Added Atari XL/XE platform target generating a simple XEX-file. Closes #499

2024-12-24 04:31:02 +00:00 · 2020-08-06 10:57:27 +02:00 · 2020-08-06 10:57:27 +02:00 · 392ab7e442
commit 392ab7e442
parent a7359f8395
9 changed files with 532 additions and 6 deletions
--- a/src/main/java/dk/camelot64/kickc/fragment/AsmFragmentTemplateSynthesisRule.java
+++ b/src/main/java/dk/camelot64/kickc/fragment/AsmFragmentTemplateSynthesisRule.java
@ -766,12 +766,6 @@ class AsmFragmentTemplateSynthesisRule {
         // Rewrite (Z1),x to save Y to $FF and reload it into YY
         synths.add(new AsmFragmentTemplateSynthesisRule("pb(.)z1_derefidx_vbuxx=(.*)", twoZM1, "stx $ff" , "vb$1aa=$2", "ldz $ff\nsta ({z1}),z", mapZM1));

-      // TODO: Rewrite (Z1),y assignment to use A
-      //synths.add(new AsmFragmentTemplateSynthesisRule("pb(.)z1_derefidx_vbuyy=(.*)", twoZM1+"|"+rvalYy, null , "vb$1aa=$2", "sta ({z1}),y", null, "yy"));
-      //if(targetCpu.getCpu65xx().hasRegisterZ())
-         // Rewrite (Z1),z assignment to use A
-      //   synths.add(new AsmFragmentTemplateSynthesisRule("pb(.)z1_derefidx_vbuzz=(.*)", twoZM1+"|"+rvalZz, null , "vb$1aa=$2", "sta ({z1}),z", null, "zz"));
-
      // Rewrite (Z1),a to use TAY prefix
      synths.add(new AsmFragmentTemplateSynthesisRule("pb(.)z1_derefidx_vbuaa=(.*)", twoZM1+"|"+rvalYy, "tay" , "vb$1aa=$2", "sta ({z1}),y", mapZM1, "yy"));
      if(targetCpu.getCpu65xx().hasRegisterZ())
--- a/src/main/kc/target/atarixl.ld
+++ b/src/main/kc/target/atarixl.ld
@ -0,0 +1,22 @@
+// Atari XL/XE XEX file minimal file
+// https://www.atarimax.com/jindroush.atari.org/afmtexe.html
+.file [name="%O", type="bin", segments="XexFile"]
+.segmentdef Program [segments="ProgramStart, Code, Data, ProgramEnd"]
+.segmentdef ProgramStart [start=$2000]
+.segmentdef Code [startAfter="ProgramStart"]
+.segmentdef Data [startAfter="Code"]
+.segmentdef ProgramEnd [startAfter="Data"]
+.segment ProgramStart
+ProgramStart:
+.segment ProgramEnd
+ProgramEnd:
+.segmentdef XexFile
+.segment XexFile
+// Binary File Header
+.byte $ff, $ff
+// Program segment [start address, end address, data]
+.word ProgramStart, ProgramEnd
+.segmentout [ segments="Program" ]
+// RunAd - Run Address Segment [start address, end address, data]
+.word $02e0, $02e1
+.word %E 
--- a/src/main/kc/target/atarixl.tgt
+++ b/src/main/kc/target/atarixl.tgt
@ -0,0 +1,9 @@
+{
+    "extension": "xex",
+    "link": "atarixl.ld",
+    "cpu": "MOS6502X",
+    "emulator": "65XEDebugger",
+    "defines": {
+        "__ATARIXL__": 1
+    }
+}
--- a/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
+++ b/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
@ -192,6 +192,11 @@ public class TestPrograms {
      compileAndCompare("examples/nes-demo/nes-demo.c");
   }

+   @Test
+   public void testAtariXlHello() throws IOException, URISyntaxException {
+      compileAndCompare("examples/atarixl/helloxl.c");
+   }
+
   @Test
   public void testAtari2600Sprites() throws IOException, URISyntaxException {
      compileAndCompare("examples/atari2600/atari2600-sprites.c");
--- a/src/test/kc/examples/atarixl/helloxl.c
+++ b/src/test/kc/examples/atarixl/helloxl.c
@ -0,0 +1,64 @@
+// Hello World for Atari XL / XE
+// XEX file format https://www.atarimax.com/jindroush.atari.org/afmtexe.html
+// Minimal Hello World https://atariage.com/forums/topic/229742-help-with-hello-world-in-mads/
+// Display Lists atariarchives.org/mapping/appendix8.php
+
+#pragma target(atarixl)
+
+// Direct Memory Access Control
+// 7 6 5 4 3 2 1 0
+// - - - - - - 0 0 No playfield
+// - - - - - - 0 1 Narrow playfield (128 color clocks	32 characters)
+// - - - - - - 1 0 Standard playfield (160 color clocks	40 characters) (default)
+// - - - - - - 1 1 Wide playfield (192 color clocks	48 characters)
+// - - - - - 1 - - Enable missle DMA
+// - - - - 1 - - - Enable player DMA
+// - - - 1 - - - - One line player resolution
+// - - - 0 - - - - Two-line player resolution (default)
+// - - 1 - - - - - Enable DMA for fetching the display list instructions (default)
+// SHADOW: SDMCTL $022F
+char * const ANTIC_DMACTL = 0xd400;
+
+// OS Shadow ANTIC Direct Memory Access Control
+char * const SDMCTL = 0x022f;
+
+// Character Control
+// 7 6 5 4 3 2 1 0
+// - - - - - - - 1 Video Blank. Inverse video characters display as blanks spaces.
+// - - - - - - 1 - Video Inverse. Inverse video characters appear as inverse video. (default)
+// - - - - - 1 - - Video Reflect. All characters are displayed vertically mirrored.
+// SHADOW: CHART $02F3
+char * const ANTIC_CHACTL = 0xd401;
+
+// OS Shadow ANTIC Character Control
+char * const CHART = 0x02f3;
+
+// Display List Pointer
+// ANTIC begins executing the Display List pointed to by the 16-bit address in registers DLISTL/DLISTH
+// SHADOW: SDLSTL/SDLSTH $0230/$0231
+char ** const ANTIC_DLIST = 0xd402;
+
+// OS Shadow ANTIC Display List Pointer
+char ** const SDLST = 0x0230;
+
+void main() {
+    // Enable DMA, Narrow Playfield into Shadow ANTIC Direct Memory Access Control
+    *SDMCTL = 0x21; 
+    // Set Shadow ANTIC Display List Pointer
+    *SDLST = DISPLAY_LIST;
+    // Loop forever
+    while (1) ;
+}
+
+// Message to show
+// Encoding: atari_internal
+char TEXT[] = {'h'|0x20,'e'|0x20,'l'|0x20,'l'|0x20,'o'|0x20,0x0,'x'|0x60,'t'|0x60,0x0,'w'|0x20,'o'|0x20,'r'|0x20,'l'|0x20,'d'|0x20,0x41,0x0,0x0,0x0,0x0};
+
+// ANTIC Display List Program
+// https://en.wikipedia.org/wiki/ANTIC
+char DISPLAY_LIST[] = {
+   0x70, 0x70, 0x70,                    // 3* BLK 8             (0x70) 8 blank lines 
+   0x47, <TEXT, >TEXT,                  //    LMS 7, TEXT       (0x47)  Load memory address and set to charmode 7 (16/20/24 chars wide, 16 lines per char)
+   0x41, <DISPLAY_LIST, >DISPLAY_LIST   //    JVB DISPLAY_LIST  (0x41) jump and wait for VBLANK
+};
+
--- a/src/test/ref/examples/atarixl/helloxl.asm
+++ b/src/test/ref/examples/atarixl/helloxl.asm
@ -0,0 +1,53 @@
+// Hello World for Atari XL / XE
+// XEX file format https://www.atarimax.com/jindroush.atari.org/afmtexe.html
+// Minimal Hello World https://atariage.com/forums/topic/229742-help-with-hello-world-in-mads/
+// Display Lists atariarchives.org/mapping/appendix8.php
+  // Atari XL/XE minimal XEX file
+// https://www.atarimax.com/jindroush.atari.org/afmtexe.html
+.file [name="helloxl.xex", type="bin", segments="XexFile"]
+.segmentdef Program [segments="ProgramStart, Code, Data, ProgramEnd"]
+.segmentdef ProgramStart [start=$2000]
+.segmentdef Code [startAfter="ProgramStart"]
+.segmentdef Data [startAfter="Code"]
+.segmentdef ProgramEnd [startAfter="Data"]
+.segment ProgramStart
+ProgramStart:
+.segment ProgramEnd
+ProgramEnd:
+.segmentdef XexFile
+.segment XexFile
+// Binary File Header
+.byte $ff, $ff
+// Program segment [start address, end address, data]
+.word ProgramStart, ProgramEnd
+.segmentout [ segments="Program" ]
+// RunAd - Run Address Segment [start address, end address, data]
+.word $02e0, $02e1
+.word main 
+  // OS Shadow ANTIC Direct Memory Access Control
+  .label SDMCTL = $22f
+  // OS Shadow ANTIC Display List Pointer
+  .label SDLST = $230
+.segment Code
+main: {
+    // *SDMCTL = 0x21
+    // Enable DMA, Narrow Playfield into Shadow ANTIC Direct Memory Access Control
+    lda #$21
+    sta SDMCTL
+    // *SDLST = DISPLAY_LIST
+    // Set Shadow ANTIC Display List Pointer
+    lda #<DISPLAY_LIST
+    sta SDLST
+    lda #>DISPLAY_LIST
+    sta SDLST+1
+  __b1:
+  // Loop forever
+    jmp __b1
+}
+.segment Data
+  // Message to show
+  // Encoding: atari_internal
+  TEXT: .byte 'h'|$20, 'e'|$20, 'l'|$20, 'l'|$20, 'o'|$20, 0, 'x'|$60, 't'|$60, 0, 'w'|$20, 'o'|$20, 'r'|$20, 'l'|$20, 'd'|$20, $41, 0, 0, 0, 0
+  // ANTIC Display List Program
+  // https://en.wikipedia.org/wiki/ANTIC
+  DISPLAY_LIST: .byte $70, $70, $70, $47, <TEXT, >TEXT, $41, <DISPLAY_LIST, >DISPLAY_LIST
--- a/src/test/ref/examples/atarixl/helloxl.cfg
+++ b/src/test/ref/examples/atarixl/helloxl.cfg
@ -0,0 +1,9 @@
+
+(void()) main()
+main: scope:[main]  from
+  [0] *((const nomodify byte*) SDMCTL) ← (byte) $21
+  [1] *((const nomodify byte**) SDLST) ← (const byte*) DISPLAY_LIST
+  to:main::@1
+main::@1: scope:[main]  from main main::@1
+  [2] phi()
+  to:main::@1
--- a/src/test/ref/examples/atarixl/helloxl.log
+++ b/src/test/ref/examples/atarixl/helloxl.log
@ -0,0 +1,363 @@
+Resolved forward reference DISPLAY_LIST to (const byte*) DISPLAY_LIST
+
+CONTROL FLOW GRAPH SSA
+
+(void()) main()
+main: scope:[main]  from __start
+  *((const nomodify byte*) SDMCTL) ← (number) $21
+  *((const nomodify byte**) SDLST) ← (const byte*) DISPLAY_LIST
+  to:main::@1
+main::@1: scope:[main]  from main main::@1
+  (bool~) main::$0 ← (number) 0 != (number) 1
+  if((bool~) main::$0) goto main::@1
+  to:main::@return
+main::@return: scope:[main]  from main::@1
+  return 
+  to:@return
+
+(void()) __start()
+__start: scope:[__start]  from
+  call main 
+  to:__start::@1
+__start::@1: scope:[__start]  from __start
+  to:__start::@return
+__start::@return: scope:[__start]  from __start::@1
+  return 
+  to:@return
+
+SYMBOL TABLE SSA
+(const byte*) DISPLAY_LIST[]  = { (byte) $70, (byte) $70, (byte) $70, (byte) $47, <(const byte*) TEXT, >(const byte*) TEXT, (byte) $41, <(const byte*) DISPLAY_LIST, >(const byte*) DISPLAY_LIST }
+(const nomodify byte**) SDLST = (byte**)(number) $230
+(const nomodify byte*) SDMCTL = (byte*)(number) $22f
+(const byte*) TEXT[]  = { (byte)(byte) 'h'|(number) $20, (byte)(byte) 'e'|(number) $20, (byte)(byte) 'l'|(number) $20, (byte)(byte) 'l'|(number) $20, (byte)(byte) 'o'|(number) $20, (byte) 0, (byte)(byte) 'x'|(number) $60, (byte)(byte) 't'|(number) $60, (byte) 0, (byte)(byte) 'w'|(number) $20, (byte)(byte) 'o'|(number) $20, (byte)(byte) 'r'|(number) $20, (byte)(byte) 'l'|(number) $20, (byte)(byte) 'd'|(number) $20, (byte) $41, (byte) 0, (byte) 0, (byte) 0, (byte) 0 }
+(void()) __start()
+(label) __start::@1
+(label) __start::@return
+(void()) main()
+(bool~) main::$0
+(label) main::@1
+(label) main::@return
+
+Adding number conversion cast (unumber) $20 in 
+Adding number conversion cast (unumber) $20 in 
+Adding number conversion cast (unumber) $20 in 
+Adding number conversion cast (unumber) $20 in 
+Adding number conversion cast (unumber) $20 in 
+Adding number conversion cast (unumber) $60 in 
+Adding number conversion cast (unumber) $60 in 
+Adding number conversion cast (unumber) $20 in 
+Adding number conversion cast (unumber) $20 in 
+Adding number conversion cast (unumber) $20 in 
+Adding number conversion cast (unumber) $20 in 
+Adding number conversion cast (unumber) $20 in 
+Adding number conversion cast (unumber) $21 in *((const nomodify byte*) SDMCTL) ← (number) $21
+Successful SSA optimization PassNAddNumberTypeConversions
+Inlining cast *((const nomodify byte*) SDMCTL) ← (unumber)(number) $21
+Successful SSA optimization Pass2InlineCast
+Simplifying constant pointer cast (byte*) 559
+Simplifying constant pointer cast (byte**) 560
+Simplifying constant integer cast $20
+Simplifying constant integer cast $20
+Simplifying constant integer cast $20
+Simplifying constant integer cast $20
+Simplifying constant integer cast $20
+Simplifying constant integer cast $60
+Simplifying constant integer cast $60
+Simplifying constant integer cast $20
+Simplifying constant integer cast $20
+Simplifying constant integer cast $20
+Simplifying constant integer cast $20
+Simplifying constant integer cast $20
+Simplifying constant integer cast $21
+Successful SSA optimization PassNCastSimplification
+Finalized unsigned number type (byte) $20
+Finalized unsigned number type (byte) $20
+Finalized unsigned number type (byte) $20
+Finalized unsigned number type (byte) $20
+Finalized unsigned number type (byte) $20
+Finalized unsigned number type (byte) $60
+Finalized unsigned number type (byte) $60
+Finalized unsigned number type (byte) $20
+Finalized unsigned number type (byte) $20
+Finalized unsigned number type (byte) $20
+Finalized unsigned number type (byte) $20
+Finalized unsigned number type (byte) $20
+Finalized unsigned number type (byte) $21
+Successful SSA optimization PassNFinalizeNumberTypeConversions
+Simple Condition (bool~) main::$0 [3] if((number) 0!=(number) 1) goto main::@1
+Successful SSA optimization Pass2ConditionalJumpSimplification
+if() condition always true - replacing block destination [3] if((number) 0!=(number) 1) goto main::@1
+Successful SSA optimization Pass2ConstantIfs
+Removing unused block main::@return
+Successful SSA optimization Pass2EliminateUnusedBlocks
+Removing unused procedure __start
+Removing unused procedure block __start
+Removing unused procedure block __start::@1
+Removing unused procedure block __start::@return
+Successful SSA optimization PassNEliminateEmptyStart
+Simplifying constant integer cast (byte) 'h'|(byte) $20
+Simplifying constant integer cast (byte) 'e'|(byte) $20
+Simplifying constant integer cast (byte) 'l'|(byte) $20
+Simplifying constant integer cast (byte) 'l'|(byte) $20
+Simplifying constant integer cast (byte) 'o'|(byte) $20
+Simplifying constant integer cast (byte) 'x'|(byte) $60
+Simplifying constant integer cast (byte) 't'|(byte) $60
+Simplifying constant integer cast (byte) 'w'|(byte) $20
+Simplifying constant integer cast (byte) 'o'|(byte) $20
+Simplifying constant integer cast (byte) 'r'|(byte) $20
+Simplifying constant integer cast (byte) 'l'|(byte) $20
+Simplifying constant integer cast (byte) 'd'|(byte) $20
+Successful SSA optimization PassNCastSimplification
+Adding NOP phi() at start of main::@1
+CALL GRAPH
+
+Created 0 initial phi equivalence classes
+Coalesced down to 0 phi equivalence classes
+Adding NOP phi() at start of main::@1
+
+FINAL CONTROL FLOW GRAPH
+
+(void()) main()
+main: scope:[main]  from
+  [0] *((const nomodify byte*) SDMCTL) ← (byte) $21
+  [1] *((const nomodify byte**) SDLST) ← (const byte*) DISPLAY_LIST
+  to:main::@1
+main::@1: scope:[main]  from main main::@1
+  [2] phi()
+  to:main::@1
+
+
+VARIABLE REGISTER WEIGHTS
+(void()) main()
+
+Initial phi equivalence classes
+Complete equivalence classes
+
+INITIAL ASM
+Target platform is atarixl / MOS6502X
+  // File Comments
+// Hello World for Atari XL / XE
+// XEX file format https://www.atarimax.com/jindroush.atari.org/afmtexe.html
+// Minimal Hello World https://atariage.com/forums/topic/229742-help-with-hello-world-in-mads/
+// Display Lists atariarchives.org/mapping/appendix8.php
+  // Upstart
+  // Atari XL/XE minimal XEX file
+// https://www.atarimax.com/jindroush.atari.org/afmtexe.html
+.file [name="helloxl.xex", type="bin", segments="XexFile"]
+.segmentdef Program [segments="ProgramStart, Code, Data, ProgramEnd"]
+.segmentdef ProgramStart [start=$2000]
+.segmentdef Code [startAfter="ProgramStart"]
+.segmentdef Data [startAfter="Code"]
+.segmentdef ProgramEnd [startAfter="Data"]
+.segment ProgramStart
+ProgramStart:
+.segment ProgramEnd
+ProgramEnd:
+.segmentdef XexFile
+.segment XexFile
+// Binary File Header
+.byte $ff, $ff
+// Program segment [start address, end address, data]
+.word ProgramStart, ProgramEnd
+.segmentout [ segments="Program" ]
+// RunAd - Run Address Segment [start address, end address, data]
+.word $02e0, $02e1
+.word main 
+  // Global Constants & labels
+  // OS Shadow ANTIC Direct Memory Access Control
+  .label SDMCTL = $22f
+  // OS Shadow ANTIC Display List Pointer
+  .label SDLST = $230
+.segment Code
+  // main
+main: {
+    // [0] *((const nomodify byte*) SDMCTL) ← (byte) $21 -- _deref_pbuc1=vbuc2 
+    // Enable DMA, Narrow Playfield into Shadow ANTIC Direct Memory Access Control
+    lda #$21
+    sta SDMCTL
+    // [1] *((const nomodify byte**) SDLST) ← (const byte*) DISPLAY_LIST -- _deref_qbuc1=pbuc2 
+    // Set Shadow ANTIC Display List Pointer
+    lda #<DISPLAY_LIST
+    sta SDLST
+    lda #>DISPLAY_LIST
+    sta SDLST+1
+    // [2] phi from main main::@1 to main::@1 [phi:main/main::@1->main::@1]
+  __b1_from_main:
+  __b1_from___b1:
+    jmp __b1
+  // Loop forever
+    // main::@1
+  __b1:
+    jmp __b1_from___b1
+}
+  // File Data
+.segment Data
+  // Message to show
+  // Encoding: atari_internal
+  TEXT: .byte 'h'|$20, 'e'|$20, 'l'|$20, 'l'|$20, 'o'|$20, 0, 'x'|$60, 't'|$60, 0, 'w'|$20, 'o'|$20, 'r'|$20, 'l'|$20, 'd'|$20, $41, 0, 0, 0, 0
+  // ANTIC Display List Program
+  // https://en.wikipedia.org/wiki/ANTIC
+  DISPLAY_LIST: .byte $70, $70, $70, $47, <TEXT, >TEXT, $41, <DISPLAY_LIST, >DISPLAY_LIST
+
+REGISTER UPLIFT POTENTIAL REGISTERS
+Statement [0] *((const nomodify byte*) SDMCTL) ← (byte) $21 [ ] (  [ ] { }  ) always clobbers reg byte a 
+Statement [1] *((const nomodify byte**) SDLST) ← (const byte*) DISPLAY_LIST [ ] (  [ ] { }  ) always clobbers reg byte a 
+
+REGISTER UPLIFT SCOPES
+Uplift Scope [main] 
+Uplift Scope [] 
+
+Uplifting [main] best 78 combination 
+Uplifting [] best 78 combination 
+
+ASSEMBLER BEFORE OPTIMIZATION
+  // File Comments
+// Hello World for Atari XL / XE
+// XEX file format https://www.atarimax.com/jindroush.atari.org/afmtexe.html
+// Minimal Hello World https://atariage.com/forums/topic/229742-help-with-hello-world-in-mads/
+// Display Lists atariarchives.org/mapping/appendix8.php
+  // Upstart
+  // Atari XL/XE minimal XEX file
+// https://www.atarimax.com/jindroush.atari.org/afmtexe.html
+.file [name="helloxl.xex", type="bin", segments="XexFile"]
+.segmentdef Program [segments="ProgramStart, Code, Data, ProgramEnd"]
+.segmentdef ProgramStart [start=$2000]
+.segmentdef Code [startAfter="ProgramStart"]
+.segmentdef Data [startAfter="Code"]
+.segmentdef ProgramEnd [startAfter="Data"]
+.segment ProgramStart
+ProgramStart:
+.segment ProgramEnd
+ProgramEnd:
+.segmentdef XexFile
+.segment XexFile
+// Binary File Header
+.byte $ff, $ff
+// Program segment [start address, end address, data]
+.word ProgramStart, ProgramEnd
+.segmentout [ segments="Program" ]
+// RunAd - Run Address Segment [start address, end address, data]
+.word $02e0, $02e1
+.word main 
+  // Global Constants & labels
+  // OS Shadow ANTIC Direct Memory Access Control
+  .label SDMCTL = $22f
+  // OS Shadow ANTIC Display List Pointer
+  .label SDLST = $230
+.segment Code
+  // main
+main: {
+    // [0] *((const nomodify byte*) SDMCTL) ← (byte) $21 -- _deref_pbuc1=vbuc2 
+    // Enable DMA, Narrow Playfield into Shadow ANTIC Direct Memory Access Control
+    lda #$21
+    sta SDMCTL
+    // [1] *((const nomodify byte**) SDLST) ← (const byte*) DISPLAY_LIST -- _deref_qbuc1=pbuc2 
+    // Set Shadow ANTIC Display List Pointer
+    lda #<DISPLAY_LIST
+    sta SDLST
+    lda #>DISPLAY_LIST
+    sta SDLST+1
+    // [2] phi from main main::@1 to main::@1 [phi:main/main::@1->main::@1]
+  __b1_from_main:
+  __b1_from___b1:
+    jmp __b1
+  // Loop forever
+    // main::@1
+  __b1:
+    jmp __b1_from___b1
+}
+  // File Data
+.segment Data
+  // Message to show
+  // Encoding: atari_internal
+  TEXT: .byte 'h'|$20, 'e'|$20, 'l'|$20, 'l'|$20, 'o'|$20, 0, 'x'|$60, 't'|$60, 0, 'w'|$20, 'o'|$20, 'r'|$20, 'l'|$20, 'd'|$20, $41, 0, 0, 0, 0
+  // ANTIC Display List Program
+  // https://en.wikipedia.org/wiki/ANTIC
+  DISPLAY_LIST: .byte $70, $70, $70, $47, <TEXT, >TEXT, $41, <DISPLAY_LIST, >DISPLAY_LIST
+
+ASSEMBLER OPTIMIZATIONS
+Removing instruction jmp __b1
+Succesful ASM optimization Pass5NextJumpElimination
+Removing instruction __b1_from_main:
+Succesful ASM optimization Pass5RedundantLabelElimination
+Removing instruction __b1:
+Succesful ASM optimization Pass5UnusedLabelElimination
+Relabelling long label __b1_from___b1 to __b1
+Succesful ASM optimization Pass5RelabelLongLabels
+
+FINAL SYMBOL TABLE
+(const byte*) DISPLAY_LIST[]  = { (byte) $70, (byte) $70, (byte) $70, (byte) $47, <(const byte*) TEXT, >(const byte*) TEXT, (byte) $41, <(const byte*) DISPLAY_LIST, >(const byte*) DISPLAY_LIST }
+(const nomodify byte**) SDLST = (byte**) 560
+(const nomodify byte*) SDMCTL = (byte*) 559
+(const byte*) TEXT[]  = { (byte) 'h'|(byte) $20, (byte) 'e'|(byte) $20, (byte) 'l'|(byte) $20, (byte) 'l'|(byte) $20, (byte) 'o'|(byte) $20, (byte) 0, (byte) 'x'|(byte) $60, (byte) 't'|(byte) $60, (byte) 0, (byte) 'w'|(byte) $20, (byte) 'o'|(byte) $20, (byte) 'r'|(byte) $20, (byte) 'l'|(byte) $20, (byte) 'd'|(byte) $20, (byte) $41, (byte) 0, (byte) 0, (byte) 0, (byte) 0 }
+(void()) main()
+(label) main::@1
+
+
+
+FINAL ASSEMBLER
+Score: 48
+
+  // File Comments
+// Hello World for Atari XL / XE
+// XEX file format https://www.atarimax.com/jindroush.atari.org/afmtexe.html
+// Minimal Hello World https://atariage.com/forums/topic/229742-help-with-hello-world-in-mads/
+// Display Lists atariarchives.org/mapping/appendix8.php
+  // Upstart
+  // Atari XL/XE minimal XEX file
+// https://www.atarimax.com/jindroush.atari.org/afmtexe.html
+.file [name="helloxl.xex", type="bin", segments="XexFile"]
+.segmentdef Program [segments="ProgramStart, Code, Data, ProgramEnd"]
+.segmentdef ProgramStart [start=$2000]
+.segmentdef Code [startAfter="ProgramStart"]
+.segmentdef Data [startAfter="Code"]
+.segmentdef ProgramEnd [startAfter="Data"]
+.segment ProgramStart
+ProgramStart:
+.segment ProgramEnd
+ProgramEnd:
+.segmentdef XexFile
+.segment XexFile
+// Binary File Header
+.byte $ff, $ff
+// Program segment [start address, end address, data]
+.word ProgramStart, ProgramEnd
+.segmentout [ segments="Program" ]
+// RunAd - Run Address Segment [start address, end address, data]
+.word $02e0, $02e1
+.word main 
+  // Global Constants & labels
+  // OS Shadow ANTIC Direct Memory Access Control
+  .label SDMCTL = $22f
+  // OS Shadow ANTIC Display List Pointer
+  .label SDLST = $230
+.segment Code
+  // main
+main: {
+    // *SDMCTL = 0x21
+    // [0] *((const nomodify byte*) SDMCTL) ← (byte) $21 -- _deref_pbuc1=vbuc2 
+    // Enable DMA, Narrow Playfield into Shadow ANTIC Direct Memory Access Control
+    lda #$21
+    sta SDMCTL
+    // *SDLST = DISPLAY_LIST
+    // [1] *((const nomodify byte**) SDLST) ← (const byte*) DISPLAY_LIST -- _deref_qbuc1=pbuc2 
+    // Set Shadow ANTIC Display List Pointer
+    lda #<DISPLAY_LIST
+    sta SDLST
+    lda #>DISPLAY_LIST
+    sta SDLST+1
+    // [2] phi from main main::@1 to main::@1 [phi:main/main::@1->main::@1]
+  __b1:
+  // Loop forever
+    // main::@1
+    jmp __b1
+}
+  // File Data
+.segment Data
+  // Message to show
+  // Encoding: atari_internal
+  TEXT: .byte 'h'|$20, 'e'|$20, 'l'|$20, 'l'|$20, 'o'|$20, 0, 'x'|$60, 't'|$60, 0, 'w'|$20, 'o'|$20, 'r'|$20, 'l'|$20, 'd'|$20, $41, 0, 0, 0, 0
+  // ANTIC Display List Program
+  // https://en.wikipedia.org/wiki/ANTIC
+  DISPLAY_LIST: .byte $70, $70, $70, $47, <TEXT, >TEXT, $41, <DISPLAY_LIST, >DISPLAY_LIST
+
--- a/src/test/ref/examples/atarixl/helloxl.sym
+++ b/src/test/ref/examples/atarixl/helloxl.sym
@ -0,0 +1,7 @@
+(const byte*) DISPLAY_LIST[]  = { (byte) $70, (byte) $70, (byte) $70, (byte) $47, <(const byte*) TEXT, >(const byte*) TEXT, (byte) $41, <(const byte*) DISPLAY_LIST, >(const byte*) DISPLAY_LIST }
+(const nomodify byte**) SDLST = (byte**) 560
+(const nomodify byte*) SDMCTL = (byte*) 559
+(const byte*) TEXT[]  = { (byte) 'h'|(byte) $20, (byte) 'e'|(byte) $20, (byte) 'l'|(byte) $20, (byte) 'l'|(byte) $20, (byte) 'o'|(byte) $20, (byte) 0, (byte) 'x'|(byte) $60, (byte) 't'|(byte) $60, (byte) 0, (byte) 'w'|(byte) $20, (byte) 'o'|(byte) $20, (byte) 'r'|(byte) $20, (byte) 'l'|(byte) $20, (byte) 'd'|(byte) $20, (byte) $41, (byte) 0, (byte) 0, (byte) 0, (byte) 0 }
+(void()) main()
+(label) main::@1
+