with uneven comments

data/print-three-lower.asm

@@ -1,11 +1,11 @@
   ; Screen(0) = White
-  lda #$01
-  sta $200
+  lda #$01 ; a = White
+  sta $200 ; Screen(0) = a
 
   ; Screen(1) = Green
-  lda #$05
-  sta $201
+  lda #$05 ; a = Green
+  sta $201 ; Screen(1) = a
 
   ; Screen(2) = Orange
-  lda #$08
-  sta $202
+  lda #$08 ; a = Orange
+  sta $202 ; Screen(2) = a

data/print-three-upper-math.asm

@@ -20,13 +20,13 @@ define SCREEN $200
 
 
   ; Screen(0) = White
-  LDA #COLOR_White
-  STA SCREEN+0
+  LDA #COLOR_White ; a = White
+  STA SCREEN+0     ; Screen(0) = a
 
   ; Screen(1) = Green
-  LDA #COLOR_Green
-  STA SCREEN+1
+  LDA #COLOR_Green ; a = Green
+  STA SCREEN+1     ; Screen(1) = a
 
   ; Screen(2) = Orange
-  LDA #COLOR_Orange
-  STA SCREEN+2
+  LDA #COLOR_Orange ; a = Orange
+  STA SCREEN+2      ; Screen(2) = a

data/print-three-upper.asm

@@ -20,13 +20,13 @@ define SCREEN $200
 
 
   ; Screen(0) = White
-  LDA #COLOR_White
-  STA SCREEN
+  LDA #COLOR_White ; a = White
+  STA SCREEN       ; Screen(0) = a
 
   ; Screen(1) = Green
-  LDA #COLOR_Green
-  STA TODO
+  LDA #COLOR_Green ; a = Green
+  STA TODO         ; Screen(1) = a
 
   ; Screen(2) = Orange
-  LDA #COLOR_Orange
-  STA TODO
+  LDA #COLOR_Orange ; a = Orange
+  STA TODO          ; Screen(2) = a

firepower-core/src/main/scala/com/htmlism/firepower/core/AsmBlock.scala

@@ -74,7 +74,26 @@ object AsmBlock:
     case class Instruction(code: String, comment: Option[String])
 
     def toLines(x: Intent): List[String] =
-      x.label.map(toComment).map(withIndent).toList ++ x
-        .instructions
-        .map(i => i.code + i.comment.map(toComment).map(" " + _).getOrElse(""))
-        .map(withIndent)
+      val comment =
+        x.label.map(toComment).map(withIndent).toList
+
+      val maximumLength =
+        x
+          .instructions
+          .map(_.code.length)
+          .max
+
+      val instructions =
+        x
+          .instructions
+          .map { i =>
+            i.comment match
+              case Some(c) =>
+                String.format(s"%-${maximumLength}s", i.code) + " " + toComment(c)
+
+              case None =>
+                i.code
+          }
+          .map(withIndent)
+
+      comment ++ instructions

firepower-demo/src/main/scala/com/htmlism/firepower/demo/PrintThree.scala

@@ -75,10 +75,15 @@ object PrintThree:
         AsmBlock.Intent(
           s"${mv.dest.toComment} = ${mv.src.toComment}".some,
           List(
-            AsmBlock.Intent.Instruction(instruction("LDA", opts.instructionCase) + " " + argument, None),
             AsmBlock
               .Intent
-              .Instruction(instruction("STA", opts.instructionCase) + " " + argumentTwo, None)
+              .Instruction(instruction("LDA", opts.instructionCase) + " " + argument, s"a = ${mv.src.toComment}".some),
+            AsmBlock
+              .Intent
+              .Instruction(
+                instruction("STA", opts.instructionCase) + " " + argumentTwo,
+                s"${mv.dest.toComment} = a".some
+              )
           )
         )
       }