Minor tweaks

Note that address region isolation doesn't prevent explicit label
references from working (add update the test to prove it).

Added a note about pre-label xrefs.

SourceGen/DisasmProject.cs

@@ -1550,7 +1550,7 @@ namespace SourceGen {
             //
             // We want to tag both.  So if "LDA $1000" becomes "LDA label-2", we want to
             // add a numeric reference to the code at $1000, and a symbolic reference to the
-            // labe at $1002, that point back to the LDA instruction.  These are presented
+            // label at $1002, that point back to the LDA instruction.  These are presented
             // slightly differently to the user.  For a symbolic reference with no adjustment,
             // we don't add the (redundant) numeric reference.
             //
@@ -1648,6 +1648,12 @@ namespace SourceGen {
                                     mAnattribs[operandOffset].Address;
                             }
 
+                            // TODO: to handle pre-labels correctly, we need to associate an
+                            // XrefSet with an address region, and add the reference there.  We
+                            // currently attach it to the offset of the first byte in the region,
+                            // which means you don't see anything in the references window when
+                            // the pre-label line is selected.
+
                             AddXref(symOffset, new XrefSet.Xref(offset, true, xrefType, accType,
                                 accessFlags, adj));
                             if (adj == 0) {

SourceGen/MainController.cs

@@ -3947,7 +3947,8 @@ namespace SourceGen {
                 return;
             }
             int lineIndex = mMainWin.CodeListView_GetFirstSelectedIndex();
-            LineListGen.Line.Type type = CodeLineList[lineIndex].LineType;
+            LineListGen.Line line = CodeLineList[lineIndex];
+            LineListGen.Line.Type type = line.LineType;
             if (type != LineListGen.Line.Type.Code &&
                     type != LineListGen.Line.Type.Data &&
                     type != LineListGen.Line.Type.EquDirective &&
@@ -3960,10 +3961,10 @@ namespace SourceGen {
 
             // Find the appropriate xref set.
             if (type == LineListGen.Line.Type.LocalVariableTable) {
-                DefSymbol defSym = CodeLineList.GetLocalVariableFromLine(CodeLineList[lineIndex]);
+                DefSymbol defSym = CodeLineList.GetLocalVariableFromLine(line);
                 xrefs = (defSym == null) ? null : defSym.Xrefs;
             } else {
-                int offset = CodeLineList[lineIndex].FileOffset;
+                int offset = line.FileOffset;
                 if (offset < 0) {
                     // EQU in header
                     int index = LineListGen.DefSymIndexFromOffset(offset);

SourceGen/SGTestData/20290-region-isolation.dis65

@@ -232,7 +232,7 @@
 },
 
 "Comments":{
-},
+"9":"operand label set manually"},
 
 "LongComments":{
 },
@@ -396,7 +396,13 @@
 "LabelAnno":"None"}},
 
 "OperandFormats":{
-},
+"9":{
+"Length":3,
+"Format":"NumericLE",
+"SubFormat":"Symbol",
+"SymbolRef":{
+"Label":"region4",
+"Part":"Low"}}},
 
 "LvTables":{
 },

SourceGen/SGTestData/Expected/20290-region-isolation_64tass.S

@@ -9,7 +9,7 @@ IN_4    =       $c000
         jsr     region1
         jsr     region2
         jsr     THREE_K
-        jsr     $4000
+        jsr     region4    ;operand label set manually
         lda     L9005
         lda     LA008
         lda     IN_3+11

SourceGen/SGTestData/Expected/20290-region-isolation_acme.S

@@ -9,7 +9,7 @@ IN_4    =       $c000
         jsr     region1
         jsr     region2
         jsr     THREE_K
-        jsr     $4000
+        jsr     region4    ;operand label set manually
         lda     L9005
         lda     LA008
         lda     IN_3+11

SourceGen/SGTestData/Expected/20290-region-isolation_cc65.S

@@ -9,7 +9,7 @@ IN_4     =       $c000
          jsr     region1
          jsr     region2
          jsr     THREE_K
-         jsr     $4000
+         jsr     region4    ;operand label set manually
          lda     L9005
          lda     LA008
          lda     IN_3+11

SourceGen/SGTestData/Expected/20290-region-isolation_merlin32.S

@@ -8,7 +8,7 @@ IN_4     equ   $c000
          jsr   region1
          jsr   region2
          jsr   THREE_K
-         jsr   $4000
+         jsr   region4    ;operand label set manually
          lda   L9005
          lda   LA008
          lda   IN_3+11

SourceGen/XrefSet.cs

@@ -106,7 +106,7 @@ namespace SourceGen {
 
             public override string ToString() {
                 return "Xref off=+" + Offset.ToString("x6") + " sym=" + IsByName +
-                    " type=" + Type + " accType= " + AccType + " flags=" + Flags +
+                    " type=" + Type + " accType=" + AccType + " flags=" + Flags +
                     " adj=" + Adjustment;
             }
         }

docs/sgmanual/intro-details.html

@@ -684,6 +684,10 @@ jump to locations in our bank #1 code.  It's useful to leave inbound
 resolution enabled so that we can reference the table from the code
 that copies it to RAM.</p>
 
+<p>Note this only affects automatic operand resolution.  You can set
+operand symbols manually to any location, regardless of the isolation
+flags.</p>
+
 
 <h3 id="non-addr">Non-Addressable Areas</h3>