Amiga: validation export wave support

src/asm/68k/amigatest/README.md

@@ -16,13 +16,14 @@ go to file > export Amiga validation data...
 
 put sample.bin, seq.bin and wave.bin in this directory.
 
-compile with vasm:
+type `make`. you need vasm (68000 with Mot syntax) in order for it to work.
+alternatively, type:
 
 ```
-vasmm68k_mot -Fhunkexe -kick1hunks player.s
+vasmm68k_mot -Fhunkexe -kick1hunks -nosym -o player player.s
 ```
 
-run a.out on Amiga. it should play the exported song.
+run `player` on Amiga. it should play the exported song.
 
 # sequence format
 
@@ -31,7 +32,7 @@ run a.out on Amiga. it should play the exported song.
 - 00 xxxxxx yyyy: set loc/len
   - x: loc
   - y: len
-- 01 xxxx yy: initialize wavetable (xxxx: pos; yy: length)
+- 01 xxxxxx yyyy: initialize wavetable (xxxx: pos; yy: length)
 - 06 xxxx: set period
 - 08 xx: set volume
 - 0a xxxx: set data

src/asm/68k/amigatest/player.s

@@ -10,6 +10,7 @@ COLOR00 = $dff180
 chipBase=$dff000
 
 DMACONR = $02
+POTGOR = $16
 DMACON = $96
 ADKCON = $9e
 AUDBASE = $a0
@@ -25,6 +26,7 @@ AUD3VOL = $d8
 
 code_c
 init:
+  move.b #2,$bfe001
   lea chipBase,a0
   move.w #15,DMACON(a0)
 waitCon:
@@ -43,24 +45,37 @@ waitCon:
 main:
   bsr waitVBlank
 
-  ;move.w curColor,d0
+  move.w #$000,d4
-  ;move.w d0,COLOR00
+  move.w d4,COLOR00
-  ;addi.w #1,d0
-  ;move.w d0,curColor
 
+  lea chipBase,a0
+  btst.b #2,POTGOR(a0)
+  bne next
+
+  lea state(pc),a0
+  move.w #1,2(a0)
+
+next:
   bsr nextTick
 
-  bra main
+  lea state(pc),a0
+  tst.w 2(a0)
+  beq main
+finish:
+  lea chipBase,a0
+  move.w #15,DMACON(a0)
+  clr.l d0
+  rts
 
 waitVBlank:
   move.l (VPOSR),d0
   and.l #$1ff00,d0
-  cmp.l #$8c00,d0
+  cmp.l #$bc00,d0
   bne waitVBlank
 waitVBlank2:
   move.l (VPOSR),d0
   and.l #$1ff00,d0
-  cmp.l #$8d00,d0
+  cmp.l #$bd00,d0
   bne waitVBlank2
   rts
 
@@ -146,9 +161,7 @@ testFF:
   cmp.b #$ff,d0
   bne testOther
 theEnd:
-  move.w #$fff,d4
+  lea sequence(pc),a2
-  move.w d4,COLOR00
-  bra theEnd
 testOther:
   ; something else
   bra nextTick1
@@ -187,11 +200,44 @@ testChannel:
 chanNotZero:
   ; check for 8 (VOL)
   cmp.b #8,d0
-  bne chanOther
+  bne chanWaveChange
   ; write volume
   clr.w d2
   move.b (a2)+,d2
   bra chanWrite
+chanWaveChange:
+  ; check for 1 (wave change)
+  cmp.b #1,d0
+  bne chanOther
+  ; copy wave
+  clr.l d2
+  move.b (a2)+,d2
+  lsl.l #8,d2
+  or.b (a2)+,d2
+  lsl.l #8,d2
+  or.b (a2)+,d2
+  add.l #wavetable,d2
+  move.l d2,a0
+
+  lea sampleData,a1
+  andi.l #$30,d1
+  lsl.l #4,d1
+  adda.l d1,a1
+
+  clr.l d2
+  move.b (a2)+,d2
+  lsl.l #8,d2
+  or.b (a2)+,d2
+
+  ; don't copy a zero-length wave
+  tst.l d2
+  beq nextTick1
+copyWave:
+  move.w (a0)+,(a1)+
+  subq.l #2,d2
+  bne copyWave
+
+  bra nextTick1
 chanOther:
   ; get value and write
   clr.w d2
@@ -225,6 +271,7 @@ curColor:
 
 state:
   dc.w 0 ; ticks
+  dc.w 0 ; quit
 
   cnop 0,4
 
@@ -241,7 +288,8 @@ sequence:
 sampleData:
   incbin "sample.bin"
 
-;data_f
+  cnop 0,4
 
 wavetable:
   incbin "wave.bin"
+

src/engine/export/amigaValidation.cpp

@@ -21,8 +21,23 @@
 #include "../engine.h"
 #include "../platform/amiga.h"
 
+struct WaveEntry {
+  unsigned int pos;
+  short width;
+  signed char data[256];
+  WaveEntry():
+    pos(0),
+    width(32) {
+    memset(data,0,256);
+  }
+};
+
 std::vector<DivROMExportOutput> DivExportAmigaValidation::go(DivEngine* e) {
   std::vector<DivROMExportOutput> ret;
+  std::vector<WaveEntry> waves;
+  unsigned int wavesDataPtr=0;
+  WaveEntry curWaveState[4];
+
   DivPlatformAmiga* amiga=(DivPlatformAmiga*)e->getDispatch(0);
 
   e->stop();
@@ -54,13 +69,6 @@ std::vector<DivROMExportOutput> DivExportAmigaValidation::go(DivEngine* e) {
   sample->write(&((const unsigned char*)amiga->getSampleMem(0))[0x400],amiga->getSampleMemUsage(0)-0x400);
   if (sample->tell()&1) sample->writeC(0);
 
-  // wave.bin
-  SafeWriter* wave=new SafeWriter;
-  wave->init();
-  for (int i=0; i<32; i++) {
-    wave->writeC(i<<3);
-  }
-
   // seq.bin
   SafeWriter* seq=new SafeWriter;
   seq->init();
@@ -86,8 +94,54 @@ std::vector<DivROMExportOutput> DivExportAmigaValidation::go(DivEngine* e) {
     if (e->nextTick(false,true)) {
       done=true;
       amiga->getRegisterWrites().clear();
+      if (lastTick!=songTick) {
+        int delta=songTick-lastTick;
+        if (delta==1) {
+          seq->writeC(0xf1);
+        } else if (delta<256) {
+          seq->writeC(0xf2);
+          seq->writeC(delta-1);
+        } else if (delta<32768) {
+          seq->writeC(0xf3);
+          seq->writeS_BE(delta-1);
+        }
+        lastTick=songTick;
+      }
       break;
     }
+    // check wavetable changes
+    for (int i=0; i<4; i++) {
+      if (amiga->chan[i].useWave) {
+        if ((amiga->chan[i].audLen*2)!=curWaveState[i].width || memcmp(curWaveState[i].data,&(((signed char*)amiga->getSampleMem())[i<<8]),amiga->chan[i].audLen*2)!=0) {
+          curWaveState[i].width=amiga->chan[i].audLen*2;
+          memcpy(curWaveState[i].data,&(((signed char*)amiga->getSampleMem())[i<<8]),amiga->chan[i].audLen*2);
+
+          int waveNum=-1;
+          for (size_t j=0; j<waves.size(); j++) {
+            if (waves[j].width!=curWaveState[i].width) continue;
+            if (memcmp(waves[j].data,curWaveState[i].data,curWaveState[i].width)==0) {
+              waveNum=j;
+              break;
+            }
+          }
+          
+          if (waveNum==-1) {
+            // write new wavetable
+            waveNum=(int)waves.size();
+            curWaveState[i].pos=wavesDataPtr;
+            waves.push_back(curWaveState[i]);
+            wavesDataPtr+=curWaveState[i].width;
+          }
+
+          seq->writeC((i<<4)|1);
+          seq->writeC(waves[waveNum].pos>>16);
+          seq->writeC(waves[waveNum].pos>>8);
+          seq->writeC(waves[waveNum].pos);
+          seq->writeS_BE(waves[waveNum].width);
+        }
+      }
+    }
+
     // get register writes
     std::vector<DivRegWrite>& writes=amiga->getRegisterWrites();
     for (DivRegWrite& j: writes) {
@@ -144,6 +198,13 @@ std::vector<DivROMExportOutput> DivExportAmigaValidation::go(DivEngine* e) {
 
   EXTERN_BUSY_END;
 
+  // wave.bin
+  SafeWriter* wave=new SafeWriter;
+  wave->init();
+  for (WaveEntry& i: waves) {
+    wave->write(i.data,i.width);
+  }
+
   // finish
   ret.push_back(DivROMExportOutput("sample.bin",sample));
   ret.push_back(DivROMExportOutput("wave.bin",wave));

src/engine/platform/amiga.cpp

@@ -509,7 +509,7 @@ void DivPlatformAmiga::tick(bool sysTick) {
   if (dmaOn) rWrite(0x96,0x8000|dmaOn);
 
   for (int i=0; i<4; i++) {
-    if ((dmaOn&(1<<i)) && dumpWrites) {
+    if ((dmaOn&(1<<i)) && !chan[i].useWave && dumpWrites) {
       addWrite(0x200+i,(chan[i].irLocH<<16)|chan[i].irLocL);
       addWrite(0x204+i,chan[i].irLen);
     }

src/engine/platform/amiga.h

@@ -116,6 +116,7 @@ class DivPlatformAmiga: public DivDispatch {
 
   friend void putDispatchChip(void*,int);
   friend void putDispatchChan(void*,int,int);
+  friend class DivExportAmigaValidation;
 
   void irq(int ch);
   void rWrite(unsigned short addr, unsigned short val);