From e6962d38ac54fade7f8718a4bcdd6f36568e2ff3 Mon Sep 17 00:00:00 2001
From: jespergravgaard <jesper@balmangravgaard.dk>
Date: Thu, 17 Dec 2020 23:23:46 +0100
Subject: [PATCH] CX16 sprite example is now a 256-color 64*64 TUT sprite. #581

---
 src/main/kc/include/cx16-vera.h               |    9 +-
 .../dk/camelot64/kickc/test/TestPrograms.java |    4 +-
 src/test/kc/examples/cx16/sprite.png          |  Bin 650 -> 0 bytes
 .../kc/examples/cx16/{sprite.c => sprites.c}  |   81 +-
 src/test/kc/examples/cx16/tut.png             |  Bin 0 -> 17616 bytes
 .../examples/cx16/{sprite.asm => sprites.asm} |  123 +-
 .../examples/cx16/{sprite.cfg => sprites.cfg} |   94 +-
 .../examples/cx16/{sprite.log => sprites.log} | 1146 ++++++++++-------
 .../examples/cx16/{sprite.sym => sprites.sym} |   63 +-
 9 files changed, 908 insertions(+), 612 deletions(-)
 delete mode 100644 src/test/kc/examples/cx16/sprite.png
 rename src/test/kc/examples/cx16/{sprite.c => sprites.c} (54%)
 create mode 100644 src/test/kc/examples/cx16/tut.png
 rename src/test/ref/examples/cx16/{sprite.asm => sprites.asm} (82%)
 rename src/test/ref/examples/cx16/{sprite.cfg => sprites.cfg} (60%)
 rename src/test/ref/examples/cx16/{sprite.log => sprites.log} (66%)
 rename src/test/ref/examples/cx16/{sprite.sym => sprites.sym} (68%)

diff --git a/src/main/kc/include/cx16-vera.h b/src/main/kc/include/cx16-vera.h
index 9b7021115..696ae090d 100644
--- a/src/main/kc/include/cx16-vera.h
+++ b/src/main/kc/include/cx16-vera.h
@@ -165,7 +165,14 @@ char * const VERA_SPI_DATA = 0x9f3e;
 // Bit 0:   Select
 char * const VERA_SPI_CTRL = 0x9f3f;
 
-// Sprite Attributes address in VERA VRAM
+// VERA Palette address in VRAM  $1FA00 - $1FBFF
+// 256 entries of 2 bytes
+// byte 0 bits 4-7: Green
+// byte 0 bits 0-3: Blue
+// byte 1 bits 0-3: Red
+const unsigned long VERA_PALETTE = 0x1fa00;
+
+// Sprite Attributes address in VERA VRAM $1FC00 - $1FFFF
 const unsigned long VERA_SPRITE_ATTR = 0x1fc00;
 
 // The VERA structure of a sprite (8 bytes)
diff --git a/src/test/java/dk/camelot64/kickc/test/TestPrograms.java b/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
index 218950f1c..95e612650 100644
--- a/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
+++ b/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
@@ -464,8 +464,8 @@ public class TestPrograms {
    }
 
    @Test
-   public void testCx16Sprite() throws IOException, URISyntaxException {
-      compileAndCompare("examples/cx16/sprite.c");
+   public void testCx16Sprites() throws IOException, URISyntaxException {
+      compileAndCompare("examples/cx16/sprites.c");
    }
 
    @Test
diff --git a/src/test/kc/examples/cx16/sprite.png b/src/test/kc/examples/cx16/sprite.png
deleted file mode 100644
index 23f586478f2b06ee5e0e251271e489661bfc7335..0000000000000000000000000000000000000000
GIT binary patch
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HcmV?d00001

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diff --git a/src/test/kc/examples/cx16/sprite.c b/src/test/kc/examples/cx16/sprites.c
similarity index 54%
rename from src/test/kc/examples/cx16/sprite.c
rename to src/test/kc/examples/cx16/sprites.c
index fae41380f..b1daf920c 100644
--- a/src/test/kc/examples/cx16/sprite.c
+++ b/src/test/kc/examples/cx16/sprites.c
@@ -1,19 +1,47 @@
 // Example program for the Commander X16
-// Displays some sprites - exceeding the per-line limits of the CX16
+// Displays 32 64*64 TUT sprites
 
 #pragma target(cx16) 
 #include <cx16.h>
 #include <6502.h>
 
-// A 64*64 8bpp sprite 
-align(0x100) char SPRITE_PIXELS[64*64] = kickasm(resource "sprite.png") {{
-	.var pic = LoadPicture("sprite.png", List().add($000000, $ffffff))
-	.for (var x=0;x<64; x++)
-    	.for (var y=0; y<64; y++)
-            .byte (pic.getPixel(x,y)==0) ? 0 : 1
-}};
+#define NUM_SPRITES 32
 
-#define NUM_SPRITES 128
+// A 64*64 8bpp TUT sprite 
+align(0x1200) char SPRITE_PIXELS[64*64] = kickasm(resource "tut.png") {{
+	.var pic = LoadPicture("tut.png")
+    // palette: rgb->idx
+    .var palette = Hashtable()
+    // RGB value for each palette index
+    .var palList = List()
+    // Next palette index
+    .var nxt_idx = 0;
+    .for (var y=0; y<64; y++) {
+    	.for (var x=0;x<64; x++) {
+            .var rgb = pic.getPixel(x,y);
+            .var idx = palette.get(rgb)
+            .if(idx==null) {
+                .eval idx = nxt_idx++;
+                .eval palette.put(rgb,idx);
+                .eval palList.add(rgb)
+            }
+            // Output pixel index
+            .byte idx
+        }
+    }
+    // Output sprite palette (offset 64*64 bytes=
+    .for(var i=0;i<256;i++) {
+        .var rgb = palList.get(i)
+        .var red = floor(rgb / [256*256])
+        .var green = floor(rgb/256) & 255
+        .var blue = rgb & 255
+        // bits 4-8: green, bits 0-3 blue
+        .byte (green/16)>>4 | blue/16
+        // bits bits 0-3 red
+        .byte red/16
+    }
+
+}};
 
 // Address to use for sprite pixels in VRAM
 const unsigned long SPRITE_PIXELS_VRAM = 0x08000; 
@@ -24,6 +52,8 @@ struct VERA_SPRITE SPRITE_ATTR = { <(SPRITE_PIXELS_VRAM/32)|VERA_SPRITE_8BPP, 32
 void main() {
     // Copy sprite data to VRAM
     memcpy_to_vram((char)>SPRITE_PIXELS_VRAM, <SPRITE_PIXELS_VRAM, SPRITE_PIXELS, sizeof(SPRITE_PIXELS));
+    // Copy sprite palette to VRAM
+    memcpy_to_vram((char)>VERA_PALETTE, <VERA_PALETTE, SPRITE_PIXELS+64*64, 0x200);
     // Copy 8* sprite attributes to VRAM    
     char* vram_sprite_attr = <VERA_SPRITE_ATTR;
     for(char s=0;s<NUM_SPRITES;s++) {
@@ -31,13 +61,7 @@ void main() {
         SPRITE_ATTR.Y += 10;
         memcpy_to_vram((char)>VERA_SPRITE_ATTR, vram_sprite_attr, &SPRITE_ATTR, sizeof(SPRITE_ATTR));
         vram_sprite_attr += sizeof(SPRITE_ATTR);
-    }   
-    // Make a border
-    //*VERA_CTRL |= VERA_DCSEL;
-    //*VERA_DC_HSTART = 16/4;
-    //*VERA_DC_HSTOP = 624/4;
-    //*VERA_DC_VSTART = 16/2;
-    //*VERA_DC_VSTOP = 464/2;    
+    }    
     // Enable sprites
     *VERA_CTRL &= ~VERA_DCSEL;
     *VERA_DC_VIDEO |= VERA_SPRITES_ENABLE;
@@ -49,13 +73,15 @@ void main() {
 }
 
 // X sine [0;640-64]
-align(0x100) unsigned int SINX[241] = kickasm {{
-    .fillword 256, 288+288*sin(i*2*PI/241)
+const char SINX_LEN = 241;
+align(0x100) unsigned int SINX[SINX_LEN] = kickasm {{
+    .fillword 256, 288+288*sin(i*2*PI/SINX_LEN)
 }};
 
 // Y sine [0;480-64]
-align(0x100) unsigned int SINY[251] = kickasm {{
-    .fillword 256, 208+208*sin(i*2*PI/251)
+const char SINY_LEN = 251;
+align(0x100) unsigned int SINY[SINY_LEN] = kickasm {{
+    .fillword 256, 208+208*sin(i*2*PI/SINY_LEN)
 }};
 
 // X sine index
@@ -65,12 +91,9 @@ volatile unsigned int sin_idx_y = 79;
 
 // VSYNC Interrupt Routine
 void irq_vsync() {
-    // Color border
-    //*VERA_CTRL &= ~VERA_DCSEL;
-    //*VERA_DC_BORDER = 2; 
     // Move the sprite around
-    if(++sin_idx_x==241) sin_idx_x = 0;
-    if(--sin_idx_y==0xffff) sin_idx_y = 251-1;
+    if(++sin_idx_x==SINX_LEN) sin_idx_x = 0;
+    if(--sin_idx_y==0xffff) sin_idx_y = SINY_LEN-1;
     const char vram_sprite_attr_bank = (char)>VERA_SPRITE_ATTR;
     char *vram_sprite_pos = <VERA_SPRITE_ATTR+2;
     unsigned int i_x = sin_idx_x;
@@ -81,12 +104,10 @@ void irq_vsync() {
         // Copy sprite positions to VRAM (the 4 relevant bytes in VERA_SPRITE_ATTR)
         memcpy_to_vram(vram_sprite_attr_bank, vram_sprite_pos, &SPRITE_ATTR+2, 4);
         vram_sprite_pos += sizeof(SPRITE_ATTR);
-        i_x += 3; if(i_x>=241) i_x -= 241;
-        i_y += 5; if(i_y>=251) i_y -= 251;
+        i_x += 9; if(i_x>=SINX_LEN) i_x -= SINX_LEN;
+        i_y += 5; if(i_y>=SINY_LEN) i_y -= SINY_LEN;
     }
-    // Black border
-    //*VERA_CTRL &= ~VERA_DCSEL;
-    //*VERA_DC_BORDER = 0; 
+
     // Reset the VSYNC interrupt
     *VERA_ISR = VERA_VSYNC;
     // Exit CX16 KERNAL IRQ
diff --git a/src/test/kc/examples/cx16/tut.png b/src/test/kc/examples/cx16/tut.png
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diff --git a/src/test/ref/examples/cx16/sprite.asm b/src/test/ref/examples/cx16/sprites.asm
similarity index 82%
rename from src/test/ref/examples/cx16/sprite.asm
rename to src/test/ref/examples/cx16/sprites.asm
index 526236607..78c06a237 100644
--- a/src/test/ref/examples/cx16/sprite.asm
+++ b/src/test/ref/examples/cx16/sprites.asm
@@ -1,8 +1,8 @@
 // Example program for the Commander X16
-// Displays some sprites - exceeding the per-line limits of the CX16
+// Displays 32 64*64 TUT sprites
 .cpu _65c02
   // Commodore 64 PRG executable file
-.file [name="sprite.prg", type="prg", segments="Program"]
+.file [name="sprites.prg", type="prg", segments="Program"]
 .segmentdef Program [segments="Basic, Code, Data"]
 .segmentdef Basic [start=$0801]
 .segmentdef Code [start=$80d]
@@ -16,12 +16,22 @@
   .const VERA_DCSEL = 2
   .const VERA_ADDRSEL = 1
   .const VERA_VSYNC = 1
-  // Sprite Attributes address in VERA VRAM
+  // VERA Palette address in VRAM  $1FA00 - $1FBFF
+  // 256 entries of 2 bytes
+  // byte 0 bits 4-7: Green
+  // byte 0 bits 0-3: Blue
+  // byte 1 bits 0-3: Red
+  .const VERA_PALETTE = $1fa00
+  // Sprite Attributes address in VERA VRAM $1FC00 - $1FFFF
   .const VERA_SPRITE_ATTR = $1fc00
   // 8BPP sprite mode (add to VERA_SPRITE.ADDR to enable)
   .const VERA_SPRITE_8BPP = $8000
   // Address to use for sprite pixels in VRAM
   .const SPRITE_PIXELS_VRAM = $8000
+  // X sine [0;640-64]
+  .const SINX_LEN = $f1
+  // Y sine [0;480-64]
+  .const SINY_LEN = $fb
   .const SIZEOF_STRUCT_VERA_SPRITE = 8
   .const OFFSET_STRUCT_VERA_SPRITE_X = 2
   .const OFFSET_STRUCT_VERA_SPRITE_Y = 4
@@ -100,16 +110,16 @@ irq_vsync: {
     .label s = 2
     .label __13 = $16
     .label __14 = $18
-    // if(++sin_idx_x==241)
+    // if(++sin_idx_x==SINX_LEN)
     inc.z sin_idx_x
     bne !+
     inc.z sin_idx_x+1
   !:
     lda.z sin_idx_x+1
-    cmp #>$f1
+    cmp #>SINX_LEN
     bne __b1
     lda.z sin_idx_x
-    cmp #<$f1
+    cmp #<SINX_LEN
     bne __b1
     // sin_idx_x = 0
     lda #<0
@@ -128,10 +138,10 @@ irq_vsync: {
     lda.z sin_idx_y
     cmp #<$ffff
     bne __b2
-    // sin_idx_y = 251-1
-    lda #<$fb-1
+    // sin_idx_y = SINY_LEN-1
+    lda #<SINY_LEN-1
     sta.z sin_idx_y
-    lda #>$fb-1
+    lda #>SINY_LEN-1
     sta.z sin_idx_y+1
   __b2:
     // i_x = sin_idx_x
@@ -153,12 +163,9 @@ irq_vsync: {
   __b5:
     // for(char s=0;s<NUM_SPRITES;s++)
     lda.z s
-    cmp #$80
+    cmp #$20
     bcc __b6
     // *VERA_ISR = VERA_VSYNC
-    // Black border
-    //*VERA_CTRL &= ~VERA_DCSEL;
-    //*VERA_DC_BORDER = 0; 
     // Reset the VSYNC interrupt
     lda #VERA_VSYNC
     sta VERA_ISR
@@ -231,25 +238,25 @@ irq_vsync: {
     bcc !+
     inc.z vram_sprite_pos+1
   !:
-    // i_x += 3
-    lda #3
+    // i_x += 9
+    lda #9
     clc
     adc.z i_x
     sta.z i_x
     bcc !+
     inc.z i_x+1
   !:
-    // if(i_x>=241)
+    // if(i_x>=SINX_LEN)
     lda.z i_x+1
     bne !+
     lda.z i_x
-    cmp #$f1
+    cmp #SINX_LEN
     bcc __b8
   !:
-    // i_x -= 241
+    // i_x -= SINX_LEN
     sec
     lda.z i_x
-    sbc #$f1
+    sbc #SINX_LEN
     sta.z i_x
     lda.z i_x+1
     sbc #0
@@ -263,17 +270,17 @@ irq_vsync: {
     bcc !+
     inc.z i_y+1
   !:
-    // if(i_y>=251)
+    // if(i_y>=SINY_LEN)
     lda.z i_y+1
     bne !+
     lda.z i_y
-    cmp #$fb
+    cmp #SINY_LEN
     bcc __b9
   !:
-    // i_y -= 251
+    // i_y -= SINY_LEN
     sec
     lda.z i_y
-    sbc #$fb
+    sbc #SINY_LEN
     sta.z i_y
     lda.z i_y+1
     sbc #0
@@ -303,6 +310,22 @@ main: {
     lda #>SPRITE_PIXELS_VRAM&$ffff
     sta.z memcpy_to_vram.vdest+1
     jsr memcpy_to_vram
+    // memcpy_to_vram((char)>VERA_PALETTE, <VERA_PALETTE, SPRITE_PIXELS+64*64, 0x200)
+  // Copy sprite palette to VRAM
+    lda #<$200
+    sta.z memcpy_to_vram.num
+    lda #>$200
+    sta.z memcpy_to_vram.num+1
+    lda #<SPRITE_PIXELS+$40*$40
+    sta.z memcpy_to_vram.src
+    lda #>SPRITE_PIXELS+$40*$40
+    sta.z memcpy_to_vram.src+1
+    ldx #VERA_PALETTE>>$10
+    lda #<VERA_PALETTE&$ffff
+    sta.z memcpy_to_vram.vdest
+    lda #>VERA_PALETTE&$ffff
+    sta.z memcpy_to_vram.vdest+1
+    jsr memcpy_to_vram
     lda #<VERA_SPRITE_ATTR&$ffff
     sta.z vram_sprite_attr
     lda #>VERA_SPRITE_ATTR&$ffff
@@ -312,15 +335,9 @@ main: {
   __b1:
     // for(char s=0;s<NUM_SPRITES;s++)
     lda.z s
-    cmp #$80
+    cmp #$20
     bcc __b2
     // *VERA_CTRL &= ~VERA_DCSEL
-    // Make a border
-    //*VERA_CTRL |= VERA_DCSEL;
-    //*VERA_DC_HSTART = 16/4;
-    //*VERA_DC_HSTOP = 624/4;
-    //*VERA_DC_VSTART = 16/2;
-    //*VERA_DC_VSTOP = 464/2;    
     // Enable sprites
     lda #VERA_DCSEL^$ff
     and VERA_CTRL
@@ -450,23 +467,49 @@ memcpy_to_vram: {
     jmp __b1
 }
 .segment Data
-  // A 64*64 8bpp sprite 
-  .align $100
+  // A 64*64 8bpp TUT sprite 
+  .align $1200
 SPRITE_PIXELS:
-.var pic = LoadPicture("sprite.png", List().add($000000, $ffffff))
-	.for (var x=0;x<64; x++)
-    	.for (var y=0; y<64; y++)
-            .byte (pic.getPixel(x,y)==0) ? 0 : 1
+.var pic = LoadPicture("tut.png")
+    // palette: rgb->idx
+    .var palette = Hashtable()
+    // RGB value for each palette index
+    .var palList = List()
+    // Next palette index
+    .var nxt_idx = 0;
+    .for (var y=0; y<64; y++) {
+    	.for (var x=0;x<64; x++) {
+            .var rgb = pic.getPixel(x,y);
+            .var idx = palette.get(rgb)
+            .if(idx==null) {
+                .eval idx = nxt_idx++;
+                .eval palette.put(rgb,idx);
+                .eval palList.add(rgb)
+            }
+            // Output pixel index
+            .byte idx
+        }
+    }
+    // Output sprite palette (offset 64*64 bytes=
+    .for(var i=0;i<256;i++) {
+        .var rgb = palList.get(i)
+        .var red = floor(rgb / [256*256])
+        .var green = floor(rgb/256) & 255
+        .var blue = rgb & 255
+        // bits 4-8: green, bits 0-3 blue
+        .byte (green/16)>>4 | blue/16
+        // bits bits 0-3 red
+        .byte red/16
+    }
+
 
-  // X sine [0;640-64]
   .align $100
 SINX:
-.fillword 256, 288+288*sin(i*2*PI/241)
+.fillword 256, 288+288*sin(i*2*PI/SINX_LEN)
 
-  // Y sine [0;480-64]
   .align $100
 SINY:
-.fillword 256, 208+208*sin(i*2*PI/251)
+.fillword 256, 208+208*sin(i*2*PI/SINY_LEN)
 
   // Sprite attributes: 8bpp, in front, 64x64, address SPRITE_PIXELS_VRAM
   SPRITE_ATTR: .word (SPRITE_PIXELS_VRAM/$20&$ffff)|VERA_SPRITE_8BPP, $140-$20, $f0-$20
diff --git a/src/test/ref/examples/cx16/sprite.cfg b/src/test/ref/examples/cx16/sprites.cfg
similarity index 60%
rename from src/test/ref/examples/cx16/sprite.cfg
rename to src/test/ref/examples/cx16/sprites.cfg
index 8f74e5a61..dbdc6a46f 100644
--- a/src/test/ref/examples/cx16/sprite.cfg
+++ b/src/test/ref/examples/cx16/sprites.cfg
@@ -18,7 +18,7 @@ __start::@return: scope:[__start]  from __start::@1
 void irq_vsync()
 irq_vsync: scope:[irq_vsync]  from
   [6] sin_idx_x = ++ sin_idx_x
-  [7] if(sin_idx_x!=$f1) goto irq_vsync::@1
+  [7] if(sin_idx_x!=SINX_LEN) goto irq_vsync::@1
   to:irq_vsync::@3
 irq_vsync::@3: scope:[irq_vsync]  from irq_vsync
   [8] sin_idx_x = 0
@@ -28,7 +28,7 @@ irq_vsync::@1: scope:[irq_vsync]  from irq_vsync irq_vsync::@3
   [10] if(sin_idx_y!=$ffff) goto irq_vsync::@2
   to:irq_vsync::@4
 irq_vsync::@4: scope:[irq_vsync]  from irq_vsync::@1
-  [11] sin_idx_y = $fb-1
+  [11] sin_idx_y = SINY_LEN-1
   to:irq_vsync::@2
 irq_vsync::@2: scope:[irq_vsync]  from irq_vsync::@1 irq_vsync::@4
   [12] irq_vsync::i_x#0 = sin_idx_x
@@ -39,7 +39,7 @@ irq_vsync::@5: scope:[irq_vsync]  from irq_vsync::@2 irq_vsync::@9
   [14] irq_vsync::i_y#3 = phi( irq_vsync::@2/irq_vsync::i_y#0, irq_vsync::@9/irq_vsync::i_y#9 )
   [14] irq_vsync::i_x#3 = phi( irq_vsync::@2/irq_vsync::i_x#0, irq_vsync::@9/irq_vsync::i_x#7 )
   [14] irq_vsync::s#2 = phi( irq_vsync::@2/0, irq_vsync::@9/irq_vsync::s#1 )
-  [15] if(irq_vsync::s#2<$80) goto irq_vsync::@6
+  [15] if(irq_vsync::s#2<$20) goto irq_vsync::@6
   to:irq_vsync::@7
 irq_vsync::@7: scope:[irq_vsync]  from irq_vsync::@5
   [16] *VERA_ISR = VERA_VSYNC
@@ -55,24 +55,24 @@ irq_vsync::@6: scope:[irq_vsync]  from irq_vsync::@5
   [22] irq_vsync::$12 = irq_vsync::i_y#3 << 1
   [23] irq_vsync::$14 = SINY + irq_vsync::$12
   [24] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *irq_vsync::$14
-  [25] memcpy_to_vram::vdest#2 = (void*)irq_vsync::vram_sprite_pos#2
+  [25] memcpy_to_vram::vdest#3 = (void*)irq_vsync::vram_sprite_pos#2
   [26] call memcpy_to_vram 
   to:irq_vsync::@12
 irq_vsync::@12: scope:[irq_vsync]  from irq_vsync::@6
   [27] irq_vsync::vram_sprite_pos#1 = irq_vsync::vram_sprite_pos#2 + SIZEOF_STRUCT_VERA_SPRITE
-  [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 3
-  [29] if(irq_vsync::i_x#1<$f1) goto irq_vsync::@8
+  [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 9
+  [29] if(irq_vsync::i_x#1<SINX_LEN) goto irq_vsync::@8
   to:irq_vsync::@10
 irq_vsync::@10: scope:[irq_vsync]  from irq_vsync::@12
-  [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - $f1
+  [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - SINX_LEN
   to:irq_vsync::@8
 irq_vsync::@8: scope:[irq_vsync]  from irq_vsync::@10 irq_vsync::@12
   [31] irq_vsync::i_x#7 = phi( irq_vsync::@10/irq_vsync::i_x#2, irq_vsync::@12/irq_vsync::i_x#1 )
   [32] irq_vsync::i_y#1 = irq_vsync::i_y#3 + 5
-  [33] if(irq_vsync::i_y#1<$fb) goto irq_vsync::@9
+  [33] if(irq_vsync::i_y#1<SINY_LEN) goto irq_vsync::@9
   to:irq_vsync::@11
 irq_vsync::@11: scope:[irq_vsync]  from irq_vsync::@8
-  [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - $fb
+  [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - SINY_LEN
   to:irq_vsync::@9
 irq_vsync::@9: scope:[irq_vsync]  from irq_vsync::@11 irq_vsync::@8
   [35] irq_vsync::i_y#9 = phi( irq_vsync::@11/irq_vsync::i_y#2, irq_vsync::@8/irq_vsync::i_y#1 )
@@ -83,64 +83,68 @@ void main()
 main: scope:[main]  from __start::@1
   [37] phi()
   [38] call memcpy_to_vram 
+  to:main::@5
+main::@5: scope:[main]  from main
+  [39] phi()
+  [40] call memcpy_to_vram 
   to:main::@1
-main::@1: scope:[main]  from main main::@5
-  [39] main::vram_sprite_attr#2 = phi( main/(byte*)<VERA_SPRITE_ATTR, main::@5/main::vram_sprite_attr#1 )
-  [39] main::s#2 = phi( main/0, main::@5/main::s#1 )
-  [40] if(main::s#2<$80) goto main::@2
+main::@1: scope:[main]  from main::@5 main::@6
+  [41] main::vram_sprite_attr#2 = phi( main::@5/(byte*)<VERA_SPRITE_ATTR, main::@6/main::vram_sprite_attr#1 )
+  [41] main::s#2 = phi( main::@5/0, main::@6/main::s#1 )
+  [42] if(main::s#2<$20) goto main::@2
   to:main::@3
 main::@3: scope:[main]  from main::@1
-  [41] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL
-  [42] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE
+  [43] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL
+  [44] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE
   to:main::SEI1
 main::SEI1: scope:[main]  from main::@3
   asm { sei  }
   to:main::@4
 main::@4: scope:[main]  from main::SEI1
-  [44] *KERNEL_IRQ = &irq_vsync
-  [45] *VERA_IEN = VERA_VSYNC
+  [46] *KERNEL_IRQ = &irq_vsync
+  [47] *VERA_IEN = VERA_VSYNC
   to:main::CLI1
 main::CLI1: scope:[main]  from main::@4
   asm { cli  }
   to:main::@return
 main::@return: scope:[main]  from main::CLI1
-  [47] return 
+  [49] return 
   to:@return
 main::@2: scope:[main]  from main::@1
-  [48] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a
-  [49] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a
-  [50] memcpy_to_vram::vdest#1 = (void*)main::vram_sprite_attr#2
-  [51] call memcpy_to_vram 
-  to:main::@5
-main::@5: scope:[main]  from main::@2
-  [52] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE
-  [53] main::s#1 = ++ main::s#2
+  [50] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a
+  [51] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a
+  [52] memcpy_to_vram::vdest#2 = (void*)main::vram_sprite_attr#2
+  [53] call memcpy_to_vram 
+  to:main::@6
+main::@6: scope:[main]  from main::@2
+  [54] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE
+  [55] main::s#1 = ++ main::s#2
   to:main::@1
 
 void memcpy_to_vram(byte memcpy_to_vram::vbank , void* memcpy_to_vram::vdest , void* memcpy_to_vram::src , word memcpy_to_vram::num)
-memcpy_to_vram: scope:[memcpy_to_vram]  from irq_vsync::@6 main main::@2
-  [54] memcpy_to_vram::num#3 = phi( irq_vsync::@6/4, main/(word)$40*$40*SIZEOF_BYTE, main::@2/SIZEOF_STRUCT_VERA_SPRITE )
-  [54] memcpy_to_vram::src#3 = phi( irq_vsync::@6/(void*)&SPRITE_ATTR+2, main/(void*)SPRITE_PIXELS, main::@2/(void*)&SPRITE_ATTR )
-  [54] memcpy_to_vram::vbank#3 = phi( irq_vsync::@6/irq_vsync::vram_sprite_attr_bank, main/0, main::@2/(byte)>VERA_SPRITE_ATTR )
-  [54] memcpy_to_vram::vdest#3 = phi( irq_vsync::@6/memcpy_to_vram::vdest#2, main/(void*)<SPRITE_PIXELS_VRAM, main::@2/memcpy_to_vram::vdest#1 )
-  [55] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL
-  [56] memcpy_to_vram::$0 = < memcpy_to_vram::vdest#3
-  [57] *VERA_ADDRX_L = memcpy_to_vram::$0
-  [58] memcpy_to_vram::$1 = > memcpy_to_vram::vdest#3
-  [59] *VERA_ADDRX_M = memcpy_to_vram::$1
-  [60] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#3
-  [61] *VERA_ADDRX_H = memcpy_to_vram::$2
-  [62] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#3 + memcpy_to_vram::num#3
-  [63] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#3
+memcpy_to_vram: scope:[memcpy_to_vram]  from irq_vsync::@6 main main::@2 main::@5
+  [56] memcpy_to_vram::num#4 = phi( irq_vsync::@6/4, main/(word)$40*$40*SIZEOF_BYTE, main::@2/SIZEOF_STRUCT_VERA_SPRITE, main::@5/$200 )
+  [56] memcpy_to_vram::src#4 = phi( irq_vsync::@6/(void*)&SPRITE_ATTR+2, main/(void*)SPRITE_PIXELS, main::@2/(void*)&SPRITE_ATTR, main::@5/(void*)SPRITE_PIXELS+(word)$40*$40 )
+  [56] memcpy_to_vram::vbank#4 = phi( irq_vsync::@6/irq_vsync::vram_sprite_attr_bank, main/0, main::@2/(byte)>VERA_SPRITE_ATTR, main::@5/(byte)>VERA_PALETTE )
+  [56] memcpy_to_vram::vdest#4 = phi( irq_vsync::@6/memcpy_to_vram::vdest#3, main/(void*)<SPRITE_PIXELS_VRAM, main::@2/memcpy_to_vram::vdest#2, main::@5/(void*)<VERA_PALETTE )
+  [57] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL
+  [58] memcpy_to_vram::$0 = < memcpy_to_vram::vdest#4
+  [59] *VERA_ADDRX_L = memcpy_to_vram::$0
+  [60] memcpy_to_vram::$1 = > memcpy_to_vram::vdest#4
+  [61] *VERA_ADDRX_M = memcpy_to_vram::$1
+  [62] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#4
+  [63] *VERA_ADDRX_H = memcpy_to_vram::$2
+  [64] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#4 + memcpy_to_vram::num#4
+  [65] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#4
   to:memcpy_to_vram::@1
 memcpy_to_vram::@1: scope:[memcpy_to_vram]  from memcpy_to_vram memcpy_to_vram::@2
-  [64] memcpy_to_vram::s#2 = phi( memcpy_to_vram/memcpy_to_vram::s#4, memcpy_to_vram::@2/memcpy_to_vram::s#1 )
-  [65] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2
+  [66] memcpy_to_vram::s#2 = phi( memcpy_to_vram/memcpy_to_vram::s#4, memcpy_to_vram::@2/memcpy_to_vram::s#1 )
+  [67] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2
   to:memcpy_to_vram::@return
 memcpy_to_vram::@return: scope:[memcpy_to_vram]  from memcpy_to_vram::@1
-  [66] return 
+  [68] return 
   to:@return
 memcpy_to_vram::@2: scope:[memcpy_to_vram]  from memcpy_to_vram::@1
-  [67] *VERA_DATA0 = *memcpy_to_vram::s#2
-  [68] memcpy_to_vram::s#1 = ++ memcpy_to_vram::s#2
+  [69] *VERA_DATA0 = *memcpy_to_vram::s#2
+  [70] memcpy_to_vram::s#1 = ++ memcpy_to_vram::s#2
   to:memcpy_to_vram::@1
diff --git a/src/test/ref/examples/cx16/sprite.log b/src/test/ref/examples/cx16/sprites.log
similarity index 66%
rename from src/test/ref/examples/cx16/sprite.log
rename to src/test/ref/examples/cx16/sprites.log
index e649d6b1c..f87d1e627 100644
--- a/src/test/ref/examples/cx16/sprite.log
+++ b/src/test/ref/examples/cx16/sprites.log
@@ -1,8 +1,8 @@
 Resolved forward reference irq_vsync to void irq_vsync()
-Setting struct to load/store in variable affected by address-of main::$6 = call memcpy_to_vram (byte)>VERA_SPRITE_ATTR main::vram_sprite_attr &SPRITE_ATTR main::$5 
+Setting struct to load/store in variable affected by address-of main::$7 = call memcpy_to_vram (byte)>VERA_SPRITE_ATTR main::vram_sprite_attr &SPRITE_ATTR main::$6 
 Setting struct to load/store in variable affected by address-of irq_vsync::$5 = call memcpy_to_vram irq_vsync::vram_sprite_attr_bank irq_vsync::vram_sprite_pos &SPRITE_ATTR+2 4 
-Resolving sizeof() main::$5 = sizeof  SPRITE_ATTR
-Resolving sizeof() main::$7 = sizeof  SPRITE_ATTR
+Resolving sizeof() main::$6 = sizeof  SPRITE_ATTR
+Resolving sizeof() main::$8 = sizeof  SPRITE_ATTR
 Resolving sizeof() irq_vsync::$6 = sizeof  SPRITE_ATTR
 Inlined call call SEI 
 Inlined call call CLI 
@@ -11,22 +11,22 @@ Inlined call call __init
 CONTROL FLOW GRAPH SSA
 
 void memcpy_to_vram(byte memcpy_to_vram::vbank , void* memcpy_to_vram::vdest , void* memcpy_to_vram::src , word memcpy_to_vram::num)
-memcpy_to_vram: scope:[memcpy_to_vram]  from irq_vsync::@6 main main::@2
-  memcpy_to_vram::num#3 = phi( irq_vsync::@6/memcpy_to_vram::num#2, main/memcpy_to_vram::num#0, main::@2/memcpy_to_vram::num#1 )
-  memcpy_to_vram::src#3 = phi( irq_vsync::@6/memcpy_to_vram::src#2, main/memcpy_to_vram::src#0, main::@2/memcpy_to_vram::src#1 )
-  memcpy_to_vram::vbank#3 = phi( irq_vsync::@6/memcpy_to_vram::vbank#2, main/memcpy_to_vram::vbank#0, main::@2/memcpy_to_vram::vbank#1 )
-  memcpy_to_vram::vdest#3 = phi( irq_vsync::@6/memcpy_to_vram::vdest#2, main/memcpy_to_vram::vdest#0, main::@2/memcpy_to_vram::vdest#1 )
+memcpy_to_vram: scope:[memcpy_to_vram]  from irq_vsync::@6 main main::@2 main::@5
+  memcpy_to_vram::num#4 = phi( irq_vsync::@6/memcpy_to_vram::num#3, main/memcpy_to_vram::num#0, main::@2/memcpy_to_vram::num#2, main::@5/memcpy_to_vram::num#1 )
+  memcpy_to_vram::src#4 = phi( irq_vsync::@6/memcpy_to_vram::src#3, main/memcpy_to_vram::src#0, main::@2/memcpy_to_vram::src#2, main::@5/memcpy_to_vram::src#1 )
+  memcpy_to_vram::vbank#4 = phi( irq_vsync::@6/memcpy_to_vram::vbank#3, main/memcpy_to_vram::vbank#0, main::@2/memcpy_to_vram::vbank#2, main::@5/memcpy_to_vram::vbank#1 )
+  memcpy_to_vram::vdest#4 = phi( irq_vsync::@6/memcpy_to_vram::vdest#3, main/memcpy_to_vram::vdest#0, main::@2/memcpy_to_vram::vdest#2, main::@5/memcpy_to_vram::vdest#1 )
   *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL
-  memcpy_to_vram::$0 = < memcpy_to_vram::vdest#3
+  memcpy_to_vram::$0 = < memcpy_to_vram::vdest#4
   *VERA_ADDRX_L = memcpy_to_vram::$0
-  memcpy_to_vram::$1 = > memcpy_to_vram::vdest#3
+  memcpy_to_vram::$1 = > memcpy_to_vram::vdest#4
   *VERA_ADDRX_M = memcpy_to_vram::$1
-  memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#3
+  memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#4
   *VERA_ADDRX_H = memcpy_to_vram::$2
-  memcpy_to_vram::$5 = (byte*)memcpy_to_vram::src#3
-  memcpy_to_vram::$3 = memcpy_to_vram::$5 + memcpy_to_vram::num#3
+  memcpy_to_vram::$5 = (byte*)memcpy_to_vram::src#4
+  memcpy_to_vram::$3 = memcpy_to_vram::$5 + memcpy_to_vram::num#4
   memcpy_to_vram::end#0 = memcpy_to_vram::$3
-  memcpy_to_vram::s#0 = ((byte*)) memcpy_to_vram::src#3
+  memcpy_to_vram::s#0 = ((byte*)) memcpy_to_vram::src#4
   to:memcpy_to_vram::@1
 memcpy_to_vram::@1: scope:[memcpy_to_vram]  from memcpy_to_vram memcpy_to_vram::@2
   memcpy_to_vram::end#1 = phi( memcpy_to_vram/memcpy_to_vram::end#0, memcpy_to_vram::@2/memcpy_to_vram::end#2 )
@@ -54,32 +54,39 @@ main: scope:[main]  from __start::@1
   call memcpy_to_vram 
   to:main::@5
 main::@5: scope:[main]  from main
+  memcpy_to_vram::vbank#1 = (byte)>VERA_PALETTE
+  memcpy_to_vram::vdest#1 = (void*)<VERA_PALETTE
+  memcpy_to_vram::src#1 = (void*)SPRITE_PIXELS+$40*$40
+  memcpy_to_vram::num#1 = $200
+  call memcpy_to_vram 
+  to:main::@6
+main::@6: scope:[main]  from main::@5
   main::vram_sprite_attr#0 = (byte*)<VERA_SPRITE_ATTR
   main::s#0 = 0
   to:main::@1
-main::@1: scope:[main]  from main::@5 main::@6
-  main::vram_sprite_attr#4 = phi( main::@5/main::vram_sprite_attr#0, main::@6/main::vram_sprite_attr#1 )
-  main::s#2 = phi( main::@5/main::s#0, main::@6/main::s#1 )
-  main::$4 = main::s#2 < $80
-  if(main::$4) goto main::@2
+main::@1: scope:[main]  from main::@6 main::@7
+  main::vram_sprite_attr#4 = phi( main::@6/main::vram_sprite_attr#0, main::@7/main::vram_sprite_attr#1 )
+  main::s#2 = phi( main::@6/main::s#0, main::@7/main::s#1 )
+  main::$5 = main::s#2 < $20
+  if(main::$5) goto main::@2
   to:main::@3
 main::@2: scope:[main]  from main::@1
   main::s#4 = phi( main::@1/main::s#2 )
   main::vram_sprite_attr#2 = phi( main::@1/main::vram_sprite_attr#4 )
   *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a
   *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a
-  main::$5 = SIZEOF_STRUCT_VERA_SPRITE
-  memcpy_to_vram::vbank#1 = (byte)>VERA_SPRITE_ATTR
-  memcpy_to_vram::vdest#1 = (void*)main::vram_sprite_attr#2
-  memcpy_to_vram::src#1 = (void*)&SPRITE_ATTR
-  memcpy_to_vram::num#1 = main::$5
+  main::$6 = SIZEOF_STRUCT_VERA_SPRITE
+  memcpy_to_vram::vbank#2 = (byte)>VERA_SPRITE_ATTR
+  memcpy_to_vram::vdest#2 = (void*)main::vram_sprite_attr#2
+  memcpy_to_vram::src#2 = (void*)&SPRITE_ATTR
+  memcpy_to_vram::num#2 = main::$6
   call memcpy_to_vram 
-  to:main::@6
-main::@6: scope:[main]  from main::@2
+  to:main::@7
+main::@7: scope:[main]  from main::@2
   main::s#3 = phi( main::@2/main::s#4 )
   main::vram_sprite_attr#3 = phi( main::@2/main::vram_sprite_attr#2 )
-  main::$7 = SIZEOF_STRUCT_VERA_SPRITE
-  main::vram_sprite_attr#1 = main::vram_sprite_attr#3 + main::$7
+  main::$8 = SIZEOF_STRUCT_VERA_SPRITE
+  main::vram_sprite_attr#1 = main::vram_sprite_attr#3 + main::$8
   main::s#1 = ++ main::s#3
   to:main::@1
 main::@3: scope:[main]  from main::@1
@@ -103,7 +110,7 @@ main::@return: scope:[main]  from main::CLI1
 void irq_vsync()
 irq_vsync: scope:[irq_vsync]  from
   sin_idx_x = ++ sin_idx_x
-  irq_vsync::$0 = sin_idx_x == $f1
+  irq_vsync::$0 = sin_idx_x == SINX_LEN
   irq_vsync::$1 = ! irq_vsync::$0
   if(irq_vsync::$1) goto irq_vsync::@1
   to:irq_vsync::@3
@@ -123,14 +130,14 @@ irq_vsync::@2: scope:[irq_vsync]  from irq_vsync::@1 irq_vsync::@4
   irq_vsync::s#0 = 0
   to:irq_vsync::@5
 irq_vsync::@4: scope:[irq_vsync]  from irq_vsync::@1
-  sin_idx_y = $fb-1
+  sin_idx_y = SINY_LEN-1
   to:irq_vsync::@2
 irq_vsync::@5: scope:[irq_vsync]  from irq_vsync::@2 irq_vsync::@9
   irq_vsync::vram_sprite_pos#4 = phi( irq_vsync::@2/irq_vsync::vram_sprite_pos#0, irq_vsync::@9/irq_vsync::vram_sprite_pos#5 )
   irq_vsync::i_y#6 = phi( irq_vsync::@2/irq_vsync::i_y#0, irq_vsync::@9/irq_vsync::i_y#9 )
   irq_vsync::i_x#6 = phi( irq_vsync::@2/irq_vsync::i_x#0, irq_vsync::@9/irq_vsync::i_x#7 )
   irq_vsync::s#2 = phi( irq_vsync::@2/irq_vsync::s#0, irq_vsync::@9/irq_vsync::s#1 )
-  irq_vsync::$4 = irq_vsync::s#2 < $80
+  irq_vsync::$4 = irq_vsync::s#2 < $20
   if(irq_vsync::$4) goto irq_vsync::@6
   to:irq_vsync::@7
 irq_vsync::@6: scope:[irq_vsync]  from irq_vsync::@5
@@ -142,10 +149,10 @@ irq_vsync::@6: scope:[irq_vsync]  from irq_vsync::@5
   *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = SINX[irq_vsync::$11]
   irq_vsync::$12 = irq_vsync::i_y#3 * SIZEOF_WORD
   *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = SINY[irq_vsync::$12]
-  memcpy_to_vram::vbank#2 = irq_vsync::vram_sprite_attr_bank
-  memcpy_to_vram::vdest#2 = (void*)irq_vsync::vram_sprite_pos#2
-  memcpy_to_vram::src#2 = (void*)&SPRITE_ATTR+2
-  memcpy_to_vram::num#2 = 4
+  memcpy_to_vram::vbank#3 = irq_vsync::vram_sprite_attr_bank
+  memcpy_to_vram::vdest#3 = (void*)irq_vsync::vram_sprite_pos#2
+  memcpy_to_vram::src#3 = (void*)&SPRITE_ATTR+2
+  memcpy_to_vram::num#3 = 4
   call memcpy_to_vram 
   to:irq_vsync::@12
 irq_vsync::@12: scope:[irq_vsync]  from irq_vsync::@6
@@ -155,8 +162,8 @@ irq_vsync::@12: scope:[irq_vsync]  from irq_vsync::@6
   irq_vsync::vram_sprite_pos#3 = phi( irq_vsync::@6/irq_vsync::vram_sprite_pos#2 )
   irq_vsync::$6 = SIZEOF_STRUCT_VERA_SPRITE
   irq_vsync::vram_sprite_pos#1 = irq_vsync::vram_sprite_pos#3 + irq_vsync::$6
-  irq_vsync::i_x#1 = irq_vsync::i_x#4 + 3
-  irq_vsync::$7 = irq_vsync::i_x#1 >= $f1
+  irq_vsync::i_x#1 = irq_vsync::i_x#4 + 9
+  irq_vsync::$7 = irq_vsync::i_x#1 >= SINX_LEN
   irq_vsync::$8 = ! irq_vsync::$7
   if(irq_vsync::$8) goto irq_vsync::@8
   to:irq_vsync::@10
@@ -170,7 +177,7 @@ irq_vsync::@8: scope:[irq_vsync]  from irq_vsync::@10 irq_vsync::@12
   irq_vsync::s#5 = phi( irq_vsync::@10/irq_vsync::s#6, irq_vsync::@12/irq_vsync::s#7 )
   irq_vsync::i_y#4 = phi( irq_vsync::@10/irq_vsync::i_y#7, irq_vsync::@12/irq_vsync::i_y#8 )
   irq_vsync::i_y#1 = irq_vsync::i_y#4 + 5
-  irq_vsync::$9 = irq_vsync::i_y#1 >= $fb
+  irq_vsync::$9 = irq_vsync::i_y#1 >= SINY_LEN
   irq_vsync::$10 = ! irq_vsync::$9
   if(irq_vsync::$10) goto irq_vsync::@9
   to:irq_vsync::@11
@@ -179,7 +186,7 @@ irq_vsync::@10: scope:[irq_vsync]  from irq_vsync::@12
   irq_vsync::s#6 = phi( irq_vsync::@12/irq_vsync::s#7 )
   irq_vsync::i_y#7 = phi( irq_vsync::@12/irq_vsync::i_y#8 )
   irq_vsync::i_x#5 = phi( irq_vsync::@12/irq_vsync::i_x#1 )
-  irq_vsync::i_x#2 = irq_vsync::i_x#5 - $f1
+  irq_vsync::i_x#2 = irq_vsync::i_x#5 - SINX_LEN
   to:irq_vsync::@8
 irq_vsync::@9: scope:[irq_vsync]  from irq_vsync::@11 irq_vsync::@8
   irq_vsync::vram_sprite_pos#5 = phi( irq_vsync::@11/irq_vsync::vram_sprite_pos#6, irq_vsync::@8/irq_vsync::vram_sprite_pos#7 )
@@ -193,7 +200,7 @@ irq_vsync::@11: scope:[irq_vsync]  from irq_vsync::@8
   irq_vsync::i_x#8 = phi( irq_vsync::@8/irq_vsync::i_x#9 )
   irq_vsync::s#4 = phi( irq_vsync::@8/irq_vsync::s#5 )
   irq_vsync::i_y#5 = phi( irq_vsync::@8/irq_vsync::i_y#1 )
-  irq_vsync::i_y#2 = irq_vsync::i_y#5 - $fb
+  irq_vsync::i_y#2 = irq_vsync::i_y#5 - SINY_LEN
   to:irq_vsync::@9
 irq_vsync::@return: scope:[irq_vsync]  from irq_vsync::@7
   return 
@@ -219,17 +226,47 @@ SYMBOL TABLE SSA
 const nomodify void()** KERNEL_IRQ = (void()**)$314
 const byte OFFSET_STRUCT_VERA_SPRITE_X = 2
 const byte OFFSET_STRUCT_VERA_SPRITE_Y = 4
-const word* SINX[$f1]  = kickasm {{ .fillword 256, 288+288*sin(i*2*PI/241)
+const word* SINX[SINX_LEN]  = kickasm {{ .fillword 256, 288+288*sin(i*2*PI/SINX_LEN)
  }}
-const word* SINY[$fb]  = kickasm {{ .fillword 256, 208+208*sin(i*2*PI/251)
+const nomodify byte SINX_LEN = $f1
+const word* SINY[SINY_LEN]  = kickasm {{ .fillword 256, 208+208*sin(i*2*PI/SINY_LEN)
  }}
+const nomodify byte SINY_LEN = $fb
 const byte SIZEOF_STRUCT_VERA_SPRITE = 8
 const byte SIZEOF_WORD = 2
 struct VERA_SPRITE SPRITE_ATTR loadstore = { ADDR: (word)<SPRITE_PIXELS_VRAM/$20|VERA_SPRITE_8BPP, X: (word)$140-$20, Y: (word)$f0-$20, CTRL1: $c, CTRL2: $f0 }
-const byte* SPRITE_PIXELS[$40*$40]  = kickasm {{ .var pic = LoadPicture("sprite.png", List().add($000000, $ffffff))
-	.for (var x=0;x<64; x++)
-    	.for (var y=0; y<64; y++)
-            .byte (pic.getPixel(x,y)==0) ? 0 : 1
+const byte* SPRITE_PIXELS[$40*$40]  = kickasm {{ .var pic = LoadPicture("tut.png")
+    // palette: rgb->idx
+    .var palette = Hashtable()
+    // RGB value for each palette index
+    .var palList = List()
+    // Next palette index
+    .var nxt_idx = 0;
+    .for (var y=0; y<64; y++) {
+    	.for (var x=0;x<64; x++) {
+            .var rgb = pic.getPixel(x,y);
+            .var idx = palette.get(rgb)
+            .if(idx==null) {
+                .eval idx = nxt_idx++;
+                .eval palette.put(rgb,idx);
+                .eval palList.add(rgb)
+            }
+            // Output pixel index
+            .byte idx
+        }
+    }
+    // Output sprite palette (offset 64*64 bytes=
+    .for(var i=0;i<256;i++) {
+        .var rgb = palList.get(i)
+        .var red = floor(rgb / [256*256])
+        .var green = floor(rgb/256) & 255
+        .var blue = rgb & 255
+        // bits 4-8: green, bits 0-3 blue
+        .byte (green/16)>>4 | blue/16
+        // bits bits 0-3 red
+        .byte red/16
+    }
+
  }}
 const nomodify dword SPRITE_PIXELS_VRAM = $8000
 const nomodify byte VERA_ADDRSEL = 1
@@ -243,6 +280,7 @@ const nomodify byte* VERA_DC_VIDEO = (byte*)$9f29
 const nomodify byte* VERA_IEN = (byte*)$9f26
 const nomodify byte VERA_INC_1 = $10
 const nomodify byte* VERA_ISR = (byte*)$9f27
+const nomodify dword VERA_PALETTE = $1fa00
 const byte VERA_SPRITES_ENABLE = $40
 const nomodify word VERA_SPRITE_8BPP = $8000
 const nomodify dword VERA_SPRITE_ATTR = $1fc00
@@ -306,9 +344,9 @@ byte* irq_vsync::vram_sprite_pos#7
 byte* irq_vsync::vram_sprite_pos#8
 void main()
 byte~ main::$0
-bool~ main::$4
-byte~ main::$5
-byte~ main::$7
+bool~ main::$5
+byte~ main::$6
+byte~ main::$8
 byte main::s
 byte main::s#0
 byte main::s#1
@@ -337,6 +375,7 @@ word memcpy_to_vram::num#0
 word memcpy_to_vram::num#1
 word memcpy_to_vram::num#2
 word memcpy_to_vram::num#3
+word memcpy_to_vram::num#4
 byte* memcpy_to_vram::s
 byte* memcpy_to_vram::s#0
 byte* memcpy_to_vram::s#1
@@ -347,43 +386,45 @@ void* memcpy_to_vram::src#0
 void* memcpy_to_vram::src#1
 void* memcpy_to_vram::src#2
 void* memcpy_to_vram::src#3
+void* memcpy_to_vram::src#4
 byte memcpy_to_vram::vbank
 byte memcpy_to_vram::vbank#0
 byte memcpy_to_vram::vbank#1
 byte memcpy_to_vram::vbank#2
 byte memcpy_to_vram::vbank#3
+byte memcpy_to_vram::vbank#4
 void* memcpy_to_vram::vdest
 void* memcpy_to_vram::vdest#0
 void* memcpy_to_vram::vdest#1
 void* memcpy_to_vram::vdest#2
 void* memcpy_to_vram::vdest#3
+void* memcpy_to_vram::vdest#4
 volatile word sin_idx_x loadstore
 volatile word sin_idx_y loadstore
 
 Adding number conversion cast (unumber) <SPRITE_PIXELS_VRAM/$20 in 
 Adding number conversion cast (unumber) $20 in 
-Adding number conversion cast (unumber) $80 in main::$4 = main::s#2 < $80
+Adding number conversion cast (unumber) $40*$40 in memcpy_to_vram::src#1 = (void*)SPRITE_PIXELS+$40*$40
+Adding number conversion cast (unumber) $200 in memcpy_to_vram::num#1 = $200
+Adding number conversion cast (unumber) $20 in main::$5 = main::s#2 < $20
 Adding number conversion cast (unumber) $a in *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a
 Adding number conversion cast (unumber) $a in *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a
-Adding number conversion cast (unumber) $f1 in irq_vsync::$0 = sin_idx_x == $f1
 Adding number conversion cast (unumber) $ffff in irq_vsync::$2 = sin_idx_y == $ffff
 Adding number conversion cast (unumber) 0 in sin_idx_x = 0
 Adding number conversion cast (unumber) 2 in irq_vsync::vram_sprite_pos#0 = (byte*)<VERA_SPRITE_ATTR+2
-Adding number conversion cast (unumber) $fb-1 in sin_idx_y = $fb-1
-Adding number conversion cast (unumber) $80 in irq_vsync::$4 = irq_vsync::s#2 < $80
-Adding number conversion cast (unumber) 2 in memcpy_to_vram::src#2 = (void*)&SPRITE_ATTR+2
-Adding number conversion cast (unumber) 4 in memcpy_to_vram::num#2 = 4
-Adding number conversion cast (unumber) 3 in irq_vsync::i_x#1 = irq_vsync::i_x#4 + 3
-Adding number conversion cast (unumber) $f1 in irq_vsync::$7 = irq_vsync::i_x#1 >= $f1
+Adding number conversion cast (unumber) SINY_LEN-1 in sin_idx_y = SINY_LEN-1
+Adding number conversion cast (unumber) 1 in sin_idx_y = ((unumber)) SINY_LEN-1
+Adding number conversion cast (unumber) $20 in irq_vsync::$4 = irq_vsync::s#2 < $20
+Adding number conversion cast (unumber) 2 in memcpy_to_vram::src#3 = (void*)&SPRITE_ATTR+2
+Adding number conversion cast (unumber) 4 in memcpy_to_vram::num#3 = 4
+Adding number conversion cast (unumber) 9 in irq_vsync::i_x#1 = irq_vsync::i_x#4 + 9
 Adding number conversion cast (unumber) 5 in irq_vsync::i_y#1 = irq_vsync::i_y#4 + 5
-Adding number conversion cast (unumber) $fb in irq_vsync::$9 = irq_vsync::i_y#1 >= $fb
-Adding number conversion cast (unumber) $f1 in irq_vsync::i_x#2 = irq_vsync::i_x#5 - $f1
-Adding number conversion cast (unumber) $fb in irq_vsync::i_y#2 = irq_vsync::i_y#5 - $fb
 Successful SSA optimization PassNAddNumberTypeConversions
-Inlining cast memcpy_to_vram::s#0 = (byte*)memcpy_to_vram::src#3
+Inlining cast memcpy_to_vram::s#0 = (byte*)memcpy_to_vram::src#4
+Inlining cast memcpy_to_vram::num#1 = (unumber)$200
 Inlining cast sin_idx_x = (unumber)0
-Inlining cast sin_idx_y = (unumber)$fb-1
-Inlining cast memcpy_to_vram::num#2 = (unumber)4
+Inlining cast sin_idx_y = (unumber)SINY_LEN-(unumber)1
+Inlining cast memcpy_to_vram::num#3 = (unumber)4
 Successful SSA optimization Pass2InlineCast
 Simplifying constant pointer cast (byte*) 40736
 Simplifying constant pointer cast (byte*) 40737
@@ -396,45 +437,40 @@ Simplifying constant pointer cast (byte*) 40745
 Simplifying constant pointer cast (void()**) 788
 Simplifying constant integer cast <SPRITE_PIXELS_VRAM/(unumber)$20
 Simplifying constant integer cast $20
-Simplifying constant integer cast $80
+Simplifying constant integer cast $200
+Simplifying constant integer cast $20
 Simplifying constant integer cast $a
 Simplifying constant integer cast $a
-Simplifying constant integer cast $f1
 Simplifying constant integer cast $ffff
 Simplifying constant integer cast 0
 Simplifying constant integer cast 2
-Simplifying constant integer cast $80
+Simplifying constant integer cast SINY_LEN-(unumber)1
+Simplifying constant integer cast 1
+Simplifying constant integer cast $20
 Simplifying constant integer cast 2
 Simplifying constant integer cast 4
-Simplifying constant integer cast 3
-Simplifying constant integer cast $f1
+Simplifying constant integer cast 9
 Simplifying constant integer cast 5
-Simplifying constant integer cast $fb
-Simplifying constant integer cast $f1
-Simplifying constant integer cast $fb
 Successful SSA optimization PassNCastSimplification
 Finalized unsigned number type (byte) $20
-Finalized unsigned number type (byte) $80
+Finalized unsigned number type (word) $200
+Finalized unsigned number type (byte) $20
 Finalized unsigned number type (byte) $a
 Finalized unsigned number type (byte) $a
-Finalized unsigned number type (byte) $f1
 Finalized unsigned number type (word) $ffff
 Finalized unsigned number type (byte) 0
 Finalized unsigned number type (byte) 2
-Finalized unsigned number type (byte) $80
+Finalized unsigned number type (byte) 1
+Finalized unsigned number type (byte) $20
 Finalized unsigned number type (byte) 2
 Finalized unsigned number type (byte) 4
-Finalized unsigned number type (byte) 3
-Finalized unsigned number type (byte) $f1
+Finalized unsigned number type (byte) 9
 Finalized unsigned number type (byte) 5
-Finalized unsigned number type (byte) $fb
-Finalized unsigned number type (byte) $f1
-Finalized unsigned number type (byte) $fb
 Successful SSA optimization PassNFinalizeNumberTypeConversions
-Inversing boolean not [52] irq_vsync::$1 = sin_idx_x != $f1 from [51] irq_vsync::$0 = sin_idx_x == $f1
-Inversing boolean not [56] irq_vsync::$3 = sin_idx_y != $ffff from [55] irq_vsync::$2 = sin_idx_y == $ffff
-Inversing boolean not [82] irq_vsync::$8 = irq_vsync::i_x#1 < $f1 from [81] irq_vsync::$7 = irq_vsync::i_x#1 >= $f1
-Inversing boolean not [89] irq_vsync::$10 = irq_vsync::i_y#1 < $fb from [88] irq_vsync::$9 = irq_vsync::i_y#1 >= $fb
+Inversing boolean not [57] irq_vsync::$1 = sin_idx_x != SINX_LEN from [56] irq_vsync::$0 = sin_idx_x == SINX_LEN
+Inversing boolean not [61] irq_vsync::$3 = sin_idx_y != $ffff from [60] irq_vsync::$2 = sin_idx_y == $ffff
+Inversing boolean not [87] irq_vsync::$8 = irq_vsync::i_x#1 < SINX_LEN from [86] irq_vsync::$7 = irq_vsync::i_x#1 >= SINX_LEN
+Inversing boolean not [94] irq_vsync::$10 = irq_vsync::i_y#1 < SINY_LEN from [93] irq_vsync::$9 = irq_vsync::i_y#1 >= SINY_LEN
 Successful SSA optimization Pass2UnaryNotSimplification
 Alias memcpy_to_vram::end#0 = memcpy_to_vram::$3 
 Alias memcpy_to_vram::s#2 = memcpy_to_vram::s#3 
@@ -442,7 +478,7 @@ Alias memcpy_to_vram::end#1 = memcpy_to_vram::end#2
 Alias memcpy_to_vram::num#0 = main::$0 
 Alias main::vram_sprite_attr#2 = main::vram_sprite_attr#4 main::vram_sprite_attr#3 
 Alias main::s#2 = main::s#4 main::s#3 
-Alias memcpy_to_vram::num#1 = main::$5 
+Alias memcpy_to_vram::num#2 = main::$6 
 Alias irq_vsync::i_x#3 = irq_vsync::i_x#6 irq_vsync::i_x#4 
 Alias irq_vsync::i_y#3 = irq_vsync::i_y#6 irq_vsync::i_y#8 irq_vsync::i_y#7 
 Alias irq_vsync::vram_sprite_pos#2 = irq_vsync::vram_sprite_pos#4 irq_vsync::vram_sprite_pos#3 
@@ -462,35 +498,38 @@ Successful SSA optimization Pass2AliasElimination
 Identical Phi Values memcpy_to_vram::end#1 memcpy_to_vram::end#0
 Successful SSA optimization Pass2IdenticalPhiElimination
 Simple Condition memcpy_to_vram::$4 [13] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2
-Simple Condition main::$4 [26] if(main::s#2<$80) goto main::@2
-Simple Condition irq_vsync::$1 [46] if(sin_idx_x!=$f1) goto irq_vsync::@1
-Simple Condition irq_vsync::$3 [49] if(sin_idx_y!=$ffff) goto irq_vsync::@2
-Simple Condition irq_vsync::$4 [58] if(irq_vsync::s#2<$80) goto irq_vsync::@6
-Simple Condition irq_vsync::$8 [72] if(irq_vsync::i_x#1<$f1) goto irq_vsync::@8
-Simple Condition irq_vsync::$10 [78] if(irq_vsync::i_y#1<$fb) goto irq_vsync::@9
+Simple Condition main::$5 [31] if(main::s#2<$20) goto main::@2
+Simple Condition irq_vsync::$1 [51] if(sin_idx_x!=SINX_LEN) goto irq_vsync::@1
+Simple Condition irq_vsync::$3 [54] if(sin_idx_y!=$ffff) goto irq_vsync::@2
+Simple Condition irq_vsync::$4 [63] if(irq_vsync::s#2<$20) goto irq_vsync::@6
+Simple Condition irq_vsync::$8 [77] if(irq_vsync::i_x#1<SINX_LEN) goto irq_vsync::@8
+Simple Condition irq_vsync::$10 [83] if(irq_vsync::i_y#1<SINY_LEN) goto irq_vsync::@9
 Successful SSA optimization Pass2ConditionalJumpSimplification
 Constant right-side identified [17] memcpy_to_vram::num#0 = sizeof  SPRITE_PIXELS
-Constant right-side identified [55] sin_idx_y = (unumber)$fb-1
 Successful SSA optimization Pass2ConstantRValueConsolidation
 Constant memcpy_to_vram::num#0 = sizeof SPRITE_PIXELS
 Constant memcpy_to_vram::vbank#0 = (byte)>SPRITE_PIXELS_VRAM
 Constant memcpy_to_vram::vdest#0 = (void*)<SPRITE_PIXELS_VRAM
 Constant memcpy_to_vram::src#0 = (void*)SPRITE_PIXELS
+Constant memcpy_to_vram::vbank#1 = (byte)>VERA_PALETTE
+Constant memcpy_to_vram::vdest#1 = (void*)<VERA_PALETTE
+Constant memcpy_to_vram::src#1 = (void*)SPRITE_PIXELS+(word)$40*$40
+Constant memcpy_to_vram::num#1 = $200
 Constant main::vram_sprite_attr#0 = (byte*)<VERA_SPRITE_ATTR
 Constant main::s#0 = 0
-Constant memcpy_to_vram::num#1 = SIZEOF_STRUCT_VERA_SPRITE
-Constant memcpy_to_vram::vbank#1 = (byte)>VERA_SPRITE_ATTR
-Constant memcpy_to_vram::src#1 = (void*)&SPRITE_ATTR
-Constant main::$7 = SIZEOF_STRUCT_VERA_SPRITE
+Constant memcpy_to_vram::num#2 = SIZEOF_STRUCT_VERA_SPRITE
+Constant memcpy_to_vram::vbank#2 = (byte)>VERA_SPRITE_ATTR
+Constant memcpy_to_vram::src#2 = (void*)&SPRITE_ATTR
+Constant main::$8 = SIZEOF_STRUCT_VERA_SPRITE
 Constant irq_vsync::vram_sprite_pos#0 = (byte*)<VERA_SPRITE_ATTR+2
 Constant irq_vsync::s#0 = 0
-Constant memcpy_to_vram::vbank#2 = irq_vsync::vram_sprite_attr_bank
-Constant memcpy_to_vram::src#2 = (void*)&SPRITE_ATTR+2
-Constant memcpy_to_vram::num#2 = 4
+Constant memcpy_to_vram::vbank#3 = irq_vsync::vram_sprite_attr_bank
+Constant memcpy_to_vram::src#3 = (void*)&SPRITE_ATTR+2
+Constant memcpy_to_vram::num#3 = 4
 Constant irq_vsync::$6 = SIZEOF_STRUCT_VERA_SPRITE
 Successful SSA optimization Pass2ConstantIdentification
-De-inlining pointer[w] to *(pointer+w)   [60] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = SINX[irq_vsync::$11]
-De-inlining pointer[w] to *(pointer+w)   [62] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = SINY[irq_vsync::$12]
+De-inlining pointer[w] to *(pointer+w)   [65] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = SINX[irq_vsync::$11]
+De-inlining pointer[w] to *(pointer+w)   [67] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = SINY[irq_vsync::$12]
 Successful SSA optimization Pass2DeInlineWordDerefIdx
 Simplifying constant evaluating to zero (byte)>SPRITE_PIXELS_VRAM in 
 Successful SSA optimization PassNSimplifyConstantZero
@@ -500,42 +539,50 @@ Resolving array sizeof() sizeof SPRITE_PIXELS
 Successful SSA optimization PassNSizeOfSimplification
 Adding number conversion cast (unumber) $40*$40 in 
 Successful SSA optimization PassNAddNumberTypeConversions
-Inlining Noop Cast [8] memcpy_to_vram::$5 = (byte*)memcpy_to_vram::src#3 keeping memcpy_to_vram::src#3
-Inlining Noop Cast [10] memcpy_to_vram::s#0 = (byte*)memcpy_to_vram::src#3 keeping memcpy_to_vram::src#3
+Inlining Noop Cast [8] memcpy_to_vram::$5 = (byte*)memcpy_to_vram::src#4 keeping memcpy_to_vram::src#4
+Inlining Noop Cast [10] memcpy_to_vram::s#0 = (byte*)memcpy_to_vram::src#4 keeping memcpy_to_vram::src#4
 Successful SSA optimization Pass2NopCastInlining
-Rewriting multiplication to use shift [42] irq_vsync::$11 = irq_vsync::i_x#3 * SIZEOF_WORD
-Rewriting multiplication to use shift [45] irq_vsync::$12 = irq_vsync::i_y#3 * SIZEOF_WORD
+Rewriting multiplication to use shift [43] irq_vsync::$11 = irq_vsync::i_x#3 * SIZEOF_WORD
+Rewriting multiplication to use shift [46] irq_vsync::$12 = irq_vsync::i_y#3 * SIZEOF_WORD
 Successful SSA optimization Pass2MultiplyToShiftRewriting
 Inlining constant with var siblings memcpy_to_vram::num#0
 Inlining constant with var siblings memcpy_to_vram::vbank#0
 Inlining constant with var siblings memcpy_to_vram::vdest#0
 Inlining constant with var siblings memcpy_to_vram::src#0
-Inlining constant with var siblings memcpy_to_vram::num#1
 Inlining constant with var siblings memcpy_to_vram::vbank#1
+Inlining constant with var siblings memcpy_to_vram::vdest#1
 Inlining constant with var siblings memcpy_to_vram::src#1
+Inlining constant with var siblings memcpy_to_vram::num#1
+Inlining constant with var siblings memcpy_to_vram::num#2
 Inlining constant with var siblings memcpy_to_vram::vbank#2
 Inlining constant with var siblings memcpy_to_vram::src#2
-Inlining constant with var siblings memcpy_to_vram::num#2
+Inlining constant with var siblings memcpy_to_vram::vbank#3
+Inlining constant with var siblings memcpy_to_vram::src#3
+Inlining constant with var siblings memcpy_to_vram::num#3
 Inlining constant with var siblings main::vram_sprite_attr#0
 Inlining constant with var siblings main::s#0
 Inlining constant with var siblings irq_vsync::vram_sprite_pos#0
 Inlining constant with var siblings irq_vsync::s#0
 Constant inlined memcpy_to_vram::num#0 = (word)$40*$40*SIZEOF_BYTE
 Constant inlined main::s#0 = 0
+Constant inlined memcpy_to_vram::src#3 = (void*)&SPRITE_ATTR+2
 Constant inlined memcpy_to_vram::vdest#0 = (void*)<SPRITE_PIXELS_VRAM
+Constant inlined memcpy_to_vram::vdest#1 = (void*)<VERA_PALETTE
 Constant inlined irq_vsync::vram_sprite_pos#0 = (byte*)<VERA_SPRITE_ATTR+2
 Constant inlined irq_vsync::s#0 = 0
 Constant inlined irq_vsync::$6 = SIZEOF_STRUCT_VERA_SPRITE
 Constant inlined main::vram_sprite_attr#0 = (byte*)<VERA_SPRITE_ATTR
 Constant inlined memcpy_to_vram::src#0 = (void*)SPRITE_PIXELS
-Constant inlined memcpy_to_vram::src#1 = (void*)&SPRITE_ATTR
+Constant inlined memcpy_to_vram::src#1 = (void*)SPRITE_PIXELS+(word)$40*$40
 Constant inlined memcpy_to_vram::vbank#0 = 0
-Constant inlined memcpy_to_vram::src#2 = (void*)&SPRITE_ATTR+2
-Constant inlined memcpy_to_vram::vbank#1 = (byte)>VERA_SPRITE_ATTR
-Constant inlined memcpy_to_vram::vbank#2 = irq_vsync::vram_sprite_attr_bank
-Constant inlined main::$7 = SIZEOF_STRUCT_VERA_SPRITE
-Constant inlined memcpy_to_vram::num#2 = 4
-Constant inlined memcpy_to_vram::num#1 = SIZEOF_STRUCT_VERA_SPRITE
+Constant inlined memcpy_to_vram::src#2 = (void*)&SPRITE_ATTR
+Constant inlined memcpy_to_vram::vbank#1 = (byte)>VERA_PALETTE
+Constant inlined memcpy_to_vram::vbank#2 = (byte)>VERA_SPRITE_ATTR
+Constant inlined memcpy_to_vram::num#3 = 4
+Constant inlined memcpy_to_vram::num#2 = SIZEOF_STRUCT_VERA_SPRITE
+Constant inlined memcpy_to_vram::vbank#3 = irq_vsync::vram_sprite_attr_bank
+Constant inlined main::$8 = SIZEOF_STRUCT_VERA_SPRITE
+Constant inlined memcpy_to_vram::num#1 = $200
 Successful SSA optimization Pass2ConstantInlining
 Eliminating unused constant SIZEOF_WORD
 Successful SSA optimization PassNEliminateUnusedVars
@@ -545,13 +592,10 @@ Finalized unsigned number type (word) $140
 Finalized unsigned number type (byte) $20
 Finalized unsigned number type (byte) $f0
 Finalized unsigned number type (byte) $20
-Finalized unsigned number type (byte) $f1
-Finalized unsigned number type (byte) $fb
-Finalized unsigned number type (byte) $fb
-Finalized unsigned number type (byte) 1
+Finalized unsigned number type (byte) $40
+Finalized unsigned number type (byte) $40
 Successful SSA optimization PassNFinalizeNumberTypeConversions
 Simplifying constant integer cast $140-$20
-Simplifying constant integer cast $fb-1
 Successful SSA optimization PassNCastSimplification
 Added new block during phi lifting irq_vsync::@13(between irq_vsync::@12 and irq_vsync::@8)
 Added new block during phi lifting irq_vsync::@14(between irq_vsync::@8 and irq_vsync::@9)
@@ -560,15 +604,16 @@ Adding NOP phi() at start of __start::@1
 Adding NOP phi() at start of __start::@2
 Adding NOP phi() at start of main
 Adding NOP phi() at start of main::@5
+Adding NOP phi() at start of main::@6
 CALL GRAPH
 Calls in [__start] to main:4 
 Calls in [irq_vsync] to memcpy_to_vram:30 
-Calls in [main] to memcpy_to_vram:50 memcpy_to_vram:65 
+Calls in [main] to memcpy_to_vram:50 memcpy_to_vram:52 memcpy_to_vram:67 
 
 Created 13 initial phi equivalence classes
 Coalesced [15] irq_vsync::i_x#10 = irq_vsync::i_x#0
 Coalesced [16] irq_vsync::i_y#10 = irq_vsync::i_y#0
-Coalesced [29] memcpy_to_vram::vdest#4 = memcpy_to_vram::vdest#2
+Coalesced [29] memcpy_to_vram::vdest#5 = memcpy_to_vram::vdest#3
 Coalesced [35] irq_vsync::i_x#12 = irq_vsync::i_x#2
 Coalesced [40] irq_vsync::i_y#12 = irq_vsync::i_y#2
 Coalesced [43] irq_vsync::s#9 = irq_vsync::s#1
@@ -577,19 +622,20 @@ Coalesced [45] irq_vsync::i_y#11 = irq_vsync::i_y#9
 Coalesced [46] irq_vsync::vram_sprite_pos#9 = irq_vsync::vram_sprite_pos#1
 Coalesced [47] irq_vsync::i_y#13 = irq_vsync::i_y#1
 Coalesced [48] irq_vsync::i_x#13 = irq_vsync::i_x#1
-Coalesced [64] memcpy_to_vram::vdest#5 = memcpy_to_vram::vdest#1
-Coalesced [68] main::s#5 = main::s#1
-Coalesced [69] main::vram_sprite_attr#5 = main::vram_sprite_attr#1
-Coalesced [85] memcpy_to_vram::s#5 = memcpy_to_vram::s#1
+Coalesced [66] memcpy_to_vram::vdest#6 = memcpy_to_vram::vdest#2
+Coalesced [70] main::s#5 = main::s#1
+Coalesced [71] main::vram_sprite_attr#5 = main::vram_sprite_attr#1
+Coalesced [87] memcpy_to_vram::s#5 = memcpy_to_vram::s#1
 Coalesced down to 11 phi equivalence classes
 Culled Empty Block label __start::@2
 Culled Empty Block label irq_vsync::@14
 Culled Empty Block label irq_vsync::@13
-Culled Empty Block label main::@5
-Renumbering block main::@6 to main::@5
+Culled Empty Block label main::@6
+Renumbering block main::@7 to main::@6
 Adding NOP phi() at start of __start
 Adding NOP phi() at start of __start::@1
 Adding NOP phi() at start of main
+Adding NOP phi() at start of main::@5
 
 FINAL CONTROL FLOW GRAPH
 
@@ -612,7 +658,7 @@ __start::@return: scope:[__start]  from __start::@1
 void irq_vsync()
 irq_vsync: scope:[irq_vsync]  from
   [6] sin_idx_x = ++ sin_idx_x
-  [7] if(sin_idx_x!=$f1) goto irq_vsync::@1
+  [7] if(sin_idx_x!=SINX_LEN) goto irq_vsync::@1
   to:irq_vsync::@3
 irq_vsync::@3: scope:[irq_vsync]  from irq_vsync
   [8] sin_idx_x = 0
@@ -622,7 +668,7 @@ irq_vsync::@1: scope:[irq_vsync]  from irq_vsync irq_vsync::@3
   [10] if(sin_idx_y!=$ffff) goto irq_vsync::@2
   to:irq_vsync::@4
 irq_vsync::@4: scope:[irq_vsync]  from irq_vsync::@1
-  [11] sin_idx_y = $fb-1
+  [11] sin_idx_y = SINY_LEN-1
   to:irq_vsync::@2
 irq_vsync::@2: scope:[irq_vsync]  from irq_vsync::@1 irq_vsync::@4
   [12] irq_vsync::i_x#0 = sin_idx_x
@@ -633,7 +679,7 @@ irq_vsync::@5: scope:[irq_vsync]  from irq_vsync::@2 irq_vsync::@9
   [14] irq_vsync::i_y#3 = phi( irq_vsync::@2/irq_vsync::i_y#0, irq_vsync::@9/irq_vsync::i_y#9 )
   [14] irq_vsync::i_x#3 = phi( irq_vsync::@2/irq_vsync::i_x#0, irq_vsync::@9/irq_vsync::i_x#7 )
   [14] irq_vsync::s#2 = phi( irq_vsync::@2/0, irq_vsync::@9/irq_vsync::s#1 )
-  [15] if(irq_vsync::s#2<$80) goto irq_vsync::@6
+  [15] if(irq_vsync::s#2<$20) goto irq_vsync::@6
   to:irq_vsync::@7
 irq_vsync::@7: scope:[irq_vsync]  from irq_vsync::@5
   [16] *VERA_ISR = VERA_VSYNC
@@ -649,24 +695,24 @@ irq_vsync::@6: scope:[irq_vsync]  from irq_vsync::@5
   [22] irq_vsync::$12 = irq_vsync::i_y#3 << 1
   [23] irq_vsync::$14 = SINY + irq_vsync::$12
   [24] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *irq_vsync::$14
-  [25] memcpy_to_vram::vdest#2 = (void*)irq_vsync::vram_sprite_pos#2
+  [25] memcpy_to_vram::vdest#3 = (void*)irq_vsync::vram_sprite_pos#2
   [26] call memcpy_to_vram 
   to:irq_vsync::@12
 irq_vsync::@12: scope:[irq_vsync]  from irq_vsync::@6
   [27] irq_vsync::vram_sprite_pos#1 = irq_vsync::vram_sprite_pos#2 + SIZEOF_STRUCT_VERA_SPRITE
-  [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 3
-  [29] if(irq_vsync::i_x#1<$f1) goto irq_vsync::@8
+  [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 9
+  [29] if(irq_vsync::i_x#1<SINX_LEN) goto irq_vsync::@8
   to:irq_vsync::@10
 irq_vsync::@10: scope:[irq_vsync]  from irq_vsync::@12
-  [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - $f1
+  [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - SINX_LEN
   to:irq_vsync::@8
 irq_vsync::@8: scope:[irq_vsync]  from irq_vsync::@10 irq_vsync::@12
   [31] irq_vsync::i_x#7 = phi( irq_vsync::@10/irq_vsync::i_x#2, irq_vsync::@12/irq_vsync::i_x#1 )
   [32] irq_vsync::i_y#1 = irq_vsync::i_y#3 + 5
-  [33] if(irq_vsync::i_y#1<$fb) goto irq_vsync::@9
+  [33] if(irq_vsync::i_y#1<SINY_LEN) goto irq_vsync::@9
   to:irq_vsync::@11
 irq_vsync::@11: scope:[irq_vsync]  from irq_vsync::@8
-  [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - $fb
+  [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - SINY_LEN
   to:irq_vsync::@9
 irq_vsync::@9: scope:[irq_vsync]  from irq_vsync::@11 irq_vsync::@8
   [35] irq_vsync::i_y#9 = phi( irq_vsync::@11/irq_vsync::i_y#2, irq_vsync::@8/irq_vsync::i_y#1 )
@@ -677,66 +723,70 @@ void main()
 main: scope:[main]  from __start::@1
   [37] phi()
   [38] call memcpy_to_vram 
+  to:main::@5
+main::@5: scope:[main]  from main
+  [39] phi()
+  [40] call memcpy_to_vram 
   to:main::@1
-main::@1: scope:[main]  from main main::@5
-  [39] main::vram_sprite_attr#2 = phi( main/(byte*)<VERA_SPRITE_ATTR, main::@5/main::vram_sprite_attr#1 )
-  [39] main::s#2 = phi( main/0, main::@5/main::s#1 )
-  [40] if(main::s#2<$80) goto main::@2
+main::@1: scope:[main]  from main::@5 main::@6
+  [41] main::vram_sprite_attr#2 = phi( main::@5/(byte*)<VERA_SPRITE_ATTR, main::@6/main::vram_sprite_attr#1 )
+  [41] main::s#2 = phi( main::@5/0, main::@6/main::s#1 )
+  [42] if(main::s#2<$20) goto main::@2
   to:main::@3
 main::@3: scope:[main]  from main::@1
-  [41] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL
-  [42] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE
+  [43] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL
+  [44] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE
   to:main::SEI1
 main::SEI1: scope:[main]  from main::@3
   asm { sei  }
   to:main::@4
 main::@4: scope:[main]  from main::SEI1
-  [44] *KERNEL_IRQ = &irq_vsync
-  [45] *VERA_IEN = VERA_VSYNC
+  [46] *KERNEL_IRQ = &irq_vsync
+  [47] *VERA_IEN = VERA_VSYNC
   to:main::CLI1
 main::CLI1: scope:[main]  from main::@4
   asm { cli  }
   to:main::@return
 main::@return: scope:[main]  from main::CLI1
-  [47] return 
+  [49] return 
   to:@return
 main::@2: scope:[main]  from main::@1
-  [48] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a
-  [49] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a
-  [50] memcpy_to_vram::vdest#1 = (void*)main::vram_sprite_attr#2
-  [51] call memcpy_to_vram 
-  to:main::@5
-main::@5: scope:[main]  from main::@2
-  [52] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE
-  [53] main::s#1 = ++ main::s#2
+  [50] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a
+  [51] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a
+  [52] memcpy_to_vram::vdest#2 = (void*)main::vram_sprite_attr#2
+  [53] call memcpy_to_vram 
+  to:main::@6
+main::@6: scope:[main]  from main::@2
+  [54] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE
+  [55] main::s#1 = ++ main::s#2
   to:main::@1
 
 void memcpy_to_vram(byte memcpy_to_vram::vbank , void* memcpy_to_vram::vdest , void* memcpy_to_vram::src , word memcpy_to_vram::num)
-memcpy_to_vram: scope:[memcpy_to_vram]  from irq_vsync::@6 main main::@2
-  [54] memcpy_to_vram::num#3 = phi( irq_vsync::@6/4, main/(word)$40*$40*SIZEOF_BYTE, main::@2/SIZEOF_STRUCT_VERA_SPRITE )
-  [54] memcpy_to_vram::src#3 = phi( irq_vsync::@6/(void*)&SPRITE_ATTR+2, main/(void*)SPRITE_PIXELS, main::@2/(void*)&SPRITE_ATTR )
-  [54] memcpy_to_vram::vbank#3 = phi( irq_vsync::@6/irq_vsync::vram_sprite_attr_bank, main/0, main::@2/(byte)>VERA_SPRITE_ATTR )
-  [54] memcpy_to_vram::vdest#3 = phi( irq_vsync::@6/memcpy_to_vram::vdest#2, main/(void*)<SPRITE_PIXELS_VRAM, main::@2/memcpy_to_vram::vdest#1 )
-  [55] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL
-  [56] memcpy_to_vram::$0 = < memcpy_to_vram::vdest#3
-  [57] *VERA_ADDRX_L = memcpy_to_vram::$0
-  [58] memcpy_to_vram::$1 = > memcpy_to_vram::vdest#3
-  [59] *VERA_ADDRX_M = memcpy_to_vram::$1
-  [60] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#3
-  [61] *VERA_ADDRX_H = memcpy_to_vram::$2
-  [62] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#3 + memcpy_to_vram::num#3
-  [63] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#3
+memcpy_to_vram: scope:[memcpy_to_vram]  from irq_vsync::@6 main main::@2 main::@5
+  [56] memcpy_to_vram::num#4 = phi( irq_vsync::@6/4, main/(word)$40*$40*SIZEOF_BYTE, main::@2/SIZEOF_STRUCT_VERA_SPRITE, main::@5/$200 )
+  [56] memcpy_to_vram::src#4 = phi( irq_vsync::@6/(void*)&SPRITE_ATTR+2, main/(void*)SPRITE_PIXELS, main::@2/(void*)&SPRITE_ATTR, main::@5/(void*)SPRITE_PIXELS+(word)$40*$40 )
+  [56] memcpy_to_vram::vbank#4 = phi( irq_vsync::@6/irq_vsync::vram_sprite_attr_bank, main/0, main::@2/(byte)>VERA_SPRITE_ATTR, main::@5/(byte)>VERA_PALETTE )
+  [56] memcpy_to_vram::vdest#4 = phi( irq_vsync::@6/memcpy_to_vram::vdest#3, main/(void*)<SPRITE_PIXELS_VRAM, main::@2/memcpy_to_vram::vdest#2, main::@5/(void*)<VERA_PALETTE )
+  [57] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL
+  [58] memcpy_to_vram::$0 = < memcpy_to_vram::vdest#4
+  [59] *VERA_ADDRX_L = memcpy_to_vram::$0
+  [60] memcpy_to_vram::$1 = > memcpy_to_vram::vdest#4
+  [61] *VERA_ADDRX_M = memcpy_to_vram::$1
+  [62] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#4
+  [63] *VERA_ADDRX_H = memcpy_to_vram::$2
+  [64] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#4 + memcpy_to_vram::num#4
+  [65] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#4
   to:memcpy_to_vram::@1
 memcpy_to_vram::@1: scope:[memcpy_to_vram]  from memcpy_to_vram memcpy_to_vram::@2
-  [64] memcpy_to_vram::s#2 = phi( memcpy_to_vram/memcpy_to_vram::s#4, memcpy_to_vram::@2/memcpy_to_vram::s#1 )
-  [65] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2
+  [66] memcpy_to_vram::s#2 = phi( memcpy_to_vram/memcpy_to_vram::s#4, memcpy_to_vram::@2/memcpy_to_vram::s#1 )
+  [67] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2
   to:memcpy_to_vram::@return
 memcpy_to_vram::@return: scope:[memcpy_to_vram]  from memcpy_to_vram::@1
-  [66] return 
+  [68] return 
   to:@return
 memcpy_to_vram::@2: scope:[memcpy_to_vram]  from memcpy_to_vram::@1
-  [67] *VERA_DATA0 = *memcpy_to_vram::s#2
-  [68] memcpy_to_vram::s#1 = ++ memcpy_to_vram::s#2
+  [69] *VERA_DATA0 = *memcpy_to_vram::s#2
+  [70] memcpy_to_vram::s#1 = ++ memcpy_to_vram::s#2
   to:memcpy_to_vram::@1
 
 
@@ -780,19 +830,19 @@ byte~ memcpy_to_vram::$2 2002.0
 byte* memcpy_to_vram::end
 byte* memcpy_to_vram::end#0 16833.666666666664
 word memcpy_to_vram::num
-word memcpy_to_vram::num#3 125.125
+word memcpy_to_vram::num#4 125.125
 byte* memcpy_to_vram::s
 byte* memcpy_to_vram::s#1 200002.0
 byte* memcpy_to_vram::s#2 133668.3333333333
 byte* memcpy_to_vram::s#4 2002.0
 void* memcpy_to_vram::src
-void* memcpy_to_vram::src#3
+void* memcpy_to_vram::src#4
 byte memcpy_to_vram::vbank
-byte memcpy_to_vram::vbank#3 166.83333333333334
+byte memcpy_to_vram::vbank#4 166.83333333333334
 void* memcpy_to_vram::vdest
-void* memcpy_to_vram::vdest#1 202.0
-void* memcpy_to_vram::vdest#2 22.0
-void* memcpy_to_vram::vdest#3 528.5
+void* memcpy_to_vram::vdest#2 202.0
+void* memcpy_to_vram::vdest#3 22.0
+void* memcpy_to_vram::vdest#4 528.5
 volatile word sin_idx_x loadstore 1.9999999999999998
 volatile word sin_idx_y loadstore 1.714285714285714
 
@@ -803,10 +853,10 @@ Initial phi equivalence classes
 [ irq_vsync::vram_sprite_pos#2 irq_vsync::vram_sprite_pos#1 ]
 [ main::s#2 main::s#1 ]
 [ main::vram_sprite_attr#2 main::vram_sprite_attr#1 ]
-[ memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 memcpy_to_vram::vdest#1 ]
-[ memcpy_to_vram::vbank#3 ]
-[ memcpy_to_vram::src#3 ]
-[ memcpy_to_vram::num#3 ]
+[ memcpy_to_vram::vdest#4 memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 ]
+[ memcpy_to_vram::vbank#4 ]
+[ memcpy_to_vram::src#4 ]
+[ memcpy_to_vram::num#4 ]
 [ memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ]
 Added variable sin_idx_x to live range equivalence class [ sin_idx_x ]
 Added variable sin_idx_y to live range equivalence class [ sin_idx_y ]
@@ -826,10 +876,10 @@ Complete equivalence classes
 [ irq_vsync::vram_sprite_pos#2 irq_vsync::vram_sprite_pos#1 ]
 [ main::s#2 main::s#1 ]
 [ main::vram_sprite_attr#2 main::vram_sprite_attr#1 ]
-[ memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 memcpy_to_vram::vdest#1 ]
-[ memcpy_to_vram::vbank#3 ]
-[ memcpy_to_vram::src#3 ]
-[ memcpy_to_vram::num#3 ]
+[ memcpy_to_vram::vdest#4 memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 ]
+[ memcpy_to_vram::vbank#4 ]
+[ memcpy_to_vram::src#4 ]
+[ memcpy_to_vram::num#4 ]
 [ memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ]
 [ sin_idx_x ]
 [ sin_idx_y ]
@@ -848,10 +898,10 @@ Allocated zp[2]:5 [ irq_vsync::i_y#3 irq_vsync::i_y#0 irq_vsync::i_y#9 irq_vsync
 Allocated zp[2]:7 [ irq_vsync::vram_sprite_pos#2 irq_vsync::vram_sprite_pos#1 ]
 Allocated zp[1]:9 [ main::s#2 main::s#1 ]
 Allocated zp[2]:10 [ main::vram_sprite_attr#2 main::vram_sprite_attr#1 ]
-Allocated zp[2]:12 [ memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 memcpy_to_vram::vdest#1 ]
-Allocated zp[1]:14 [ memcpy_to_vram::vbank#3 ]
-Allocated zp[2]:15 [ memcpy_to_vram::src#3 ]
-Allocated zp[2]:17 [ memcpy_to_vram::num#3 ]
+Allocated zp[2]:12 [ memcpy_to_vram::vdest#4 memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 ]
+Allocated zp[1]:14 [ memcpy_to_vram::vbank#4 ]
+Allocated zp[2]:15 [ memcpy_to_vram::src#4 ]
+Allocated zp[2]:17 [ memcpy_to_vram::num#4 ]
 Allocated zp[2]:19 [ memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ]
 Allocated zp[2]:21 [ sin_idx_x ]
 Allocated zp[2]:23 [ sin_idx_y ]
@@ -867,95 +917,95 @@ Allocated mem[8] [ SPRITE_ATTR ]
 REGISTER UPLIFT POTENTIAL REGISTERS
 Statement [1] sin_idx_x = $77 [ SPRITE_ATTR ] (  [ SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [2] sin_idx_y = $4f [ SPRITE_ATTR ] (  [ SPRITE_ATTR ] { }  ) always clobbers reg byte a 
-Statement [7] if(sin_idx_x!=$f1) goto irq_vsync::@1 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
+Statement [7] if(sin_idx_x!=SINX_LEN) goto irq_vsync::@1 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [8] sin_idx_x = 0 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [9] sin_idx_y = -- sin_idx_y [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [10] if(sin_idx_y!=$ffff) goto irq_vsync::@2 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
-Statement [11] sin_idx_y = $fb-1 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
+Statement [11] sin_idx_y = SINY_LEN-1 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [12] irq_vsync::i_x#0 = sin_idx_x [ sin_idx_y irq_vsync::i_x#0 SPRITE_ATTR ] (  [ sin_idx_y irq_vsync::i_x#0 SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [13] irq_vsync::i_y#0 = sin_idx_y [ irq_vsync::i_x#0 irq_vsync::i_y#0 SPRITE_ATTR ] (  [ irq_vsync::i_x#0 irq_vsync::i_y#0 SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [16] *VERA_ISR = VERA_VSYNC [ ] (  [ ] { }  ) always clobbers reg byte a 
-Statement [19] irq_vsync::$11 = irq_vsync::i_x#3 << 1 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$11 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$11 SPRITE_ATTR ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
+Statement [19] irq_vsync::$11 = irq_vsync::i_x#3 << 1 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$11 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$11 SPRITE_ATTR ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
 Removing always clobbered register reg byte a as potential for zp[1]:2 [ irq_vsync::s#2 irq_vsync::s#1 ]
-Statement [20] irq_vsync::$13 = SINX + irq_vsync::$11 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$13 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$13 SPRITE_ATTR ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [21] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *irq_vsync::$13 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a reg byte y 
+Statement [20] irq_vsync::$13 = SINX + irq_vsync::$11 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$13 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$13 SPRITE_ATTR ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [21] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *irq_vsync::$13 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a reg byte y 
 Removing always clobbered register reg byte y as potential for zp[1]:2 [ irq_vsync::s#2 irq_vsync::s#1 ]
-Statement [22] irq_vsync::$12 = irq_vsync::i_y#3 << 1 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$12 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$12 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [23] irq_vsync::$14 = SINY + irq_vsync::$12 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$14 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$14 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [24] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *irq_vsync::$14 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a reg byte y 
-Statement [25] memcpy_to_vram::vdest#2 = (void*)irq_vsync::vram_sprite_pos#2 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#2 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
+Statement [22] irq_vsync::$12 = irq_vsync::i_y#3 << 1 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$12 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$12 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [23] irq_vsync::$14 = SINY + irq_vsync::$12 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$14 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$14 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [24] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *irq_vsync::$14 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a reg byte y 
+Statement [25] memcpy_to_vram::vdest#3 = (void*)irq_vsync::vram_sprite_pos#2 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#3 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#3 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
 Statement [27] irq_vsync::vram_sprite_pos#1 = irq_vsync::vram_sprite_pos#2 + SIZEOF_STRUCT_VERA_SPRITE [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR ] { }  ) always clobbers reg byte a 
-Statement [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 3 [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] { }  ) always clobbers reg byte a 
-Statement [29] if(irq_vsync::i_x#1<$f1) goto irq_vsync::@8 [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] { }  ) always clobbers reg byte a 
-Statement [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - $f1 [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#2 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#2 ] { }  ) always clobbers reg byte a 
+Statement [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 9 [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] { }  ) always clobbers reg byte a 
+Statement [29] if(irq_vsync::i_x#1<SINX_LEN) goto irq_vsync::@8 [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] { }  ) always clobbers reg byte a 
+Statement [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - SINX_LEN [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#2 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#2 ] { }  ) always clobbers reg byte a 
 Statement [32] irq_vsync::i_y#1 = irq_vsync::i_y#3 + 5 [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] (  [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] { }  ) always clobbers reg byte a 
-Statement [33] if(irq_vsync::i_y#1<$fb) goto irq_vsync::@9 [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] (  [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] { }  ) always clobbers reg byte a 
-Statement [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - $fb [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#2 ] (  [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#2 ] { }  ) always clobbers reg byte a 
-Statement [41] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
-Statement [42] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
-Statement [44] *KERNEL_IRQ = &irq_vsync [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
-Statement [45] *VERA_IEN = VERA_VSYNC [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
-Statement [48] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
+Statement [33] if(irq_vsync::i_y#1<SINY_LEN) goto irq_vsync::@9 [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] (  [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] { }  ) always clobbers reg byte a 
+Statement [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - SINY_LEN [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#2 ] (  [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#2 ] { }  ) always clobbers reg byte a 
+Statement [43] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
+Statement [44] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
+Statement [46] *KERNEL_IRQ = &irq_vsync [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
+Statement [47] *VERA_IEN = VERA_VSYNC [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
+Statement [50] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
 Removing always clobbered register reg byte a as potential for zp[1]:9 [ main::s#2 main::s#1 ]
-Statement [49] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [50] memcpy_to_vram::vdest#1 = (void*)main::vram_sprite_attr#2 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 memcpy_to_vram::vdest#1 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 memcpy_to_vram::vdest#1 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [52] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#1 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#1 ] { }  ) always clobbers reg byte a 
-Statement [55] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL [ SPRITE_ATTR memcpy_to_vram::vdest#3 memcpy_to_vram::vbank#3 memcpy_to_vram::src#3 memcpy_to_vram::num#3 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#3 memcpy_to_vram::vbank#3 memcpy_to_vram::src#3 memcpy_to_vram::num#3 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::vdest#3 memcpy_to_vram::vbank#3 memcpy_to_vram::src#3 memcpy_to_vram::num#3 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::vdest#3 memcpy_to_vram::vbank#3 memcpy_to_vram::src#3 memcpy_to_vram::num#3 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Removing always clobbered register reg byte a as potential for zp[1]:14 [ memcpy_to_vram::vbank#3 ]
-Statement [60] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#3 [ SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::num#3 memcpy_to_vram::$2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::num#3 memcpy_to_vram::$2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::num#3 memcpy_to_vram::$2 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::num#3 memcpy_to_vram::$2 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [62] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#3 + memcpy_to_vram::num#3 [ SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::end#0 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::end#0 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::end#0 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::end#0 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [63] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#3 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [65] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [67] *VERA_DATA0 = *memcpy_to_vram::s#2 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a reg byte y 
+Statement [51] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [52] memcpy_to_vram::vdest#2 = (void*)main::vram_sprite_attr#2 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 memcpy_to_vram::vdest#2 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 memcpy_to_vram::vdest#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [54] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#1 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#1 ] { }  ) always clobbers reg byte a 
+Statement [57] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL [ SPRITE_ATTR memcpy_to_vram::vdest#4 memcpy_to_vram::vbank#4 memcpy_to_vram::src#4 memcpy_to_vram::num#4 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#4 memcpy_to_vram::vbank#4 memcpy_to_vram::src#4 memcpy_to_vram::num#4 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::vdest#4 memcpy_to_vram::vbank#4 memcpy_to_vram::src#4 memcpy_to_vram::num#4 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::vdest#4 memcpy_to_vram::vbank#4 memcpy_to_vram::src#4 memcpy_to_vram::num#4 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::vdest#4 memcpy_to_vram::vbank#4 memcpy_to_vram::src#4 memcpy_to_vram::num#4 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Removing always clobbered register reg byte a as potential for zp[1]:14 [ memcpy_to_vram::vbank#4 ]
+Statement [62] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#4 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::num#4 memcpy_to_vram::$2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::num#4 memcpy_to_vram::$2 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::num#4 memcpy_to_vram::$2 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::num#4 memcpy_to_vram::$2 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::num#4 memcpy_to_vram::$2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [64] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#4 + memcpy_to_vram::num#4 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::end#0 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::end#0 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::end#0 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::end#0 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::end#0 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [65] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#4 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [67] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [69] *VERA_DATA0 = *memcpy_to_vram::s#2 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a reg byte y 
 Removing always clobbered register reg byte y as potential for zp[1]:9 [ main::s#2 main::s#1 ]
 Statement [1] sin_idx_x = $77 [ SPRITE_ATTR ] (  [ SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [2] sin_idx_y = $4f [ SPRITE_ATTR ] (  [ SPRITE_ATTR ] { }  ) always clobbers reg byte a 
-Statement [7] if(sin_idx_x!=$f1) goto irq_vsync::@1 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
+Statement [7] if(sin_idx_x!=SINX_LEN) goto irq_vsync::@1 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [8] sin_idx_x = 0 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [9] sin_idx_y = -- sin_idx_y [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [10] if(sin_idx_y!=$ffff) goto irq_vsync::@2 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
-Statement [11] sin_idx_y = $fb-1 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
+Statement [11] sin_idx_y = SINY_LEN-1 [ sin_idx_x sin_idx_y SPRITE_ATTR ] (  [ sin_idx_x sin_idx_y SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [12] irq_vsync::i_x#0 = sin_idx_x [ sin_idx_y irq_vsync::i_x#0 SPRITE_ATTR ] (  [ sin_idx_y irq_vsync::i_x#0 SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [13] irq_vsync::i_y#0 = sin_idx_y [ irq_vsync::i_x#0 irq_vsync::i_y#0 SPRITE_ATTR ] (  [ irq_vsync::i_x#0 irq_vsync::i_y#0 SPRITE_ATTR ] { }  ) always clobbers reg byte a 
 Statement [16] *VERA_ISR = VERA_VSYNC [ ] (  [ ] { }  ) always clobbers reg byte a 
-Statement [19] irq_vsync::$11 = irq_vsync::i_x#3 << 1 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$11 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$11 SPRITE_ATTR ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [20] irq_vsync::$13 = SINX + irq_vsync::$11 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$13 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$13 SPRITE_ATTR ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [21] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *irq_vsync::$13 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a reg byte y 
-Statement [22] irq_vsync::$12 = irq_vsync::i_y#3 << 1 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$12 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$12 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [23] irq_vsync::$14 = SINY + irq_vsync::$12 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$14 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$14 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [24] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *irq_vsync::$14 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a reg byte y 
-Statement [25] memcpy_to_vram::vdest#2 = (void*)irq_vsync::vram_sprite_pos#2 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#2 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
+Statement [19] irq_vsync::$11 = irq_vsync::i_x#3 << 1 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$11 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$11 SPRITE_ATTR ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [20] irq_vsync::$13 = SINX + irq_vsync::$11 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$13 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 irq_vsync::$13 SPRITE_ATTR ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [21] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *irq_vsync::$13 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a reg byte y 
+Statement [22] irq_vsync::$12 = irq_vsync::i_y#3 << 1 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$12 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$12 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [23] irq_vsync::$14 = SINY + irq_vsync::$12 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$14 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR irq_vsync::$14 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [24] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *irq_vsync::$14 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a reg byte y 
+Statement [25] memcpy_to_vram::vdest#3 = (void*)irq_vsync::vram_sprite_pos#2 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#3 ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#3 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
 Statement [27] irq_vsync::vram_sprite_pos#1 = irq_vsync::vram_sprite_pos#2 + SIZEOF_STRUCT_VERA_SPRITE [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR ] (  [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR ] { }  ) always clobbers reg byte a 
-Statement [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 3 [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] { }  ) always clobbers reg byte a 
-Statement [29] if(irq_vsync::i_x#1<$f1) goto irq_vsync::@8 [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] { }  ) always clobbers reg byte a 
-Statement [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - $f1 [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#2 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#2 ] { }  ) always clobbers reg byte a 
+Statement [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 9 [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] { }  ) always clobbers reg byte a 
+Statement [29] if(irq_vsync::i_x#1<SINX_LEN) goto irq_vsync::@8 [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#1 ] { }  ) always clobbers reg byte a 
+Statement [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - SINX_LEN [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#2 ] (  [ irq_vsync::s#2 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_x#2 ] { }  ) always clobbers reg byte a 
 Statement [32] irq_vsync::i_y#1 = irq_vsync::i_y#3 + 5 [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] (  [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] { }  ) always clobbers reg byte a 
-Statement [33] if(irq_vsync::i_y#1<$fb) goto irq_vsync::@9 [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] (  [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] { }  ) always clobbers reg byte a 
-Statement [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - $fb [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#2 ] (  [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#2 ] { }  ) always clobbers reg byte a 
-Statement [41] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
-Statement [42] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
-Statement [44] *KERNEL_IRQ = &irq_vsync [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
-Statement [45] *VERA_IEN = VERA_VSYNC [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
-Statement [48] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [49] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [50] memcpy_to_vram::vdest#1 = (void*)main::vram_sprite_attr#2 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 memcpy_to_vram::vdest#1 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 memcpy_to_vram::vdest#1 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [52] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#1 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#1 ] { }  ) always clobbers reg byte a 
-Statement [55] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL [ SPRITE_ATTR memcpy_to_vram::vdest#3 memcpy_to_vram::vbank#3 memcpy_to_vram::src#3 memcpy_to_vram::num#3 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#3 memcpy_to_vram::vbank#3 memcpy_to_vram::src#3 memcpy_to_vram::num#3 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::vdest#3 memcpy_to_vram::vbank#3 memcpy_to_vram::src#3 memcpy_to_vram::num#3 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::vdest#3 memcpy_to_vram::vbank#3 memcpy_to_vram::src#3 memcpy_to_vram::num#3 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [60] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#3 [ SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::num#3 memcpy_to_vram::$2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::num#3 memcpy_to_vram::$2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::num#3 memcpy_to_vram::$2 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::num#3 memcpy_to_vram::$2 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [62] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#3 + memcpy_to_vram::num#3 [ SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::end#0 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::end#0 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::end#0 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::src#3 memcpy_to_vram::end#0 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [63] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#3 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [65] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a 
-Statement [67] *VERA_DATA0 = *memcpy_to_vram::s#2 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#3 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:51 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#1 = memcpy_to_vram::vdest#3 } }  ) always clobbers reg byte a reg byte y 
+Statement [33] if(irq_vsync::i_y#1<SINY_LEN) goto irq_vsync::@9 [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] (  [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#1 ] { }  ) always clobbers reg byte a 
+Statement [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - SINY_LEN [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#2 ] (  [ irq_vsync::s#2 irq_vsync::i_x#7 irq_vsync::vram_sprite_pos#1 SPRITE_ATTR irq_vsync::i_y#2 ] { }  ) always clobbers reg byte a 
+Statement [43] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
+Statement [44] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
+Statement [46] *KERNEL_IRQ = &irq_vsync [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
+Statement [47] *VERA_IEN = VERA_VSYNC [ ] ( main:4 [ ] { }  ) always clobbers reg byte a 
+Statement [50] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [51] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [52] memcpy_to_vram::vdest#2 = (void*)main::vram_sprite_attr#2 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 memcpy_to_vram::vdest#2 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#2 memcpy_to_vram::vdest#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [54] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#1 ] ( main:4 [ SPRITE_ATTR main::s#2 main::vram_sprite_attr#1 ] { }  ) always clobbers reg byte a 
+Statement [57] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL [ SPRITE_ATTR memcpy_to_vram::vdest#4 memcpy_to_vram::vbank#4 memcpy_to_vram::src#4 memcpy_to_vram::num#4 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::vdest#4 memcpy_to_vram::vbank#4 memcpy_to_vram::src#4 memcpy_to_vram::num#4 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::vdest#4 memcpy_to_vram::vbank#4 memcpy_to_vram::src#4 memcpy_to_vram::num#4 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::vdest#4 memcpy_to_vram::vbank#4 memcpy_to_vram::src#4 memcpy_to_vram::num#4 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::vdest#4 memcpy_to_vram::vbank#4 memcpy_to_vram::src#4 memcpy_to_vram::num#4 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [62] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#4 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::num#4 memcpy_to_vram::$2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::num#4 memcpy_to_vram::$2 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::num#4 memcpy_to_vram::$2 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::num#4 memcpy_to_vram::$2 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::num#4 memcpy_to_vram::$2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [64] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#4 + memcpy_to_vram::num#4 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::end#0 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::end#0 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::end#0 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::end#0 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::src#4 memcpy_to_vram::end#0 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [65] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#4 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#4 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [67] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a 
+Statement [69] *VERA_DATA0 = *memcpy_to_vram::s#2 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] ( memcpy_to_vram:26 [ irq_vsync::s#2 irq_vsync::i_x#3 irq_vsync::i_y#3 irq_vsync::vram_sprite_pos#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#4 } }  main:4::memcpy_to_vram:38 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:40 [ SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { }  main:4::memcpy_to_vram:53 [ main::s#2 main::vram_sprite_attr#2 SPRITE_ATTR memcpy_to_vram::end#0 memcpy_to_vram::s#2 ] { { memcpy_to_vram::vdest#2 = memcpy_to_vram::vdest#4 } }  ) always clobbers reg byte a reg byte y 
 Potential registers zp[1]:2 [ irq_vsync::s#2 irq_vsync::s#1 ] : zp[1]:2 , reg byte x , 
 Potential registers zp[2]:3 [ irq_vsync::i_x#3 irq_vsync::i_x#0 irq_vsync::i_x#7 irq_vsync::i_x#2 irq_vsync::i_x#1 ] : zp[2]:3 , 
 Potential registers zp[2]:5 [ irq_vsync::i_y#3 irq_vsync::i_y#0 irq_vsync::i_y#9 irq_vsync::i_y#2 irq_vsync::i_y#1 ] : zp[2]:5 , 
 Potential registers zp[2]:7 [ irq_vsync::vram_sprite_pos#2 irq_vsync::vram_sprite_pos#1 ] : zp[2]:7 , 
 Potential registers zp[1]:9 [ main::s#2 main::s#1 ] : zp[1]:9 , reg byte x , 
 Potential registers zp[2]:10 [ main::vram_sprite_attr#2 main::vram_sprite_attr#1 ] : zp[2]:10 , 
-Potential registers zp[2]:12 [ memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 memcpy_to_vram::vdest#1 ] : zp[2]:12 , 
-Potential registers zp[1]:14 [ memcpy_to_vram::vbank#3 ] : zp[1]:14 , reg byte x , reg byte y , 
-Potential registers zp[2]:15 [ memcpy_to_vram::src#3 ] : zp[2]:15 , 
-Potential registers zp[2]:17 [ memcpy_to_vram::num#3 ] : zp[2]:17 , 
+Potential registers zp[2]:12 [ memcpy_to_vram::vdest#4 memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 ] : zp[2]:12 , 
+Potential registers zp[1]:14 [ memcpy_to_vram::vbank#4 ] : zp[1]:14 , reg byte x , reg byte y , 
+Potential registers zp[2]:15 [ memcpy_to_vram::src#4 ] : zp[2]:15 , 
+Potential registers zp[2]:17 [ memcpy_to_vram::num#4 ] : zp[2]:17 , 
 Potential registers zp[2]:19 [ memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ] : zp[2]:19 , 
 Potential registers zp[2]:21 [ sin_idx_x ] : zp[2]:21 , 
 Potential registers zp[2]:23 [ sin_idx_y ] : zp[2]:23 , 
@@ -970,7 +1020,7 @@ Potential registers zp[2]:36 [ memcpy_to_vram::end#0 ] : zp[2]:36 ,
 Potential registers mem[8] [ SPRITE_ATTR ] : mem[8] , 
 
 REGISTER UPLIFT SCOPES
-Uplift Scope [memcpy_to_vram] 335,672.33: zp[2]:19 [ memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ] 16,833.67: zp[2]:36 [ memcpy_to_vram::end#0 ] 2,002: zp[1]:33 [ memcpy_to_vram::$0 ] 2,002: zp[1]:34 [ memcpy_to_vram::$1 ] 2,002: zp[1]:35 [ memcpy_to_vram::$2 ] 752.5: zp[2]:12 [ memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 memcpy_to_vram::vdest#1 ] 166.83: zp[1]:14 [ memcpy_to_vram::vbank#3 ] 125.12: zp[2]:17 [ memcpy_to_vram::num#3 ] 0: zp[2]:15 [ memcpy_to_vram::src#3 ] 
+Uplift Scope [memcpy_to_vram] 335,672.33: zp[2]:19 [ memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ] 16,833.67: zp[2]:36 [ memcpy_to_vram::end#0 ] 2,002: zp[1]:33 [ memcpy_to_vram::$0 ] 2,002: zp[1]:34 [ memcpy_to_vram::$1 ] 2,002: zp[1]:35 [ memcpy_to_vram::$2 ] 752.5: zp[2]:12 [ memcpy_to_vram::vdest#4 memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 ] 166.83: zp[1]:14 [ memcpy_to_vram::vbank#4 ] 125.12: zp[2]:17 [ memcpy_to_vram::num#4 ] 0: zp[2]:15 [ memcpy_to_vram::src#4 ] 
 Uplift Scope [main] 245.29: zp[1]:9 [ main::s#2 main::s#1 ] 134.67: zp[2]:10 [ main::vram_sprite_attr#2 main::vram_sprite_attr#1 ] 
 Uplift Scope [irq_vsync] 66.83: zp[2]:5 [ irq_vsync::i_y#3 irq_vsync::i_y#0 irq_vsync::i_y#9 irq_vsync::i_y#2 irq_vsync::i_y#1 ] 54.68: zp[2]:3 [ irq_vsync::i_x#3 irq_vsync::i_x#0 irq_vsync::i_x#7 irq_vsync::i_x#2 irq_vsync::i_x#1 ] 23.74: zp[1]:2 [ irq_vsync::s#2 irq_vsync::s#1 ] 22: zp[2]:25 [ irq_vsync::$11 ] 22: zp[2]:27 [ irq_vsync::$13 ] 22: zp[2]:29 [ irq_vsync::$12 ] 22: zp[2]:31 [ irq_vsync::$14 ] 4.4: zp[2]:7 [ irq_vsync::vram_sprite_pos#2 irq_vsync::vram_sprite_pos#1 ] 
 Uplift Scope [] 2: zp[2]:21 [ sin_idx_x ] 1.71: zp[2]:23 [ sin_idx_y ] 0: mem[8] [ SPRITE_ATTR ] 
@@ -978,24 +1028,24 @@ Uplift Scope [VERA_SPRITE]
 Uplift Scope [MOS6522_VIA] 
 Uplift Scope [__start] 
 
-Uplifting [memcpy_to_vram] best 9419 combination zp[2]:19 [ memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ] zp[2]:36 [ memcpy_to_vram::end#0 ] reg byte a [ memcpy_to_vram::$0 ] reg byte a [ memcpy_to_vram::$1 ] reg byte a [ memcpy_to_vram::$2 ] zp[2]:12 [ memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 memcpy_to_vram::vdest#1 ] reg byte x [ memcpy_to_vram::vbank#3 ] zp[2]:17 [ memcpy_to_vram::num#3 ] zp[2]:15 [ memcpy_to_vram::src#3 ] 
+Uplifting [memcpy_to_vram] best 9460 combination zp[2]:19 [ memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ] zp[2]:36 [ memcpy_to_vram::end#0 ] reg byte a [ memcpy_to_vram::$0 ] reg byte a [ memcpy_to_vram::$1 ] reg byte a [ memcpy_to_vram::$2 ] zp[2]:12 [ memcpy_to_vram::vdest#4 memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 ] reg byte x [ memcpy_to_vram::vbank#4 ] zp[2]:17 [ memcpy_to_vram::num#4 ] zp[2]:15 [ memcpy_to_vram::src#4 ] 
 Limited combination testing to 100 combinations of 192 possible.
-Uplifting [main] best 9419 combination zp[1]:9 [ main::s#2 main::s#1 ] zp[2]:10 [ main::vram_sprite_attr#2 main::vram_sprite_attr#1 ] 
-Uplifting [irq_vsync] best 9419 combination zp[2]:5 [ irq_vsync::i_y#3 irq_vsync::i_y#0 irq_vsync::i_y#9 irq_vsync::i_y#2 irq_vsync::i_y#1 ] zp[2]:3 [ irq_vsync::i_x#3 irq_vsync::i_x#0 irq_vsync::i_x#7 irq_vsync::i_x#2 irq_vsync::i_x#1 ] zp[1]:2 [ irq_vsync::s#2 irq_vsync::s#1 ] zp[2]:25 [ irq_vsync::$11 ] zp[2]:27 [ irq_vsync::$13 ] zp[2]:29 [ irq_vsync::$12 ] zp[2]:31 [ irq_vsync::$14 ] zp[2]:7 [ irq_vsync::vram_sprite_pos#2 irq_vsync::vram_sprite_pos#1 ] 
-Uplifting [] best 9419 combination zp[2]:21 [ sin_idx_x ] zp[2]:23 [ sin_idx_y ] mem[8] [ SPRITE_ATTR ] 
-Uplifting [VERA_SPRITE] best 9419 combination 
-Uplifting [MOS6522_VIA] best 9419 combination 
-Uplifting [__start] best 9419 combination 
+Uplifting [main] best 9460 combination zp[1]:9 [ main::s#2 main::s#1 ] zp[2]:10 [ main::vram_sprite_attr#2 main::vram_sprite_attr#1 ] 
+Uplifting [irq_vsync] best 9460 combination zp[2]:5 [ irq_vsync::i_y#3 irq_vsync::i_y#0 irq_vsync::i_y#9 irq_vsync::i_y#2 irq_vsync::i_y#1 ] zp[2]:3 [ irq_vsync::i_x#3 irq_vsync::i_x#0 irq_vsync::i_x#7 irq_vsync::i_x#2 irq_vsync::i_x#1 ] zp[1]:2 [ irq_vsync::s#2 irq_vsync::s#1 ] zp[2]:25 [ irq_vsync::$11 ] zp[2]:27 [ irq_vsync::$13 ] zp[2]:29 [ irq_vsync::$12 ] zp[2]:31 [ irq_vsync::$14 ] zp[2]:7 [ irq_vsync::vram_sprite_pos#2 irq_vsync::vram_sprite_pos#1 ] 
+Uplifting [] best 9460 combination zp[2]:21 [ sin_idx_x ] zp[2]:23 [ sin_idx_y ] mem[8] [ SPRITE_ATTR ] 
+Uplifting [VERA_SPRITE] best 9460 combination 
+Uplifting [MOS6522_VIA] best 9460 combination 
+Uplifting [__start] best 9460 combination 
 Attempting to uplift remaining variables inzp[1]:9 [ main::s#2 main::s#1 ]
-Uplifting [main] best 9419 combination zp[1]:9 [ main::s#2 main::s#1 ] 
+Uplifting [main] best 9460 combination zp[1]:9 [ main::s#2 main::s#1 ] 
 Attempting to uplift remaining variables inzp[1]:2 [ irq_vsync::s#2 irq_vsync::s#1 ]
-Uplifting [irq_vsync] best 9419 combination zp[1]:2 [ irq_vsync::s#2 irq_vsync::s#1 ] 
-Coalescing zero page register [ zp[2]:15 [ memcpy_to_vram::src#3 ] ] with [ zp[2]:19 [ memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ] ] - score: 1
-Coalescing zero page register [ zp[2]:17 [ memcpy_to_vram::num#3 ] ] with [ zp[2]:36 [ memcpy_to_vram::end#0 ] ] - score: 1
+Uplifting [irq_vsync] best 9460 combination zp[1]:2 [ irq_vsync::s#2 irq_vsync::s#1 ] 
+Coalescing zero page register [ zp[2]:15 [ memcpy_to_vram::src#4 ] ] with [ zp[2]:19 [ memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ] ] - score: 1
+Coalescing zero page register [ zp[2]:17 [ memcpy_to_vram::num#4 ] ] with [ zp[2]:36 [ memcpy_to_vram::end#0 ] ] - score: 1
 Coalescing zero page register [ zp[2]:25 [ irq_vsync::$11 ] ] with [ zp[2]:27 [ irq_vsync::$13 ] ] - score: 1
 Coalescing zero page register [ zp[2]:29 [ irq_vsync::$12 ] ] with [ zp[2]:31 [ irq_vsync::$14 ] ] - score: 1
-Allocated (was zp[2]:15) zp[2]:14 [ memcpy_to_vram::src#3 memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ]
-Allocated (was zp[2]:17) zp[2]:16 [ memcpy_to_vram::num#3 memcpy_to_vram::end#0 ]
+Allocated (was zp[2]:15) zp[2]:14 [ memcpy_to_vram::src#4 memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ]
+Allocated (was zp[2]:17) zp[2]:16 [ memcpy_to_vram::num#4 memcpy_to_vram::end#0 ]
 Allocated (was zp[2]:21) zp[2]:18 [ sin_idx_x ]
 Allocated (was zp[2]:23) zp[2]:20 [ sin_idx_y ]
 Allocated (was zp[2]:25) zp[2]:22 [ irq_vsync::$11 irq_vsync::$13 ]
@@ -1004,11 +1054,11 @@ Allocated (was zp[2]:29) zp[2]:24 [ irq_vsync::$12 irq_vsync::$14 ]
 ASSEMBLER BEFORE OPTIMIZATION
   // File Comments
 // Example program for the Commander X16
-// Displays some sprites - exceeding the per-line limits of the CX16
+// Displays 32 64*64 TUT sprites
   // Upstart
 .cpu _65c02
   // Commodore 64 PRG executable file
-.file [name="sprite.prg", type="prg", segments="Program"]
+.file [name="sprites.prg", type="prg", segments="Program"]
 .segmentdef Program [segments="Basic, Code, Data"]
 .segmentdef Basic [start=$0801]
 .segmentdef Code [start=$80d]
@@ -1023,12 +1073,22 @@ ASSEMBLER BEFORE OPTIMIZATION
   .const VERA_DCSEL = 2
   .const VERA_ADDRSEL = 1
   .const VERA_VSYNC = 1
-  // Sprite Attributes address in VERA VRAM
+  // VERA Palette address in VRAM  $1FA00 - $1FBFF
+  // 256 entries of 2 bytes
+  // byte 0 bits 4-7: Green
+  // byte 0 bits 0-3: Blue
+  // byte 1 bits 0-3: Red
+  .const VERA_PALETTE = $1fa00
+  // Sprite Attributes address in VERA VRAM $1FC00 - $1FFFF
   .const VERA_SPRITE_ATTR = $1fc00
   // 8BPP sprite mode (add to VERA_SPRITE.ADDR to enable)
   .const VERA_SPRITE_8BPP = $8000
   // Address to use for sprite pixels in VRAM
   .const SPRITE_PIXELS_VRAM = $8000
+  // X sine [0;640-64]
+  .const SINX_LEN = $f1
+  // Y sine [0;480-64]
+  .const SINY_LEN = $fb
   .const SIZEOF_STRUCT_VERA_SPRITE = 8
   .const OFFSET_STRUCT_VERA_SPRITE_X = 2
   .const OFFSET_STRUCT_VERA_SPRITE_Y = 4
@@ -1129,12 +1189,12 @@ irq_vsync: {
     bne !+
     inc.z sin_idx_x+1
   !:
-    // [7] if(sin_idx_x!=$f1) goto irq_vsync::@1 -- vwuz1_neq_vwuc1_then_la1 
+    // [7] if(sin_idx_x!=SINX_LEN) goto irq_vsync::@1 -- vwuz1_neq_vwuc1_then_la1 
     lda.z sin_idx_x+1
-    cmp #>$f1
+    cmp #>SINX_LEN
     bne __b1
     lda.z sin_idx_x
-    cmp #<$f1
+    cmp #<SINX_LEN
     bne __b1
     jmp __b3
     // irq_vsync::@3
@@ -1163,10 +1223,10 @@ irq_vsync: {
     jmp __b4
     // irq_vsync::@4
   __b4:
-    // [11] sin_idx_y = $fb-1 -- vwuz1=vbuc1 
-    lda #<$fb-1
+    // [11] sin_idx_y = SINY_LEN-1 -- vwuz1=vbuc1 
+    lda #<SINY_LEN-1
     sta.z sin_idx_y
-    lda #>$fb-1
+    lda #>SINY_LEN-1
     sta.z sin_idx_y+1
     jmp __b2
     // irq_vsync::@2
@@ -1196,17 +1256,14 @@ irq_vsync: {
     jmp __b5
     // irq_vsync::@5
   __b5:
-    // [15] if(irq_vsync::s#2<$80) goto irq_vsync::@6 -- vbuz1_lt_vbuc1_then_la1 
+    // [15] if(irq_vsync::s#2<$20) goto irq_vsync::@6 -- vbuz1_lt_vbuc1_then_la1 
     lda.z s
-    cmp #$80
+    cmp #$20
     bcc __b6
     jmp __b7
     // irq_vsync::@7
   __b7:
     // [16] *VERA_ISR = VERA_VSYNC -- _deref_pbuc1=vbuc2 
-    // Black border
-    //*VERA_CTRL &= ~VERA_DCSEL;
-    //*VERA_DC_BORDER = 0; 
     // Reset the VSYNC interrupt
     lda #VERA_VSYNC
     sta VERA_ISR
@@ -1264,28 +1321,28 @@ irq_vsync: {
     iny
     lda (__14),y
     sta SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y+1
-    // [25] memcpy_to_vram::vdest#2 = (void*)irq_vsync::vram_sprite_pos#2 -- pvoz1=pvoz2 
+    // [25] memcpy_to_vram::vdest#3 = (void*)irq_vsync::vram_sprite_pos#2 -- pvoz1=pvoz2 
     lda.z vram_sprite_pos
     sta.z memcpy_to_vram.vdest
     lda.z vram_sprite_pos+1
     sta.z memcpy_to_vram.vdest+1
     // [26] call memcpy_to_vram 
   // Copy sprite positions to VRAM (the 4 relevant bytes in VERA_SPRITE_ATTR)
-    // [54] phi from irq_vsync::@6 to memcpy_to_vram [phi:irq_vsync::@6->memcpy_to_vram]
+    // [56] phi from irq_vsync::@6 to memcpy_to_vram [phi:irq_vsync::@6->memcpy_to_vram]
   memcpy_to_vram_from___b6:
-    // [54] phi memcpy_to_vram::num#3 = 4 [phi:irq_vsync::@6->memcpy_to_vram#0] -- vwuz1=vbuc1 
+    // [56] phi memcpy_to_vram::num#4 = 4 [phi:irq_vsync::@6->memcpy_to_vram#0] -- vwuz1=vbuc1 
     lda #<4
     sta.z memcpy_to_vram.num
     lda #>4
     sta.z memcpy_to_vram.num+1
-    // [54] phi memcpy_to_vram::src#3 = (void*)&SPRITE_ATTR+2 [phi:irq_vsync::@6->memcpy_to_vram#1] -- pvoz1=pvoc1 
+    // [56] phi memcpy_to_vram::src#4 = (void*)&SPRITE_ATTR+2 [phi:irq_vsync::@6->memcpy_to_vram#1] -- pvoz1=pvoc1 
     lda #<SPRITE_ATTR+2
     sta.z memcpy_to_vram.src
     lda #>SPRITE_ATTR+2
     sta.z memcpy_to_vram.src+1
-    // [54] phi memcpy_to_vram::vbank#3 = irq_vsync::vram_sprite_attr_bank [phi:irq_vsync::@6->memcpy_to_vram#2] -- vbuxx=vbuc1 
+    // [56] phi memcpy_to_vram::vbank#4 = irq_vsync::vram_sprite_attr_bank [phi:irq_vsync::@6->memcpy_to_vram#2] -- vbuxx=vbuc1 
     ldx #vram_sprite_attr_bank
-    // [54] phi memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#2 [phi:irq_vsync::@6->memcpy_to_vram#3] -- register_copy 
+    // [56] phi memcpy_to_vram::vdest#4 = memcpy_to_vram::vdest#3 [phi:irq_vsync::@6->memcpy_to_vram#3] -- register_copy 
     jsr memcpy_to_vram
     jmp __b12
     // irq_vsync::@12
@@ -1298,28 +1355,28 @@ irq_vsync: {
     bcc !+
     inc.z vram_sprite_pos+1
   !:
-    // [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 3 -- vwuz1=vwuz1_plus_vbuc1 
-    lda #3
+    // [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 9 -- vwuz1=vwuz1_plus_vbuc1 
+    lda #9
     clc
     adc.z i_x
     sta.z i_x
     bcc !+
     inc.z i_x+1
   !:
-    // [29] if(irq_vsync::i_x#1<$f1) goto irq_vsync::@8 -- vwuz1_lt_vbuc1_then_la1 
+    // [29] if(irq_vsync::i_x#1<SINX_LEN) goto irq_vsync::@8 -- vwuz1_lt_vbuc1_then_la1 
     lda.z i_x+1
     bne !+
     lda.z i_x
-    cmp #$f1
+    cmp #SINX_LEN
     bcc __b8_from___b12
   !:
     jmp __b10
     // irq_vsync::@10
   __b10:
-    // [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - $f1 -- vwuz1=vwuz1_minus_vbuc1 
+    // [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - SINX_LEN -- vwuz1=vwuz1_minus_vbuc1 
     sec
     lda.z i_x
-    sbc #$f1
+    sbc #SINX_LEN
     sta.z i_x
     lda.z i_x+1
     sbc #0
@@ -1339,20 +1396,20 @@ irq_vsync: {
     bcc !+
     inc.z i_y+1
   !:
-    // [33] if(irq_vsync::i_y#1<$fb) goto irq_vsync::@9 -- vwuz1_lt_vbuc1_then_la1 
+    // [33] if(irq_vsync::i_y#1<SINY_LEN) goto irq_vsync::@9 -- vwuz1_lt_vbuc1_then_la1 
     lda.z i_y+1
     bne !+
     lda.z i_y
-    cmp #$fb
+    cmp #SINY_LEN
     bcc __b9_from___b8
   !:
     jmp __b11
     // irq_vsync::@11
   __b11:
-    // [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - $fb -- vwuz1=vwuz1_minus_vbuc1 
+    // [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - SINY_LEN -- vwuz1=vwuz1_minus_vbuc1 
     sec
     lda.z i_y
-    sbc #$fb
+    sbc #SINY_LEN
     sta.z i_y
     lda.z i_y+1
     sbc #0
@@ -1381,58 +1438,79 @@ main: {
     .label s = 9
     // [38] call memcpy_to_vram 
   // Copy sprite data to VRAM
-    // [54] phi from main to memcpy_to_vram [phi:main->memcpy_to_vram]
+    // [56] phi from main to memcpy_to_vram [phi:main->memcpy_to_vram]
   memcpy_to_vram_from_main:
-    // [54] phi memcpy_to_vram::num#3 = (word)$40*$40*SIZEOF_BYTE [phi:main->memcpy_to_vram#0] -- vwuz1=vwuc1 
+    // [56] phi memcpy_to_vram::num#4 = (word)$40*$40*SIZEOF_BYTE [phi:main->memcpy_to_vram#0] -- vwuz1=vwuc1 
     lda #<$40*$40*SIZEOF_BYTE
     sta.z memcpy_to_vram.num
     lda #>$40*$40*SIZEOF_BYTE
     sta.z memcpy_to_vram.num+1
-    // [54] phi memcpy_to_vram::src#3 = (void*)SPRITE_PIXELS [phi:main->memcpy_to_vram#1] -- pvoz1=pvoc1 
+    // [56] phi memcpy_to_vram::src#4 = (void*)SPRITE_PIXELS [phi:main->memcpy_to_vram#1] -- pvoz1=pvoc1 
     lda #<SPRITE_PIXELS
     sta.z memcpy_to_vram.src
     lda #>SPRITE_PIXELS
     sta.z memcpy_to_vram.src+1
-    // [54] phi memcpy_to_vram::vbank#3 = 0 [phi:main->memcpy_to_vram#2] -- vbuxx=vbuc1 
+    // [56] phi memcpy_to_vram::vbank#4 = 0 [phi:main->memcpy_to_vram#2] -- vbuxx=vbuc1 
     ldx #0
-    // [54] phi memcpy_to_vram::vdest#3 = (void*)<SPRITE_PIXELS_VRAM [phi:main->memcpy_to_vram#3] -- pvoz1=pvoc1 
+    // [56] phi memcpy_to_vram::vdest#4 = (void*)<SPRITE_PIXELS_VRAM [phi:main->memcpy_to_vram#3] -- pvoz1=pvoc1 
     lda #<SPRITE_PIXELS_VRAM&$ffff
     sta.z memcpy_to_vram.vdest
     lda #>SPRITE_PIXELS_VRAM&$ffff
     sta.z memcpy_to_vram.vdest+1
     jsr memcpy_to_vram
-    // [39] phi from main to main::@1 [phi:main->main::@1]
-  __b1_from_main:
-    // [39] phi main::vram_sprite_attr#2 = (byte*)<VERA_SPRITE_ATTR [phi:main->main::@1#0] -- pbuz1=pbuc1 
+    // [39] phi from main to main::@5 [phi:main->main::@5]
+  __b5_from_main:
+    jmp __b5
+    // main::@5
+  __b5:
+    // [40] call memcpy_to_vram 
+  // Copy sprite palette to VRAM
+    // [56] phi from main::@5 to memcpy_to_vram [phi:main::@5->memcpy_to_vram]
+  memcpy_to_vram_from___b5:
+    // [56] phi memcpy_to_vram::num#4 = $200 [phi:main::@5->memcpy_to_vram#0] -- vwuz1=vwuc1 
+    lda #<$200
+    sta.z memcpy_to_vram.num
+    lda #>$200
+    sta.z memcpy_to_vram.num+1
+    // [56] phi memcpy_to_vram::src#4 = (void*)SPRITE_PIXELS+(word)$40*$40 [phi:main::@5->memcpy_to_vram#1] -- pvoz1=pvoc1 
+    lda #<SPRITE_PIXELS+$40*$40
+    sta.z memcpy_to_vram.src
+    lda #>SPRITE_PIXELS+$40*$40
+    sta.z memcpy_to_vram.src+1
+    // [56] phi memcpy_to_vram::vbank#4 = (byte)>VERA_PALETTE [phi:main::@5->memcpy_to_vram#2] -- vbuxx=vbuc1 
+    ldx #VERA_PALETTE>>$10
+    // [56] phi memcpy_to_vram::vdest#4 = (void*)<VERA_PALETTE [phi:main::@5->memcpy_to_vram#3] -- pvoz1=pvoc1 
+    lda #<VERA_PALETTE&$ffff
+    sta.z memcpy_to_vram.vdest
+    lda #>VERA_PALETTE&$ffff
+    sta.z memcpy_to_vram.vdest+1
+    jsr memcpy_to_vram
+    // [41] phi from main::@5 to main::@1 [phi:main::@5->main::@1]
+  __b1_from___b5:
+    // [41] phi main::vram_sprite_attr#2 = (byte*)<VERA_SPRITE_ATTR [phi:main::@5->main::@1#0] -- pbuz1=pbuc1 
     lda #<VERA_SPRITE_ATTR&$ffff
     sta.z vram_sprite_attr
     lda #>VERA_SPRITE_ATTR&$ffff
     sta.z vram_sprite_attr+1
-    // [39] phi main::s#2 = 0 [phi:main->main::@1#1] -- vbuz1=vbuc1 
+    // [41] phi main::s#2 = 0 [phi:main::@5->main::@1#1] -- vbuz1=vbuc1 
     lda #0
     sta.z s
     jmp __b1
     // main::@1
   __b1:
-    // [40] if(main::s#2<$80) goto main::@2 -- vbuz1_lt_vbuc1_then_la1 
+    // [42] if(main::s#2<$20) goto main::@2 -- vbuz1_lt_vbuc1_then_la1 
     lda.z s
-    cmp #$80
+    cmp #$20
     bcc __b2
     jmp __b3
     // main::@3
   __b3:
-    // [41] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL -- _deref_pbuc1=_deref_pbuc1_band_vbuc2 
-    // Make a border
-    //*VERA_CTRL |= VERA_DCSEL;
-    //*VERA_DC_HSTART = 16/4;
-    //*VERA_DC_HSTOP = 624/4;
-    //*VERA_DC_VSTART = 16/2;
-    //*VERA_DC_VSTOP = 464/2;    
+    // [43] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL -- _deref_pbuc1=_deref_pbuc1_band_vbuc2 
     // Enable sprites
     lda #VERA_DCSEL^$ff
     and VERA_CTRL
     sta VERA_CTRL
-    // [42] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2 
+    // [44] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2 
     lda #VERA_SPRITES_ENABLE
     ora VERA_DC_VIDEO
     sta VERA_DC_VIDEO
@@ -1444,12 +1522,12 @@ main: {
     jmp __b4
     // main::@4
   __b4:
-    // [44] *KERNEL_IRQ = &irq_vsync -- _deref_qprc1=pprc2 
+    // [46] *KERNEL_IRQ = &irq_vsync -- _deref_qprc1=pprc2 
     lda #<irq_vsync
     sta KERNEL_IRQ
     lda #>irq_vsync
     sta KERNEL_IRQ+1
-    // [45] *VERA_IEN = VERA_VSYNC -- _deref_pbuc1=vbuc2 
+    // [47] *VERA_IEN = VERA_VSYNC -- _deref_pbuc1=vbuc2 
     lda #VERA_VSYNC
     sta VERA_IEN
     jmp CLI1
@@ -1460,11 +1538,11 @@ main: {
     jmp __breturn
     // main::@return
   __breturn:
-    // [47] return 
+    // [49] return 
     rts
     // main::@2
   __b2:
-    // [48] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a -- _deref_pwuc1=_deref_pwuc1_plus_vwuc2 
+    // [50] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a -- _deref_pwuc1=_deref_pwuc1_plus_vwuc2 
     lda #<$a
     clc
     adc SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X
@@ -1472,7 +1550,7 @@ main: {
     lda #>$a
     adc SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X+1
     sta SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X+1
-    // [49] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a -- _deref_pwuc1=_deref_pwuc1_plus_vwuc2 
+    // [51] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a -- _deref_pwuc1=_deref_pwuc1_plus_vwuc2 
     lda #<$a
     clc
     adc SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y
@@ -1480,32 +1558,32 @@ main: {
     lda #>$a
     adc SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y+1
     sta SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y+1
-    // [50] memcpy_to_vram::vdest#1 = (void*)main::vram_sprite_attr#2 -- pvoz1=pvoz2 
+    // [52] memcpy_to_vram::vdest#2 = (void*)main::vram_sprite_attr#2 -- pvoz1=pvoz2 
     lda.z vram_sprite_attr
     sta.z memcpy_to_vram.vdest
     lda.z vram_sprite_attr+1
     sta.z memcpy_to_vram.vdest+1
-    // [51] call memcpy_to_vram 
-    // [54] phi from main::@2 to memcpy_to_vram [phi:main::@2->memcpy_to_vram]
+    // [53] call memcpy_to_vram 
+    // [56] phi from main::@2 to memcpy_to_vram [phi:main::@2->memcpy_to_vram]
   memcpy_to_vram_from___b2:
-    // [54] phi memcpy_to_vram::num#3 = SIZEOF_STRUCT_VERA_SPRITE [phi:main::@2->memcpy_to_vram#0] -- vwuz1=vbuc1 
+    // [56] phi memcpy_to_vram::num#4 = SIZEOF_STRUCT_VERA_SPRITE [phi:main::@2->memcpy_to_vram#0] -- vwuz1=vbuc1 
     lda #<SIZEOF_STRUCT_VERA_SPRITE
     sta.z memcpy_to_vram.num
     lda #>SIZEOF_STRUCT_VERA_SPRITE
     sta.z memcpy_to_vram.num+1
-    // [54] phi memcpy_to_vram::src#3 = (void*)&SPRITE_ATTR [phi:main::@2->memcpy_to_vram#1] -- pvoz1=pvoc1 
+    // [56] phi memcpy_to_vram::src#4 = (void*)&SPRITE_ATTR [phi:main::@2->memcpy_to_vram#1] -- pvoz1=pvoc1 
     lda #<SPRITE_ATTR
     sta.z memcpy_to_vram.src
     lda #>SPRITE_ATTR
     sta.z memcpy_to_vram.src+1
-    // [54] phi memcpy_to_vram::vbank#3 = (byte)>VERA_SPRITE_ATTR [phi:main::@2->memcpy_to_vram#2] -- vbuxx=vbuc1 
+    // [56] phi memcpy_to_vram::vbank#4 = (byte)>VERA_SPRITE_ATTR [phi:main::@2->memcpy_to_vram#2] -- vbuxx=vbuc1 
     ldx #VERA_SPRITE_ATTR>>$10
-    // [54] phi memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#1 [phi:main::@2->memcpy_to_vram#3] -- register_copy 
+    // [56] phi memcpy_to_vram::vdest#4 = memcpy_to_vram::vdest#2 [phi:main::@2->memcpy_to_vram#3] -- register_copy 
     jsr memcpy_to_vram
-    jmp __b5
-    // main::@5
-  __b5:
-    // [52] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE -- pbuz1=pbuz1_plus_vbuc1 
+    jmp __b6
+    // main::@6
+  __b6:
+    // [54] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE -- pbuz1=pbuz1_plus_vbuc1 
     lda #SIZEOF_STRUCT_VERA_SPRITE
     clc
     adc.z vram_sprite_attr
@@ -1513,12 +1591,12 @@ main: {
     bcc !+
     inc.z vram_sprite_attr+1
   !:
-    // [53] main::s#1 = ++ main::s#2 -- vbuz1=_inc_vbuz1 
+    // [55] main::s#1 = ++ main::s#2 -- vbuz1=_inc_vbuz1 
     inc.z s
-    // [39] phi from main::@5 to main::@1 [phi:main::@5->main::@1]
-  __b1_from___b5:
-    // [39] phi main::vram_sprite_attr#2 = main::vram_sprite_attr#1 [phi:main::@5->main::@1#0] -- register_copy 
-    // [39] phi main::s#2 = main::s#1 [phi:main::@5->main::@1#1] -- register_copy 
+    // [41] phi from main::@6 to main::@1 [phi:main::@6->main::@1]
+  __b1_from___b6:
+    // [41] phi main::vram_sprite_attr#2 = main::vram_sprite_attr#1 [phi:main::@6->main::@1#0] -- register_copy 
+    // [41] phi main::s#2 = main::s#1 [phi:main::@6->main::@1#1] -- register_copy 
     jmp __b1
 }
   // memcpy_to_vram
@@ -1535,26 +1613,26 @@ memcpy_to_vram: {
     .label vdest = $c
     .label src = $e
     .label num = $10
-    // [55] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL -- _deref_pbuc1=_deref_pbuc1_band_vbuc2 
+    // [57] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL -- _deref_pbuc1=_deref_pbuc1_band_vbuc2 
     // Select DATA0
     lda #VERA_ADDRSEL^$ff
     and VERA_CTRL
     sta VERA_CTRL
-    // [56] memcpy_to_vram::$0 = < memcpy_to_vram::vdest#3 -- vbuaa=_lo_pvoz1 
+    // [58] memcpy_to_vram::$0 = < memcpy_to_vram::vdest#4 -- vbuaa=_lo_pvoz1 
     lda.z vdest
-    // [57] *VERA_ADDRX_L = memcpy_to_vram::$0 -- _deref_pbuc1=vbuaa 
+    // [59] *VERA_ADDRX_L = memcpy_to_vram::$0 -- _deref_pbuc1=vbuaa 
     // Set address
     sta VERA_ADDRX_L
-    // [58] memcpy_to_vram::$1 = > memcpy_to_vram::vdest#3 -- vbuaa=_hi_pvoz1 
+    // [60] memcpy_to_vram::$1 = > memcpy_to_vram::vdest#4 -- vbuaa=_hi_pvoz1 
     lda.z vdest+1
-    // [59] *VERA_ADDRX_M = memcpy_to_vram::$1 -- _deref_pbuc1=vbuaa 
+    // [61] *VERA_ADDRX_M = memcpy_to_vram::$1 -- _deref_pbuc1=vbuaa 
     sta VERA_ADDRX_M
-    // [60] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#3 -- vbuaa=vbuc1_bor_vbuxx 
+    // [62] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#4 -- vbuaa=vbuc1_bor_vbuxx 
     txa
     ora #VERA_INC_1
-    // [61] *VERA_ADDRX_H = memcpy_to_vram::$2 -- _deref_pbuc1=vbuaa 
+    // [63] *VERA_ADDRX_H = memcpy_to_vram::$2 -- _deref_pbuc1=vbuaa 
     sta VERA_ADDRX_H
-    // [62] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#3 + memcpy_to_vram::num#3 -- pbuz1=pbuz2_plus_vwuz1 
+    // [64] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#4 + memcpy_to_vram::num#4 -- pbuz1=pbuz2_plus_vwuz1 
     lda.z end
     clc
     adc.z src
@@ -1562,15 +1640,15 @@ memcpy_to_vram: {
     lda.z end+1
     adc.z src+1
     sta.z end+1
-    // [63] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#3
-    // [64] phi from memcpy_to_vram memcpy_to_vram::@2 to memcpy_to_vram::@1 [phi:memcpy_to_vram/memcpy_to_vram::@2->memcpy_to_vram::@1]
+    // [65] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#4
+    // [66] phi from memcpy_to_vram memcpy_to_vram::@2 to memcpy_to_vram::@1 [phi:memcpy_to_vram/memcpy_to_vram::@2->memcpy_to_vram::@1]
   __b1_from_memcpy_to_vram:
   __b1_from___b2:
-    // [64] phi memcpy_to_vram::s#2 = memcpy_to_vram::s#4 [phi:memcpy_to_vram/memcpy_to_vram::@2->memcpy_to_vram::@1#0] -- register_copy 
+    // [66] phi memcpy_to_vram::s#2 = memcpy_to_vram::s#4 [phi:memcpy_to_vram/memcpy_to_vram::@2->memcpy_to_vram::@1#0] -- register_copy 
     jmp __b1
     // memcpy_to_vram::@1
   __b1:
-    // [65] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2 -- pbuz1_neq_pbuz2_then_la1 
+    // [67] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2 -- pbuz1_neq_pbuz2_then_la1 
     lda.z s+1
     cmp.z end+1
     bne __b2
@@ -1580,15 +1658,15 @@ memcpy_to_vram: {
     jmp __breturn
     // memcpy_to_vram::@return
   __breturn:
-    // [66] return 
+    // [68] return 
     rts
     // memcpy_to_vram::@2
   __b2:
-    // [67] *VERA_DATA0 = *memcpy_to_vram::s#2 -- _deref_pbuc1=_deref_pbuz1 
+    // [69] *VERA_DATA0 = *memcpy_to_vram::s#2 -- _deref_pbuc1=_deref_pbuz1 
     ldy #0
     lda (s),y
     sta VERA_DATA0
-    // [68] memcpy_to_vram::s#1 = ++ memcpy_to_vram::s#2 -- pbuz1=_inc_pbuz1 
+    // [70] memcpy_to_vram::s#1 = ++ memcpy_to_vram::s#2 -- pbuz1=_inc_pbuz1 
     inc.z s
     bne !+
     inc.z s+1
@@ -1597,23 +1675,49 @@ memcpy_to_vram: {
 }
   // File Data
 .segment Data
-  // A 64*64 8bpp sprite 
-  .align $100
+  // A 64*64 8bpp TUT sprite 
+  .align $1200
 SPRITE_PIXELS:
-.var pic = LoadPicture("sprite.png", List().add($000000, $ffffff))
-	.for (var x=0;x<64; x++)
-    	.for (var y=0; y<64; y++)
-            .byte (pic.getPixel(x,y)==0) ? 0 : 1
+.var pic = LoadPicture("tut.png")
+    // palette: rgb->idx
+    .var palette = Hashtable()
+    // RGB value for each palette index
+    .var palList = List()
+    // Next palette index
+    .var nxt_idx = 0;
+    .for (var y=0; y<64; y++) {
+    	.for (var x=0;x<64; x++) {
+            .var rgb = pic.getPixel(x,y);
+            .var idx = palette.get(rgb)
+            .if(idx==null) {
+                .eval idx = nxt_idx++;
+                .eval palette.put(rgb,idx);
+                .eval palList.add(rgb)
+            }
+            // Output pixel index
+            .byte idx
+        }
+    }
+    // Output sprite palette (offset 64*64 bytes=
+    .for(var i=0;i<256;i++) {
+        .var rgb = palList.get(i)
+        .var red = floor(rgb / [256*256])
+        .var green = floor(rgb/256) & 255
+        .var blue = rgb & 255
+        // bits 4-8: green, bits 0-3 blue
+        .byte (green/16)>>4 | blue/16
+        // bits bits 0-3 red
+        .byte red/16
+    }
+
 
-  // X sine [0;640-64]
   .align $100
 SINX:
-.fillword 256, 288+288*sin(i*2*PI/241)
+.fillword 256, 288+288*sin(i*2*PI/SINX_LEN)
 
-  // Y sine [0;480-64]
   .align $100
 SINY:
-.fillword 256, 208+208*sin(i*2*PI/251)
+.fillword 256, 208+208*sin(i*2*PI/SINY_LEN)
 
   // Sprite attributes: 8bpp, in front, 64x64, address SPRITE_PIXELS_VRAM
   SPRITE_ATTR: .word (SPRITE_PIXELS_VRAM/$20&$ffff)|VERA_SPRITE_8BPP, $140-$20, $f0-$20
@@ -1635,13 +1739,14 @@ Removing instruction jmp __b10
 Removing instruction jmp __b8
 Removing instruction jmp __b11
 Removing instruction jmp __b9
+Removing instruction jmp __b5
 Removing instruction jmp __b1
 Removing instruction jmp __b3
 Removing instruction jmp SEI1
 Removing instruction jmp __b4
 Removing instruction jmp CLI1
 Removing instruction jmp __breturn
-Removing instruction jmp __b5
+Removing instruction jmp __b6
 Removing instruction jmp __b1
 Removing instruction jmp __breturn
 Succesful ASM optimization Pass5NextJumpElimination
@@ -1656,6 +1761,7 @@ Removing instruction __b8_from___b10:
 Removing instruction __b8_from___b12:
 Removing instruction __b9_from___b11:
 Removing instruction __b9_from___b8:
+Removing instruction __b5_from_main:
 Removing instruction __b1_from_memcpy_to_vram:
 Removing instruction __b1_from___b2:
 Succesful ASM optimization Pass5RedundantLabelElimination
@@ -1673,15 +1779,17 @@ Removing instruction __b10:
 Removing instruction __b11:
 Removing instruction __b5_from___b9:
 Removing instruction memcpy_to_vram_from_main:
-Removing instruction __b1_from_main:
+Removing instruction __b5:
+Removing instruction memcpy_to_vram_from___b5:
+Removing instruction __b1_from___b5:
 Removing instruction __b3:
 Removing instruction SEI1:
 Removing instruction __b4:
 Removing instruction CLI1:
 Removing instruction __breturn:
 Removing instruction memcpy_to_vram_from___b2:
-Removing instruction __b5:
-Removing instruction __b1_from___b5:
+Removing instruction __b6:
+Removing instruction __b1_from___b6:
 Removing instruction __breturn:
 Succesful ASM optimization Pass5UnusedLabelElimination
 Removing unreachable instruction rts
@@ -1691,17 +1799,47 @@ FINAL SYMBOL TABLE
 const nomodify void()** KERNEL_IRQ = (void()**) 788
 const byte OFFSET_STRUCT_VERA_SPRITE_X = 2
 const byte OFFSET_STRUCT_VERA_SPRITE_Y = 4
-const word* SINX[$f1]  = kickasm {{ .fillword 256, 288+288*sin(i*2*PI/241)
+const word* SINX[SINX_LEN]  = kickasm {{ .fillword 256, 288+288*sin(i*2*PI/SINX_LEN)
  }}
-const word* SINY[$fb]  = kickasm {{ .fillword 256, 208+208*sin(i*2*PI/251)
+const nomodify byte SINX_LEN = $f1
+const word* SINY[SINY_LEN]  = kickasm {{ .fillword 256, 208+208*sin(i*2*PI/SINY_LEN)
  }}
+const nomodify byte SINY_LEN = $fb
 const byte SIZEOF_BYTE = 1
 const byte SIZEOF_STRUCT_VERA_SPRITE = 8
 struct VERA_SPRITE SPRITE_ATTR loadstore mem[8] = { ADDR: <SPRITE_PIXELS_VRAM/$20|VERA_SPRITE_8BPP, X: $140-$20, Y: (word)$f0-$20, CTRL1: $c, CTRL2: $f0 }
-const byte* SPRITE_PIXELS[$40*$40]  = kickasm {{ .var pic = LoadPicture("sprite.png", List().add($000000, $ffffff))
-	.for (var x=0;x<64; x++)
-    	.for (var y=0; y<64; y++)
-            .byte (pic.getPixel(x,y)==0) ? 0 : 1
+const byte* SPRITE_PIXELS[$40*$40]  = kickasm {{ .var pic = LoadPicture("tut.png")
+    // palette: rgb->idx
+    .var palette = Hashtable()
+    // RGB value for each palette index
+    .var palList = List()
+    // Next palette index
+    .var nxt_idx = 0;
+    .for (var y=0; y<64; y++) {
+    	.for (var x=0;x<64; x++) {
+            .var rgb = pic.getPixel(x,y);
+            .var idx = palette.get(rgb)
+            .if(idx==null) {
+                .eval idx = nxt_idx++;
+                .eval palette.put(rgb,idx);
+                .eval palList.add(rgb)
+            }
+            // Output pixel index
+            .byte idx
+        }
+    }
+    // Output sprite palette (offset 64*64 bytes=
+    .for(var i=0;i<256;i++) {
+        .var rgb = palList.get(i)
+        .var red = floor(rgb / [256*256])
+        .var green = floor(rgb/256) & 255
+        .var blue = rgb & 255
+        // bits 4-8: green, bits 0-3 blue
+        .byte (green/16)>>4 | blue/16
+        // bits bits 0-3 red
+        .byte red/16
+    }
+
  }}
 const nomodify dword SPRITE_PIXELS_VRAM = $8000
 const nomodify byte VERA_ADDRSEL = 1
@@ -1715,6 +1853,7 @@ const nomodify byte* VERA_DC_VIDEO = (byte*) 40745
 const nomodify byte* VERA_IEN = (byte*) 40742
 const nomodify byte VERA_INC_1 = $10
 const nomodify byte* VERA_ISR = (byte*) 40743
+const nomodify dword VERA_PALETTE = $1fa00
 const byte VERA_SPRITES_ENABLE = $40
 const nomodify word VERA_SPRITE_8BPP = $8000
 const nomodify dword VERA_SPRITE_ATTR = $1fc00
@@ -1758,19 +1897,19 @@ byte~ memcpy_to_vram::$2 reg byte a 2002.0
 byte* memcpy_to_vram::end
 byte* memcpy_to_vram::end#0 end zp[2]:16 16833.666666666664
 word memcpy_to_vram::num
-word memcpy_to_vram::num#3 num zp[2]:16 125.125
+word memcpy_to_vram::num#4 num zp[2]:16 125.125
 byte* memcpy_to_vram::s
 byte* memcpy_to_vram::s#1 s zp[2]:14 200002.0
 byte* memcpy_to_vram::s#2 s zp[2]:14 133668.3333333333
 byte* memcpy_to_vram::s#4 s zp[2]:14 2002.0
 void* memcpy_to_vram::src
-void* memcpy_to_vram::src#3 src zp[2]:14
+void* memcpy_to_vram::src#4 src zp[2]:14
 byte memcpy_to_vram::vbank
-byte memcpy_to_vram::vbank#3 reg byte x 166.83333333333334
+byte memcpy_to_vram::vbank#4 reg byte x 166.83333333333334
 void* memcpy_to_vram::vdest
-void* memcpy_to_vram::vdest#1 vdest zp[2]:12 202.0
-void* memcpy_to_vram::vdest#2 vdest zp[2]:12 22.0
-void* memcpy_to_vram::vdest#3 vdest zp[2]:12 528.5
+void* memcpy_to_vram::vdest#2 vdest zp[2]:12 202.0
+void* memcpy_to_vram::vdest#3 vdest zp[2]:12 22.0
+void* memcpy_to_vram::vdest#4 vdest zp[2]:12 528.5
 volatile word sin_idx_x loadstore zp[2]:18 1.9999999999999998
 volatile word sin_idx_y loadstore zp[2]:20 1.714285714285714
 
@@ -1780,10 +1919,10 @@ zp[2]:5 [ irq_vsync::i_y#3 irq_vsync::i_y#0 irq_vsync::i_y#9 irq_vsync::i_y#2 ir
 zp[2]:7 [ irq_vsync::vram_sprite_pos#2 irq_vsync::vram_sprite_pos#1 ]
 zp[1]:9 [ main::s#2 main::s#1 ]
 zp[2]:10 [ main::vram_sprite_attr#2 main::vram_sprite_attr#1 ]
-zp[2]:12 [ memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 memcpy_to_vram::vdest#1 ]
-reg byte x [ memcpy_to_vram::vbank#3 ]
-zp[2]:14 [ memcpy_to_vram::src#3 memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ]
-zp[2]:16 [ memcpy_to_vram::num#3 memcpy_to_vram::end#0 ]
+zp[2]:12 [ memcpy_to_vram::vdest#4 memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 ]
+reg byte x [ memcpy_to_vram::vbank#4 ]
+zp[2]:14 [ memcpy_to_vram::src#4 memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ]
+zp[2]:16 [ memcpy_to_vram::num#4 memcpy_to_vram::end#0 ]
 zp[2]:18 [ sin_idx_x ]
 zp[2]:20 [ sin_idx_y ]
 zp[2]:22 [ irq_vsync::$11 irq_vsync::$13 ]
@@ -1795,15 +1934,15 @@ mem[8] [ SPRITE_ATTR ]
 
 
 FINAL ASSEMBLER
-Score: 8490
+Score: 8528
 
   // File Comments
 // Example program for the Commander X16
-// Displays some sprites - exceeding the per-line limits of the CX16
+// Displays 32 64*64 TUT sprites
   // Upstart
 .cpu _65c02
   // Commodore 64 PRG executable file
-.file [name="sprite.prg", type="prg", segments="Program"]
+.file [name="sprites.prg", type="prg", segments="Program"]
 .segmentdef Program [segments="Basic, Code, Data"]
 .segmentdef Basic [start=$0801]
 .segmentdef Code [start=$80d]
@@ -1818,12 +1957,22 @@ Score: 8490
   .const VERA_DCSEL = 2
   .const VERA_ADDRSEL = 1
   .const VERA_VSYNC = 1
-  // Sprite Attributes address in VERA VRAM
+  // VERA Palette address in VRAM  $1FA00 - $1FBFF
+  // 256 entries of 2 bytes
+  // byte 0 bits 4-7: Green
+  // byte 0 bits 0-3: Blue
+  // byte 1 bits 0-3: Red
+  .const VERA_PALETTE = $1fa00
+  // Sprite Attributes address in VERA VRAM $1FC00 - $1FFFF
   .const VERA_SPRITE_ATTR = $1fc00
   // 8BPP sprite mode (add to VERA_SPRITE.ADDR to enable)
   .const VERA_SPRITE_8BPP = $8000
   // Address to use for sprite pixels in VRAM
   .const SPRITE_PIXELS_VRAM = $8000
+  // X sine [0;640-64]
+  .const SINX_LEN = $f1
+  // Y sine [0;480-64]
+  .const SINY_LEN = $fb
   .const SIZEOF_STRUCT_VERA_SPRITE = 8
   .const OFFSET_STRUCT_VERA_SPRITE_X = 2
   .const OFFSET_STRUCT_VERA_SPRITE_Y = 4
@@ -1913,18 +2062,18 @@ irq_vsync: {
     .label s = 2
     .label __13 = $16
     .label __14 = $18
-    // if(++sin_idx_x==241)
+    // if(++sin_idx_x==SINX_LEN)
     // [6] sin_idx_x = ++ sin_idx_x -- vwuz1=_inc_vwuz1 
     inc.z sin_idx_x
     bne !+
     inc.z sin_idx_x+1
   !:
-    // [7] if(sin_idx_x!=$f1) goto irq_vsync::@1 -- vwuz1_neq_vwuc1_then_la1 
+    // [7] if(sin_idx_x!=SINX_LEN) goto irq_vsync::@1 -- vwuz1_neq_vwuc1_then_la1 
     lda.z sin_idx_x+1
-    cmp #>$f1
+    cmp #>SINX_LEN
     bne __b1
     lda.z sin_idx_x
-    cmp #<$f1
+    cmp #<SINX_LEN
     bne __b1
     // irq_vsync::@3
     // sin_idx_x = 0
@@ -1949,11 +2098,11 @@ irq_vsync: {
     cmp #<$ffff
     bne __b2
     // irq_vsync::@4
-    // sin_idx_y = 251-1
-    // [11] sin_idx_y = $fb-1 -- vwuz1=vbuc1 
-    lda #<$fb-1
+    // sin_idx_y = SINY_LEN-1
+    // [11] sin_idx_y = SINY_LEN-1 -- vwuz1=vbuc1 
+    lda #<SINY_LEN-1
     sta.z sin_idx_y
-    lda #>$fb-1
+    lda #>SINY_LEN-1
     sta.z sin_idx_y+1
     // irq_vsync::@2
   __b2:
@@ -1983,16 +2132,13 @@ irq_vsync: {
     // irq_vsync::@5
   __b5:
     // for(char s=0;s<NUM_SPRITES;s++)
-    // [15] if(irq_vsync::s#2<$80) goto irq_vsync::@6 -- vbuz1_lt_vbuc1_then_la1 
+    // [15] if(irq_vsync::s#2<$20) goto irq_vsync::@6 -- vbuz1_lt_vbuc1_then_la1 
     lda.z s
-    cmp #$80
+    cmp #$20
     bcc __b6
     // irq_vsync::@7
     // *VERA_ISR = VERA_VSYNC
     // [16] *VERA_ISR = VERA_VSYNC -- _deref_pbuc1=vbuc2 
-    // Black border
-    //*VERA_CTRL &= ~VERA_DCSEL;
-    //*VERA_DC_BORDER = 0; 
     // Reset the VSYNC interrupt
     lda #VERA_VSYNC
     sta VERA_ISR
@@ -2052,27 +2198,27 @@ irq_vsync: {
     lda (__14),y
     sta SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y+1
     // memcpy_to_vram(vram_sprite_attr_bank, vram_sprite_pos, &SPRITE_ATTR+2, 4)
-    // [25] memcpy_to_vram::vdest#2 = (void*)irq_vsync::vram_sprite_pos#2 -- pvoz1=pvoz2 
+    // [25] memcpy_to_vram::vdest#3 = (void*)irq_vsync::vram_sprite_pos#2 -- pvoz1=pvoz2 
     lda.z vram_sprite_pos
     sta.z memcpy_to_vram.vdest
     lda.z vram_sprite_pos+1
     sta.z memcpy_to_vram.vdest+1
     // [26] call memcpy_to_vram 
   // Copy sprite positions to VRAM (the 4 relevant bytes in VERA_SPRITE_ATTR)
-    // [54] phi from irq_vsync::@6 to memcpy_to_vram [phi:irq_vsync::@6->memcpy_to_vram]
-    // [54] phi memcpy_to_vram::num#3 = 4 [phi:irq_vsync::@6->memcpy_to_vram#0] -- vwuz1=vbuc1 
+    // [56] phi from irq_vsync::@6 to memcpy_to_vram [phi:irq_vsync::@6->memcpy_to_vram]
+    // [56] phi memcpy_to_vram::num#4 = 4 [phi:irq_vsync::@6->memcpy_to_vram#0] -- vwuz1=vbuc1 
     lda #<4
     sta.z memcpy_to_vram.num
     lda #>4
     sta.z memcpy_to_vram.num+1
-    // [54] phi memcpy_to_vram::src#3 = (void*)&SPRITE_ATTR+2 [phi:irq_vsync::@6->memcpy_to_vram#1] -- pvoz1=pvoc1 
+    // [56] phi memcpy_to_vram::src#4 = (void*)&SPRITE_ATTR+2 [phi:irq_vsync::@6->memcpy_to_vram#1] -- pvoz1=pvoc1 
     lda #<SPRITE_ATTR+2
     sta.z memcpy_to_vram.src
     lda #>SPRITE_ATTR+2
     sta.z memcpy_to_vram.src+1
-    // [54] phi memcpy_to_vram::vbank#3 = irq_vsync::vram_sprite_attr_bank [phi:irq_vsync::@6->memcpy_to_vram#2] -- vbuxx=vbuc1 
+    // [56] phi memcpy_to_vram::vbank#4 = irq_vsync::vram_sprite_attr_bank [phi:irq_vsync::@6->memcpy_to_vram#2] -- vbuxx=vbuc1 
     ldx #vram_sprite_attr_bank
-    // [54] phi memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#2 [phi:irq_vsync::@6->memcpy_to_vram#3] -- register_copy 
+    // [56] phi memcpy_to_vram::vdest#4 = memcpy_to_vram::vdest#3 [phi:irq_vsync::@6->memcpy_to_vram#3] -- register_copy 
     jsr memcpy_to_vram
     // irq_vsync::@12
     // vram_sprite_pos += sizeof(SPRITE_ATTR)
@@ -2084,29 +2230,29 @@ irq_vsync: {
     bcc !+
     inc.z vram_sprite_pos+1
   !:
-    // i_x += 3
-    // [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 3 -- vwuz1=vwuz1_plus_vbuc1 
-    lda #3
+    // i_x += 9
+    // [28] irq_vsync::i_x#1 = irq_vsync::i_x#3 + 9 -- vwuz1=vwuz1_plus_vbuc1 
+    lda #9
     clc
     adc.z i_x
     sta.z i_x
     bcc !+
     inc.z i_x+1
   !:
-    // if(i_x>=241)
-    // [29] if(irq_vsync::i_x#1<$f1) goto irq_vsync::@8 -- vwuz1_lt_vbuc1_then_la1 
+    // if(i_x>=SINX_LEN)
+    // [29] if(irq_vsync::i_x#1<SINX_LEN) goto irq_vsync::@8 -- vwuz1_lt_vbuc1_then_la1 
     lda.z i_x+1
     bne !+
     lda.z i_x
-    cmp #$f1
+    cmp #SINX_LEN
     bcc __b8
   !:
     // irq_vsync::@10
-    // i_x -= 241
-    // [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - $f1 -- vwuz1=vwuz1_minus_vbuc1 
+    // i_x -= SINX_LEN
+    // [30] irq_vsync::i_x#2 = irq_vsync::i_x#1 - SINX_LEN -- vwuz1=vwuz1_minus_vbuc1 
     sec
     lda.z i_x
-    sbc #$f1
+    sbc #SINX_LEN
     sta.z i_x
     lda.z i_x+1
     sbc #0
@@ -2124,20 +2270,20 @@ irq_vsync: {
     bcc !+
     inc.z i_y+1
   !:
-    // if(i_y>=251)
-    // [33] if(irq_vsync::i_y#1<$fb) goto irq_vsync::@9 -- vwuz1_lt_vbuc1_then_la1 
+    // if(i_y>=SINY_LEN)
+    // [33] if(irq_vsync::i_y#1<SINY_LEN) goto irq_vsync::@9 -- vwuz1_lt_vbuc1_then_la1 
     lda.z i_y+1
     bne !+
     lda.z i_y
-    cmp #$fb
+    cmp #SINY_LEN
     bcc __b9
   !:
     // irq_vsync::@11
-    // i_y -= 251
-    // [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - $fb -- vwuz1=vwuz1_minus_vbuc1 
+    // i_y -= SINY_LEN
+    // [34] irq_vsync::i_y#2 = irq_vsync::i_y#1 - SINY_LEN -- vwuz1=vwuz1_minus_vbuc1 
     sec
     lda.z i_y
-    sbc #$fb
+    sbc #SINY_LEN
     sta.z i_y
     lda.z i_y+1
     sbc #0
@@ -2164,56 +2310,74 @@ main: {
     // memcpy_to_vram((char)>SPRITE_PIXELS_VRAM, <SPRITE_PIXELS_VRAM, SPRITE_PIXELS, sizeof(SPRITE_PIXELS))
     // [38] call memcpy_to_vram 
   // Copy sprite data to VRAM
-    // [54] phi from main to memcpy_to_vram [phi:main->memcpy_to_vram]
-    // [54] phi memcpy_to_vram::num#3 = (word)$40*$40*SIZEOF_BYTE [phi:main->memcpy_to_vram#0] -- vwuz1=vwuc1 
+    // [56] phi from main to memcpy_to_vram [phi:main->memcpy_to_vram]
+    // [56] phi memcpy_to_vram::num#4 = (word)$40*$40*SIZEOF_BYTE [phi:main->memcpy_to_vram#0] -- vwuz1=vwuc1 
     lda #<$40*$40*SIZEOF_BYTE
     sta.z memcpy_to_vram.num
     lda #>$40*$40*SIZEOF_BYTE
     sta.z memcpy_to_vram.num+1
-    // [54] phi memcpy_to_vram::src#3 = (void*)SPRITE_PIXELS [phi:main->memcpy_to_vram#1] -- pvoz1=pvoc1 
+    // [56] phi memcpy_to_vram::src#4 = (void*)SPRITE_PIXELS [phi:main->memcpy_to_vram#1] -- pvoz1=pvoc1 
     lda #<SPRITE_PIXELS
     sta.z memcpy_to_vram.src
     lda #>SPRITE_PIXELS
     sta.z memcpy_to_vram.src+1
-    // [54] phi memcpy_to_vram::vbank#3 = 0 [phi:main->memcpy_to_vram#2] -- vbuxx=vbuc1 
+    // [56] phi memcpy_to_vram::vbank#4 = 0 [phi:main->memcpy_to_vram#2] -- vbuxx=vbuc1 
     ldx #0
-    // [54] phi memcpy_to_vram::vdest#3 = (void*)<SPRITE_PIXELS_VRAM [phi:main->memcpy_to_vram#3] -- pvoz1=pvoc1 
+    // [56] phi memcpy_to_vram::vdest#4 = (void*)<SPRITE_PIXELS_VRAM [phi:main->memcpy_to_vram#3] -- pvoz1=pvoc1 
     lda #<SPRITE_PIXELS_VRAM&$ffff
     sta.z memcpy_to_vram.vdest
     lda #>SPRITE_PIXELS_VRAM&$ffff
     sta.z memcpy_to_vram.vdest+1
     jsr memcpy_to_vram
-    // [39] phi from main to main::@1 [phi:main->main::@1]
-    // [39] phi main::vram_sprite_attr#2 = (byte*)<VERA_SPRITE_ATTR [phi:main->main::@1#0] -- pbuz1=pbuc1 
+    // [39] phi from main to main::@5 [phi:main->main::@5]
+    // main::@5
+    // memcpy_to_vram((char)>VERA_PALETTE, <VERA_PALETTE, SPRITE_PIXELS+64*64, 0x200)
+    // [40] call memcpy_to_vram 
+  // Copy sprite palette to VRAM
+    // [56] phi from main::@5 to memcpy_to_vram [phi:main::@5->memcpy_to_vram]
+    // [56] phi memcpy_to_vram::num#4 = $200 [phi:main::@5->memcpy_to_vram#0] -- vwuz1=vwuc1 
+    lda #<$200
+    sta.z memcpy_to_vram.num
+    lda #>$200
+    sta.z memcpy_to_vram.num+1
+    // [56] phi memcpy_to_vram::src#4 = (void*)SPRITE_PIXELS+(word)$40*$40 [phi:main::@5->memcpy_to_vram#1] -- pvoz1=pvoc1 
+    lda #<SPRITE_PIXELS+$40*$40
+    sta.z memcpy_to_vram.src
+    lda #>SPRITE_PIXELS+$40*$40
+    sta.z memcpy_to_vram.src+1
+    // [56] phi memcpy_to_vram::vbank#4 = (byte)>VERA_PALETTE [phi:main::@5->memcpy_to_vram#2] -- vbuxx=vbuc1 
+    ldx #VERA_PALETTE>>$10
+    // [56] phi memcpy_to_vram::vdest#4 = (void*)<VERA_PALETTE [phi:main::@5->memcpy_to_vram#3] -- pvoz1=pvoc1 
+    lda #<VERA_PALETTE&$ffff
+    sta.z memcpy_to_vram.vdest
+    lda #>VERA_PALETTE&$ffff
+    sta.z memcpy_to_vram.vdest+1
+    jsr memcpy_to_vram
+    // [41] phi from main::@5 to main::@1 [phi:main::@5->main::@1]
+    // [41] phi main::vram_sprite_attr#2 = (byte*)<VERA_SPRITE_ATTR [phi:main::@5->main::@1#0] -- pbuz1=pbuc1 
     lda #<VERA_SPRITE_ATTR&$ffff
     sta.z vram_sprite_attr
     lda #>VERA_SPRITE_ATTR&$ffff
     sta.z vram_sprite_attr+1
-    // [39] phi main::s#2 = 0 [phi:main->main::@1#1] -- vbuz1=vbuc1 
+    // [41] phi main::s#2 = 0 [phi:main::@5->main::@1#1] -- vbuz1=vbuc1 
     lda #0
     sta.z s
     // main::@1
   __b1:
     // for(char s=0;s<NUM_SPRITES;s++)
-    // [40] if(main::s#2<$80) goto main::@2 -- vbuz1_lt_vbuc1_then_la1 
+    // [42] if(main::s#2<$20) goto main::@2 -- vbuz1_lt_vbuc1_then_la1 
     lda.z s
-    cmp #$80
+    cmp #$20
     bcc __b2
     // main::@3
     // *VERA_CTRL &= ~VERA_DCSEL
-    // [41] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL -- _deref_pbuc1=_deref_pbuc1_band_vbuc2 
-    // Make a border
-    //*VERA_CTRL |= VERA_DCSEL;
-    //*VERA_DC_HSTART = 16/4;
-    //*VERA_DC_HSTOP = 624/4;
-    //*VERA_DC_VSTART = 16/2;
-    //*VERA_DC_VSTOP = 464/2;    
+    // [43] *VERA_CTRL = *VERA_CTRL & ~VERA_DCSEL -- _deref_pbuc1=_deref_pbuc1_band_vbuc2 
     // Enable sprites
     lda #VERA_DCSEL^$ff
     and VERA_CTRL
     sta VERA_CTRL
     // *VERA_DC_VIDEO |= VERA_SPRITES_ENABLE
-    // [42] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2 
+    // [44] *VERA_DC_VIDEO = *VERA_DC_VIDEO | VERA_SPRITES_ENABLE -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2 
     lda #VERA_SPRITES_ENABLE
     ora VERA_DC_VIDEO
     sta VERA_DC_VIDEO
@@ -2223,13 +2387,13 @@ main: {
     sei
     // main::@4
     // *KERNEL_IRQ = &irq_vsync
-    // [44] *KERNEL_IRQ = &irq_vsync -- _deref_qprc1=pprc2 
+    // [46] *KERNEL_IRQ = &irq_vsync -- _deref_qprc1=pprc2 
     lda #<irq_vsync
     sta KERNEL_IRQ
     lda #>irq_vsync
     sta KERNEL_IRQ+1
     // *VERA_IEN = VERA_VSYNC
-    // [45] *VERA_IEN = VERA_VSYNC -- _deref_pbuc1=vbuc2 
+    // [47] *VERA_IEN = VERA_VSYNC -- _deref_pbuc1=vbuc2 
     lda #VERA_VSYNC
     sta VERA_IEN
     // main::CLI1
@@ -2238,12 +2402,12 @@ main: {
     cli
     // main::@return
     // }
-    // [47] return 
+    // [49] return 
     rts
     // main::@2
   __b2:
     // SPRITE_ATTR.X += 10
-    // [48] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a -- _deref_pwuc1=_deref_pwuc1_plus_vwuc2 
+    // [50] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X) + $a -- _deref_pwuc1=_deref_pwuc1_plus_vwuc2 
     lda #<$a
     clc
     adc SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X
@@ -2252,7 +2416,7 @@ main: {
     adc SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X+1
     sta SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_X+1
     // SPRITE_ATTR.Y += 10
-    // [49] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a -- _deref_pwuc1=_deref_pwuc1_plus_vwuc2 
+    // [51] *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) = *((word*)&SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y) + $a -- _deref_pwuc1=_deref_pwuc1_plus_vwuc2 
     lda #<$a
     clc
     adc SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y
@@ -2261,30 +2425,30 @@ main: {
     adc SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y+1
     sta SPRITE_ATTR+OFFSET_STRUCT_VERA_SPRITE_Y+1
     // memcpy_to_vram((char)>VERA_SPRITE_ATTR, vram_sprite_attr, &SPRITE_ATTR, sizeof(SPRITE_ATTR))
-    // [50] memcpy_to_vram::vdest#1 = (void*)main::vram_sprite_attr#2 -- pvoz1=pvoz2 
+    // [52] memcpy_to_vram::vdest#2 = (void*)main::vram_sprite_attr#2 -- pvoz1=pvoz2 
     lda.z vram_sprite_attr
     sta.z memcpy_to_vram.vdest
     lda.z vram_sprite_attr+1
     sta.z memcpy_to_vram.vdest+1
-    // [51] call memcpy_to_vram 
-    // [54] phi from main::@2 to memcpy_to_vram [phi:main::@2->memcpy_to_vram]
-    // [54] phi memcpy_to_vram::num#3 = SIZEOF_STRUCT_VERA_SPRITE [phi:main::@2->memcpy_to_vram#0] -- vwuz1=vbuc1 
+    // [53] call memcpy_to_vram 
+    // [56] phi from main::@2 to memcpy_to_vram [phi:main::@2->memcpy_to_vram]
+    // [56] phi memcpy_to_vram::num#4 = SIZEOF_STRUCT_VERA_SPRITE [phi:main::@2->memcpy_to_vram#0] -- vwuz1=vbuc1 
     lda #<SIZEOF_STRUCT_VERA_SPRITE
     sta.z memcpy_to_vram.num
     lda #>SIZEOF_STRUCT_VERA_SPRITE
     sta.z memcpy_to_vram.num+1
-    // [54] phi memcpy_to_vram::src#3 = (void*)&SPRITE_ATTR [phi:main::@2->memcpy_to_vram#1] -- pvoz1=pvoc1 
+    // [56] phi memcpy_to_vram::src#4 = (void*)&SPRITE_ATTR [phi:main::@2->memcpy_to_vram#1] -- pvoz1=pvoc1 
     lda #<SPRITE_ATTR
     sta.z memcpy_to_vram.src
     lda #>SPRITE_ATTR
     sta.z memcpy_to_vram.src+1
-    // [54] phi memcpy_to_vram::vbank#3 = (byte)>VERA_SPRITE_ATTR [phi:main::@2->memcpy_to_vram#2] -- vbuxx=vbuc1 
+    // [56] phi memcpy_to_vram::vbank#4 = (byte)>VERA_SPRITE_ATTR [phi:main::@2->memcpy_to_vram#2] -- vbuxx=vbuc1 
     ldx #VERA_SPRITE_ATTR>>$10
-    // [54] phi memcpy_to_vram::vdest#3 = memcpy_to_vram::vdest#1 [phi:main::@2->memcpy_to_vram#3] -- register_copy 
+    // [56] phi memcpy_to_vram::vdest#4 = memcpy_to_vram::vdest#2 [phi:main::@2->memcpy_to_vram#3] -- register_copy 
     jsr memcpy_to_vram
-    // main::@5
+    // main::@6
     // vram_sprite_attr += sizeof(SPRITE_ATTR)
-    // [52] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE -- pbuz1=pbuz1_plus_vbuc1 
+    // [54] main::vram_sprite_attr#1 = main::vram_sprite_attr#2 + SIZEOF_STRUCT_VERA_SPRITE -- pbuz1=pbuz1_plus_vbuc1 
     lda #SIZEOF_STRUCT_VERA_SPRITE
     clc
     adc.z vram_sprite_attr
@@ -2293,11 +2457,11 @@ main: {
     inc.z vram_sprite_attr+1
   !:
     // for(char s=0;s<NUM_SPRITES;s++)
-    // [53] main::s#1 = ++ main::s#2 -- vbuz1=_inc_vbuz1 
+    // [55] main::s#1 = ++ main::s#2 -- vbuz1=_inc_vbuz1 
     inc.z s
-    // [39] phi from main::@5 to main::@1 [phi:main::@5->main::@1]
-    // [39] phi main::vram_sprite_attr#2 = main::vram_sprite_attr#1 [phi:main::@5->main::@1#0] -- register_copy 
-    // [39] phi main::s#2 = main::s#1 [phi:main::@5->main::@1#1] -- register_copy 
+    // [41] phi from main::@6 to main::@1 [phi:main::@6->main::@1]
+    // [41] phi main::vram_sprite_attr#2 = main::vram_sprite_attr#1 [phi:main::@6->main::@1#0] -- register_copy 
+    // [41] phi main::s#2 = main::s#1 [phi:main::@6->main::@1#1] -- register_copy 
     jmp __b1
 }
   // memcpy_to_vram
@@ -2315,33 +2479,33 @@ memcpy_to_vram: {
     .label src = $e
     .label num = $10
     // *VERA_CTRL &= ~VERA_ADDRSEL
-    // [55] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL -- _deref_pbuc1=_deref_pbuc1_band_vbuc2 
+    // [57] *VERA_CTRL = *VERA_CTRL & ~VERA_ADDRSEL -- _deref_pbuc1=_deref_pbuc1_band_vbuc2 
     // Select DATA0
     lda #VERA_ADDRSEL^$ff
     and VERA_CTRL
     sta VERA_CTRL
     // <vdest
-    // [56] memcpy_to_vram::$0 = < memcpy_to_vram::vdest#3 -- vbuaa=_lo_pvoz1 
+    // [58] memcpy_to_vram::$0 = < memcpy_to_vram::vdest#4 -- vbuaa=_lo_pvoz1 
     lda.z vdest
     // *VERA_ADDRX_L = <vdest
-    // [57] *VERA_ADDRX_L = memcpy_to_vram::$0 -- _deref_pbuc1=vbuaa 
+    // [59] *VERA_ADDRX_L = memcpy_to_vram::$0 -- _deref_pbuc1=vbuaa 
     // Set address
     sta VERA_ADDRX_L
     // >vdest
-    // [58] memcpy_to_vram::$1 = > memcpy_to_vram::vdest#3 -- vbuaa=_hi_pvoz1 
+    // [60] memcpy_to_vram::$1 = > memcpy_to_vram::vdest#4 -- vbuaa=_hi_pvoz1 
     lda.z vdest+1
     // *VERA_ADDRX_M = >vdest
-    // [59] *VERA_ADDRX_M = memcpy_to_vram::$1 -- _deref_pbuc1=vbuaa 
+    // [61] *VERA_ADDRX_M = memcpy_to_vram::$1 -- _deref_pbuc1=vbuaa 
     sta VERA_ADDRX_M
     // VERA_INC_1 | vbank
-    // [60] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#3 -- vbuaa=vbuc1_bor_vbuxx 
+    // [62] memcpy_to_vram::$2 = VERA_INC_1 | memcpy_to_vram::vbank#4 -- vbuaa=vbuc1_bor_vbuxx 
     txa
     ora #VERA_INC_1
     // *VERA_ADDRX_H = VERA_INC_1 | vbank
-    // [61] *VERA_ADDRX_H = memcpy_to_vram::$2 -- _deref_pbuc1=vbuaa 
+    // [63] *VERA_ADDRX_H = memcpy_to_vram::$2 -- _deref_pbuc1=vbuaa 
     sta VERA_ADDRX_H
     // end = (char*)src+num
-    // [62] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#3 + memcpy_to_vram::num#3 -- pbuz1=pbuz2_plus_vwuz1 
+    // [64] memcpy_to_vram::end#0 = (byte*)memcpy_to_vram::src#4 + memcpy_to_vram::num#4 -- pbuz1=pbuz2_plus_vwuz1 
     lda.z end
     clc
     adc.z src
@@ -2349,13 +2513,13 @@ memcpy_to_vram: {
     lda.z end+1
     adc.z src+1
     sta.z end+1
-    // [63] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#3
-    // [64] phi from memcpy_to_vram memcpy_to_vram::@2 to memcpy_to_vram::@1 [phi:memcpy_to_vram/memcpy_to_vram::@2->memcpy_to_vram::@1]
-    // [64] phi memcpy_to_vram::s#2 = memcpy_to_vram::s#4 [phi:memcpy_to_vram/memcpy_to_vram::@2->memcpy_to_vram::@1#0] -- register_copy 
+    // [65] memcpy_to_vram::s#4 = (byte*)memcpy_to_vram::src#4
+    // [66] phi from memcpy_to_vram memcpy_to_vram::@2 to memcpy_to_vram::@1 [phi:memcpy_to_vram/memcpy_to_vram::@2->memcpy_to_vram::@1]
+    // [66] phi memcpy_to_vram::s#2 = memcpy_to_vram::s#4 [phi:memcpy_to_vram/memcpy_to_vram::@2->memcpy_to_vram::@1#0] -- register_copy 
     // memcpy_to_vram::@1
   __b1:
     // for(char *s = src; s!=end; s++)
-    // [65] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2 -- pbuz1_neq_pbuz2_then_la1 
+    // [67] if(memcpy_to_vram::s#2!=memcpy_to_vram::end#0) goto memcpy_to_vram::@2 -- pbuz1_neq_pbuz2_then_la1 
     lda.z s+1
     cmp.z end+1
     bne __b2
@@ -2364,17 +2528,17 @@ memcpy_to_vram: {
     bne __b2
     // memcpy_to_vram::@return
     // }
-    // [66] return 
+    // [68] return 
     rts
     // memcpy_to_vram::@2
   __b2:
     // *VERA_DATA0 = *s
-    // [67] *VERA_DATA0 = *memcpy_to_vram::s#2 -- _deref_pbuc1=_deref_pbuz1 
+    // [69] *VERA_DATA0 = *memcpy_to_vram::s#2 -- _deref_pbuc1=_deref_pbuz1 
     ldy #0
     lda (s),y
     sta VERA_DATA0
     // for(char *s = src; s!=end; s++)
-    // [68] memcpy_to_vram::s#1 = ++ memcpy_to_vram::s#2 -- pbuz1=_inc_pbuz1 
+    // [70] memcpy_to_vram::s#1 = ++ memcpy_to_vram::s#2 -- pbuz1=_inc_pbuz1 
     inc.z s
     bne !+
     inc.z s+1
@@ -2383,23 +2547,49 @@ memcpy_to_vram: {
 }
   // File Data
 .segment Data
-  // A 64*64 8bpp sprite 
-  .align $100
+  // A 64*64 8bpp TUT sprite 
+  .align $1200
 SPRITE_PIXELS:
-.var pic = LoadPicture("sprite.png", List().add($000000, $ffffff))
-	.for (var x=0;x<64; x++)
-    	.for (var y=0; y<64; y++)
-            .byte (pic.getPixel(x,y)==0) ? 0 : 1
+.var pic = LoadPicture("tut.png")
+    // palette: rgb->idx
+    .var palette = Hashtable()
+    // RGB value for each palette index
+    .var palList = List()
+    // Next palette index
+    .var nxt_idx = 0;
+    .for (var y=0; y<64; y++) {
+    	.for (var x=0;x<64; x++) {
+            .var rgb = pic.getPixel(x,y);
+            .var idx = palette.get(rgb)
+            .if(idx==null) {
+                .eval idx = nxt_idx++;
+                .eval palette.put(rgb,idx);
+                .eval palList.add(rgb)
+            }
+            // Output pixel index
+            .byte idx
+        }
+    }
+    // Output sprite palette (offset 64*64 bytes=
+    .for(var i=0;i<256;i++) {
+        .var rgb = palList.get(i)
+        .var red = floor(rgb / [256*256])
+        .var green = floor(rgb/256) & 255
+        .var blue = rgb & 255
+        // bits 4-8: green, bits 0-3 blue
+        .byte (green/16)>>4 | blue/16
+        // bits bits 0-3 red
+        .byte red/16
+    }
+
 
-  // X sine [0;640-64]
   .align $100
 SINX:
-.fillword 256, 288+288*sin(i*2*PI/241)
+.fillword 256, 288+288*sin(i*2*PI/SINX_LEN)
 
-  // Y sine [0;480-64]
   .align $100
 SINY:
-.fillword 256, 208+208*sin(i*2*PI/251)
+.fillword 256, 208+208*sin(i*2*PI/SINY_LEN)
 
   // Sprite attributes: 8bpp, in front, 64x64, address SPRITE_PIXELS_VRAM
   SPRITE_ATTR: .word (SPRITE_PIXELS_VRAM/$20&$ffff)|VERA_SPRITE_8BPP, $140-$20, $f0-$20
diff --git a/src/test/ref/examples/cx16/sprite.sym b/src/test/ref/examples/cx16/sprites.sym
similarity index 68%
rename from src/test/ref/examples/cx16/sprite.sym
rename to src/test/ref/examples/cx16/sprites.sym
index 0618c6b29..63f591205 100644
--- a/src/test/ref/examples/cx16/sprite.sym
+++ b/src/test/ref/examples/cx16/sprites.sym
@@ -1,17 +1,47 @@
 const nomodify void()** KERNEL_IRQ = (void()**) 788
 const byte OFFSET_STRUCT_VERA_SPRITE_X = 2
 const byte OFFSET_STRUCT_VERA_SPRITE_Y = 4
-const word* SINX[$f1]  = kickasm {{ .fillword 256, 288+288*sin(i*2*PI/241)
+const word* SINX[SINX_LEN]  = kickasm {{ .fillword 256, 288+288*sin(i*2*PI/SINX_LEN)
  }}
-const word* SINY[$fb]  = kickasm {{ .fillword 256, 208+208*sin(i*2*PI/251)
+const nomodify byte SINX_LEN = $f1
+const word* SINY[SINY_LEN]  = kickasm {{ .fillword 256, 208+208*sin(i*2*PI/SINY_LEN)
  }}
+const nomodify byte SINY_LEN = $fb
 const byte SIZEOF_BYTE = 1
 const byte SIZEOF_STRUCT_VERA_SPRITE = 8
 struct VERA_SPRITE SPRITE_ATTR loadstore mem[8] = { ADDR: <SPRITE_PIXELS_VRAM/$20|VERA_SPRITE_8BPP, X: $140-$20, Y: (word)$f0-$20, CTRL1: $c, CTRL2: $f0 }
-const byte* SPRITE_PIXELS[$40*$40]  = kickasm {{ .var pic = LoadPicture("sprite.png", List().add($000000, $ffffff))
-	.for (var x=0;x<64; x++)
-    	.for (var y=0; y<64; y++)
-            .byte (pic.getPixel(x,y)==0) ? 0 : 1
+const byte* SPRITE_PIXELS[$40*$40]  = kickasm {{ .var pic = LoadPicture("tut.png")
+    // palette: rgb->idx
+    .var palette = Hashtable()
+    // RGB value for each palette index
+    .var palList = List()
+    // Next palette index
+    .var nxt_idx = 0;
+    .for (var y=0; y<64; y++) {
+    	.for (var x=0;x<64; x++) {
+            .var rgb = pic.getPixel(x,y);
+            .var idx = palette.get(rgb)
+            .if(idx==null) {
+                .eval idx = nxt_idx++;
+                .eval palette.put(rgb,idx);
+                .eval palList.add(rgb)
+            }
+            // Output pixel index
+            .byte idx
+        }
+    }
+    // Output sprite palette (offset 64*64 bytes=
+    .for(var i=0;i<256;i++) {
+        .var rgb = palList.get(i)
+        .var red = floor(rgb / [256*256])
+        .var green = floor(rgb/256) & 255
+        .var blue = rgb & 255
+        // bits 4-8: green, bits 0-3 blue
+        .byte (green/16)>>4 | blue/16
+        // bits bits 0-3 red
+        .byte red/16
+    }
+
  }}
 const nomodify dword SPRITE_PIXELS_VRAM = $8000
 const nomodify byte VERA_ADDRSEL = 1
@@ -25,6 +55,7 @@ const nomodify byte* VERA_DC_VIDEO = (byte*) 40745
 const nomodify byte* VERA_IEN = (byte*) 40742
 const nomodify byte VERA_INC_1 = $10
 const nomodify byte* VERA_ISR = (byte*) 40743
+const nomodify dword VERA_PALETTE = $1fa00
 const byte VERA_SPRITES_ENABLE = $40
 const nomodify word VERA_SPRITE_8BPP = $8000
 const nomodify dword VERA_SPRITE_ATTR = $1fc00
@@ -68,19 +99,19 @@ byte~ memcpy_to_vram::$2 reg byte a 2002.0
 byte* memcpy_to_vram::end
 byte* memcpy_to_vram::end#0 end zp[2]:16 16833.666666666664
 word memcpy_to_vram::num
-word memcpy_to_vram::num#3 num zp[2]:16 125.125
+word memcpy_to_vram::num#4 num zp[2]:16 125.125
 byte* memcpy_to_vram::s
 byte* memcpy_to_vram::s#1 s zp[2]:14 200002.0
 byte* memcpy_to_vram::s#2 s zp[2]:14 133668.3333333333
 byte* memcpy_to_vram::s#4 s zp[2]:14 2002.0
 void* memcpy_to_vram::src
-void* memcpy_to_vram::src#3 src zp[2]:14
+void* memcpy_to_vram::src#4 src zp[2]:14
 byte memcpy_to_vram::vbank
-byte memcpy_to_vram::vbank#3 reg byte x 166.83333333333334
+byte memcpy_to_vram::vbank#4 reg byte x 166.83333333333334
 void* memcpy_to_vram::vdest
-void* memcpy_to_vram::vdest#1 vdest zp[2]:12 202.0
-void* memcpy_to_vram::vdest#2 vdest zp[2]:12 22.0
-void* memcpy_to_vram::vdest#3 vdest zp[2]:12 528.5
+void* memcpy_to_vram::vdest#2 vdest zp[2]:12 202.0
+void* memcpy_to_vram::vdest#3 vdest zp[2]:12 22.0
+void* memcpy_to_vram::vdest#4 vdest zp[2]:12 528.5
 volatile word sin_idx_x loadstore zp[2]:18 1.9999999999999998
 volatile word sin_idx_y loadstore zp[2]:20 1.714285714285714
 
@@ -90,10 +121,10 @@ zp[2]:5 [ irq_vsync::i_y#3 irq_vsync::i_y#0 irq_vsync::i_y#9 irq_vsync::i_y#2 ir
 zp[2]:7 [ irq_vsync::vram_sprite_pos#2 irq_vsync::vram_sprite_pos#1 ]
 zp[1]:9 [ main::s#2 main::s#1 ]
 zp[2]:10 [ main::vram_sprite_attr#2 main::vram_sprite_attr#1 ]
-zp[2]:12 [ memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 memcpy_to_vram::vdest#1 ]
-reg byte x [ memcpy_to_vram::vbank#3 ]
-zp[2]:14 [ memcpy_to_vram::src#3 memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ]
-zp[2]:16 [ memcpy_to_vram::num#3 memcpy_to_vram::end#0 ]
+zp[2]:12 [ memcpy_to_vram::vdest#4 memcpy_to_vram::vdest#3 memcpy_to_vram::vdest#2 ]
+reg byte x [ memcpy_to_vram::vbank#4 ]
+zp[2]:14 [ memcpy_to_vram::src#4 memcpy_to_vram::s#2 memcpy_to_vram::s#4 memcpy_to_vram::s#1 ]
+zp[2]:16 [ memcpy_to_vram::num#4 memcpy_to_vram::end#0 ]
 zp[2]:18 [ sin_idx_x ]
 zp[2]:20 [ sin_idx_y ]
 zp[2]:22 [ irq_vsync::$11 irq_vsync::$13 ]