(byte) line_xdyi::e#1 e zp ZP_BYTE:5 14.666666666666666
-(byte) line_xdyi::e#2 e zp ZP_BYTE:5 22.0
-(byte) line_xdyi::e#3 e zp ZP_BYTE:5 4.800000000000001
-(byte) line_xdyi::e#6 e zp ZP_BYTE:5 11.0
+(byte) line_xdyi::e#0 e zp ZP_BYTE:14 4.0
+(byte) line_xdyi::e#1 e zp ZP_BYTE:14 14.666666666666666
+(byte) line_xdyi::e#2 e zp ZP_BYTE:14 22.0
+(byte) line_xdyi::e#3 e zp ZP_BYTE:14 4.800000000000001
+(byte) line_xdyi::e#6 e zp ZP_BYTE:14 11.0
 (byte) line_xdyi::x
-(byte) line_xdyi::x#0 x zp ZP_BYTE:3 0.6666666666666666
-(byte) line_xdyi::x#1 x zp ZP_BYTE:3 4.125
-(byte) line_xdyi::x#2 x zp ZP_BYTE:3 8.75
+(byte) line_xdyi::x#0 x zp ZP_BYTE:12 0.8
+(byte) line_xdyi::x#1 x zp ZP_BYTE:12 0.8
+(byte) line_xdyi::x#2 x zp ZP_BYTE:12 4.125
+(byte) line_xdyi::x#3 x zp ZP_BYTE:12 8.75
+(byte) line_xdyi::x#6 x zp ZP_BYTE:12 3.0
 (byte) line_xdyi::x1
-(byte) line_xdyi::x1#0 x1 zp ZP_BYTE:11 0.8125
+(byte) line_xdyi::x1#0 x1 zp ZP_BYTE:11 1.3333333333333333
+(byte) line_xdyi::x1#1 x1 zp ZP_BYTE:11 1.3333333333333333
+(byte) line_xdyi::x1#6 x1 zp ZP_BYTE:11 1.0714285714285714
 (byte) line_xdyi::xd
-(byte) line_xdyi::xd#0 xd zp ZP_BYTE:10 1.5999999999999999
+(byte) line_xdyi::xd#0 xd zp ZP_BYTE:10 2.0
+(byte) line_xdyi::xd#1 xd zp ZP_BYTE:10 2.0
+(byte) line_xdyi::xd#5 xd zp ZP_BYTE:10 1.8571428571428572
 (byte) line_xdyi::y
-(byte) line_xdyi::y#0 y zp ZP_BYTE:4 0.8
-(byte) line_xdyi::y#1 y zp ZP_BYTE:4 11.0
-(byte) line_xdyi::y#2 y zp ZP_BYTE:4 6.571428571428571
-(byte) line_xdyi::y#5 y zp ZP_BYTE:4 11.0
+(byte) line_xdyi::y#0 y zp ZP_BYTE:13 1.0
+(byte) line_xdyi::y#1 y zp ZP_BYTE:13 1.0
+(byte) line_xdyi::y#2 y zp ZP_BYTE:13 11.0
+(byte) line_xdyi::y#3 y zp ZP_BYTE:13 6.571428571428571
+(byte) line_xdyi::y#5 y zp ZP_BYTE:13 3.0
+(byte) line_xdyi::y#6 y zp ZP_BYTE:13 11.0
 (byte) line_xdyi::yd
-(byte) line_xdyi::yd#0 yd zp ZP_BYTE:12 1.0714285714285714
+(byte) line_xdyi::yd#0 yd zp ZP_BYTE:9 4.0
+(byte) line_xdyi::yd#1 yd zp ZP_BYTE:9 4.0
+(byte) line_xdyi::yd#2 yd zp ZP_BYTE:9 1.2142857142857142
+(void()) line_ydxd((byte) line_ydxd::y , (byte) line_ydxd::x , (byte) line_ydxd::y1 , (byte) line_ydxd::yd , (byte) line_ydxd::xd)
+(byte~) line_ydxd::$8 reg byte a 22.0
+(label) line_ydxd::@1
+(label) line_ydxd::@2
+(label) line_ydxd::@3
+(label) line_ydxd::@5
+(label) line_ydxd::@return
+(byte) line_ydxd::e
+(byte) line_ydxd::e#0 e zp ZP_BYTE:20 4.0
+(byte) line_ydxd::e#1 e zp ZP_BYTE:20 14.666666666666666
+(byte) line_ydxd::e#2 e zp ZP_BYTE:20 22.0
+(byte) line_ydxd::e#3 e zp ZP_BYTE:20 4.800000000000001
+(byte) line_ydxd::e#6 e zp ZP_BYTE:20 11.0
+(byte) line_ydxd::x
+(byte) line_ydxd::x#0 x zp ZP_BYTE:18 1.0
+(byte) line_ydxd::x#1 x zp ZP_BYTE:18 1.0
+(byte) line_ydxd::x#2 x zp ZP_BYTE:18 11.0
+(byte) line_ydxd::x#3 x zp ZP_BYTE:18 6.571428571428571
+(byte) line_ydxd::x#5 x zp ZP_BYTE:18 3.0
+(byte) line_ydxd::x#6 x zp ZP_BYTE:18 11.0
+(byte) line_ydxd::xd
+(byte) line_ydxd::xd#0 xd zp ZP_BYTE:15 4.0
+(byte) line_ydxd::xd#1 xd zp ZP_BYTE:15 4.0
+(byte) line_ydxd::xd#2 xd zp ZP_BYTE:15 1.2142857142857142
+(byte) line_ydxd::y
+(byte) line_ydxd::y#0 y zp ZP_BYTE:19 0.8
+(byte) line_ydxd::y#1 y zp ZP_BYTE:19 0.8
+(byte) line_ydxd::y#2 y zp ZP_BYTE:19 4.125
+(byte) line_ydxd::y#3 y zp ZP_BYTE:19 8.75
+(byte) line_ydxd::y#6 y zp ZP_BYTE:19 3.0
+(byte) line_ydxd::y1
+(byte) line_ydxd::y1#0 y1 zp ZP_BYTE:17 1.3333333333333333
+(byte) line_ydxd::y1#1 y1 zp ZP_BYTE:17 1.3333333333333333
+(byte) line_ydxd::y1#6 y1 zp ZP_BYTE:17 1.0714285714285714
+(byte) line_ydxd::yd
+(byte) line_ydxd::yd#0 yd zp ZP_BYTE:16 2.0
+(byte) line_ydxd::yd#1 yd zp ZP_BYTE:16 2.0
+(byte) line_ydxd::yd#5 yd zp ZP_BYTE:16 1.8571428571428572
+(void()) line_ydxi((byte) line_ydxi::y , (byte) line_ydxi::x , (byte) line_ydxi::y1 , (byte) line_ydxi::yd , (byte) line_ydxi::xd)
+(byte~) line_ydxi::$8 reg byte a 22.0
+(label) line_ydxi::@1
+(label) line_ydxi::@2
+(label) line_ydxi::@3
+(label) line_ydxi::@5
+(label) line_ydxi::@return
+(byte) line_ydxi::e
+(byte) line_ydxi::e#0 e zp ZP_BYTE:8 4.0
+(byte) line_ydxi::e#1 e zp ZP_BYTE:8 14.666666666666666
+(byte) line_ydxi::e#2 e zp ZP_BYTE:8 22.0
+(byte) line_ydxi::e#3 e zp ZP_BYTE:8 4.800000000000001
+(byte) line_ydxi::e#6 e zp ZP_BYTE:8 11.0
+(byte) line_ydxi::x
+(byte) line_ydxi::x#0 x zp ZP_BYTE:6 1.0
+(byte) line_ydxi::x#1 x zp ZP_BYTE:6 1.0
+(byte) line_ydxi::x#2 x zp ZP_BYTE:6 11.0
+(byte) line_ydxi::x#3 x zp ZP_BYTE:6 6.571428571428571
+(byte) line_ydxi::x#5 x zp ZP_BYTE:6 3.0
+(byte) line_ydxi::x#6 x zp ZP_BYTE:6 11.0
+(byte) line_ydxi::xd
+(byte) line_ydxi::xd#0 xd zp ZP_BYTE:3 4.0
+(byte) line_ydxi::xd#1 xd zp ZP_BYTE:3 4.0
+(byte) line_ydxi::xd#2 xd zp ZP_BYTE:3 1.2142857142857142
+(byte) line_ydxi::y
+(byte) line_ydxi::y#0 y zp ZP_BYTE:7 0.8
+(byte) line_ydxi::y#1 y zp ZP_BYTE:7 0.8
+(byte) line_ydxi::y#2 y zp ZP_BYTE:7 4.125
+(byte) line_ydxi::y#3 y zp ZP_BYTE:7 8.75
+(byte) line_ydxi::y#6 y zp ZP_BYTE:7 3.0
+(byte) line_ydxi::y1
+(byte) line_ydxi::y1#0 y1 zp ZP_BYTE:5 1.3333333333333333
+(byte) line_ydxi::y1#1 y1 zp ZP_BYTE:5 1.3333333333333333
+(byte) line_ydxi::y1#6 y1 zp ZP_BYTE:5 1.0714285714285714
+(byte) line_ydxi::yd
+(byte) line_ydxi::yd#0 yd zp ZP_BYTE:4 2.0
+(byte) line_ydxi::yd#1 yd zp ZP_BYTE:4 2.0
+(byte) line_ydxi::yd#5 yd zp ZP_BYTE:4 1.8571428571428572
 (void()) lines()
 (byte~) lines::$0 reg byte y 50.5
 (byte~) lines::$2 $2 zp ZP_BYTE:3 50.5
@@ -153,40 +282,30 @@
 (byte~) plot::$1 reg byte a 4.0
 (byte~) plot::$2 reg byte a 4.0
 (byte~) plot::$3 reg byte a 4.0
-(byte~) plot::$5 $5 zp ZP_BYTE:15 2.0
+(byte~) plot::$5 $5 zp ZP_BYTE:31 2.0
 (byte~) plot::$6 reg byte a 4.0
 (byte~) plot::$7 reg byte a 4.0
 (label) plot::@return
 (byte*) plot::plotter
-(byte*) plot::plotter#0 plotter zp ZP_PTR_BYTE:6 1.5
+(byte*) plot::plotter#0 plotter zp ZP_PTR_BYTE:27 1.5
 (byte*) plot::plotter_x
-(byte*) plot::plotter_x#1 plotter_x zp ZP_PTR_BYTE:6 2.0
-(byte*) plot::plotter_x#2 plotter_x zp ZP_PTR_BYTE:6 0.8
+(byte*) plot::plotter_x#1 plotter_x zp ZP_PTR_BYTE:27 2.0
+(byte*) plot::plotter_x#2 plotter_x zp ZP_PTR_BYTE:27 0.8
 (byte*) plot::plotter_y
-(byte*) plot::plotter_y#1 plotter_y zp ZP_PTR_BYTE:13 2.0
-(byte*) plot::plotter_y#2 plotter_y zp ZP_PTR_BYTE:13 4.0
+(byte*) plot::plotter_y#1 plotter_y zp ZP_PTR_BYTE:29 2.0
+(byte*) plot::plotter_y#2 plotter_y zp ZP_PTR_BYTE:29 4.0
 (byte) plot::x
-(byte) plot::x#0 reg byte x 2.0
-(byte) plot::x#1 reg byte x 2.0
-(byte) plot::x#2 reg byte x 2.0
-(byte) plot::x#3 reg byte x 2.0
-(byte) plot::x#4 reg byte x 2.0
-(byte) plot::x#5 reg byte x 2.0
-(byte) plot::x#6 reg byte x 2.0
-(byte) plot::x#7 reg byte x 2.0
-(byte) plot::x#8 reg byte x 11.0
-(byte) plot::x#9 reg byte x 3.0
+(byte) plot::x#0 reg byte x 11.0
+(byte) plot::x#1 reg byte x 11.0
+(byte) plot::x#2 reg byte x 11.0
+(byte) plot::x#3 reg byte x 11.0
+(byte) plot::x#4 reg byte x 4.545454545454545
 (byte) plot::y
-(byte) plot::y#0 reg byte y 4.0
-(byte) plot::y#1 reg byte y 4.0
-(byte) plot::y#2 reg byte y 4.0
-(byte) plot::y#3 reg byte y 4.0
-(byte) plot::y#4 reg byte y 4.0
-(byte) plot::y#5 reg byte y 4.0
-(byte) plot::y#6 reg byte y 4.0
-(byte) plot::y#7 reg byte y 4.0
-(byte) plot::y#8 reg byte y 22.0
-(byte) plot::y#9 reg byte y 4.428571428571428
+(byte) plot::y#0 reg byte y 22.0
+(byte) plot::y#1 reg byte y 22.0
+(byte) plot::y#2 reg byte y 22.0
+(byte) plot::y#3 reg byte y 22.0
+(byte) plot::y#4 reg byte y 6.857142857142857
 (byte[]) plot_bit
 (const byte[]) plot_bit#0 plot_bit = (word) 5120
 (byte[]) plot_xhi
@@ -199,34 +318,52 @@
 (const byte[]) plot_ylo#0 plot_ylo = (word) 4608
 
 zp ZP_BYTE:2 [ lines::l#2 lines::l#1 init_plot_tables::$6 ]
-reg byte x [ plot::x#9 plot::x#6 plot::x#1 plot::x#3 plot::x#0 plot::x#5 plot::x#7 plot::x#2 plot::x#4 plot::x#8 ]
-reg byte y [ plot::y#9 plot::y#6 plot::y#1 plot::y#3 plot::y#0 plot::y#5 plot::y#7 plot::y#2 plot::y#4 plot::y#8 ]
-zp ZP_BYTE:3 [ line_xdyi::x#2 line_xdyi::x#0 line_xdyi::x#1 lines::$2 ]
-zp ZP_BYTE:4 [ line_xdyi::y#2 line_xdyi::y#0 line_xdyi::y#5 line_xdyi::y#1 lines::$3 ]
-zp ZP_BYTE:5 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 line::x0#0 ]
+zp ZP_BYTE:3 [ line_ydxi::xd#2 line_ydxi::xd#1 line_ydxi::xd#0 lines::$2 line::y0#0 ]
+zp ZP_BYTE:4 [ line_ydxi::yd#5 line_ydxi::yd#1 line_ydxi::yd#0 lines::$3 line::yd#1 line::yd#0 line::yd#3 line::yd#10 ]
+zp ZP_BYTE:5 [ line_ydxi::y1#6 line_ydxi::y1#1 line_ydxi::y1#0 line::x0#0 ]
+zp ZP_BYTE:6 [ line_ydxi::x#3 line_ydxi::x#5 line_ydxi::x#1 line_ydxi::x#0 line_ydxi::x#6 line_ydxi::x#2 ]
+zp ZP_BYTE:7 [ line_ydxi::y#3 line_ydxi::y#6 line_ydxi::y#1 line_ydxi::y#0 line_ydxi::y#2 ]
+zp ZP_BYTE:8 [ line_ydxi::e#3 line_ydxi::e#0 line_ydxi::e#6 line_ydxi::e#2 line_ydxi::e#1 line::xd#1 line::xd#0 ]
+reg byte x [ plot::x#4 plot::x#1 plot::x#0 plot::x#3 plot::x#2 ]
+reg byte y [ plot::y#4 plot::y#1 plot::y#0 plot::y#3 plot::y#2 ]
+zp ZP_BYTE:9 [ line_xdyi::yd#2 line_xdyi::yd#0 line_xdyi::yd#1 ]
+zp ZP_BYTE:10 [ line_xdyi::xd#5 line_xdyi::xd#0 line_xdyi::xd#1 ]
+zp ZP_BYTE:11 [ line_xdyi::x1#6 line_xdyi::x1#0 line_xdyi::x1#1 ]
+zp ZP_BYTE:12 [ line_xdyi::x#3 line_xdyi::x#6 line_xdyi::x#0 line_xdyi::x#1 line_xdyi::x#2 ]
+zp ZP_BYTE:13 [ line_xdyi::y#3 line_xdyi::y#5 line_xdyi::y#0 line_xdyi::y#1 line_xdyi::y#6 line_xdyi::y#2 ]
+zp ZP_BYTE:14 [ line_xdyi::e#3 line_xdyi::e#0 line_xdyi::e#6 line_xdyi::e#2 line_xdyi::e#1 ]
+zp ZP_BYTE:15 [ line_ydxd::xd#2 line_ydxd::xd#1 line_ydxd::xd#0 ]
+zp ZP_BYTE:16 [ line_ydxd::yd#5 line_ydxd::yd#1 line_ydxd::yd#0 ]
+zp ZP_BYTE:17 [ line_ydxd::y1#6 line_ydxd::y1#1 line_ydxd::y1#0 ]
+zp ZP_BYTE:18 [ line_ydxd::x#3 line_ydxd::x#5 line_ydxd::x#1 line_ydxd::x#0 line_ydxd::x#6 line_ydxd::x#2 ]
+zp ZP_BYTE:19 [ line_ydxd::y#3 line_ydxd::y#6 line_ydxd::y#1 line_ydxd::y#0 line_ydxd::y#2 ]
+zp ZP_BYTE:20 [ line_ydxd::e#3 line_ydxd::e#0 line_ydxd::e#6 line_ydxd::e#2 line_ydxd::e#1 ]
+zp ZP_BYTE:21 [ line_xdyd::yd#2 line_xdyd::yd#0 line_xdyd::yd#1 ]
+zp ZP_BYTE:22 [ line_xdyd::xd#5 line_xdyd::xd#0 line_xdyd::xd#1 ]
+zp ZP_BYTE:23 [ line_xdyd::x1#6 line_xdyd::x1#0 line_xdyd::x1#1 ]
+zp ZP_BYTE:24 [ line_xdyd::x#3 line_xdyd::x#6 line_xdyd::x#0 line_xdyd::x#1 line_xdyd::x#2 ]
+zp ZP_BYTE:25 [ line_xdyd::y#3 line_xdyd::y#5 line_xdyd::y#0 line_xdyd::y#1 line_xdyd::y#6 line_xdyd::y#2 ]
+zp ZP_BYTE:26 [ line_xdyd::e#3 line_xdyd::e#0 line_xdyd::e#6 line_xdyd::e#2 line_xdyd::e#1 ]
 reg byte x [ init_plot_tables::x#2 init_plot_tables::x#1 ]
 reg byte y [ init_plot_tables::bit#3 init_plot_tables::bit#4 init_plot_tables::bit#1 ]
 reg byte x [ init_plot_tables::y#2 init_plot_tables::y#1 ]
-zp ZP_PTR_BYTE:6 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 plot::plotter_x#1 plot::plotter_x#2 plot::plotter#0 ]
+zp ZP_PTR_BYTE:27 [ init_plot_tables::yoffs#2 init_plot_tables::yoffs#4 init_plot_tables::yoffs#1 init_screen::b#2 init_screen::b#1 init_screen::c#2 init_screen::c#1 plot::plotter_x#1 plot::plotter_x#2 plot::plotter#0 ]
 reg byte y [ lines::$0 ]
 reg byte x [ lines::$5 ]
-zp ZP_BYTE:8 [ line::x1#0 ]
-reg byte y [ line::y0#0 ]
-zp ZP_BYTE:9 [ line::y1#0 ]
-zp ZP_BYTE:10 [ line::xd#1 line_xdyi::xd#0 ]
-reg byte x [ line::yd#0 ]
-zp ZP_BYTE:11 [ line_xdyi::x1#0 ]
-zp ZP_BYTE:12 [ line_xdyi::yd#0 ]
-reg byte a [ line::xd#0 ]
+reg byte y [ line::x1#0 ]
+reg byte x [ line::y1#0 ]
+reg byte a [ line_ydxi::$8 ]
 reg byte a [ plot::$0 ]
 reg byte a [ plot::$1 ]
 reg byte a [ plot::$2 ]
-zp ZP_PTR_BYTE:13 [ plot::plotter_y#1 plot::plotter_y#2 ]
+zp ZP_PTR_BYTE:29 [ plot::plotter_y#1 plot::plotter_y#2 ]
 reg byte a [ plot::$3 ]
-zp ZP_BYTE:15 [ plot::$5 ]
+zp ZP_BYTE:31 [ plot::$5 ]
 reg byte a [ plot::$6 ]
 reg byte a [ plot::$7 ]
 reg byte a [ line_xdyi::$8 ]
+reg byte a [ line_ydxd::$8 ]
+reg byte a [ line_xdyd::$8 ]
 reg byte a [ init_plot_tables::$0 ]
 reg byte a [ init_plot_tables::$7 ]
 reg byte a [ init_plot_tables::$8 ]