giga-refactor, part 9

new format saving
compatibility flags now part of own struct

papers/format.md

@@ -135,7 +135,9 @@ size | description
  STR | system name (Japanese)
  STR | album/category/game name (Japanese)
   4f | A-4 tuning
+  1  | automatic system name
  --- | **system definition**
+  4f | master volume, 1.0f=100%
   2  | total number of channels
   2  | number of chips
  --- | **chip definition (×numChips)**
@@ -149,11 +151,10 @@ size | description
  4?? | patchbay
      | - see next section for more details.
   1  | automatic patchbay
- --- | **song elements**
+ --- | **song elements (repeated until element type is 0)**
   1  | element type
- 4?? | pointers to elements
-     | - a zero pointer means "end of list".
-     | - if the element is unique, only a single pointer will be present.
+  4  | number of elements
+ 4?? | pointers to elements (×numElements)
 ```
 
 ## list of sound chips
@@ -313,7 +314,7 @@ the following element types are available:
  09 | CMNT | song comments*
  0a | GROV | groove pattern
 
-* element is unique (read only one pointer and assume the pointer list is over)
+* element is unique (number of elements shall be 1)
 
 ** first pointer is for instruments, second for wavetables and third for samples
 ```

src/engine/cmdStream.cpp

@@ -596,7 +596,7 @@ bool DivCSPlayer::tick() {
     }
 
     if (chan[i].portaSpeed) {
-      e->dispatchCmd(DivCommand(DIV_CMD_NOTE_PORTA,i,chan[i].portaSpeed*(e->song.linearPitch?e->song.pitchSlideSpeed:1),chan[i].portaTarget));
+      e->dispatchCmd(DivCommand(DIV_CMD_NOTE_PORTA,i,chan[i].portaSpeed*(e->song.compatFlags.linearPitch?e->song.compatFlags.pitchSlideSpeed:1),chan[i].portaTarget));
     }
     if (chan[i].arp && !chan[i].portaSpeed) {
       if (chan[i].arpTicks==0) {

src/engine/dispatch.h

@@ -1082,10 +1082,10 @@ class DivDispatch {
 #define NOTE_FNUM_BLOCK(x,bits,blk) parent->calcBaseFreqFNumBlock(chipClock,CHIP_FREQBASE,x,bits,blk)
 
 // this is for volume scaling calculation.
-#define VOL_SCALE_LINEAR(x,y,range) ((parent->song.ceilVolumeScaling)?((((x)*(y))+(range-1))/(range)):(((x)*(y))/(range)))
+#define VOL_SCALE_LINEAR(x,y,range) ((parent->song.compatFlags.ceilVolumeScaling)?((((x)*(y))+(range-1))/(range)):(((x)*(y))/(range)))
 #define VOL_SCALE_LOG(x,y,range) (CLAMP(((x)+(y))-(range),0,(range)))
-#define VOL_SCALE_LINEAR_BROKEN(x,y,range) ((parent->song.newVolumeScaling)?(VOL_SCALE_LINEAR(x,y,range)):(VOL_SCALE_LOG(x,y,range)))
-#define VOL_SCALE_LOG_BROKEN(x,y,range) ((parent->song.newVolumeScaling)?(VOL_SCALE_LOG(x,y,range)):(VOL_SCALE_LINEAR(x,y,range)))
+#define VOL_SCALE_LINEAR_BROKEN(x,y,range) ((parent->song.compatFlags.newVolumeScaling)?(VOL_SCALE_LINEAR(x,y,range)):(VOL_SCALE_LOG(x,y,range)))
+#define VOL_SCALE_LOG_BROKEN(x,y,range) ((parent->song.compatFlags.newVolumeScaling)?(VOL_SCALE_LOG(x,y,range)):(VOL_SCALE_LINEAR(x,y,range)))
 
 // these are here for convenience.
 // it is encouraged to use these, since you get an exact value this way.
@@ -1098,7 +1098,7 @@ class DivDispatch {
   if ((x)<(xMin)) (x)=(xMin); \
   if ((x)>(xMax)) (x)=(xMax);
 
-#define NEW_ARP_STRAT (parent->song.linearPitch && !parent->song.oldArpStrategy)
+#define NEW_ARP_STRAT (parent->song.compatFlags.linearPitch && !parent->song.compatFlags.oldArpStrategy)
 #define HACKY_LEGATO_MESS chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode && !NEW_ARP_STRAT
 
 #endif

src/engine/engine.cpp

@@ -168,7 +168,7 @@ const char* DivEngine::getEffectDesc(unsigned char effect, int chan, bool notNul
       return _("FFxx: Stop song");
     default:
       if ((effect&0xf0)==0x90) {
-        if (song.oldSampleOffset) {
+        if (song.compatFlags.oldSampleOffset) {
           return _("9xxx: Set sample offset*256");
         }
         switch (effect) {
@@ -205,7 +205,7 @@ const char* DivEngine::getEffectDesc(unsigned char effect, int chan, bool notNul
 
 void DivEngine::calcSongTimestamps() {
   if (curSubSong!=NULL) {
-    curSubSong->calcTimestamps(song.chans,song.grooves,song.jumpTreatment,song.ignoreJumpAtEnd,song.brokenSpeedSel,song.delayBehavior);
+    curSubSong->calcTimestamps(song.chans,song.grooves,song.compatFlags.jumpTreatment,song.compatFlags.ignoreJumpAtEnd,song.compatFlags.brokenSpeedSel,song.compatFlags.delayBehavior);
   }
 }
 
@@ -1813,7 +1813,7 @@ int DivEngine::calcBaseFreq(double clock, double divider, int note, bool period)
 }*/
 
 double DivEngine::calcBaseFreq(double clock, double divider, int note, bool period) {
-  if (song.linearPitch) { // linear
+  if (song.compatFlags.linearPitch) { // linear
     return (note<<7);
   }
   double base=(period?(song.tuning*0.0625):song.tuning)*pow(2.0,(float)(note+3)/12.0);
@@ -1863,7 +1863,7 @@ double DivEngine::calcBaseFreq(double clock, double divider, int note, bool peri
   return bf|((block)<<(bits));
 
 int DivEngine::calcBaseFreqFNumBlock(double clock, double divider, int note, int bits, int fixedBlock) {
-  if (song.linearPitch) { // linear
+  if (song.compatFlags.linearPitch) { // linear
     return (note<<7);
   }
   int bf=calcBaseFreq(clock,divider,note,false);
@@ -1876,10 +1876,10 @@ int DivEngine::calcBaseFreqFNumBlock(double clock, double divider, int note, int
 
 int DivEngine::calcFreq(int base, int pitch, int arp, bool arpFixed, bool period, int octave, int pitch2, double clock, double divider, int blockBits, int fixedBlock) {
   // linear pitch
-  if (song.linearPitch) {
+  if (song.compatFlags.linearPitch) {
     // do frequency calculation here
     int nbase=base+pitch+pitch2;
-    if (!song.oldArpStrategy) {
+    if (!song.compatFlags.oldArpStrategy) {
       if (arpFixed) {
         nbase=(arp<<7)+pitch+pitch2;
       } else {
@@ -2178,7 +2178,7 @@ void DivEngine::reset() {
       chan[i].volMax=(disCont[song.dispatchOfChan[i]].dispatch->dispatch(DivCommand(DIV_CMD_GET_VOLMAX,song.dispatchChanOfChan[i]))<<8)|0xff;
     }
     chan[i].volume=chan[i].volMax;
-    if (!song.linearPitch) chan[i].vibratoFine=4;
+    if (!song.compatFlags.linearPitch) chan[i].vibratoFine=4;
   }
   extValue=0;
   extValuePresent=0;
@@ -2436,7 +2436,7 @@ double DivEngine::getSamplePreviewRate() {
 }
 
 double DivEngine::getCenterRate() {
-  return song.oldCenterRate?8363.0:8372.0;
+  return song.compatFlags.oldCenterRate?8363.0:8372.0;
 }
 
 String DivEngine::getConfigPath() {

src/engine/engine.h

@@ -55,7 +55,7 @@ class DivWorkPool;
 
 #define DIV_UNSTABLE
 
-#define DIV_VERSION "inf2 - DO NOT SAVE!"
+#define DIV_VERSION "inf2/dev240 - DO NOT LOAD!"
 #define DIV_ENGINE_VERSION 240
 // for imports
 #define DIV_VERSION_MOD 0xff01

src/engine/fileOps/dmf.cpp

@@ -172,56 +172,56 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
 
     // compatibility flags
     if (!getConfInt("noDMFCompat",0)) {
-      ds.limitSlides=true;
-      ds.linearPitch=1;
-      ds.loopModality=0;
-      ds.properNoiseLayout=false;
-      ds.waveDutyIsVol=false;
+      ds.compatFlags.limitSlides=true;
+      ds.compatFlags.linearPitch=1;
+      ds.compatFlags.loopModality=0;
+      ds.compatFlags.properNoiseLayout=false;
+      ds.compatFlags.waveDutyIsVol=false;
       // TODO: WHAT?! geodude.dmf fails when this is true
       // but isn't that how Defle behaves???
-      ds.resetMacroOnPorta=false;
-      ds.legacyVolumeSlides=true;
-      ds.compatibleArpeggio=true;
-      ds.noteOffResetsSlides=true;
-      ds.targetResetsSlides=true;
-      ds.arpNonPorta=false;
-      ds.algMacroBehavior=false;
-      ds.brokenShortcutSlides=false;
-      ds.ignoreDuplicateSlides=true;
-      ds.brokenDACMode=true;
-      ds.oneTickCut=false;
-      ds.newInsTriggersInPorta=true;
-      ds.arp0Reset=true;
-      ds.brokenSpeedSel=true;
-      ds.noSlidesOnFirstTick=false;
-      ds.rowResetsArpPos=false;
-      ds.ignoreJumpAtEnd=true;
-      ds.buggyPortaAfterSlide=true;
-      ds.gbInsAffectsEnvelope=true;
-      ds.ignoreDACModeOutsideIntendedChannel=false;
-      ds.e1e2AlsoTakePriority=true;
-      ds.fbPortaPause=true;
-      ds.snDutyReset=true;
-      ds.oldOctaveBoundary=false;
-      ds.noOPN2Vol=true;
-      ds.newVolumeScaling=false;
-      ds.volMacroLinger=false;
-      ds.brokenOutVol=true;
-      ds.brokenOutVol2=true;
-      ds.e1e2StopOnSameNote=true;
-      ds.brokenPortaArp=false;
-      ds.snNoLowPeriods=true;
-      ds.disableSampleMacro=true;
-      ds.preNoteNoEffect=true;
-      ds.oldDPCM=true;
-      ds.delayBehavior=0;
-      ds.jumpTreatment=2;
-      ds.oldAlwaysSetVolume=true;
+      ds.compatFlags.resetMacroOnPorta=false;
+      ds.compatFlags.legacyVolumeSlides=true;
+      ds.compatFlags.compatibleArpeggio=true;
+      ds.compatFlags.noteOffResetsSlides=true;
+      ds.compatFlags.targetResetsSlides=true;
+      ds.compatFlags.arpNonPorta=false;
+      ds.compatFlags.algMacroBehavior=false;
+      ds.compatFlags.brokenShortcutSlides=false;
+      ds.compatFlags.ignoreDuplicateSlides=true;
+      ds.compatFlags.brokenDACMode=true;
+      ds.compatFlags.oneTickCut=false;
+      ds.compatFlags.newInsTriggersInPorta=true;
+      ds.compatFlags.arp0Reset=true;
+      ds.compatFlags.brokenSpeedSel=true;
+      ds.compatFlags.noSlidesOnFirstTick=false;
+      ds.compatFlags.rowResetsArpPos=false;
+      ds.compatFlags.ignoreJumpAtEnd=true;
+      ds.compatFlags.buggyPortaAfterSlide=true;
+      ds.compatFlags.gbInsAffectsEnvelope=true;
+      ds.compatFlags.ignoreDACModeOutsideIntendedChannel=false;
+      ds.compatFlags.e1e2AlsoTakePriority=true;
+      ds.compatFlags.fbPortaPause=true;
+      ds.compatFlags.snDutyReset=true;
+      ds.compatFlags.oldOctaveBoundary=false;
+      ds.compatFlags.noOPN2Vol=true;
+      ds.compatFlags.newVolumeScaling=false;
+      ds.compatFlags.volMacroLinger=false;
+      ds.compatFlags.brokenOutVol=true;
+      ds.compatFlags.brokenOutVol2=true;
+      ds.compatFlags.e1e2StopOnSameNote=true;
+      ds.compatFlags.brokenPortaArp=false;
+      ds.compatFlags.snNoLowPeriods=true;
+      ds.compatFlags.disableSampleMacro=true;
+      ds.compatFlags.preNoteNoEffect=true;
+      ds.compatFlags.oldDPCM=true;
+      ds.compatFlags.delayBehavior=0;
+      ds.compatFlags.jumpTreatment=2;
+      ds.compatFlags.oldAlwaysSetVolume=true;
 
       // 1.1 compat flags
       if (ds.version>24) {
-        ds.waveDutyIsVol=true;
-        ds.legacyVolumeSlides=false;
+        ds.compatFlags.waveDutyIsVol=true;
+        ds.compatFlags.legacyVolumeSlides=false;
       }
 
       // Neo Geo detune is caused by Defle running Neo Geo at the wrong clock.

src/engine/fileOps/fc.cpp

@@ -147,12 +147,12 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
     DivSong ds;
     ds.tuning=436.0;
     ds.version=DIV_VERSION_FC;
-    //ds.linearPitch=0;
-    //ds.pitchMacroIsLinear=false;
-    //ds.noSlidesOnFirstTick=true;
-    //ds.rowResetsArpPos=true;
-    ds.pitchSlideSpeed=8;
-    ds.ignoreJumpAtEnd=false;
+    //ds.compatFlags.linearPitch=0;
+    //ds.compatFlags.pitchMacroIsLinear=false;
+    //ds.compatFlags.noSlidesOnFirstTick=true;
+    //ds.compatFlags.rowResetsArpPos=true;
+    ds.compatFlags.pitchSlideSpeed=8;
+    ds.compatFlags.ignoreJumpAtEnd=false;
 
     // load here
     if (!reader.seek(0,SEEK_SET)) {

src/engine/fileOps/ftm.cpp

@@ -495,7 +495,7 @@ bool DivEngine::loadFTM(unsigned char* file, size_t len, bool dnft, bool dnft_si
     }
     ds.subsong.clear();
 
-    ds.linearPitch = 0;
+    ds.compatFlags.linearPitch = 0;
 
     unsigned int pal = 0;
 
@@ -2378,7 +2378,7 @@ bool DivEngine::loadFTM(unsigned char* file, size_t len, bool dnft, bool dnft_si
         CHECK_BLOCK_VERSION(3);
         unsigned int linear_pitch = reader.readI();
 
-        ds.linearPitch = linear_pitch == 0 ? 0 : 1;
+        ds.compatFlags.linearPitch = linear_pitch == 0 ? 0 : 1;
 
         if (blockVersion >= 2) {
           int fineTuneCents = reader.readC() * 100;

src/engine/fileOps/it.cpp

@@ -219,10 +219,10 @@ bool DivEngine::loadIT(unsigned char* file, size_t len) {
   try {
     DivSong ds;
     ds.version=DIV_VERSION_IT;
-    ds.noSlidesOnFirstTick=true;
-    ds.rowResetsArpPos=true;
-    ds.ignoreJumpAtEnd=false;
-    ds.pitchSlideSpeed=8;
+    ds.compatFlags.noSlidesOnFirstTick=true;
+    ds.compatFlags.rowResetsArpPos=true;
+    ds.compatFlags.ignoreJumpAtEnd=false;
+    ds.compatFlags.pitchSlideSpeed=8;
 
     logV("Impulse Tracker module");
 
@@ -277,9 +277,9 @@ bool DivEngine::loadIT(unsigned char* file, size_t len) {
     }
 
     if (flags&8) {
-      ds.linearPitch=1;
+      ds.compatFlags.linearPitch=1;
     } else {
-      ds.linearPitch=0;
+      ds.compatFlags.linearPitch=0;
     }
 
     unsigned char globalVol=reader.readC();
@@ -1667,7 +1667,7 @@ bool DivEngine::loadIT(unsigned char* file, size_t len) {
     for (int i=0; i<(maxChan+32)>>5; i++) {
       ds.system[i]=DIV_SYSTEM_ES5506;
       ds.systemFlags[i].set("amigaVol",true);
-      if (!ds.linearPitch) {
+      if (!ds.compatFlags.linearPitch) {
         ds.systemFlags[i].set("amigaPitch",true);
       }
     }

src/engine/fileOps/mod.cpp

@@ -41,11 +41,11 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
     DivSong ds;
     ds.tuning=436.0;
     ds.version=DIV_VERSION_MOD;
-    ds.linearPitch=0;
-    ds.noSlidesOnFirstTick=true;
-    ds.rowResetsArpPos=true;
-    ds.ignoreJumpAtEnd=false;
-    ds.delayBehavior=0;
+    ds.compatFlags.linearPitch=0;
+    ds.compatFlags.noSlidesOnFirstTick=true;
+    ds.compatFlags.rowResetsArpPos=true;
+    ds.compatFlags.ignoreJumpAtEnd=false;
+    ds.compatFlags.delayBehavior=0;
 
     int insCount=31;
     bool bypassLimits=false;

src/engine/fileOps/s3m.cpp

@@ -79,12 +79,12 @@ bool DivEngine::loadS3M(unsigned char* file, size_t len) {
   try {
     DivSong ds;
     ds.version=DIV_VERSION_S3M;
-    ds.linearPitch=0;
-    ds.pitchMacroIsLinear=false;
-    ds.noSlidesOnFirstTick=true;
-    ds.rowResetsArpPos=true;
-    ds.ignoreJumpAtEnd=false;
-    ds.pitchSlideSpeed=12;
+    ds.compatFlags.linearPitch=0;
+    ds.compatFlags.pitchMacroIsLinear=false;
+    ds.compatFlags.noSlidesOnFirstTick=true;
+    ds.compatFlags.rowResetsArpPos=true;
+    ds.compatFlags.ignoreJumpAtEnd=false;
+    ds.compatFlags.pitchSlideSpeed=12;
 
     logV("Scream Tracker 3 module");
 

src/engine/fileOps/tfm.cpp

@@ -551,7 +551,7 @@ bool DivEngine::loadTFMv1(unsigned char* file, size_t len) {
     ds.systemLen=1;
 
     ds.system[0]=DIV_SYSTEM_YM2612;
-    ds.loopModality=1;
+    ds.compatFlags.loopModality=1;
 
     unsigned char speed=reader.readCNoRLE();
     unsigned char interleaveFactor=reader.readCNoRLE();
@@ -746,7 +746,7 @@ bool DivEngine::loadTFMv2(unsigned char* file, size_t len) {
     ds.systemLen=1;
 
     ds.system[0]=DIV_SYSTEM_YM2612;
-    ds.loopModality=1;
+    ds.compatFlags.loopModality=1;
 
     unsigned char magic[8]={0};
 

src/engine/fileOps/xm.cpp

@@ -207,12 +207,12 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
   try {
     DivSong ds;
     ds.version=DIV_VERSION_XM;
-    //ds.linearPitch=0;
-    //ds.pitchMacroIsLinear=false;
-    ds.noSlidesOnFirstTick=true;
-    ds.rowResetsArpPos=true;
-    ds.ignoreJumpAtEnd=false;
-    ds.pitchSlideSpeed=8;
+    //ds.compatFlags.linearPitch=0;
+    //ds.compatFlags.pitchMacroIsLinear=false;
+    ds.compatFlags.noSlidesOnFirstTick=true;
+    ds.compatFlags.rowResetsArpPos=true;
+    ds.compatFlags.ignoreJumpAtEnd=false;
+    ds.compatFlags.pitchSlideSpeed=8;
 
     logV("Extended Module");
 
@@ -251,7 +251,7 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
     unsigned short totalChans=reader.readS();
     unsigned short patCount=reader.readS();
     ds.insLen=(unsigned short)reader.readS();
-    ds.linearPitch=(reader.readS()&1)?1:0;
+    ds.compatFlags.linearPitch=(reader.readS()&1)?1:0;
     ds.subsong[0]->speeds.val[0]=reader.readS();
     ds.subsong[0]->speeds.len=1;
     double bpm=(unsigned short)reader.readS();
@@ -304,7 +304,7 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
     for (int i=0; i<(totalChans+31)>>5; i++) {
       ds.system[i]=DIV_SYSTEM_ES5506;
       ds.systemFlags[i].set("amigaVol",true);
-      ds.systemFlags[i].set("amigaPitch",(ds.linearPitch==0));
+      ds.systemFlags[i].set("amigaPitch",(ds.compatFlags.linearPitch==0));
       ds.systemFlags[i].set("volScale",3900);
     }
     ds.systemLen=(totalChans+31)>>5;

src/engine/macroInt.cpp

@@ -43,7 +43,7 @@ void DivMacroStruct::prepare(DivInstrumentMacro& source, DivEngine* e) {
   mode=source.mode;
   type=(source.open>>1)&3;
   activeRelease=source.open&8;
-  linger=(source.macroType==DIV_MACRO_VOL && e->song.volMacroLinger);
+  linger=(source.macroType==DIV_MACRO_VOL && e->song.compatFlags.volMacroLinger);
   lfoPos=LFO_PHASE;
 }
 

src/engine/platform/amiga.cpp

@@ -668,7 +668,7 @@ int DivPlatformAmiga::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
         chan[c.chan].writeVol=true;
       }
@@ -752,9 +752,9 @@ int DivPlatformAmiga::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/arcade.cpp

@@ -260,7 +260,7 @@ void DivPlatformArcade::tick(bool sysTick) {
       } else {
         rWrite(chanOffs[i]+ADDR_LR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3)|((chan[i].chVolL&1)<<6)|((chan[i].chVolR&1)<<7));
       }
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
         if (isMuted[i] || !op.enable) {
@@ -379,7 +379,7 @@ void DivPlatformArcade::tick(bool sysTick) {
   for (int i=0; i<8; i++) {
     if (chan[i].freqChanged) {
       chan[i].freq=chan[i].baseFreq+chan[i].pitch-128+chan[i].pitch2;
-      if (!parent->song.oldArpStrategy) {
+      if (!parent->song.compatFlags.oldArpStrategy) {
         if (chan[i].fixedArp) {
           chan[i].freq=(chan[i].baseNoteOverride<<7)+chan[i].pitch-128+chan[i].pitch2;
         } else {
@@ -862,7 +862,7 @@ int DivPlatformArcade::dispatch(DivCommand c) {
       return 127;
       break;
     case DIV_CMD_PRE_PORTA:
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_LINEAR(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_LINEAR(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_PRE_NOTE:

src/engine/platform/ay.cpp

@@ -716,7 +716,7 @@ int DivPlatformAY8910::dispatch(DivCommand c) {
         }
         chan[c.chan].active=true;
         chan[c.chan].macroInit(ins);
-        if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+        if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
           chan[c.chan].outVol=chan[c.chan].vol;
         }
         //chan[c.chan].keyOn=true;
@@ -735,7 +735,7 @@ int DivPlatformAY8910::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (!(chan[c.chan].nextPSGMode.val&8)) {
@@ -942,9 +942,9 @@ int DivPlatformAY8910::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AY));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AY));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_PRE_NOTE:

src/engine/platform/ay8930.cpp

@@ -544,7 +544,7 @@ int DivPlatformAY8930::dispatch(DivCommand c) {
         }
         chan[c.chan].active=true;
         chan[c.chan].macroInit(ins);
-        if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+        if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
           chan[c.chan].outVol=chan[c.chan].vol;
         }
         //chan[c.chan].keyOn=true;
@@ -563,7 +563,7 @@ int DivPlatformAY8930::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (!(chan[c.chan].nextPSGMode.val&8)) {
@@ -764,9 +764,9 @@ int DivPlatformAY8930::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AY8930));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AY8930));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_PRE_NOTE:

src/engine/platform/bifurcator.cpp

@@ -176,7 +176,7 @@ int DivPlatformBifurcator::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -250,9 +250,9 @@ int DivPlatformBifurcator::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_BIFURCATOR_STATE_LOAD:

src/engine/platform/bubsyswsg.cpp

@@ -164,7 +164,7 @@ int DivPlatformBubSysWSG::dispatch(DivCommand c) {
       chan[c.chan].keyOn=true;
       rWrite(2+c.chan,(chan[c.chan].wave<<5)|chan[c.chan].vol);
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (chan[c.chan].wave<0) {
@@ -243,9 +243,9 @@ int DivPlatformBubSysWSG::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SCC));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SCC));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/c140.cpp

@@ -357,7 +357,7 @@ int DivPlatformC140::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
         chan[c.chan].volChangedL=true;
         chan[c.chan].volChangedR=true;
@@ -445,9 +445,9 @@ int DivPlatformC140::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/c64.cpp

@@ -574,12 +574,12 @@ int DivPlatformC64::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta || parent->song.preNoteNoEffect) {
+        if (parent->song.compatFlags.resetMacroOnPorta || parent->song.compatFlags.preNoteNoEffect) {
           chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_C64));
           chan[c.chan].keyOn=true;
         }
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_PRE_NOTE:

src/engine/platform/dave.cpp

@@ -358,7 +358,7 @@ int DivPlatformDave::dispatch(DivCommand c) {
       chan[c.chan].keyOn=true;
       chan[c.chan].writeVol=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       chan[c.chan].insChanged=false;
@@ -471,9 +471,9 @@ int DivPlatformDave::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_DAVE));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_DAVE));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/es5506.cpp

@@ -23,7 +23,7 @@
 #include <math.h>
 
 #define PITCH_OFFSET ((double)(16*2048*(chanMax+1)))
-#define NOTE_ES5506(c,note) ((amigaPitch && !parent->song.linearPitch)?parent->calcBaseFreq(COLOR_NTSC*16,chan[c].pcm.freqOffs,note,true):parent->calcBaseFreq(chipClock,chan[c].pcm.freqOffs,note,false))
+#define NOTE_ES5506(c,note) ((amigaPitch && !parent->song.compatFlags.linearPitch)?parent->calcBaseFreq(COLOR_NTSC*16,chan[c].pcm.freqOffs,note,true):parent->calcBaseFreq(chipClock,chan[c].pcm.freqOffs,note,false))
 
 #define rWrite(a,...) {if(!skipRegisterWrites) {hostIntf32.push_back(QueuedHostIntf(4,(a),__VA_ARGS__)); }}
 #define immWrite(a,...) {hostIntf32.push_back(QueuedHostIntf(4,(a),__VA_ARGS__));}
@@ -603,7 +603,7 @@ void DivPlatformES5506::tick(bool sysTick) {
             const unsigned int length=s->samples-1;
             const unsigned int end=start+(length<<11);
             const unsigned int nextBank=(offES5506>>22)&3;
-            const double nextFreqOffs=((amigaPitch && !parent->song.linearPitch)?16:PITCH_OFFSET)*off;
+            const double nextFreqOffs=((amigaPitch && !parent->song.compatFlags.linearPitch)?16:PITCH_OFFSET)*off;
             chan[i].pcm.loopMode=loopMode;
             chan[i].pcm.bank=nextBank;
             chan[i].pcm.start=start;
@@ -746,7 +746,7 @@ void DivPlatformES5506::tick(bool sysTick) {
       chan[i].pcm.nextPos=0;
     }
     if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
-      if (amigaPitch && !parent->song.linearPitch) {
+      if (amigaPitch && !parent->song.compatFlags.linearPitch) {
         chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch*16,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,true,2,chan[i].pitch2*16,16*COLOR_NTSC,chan[i].pcm.freqOffs);
         chan[i].freq=PITCH_OFFSET*(COLOR_NTSC/chan[i].freq)/(chipClock/16.0);
         chan[i].freq=CLAMP(chan[i].freq,0,0x1ffff);
@@ -767,7 +767,7 @@ void DivPlatformES5506::tick(bool sysTick) {
           }
           chan[i].pcm.loopStart=(chan[i].pcm.start+(s->loopStart<<11))&0xfffff800;
           chan[i].pcm.loopEnd=(chan[i].pcm.start+((s->loopEnd)<<11))&0xffffff80;
-          chan[i].pcm.freqOffs=((amigaPitch && !parent->song.linearPitch)?16:PITCH_OFFSET)*off;
+          chan[i].pcm.freqOffs=((amigaPitch && !parent->song.compatFlags.linearPitch)?16:PITCH_OFFSET)*off;
           unsigned int startPos=chan[i].pcm.direction?chan[i].pcm.end:chan[i].pcm.start;
           if (chan[i].pcm.nextPos) {
             const unsigned int start=chan[i].pcm.start;
@@ -1212,7 +1212,7 @@ int DivPlatformES5506::dispatch(DivCommand c) {
       int nextFreq=chan[c.chan].baseFreq;
       int destFreq=NOTE_ES5506(c.chan,c.value2+chan[c.chan].sampleNoteDelta);
       bool return2=false;
-      if (amigaPitch && !parent->song.linearPitch) {
+      if (amigaPitch && !parent->song.compatFlags.linearPitch) {
         c.value*=16;
       }
       if (destFreq>nextFreq) {
@@ -1244,9 +1244,9 @@ int DivPlatformES5506::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_ES5506));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_ES5506));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
         chan[c.chan].nextNote=chan[c.chan].note;
         chan[c.chan].noteChanged.note=1;
       }

src/engine/platform/esfm.cpp

@@ -337,7 +337,7 @@ void DivPlatformESFM::tick(bool sysTick) {
     if (chan[i].freqChanged) {
       int mul=2;
       int fixedBlock=chan[i].state.fm.block;
-      if (!parent->song.linearPitch) {
+      if (!parent->song.compatFlags.linearPitch) {
         mul=octave(chan[i].baseFreq,fixedBlock)*2;
       }
       chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,mul,chan[i].pitch2,chipClock,CHIP_FREQBASE);
@@ -569,7 +569,7 @@ int DivPlatformESFM::dispatch(DivCommand c) {
       bool return2=false;
       int mul=1;
       int fixedBlock=0;
-      if (!parent->song.linearPitch) {
+      if (!parent->song.compatFlags.linearPitch) {
         fixedBlock=chan[c.chan].state.fm.block;
         mul=octave(chan[c.chan].baseFreq,fixedBlock);
       }
@@ -586,7 +586,7 @@ int DivPlatformESFM::dispatch(DivCommand c) {
           return2=true;
         }
       }
-      if (!chan[c.chan].portaPause && !parent->song.linearPitch) {
+      if (!chan[c.chan].portaPause && !parent->song.compatFlags.linearPitch) {
         if (mul!=octave(newFreq,fixedBlock)) {
           chan[c.chan].portaPause=true;
           break;
@@ -987,7 +987,7 @@ int DivPlatformESFM::dispatch(DivCommand c) {
       return 63;
       break;
     case DIV_CMD_PRE_PORTA:
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
         chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       }
       chan[c.chan].inPorta=c.value;

src/engine/platform/fds.cpp

@@ -132,7 +132,7 @@ void DivPlatformFDS::tick(bool sysTick) {
     if (chan[i].std.duty.had) {
       chan[i].duty=chan[i].std.duty.val;
       if (i==3) {
-        if (parent->song.properNoiseLayout) {
+        if (parent->song.compatFlags.properNoiseLayout) {
           chan[i].duty&=1;
         } else if (chan[i].duty>1) {
           chan[i].duty=1;
@@ -264,7 +264,7 @@ int DivPlatformFDS::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (chan[c.chan].wave<0) {
@@ -390,9 +390,9 @@ int DivPlatformFDS::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_FDS));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_FDS));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/fmshared_OPN.h

@@ -31,7 +31,7 @@
   int newFreq; \
   bool return2=false; \
   if (_targetChan.portaPause) { \
-    if (parent->song.oldOctaveBoundary) { \
+    if (parent->song.compatFlags.oldOctaveBoundary) { \
       if ((_targetChan.portaPauseFreq&0xf800)>(_targetChan.baseFreq&0xf800)) { \
         _targetChan.baseFreq=((_targetChan.baseFreq&0x7ff)>>1)|(_targetChan.portaPauseFreq&0xf800); \
       } else { \
@@ -59,7 +59,7 @@
   /* what the heck! */ \
   if (!_targetChan.portaPause) { \
     if ((newFreq&0x7ff)>boundaryTop && (newFreq&0xf800)<0x3800) { \
-      if (parent->song.fbPortaPause) { \
+      if (parent->song.compatFlags.fbPortaPause) { \
         _targetChan.portaPauseFreq=(boundaryBottom)|((newFreq+0x800)&0xf800); \
         _targetChan.portaPause=true; \
         break; \
@@ -68,7 +68,7 @@
       } \
     } \
     if ((newFreq&0x7ff)<boundaryBottom && (newFreq&0xf800)>0) { \
-      if (parent->song.fbPortaPause) { \
+      if (parent->song.compatFlags.fbPortaPause) { \
         _targetChan.portaPauseFreq=newFreq=(boundaryTop-1)|((newFreq-0x800)&0xf800); \
         _targetChan.portaPause=true; \
         break; \

src/engine/platform/ga20.cpp

@@ -261,7 +261,7 @@ int DivPlatformGA20::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
         chan[c.chan].volumeChanged=true;
       }
@@ -332,9 +332,9 @@ int DivPlatformGA20::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/gb.cpp

@@ -224,7 +224,7 @@ void DivPlatformGB::tick(bool sysTick) {
       if (i!=2) {
         rWrite(16+i*5+1,((chan[i].duty&3)<<6)|(63-(chan[i].soundLen&63)));
       } else if (!chan[i].softEnv) {
-        if (parent->song.waveDutyIsVol) {
+        if (parent->song.compatFlags.waveDutyIsVol) {
           rWrite(16+i*5+2,(model==GB_MODEL_AGB_NATIVE?gbVolMapEx:gbVolMap)[(chan[i].std.duty.val&3)<<2]);
         }
       }
@@ -439,7 +439,7 @@ int DivPlatformGB::dispatch(DivCommand c) {
           chan[c.chan].outVol=chan[c.chan].envVol;
         }
       } else if (chan[c.chan].softEnv && c.chan!=2) {
-        if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+        if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
           chan[c.chan].outVol=chan[c.chan].vol;
           chan[c.chan].envVol=chan[c.chan].outVol;
         }
@@ -478,7 +478,7 @@ int DivPlatformGB::dispatch(DivCommand c) {
             chan[c.chan].soundLen=ins->gb.soundLen;
             chan[c.chan].vol=chan[c.chan].envVol;
             chan[c.chan].outVol=chan[c.chan].vol;
-            if (parent->song.gbInsAffectsEnvelope) {
+            if (parent->song.compatFlags.gbInsAffectsEnvelope) {
               rWrite(16+c.chan*5+2,((chan[c.chan].vol<<4))|(chan[c.chan].envLen&7)|((chan[c.chan].envDir&1)<<3));
             }
           }
@@ -567,9 +567,9 @@ int DivPlatformGB::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_GB));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_GB));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GB_SWEEP_DIR:

src/engine/platform/gbadma.cpp

@@ -237,7 +237,7 @@ int DivPlatformGBADMA::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].envVol=2;
       }
       if (chan[c.chan].useWave) {
@@ -321,7 +321,7 @@ int DivPlatformGBADMA::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
       chan[c.chan].inPorta=c.value;
       break;

src/engine/platform/gbaminmod.cpp

@@ -417,7 +417,7 @@ int DivPlatformGBAMinMod::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -503,9 +503,9 @@ int DivPlatformGBAMinMod::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/genesis.cpp

@@ -68,7 +68,7 @@ void DivPlatformGenesis::processDAC(int iRate) {
         if (chan[i].dacSample!=-1) {
           DivSample* s=parent->getSample(chan[i].dacSample);
           if (!isMuted[i] && s->samples>0 && chan[i].dacPos<s->samples) {
-            if (parent->song.noOPN2Vol) {
+            if (parent->song.compatFlags.noOPN2Vol) {
               chan[i].dacOutput=s->data8[chan[i].dacDirection?(s->samples-chan[i].dacPos-1):chan[i].dacPos];
             } else {
               chan[i].dacOutput=(s->data8[chan[i].dacDirection?(s->samples-chan[i].dacPos-1):chan[i].dacPos]*dacVolTable[chan[i].outVol])>>7;
@@ -110,7 +110,7 @@ void DivPlatformGenesis::processDAC(int iRate) {
         if (s->samples>0 && chan[5].dacPos<s->samples) {
           if (!isMuted[5]) {
             int sample;
-            if (parent->song.noOPN2Vol) {
+            if (parent->song.compatFlags.noOPN2Vol) {
               sample=s->data8[chan[5].dacDirection?(s->samples-chan[5].dacPos-1):chan[5].dacPos];
             } else {
               sample=(s->data8[chan[5].dacDirection?(s->samples-chan[5].dacPos-1):chan[5].dacPos]*dacVolTable[chan[5].outVol])>>7;
@@ -122,7 +122,7 @@ void DivPlatformGenesis::processDAC(int iRate) {
             chan[5].dacPos=s->loopStart;
           } else if (chan[5].dacPos>=s->samples) {
             chan[5].dacSample=-1;
-            if (parent->song.brokenDACMode) {
+            if (parent->song.compatFlags.brokenDACMode) {
               rWrite(0x2b,0);
             }
           }
@@ -768,7 +768,7 @@ void DivPlatformGenesis::tick(bool sysTick) {
     if (chan[i].std.alg.had) {
       chan[i].state.alg=chan[i].std.alg.val;
       rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
         if (isMuted[i] || !op.enable) {
@@ -863,7 +863,7 @@ void DivPlatformGenesis::tick(bool sysTick) {
 
   for (int i=0; i<512; i++) {
     if (pendingWrites[i]!=oldWrites[i]) {
-      if (i==0x2b && pendingWrites[i]!=0 && !parent->song.brokenDACMode) {
+      if (i==0x2b && pendingWrites[i]!=0 && !parent->song.compatFlags.brokenDACMode) {
         if (chan[5].keyOn) chan[5].keyOn=false;
         chan[5].keyOff=true;
       }
@@ -894,7 +894,7 @@ void DivPlatformGenesis::tick(bool sysTick) {
   for (int i=0; i<csmChan; i++) {
     if (i==2 && extMode) continue;
     if (chan[i].freqChanged) {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,2,chan[i].pitch2,chipClock,CHIP_FREQBASE,11,chan[i].state.block);
       } else {
         int fNum=parent->calcFreq(chan[i].baseFreq&0x7ff,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,2,chan[i].pitch2,chipClock,CHIP_FREQBASE,11);
@@ -1131,7 +1131,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
       if (c.chan>=5 && c.chan<csmChan) {
         chan[c.chan].dacSample=-1;
         if (dumpWrites) addWrite(0xffff0002,0);
-        if (parent->song.brokenDACMode) {
+        if (parent->song.compatFlags.brokenDACMode) {
           rWrite(0x2b,0);
           if (chan[c.chan].dacMode) break;
         }
@@ -1200,7 +1200,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_NOTE_PORTA: {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         int destFreq=NOTE_FREQUENCY(c.value2+chan[c.chan].sampleNoteDelta);
         bool return2=false;
         if (destFreq>chan[c.chan].baseFreq) {

src/engine/platform/genesisext.cpp

@@ -153,7 +153,7 @@ int DivPlatformGenesisExt::dispatch(DivCommand c) {
       } else {
         opChan[ch].pan=(c.value2>0)|((c.value>0)<<1);
       }
-      if (parent->song.sharedExtStat) {
+      if (parent->song.compatFlags.sharedExtStat) {
         for (int i=0; i<4; i++) {
           if (ch==i) continue;
           opChan[i].pan=opChan[ch].pan;
@@ -169,7 +169,7 @@ int DivPlatformGenesisExt::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_NOTE_PORTA: {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         int destFreq=NOTE_FREQUENCY(c.value2);
         bool return2=false;
         if (destFreq>opChan[ch].baseFreq) {
@@ -197,7 +197,7 @@ int DivPlatformGenesisExt::dispatch(DivCommand c) {
     }
     case DIV_CMD_SAMPLE_MODE: {
       // not ignored actually!
-      if (!parent->song.ignoreDACModeOutsideIntendedChannel) {
+      if (!parent->song.compatFlags.ignoreDACModeOutsideIntendedChannel) {
         chan[5].dacMode=c.value;
         rWrite(0x2b,c.value<<7);
       }
@@ -547,7 +547,7 @@ void DivPlatformGenesisExt::tick(bool sysTick) {
     if (opChan[i].std.alg.had) {
       chan[extChanOffs].state.alg=opChan[i].std.alg.val;
       rWrite(chanOffs[extChanOffs]+ADDR_FB_ALG,(chan[extChanOffs].state.alg&7)|(chan[extChanOffs].state.fb<<3));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[j];
         if (isOpMuted[j] || !op.enable) {
@@ -578,7 +578,7 @@ void DivPlatformGenesisExt::tick(bool sysTick) {
 
     if (opChan[i].std.panL.had) {
       opChan[i].pan=opChan[i].std.panL.val&3;
-      if (parent->song.sharedExtStat) {
+      if (parent->song.compatFlags.sharedExtStat) {
         for (int j=0; j<4; j++) {
           if (i==j) continue;
           opChan[j].pan=opChan[i].pan;
@@ -648,7 +648,7 @@ void DivPlatformGenesisExt::tick(bool sysTick) {
   unsigned char hardResetMask=0;
   if (extMode) for (int i=0; i<4; i++) {
     if (opChan[i].freqChanged) {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         opChan[i].freq=parent->calcFreq(opChan[i].baseFreq,opChan[i].pitch,opChan[i].fixedArp?opChan[i].baseNoteOverride:opChan[i].arpOff,opChan[i].fixedArp,false,2,opChan[i].pitch2,chipClock,CHIP_FREQBASE,11,chan[extChanOffs].state.block);
       } else {
         int fNum=parent->calcFreq(opChan[i].baseFreq&0x7ff,opChan[i].pitch,opChan[i].fixedArp?opChan[i].baseNoteOverride:opChan[i].arpOff,opChan[i].fixedArp,false,2,opChan[i].pitch2);

src/engine/platform/k007232.cpp

@@ -324,7 +324,7 @@ int DivPlatformK007232::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
         if (!isMuted[c.chan]) {
           chan[c.chan].volumeChanged=true;
@@ -405,9 +405,9 @@ int DivPlatformK007232::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/k053260.cpp

@@ -255,7 +255,7 @@ int DivPlatformK053260::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -331,9 +331,9 @@ int DivPlatformK053260::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/lynx.cpp

@@ -361,7 +361,7 @@ int DivPlatformLynx::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       WRITE_VOLUME(c.chan,(isMuted[c.chan]?0:(chan[c.chan].vol&127)));
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -429,7 +429,7 @@ int DivPlatformLynx::dispatch(DivCommand c) {
         }
       }
       chan[c.chan].freqChanged=true;
-      if (chan[c.chan].pcm && parent->song.linearPitch) {
+      if (chan[c.chan].pcm && parent->song.compatFlags.linearPitch) {
         chan[c.chan].sampleBaseFreq=chan[c.chan].baseFreq;
       }
       if (return2) {
@@ -451,9 +451,9 @@ int DivPlatformLynx::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_MIKEY));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_MIKEY));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/mmc5.cpp

@@ -229,7 +229,7 @@ int DivPlatformMMC5::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_STD));
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       rWrite(0x5000+c.chan*4,0x30|chan[c.chan].vol|((chan[c.chan].duty&3)<<6));
@@ -313,9 +313,9 @@ int DivPlatformMMC5::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_STD));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_STD));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/msm5232.cpp

@@ -157,7 +157,7 @@ void DivPlatformMSM5232::tick(bool sysTick) {
     if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
       //DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_PCE);
       chan[i].freq=chan[i].baseFreq+chan[i].pitch+chan[i].pitch2-(12<<7);
-      if (!parent->song.oldArpStrategy) {
+      if (!parent->song.compatFlags.oldArpStrategy) {
         if (chan[i].fixedArp) {
           chan[i].freq=(chan[i].baseNoteOverride<<7)+(chan[i].pitch)-(12<<7);
         } else {
@@ -206,7 +206,7 @@ int DivPlatformMSM5232::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       chan[c.chan].insChanged=false;
@@ -249,13 +249,13 @@ int DivPlatformMSM5232::dispatch(DivCommand c) {
       int destFreq=NOTE_LINEAR(c.value2);
       bool return2=false;
       if (destFreq>chan[c.chan].baseFreq) {
-        chan[c.chan].baseFreq+=c.value*parent->song.pitchSlideSpeed;
+        chan[c.chan].baseFreq+=c.value*parent->song.compatFlags.pitchSlideSpeed;
         if (chan[c.chan].baseFreq>=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
         }
       } else {
-        chan[c.chan].baseFreq-=c.value*parent->song.pitchSlideSpeed;
+        chan[c.chan].baseFreq-=c.value*parent->song.compatFlags.pitchSlideSpeed;
         if (chan[c.chan].baseFreq<=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
@@ -291,9 +291,9 @@ int DivPlatformMSM5232::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_LINEAR(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_LINEAR(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/msm6258.cpp

@@ -101,7 +101,7 @@ void DivPlatformMSM6258::acquire(short** buf, size_t len) {
 
 void DivPlatformMSM6258::tick(bool sysTick) {
   for (int i=0; i<1; i++) {
-    if (!parent->song.disableSampleMacro) {
+    if (!parent->song.compatFlags.disableSampleMacro) {
       chan[i].std.next();
       if (chan[i].std.duty.had) {
         if (rateSel!=(chan[i].std.duty.val&3)) {

src/engine/platform/msm6295.cpp

@@ -122,7 +122,7 @@ void DivPlatformMSM6295::acquire(short** buf, size_t len) {
 
 void DivPlatformMSM6295::tick(bool sysTick) {
   for (int i=0; i<4; i++) {
-    if (!parent->song.disableSampleMacro) {
+    if (!parent->song.compatFlags.disableSampleMacro) {
       chan[i].std.next();
       if (chan[i].std.vol.had) {
         chan[i].outVol=VOL_SCALE_LOG_BROKEN(chan[i].std.vol.val,chan[i].vol,8);

src/engine/platform/multipcm.cpp

@@ -389,9 +389,9 @@ int DivPlatformMultiPCM::dispatch(DivCommand c) {
       return 127;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_MULTIPCM));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_MULTIPCM));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
         chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       }
       chan[c.chan].inPorta=c.value;

src/engine/platform/n163.cpp

@@ -386,13 +386,13 @@ int DivPlatformN163::dispatch(DivCommand c) {
       int destFreq=destFreqD;
       bool return2=false;
       if (destFreq>chan[c.chan].baseFreq) {
-        chan[c.chan].baseFreq+=c.value*((parent->song.linearPitch)?1:16);
+        chan[c.chan].baseFreq+=c.value*((parent->song.compatFlags.linearPitch)?1:16);
         if (chan[c.chan].baseFreq>=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
         }
       } else {
-        chan[c.chan].baseFreq-=c.value*((parent->song.linearPitch)?1:16);
+        chan[c.chan].baseFreq-=c.value*((parent->song.compatFlags.linearPitch)?1:16);
         if (chan[c.chan].baseFreq<=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
@@ -456,12 +456,12 @@ int DivPlatformN163::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) {
+        if (parent->song.compatFlags.resetMacroOnPorta) {
           chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_N163));
           chan[c.chan].keyOn=true;
         }
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/namcowsg.cpp

@@ -353,7 +353,7 @@ int DivPlatformNamcoWSG::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (chan[c.chan].wave<0) {
@@ -406,13 +406,13 @@ int DivPlatformNamcoWSG::dispatch(DivCommand c) {
       int destFreq=NOTE_FREQUENCY(c.value2);
       bool return2=false;
       if (destFreq>chan[c.chan].baseFreq) {
-        chan[c.chan].baseFreq+=c.value*((parent->song.linearPitch)?1:8);
+        chan[c.chan].baseFreq+=c.value*((parent->song.compatFlags.linearPitch)?1:8);
         if (chan[c.chan].baseFreq>=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
         }
       } else {
-        chan[c.chan].baseFreq-=c.value*((parent->song.linearPitch)?1:8);
+        chan[c.chan].baseFreq-=c.value*((parent->song.compatFlags.linearPitch)?1:8);
         if (chan[c.chan].baseFreq<=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
@@ -440,9 +440,9 @@ int DivPlatformNamcoWSG::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/nds.cpp

@@ -334,7 +334,7 @@ int DivPlatformNDS::dispatch(DivCommand c) {
       chan[c.chan].busy=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -422,9 +422,9 @@ int DivPlatformNDS::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_NDS));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_NDS));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/nes.cpp

@@ -326,7 +326,7 @@ void DivPlatformNES::tick(bool sysTick) {
     if (chan[i].std.duty.had) {
       chan[i].duty=chan[i].std.duty.val;
       if (i==3) {
-        if (parent->song.properNoiseLayout) {
+        if (parent->song.compatFlags.properNoiseLayout) {
           chan[i].duty&=1;
         } else if (chan[i].duty>1) {
           chan[i].duty=1;
@@ -372,7 +372,7 @@ void DivPlatformNES::tick(bool sysTick) {
         ntPos+=chan[i].pitch2;
         if (isE) {
           chan[i].freq=31-(ntPos&31);
-        } else if (parent->song.properNoiseLayout) {
+        } else if (parent->song.compatFlags.properNoiseLayout) {
           chan[i].freq=15-(ntPos&15);
         } else {
           if (ntPos<0) ntPos=0;
@@ -578,12 +578,12 @@ int DivPlatformNES::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_NES));
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (c.chan==2) {
         rWrite(0x4000+c.chan*4,linearCount);
-      } else if (!parent->song.brokenOutVol2) {
+      } else if (!parent->song.compatFlags.brokenOutVol2) {
         rWrite(0x4000+c.chan*4,(chan[c.chan].envMode<<4)|chan[c.chan].vol|((chan[c.chan].duty&3)<<6));
       }
       if (resetSweep && c.chan<2) {
@@ -752,9 +752,9 @@ int DivPlatformNES::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_NES));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_NES));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/opl.cpp

@@ -1515,7 +1515,7 @@ void DivPlatformOPL::tick(bool sysTick) {
       if (chan[i].freqChanged) {
         int mul=2;
         int fixedBlock=chan[i].state.block;
-        if (!parent->song.linearPitch) {
+        if (!parent->song.compatFlags.linearPitch) {
           mul=octave(chan[i].baseFreq,fixedBlock)*2;
         }
         chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,mul,chan[i].pitch2,chipClock,CHIP_FREQBASE);
@@ -2082,7 +2082,7 @@ int DivPlatformOPL::dispatch(DivCommand c) {
       bool return2=false;
       int mul=1;
       int fixedBlock=0;
-      if (!parent->song.linearPitch) {
+      if (!parent->song.compatFlags.linearPitch) {
         fixedBlock=chan[c.chan].state.block;
         mul=octave(chan[c.chan].baseFreq,fixedBlock);
       }
@@ -2099,7 +2099,7 @@ int DivPlatformOPL::dispatch(DivCommand c) {
           return2=true;
         }
       }
-      if (!chan[c.chan].portaPause && !parent->song.linearPitch) {
+      if (!chan[c.chan].portaPause && !parent->song.compatFlags.linearPitch) {
         if (mul!=octave(newFreq,fixedBlock)) {
           chan[c.chan].portaPause=true;
           break;
@@ -2583,9 +2583,9 @@ int DivPlatformOPL::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (PCM_CHECK(c.chan) && chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_MULTIPCM));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_MULTIPCM));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
         chan[c.chan].baseFreq=(PCM_CHECK(c.chan))?NOTE_PCM(chan[c.chan].note):
           ((c.chan==adpcmChan)?(NOTE_ADPCMB(chan[c.chan].note)):(NOTE_FREQUENCY(chan[c.chan].note)));
       }

src/engine/platform/opll.cpp

@@ -341,7 +341,7 @@ void DivPlatformOPLL::tick(bool sysTick) {
     if (chan[i].freqChanged) {
       int mul=2;
       int fixedBlock=chan[i].state.block;
-      if (!parent->song.linearPitch) {
+      if (!parent->song.compatFlags.linearPitch) {
         mul=octave(chan[i].baseFreq,fixedBlock)*2;
       }
       chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,mul,chan[i].pitch2,chipClock,CHIP_FREQBASE);
@@ -684,7 +684,7 @@ int DivPlatformOPLL::dispatch(DivCommand c) {
       bool return2=false;
       int mul=1;
       int fixedBlock=0;
-      if (!parent->song.linearPitch) {
+      if (!parent->song.compatFlags.linearPitch) {
         fixedBlock=chan[c.chan].state.block;
         mul=octave(chan[c.chan].baseFreq,fixedBlock);
       }
@@ -956,7 +956,7 @@ int DivPlatformOPLL::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (c.chan>=9 && !properDrums) return 0;
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_PRE_NOTE:

src/engine/platform/pce.cpp

@@ -103,7 +103,7 @@ void DivPlatformPCE::acquireDirect(blip_buffer_t** bb, size_t len) {
           signed char dacData=((signed char)((unsigned char)s->data8[chan[i].dacPos]^0x80))>>3;
           chan[i].dacOut=CLAMP(dacData,-16,15);
           if (!isMuted[i]) {
-            chWrite(i,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[i].outVol));
+            chWrite(i,0x04,parent->song.compatFlags.disableSampleMacro?0xdf:(0xc0|chan[i].outVol));
             chWrite(i,0x06,chan[i].dacOut&0x1f);
           } else {
             chWrite(i,0x04,0xc0);
@@ -233,7 +233,7 @@ void DivPlatformPCE::tick(bool sysTick) {
             chan[i].dacPos=0;
           }
           chan[i].dacPeriod=0;
-          chWrite(i,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[i].vol));
+          chWrite(i,0x04,parent->song.compatFlags.disableSampleMacro?0xdf:(0xc0|chan[i].vol));
           addWrite(0xffff0000+(i<<8),chan[i].dacSample);
           chan[i].keyOn=true;
         }
@@ -269,11 +269,11 @@ void DivPlatformPCE::tick(bool sysTick) {
 
       if (i>=4) {
         int noiseSeek=(chan[i].fixedArp?chan[i].baseNoteOverride:(chan[i].note+chan[i].arpOff))+chan[i].pitch2;
-        if (!parent->song.properNoiseLayout && noiseSeek<0) noiseSeek=0;
+        if (!parent->song.compatFlags.properNoiseLayout && noiseSeek<0) noiseSeek=0;
         if (!NEW_ARP_STRAT) {
           noiseSeek=chan[i].noiseSeek;
         }
-        chWrite(i,0x07,chan[i].noise?(0x80|(parent->song.properNoiseLayout?(noiseSeek&31):noiseFreq[noiseSeek%12])):0);
+        chWrite(i,0x07,chan[i].noise?(0x80|(parent->song.compatFlags.properNoiseLayout?(noiseSeek&31):noiseFreq[noiseSeek%12])):0);
       }
       if (chan[i].keyOn) {
         //rWrite(16+i*5,0x80);
@@ -324,7 +324,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
           break;
         } else {
            if (dumpWrites) {
-             chWrite(c.chan,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[c.chan].vol));
+             chWrite(c.chan,0x04,parent->song.compatFlags.disableSampleMacro?0xdf:(0xc0|chan[c.chan].vol));
              addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dacSample);
            }
         }
@@ -341,7 +341,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
         }
         chan[c.chan].active=true;
         chan[c.chan].macroInit(ins);
-        if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+        if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
           chan[c.chan].outVol=chan[c.chan].vol;
         }
         break;
@@ -359,7 +359,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
       chan[c.chan].keyOn=true;
       chWrite(c.chan,0x04,0x80|chan[c.chan].vol);
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (chan[c.chan].wave<0) {
@@ -476,9 +476,9 @@ int DivPlatformPCE::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:
@@ -503,7 +503,7 @@ void DivPlatformPCE::muteChannel(int ch, bool mute) {
   isMuted[ch]=mute;
   chWrite(ch,0x05,isMuted[ch]?0:chan[ch].pan);
   if (!isMuted[ch] && (chan[ch].pcm && chan[ch].dacSample!=-1)) {
-    chWrite(ch,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[ch].outVol));
+    chWrite(ch,0x04,parent->song.compatFlags.disableSampleMacro?0xdf:(0xc0|chan[ch].outVol));
     chWrite(ch,0x06,chan[ch].dacOut&0x1f);
   }
 }

src/engine/platform/pcmdac.cpp

@@ -365,7 +365,7 @@ int DivPlatformPCMDAC::dispatch(DivCommand c) {
       chan[0].active=true;
       chan[0].keyOn=true;
       chan[0].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[0].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[0].std.vol.will) {
         chan[0].envVol=64;
       }
       if (chan[0].useWave) {
@@ -446,7 +446,7 @@ int DivPlatformPCMDAC::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[0].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[0].macroInit(parent->getIns(chan[0].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[0].macroInit(parent->getIns(chan[0].ins,DIV_INS_AMIGA));
       }
       chan[0].inPorta=c.value;
       break;

src/engine/platform/pcspkr.cpp

@@ -470,7 +470,7 @@ int DivPlatformPCSpeaker::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -537,9 +537,9 @@ int DivPlatformPCSpeaker::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/pet.cpp

@@ -158,7 +158,7 @@ int DivPlatformPET::dispatch(DivCommand c) {
       chan[0].active=true;
       chan[0].keyOn=true;
       chan[0].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[0].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[0].std.vol.will) {
         chan[0].outVol=chan[0].vol;
       }
       break;
@@ -227,9 +227,9 @@ int DivPlatformPET::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[0].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[0].macroInit(parent->getIns(chan[0].ins,DIV_INS_PET));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[0].macroInit(parent->getIns(chan[0].ins,DIV_INS_PET));
       }
-      if (!chan[0].inPorta && c.value && !parent->song.brokenPortaArp && chan[0].std.arp.will && !NEW_ARP_STRAT) chan[0].baseFreq=NOTE_PERIODIC(chan[0].note);
+      if (!chan[0].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[0].std.arp.will && !NEW_ARP_STRAT) chan[0].baseFreq=NOTE_PERIODIC(chan[0].note);
       chan[0].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/pokemini.cpp

@@ -175,7 +175,7 @@ int DivPlatformPokeMini::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_POKEMINI));
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -241,9 +241,9 @@ int DivPlatformPokeMini::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_POKEMINI));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_POKEMINI));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/pokey.cpp

@@ -184,7 +184,7 @@ void DivPlatformPOKEY::tick(bool sysTick) {
 
   for (int i=0; i<4; i++) {
     if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
-      chan[i].freq=parent->calcFreq(chan[i].baseFreq,parent->song.linearPitch?chan[i].pitch:0,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,true,0,parent->song.linearPitch?chan[i].pitch2:0,chipClock,CHIP_DIVIDER);
+      chan[i].freq=parent->calcFreq(chan[i].baseFreq,parent->song.compatFlags.linearPitch?chan[i].pitch:0,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,true,0,parent->song.compatFlags.linearPitch?chan[i].pitch2:0,chipClock,CHIP_DIVIDER);
 
       if ((i==0 && !(audctl&64)) || (i==2 && !(audctl&32)) || i==1 || i==3) {
         chan[i].freq/=7;
@@ -223,7 +223,7 @@ void DivPlatformPOKEY::tick(bool sysTick) {
       }
 
       // non-linear pitch
-      if (!parent->song.linearPitch) {
+      if (!parent->song.compatFlags.linearPitch) {
         chan[i].freq-=chan[i].pitch;
       }
 
@@ -297,7 +297,7 @@ int DivPlatformPOKEY::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
         chan[c.chan].ctlChanged=true;
       }
@@ -383,9 +383,9 @@ int DivPlatformPOKEY::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_POKEY));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_POKEY));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/pong.cpp

@@ -101,7 +101,7 @@ int DivPlatformPong::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -168,9 +168,9 @@ int DivPlatformPong::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/powernoise.cpp

@@ -288,7 +288,7 @@ int DivPlatformPowerNoise::dispatch(DivCommand c) {
       }
       chan[c.chan].active=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       chan[c.chan].keyOn=true;
@@ -372,9 +372,9 @@ int DivPlatformPowerNoise::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA: {
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_POWERNOISE));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_POWERNOISE));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
         chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
       }
       chan[c.chan].inPorta=c.value;

src/engine/platform/pv1000.cpp

@@ -182,9 +182,9 @@ int DivPlatformPV1000::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PV1000));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PV1000));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/qsound.cpp

@@ -488,7 +488,7 @@ int DivPlatformQSound::dispatch(DivCommand c) {
       chan[c.chan].keyOn=true;
       chan[c.chan].keyOff=false;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
         if (chan[c.chan].isNewQSound) {
           chan[c.chan].resVol=(chan[c.chan].outVol*16383)/255;
@@ -594,9 +594,9 @@ int DivPlatformQSound::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=QS_NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=QS_NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/rf5c68.cpp

@@ -210,7 +210,7 @@ int DivPlatformRF5C68::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -284,9 +284,9 @@ int DivPlatformRF5C68::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/saa.cpp

@@ -211,7 +211,7 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (isMuted[c.chan]) {
@@ -261,13 +261,13 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
       int destFreq=NOTE_PERIODIC(c.value2);
       bool return2=false;
       if (destFreq>chan[c.chan].baseFreq) {
-        chan[c.chan].baseFreq+=c.value*((parent->song.linearPitch)?1:(8-chan[c.chan].freqH));
+        chan[c.chan].baseFreq+=c.value*((parent->song.compatFlags.linearPitch)?1:(8-chan[c.chan].freqH));
         if (chan[c.chan].baseFreq>=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
         }
       } else {
-        chan[c.chan].baseFreq-=c.value*((parent->song.linearPitch)?1:(8-chan[c.chan].freqH));
+        chan[c.chan].baseFreq-=c.value*((parent->song.compatFlags.linearPitch)?1:(8-chan[c.chan].freqH));
         if (chan[c.chan].baseFreq<=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
@@ -318,9 +318,9 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SAA1099));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SAA1099));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_PRE_NOTE:

src/engine/platform/scc.cpp

@@ -172,7 +172,7 @@ int DivPlatformSCC::dispatch(DivCommand c) {
       }
       chan[c.chan].active=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (!isMuted[c.chan]) {
@@ -253,9 +253,9 @@ int DivPlatformSCC::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SCC));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SCC));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/scvtone.cpp

@@ -100,7 +100,7 @@ void DivPlatformSCV::tick(bool sysTick) {
         } else {
           chan[i].freq=(chan[i].baseFreq+chan[i].pitch+chan[i].pitch2+143);
         }
-        if (!parent->song.oldArpStrategy) {
+        if (!parent->song.compatFlags.oldArpStrategy) {
           if (chan[i].fixedArp) {
             chan[i].freq=(chan[i].baseNoteOverride)+chan[i].pitch+chan[i].pitch2;
           } else {
@@ -186,7 +186,7 @@ int DivPlatformSCV::dispatch(DivCommand c) {
       chan[c.chan].keyOn=true;
       //chwrite(c.chan,0x04,0x80|chan[c.chan].vol);
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       chan[c.chan].insChanged=false;
@@ -267,9 +267,9 @@ int DivPlatformSCV::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_UPD1771C));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_UPD1771C));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
         chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       }
       chan[c.chan].inPorta=c.value;

src/engine/platform/segapcm.cpp

@@ -66,7 +66,7 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
   for (int i=0; i<16; i++) {
     chan[i].std.next();
 
-    if (parent->song.newSegaPCM) {
+    if (parent->song.compatFlags.newSegaPCM) {
       if (chan[i].std.vol.had) {
         chan[i].outVol=(chan[i].vol*MIN(chan[i].macroVolMul,chan[i].std.vol.val))/chan[i].macroVolMul;
         chan[i].chVolL=(chan[i].outVol*chan[i].chPanL)/127;
@@ -89,13 +89,13 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
       chan[i].pcm.freq=-1;
     }
 
-    if (parent->song.newSegaPCM) if (chan[i].std.panL.had) {
+    if (parent->song.compatFlags.newSegaPCM) if (chan[i].std.panL.had) {
       chan[i].chPanL=chan[i].std.panL.val&127;
       chan[i].chVolL=(chan[i].outVol*chan[i].chPanL)/127;
       rWrite(2+(i<<3),chan[i].chVolL);
     }
 
-    if (parent->song.newSegaPCM) if (chan[i].std.panR.had) {
+    if (parent->song.compatFlags.newSegaPCM) if (chan[i].std.panR.had) {
       chan[i].chPanR=chan[i].std.panR.val&127;
       chan[i].chVolR=(chan[i].outVol*chan[i].chPanR)/127;
       rWrite(3+(i<<3),chan[i].chVolR);
@@ -120,7 +120,7 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
 
     if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
       chan[i].freq=chan[i].baseFreq+(chan[i].pitch)-128+(oldSlides?0:chan[i].pitch2);
-      if (!parent->song.oldArpStrategy) {
+      if (!parent->song.compatFlags.oldArpStrategy) {
         if (chan[i].fixedArp) {
           chan[i].freq=(chan[i].baseNoteOverride<<7)+chan[i].pitch-128+(chan[i].pitch2<<(oldSlides?1:0));
         } else {
@@ -204,10 +204,10 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
         chan[c.chan].pcm.freq=-1;
       }
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
 
-        if (parent->song.newSegaPCM) {
+        if (parent->song.compatFlags.newSegaPCM) {
           chan[c.chan].chVolL=(chan[c.chan].outVol*chan[c.chan].chPanL)/127;
           chan[c.chan].chVolR=(chan[c.chan].outVol*chan[c.chan].chPanR)/127;
           rWrite(2+(c.chan<<3),chan[c.chan].chVolL);
@@ -240,7 +240,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
       if (!chan[c.chan].std.vol.has) {
         chan[c.chan].outVol=c.value;
       }
-      if (parent->song.newSegaPCM) {
+      if (parent->song.compatFlags.newSegaPCM) {
         chan[c.chan].chVolL=(c.value*chan[c.chan].chPanL)/127;
         chan[c.chan].chVolR=(c.value*chan[c.chan].chPanR)/127;
       } else {
@@ -262,7 +262,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
       chan[c.chan].ins=c.value;
       break;
     case DIV_CMD_PANNING: {
-      if (parent->song.newSegaPCM) {
+      if (parent->song.compatFlags.newSegaPCM) {
         chan[c.chan].chPanL=c.value>>1;
         chan[c.chan].chPanR=c.value2>>1;
         chan[c.chan].chVolL=(chan[c.chan].outVol*chan[c.chan].chPanL)/127;
@@ -284,7 +284,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
     case DIV_CMD_NOTE_PORTA: {
       int destFreq=((c.value2+chan[c.chan].sampleNoteDelta)<<7);
       int newFreq;
-      int mul=(oldSlides || !parent->song.linearPitch)?8:1;
+      int mul=(oldSlides || !parent->song.compatFlags.linearPitch)?8:1;
       bool return2=false;
       if (destFreq>chan[c.chan].baseFreq) {
         newFreq=chan[c.chan].baseFreq+c.value*mul;
@@ -334,7 +334,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
       return 127;
       break;
     case DIV_CMD_PRE_PORTA:
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=(chan[c.chan].note<<7);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=(chan[c.chan].note<<7);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_PRE_NOTE:

src/engine/platform/sid2.cpp

@@ -445,12 +445,12 @@ int DivPlatformSID2::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta || parent->song.preNoteNoEffect) {
+        if (parent->song.compatFlags.resetMacroOnPorta || parent->song.compatFlags.preNoteNoEffect) {
           chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SID2));
           chan[c.chan].keyOn=true;
         }
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/sid3.cpp

@@ -845,7 +845,7 @@ int DivPlatformSID3::dispatch(DivCommand c) {
           }
           chan[c.chan].active=true;
           chan[c.chan].macroInit(ins);
-          if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+          if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
             chan[c.chan].outVol=chan[c.chan].vol;
           }
           //chan[c.chan].keyOn=true;
@@ -997,12 +997,12 @@ int DivPlatformSID3::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta || parent->song.preNoteNoEffect) {
+        if (parent->song.compatFlags.resetMacroOnPorta || parent->song.compatFlags.preNoteNoEffect) {
           chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SID3));
           chan[c.chan].keyOn=true;
         }
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_PANNING: {

src/engine/platform/sm8521.cpp

@@ -208,7 +208,7 @@ int DivPlatformSM8521::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (chan[c.chan].wave<0) {
@@ -267,13 +267,13 @@ int DivPlatformSM8521::dispatch(DivCommand c) {
       int destFreq=NOTE_PERIODIC(c.value2);
       bool return2=false;
       if (destFreq>chan[c.chan].baseFreq) {
-        chan[c.chan].baseFreq+=c.value*((parent->song.linearPitch)?1:8);
+        chan[c.chan].baseFreq+=c.value*((parent->song.compatFlags.linearPitch)?1:8);
         if (chan[c.chan].baseFreq>=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
         }
       } else {
-        chan[c.chan].baseFreq-=c.value*((parent->song.linearPitch)?1:8);
+        chan[c.chan].baseFreq-=c.value*((parent->song.compatFlags.linearPitch)?1:8);
         if (chan[c.chan].baseFreq<=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
@@ -293,9 +293,9 @@ int DivPlatformSM8521::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SM8521));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SM8521));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/sms.cpp

@@ -190,7 +190,7 @@ void DivPlatformSMS::acquireDirect(blip_buffer_t** bb, size_t len) {
 double DivPlatformSMS::NOTE_SN(int ch, int note) {
   double CHIP_DIVIDER=toneDivider;
   if (ch==3) CHIP_DIVIDER=noiseDivider;
-  if (parent->song.linearPitch || !easyNoise) {
+  if (parent->song.compatFlags.linearPitch || !easyNoise) {
     return NOTE_PERIODIC(note);
   }
   int easyStartingPeriod=16;
@@ -210,7 +210,7 @@ int DivPlatformSMS::snCalcFreq(int ch) {
   if (chan[ch].fixedArp) {
     curFreq=chan[ch].baseNoteOverride<<7;
   }
-  if (parent->song.linearPitch && easyNoise && curFreq>easyThreshold) {
+  if (parent->song.compatFlags.linearPitch && easyNoise && curFreq>easyThreshold) {
     int ret=(((easyStartingPeriod<<7))-(curFreq-(easyThreshold)))>>7;
     if (ret<0) ret=0;
     return ret;
@@ -242,7 +242,7 @@ void DivPlatformSMS::tick(bool sysTick) {
     }
     if (i==3) {
       if (chan[i].std.duty.had) {
-        if (chan[i].std.duty.val!=snNoiseMode || parent->song.snDutyReset) {
+        if (chan[i].std.duty.val!=snNoiseMode || parent->song.compatFlags.snDutyReset) {
           snNoiseMode=chan[i].std.duty.val;
           if (chan[i].std.duty.val<2) {
             chan[3].freqChanged=false;
@@ -277,7 +277,7 @@ void DivPlatformSMS::tick(bool sysTick) {
     if (chan[i].freqChanged) {
       chan[i].freq=snCalcFreq(i);
       if (chan[i].freq>1023) chan[i].freq=1023;
-      if (parent->song.snNoLowPeriods) {
+      if (parent->song.compatFlags.snNoLowPeriods) {
         if (chan[i].freq<8) chan[i].freq=1;
       } else {
         if (chan[i].freq<0) chan[i].freq=0;
@@ -297,7 +297,7 @@ void DivPlatformSMS::tick(bool sysTick) {
     chan[3].freq=snCalcFreq(3);
     //parent->calcFreq(chan[3].baseFreq,chan[3].pitch,chan[3].fixedArp?chan[3].baseNoteOverride:chan[3].arpOff,chan[3].fixedArp,true,0,chan[3].pitch2,chipClock,noiseDivider);
     if (chan[3].freq>1023) chan[3].freq=1023;
-    if (parent->song.snNoLowPeriods) {
+    if (parent->song.compatFlags.snNoLowPeriods) {
       if (chan[3].actualNote>0x5d) chan[3].freq=0x01;
     }
     if (chan[3].freq<0) chan[3].freq=0;
@@ -359,13 +359,13 @@ int DivPlatformSMS::dispatch(DivCommand c) {
       }
       chan[c.chan].active=true;
       chan[c.chan].keyOff=false;
-      //if (!parent->song.brokenOutVol2) {
+      //if (!parent->song.compatFlags.brokenOutVol2) {
         chan[c.chan].writeVol=true;
         chan[c.chan].outVol=chan[c.chan].vol;
         //rWrite(0,0x90|c.chan<<5|(isMuted[c.chan]?15:(15-(chan[c.chan].vol&15))));
       //}
       chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_STD));
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -451,9 +451,9 @@ int DivPlatformSMS::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_STD));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_STD));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_SN(c.chan,chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_SN(c.chan,chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/snes.cpp

@@ -390,7 +390,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
       // this is the fix. it needs testing.
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         if (chan[c.chan].outVol!=chan[c.chan].vol) chan[c.chan].shallWriteVol=true;
         chan[c.chan].outVol=chan[c.chan].vol;
       }
@@ -482,7 +482,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SNES));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SNES));
       }
       chan[c.chan].inPorta=c.value;
       break;

src/engine/platform/su.cpp

@@ -327,7 +327,7 @@ int DivPlatformSoundUnit::dispatch(DivCommand c) {
       chan[c.chan].hwSeqDelay=0;
       chWrite(c.chan,0x02,chan[c.chan].vol);
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       chan[c.chan].insChanged=false;
@@ -484,13 +484,13 @@ int DivPlatformSoundUnit::dispatch(DivCommand c) {
       int destFreq=NOTE_SU(c.chan,c.value2+chan[c.chan].sampleNoteDelta);
       bool return2=false;
       if (destFreq>chan[c.chan].baseFreq) {
-        chan[c.chan].baseFreq+=c.value*((parent->song.linearPitch)?1:(1+(chan[c.chan].baseFreq>>9)));
+        chan[c.chan].baseFreq+=c.value*((parent->song.compatFlags.linearPitch)?1:(1+(chan[c.chan].baseFreq>>9)));
         if (chan[c.chan].baseFreq>=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
         }
       } else {
-        chan[c.chan].baseFreq-=c.value*((parent->song.linearPitch)?1:(1+(chan[c.chan].baseFreq>>9)));
+        chan[c.chan].baseFreq-=c.value*((parent->song.compatFlags.linearPitch)?1:(1+(chan[c.chan].baseFreq>>9)));
         if (chan[c.chan].baseFreq<=destFreq) {
           chan[c.chan].baseFreq=destFreq;
           return2=true;
@@ -519,9 +519,9 @@ int DivPlatformSoundUnit::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SU));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SU));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_SU(c.chan,chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_SU(c.chan,chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_C64_PW_SLIDE:

src/engine/platform/supervision.cpp

@@ -297,7 +297,7 @@ int DivPlatformSupervision::dispatch(DivCommand c) {
       chan[c.chan].keyOn=true;
       //chwrite(c.chan,0x04,0x80|chan[c.chan].vol);
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       chan[c.chan].insChanged=false;
@@ -384,9 +384,9 @@ int DivPlatformSupervision::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SUPERVISION));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SUPERVISION));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/swan.cpp

@@ -405,7 +405,7 @@ int DivPlatformSwan::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (chan[c.chan].wave<0) {
@@ -538,9 +538,9 @@ int DivPlatformSwan::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SWAN));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SWAN));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/t6w28.cpp

@@ -95,7 +95,7 @@ void DivPlatformT6W28::writeOutVol(int ch) {
 double DivPlatformT6W28::NOTE_SN(int ch, int note) {
   double CHIP_DIVIDER=16;
   if (ch==3) CHIP_DIVIDER=15;
-  if (parent->song.linearPitch || !easyNoise) {
+  if (parent->song.compatFlags.linearPitch || !easyNoise) {
     return NOTE_PERIODIC(note);
   }
   if (note>107) {
@@ -105,7 +105,7 @@ double DivPlatformT6W28::NOTE_SN(int ch, int note) {
 }
 
 int DivPlatformT6W28::snCalcFreq(int ch) {
-  if (parent->song.linearPitch && easyNoise && chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2>(107<<7)) {
+  if (parent->song.compatFlags.linearPitch && easyNoise && chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2>(107<<7)) {
     int ret=(((13<<7)+0x40)-(chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2-(107<<7)))>>7;
     if (ret<0) ret=0;
     return ret;
@@ -187,7 +187,7 @@ int DivPlatformT6W28::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
         writeOutVol(c.chan);
       }
@@ -270,9 +270,9 @@ int DivPlatformT6W28::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_T6W28));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_T6W28));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_SN(c.chan,chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_SN(c.chan,chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/ted.cpp

@@ -149,7 +149,7 @@ int DivPlatformTED::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       chan[c.chan].insChanged=false;
@@ -230,9 +230,9 @@ int DivPlatformTED::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_TED));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_TED));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/tia.cpp

@@ -295,7 +295,7 @@ int DivPlatformTIA::dispatch(DivCommand c) {
       chan[c.chan].keyOn=true;
       rWrite(0x15+c.chan,chan[c.chan].shape);
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (chan[c.chan].insChanged) {
@@ -395,7 +395,7 @@ int DivPlatformTIA::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_TIA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_TIA));
       }
       chan[c.chan].inPorta=c.value;
       break;

src/engine/platform/tx81z.cpp

@@ -229,7 +229,7 @@ void DivPlatformTX81Z::tick(bool sysTick) {
     if (chan[i].std.alg.had) {
       chan[i].state.alg=chan[i].std.alg.val;
       immWrite(chanOffs[i]+ADDR_LR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3)|(chan[i].active?0x40:0)|(chan[i].chVolR<<7));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
         if (isMuted[i] || !op.enable) {
@@ -321,7 +321,7 @@ void DivPlatformTX81Z::tick(bool sysTick) {
       }
 
       // fixed pitch
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         bool freqChangeOp=false;
 
         if (op.egt) {
@@ -416,7 +416,7 @@ void DivPlatformTX81Z::tick(bool sysTick) {
   for (int i=0; i<8; i++) {
     if (chan[i].freqChanged) {
       chan[i].freq=chan[i].baseFreq+chan[i].pitch-128+chan[i].pitch2;
-      if (!parent->song.oldArpStrategy) {
+      if (!parent->song.compatFlags.oldArpStrategy) {
         if (chan[i].fixedArp) {
           chan[i].freq=(chan[i].baseNoteOverride<<7)+chan[i].pitch-128+chan[i].pitch2;
         } else {
@@ -1006,7 +1006,7 @@ int DivPlatformTX81Z::dispatch(DivCommand c) {
       return 127;
       break;
     case DIV_CMD_PRE_PORTA:
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_LINEAR(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_LINEAR(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_PRE_NOTE:

src/engine/platform/vb.cpp

@@ -297,7 +297,7 @@ int DivPlatformVB::dispatch(DivCommand c) {
         }
         chWrite(4,0x00,0x80);
       }
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
         writeEnv(c.chan);
       }
@@ -445,9 +445,9 @@ int DivPlatformVB::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/vera.cpp

@@ -347,7 +347,7 @@ int DivPlatformVERA::dispatch(DivCommand c) {
       }
       chan[c.chan].active=true;
       chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_VERA));
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -421,7 +421,7 @@ int DivPlatformVERA::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_VERA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_VERA));
       }
       if (!chan[c.chan].inPorta && c.value && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=calcNoteFreq(c.chan,chan[c.chan].note);
       chan[c.chan].inPorta=c.value;

src/engine/platform/vic20.cpp

@@ -247,9 +247,9 @@ int DivPlatformVIC20::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_VIC));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_VIC));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/vrc6.cpp

@@ -297,7 +297,7 @@ int DivPlatformVRC6::dispatch(DivCommand c) {
             }
             chan[c.chan].active=true;
             chan[c.chan].macroInit(ins);
-            if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+            if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
               chan[c.chan].outVol=chan[c.chan].vol;
             }
             //chan[c.chan].keyOn=true;
@@ -418,9 +418,9 @@ int DivPlatformVRC6::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_VRC6));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_VRC6));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/x1_010.cpp

@@ -614,7 +614,7 @@ int DivPlatformX1_010::dispatch(DivCommand c) {
       chan[c.chan].keyOn=true;
       chan[c.chan].envChanged=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       if (chan[c.chan].wave<0) {
@@ -729,9 +729,9 @@ int DivPlatformX1_010::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_X1_010));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_X1_010));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NoteX1_010(c.chan,chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NoteX1_010(c.chan,chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_FREQ:

src/engine/platform/ym2203.cpp

@@ -551,7 +551,7 @@ void DivPlatformYM2203::tick(bool sysTick) {
     if (chan[i].std.alg.had) {
       chan[i].state.alg=chan[i].std.alg.val;
       rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
         if (isMuted[i] || !op.enable) {
@@ -661,7 +661,7 @@ void DivPlatformYM2203::tick(bool sysTick) {
   for (int i=0; i<3; i++) {
     if (i==2 && extMode) continue;
     if (chan[i].freqChanged) {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,4,chan[i].pitch2,chipClock,CHIP_FREQBASE,11,chan[i].state.block);
       } else {
         int fNum=parent->calcFreq(chan[i].baseFreq&0x7ff,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,4,chan[i].pitch2);
@@ -797,7 +797,7 @@ int DivPlatformYM2203::dispatch(DivCommand c) {
       chan[c.chan].keyOff=true;
       chan[c.chan].keyOn=false;
       chan[c.chan].active=false;
-      if (parent->song.brokenFMOff) chan[c.chan].macroInit(NULL); 
+      if (parent->song.compatFlags.brokenFMOff) chan[c.chan].macroInit(NULL); 
       break;
     case DIV_CMD_NOTE_OFF_ENV:
       chan[c.chan].keyOff=true;
@@ -867,7 +867,7 @@ int DivPlatformYM2203::dispatch(DivCommand c) {
         }
         break;
       }
-      if (c.chan>(psgChanOffs-1) || parent->song.linearPitch) { // PSG
+      if (c.chan>(psgChanOffs-1) || parent->song.compatFlags.linearPitch) { // PSG
         int destFreq=NOTE_FNUM_BLOCK(c.value2,11,chan[c.chan].state.block);
         bool return2=false;
         if (destFreq>chan[c.chan].baseFreq) {
@@ -1156,7 +1156,7 @@ int DivPlatformYM2203::dispatch(DivCommand c) {
     case DIV_CMD_PRE_PORTA:
       if (c.chan>(2+isCSM)) {
         if (chan[c.chan].active && c.value2) {
-          if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_FM));
+          if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_FM));
         }
       }
       chan[c.chan].inPorta=c.value;

src/engine/platform/ym2203ext.cpp

@@ -146,7 +146,7 @@ int DivPlatformYM2203Ext::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_NOTE_PORTA: {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         int destFreq=NOTE_FREQUENCY(c.value2);
         bool return2=false;
         if (destFreq>opChan[ch].baseFreq) {
@@ -472,7 +472,7 @@ void DivPlatformYM2203Ext::tick(bool sysTick) {
     if (opChan[i].std.alg.had) {
       chan[extChanOffs].state.alg=opChan[i].std.alg.val;
       rWrite(chanOffs[extChanOffs]+ADDR_FB_ALG,(chan[extChanOffs].state.alg&7)|(chan[extChanOffs].state.fb<<3));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[j];
         if (isOpMuted[j] || !op.enable) {
@@ -551,7 +551,7 @@ void DivPlatformYM2203Ext::tick(bool sysTick) {
   unsigned char hardResetMask=0;
   if (extMode) for (int i=0; i<4; i++) {
     if (opChan[i].freqChanged) {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         opChan[i].freq=parent->calcFreq(opChan[i].baseFreq,opChan[i].pitch,opChan[i].fixedArp?opChan[i].baseNoteOverride:opChan[i].arpOff,opChan[i].fixedArp,false,4,opChan[i].pitch2,chipClock,CHIP_FREQBASE,11,chan[extChanOffs].state.block);
       } else {
         int fNum=parent->calcFreq(opChan[i].baseFreq&0x7ff,opChan[i].pitch,opChan[i].fixedArp?opChan[i].baseNoteOverride:opChan[i].arpOff,opChan[i].fixedArp,false,4,opChan[i].pitch2);

src/engine/platform/ym2608.cpp

@@ -794,7 +794,7 @@ void DivPlatformYM2608::tick(bool sysTick) {
     if (chan[i].std.alg.had) {
       chan[i].state.alg=chan[i].std.alg.val;
       rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
         if (isMuted[i] || !op.enable) {
@@ -916,7 +916,7 @@ void DivPlatformYM2608::tick(bool sysTick) {
   for (int i=0; i<6; i++) {
     if (i==2 && extMode) continue;
     if (chan[i].freqChanged) {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,4,chan[i].pitch2,chipClock,CHIP_FREQBASE,11,chan[i].state.block);
       } else {
         int fNum=parent->calcFreq(chan[i].baseFreq&0x7ff,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,4,chan[i].pitch2);
@@ -1238,7 +1238,7 @@ int DivPlatformYM2608::dispatch(DivCommand c) {
       chan[c.chan].keyOff=true;
       chan[c.chan].keyOn=false;
       chan[c.chan].active=false;
-      if (parent->song.brokenFMOff) chan[c.chan].macroInit(NULL);
+      if (parent->song.compatFlags.brokenFMOff) chan[c.chan].macroInit(NULL);
       break;
     case DIV_CMD_NOTE_OFF_ENV:
       chan[c.chan].keyOff=true;
@@ -1340,7 +1340,7 @@ int DivPlatformYM2608::dispatch(DivCommand c) {
         }
         break;
       }
-      if (c.chan>(5+isCSM) || parent->song.linearPitch) { // PSG, ADPCM-B
+      if (c.chan>(5+isCSM) || parent->song.compatFlags.linearPitch) { // PSG, ADPCM-B
         int destFreq=NOTE_OPNB(c.chan,c.value2+chan[c.chan].sampleNoteDelta);
         bool return2=false;
         if (destFreq>chan[c.chan].baseFreq) {
@@ -1651,7 +1651,7 @@ int DivPlatformYM2608::dispatch(DivCommand c) {
     case DIV_CMD_PRE_PORTA:
       if (c.chan>5) {
         if (chan[c.chan].active && c.value2) {
-          if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_FM));
+          if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_FM));
         }
       }
       chan[c.chan].inPorta=c.value;

src/engine/platform/ym2608ext.cpp

@@ -150,7 +150,7 @@ int DivPlatformYM2608Ext::dispatch(DivCommand c) {
       } else {
         opChan[ch].pan=(c.value2>0)|((c.value>0)<<1);
       }
-      if (parent->song.sharedExtStat) {
+      if (parent->song.compatFlags.sharedExtStat) {
         for (int i=0; i<4; i++) {
           if (ch==i) continue;
           opChan[i].pan=opChan[ch].pan;
@@ -166,7 +166,7 @@ int DivPlatformYM2608Ext::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_NOTE_PORTA: {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         int destFreq=NOTE_FREQUENCY(c.value2);
         bool return2=false;
         if (destFreq>opChan[ch].baseFreq) {
@@ -510,7 +510,7 @@ void DivPlatformYM2608Ext::tick(bool sysTick) {
     if (opChan[i].std.alg.had) {
       chan[extChanOffs].state.alg=opChan[i].std.alg.val;
       rWrite(chanOffs[extChanOffs]+ADDR_FB_ALG,(chan[extChanOffs].state.alg&7)|(chan[extChanOffs].state.fb<<3));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[j];
         if (isOpMuted[j] || !op.enable) {
@@ -541,7 +541,7 @@ void DivPlatformYM2608Ext::tick(bool sysTick) {
 
     if (opChan[i].std.panL.had) {
       opChan[i].pan=opChan[i].std.panL.val&3;
-      if (parent->song.sharedExtStat) {
+      if (parent->song.compatFlags.sharedExtStat) {
         for (int j=0; j<4; j++) {
           if (i==j) continue;
           opChan[j].pan=opChan[i].pan;
@@ -612,7 +612,7 @@ void DivPlatformYM2608Ext::tick(bool sysTick) {
   unsigned char hardResetMask=0;
   if (extMode) for (int i=0; i<4; i++) {
     if (opChan[i].freqChanged) {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         opChan[i].freq=parent->calcFreq(opChan[i].baseFreq,opChan[i].pitch,opChan[i].fixedArp?opChan[i].baseNoteOverride:opChan[i].arpOff,opChan[i].fixedArp,false,4,opChan[i].pitch2,chipClock,CHIP_FREQBASE,11,chan[extChanOffs].state.block);
       } else {
         int fNum=parent->calcFreq(opChan[i].baseFreq&0x7ff,opChan[i].pitch,opChan[i].fixedArp?opChan[i].baseNoteOverride:opChan[i].arpOff,opChan[i].fixedArp,false,4,opChan[i].pitch2);

src/engine/platform/ym2610.cpp

@@ -714,7 +714,7 @@ void DivPlatformYM2610::tick(bool sysTick) {
     if (chan[i].std.alg.had) {
       chan[i].state.alg=chan[i].std.alg.val;
       rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
         if (isMuted[i] || !op.enable) {
@@ -836,7 +836,7 @@ void DivPlatformYM2610::tick(bool sysTick) {
   for (int i=0; i<(psgChanOffs-isCSM); i++) {
     if (i==1 && extMode) continue;
     if (chan[i].freqChanged) {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,4,chan[i].pitch2,chipClock,CHIP_FREQBASE,11,chan[i].state.block);
       } else {
         int fNum=parent->calcFreq(chan[i].baseFreq&0x7ff,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,4,chan[i].pitch2,chipClock,CHIP_FREQBASE,11);
@@ -1178,7 +1178,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
       chan[c.chan].keyOff=true;
       chan[c.chan].keyOn=false;
       chan[c.chan].active=false;
-      if (parent->song.brokenFMOff) chan[c.chan].macroInit(NULL);
+      if (parent->song.compatFlags.brokenFMOff) chan[c.chan].macroInit(NULL);
       break;
     case DIV_CMD_NOTE_OFF_ENV:
       chan[c.chan].keyOff=true;
@@ -1280,7 +1280,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
         }
         break;
       }
-      if (c.chan>=psgChanOffs || parent->song.linearPitch) { // PSG, ADPCM-B
+      if (c.chan>=psgChanOffs || parent->song.compatFlags.linearPitch) { // PSG, ADPCM-B
         int destFreq=NOTE_OPNB(c.chan,c.value2+chan[c.chan].sampleNoteDelta);
         bool return2=false;
         if (destFreq>chan[c.chan].baseFreq) {
@@ -1591,7 +1591,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
     case DIV_CMD_PRE_PORTA:
       if (c.chan>=psgChanOffs) {
         if (chan[c.chan].active && c.value2) {
-          if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_FM));
+          if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_FM));
         }
       }
       chan[c.chan].inPorta=c.value;

src/engine/platform/ym2610b.cpp

@@ -783,7 +783,7 @@ void DivPlatformYM2610B::tick(bool sysTick) {
     if (chan[i].std.alg.had) {
       chan[i].state.alg=chan[i].std.alg.val;
       rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[i]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[i].state.op[j];
         if (isMuted[i] || !op.enable) {
@@ -905,7 +905,7 @@ void DivPlatformYM2610B::tick(bool sysTick) {
   for (int i=0; i<(psgChanOffs-isCSM); i++) {
     if (i==2 && extMode) continue;
     if (chan[i].freqChanged) {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,4,chan[i].pitch2,chipClock,CHIP_FREQBASE,11,chan[i].state.block);
       } else {
         int fNum=parent->calcFreq(chan[i].baseFreq&0x7ff,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,4,chan[i].pitch2);
@@ -1247,7 +1247,7 @@ int DivPlatformYM2610B::dispatch(DivCommand c) {
       chan[c.chan].keyOff=true;
       chan[c.chan].keyOn=false;
       chan[c.chan].active=false;
-      if (parent->song.brokenFMOff) chan[c.chan].macroInit(NULL);
+      if (parent->song.compatFlags.brokenFMOff) chan[c.chan].macroInit(NULL);
       break;
     case DIV_CMD_NOTE_OFF_ENV:
       chan[c.chan].keyOff=true;
@@ -1349,7 +1349,7 @@ int DivPlatformYM2610B::dispatch(DivCommand c) {
         }
         break;
       }
-      if (c.chan>=psgChanOffs || parent->song.linearPitch) { // PSG, ADPCM-B
+      if (c.chan>=psgChanOffs || parent->song.compatFlags.linearPitch) { // PSG, ADPCM-B
         int destFreq=NOTE_OPNB(c.chan,c.value2+chan[c.chan].sampleNoteDelta);
         bool return2=false;
         if (destFreq>chan[c.chan].baseFreq) {
@@ -1660,7 +1660,7 @@ int DivPlatformYM2610B::dispatch(DivCommand c) {
     case DIV_CMD_PRE_PORTA:
       if (c.chan>=psgChanOffs) {
         if (chan[c.chan].active && c.value2) {
-          if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_FM));
+          if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_FM));
         }
       }
       chan[c.chan].inPorta=c.value;

src/engine/platform/ym2610bext.cpp

@@ -146,7 +146,7 @@ int DivPlatformYM2610BExt::dispatch(DivCommand c) {
       } else {
         opChan[ch].pan=(c.value2>0)|((c.value>0)<<1);
       }
-      if (parent->song.sharedExtStat) {
+      if (parent->song.compatFlags.sharedExtStat) {
         for (int i=0; i<4; i++) {
           if (ch==i) continue;
           opChan[i].pan=opChan[ch].pan;
@@ -162,7 +162,7 @@ int DivPlatformYM2610BExt::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_NOTE_PORTA: {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         int destFreq=NOTE_FREQUENCY(c.value2);
         bool return2=false;
         if (destFreq>opChan[ch].baseFreq) {
@@ -503,7 +503,7 @@ void DivPlatformYM2610BExt::tick(bool sysTick) {
     if (opChan[i].std.alg.had) {
       chan[extChanOffs].state.alg=opChan[i].std.alg.val;
       rWrite(chanOffs[extChanOffs]+ADDR_FB_ALG,(chan[extChanOffs].state.alg&7)|(chan[extChanOffs].state.fb<<3));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[j];
         if (isOpMuted[j] || !op.enable) {
@@ -534,7 +534,7 @@ void DivPlatformYM2610BExt::tick(bool sysTick) {
 
     if (opChan[i].std.panL.had) {
       opChan[i].pan=opChan[i].std.panL.val&3;
-      if (parent->song.sharedExtStat) {
+      if (parent->song.compatFlags.sharedExtStat) {
         for (int j=0; j<4; j++) {
           if (i==j) continue;
           opChan[j].pan=opChan[i].pan;
@@ -604,7 +604,7 @@ void DivPlatformYM2610BExt::tick(bool sysTick) {
   unsigned char hardResetMask=0;
   if (extMode) for (int i=0; i<4; i++) {
     if (opChan[i].freqChanged) {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         opChan[i].freq=parent->calcFreq(opChan[i].baseFreq,opChan[i].pitch,opChan[i].fixedArp?opChan[i].baseNoteOverride:opChan[i].arpOff,opChan[i].fixedArp,false,4,opChan[i].pitch2,chipClock,CHIP_FREQBASE,11,chan[extChanOffs].state.block);
       } else {
         int fNum=parent->calcFreq(opChan[i].baseFreq&0x7ff,opChan[i].pitch,opChan[i].fixedArp?opChan[i].baseNoteOverride:opChan[i].arpOff,opChan[i].fixedArp,false,4,opChan[i].pitch2);

src/engine/platform/ym2610ext.cpp

@@ -146,7 +146,7 @@ int DivPlatformYM2610Ext::dispatch(DivCommand c) {
       } else {
         opChan[ch].pan=(c.value2>0)|((c.value>0)<<1);
       }
-      if (parent->song.sharedExtStat) {
+      if (parent->song.compatFlags.sharedExtStat) {
         for (int i=0; i<4; i++) {
           if (ch==i) continue;
           opChan[i].pan=opChan[ch].pan;
@@ -162,7 +162,7 @@ int DivPlatformYM2610Ext::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_NOTE_PORTA: {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         int destFreq=NOTE_FREQUENCY(c.value2);
         bool return2=false;
         if (destFreq>opChan[ch].baseFreq) {
@@ -503,7 +503,7 @@ void DivPlatformYM2610Ext::tick(bool sysTick) {
     if (opChan[i].std.alg.had) {
       chan[extChanOffs].state.alg=opChan[i].std.alg.val;
       rWrite(chanOffs[extChanOffs]+ADDR_FB_ALG,(chan[extChanOffs].state.alg&7)|(chan[extChanOffs].state.fb<<3));
-      if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
+      if (!parent->song.compatFlags.algMacroBehavior) for (int j=0; j<4; j++) {
         unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[j];
         DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[j];
         if (isOpMuted[j] || !op.enable) {
@@ -534,7 +534,7 @@ void DivPlatformYM2610Ext::tick(bool sysTick) {
 
     if (opChan[i].std.panL.had) {
       opChan[i].pan=opChan[i].std.panL.val&3;
-      if (parent->song.sharedExtStat) {
+      if (parent->song.compatFlags.sharedExtStat) {
         for (int j=0; j<4; j++) {
           if (i==j) continue;
           opChan[j].pan=opChan[i].pan;
@@ -604,7 +604,7 @@ void DivPlatformYM2610Ext::tick(bool sysTick) {
   unsigned char hardResetMask=0;
   if (extMode) for (int i=0; i<4; i++) {
     if (opChan[i].freqChanged) {
-      if (parent->song.linearPitch) {
+      if (parent->song.compatFlags.linearPitch) {
         opChan[i].freq=parent->calcFreq(opChan[i].baseFreq,opChan[i].pitch,opChan[i].fixedArp?opChan[i].baseNoteOverride:opChan[i].arpOff,opChan[i].fixedArp,false,4,opChan[i].pitch2,chipClock,CHIP_FREQBASE,11,chan[extChanOffs].state.block);
       } else {
         int fNum=parent->calcFreq(opChan[i].baseFreq&0x7ff,opChan[i].pitch,opChan[i].fixedArp?opChan[i].baseNoteOverride:opChan[i].arpOff,opChan[i].fixedArp,false,4,opChan[i].pitch2);

src/engine/platform/ymz280b.cpp

@@ -241,7 +241,7 @@ int DivPlatformYMZ280B::dispatch(DivCommand c) {
       chan[c.chan].active=true;
       chan[c.chan].keyOn=true;
       chan[c.chan].macroInit(ins);
-      if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+      if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
         chan[c.chan].outVol=chan[c.chan].vol;
       }
       break;
@@ -287,7 +287,7 @@ int DivPlatformYMZ280B::dispatch(DivCommand c) {
     case DIV_CMD_NOTE_PORTA: {
       int destFreq=NOTE_FREQUENCY(c.value2+chan[c.chan].sampleNoteDelta);
       bool return2=false;
-      int multiplier=(parent->song.linearPitch)?1:256;
+      int multiplier=(parent->song.compatFlags.linearPitch)?1:256;
       if (destFreq>chan[c.chan].baseFreq) {
         chan[c.chan].baseFreq+=c.value*multiplier;
         if (chan[c.chan].baseFreq>=destFreq) {
@@ -316,9 +316,9 @@ int DivPlatformYMZ280B::dispatch(DivCommand c) {
     }
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_SAMPLE_POS:

src/engine/platform/zxbeeper.cpp

@@ -212,9 +212,9 @@ int DivPlatformZXBeeper::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/platform/zxbeeperquadtone.cpp

@@ -190,7 +190,7 @@ int DivPlatformZXBeeperQuadTone::dispatch(DivCommand c) {
         chan[c.chan].keyOn=true;
         chan[c.chan].macroInit(ins);
         chan[c.chan].insChanged=false;
-        if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
+        if (!parent->song.compatFlags.brokenOutVol && !chan[c.chan].std.vol.will) {
           chan[c.chan].outVol=chan[c.chan].vol;
           writeOutVol(c.chan);
         }
@@ -293,9 +293,9 @@ int DivPlatformZXBeeperQuadTone::dispatch(DivCommand c) {
       break;
     case DIV_CMD_PRE_PORTA:
       if (chan[c.chan].active && c.value2) {
-        if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_POKEMINI));
+        if (parent->song.compatFlags.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_POKEMINI));
       }
-      if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
+      if (!chan[c.chan].inPorta && c.value && !parent->song.compatFlags.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
       chan[c.chan].inPorta=c.value;
       break;
     case DIV_CMD_GET_VOLMAX:

src/engine/playback.cpp

@@ -664,9 +664,9 @@ void DivEngine::processRow(int i, bool afterDelay) {
           // - 2: DefleMask (same as 1)
           // in the case of normal, the jump row (changePos) is not reset to 0
           // this means that you can do 0Dxx 0Byy and it'll work, taking you to row xx of order yy
-          if (changeOrd==-1 || song.jumpTreatment==0) {
+          if (changeOrd==-1 || song.compatFlags.jumpTreatment==0) {
             changeOrd=effectVal;
-            if (song.jumpTreatment==1 || song.jumpTreatment==2) {
+            if (song.compatFlags.jumpTreatment==1 || song.compatFlags.jumpTreatment==2) {
               changePos=0;
             }
           }
@@ -676,23 +676,23 @@ void DivEngine::processRow(int i, bool afterDelay) {
           // if there is a 0Dxx effect on the very last order, it is ignored
 
           // COMPAT FLAG: simultaneous jump treatment
-          if (song.jumpTreatment==2) {
+          if (song.compatFlags.jumpTreatment==2) {
             // - 2: DefleMask (jump to next order unless it is the last one and ignoreJumpAtEnd is on)
-            if ((curOrder<(curSubSong->ordersLen-1) || !song.ignoreJumpAtEnd)) {
+            if ((curOrder<(curSubSong->ordersLen-1) || !song.compatFlags.ignoreJumpAtEnd)) {
               // changeOrd -2 means increase order by 1
               // it overrides a previous 0Bxx effect
               changeOrd=-2;
               changePos=effectVal;
             }
-          } else if (song.jumpTreatment==1) {
+          } else if (song.compatFlags.jumpTreatment==1) {
             // - 1: old Furnace (same as 2 but ignored if 0Bxx is present)
-            if (changeOrd<0 && (curOrder<(curSubSong->ordersLen-1) || !song.ignoreJumpAtEnd)) {
+            if (changeOrd<0 && (curOrder<(curSubSong->ordersLen-1) || !song.compatFlags.ignoreJumpAtEnd)) {
               changeOrd=-2;
               changePos=effectVal;
             }
           } else {
             // - 0: normal
-            if (curOrder<(curSubSong->ordersLen-1) || !song.ignoreJumpAtEnd) {
+            if (curOrder<(curSubSong->ordersLen-1) || !song.compatFlags.ignoreJumpAtEnd) {
               // set the target order if not set, allowing you to use 0B and 0D regardless of position
               if (changeOrd<0) {
                 changeOrd=-2;
@@ -710,8 +710,8 @@ void DivEngine::processRow(int i, bool afterDelay) {
             //   - delays equal or greater to the speed are ignored
             // - 2: lax (default)
             //   - no delay is ever ignored unless overridden by another
-            bool comparison=(song.delayBehavior==1)?(effectVal<=nextSpeed):(effectVal<(nextSpeed*(curSubSong->timeBase+1)));
-            if (song.delayBehavior==2) comparison=true;
+            bool comparison=(song.compatFlags.delayBehavior==1)?(effectVal<=nextSpeed):(effectVal<(nextSpeed*(curSubSong->timeBase+1)));
+            if (song.compatFlags.delayBehavior==2) comparison=true;
             if (comparison) {
               // set the delay row, order and timer
               chan[i].rowDelay=effectVal;
@@ -762,7 +762,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
 
       // COMPAT FLAG: legacy volume slides
       // - sets volume to max once a vol slide down has finished (thus setting volume to volMax+1)
-      if (song.legacyVolumeSlides && chan[i].volume==chan[i].volMax+1) {
+      if (song.compatFlags.legacyVolumeSlides && chan[i].volume==chan[i].volMax+1) {
         logV("forcing volume");
         chan[i].volume=chan[i].volMax;
         dispatchCmd(DivCommand(DIV_CMD_VOLUME,i,chan[i].volume>>8));
@@ -780,7 +780,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
     // COMPAT FLAG: reset slides on note off (inverted in the GUI)
     // - a portamento/pitch slide will be halted upon encountering note off
     // - this will not occur if the stopPortaOnNoteOff flag is on and this is a portamento
-    if (chan[i].inPorta && song.noteOffResetsSlides) {
+    if (chan[i].inPorta && song.compatFlags.noteOffResetsSlides) {
       // stopOnOff will be false if stopPortaOnNoteOff flag is off
       if (chan[i].stopOnOff) {
         chan[i].portaNote=-1;
@@ -805,7 +805,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
     chan[i].keyOn=false;
     chan[i].keyOff=true;
     // same thing here regarding reset slide behavior
-    if (chan[i].inPorta && song.noteOffResetsSlides) {
+    if (chan[i].inPorta && song.compatFlags.noteOffResetsSlides) {
       if (chan[i].stopOnOff) {
         chan[i].portaNote=-1;
         chan[i].portaSpeed=-1;
@@ -843,7 +843,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
     chan[i].doNote=true;
     // COMPAT FLAG: compatible arpeggio
     // - once a new note plays, arp will not be applied for this tick
-    if (chan[i].arp!=0 && song.compatibleArpeggio) {
+    if (chan[i].arp!=0 && song.compatFlags.compatibleArpeggio) {
       chan[i].arpYield=true;
     }
   }
@@ -872,7 +872,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
     // COMPAT FLAG: legacy ALWAYS_SET_VOLUME behavior (oldAlwaysSetVolume)
     // - prior to its addition, volume changes wouldn't be effective depending on the system if the volume is the same as the current one
     // - afterwards, volume change is made regardless in order to set the bottom byte of volume ("subvolume")
-    if (!song.oldAlwaysSetVolume || disCont[song.dispatchOfChan[i]].dispatch->getLegacyAlwaysSetVolume() || (MIN(chan[i].volMax,chan[i].volume)>>8)!=pat->newData[whatRow][DIV_PAT_VOL]) {
+    if (!song.compatFlags.oldAlwaysSetVolume || disCont[song.dispatchOfChan[i]].dispatch->getLegacyAlwaysSetVolume() || (MIN(chan[i].volMax,chan[i].volume)>>8)!=pat->newData[whatRow][DIV_PAT_VOL]) {
       // here we let dispatchCmd() know we can do MIDI aftertouch if there isn't a note
       if (pat->newData[whatRow][DIV_PAT_NOTE]==-1) {
         chan[i].midiAftertouch=true;
@@ -982,7 +982,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         // - 02xx still works
         // - a previous portamento (03xx) will prevent this slide from occurring
         // - E1xy/E2xy also will if *another* flag is set
-        if (song.ignoreDuplicateSlides && (lastSlide==0x01 || lastSlide==0x1337)) break;
+        if (song.compatFlags.ignoreDuplicateSlides && (lastSlide==0x01 || lastSlide==0x1337)) break;
         lastSlide=0x01;
         if (effectVal==0) {
           chan[i].portaNote=-1;
@@ -994,12 +994,12 @@ void DivEngine::processRow(int i, bool afterDelay) {
           // - this prompts dispatch to stop processing arp macros during a slide
           // - this only happens if pitch linearity is set to None
           // - if we don't let dispatch know, the slide will never occur as arp takes over
-          if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
+          if (!song.compatFlags.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
         } else {
           // COMPAT FLAG: limit slide range
           // - this confines pitch slides from dispatch->getPortaFloor to C-8 (I think)
           // - yep, the lowest portamento note depends on the system...
-          chan[i].portaNote=song.limitSlides?0x60:255;
+          chan[i].portaNote=song.compatFlags.limitSlides?0x60:255;
           chan[i].portaSpeed=effectVal;
           dispatchCmd(DivCommand(DIV_CMD_HINT_PORTA,i,CLAMP(chan[i].portaNote,-128,127),MAX(chan[i].portaSpeed,0)));
           // most of these are used for compat flag handling
@@ -1013,7 +1013,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
           // - this prompts dispatch to stop processing arp macros during a slide
           // - this only happens if pitch linearity is set to None
           // - if we don't let dispatch know, the slide will never occur as arp takes over
-          if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
+          if (!song.compatFlags.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
         }
         break;
       case 0x02: // pitch slide down
@@ -1022,7 +1022,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         // - 01xx still works
         // - a previous portamento (03xx) will prevent this slide from occurring
         // - E1xy/E2xy also will if *another* flag is set
-        if (song.ignoreDuplicateSlides && (lastSlide==0x02 || lastSlide==0x1337)) break;
+        if (song.compatFlags.ignoreDuplicateSlides && (lastSlide==0x02 || lastSlide==0x1337)) break;
         lastSlide=0x02;
         if (effectVal==0) {
           chan[i].portaNote=-1;
@@ -1030,12 +1030,12 @@ void DivEngine::processRow(int i, bool afterDelay) {
           dispatchCmd(DivCommand(DIV_CMD_HINT_PORTA,i,CLAMP(chan[i].portaNote,-128,127),MAX(chan[i].portaSpeed,0)));
           chan[i].inPorta=false;
           // COMPAT FLAG: arpeggio inhibits non-porta slides
-          if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
+          if (!song.compatFlags.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
         } else {
           // COMPAT FLAG: limit slide range
           // - this confines pitch slides from dispatch->getPortaFloor to C-8 (I think)
           // - yep, the lowest portamento note depends on the system...
-          chan[i].portaNote=(song.limitSlides && song.dispatchChanOfChan[i]>=0)?disCont[song.dispatchOfChan[i]].dispatch->getPortaFloor(song.dispatchChanOfChan[i]):-60;
+          chan[i].portaNote=(song.compatFlags.limitSlides && song.dispatchChanOfChan[i]>=0)?disCont[song.dispatchOfChan[i]].dispatch->getPortaFloor(song.dispatchChanOfChan[i]):-60;
           chan[i].portaSpeed=effectVal;
           dispatchCmd(DivCommand(DIV_CMD_HINT_PORTA,i,CLAMP(chan[i].portaNote,-128,127),MAX(chan[i].portaSpeed,0)));
           chan[i].portaStop=true;
@@ -1044,7 +1044,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
           chan[i].wasShorthandPorta=false;
           chan[i].inPorta=false;
           // COMPAT FLAG: arpeggio inhibits non-porta slides
-          if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
+          if (!song.compatFlags.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
         }
         break;
       case 0x03: // portamento
@@ -1064,7 +1064,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
           // COMPAT FLAG: buggy portamento after sliding
           // - you might want to slide up or down and then 03xx to return to the original note
           // - if a porta to the same note is attempted after slide, for some reason it does not occur
-          if (chan[i].note==chan[i].oldNote && !chan[i].inPorta && song.buggyPortaAfterSlide) {
+          if (chan[i].note==chan[i].oldNote && !chan[i].inPorta && song.compatFlags.buggyPortaAfterSlide) {
             chan[i].portaNote=chan[i].note;
             chan[i].portaSpeed=-1;
           } else {
@@ -1084,7 +1084,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
           // COMPAT FLAG: stop portamento on note off
           // - if a portamento is called and then a note off occurs, stop portamento before the next note
           // - ...unless noteOffResetsSlides is disabled
-          chan[i].stopOnOff=song.stopPortaOnNoteOff; // what?!
+          chan[i].stopOnOff=song.compatFlags.stopPortaOnNoteOff; // what?!
           chan[i].scheduledSlideReset=false;
           dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,1));
           // this is used to inhibit any other slide commands if the respective compat flag is enabled
@@ -1144,7 +1144,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
           calledPorta=true;
           // COMPAT FLAG: buggy portamento after sliding
           // yes, this also affects 06xy.
-          if (chan[i].note==chan[i].oldNote && !chan[i].inPorta && song.buggyPortaAfterSlide) {
+          if (chan[i].note==chan[i].oldNote && !chan[i].inPorta && song.compatFlags.buggyPortaAfterSlide) {
             chan[i].portaNote=chan[i].note;
             chan[i].portaSpeed=-1;
           } else {
@@ -1157,7 +1157,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
           // this is the same as 03xx.
           chan[i].portaStop=true;
           if (chan[i].keyOn) chan[i].doNote=false;
-          chan[i].stopOnOff=song.stopPortaOnNoteOff; // what?!
+          chan[i].stopOnOff=song.compatFlags.stopPortaOnNoteOff; // what?!
           chan[i].scheduledSlideReset=false;
           dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,1));
           lastSlide=0x1337; // i hate this so much
@@ -1224,7 +1224,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         chan[i].arp=effectVal;
         // COMPAT FLAG: reset note to base on arp stop (inverted in the GUI)
         // - a 0000 effect resets arpeggio position
-        if (chan[i].arp==0 && song.arp0Reset) {
+        if (chan[i].arp==0 && song.compatFlags.arp0Reset) {
           chan[i].resetArp=true;
         }
         dispatchCmd(DivCommand(DIV_CMD_HINT_ARPEGGIO,i,chan[i].arp));
@@ -1246,7 +1246,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         // COMPAT FLAG: old sample offset effect
         // - before 0.6.3 the sample offset effect was 9xxx, where `xxx` is multiplied by 256
         // - the effect was then changed to 90xx/91xx/92xx, allowing you to set the low, mid and high bytes of the offset respectively
-        if (song.oldSampleOffset) {
+        if (song.compatFlags.oldSampleOffset) {
           // send sample position now
           dispatchCmd(DivCommand(DIV_CMD_SAMPLE_POS,i,(((effect&0x0f)<<8)|effectVal)*256));
         } else {
@@ -1279,7 +1279,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         //   - ignore cut if equal or greater than speed
         // - 2: lax (default)
         //   - no cut is ever ignored unless overridden by another
-        if (effectVal>0 && (song.delayBehavior==2 || effectVal<nextSpeed)) {
+        if (effectVal>0 && (song.compatFlags.delayBehavior==2 || effectVal<nextSpeed)) {
           // the cut timer is ticked after nextRow(), so we set it one tick higher.
           chan[i].volCut=effectVal+1;
           chan[i].cutType=0;
@@ -1320,7 +1320,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         // these are for compatibility stuff
         chan[i].portaStop=true;
         // COMPAT FLAG: stop portamento on note off
-        chan[i].stopOnOff=song.stopPortaOnNoteOff; // what?!
+        chan[i].stopOnOff=song.compatFlags.stopPortaOnNoteOff; // what?!
         chan[i].scheduledSlideReset=false;
         // only enter portamento if the speed is set
         if ((effectVal&15)!=0) {
@@ -1331,14 +1331,14 @@ void DivEngine::processRow(int i, bool afterDelay) {
           // COMPAT FLAG: broken shortcut slides
           // - oddly enough, shortcut slides are not communicated to the dispatch
           // - this was fixed in 0.5.7
-          if (!song.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
+          if (!song.compatFlags.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
           // COMPAT FLAG: E1xy/E2xy also take priority over slides
           // - another Defle hack. it places shortcut slides above pitch slides.
-          if (song.e1e2AlsoTakePriority) lastSlide=0x1337; // ...
+          if (song.compatFlags.e1e2AlsoTakePriority) lastSlide=0x1337; // ...
         } else {
           chan[i].inPorta=false;
           // COMPAT FLAG: broken shortcut slides
-          if (!song.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
+          if (!song.compatFlags.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
         }
         break;
       case 0xe2: // portamento down
@@ -1348,7 +1348,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         dispatchCmd(DivCommand(DIV_CMD_HINT_PORTA,i,CLAMP(chan[i].portaNote,-128,127),MAX(chan[i].portaSpeed,0)));
         chan[i].portaStop=true;
         // COMPAT FLAG: stop portamento on note off
-        chan[i].stopOnOff=song.stopPortaOnNoteOff; // what?!
+        chan[i].stopOnOff=song.compatFlags.stopPortaOnNoteOff; // what?!
         chan[i].scheduledSlideReset=false;
         if ((effectVal&15)!=0) {
           chan[i].inPorta=true;
@@ -1356,13 +1356,13 @@ void DivEngine::processRow(int i, bool afterDelay) {
           chan[i].shorthandPorta=true;
           chan[i].wasShorthandPorta=true;
           // COMPAT FLAG: broken shortcut slides
-          if (!song.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
+          if (!song.compatFlags.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
           // COMPAT FLAG: E1xy/E2xy also take priority over slides
-          if (song.e1e2AlsoTakePriority) lastSlide=0x1337; // ...
+          if (song.compatFlags.e1e2AlsoTakePriority) lastSlide=0x1337; // ...
         } else {
           chan[i].inPorta=false;
           // COMPAT FLAG: broken shortcut slides
-          if (!song.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
+          if (!song.compatFlags.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
         }
         break;
       case 0xe3: // vibrato shape
@@ -1404,7 +1404,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         // - 2: lax (default)
         //   - no cut is ever ignored unless overridden by another
         // "Bruh"
-        if (effectVal>0 && (song.delayBehavior==2 || effectVal<nextSpeed)) {
+        if (effectVal>0 && (song.compatFlags.delayBehavior==2 || effectVal<nextSpeed)) {
           // the cut timer is ticked after nextRow(), so we set it one tick higher.
           chan[i].cut=effectVal+1;
           chan[i].cutType=2;
@@ -1448,7 +1448,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         //   - ignore cut if equal or greater than speed
         // - 2: lax (default)
         //   - no cut is ever ignored unless overridden by another
-        if (effectVal>0 && (song.delayBehavior==2 || effectVal<nextSpeed)) {
+        if (effectVal>0 && (song.compatFlags.delayBehavior==2 || effectVal<nextSpeed)) {
           // the cut timer is ticked after nextRow(), so we set it one tick higher.
           chan[i].cut=effectVal+1;
           chan[i].cutType=0;
@@ -1539,7 +1539,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         //   - ignore cut if equal or greater than speed
         // - 2: lax (default)
         //   - no cut is ever ignored unless overridden by another
-        if (song.delayBehavior==2 || effectVal<nextSpeed) {
+        if (song.compatFlags.delayBehavior==2 || effectVal<nextSpeed) {
           // the cut timer is ticked after nextRow(), so we set it one tick higher.
           chan[i].cut=effectVal+1;
           chan[i].cutType=1;
@@ -1573,7 +1573,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
   // COMPAT FLAG: instrument changes triggee on portamento (inverted in the GUI)
   // - before 0.6pre1 it was not possible to change instrument during portamento
   // - now it is. this sends a "null" note to allow such change
-  if (insChanged && (chan[i].inPorta || calledPorta) && song.newInsTriggersInPorta) {
+  if (insChanged && (chan[i].inPorta || calledPorta) && song.compatFlags.newInsTriggersInPorta) {
     dispatchCmd(DivCommand(DIV_CMD_NOTE_ON,i,DIV_NOTE_NULL));
   }
 
@@ -1581,7 +1581,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
   if (chan[i].doNote) {
     // COMPAT FLAG: continuous vibrato
     // - when enabled, the vibrato position is not reset on each note
-    if (!song.continuousVibrato) {
+    if (!song.compatFlags.continuousVibrato) {
       chan[i].vibratoPos=0;
     }
     // send pitch now (why? didn't we do that already?)
@@ -1590,7 +1590,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
     // COMPAT FLAG: broken portamento during legato
     // - portamento would not occur if legato is on
     // - this was fixed in 0.6pre4
-    if (chan[i].legato && (!chan[i].inPorta || song.brokenPortaLegato)) {
+    if (chan[i].legato && (!chan[i].inPorta || song.compatFlags.brokenPortaLegato)) {
       dispatchCmd(DivCommand(DIV_CMD_LEGATO,i,chan[i].note));
       dispatchCmd(DivCommand(DIV_CMD_HINT_LEGATO,i,chan[i].note));
     } else {
@@ -1599,13 +1599,13 @@ void DivEngine::processRow(int i, bool afterDelay) {
       if (chan[i].inPorta && chan[i].keyOn && !chan[i].shorthandPorta) {
         // COMPAT FLAG: E1xy/E2xy stop on same note
         // - if there was a shortcut slide, stop it
-        if (song.e1e2StopOnSameNote && chan[i].wasShorthandPorta) {
+        if (song.compatFlags.e1e2StopOnSameNote && chan[i].wasShorthandPorta) {
           chan[i].portaSpeed=-1;
           dispatchCmd(DivCommand(DIV_CMD_HINT_PORTA,i,CLAMP(chan[i].portaNote,-128,127),MAX(chan[i].portaSpeed,0)));
           // COMPAT FLAG: broken shortcut slides
           // - oddly enough, shortcut slides are not communicated to the dispatch
           // - this was fixed in 0.5.7
-          if (!song.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
+          if (!song.compatFlags.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
           chan[i].wasShorthandPorta=false;
           chan[i].inPorta=false;
         } else {
@@ -1620,7 +1620,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
         chan[i].releasing=false;
         // COMPAT FLAG: reset arp position on new note
         // - this does exactly what it says
-        if (song.resetArpPhaseOnNewNote) {
+        if (song.compatFlags.resetArpPhaseOnNewNote) {
            chan[i].arpStage=-1;
         }
         // these are used by VGM/ROM export to determine the duration of loop trail.
@@ -1677,10 +1677,10 @@ void DivEngine::processRow(int i, bool afterDelay) {
         case 0xf2: // single pitch slide down
           if (effect==0xf1) {
             // COMPAT FLAG: limit slide range
-            chan[i].portaNote=song.limitSlides?0x60:255;
+            chan[i].portaNote=song.compatFlags.limitSlides?0x60:255;
           } else {
             // COMPAT FLAG: limit slide range
-            chan[i].portaNote=(song.limitSlides && song.dispatchChanOfChan[i]>=0)?disCont[song.dispatchOfChan[i]].dispatch->getPortaFloor(song.dispatchChanOfChan[i]):-60;
+            chan[i].portaNote=(song.compatFlags.limitSlides && song.dispatchChanOfChan[i]>=0)?disCont[song.dispatchOfChan[i]].dispatch->getPortaFloor(song.dispatchChanOfChan[i]):-60;
           }
           chan[i].portaSpeed=effectVal;
           chan[i].portaStop=true;
@@ -1688,13 +1688,13 @@ void DivEngine::processRow(int i, bool afterDelay) {
           chan[i].scheduledSlideReset=false;
           chan[i].inPorta=false;
           // COMPAT FLAG: arpeggio inhibits non-porta slides
-          if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
-          dispatchCmd(DivCommand(DIV_CMD_NOTE_PORTA,i,chan[i].portaSpeed*(song.linearPitch?song.pitchSlideSpeed:1),chan[i].portaNote));
+          if (!song.compatFlags.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
+          dispatchCmd(DivCommand(DIV_CMD_NOTE_PORTA,i,chan[i].portaSpeed*(song.compatFlags.linearPitch?song.compatFlags.pitchSlideSpeed:1),chan[i].portaNote));
           chan[i].portaNote=-1;
           chan[i].portaSpeed=-1;
           chan[i].inPorta=false;
           // COMPAT FLAG: arpeggio inhibits non-porta slides
-          if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
+          if (!song.compatFlags.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
           break;
       }
     }
@@ -1797,7 +1797,7 @@ void DivEngine::nextRow() {
   for (int i=0; i<song.chans; i++) {
     // COMPAT FLAG: cut/delay effect policy (delayBehavior)
     // - if not lax, reset the row delay timer so it never happens
-    if (song.delayBehavior!=2) {
+    if (song.compatFlags.delayBehavior!=2) {
       chan[i].rowDelay=0;
     }
     processRow(i,false);
@@ -1862,7 +1862,7 @@ void DivEngine::nextRow() {
   // - DefleMask uses a mandatory two-speed system
   // - if the pattern length is odd, the speed to use is determined correctly...
   // - ...unless the order count is also odd! in that case the first row of order 0 will always use speed 1, even if the song looped and we should be using speed 2
-  if (song.brokenSpeedSel) {
+  if (song.compatFlags.brokenSpeedSel) {
     unsigned char speed2=(speeds.len>=2)?speeds.val[1]:speeds.val[0];
     unsigned char speed1=speeds.val[0];
     
@@ -1913,7 +1913,7 @@ void DivEngine::nextRow() {
                 // COMPAT FLAG: pre-note does not take effect into consideration
                 // - a bug which does not cancel pre-note before a portamento or during legato
                 // - fixed in 0.6pre9
-                if (!song.preNoteNoEffect) {
+                if (!song.compatFlags.preNoteNoEffect) {
                   // handle portamento
                   if (pat->newData[curRow][DIV_PAT_FX(j)]==0x03 && pat->newData[curRow][DIV_PAT_FXVAL(j)]!=0 && pat->newData[curRow][DIV_PAT_FXVAL(j)]!=-1) {
                     doPreparePreNote=false;
@@ -1947,7 +1947,7 @@ void DivEngine::nextRow() {
 
           // COMPAT FLAG: auto-insert one tick gap between notes
           // - simulates behavior of certain Amiga/C64 sound drivers where a one-tick cut occurred before another note
-          if (song.oneTickCut) {
+          if (song.compatFlags.oneTickCut) {
             bool doPrepareCut=true;
             int addition=0;
 
@@ -2158,7 +2158,7 @@ bool DivEngine::nextTick(bool noAccum, bool inhibitLowLat) {
               // - 0: reset channels. call playSub() to seek back to the loop position
               // - 1: soft-reset channels. same as 0 for now
               // - 2: don't reset
-              if (song.loopModality!=2) {
+              if (song.compatFlags.loopModality!=2) {
                 playSub(true);
               }
             }
@@ -2205,7 +2205,7 @@ bool DivEngine::nextTick(bool noAccum, bool inhibitLowLat) {
         // volume slides and tremolo
         // COMPAT FLAG: don't slide on the first tick of a row
         // - Amiga/PC tracker behavior where slides and vibrato do not take course during the first tick of a row
-        if (!song.noSlidesOnFirstTick || !firstTick) {
+        if (!song.compatFlags.noSlidesOnFirstTick || !firstTick) {
           // volume slides
           if (chan[i].volSpeed!=0) {
             // the call to GET_VOLUME is part of a compatibility process
@@ -2255,7 +2255,7 @@ bool DivEngine::nextTick(bool noAccum, bool inhibitLowLat) {
               // COMPAT FLAG: legacy volume slides
               // - sets volume to max once a vol slide down has finished (thus setting volume to volMax+1)
               // - there is more to this, such as the first step of volume macro resulting in unpredictable behavior, but I don't feel like implementing THAT...
-              if (song.legacyVolumeSlides) {
+              if (song.compatFlags.legacyVolumeSlides) {
                 chan[i].volume=chan[i].volMax+1;
               } else {
                 chan[i].volume=0;
@@ -2418,7 +2418,7 @@ bool DivEngine::nextTick(bool noAccum, bool inhibitLowLat) {
         // portamento and pitch slides
         // COMPAT FLAG: don't slide on the first tick of a row
         // - Amiga/PC tracker behavior where slides and vibrato do not take course during the first tick of a row
-        if (!song.noSlidesOnFirstTick || !firstTick) {
+        if (!song.compatFlags.noSlidesOnFirstTick || !firstTick) {
           // portamento only runs if the channel has been used and the porta speed is higher than 0
           if ((chan[i].keyOn || chan[i].keyOff) && chan[i].portaSpeed>0) {
             // send a portamento update command to the dispatch.
@@ -2428,7 +2428,7 @@ bool DivEngine::nextTick(bool noAccum, bool inhibitLowLat) {
             // - 1: full (pitch slides linear... we multiply the portamento speed by a user-defined multiplier)
             // COMPAT FLAG: reset pitch slide/portamento upon reaching target (inverted in the GUI)
             // - when disabled, portamento remains active after it has finished
-            if (dispatchCmd(DivCommand(DIV_CMD_NOTE_PORTA,i,chan[i].portaSpeed*(song.linearPitch?song.pitchSlideSpeed:1),chan[i].portaNote))==2 && chan[i].portaStop && song.targetResetsSlides) {
+            if (dispatchCmd(DivCommand(DIV_CMD_NOTE_PORTA,i,chan[i].portaSpeed*(song.compatFlags.linearPitch?song.compatFlags.pitchSlideSpeed:1),chan[i].portaNote))==2 && chan[i].portaStop && song.compatFlags.targetResetsSlides) {
               // if we are here, it means we reached the target and shall stop
               chan[i].portaSpeed=0;
               dispatchCmd(DivCommand(DIV_CMD_HINT_PORTA,i,CLAMP(chan[i].portaNote,-128,127),MAX(chan[i].portaSpeed,0)));
@@ -2454,7 +2454,7 @@ bool DivEngine::nextTick(bool noAccum, bool inhibitLowLat) {
               // COMPAT FLAG: reset slides on note off (inverted in the GUI)
               // - a portamento/pitch slide will be halted upon encountering note off
               // - this will not occur if the stopPortaOnNoteOff flag is on and this is a portamento
-              if (chan[i].inPorta && song.noteOffResetsSlides) {
+              if (chan[i].inPorta && song.compatFlags.noteOffResetsSlides) {
                 chan[i].keyOff=true;
                 chan[i].keyOn=false;
                 // stopOnOff will be false if stopPortaOnNoteOff flag is off
@@ -2503,7 +2503,7 @@ bool DivEngine::nextTick(bool noAccum, bool inhibitLowLat) {
         }
         // COMPAT FLAG: reset arp position on row change
         // - simulates Amiga/PC tracker behavior where the next row resets arp pos
-        if (song.rowResetsArpPos && firstTick) {
+        if (song.compatFlags.rowResetsArpPos && firstTick) {
           chan[i].arpStage=-1;
         }
         // arpeggio (actually)

src/engine/song.cpp

@@ -22,6 +22,8 @@
 #include <inttypes.h>
 #include <chrono>
 
+static DivCompatFlags defaultFlags;
+
 TimeMicros DivSongTimestamps::getTimes(int order, int row) {
   if (order<0 || order>=DIV_MAX_PATTERNS) return TimeMicros(-1,0);
   if (row<0 || row>=DIV_MAX_ROWS) return TimeMicros(-1,0);
@@ -448,6 +450,66 @@ void DivSubSong::calcTimestamps(int chans, std::vector<DivGroovePattern>& groove
   logV("song length: %s; %" PRIu64 " ticks",ts.totalTime.toString(6,TA_TIME_FORMAT_AUTO),ts.totalTicks);
 }
 
+void DivSubSong::putData(SafeWriter* w, int chans) {
+  size_t blockStartSeek, blockEndSeek;
+  w->write("SNG2",4);
+  blockStartSeek=w->tell();
+  w->writeI(0);
+
+  w->writeF(hz);
+  w->writeC(arpLen);
+  w->writeC(timeBase);
+  w->writeS(patLen);
+  w->writeS(ordersLen);
+  w->writeC(hilightA);
+  w->writeC(hilightB);
+  w->writeS(virtualTempoN);
+  w->writeS(virtualTempoD);
+
+  // speeds
+  w->writeS(speeds.len);
+  for (int i=0; i<16; i++) {
+    w->writeS(speeds.val[i]);
+  }
+
+  w->writeString(name,false);
+  w->writeString(notes,false);
+
+  for (int i=0; i<chans; i++) {
+    for (int j=0; j<ordersLen; j++) {
+      w->writeC(orders.ord[i][j]);
+    }
+  }
+
+  for (int i=0; i<chans; i++) {
+    w->writeC(pat[i].effectCols);
+  }
+
+  for (int i=0; i<chans; i++) {
+    w->writeC(
+      (chanShow[i]?1:0)|
+      (chanShowChanOsc[i]?2:0)
+    );
+  }
+
+  for (int i=0; i<chans; i++) {
+    w->writeC(chanCollapse[i]);
+  }
+
+  for (int i=0; i<chans; i++) {
+    w->writeString(chanName[i],false);
+  }
+
+  for (int i=0; i<chans; i++) {
+    w->writeString(chanShortName[i],false);
+  }
+
+  blockEndSeek=w->tell();
+  w->seek(blockStartSeek,SEEK_SET);
+  w->writeI(blockEndSeek-blockStartSeek-4);
+  w->seek(0,SEEK_END);
+}
+
 void DivSubSong::clearData() {
   for (int i=0; i<DIV_MAX_CHANS; i++) {
     pat[i].wipePatterns();
@@ -584,7 +646,7 @@ void DivSong::findSubSongs() {
     // find possible subsongs
     logD("finding subsongs...");
     while (++curStart<i->ordersLen) {
-      i->calcTimestamps(chans,grooves,jumpTreatment,ignoreJumpAtEnd,brokenSpeedSel,delayBehavior,curStart);
+      i->calcTimestamps(chans,grooves,compatFlags.jumpTreatment,compatFlags.ignoreJumpAtEnd,compatFlags.brokenSpeedSel,compatFlags.delayBehavior,curStart);
       if (!i->ts.isLoopable) break;
       
       // make sure we don't pick the same range twice
@@ -809,3 +871,167 @@ void DivSong::unload() {
   }
   subsong.clear();
 }
+
+void DivGroovePattern::putData(SafeWriter* w) {
+  size_t blockStartSeek, blockEndSeek;
+  w->write("GROV",4);
+  blockStartSeek=w->tell();
+  w->writeI(0);
+
+  w->writeS(len);
+  for (int i=0; i<16; i++) {
+    w->writeS(val[i]);
+  }
+
+  blockEndSeek=w->tell();
+  w->seek(blockStartSeek,SEEK_SET);
+  w->writeI(blockEndSeek-blockStartSeek-4);
+  w->seek(0,SEEK_END);
+}
+
+void DivCompatFlags::setDefaults() {
+  limitSlides=false;
+  linearPitch=1;
+  pitchSlideSpeed=4;
+  loopModality=2;
+  delayBehavior=2;
+  jumpTreatment=0;
+  properNoiseLayout=true;
+  waveDutyIsVol=false;
+  resetMacroOnPorta=false;
+  legacyVolumeSlides=false;
+  compatibleArpeggio=false;
+  noteOffResetsSlides=true;
+  targetResetsSlides=true;
+  arpNonPorta=false;
+  algMacroBehavior=false;
+  brokenShortcutSlides=false;
+  ignoreDuplicateSlides=false;
+  stopPortaOnNoteOff=false;
+  continuousVibrato=false;
+  brokenDACMode=false;
+  oneTickCut=false;
+  newInsTriggersInPorta=true;
+  arp0Reset=true;
+  brokenSpeedSel=false;
+  noSlidesOnFirstTick=false;
+  rowResetsArpPos=false;
+  ignoreJumpAtEnd=false;
+  buggyPortaAfterSlide=false;
+  gbInsAffectsEnvelope=true;
+  sharedExtStat=true;
+  ignoreDACModeOutsideIntendedChannel=false;
+  e1e2AlsoTakePriority=false;
+  newSegaPCM=true;
+  fbPortaPause=false;
+  snDutyReset=false;
+  pitchMacroIsLinear=true;
+  oldOctaveBoundary=false;
+  noOPN2Vol=false;
+  newVolumeScaling=true;
+  volMacroLinger=true;
+  brokenOutVol=false;
+  brokenOutVol2=false;
+  e1e2StopOnSameNote=false;
+  brokenPortaArp=false;
+  snNoLowPeriods=false;
+  disableSampleMacro=false;
+  oldArpStrategy=false;
+  brokenPortaLegato=false;
+  brokenFMOff=false;
+  preNoteNoEffect=false;
+  oldDPCM=false;
+  resetArpPhaseOnNewNote=false;
+  ceilVolumeScaling=false;
+  oldAlwaysSetVolume=false;
+  oldSampleOffset=false;
+  oldCenterRate=true;
+}
+
+bool DivCompatFlags::areDefaults() {
+  return (*this==defaultFlags);
+}
+
+#define CHECK_AND_STORE_BOOL(_x) \
+  if (_x!=defaultFlags._x) { \
+    c.set(#_x,_x); \
+  }
+
+#define CHECK_AND_STORE_UNSIGNED_CHAR(_x) \
+  if (_x!=defaultFlags._x) { \
+    c.set(#_x,(int)_x); \
+  }
+
+void DivCompatFlags::putData(SafeWriter* w) {
+  DivConfig c;
+  size_t blockStartSeek, blockEndSeek;
+
+  CHECK_AND_STORE_BOOL(limitSlides);
+  CHECK_AND_STORE_UNSIGNED_CHAR(linearPitch);
+  CHECK_AND_STORE_UNSIGNED_CHAR(pitchSlideSpeed);
+  CHECK_AND_STORE_UNSIGNED_CHAR(loopModality);
+  CHECK_AND_STORE_UNSIGNED_CHAR(delayBehavior);
+  CHECK_AND_STORE_UNSIGNED_CHAR(jumpTreatment);
+  CHECK_AND_STORE_BOOL(properNoiseLayout);
+  CHECK_AND_STORE_BOOL(waveDutyIsVol);
+  CHECK_AND_STORE_BOOL(resetMacroOnPorta);
+  CHECK_AND_STORE_BOOL(legacyVolumeSlides);
+  CHECK_AND_STORE_BOOL(compatibleArpeggio);
+  CHECK_AND_STORE_BOOL(noteOffResetsSlides);
+  CHECK_AND_STORE_BOOL(targetResetsSlides);
+  CHECK_AND_STORE_BOOL(arpNonPorta);
+  CHECK_AND_STORE_BOOL(algMacroBehavior);
+  CHECK_AND_STORE_BOOL(brokenShortcutSlides);
+  CHECK_AND_STORE_BOOL(ignoreDuplicateSlides);
+  CHECK_AND_STORE_BOOL(stopPortaOnNoteOff);
+  CHECK_AND_STORE_BOOL(continuousVibrato);
+  CHECK_AND_STORE_BOOL(brokenDACMode);
+  CHECK_AND_STORE_BOOL(oneTickCut);
+  CHECK_AND_STORE_BOOL(newInsTriggersInPorta);
+  CHECK_AND_STORE_BOOL(arp0Reset);
+  CHECK_AND_STORE_BOOL(brokenSpeedSel);
+  CHECK_AND_STORE_BOOL(noSlidesOnFirstTick);
+  CHECK_AND_STORE_BOOL(rowResetsArpPos);
+  CHECK_AND_STORE_BOOL(ignoreJumpAtEnd);
+  CHECK_AND_STORE_BOOL(buggyPortaAfterSlide);
+  CHECK_AND_STORE_BOOL(gbInsAffectsEnvelope);
+  CHECK_AND_STORE_BOOL(sharedExtStat);
+  CHECK_AND_STORE_BOOL(ignoreDACModeOutsideIntendedChannel);
+  CHECK_AND_STORE_BOOL(e1e2AlsoTakePriority);
+  CHECK_AND_STORE_BOOL(newSegaPCM);
+  CHECK_AND_STORE_BOOL(fbPortaPause);
+  CHECK_AND_STORE_BOOL(snDutyReset);
+  CHECK_AND_STORE_BOOL(pitchMacroIsLinear);
+  CHECK_AND_STORE_BOOL(oldOctaveBoundary);
+  CHECK_AND_STORE_BOOL(noOPN2Vol);
+  CHECK_AND_STORE_BOOL(newVolumeScaling);
+  CHECK_AND_STORE_BOOL(volMacroLinger);
+  CHECK_AND_STORE_BOOL(brokenOutVol);
+  CHECK_AND_STORE_BOOL(brokenOutVol2);
+  CHECK_AND_STORE_BOOL(e1e2StopOnSameNote);
+  CHECK_AND_STORE_BOOL(brokenPortaArp);
+  CHECK_AND_STORE_BOOL(snNoLowPeriods);
+  CHECK_AND_STORE_BOOL(disableSampleMacro);
+  CHECK_AND_STORE_BOOL(oldArpStrategy);
+  CHECK_AND_STORE_BOOL(brokenPortaLegato);
+  CHECK_AND_STORE_BOOL(brokenFMOff);
+  CHECK_AND_STORE_BOOL(preNoteNoEffect);
+  CHECK_AND_STORE_BOOL(oldDPCM);
+  CHECK_AND_STORE_BOOL(resetArpPhaseOnNewNote);
+  CHECK_AND_STORE_BOOL(ceilVolumeScaling);
+  CHECK_AND_STORE_BOOL(oldAlwaysSetVolume);
+  CHECK_AND_STORE_BOOL(oldSampleOffset);
+  CHECK_AND_STORE_BOOL(oldCenterRate);
+
+  String data=c.toString();
+  w->write("CFLG",4);
+  blockStartSeek=w->tell();
+  w->writeI(0);
+
+  w->writeString(data,false);
+
+  blockEndSeek=w->tell();
+  w->seek(blockStartSeek,SEEK_SET);
+  w->writeI(blockEndSeek-blockStartSeek-4);
+  w->seek(0,SEEK_END);
+}

src/engine/song.h

@@ -163,6 +163,7 @@ enum DivEffectType: unsigned short {
 struct DivGroovePattern {
   unsigned char val[16];
   unsigned char len;
+  void putData(SafeWriter* w);
   DivGroovePattern():
     len(1) {
       memset(val,6,16);
@@ -229,6 +230,11 @@ struct DivSubSong {
    */
   void calcTimestamps(int chans, std::vector<DivGroovePattern>& grooves, int jumpTreatment, int ignoreJumpAtEnd, int brokenSpeedSel, int delayBehavior, int firstPat=0);
 
+  /**
+   * write sub-song block to a SafeWriter.
+   */
+  void putData(SafeWriter* w, int chans);
+
   void clearData();
   void removeUnusedPatterns();
   void optimizePatterns();
@@ -269,42 +275,7 @@ struct DivEffectStorage {
     storageLen(0) {}
 };
 
-struct DivSong {
-  unsigned short version;
-  bool isDMF;
-
-  // system
-  int chans;
-  DivSystem system[DIV_MAX_CHIPS];
-  unsigned short systemChans[DIV_MAX_CHIPS];
-  unsigned char systemLen;
-  float systemVol[DIV_MAX_CHIPS];
-  float systemPan[DIV_MAX_CHIPS];
-  float systemPanFR[DIV_MAX_CHIPS];
-  DivConfig systemFlags[DIV_MAX_CHIPS];
-
-  // song information
-  String name, author, systemName;
-
-  // legacy song information
-  // those will be stored in .fur and mapped to VGM as:
-  // category -> game name
-  // writer -> ripper
-  // createdDate -> year
-  String carrier, composer, vendor, category, writer, arranger, copyright, manGroup, manInfo, createdDate, revisionDate;
-
-  // more VGM specific stuff
-  String nameJ, authorJ, categoryJ, systemNameJ;
-
-  // other things
-  String notes;
-
-  // module details
-  int insLen, waveLen, sampleLen;
-  float masterVol;
-  float tuning;
-
-  // compatibility flags
+struct DivCompatFlags {
   bool limitSlides;
   // linear pitch
   unsigned char linearPitch;
@@ -364,9 +335,7 @@ struct DivSong {
   bool brokenPortaArp;
   bool snNoLowPeriods;
   bool disableSampleMacro;
-  bool autoSystem;
   bool oldArpStrategy;
-  bool patchbayAuto;
   bool brokenPortaLegato;
   bool brokenFMOff;
   bool preNoteNoEffect;
@@ -375,9 +344,67 @@ struct DivSong {
   bool ceilVolumeScaling;
   bool oldAlwaysSetVolume;
   bool oldSampleOffset;
-  // TODO: this flag is not saved to the file yet.
+  // new flags as of dev240
   bool oldCenterRate;
 
+  void setDefaults();
+  bool areDefaults();
+  void putData(SafeWriter* w);
+
+  bool operator==(const DivCompatFlags& other) {
+    return (memcmp(this,&other,sizeof(DivCompatFlags))==0);
+  }
+  bool operator!=(const DivCompatFlags& other) {
+    return (memcmp(this,&other,sizeof(DivCompatFlags))!=0);
+  }
+
+  DivCompatFlags() {
+    memset(this,0,sizeof(DivCompatFlags));
+    setDefaults();
+  }
+};
+
+struct DivSong {
+  unsigned short version;
+  bool isDMF;
+
+  // system
+  int chans;
+  DivSystem system[DIV_MAX_CHIPS];
+  unsigned short systemChans[DIV_MAX_CHIPS];
+  unsigned char systemLen;
+  float systemVol[DIV_MAX_CHIPS];
+  float systemPan[DIV_MAX_CHIPS];
+  float systemPanFR[DIV_MAX_CHIPS];
+  DivConfig systemFlags[DIV_MAX_CHIPS];
+
+  // song information
+  String name, author, systemName;
+
+  // legacy song information
+  // those will be stored in .fur and mapped to VGM as:
+  // category -> game name
+  // writer -> ripper
+  // createdDate -> year
+  String carrier, composer, vendor, category, writer, arranger, copyright, manGroup, manInfo, createdDate, revisionDate;
+
+  // more VGM specific stuff
+  String nameJ, authorJ, categoryJ, systemNameJ;
+
+  // other things
+  String notes;
+
+  // module details
+  int insLen, waveLen, sampleLen;
+  float masterVol;
+  float tuning;
+
+  bool autoSystem;
+  bool patchbayAuto;
+
+  // compatibility flags
+  DivCompatFlags compatFlags;
+
   std::vector<DivInstrument*> ins;
   std::vector<DivWavetable*> wave;
   std::vector<DivSample*> sample;
@@ -481,64 +508,8 @@ struct DivSong {
     sampleLen(0),
     masterVol(1.0f),
     tuning(440.0f),
-    limitSlides(false),
-    linearPitch(1),
-    pitchSlideSpeed(4),
-    loopModality(2),
-    delayBehavior(2),
-    jumpTreatment(0),
-    properNoiseLayout(true),
-    waveDutyIsVol(false),
-    resetMacroOnPorta(false),
-    legacyVolumeSlides(false),
-    compatibleArpeggio(false),
-    noteOffResetsSlides(true),
-    targetResetsSlides(true),
-    arpNonPorta(false),
-    algMacroBehavior(false),
-    brokenShortcutSlides(false),
-    ignoreDuplicateSlides(false),
-    stopPortaOnNoteOff(false),
-    continuousVibrato(false),
-    brokenDACMode(false),
-    oneTickCut(false),
-    newInsTriggersInPorta(true),
-    arp0Reset(true),
-    brokenSpeedSel(false),
-    noSlidesOnFirstTick(false),
-    rowResetsArpPos(false),
-    ignoreJumpAtEnd(false),
-    buggyPortaAfterSlide(false),
-    gbInsAffectsEnvelope(true),
-    sharedExtStat(true),
-    ignoreDACModeOutsideIntendedChannel(false),
-    e1e2AlsoTakePriority(false),
-    newSegaPCM(true),
-    fbPortaPause(false),
-    snDutyReset(false),
-    pitchMacroIsLinear(true),
-    oldOctaveBoundary(false),
-    noOPN2Vol(false),
-    newVolumeScaling(true),
-    volMacroLinger(true),
-    brokenOutVol(false),
-    brokenOutVol2(false),
-    e1e2StopOnSameNote(false),
-    brokenPortaArp(false),
-    snNoLowPeriods(false),
-    disableSampleMacro(false),
     autoSystem(true),
-    oldArpStrategy(false),
-    patchbayAuto(true),
-    brokenPortaLegato(false),
-    brokenFMOff(false),
-    preNoteNoEffect(false),
-    oldDPCM(false),
-    resetArpPhaseOnNewNote(false),
-    ceilVolumeScaling(false),
-    oldAlwaysSetVolume(false),
-    oldSampleOffset(false),
-    oldCenterRate(true) {
+    patchbayAuto(true) {
     memset(dispatchFirstChan,0,DIV_MAX_CHANS*sizeof(int));
     memset(dispatchChanOfChan,0,DIV_MAX_CHANS*sizeof(int));
     memset(dispatchOfChan,0,DIV_MAX_CHANS*sizeof(int));

src/engine/vgmOps.cpp

@@ -2736,7 +2736,7 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
           countDown--;
           break;
       }
-      if (song.loopModality!=2) countDown=0;
+      if (song.compatFlags.loopModality!=2) countDown=0;
 
       if (countDown>0 && !beenOneLoopAlready) {
         loopTickSong++;

src/gui/compatFlags.cpp

@@ -32,134 +32,134 @@ void FurnaceGUI::drawCompatFlags() {
     ImGui::TextWrapped(_("these flags are designed to provide better DefleMask/older Furnace compatibility.\nit is recommended to disable most of these unless you rely on specific quirks."));
     if (ImGui::BeginTabBar("settingsTab")) {
       if (ImGui::BeginTabItem(_("DefleMask"))) {
-        if (ImGui::Checkbox(_("Limit slide range"),&e->song.limitSlides)) {
+        if (ImGui::Checkbox(_("Limit slide range"),&e->song.compatFlags.limitSlides)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled, slides are limited to a compatible range.\nmay cause problems with slides in negative octaves."));
         }
-        if (InvCheckbox(_("Compatible noise layout on NES and PC Engine"),&e->song.properNoiseLayout)) {
+        if (InvCheckbox(_("Compatible noise layout on NES and PC Engine"),&e->song.compatFlags.properNoiseLayout)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("use a rather unusual compatible noise frequency layout.\nremoves some noise frequencies on PC Engine."));
         }
-        if (ImGui::Checkbox(_("Game Boy instrument duty is wave volume"),&e->song.waveDutyIsVol)) {
+        if (ImGui::Checkbox(_("Game Boy instrument duty is wave volume"),&e->song.compatFlags.waveDutyIsVol)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("if enabled, an instrument with duty macro in the wave channel will be mapped to wavetable volume."));
         }
 
-        if (ImGui::Checkbox(_("Restart macro on portamento"),&e->song.resetMacroOnPorta)) {
+        if (ImGui::Checkbox(_("Restart macro on portamento"),&e->song.compatFlags.resetMacroOnPorta)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled, a portamento effect will reset the channel's macro if used in combination with a note."));
         }
-        if (ImGui::Checkbox(_("Legacy volume slides"),&e->song.legacyVolumeSlides)) {
+        if (ImGui::Checkbox(_("Legacy volume slides"),&e->song.compatFlags.legacyVolumeSlides)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("simulate glitchy volume slide behavior by silently overflowing the volume when the slide goes below 0."));
         }
-        if (ImGui::Checkbox(_("Compatible arpeggio"),&e->song.compatibleArpeggio)) {
+        if (ImGui::Checkbox(_("Compatible arpeggio"),&e->song.compatFlags.compatibleArpeggio)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("delay arpeggio by one tick on every new note."));
         }
-        if (ImGui::Checkbox(_("Disable DAC when sample ends"),&e->song.brokenDACMode)) {
+        if (ImGui::Checkbox(_("Disable DAC when sample ends"),&e->song.compatFlags.brokenDACMode)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled, the DAC in YM2612 will be disabled if there isn't any sample playing."));
         }
-        if (ImGui::Checkbox(_("Broken speed alternation"),&e->song.brokenSpeedSel)) {
+        if (ImGui::Checkbox(_("Broken speed alternation"),&e->song.compatFlags.brokenSpeedSel)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("determines next speed based on whether the row is odd/even instead of alternating between speeds."));
         }
-        if (ImGui::Checkbox(_("Ignore duplicate slide effects"),&e->song.ignoreDuplicateSlides)) {
+        if (ImGui::Checkbox(_("Ignore duplicate slide effects"),&e->song.compatFlags.ignoreDuplicateSlides)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("if this is on, only the first slide of a row in a channel will be considered."));
         }
-        if (ImGui::Checkbox(_("Ignore 0Dxx on the last order"),&e->song.ignoreJumpAtEnd)) {
+        if (ImGui::Checkbox(_("Ignore 0Dxx on the last order"),&e->song.compatFlags.ignoreJumpAtEnd)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("if this is on, a jump to next row effect will not take place when it is on the last order of a song."));
         }
-        if (ImGui::Checkbox(_("Buggy portamento after pitch slide"),&e->song.buggyPortaAfterSlide)) {
+        if (ImGui::Checkbox(_("Buggy portamento after pitch slide"),&e->song.compatFlags.buggyPortaAfterSlide)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("simulates a bug in where portamento does not work after sliding."));
         }
-        if (ImGui::Checkbox(_("FM pitch slide octave boundary odd behavior"),&e->song.fbPortaPause)) {
+        if (ImGui::Checkbox(_("FM pitch slide octave boundary odd behavior"),&e->song.compatFlags.fbPortaPause)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("if this is on, a pitch slide that crosses the octave boundary will stop for one tick and then continue from the nearest octave boundary.\nfor .dmf compatibility."));
         }
-        if (InvCheckbox(_("Don't apply Game Boy envelope on note-less instrument change"),&e->song.gbInsAffectsEnvelope)) {
+        if (InvCheckbox(_("Don't apply Game Boy envelope on note-less instrument change"),&e->song.compatFlags.gbInsAffectsEnvelope)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("if this is on, an instrument change will not affect the envelope."));
         }
-        if (ImGui::Checkbox(_("Ignore DAC mode change outside of intended channel in ExtCh mode"),&e->song.ignoreDACModeOutsideIntendedChannel)) {
+        if (ImGui::Checkbox(_("Ignore DAC mode change outside of intended channel in ExtCh mode"),&e->song.compatFlags.ignoreDACModeOutsideIntendedChannel)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("if this is on, 17xx has no effect on the operator channels in YM2612."));
         }
-        if (ImGui::Checkbox(_("E1xy/E2xy also take priority over slide stops"),&e->song.e1e2AlsoTakePriority)) {
+        if (ImGui::Checkbox(_("E1xy/E2xy also take priority over slide stops"),&e->song.compatFlags.e1e2AlsoTakePriority)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("does this make any sense by now?"));
         }
-        if (ImGui::Checkbox(_("E1xy/E2xy stop when repeating the same note"),&e->song.e1e2StopOnSameNote)) {
+        if (ImGui::Checkbox(_("E1xy/E2xy stop when repeating the same note"),&e->song.compatFlags.e1e2StopOnSameNote)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("ugh, if only this wasn't a thing..."));
         }
-        if (ImGui::Checkbox(_("SN76489 duty macro always resets phase"),&e->song.snDutyReset)) {
+        if (ImGui::Checkbox(_("SN76489 duty macro always resets phase"),&e->song.compatFlags.snDutyReset)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled, duty macro will always reset phase, even if its value hasn't changed."));
         }
-        if (InvCheckbox(_("Broken volume scaling strategy"),&e->song.newVolumeScaling)) {
+        if (InvCheckbox(_("Broken volume scaling strategy"),&e->song.compatFlags.newVolumeScaling)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled:\n- log scaling: multiply\n- linear scaling: subtract\nwhen disabled:\n- log scaling: subtract\n- linear scaling: multiply"));
         }
-        if (InvCheckbox(_("Don't persist volume macro after it finishes"),&e->song.volMacroLinger)) {
+        if (InvCheckbox(_("Don't persist volume macro after it finishes"),&e->song.compatFlags.volMacroLinger)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled, a value in the volume column that happens after the volume macro is done will disregard the macro."));
         }
-        if (ImGui::Checkbox(_("Broken output volume on instrument change"),&e->song.brokenOutVol)) {
+        if (ImGui::Checkbox(_("Broken output volume on instrument change"),&e->song.compatFlags.brokenOutVol)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("if enabled, no checks for the presence of a volume macro will be made.\nthis will cause the last macro value to linger unless a value in the volume column is present."));
         }
-        if (ImGui::Checkbox(_("Broken output volume - Episode 2 (PLEASE KEEP ME DISABLED)"),&e->song.brokenOutVol2)) {
+        if (ImGui::Checkbox(_("Broken output volume - Episode 2 (PLEASE KEEP ME DISABLED)"),&e->song.compatFlags.brokenOutVol2)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("these compatibility flags are getting SO damn ridiculous and out of control.\nas you may have guessed, this one exists due to yet ANOTHER DefleMask-specific behavior.\nplease keep this off at all costs, because I will not support it when ROM export comes.\noh, and don't start an argument out of it. Furnace isn't a DefleMask replacement, and no,\nI am not trying to make it look like one with all these flags.\n\noh, and what about the other flags that don't have to do with DefleMask?\nthose are for .mod import, future FamiTracker import and personal taste!\n\nend of rant"));
         }
-        if (ImGui::Checkbox(_("Treat SN76489 periods under 8 as 1"),&e->song.snNoLowPeriods)) {
+        if (ImGui::Checkbox(_("Treat SN76489 periods under 8 as 1"),&e->song.compatFlags.snNoLowPeriods)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
@@ -168,115 +168,115 @@ void FurnaceGUI::drawCompatFlags() {
         ImGui::EndTabItem();
       }
       if (ImGui::BeginTabItem(_("Old Furnace"))) {
-        if (ImGui::Checkbox(_("Arpeggio inhibits non-porta slides"),&e->song.arpNonPorta)) {
+        if (ImGui::Checkbox(_("Arpeggio inhibits non-porta slides"),&e->song.compatFlags.arpNonPorta)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.5.5"));
         }
-        if (ImGui::Checkbox(_("Wack FM algorithm macro"),&e->song.algMacroBehavior)) {
+        if (ImGui::Checkbox(_("Wack FM algorithm macro"),&e->song.compatFlags.algMacroBehavior)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.5.5"));
         }
-        if (ImGui::Checkbox(_("Broken shortcut slides (E1xy/E2xy)"),&e->song.brokenShortcutSlides)) {
+        if (ImGui::Checkbox(_("Broken shortcut slides (E1xy/E2xy)"),&e->song.compatFlags.brokenShortcutSlides)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.5.7"));
         }
-        if (ImGui::Checkbox(_("Stop portamento on note off"),&e->song.stopPortaOnNoteOff)) {
+        if (ImGui::Checkbox(_("Stop portamento on note off"),&e->song.compatFlags.stopPortaOnNoteOff)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre1"));
         }
-        if (InvCheckbox(_("Don't allow instrument change during slides"),&e->song.newInsTriggersInPorta)) {
+        if (InvCheckbox(_("Don't allow instrument change during slides"),&e->song.compatFlags.newInsTriggersInPorta)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre1"));
         }
-        if (InvCheckbox(_("Don't reset note to base on arpeggio stop"),&e->song.arp0Reset)) {
+        if (InvCheckbox(_("Don't reset note to base on arpeggio stop"),&e->song.compatFlags.arp0Reset)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre1"));
         }
-        if (InvCheckbox(_("ExtCh channel status is not shared among operators"),&e->song.sharedExtStat)) {
+        if (InvCheckbox(_("ExtCh channel status is not shared among operators"),&e->song.compatFlags.sharedExtStat)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre1"));
         }
-        if (InvCheckbox(_("Disable new SegaPCM features (macros and better panning)"),&e->song.newSegaPCM)) {
+        if (InvCheckbox(_("Disable new SegaPCM features (macros and better panning)"),&e->song.compatFlags.newSegaPCM)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre1"));
         }
-        if (ImGui::Checkbox(_("Old FM octave boundary behavior"),&e->song.oldOctaveBoundary)) {
+        if (ImGui::Checkbox(_("Old FM octave boundary behavior"),&e->song.compatFlags.oldOctaveBoundary)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre1"));
         }
-        if (ImGui::Checkbox(_("Disable OPN2 DAC volume control"),&e->song.noOPN2Vol)) {
+        if (ImGui::Checkbox(_("Disable OPN2 DAC volume control"),&e->song.compatFlags.noOPN2Vol)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre1"));
         }
-        if (ImGui::Checkbox(_("Broken initial position of portamento after arpeggio"),&e->song.brokenPortaArp)) {
+        if (ImGui::Checkbox(_("Broken initial position of portamento after arpeggio"),&e->song.compatFlags.brokenPortaArp)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre1.5"));
         }
-        if (ImGui::Checkbox(_("Disable new sample features"),&e->song.disableSampleMacro)) {
+        if (ImGui::Checkbox(_("Disable new sample features"),&e->song.compatFlags.disableSampleMacro)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre2"));
         }
-        if (ImGui::Checkbox(_("Old arpeggio macro + pitch slide strategy"),&e->song.oldArpStrategy)) {
+        if (ImGui::Checkbox(_("Old arpeggio macro + pitch slide strategy"),&e->song.compatFlags.oldArpStrategy)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre2"));
         }
-        if (ImGui::Checkbox(_("Broken portamento during legato"),&e->song.brokenPortaLegato)) {
+        if (ImGui::Checkbox(_("Broken portamento during legato"),&e->song.compatFlags.brokenPortaLegato)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre4"));
         }
-        if (ImGui::Checkbox(_("Broken macros in some FM chips after note off"),&e->song.brokenFMOff)) {
+        if (ImGui::Checkbox(_("Broken macros in some FM chips after note off"),&e->song.compatFlags.brokenFMOff)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre5"));
         }
-        if (ImGui::Checkbox(_("Pre-note does not take effects into consideration"),&e->song.preNoteNoEffect)) {
+        if (ImGui::Checkbox(_("Pre-note does not take effects into consideration"),&e->song.compatFlags.preNoteNoEffect)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6pre9"));
         }
-        if (ImGui::Checkbox(_("Disable new NES DPCM features"),&e->song.oldDPCM)) {
+        if (ImGui::Checkbox(_("Disable new NES DPCM features"),&e->song.compatFlags.oldDPCM)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6.1"));
         }
-        if (ImGui::Checkbox(_("Legacy technical ALWAYS_SET_VOLUME behavior"),&e->song.oldAlwaysSetVolume)) {
+        if (ImGui::Checkbox(_("Legacy technical ALWAYS_SET_VOLUME behavior"),&e->song.compatFlags.oldAlwaysSetVolume)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("behavior changed in 0.6.1\nthis flag will be removed if I find out that none of the songs break after disabling it."));
         }
-        if (ImGui::Checkbox(_("Old sample offset effect"),&e->song.oldSampleOffset)) {
+        if (ImGui::Checkbox(_("Old sample offset effect"),&e->song.compatFlags.oldSampleOffset)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
@@ -285,13 +285,13 @@ void FurnaceGUI::drawCompatFlags() {
         ImGui::EndTabItem();
       }
       if (ImGui::BeginTabItem(_(".mod import"))) {
-        if (ImGui::Checkbox(_("Don't slide on the first tick of a row"),&e->song.noSlidesOnFirstTick)) {
+        if (ImGui::Checkbox(_("Don't slide on the first tick of a row"),&e->song.compatFlags.noSlidesOnFirstTick)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("simulates ProTracker's behavior of not applying volume/pitch slides on the first tick of a row."));
         }
-        if (ImGui::Checkbox(_("Reset arpeggio position on row change"),&e->song.rowResetsArpPos)) {
+        if (ImGui::Checkbox(_("Reset arpeggio position on row change"),&e->song.compatFlags.rowResetsArpPos)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
@@ -302,15 +302,15 @@ void FurnaceGUI::drawCompatFlags() {
       if (ImGui::BeginTabItem(_("Pitch/Playback"))) {
         ImGui::Text(_("Pitch linearity:"));
         ImGui::Indent();
-        if (ImGui::RadioButton(_("None"),!e->song.linearPitch)) {
-          e->song.linearPitch=0;
+        if (ImGui::RadioButton(_("None"),!e->song.compatFlags.linearPitch)) {
+          e->song.compatFlags.linearPitch=0;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("like ProTracker/FamiTracker"));
         }
-        if (ImGui::RadioButton(_("Full"),e->song.linearPitch)) {
-          e->song.linearPitch=1;
+        if (ImGui::RadioButton(_("Full"),e->song.compatFlags.linearPitch)) {
+          e->song.compatFlags.linearPitch=1;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
@@ -318,34 +318,34 @@ void FurnaceGUI::drawCompatFlags() {
         }
         ImGui::Unindent();
 
-        if (e->song.linearPitch) {
+        if (e->song.compatFlags.linearPitch) {
           ImGui::SameLine();
           ImGui::SetNextItemWidth(120.0f*dpiScale);
-          if (ImGui::InputScalar(_("Pitch slide speed multiplier"),ImGuiDataType_U8,&e->song.pitchSlideSpeed,&_ONE,&_ONE)) {
-            if (e->song.pitchSlideSpeed<1) e->song.pitchSlideSpeed=1;
-            if (e->song.pitchSlideSpeed>64) e->song.pitchSlideSpeed=64;
+          if (ImGui::InputScalar(_("Pitch slide speed multiplier"),ImGuiDataType_U8,&e->song.compatFlags.pitchSlideSpeed,&_ONE,&_ONE)) {
+            if (e->song.compatFlags.pitchSlideSpeed<1) e->song.compatFlags.pitchSlideSpeed=1;
+            if (e->song.compatFlags.pitchSlideSpeed>64) e->song.compatFlags.pitchSlideSpeed=64;
             MARK_MODIFIED;
           }
         }
 
         ImGui::Text(_("Loop modality:"));
         ImGui::Indent();
-        if (ImGui::RadioButton(_("Reset channels"),e->song.loopModality==0)) {
-          e->song.loopModality=0;
+        if (ImGui::RadioButton(_("Reset channels"),e->song.compatFlags.loopModality==0)) {
+          e->song.compatFlags.loopModality=0;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("select to reset channels on loop. may trigger a voltage click on every loop!"));
         }
-        if (ImGui::RadioButton(_("Soft reset channels"),e->song.loopModality==1)) {
-          e->song.loopModality=1;
+        if (ImGui::RadioButton(_("Soft reset channels"),e->song.compatFlags.loopModality==1)) {
+          e->song.compatFlags.loopModality=1;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("select to turn channels off on loop."));
         }
-        if (ImGui::RadioButton(_("Do nothing"),e->song.loopModality==2)) {
-          e->song.loopModality=2;
+        if (ImGui::RadioButton(_("Do nothing"),e->song.compatFlags.loopModality==2)) {
+          e->song.compatFlags.loopModality=2;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
@@ -355,22 +355,22 @@ void FurnaceGUI::drawCompatFlags() {
 
         ImGui::Text(_("Cut/delay effect policy:"));
         ImGui::Indent();
-        if (ImGui::RadioButton(_("Strict"),e->song.delayBehavior==0)) {
-          e->song.delayBehavior=0;
+        if (ImGui::RadioButton(_("Strict"),e->song.compatFlags.delayBehavior==0)) {
+          e->song.compatFlags.delayBehavior=0;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("only when time is less than speed (like DefleMask/ProTracker)"));
         }
-        if (ImGui::RadioButton(_("Strict (old)"),e->song.delayBehavior==1)) {
-          e->song.delayBehavior=1;
+        if (ImGui::RadioButton(_("Strict (old)"),e->song.compatFlags.delayBehavior==1)) {
+          e->song.compatFlags.delayBehavior=1;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("only when time is less than or equal to speed (original buggy behavior)"));
         }
-        if (ImGui::RadioButton(_("Lax"),e->song.delayBehavior==2)) {
-          e->song.delayBehavior=2;
+        if (ImGui::RadioButton(_("Lax"),e->song.compatFlags.delayBehavior==2)) {
+          e->song.compatFlags.delayBehavior=2;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
@@ -380,22 +380,22 @@ void FurnaceGUI::drawCompatFlags() {
 
         ImGui::Text(_("Simultaneous jump (0B+0D) treatment:"));
         ImGui::Indent();
-        if (ImGui::RadioButton(_("Normal"),e->song.jumpTreatment==0)) {
-          e->song.jumpTreatment=0;
+        if (ImGui::RadioButton(_("Normal"),e->song.compatFlags.jumpTreatment==0)) {
+          e->song.compatFlags.jumpTreatment=0;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("accept 0B+0D to jump to a specific row of an order"));
         }
-        if (ImGui::RadioButton(_("Old Furnace"),e->song.jumpTreatment==1)) {
-          e->song.jumpTreatment=1;
+        if (ImGui::RadioButton(_("Old Furnace"),e->song.compatFlags.jumpTreatment==1)) {
+          e->song.compatFlags.jumpTreatment=1;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("only accept the first jump effect"));
         }
-        if (ImGui::RadioButton(_("DefleMask"),e->song.jumpTreatment==2)) {
-          e->song.jumpTreatment=2;
+        if (ImGui::RadioButton(_("DefleMask"),e->song.compatFlags.jumpTreatment==2)) {
+          e->song.compatFlags.jumpTreatment=2;
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
@@ -405,7 +405,7 @@ void FurnaceGUI::drawCompatFlags() {
         ImGui::EndTabItem();
       }
       if (ImGui::BeginTabItem(_("Other"))) {
-        if (ImGui::Checkbox(_("Auto-insert one tick gap between notes"),&e->song.oneTickCut)) {
+        if (ImGui::Checkbox(_("Auto-insert one tick gap between notes"),&e->song.compatFlags.oneTickCut)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
@@ -414,37 +414,37 @@ void FurnaceGUI::drawCompatFlags() {
 
         ImGui::Separator();
 
-        if (InvCheckbox(_("Don't reset slides after note off"),&e->song.noteOffResetsSlides)) {
+        if (InvCheckbox(_("Don't reset slides after note off"),&e->song.compatFlags.noteOffResetsSlides)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled, note off will not reset the channel's slide effect."));
         }
-        if (InvCheckbox(_("Don't reset portamento after reaching target"),&e->song.targetResetsSlides)) {
+        if (InvCheckbox(_("Don't reset portamento after reaching target"),&e->song.compatFlags.targetResetsSlides)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled, the slide effect will not be disabled after it reaches its target."));
         }
-        if (ImGui::Checkbox(_("Continuous vibrato"),&e->song.continuousVibrato)) {
+        if (ImGui::Checkbox(_("Continuous vibrato"),&e->song.compatFlags.continuousVibrato)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled, vibrato phase/position will not be reset on a new note."));
         }
-        if (InvCheckbox(_("Pitch macro is not linear"),&e->song.pitchMacroIsLinear)) {
+        if (InvCheckbox(_("Pitch macro is not linear"),&e->song.compatFlags.pitchMacroIsLinear)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled, the pitch macro of an instrument is in frequency/period space."));
         }
-        if (ImGui::Checkbox(_("Reset arpeggio effect position on new note"),&e->song.resetArpPhaseOnNewNote)) {
+        if (ImGui::Checkbox(_("Reset arpeggio effect position on new note"),&e->song.compatFlags.resetArpPhaseOnNewNote)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip(_("when enabled, arpeggio effect (00xy) position is reset on a new note."));
         }
-        if (ImGui::Checkbox(_("Volume scaling rounds up"),&e->song.ceilVolumeScaling)) {
+        if (ImGui::Checkbox(_("Volume scaling rounds up"),&e->song.compatFlags.ceilVolumeScaling)) {
           MARK_MODIFIED;
         }
         if (ImGui::IsItemHovered()) {

src/gui/exportOptions.cpp

@@ -266,7 +266,7 @@ void FurnaceGUI::drawExportVGM(bool onWindow) {
     ImGui::EndCombo();
   }
   ImGui::Checkbox(_("loop"),&vgmExportLoop);
-  if (vgmExportLoop && e->song.loopModality==2) {
+  if (vgmExportLoop && e->song.compatFlags.loopModality==2) {
     ImGui::Text(_("loop trail:"));
     ImGui::Indent();
     if (ImGui::RadioButton(_("auto-detect"),vgmExportTrailingTicks==-1)) {

src/gui/insEdit.cpp

@@ -3448,10 +3448,10 @@ void FurnaceGUI::insTabSample(DivInstrument* ins) {
   const char* sampleTabName=_("Sample");
   if (ins->type==DIV_INS_NES) sampleTabName=_("DPCM");
   if (ImGui::BeginTabItem(sampleTabName)) {
-    if (ins->type==DIV_INS_NES && e->song.oldDPCM) {
+    if (ins->type==DIV_INS_NES && e->song.compatFlags.oldDPCM) {
       ImGui::Text(_("new DPCM features disabled (compatibility)!"));
       if (ImGui::Button(_("click here to enable them."))) {
-        e->song.oldDPCM=false;
+        e->song.compatFlags.oldDPCM=false;
         MARK_MODIFIED;
       }
       ImGui::EndTabItem();
@@ -4694,7 +4694,7 @@ void FurnaceGUI::insTabFM(DivInstrument* ins) {
                 op.egt=egtOn;
               }
               if (egtOn) {
-                pushWarningColor(susOn && !e->song.linearPitch);
+                pushWarningColor(susOn && !e->song.compatFlags.linearPitch);
                 if (ImGui::Checkbox(_("Pitch control"),&susOn)) { PARAMETER
                   op.sus=susOn;
                   // HACK: reset zoom and scroll in fixed pitch macros so that they draw correctly
@@ -4703,7 +4703,7 @@ void FurnaceGUI::insTabFM(DivInstrument* ins) {
                 }
                 popWarningColor();
                 if (ImGui::IsItemHovered()) {
-                  if (susOn && !e->song.linearPitch) {
+                  if (susOn && !e->song.compatFlags.linearPitch) {
                     ImGui::SetTooltip(_("only works on linear pitch! go to Compatibility Flags > Pitch/Playback and set Pitch linearity to Full."));
                   } else {
                     ImGui::SetTooltip(_("use op's arpeggio and pitch macros control instead of block/f-num macros"));
@@ -5470,7 +5470,7 @@ void FurnaceGUI::insTabFM(DivInstrument* ins) {
                   P(CWSliderScalar("##FINE",ImGuiDataType_U8,&op.dvb,&_ZERO,&_FIFTEEN,tempID)); rightClickable
                 } else {
                   bool susOn=op.sus;
-                  pushWarningColor(susOn && !e->song.linearPitch);
+                  pushWarningColor(susOn && !e->song.compatFlags.linearPitch);
                   if (ImGui::Checkbox(_("Pitch control"),&susOn)) { PARAMETER
                     op.sus=susOn;
                     // HACK: reset zoom and scroll in fixed pitch macros so that they draw correctly
@@ -5479,7 +5479,7 @@ void FurnaceGUI::insTabFM(DivInstrument* ins) {
                   }
                   popWarningColor();
                   if (ImGui::IsItemHovered()) {
-                    if (susOn && !e->song.linearPitch) {
+                    if (susOn && !e->song.compatFlags.linearPitch) {
                       ImGui::SetTooltip(_("only works on linear pitch! go to Compatibility Flags > Pitch/Playback and set Pitch linearity to Full."));
                     } else {
                       ImGui::SetTooltip(_("use op's arpeggio and pitch macros control instead of block/f-num macros"));
@@ -5793,7 +5793,7 @@ void FurnaceGUI::insTabFM(DivInstrument* ins) {
             bool susOn=op.sus;
             if (fixedOn) {
               ImGui::SameLine();
-              pushWarningColor(susOn && !e->song.linearPitch);
+              pushWarningColor(susOn && !e->song.compatFlags.linearPitch);
               if (ImGui::Checkbox(_("Pitch control"),&susOn)) { PARAMETER
                 op.sus=susOn;
                 // HACK: reset zoom and scroll in fixed pitch macros so that they draw correctly
@@ -5802,7 +5802,7 @@ void FurnaceGUI::insTabFM(DivInstrument* ins) {
               }
               popWarningColor();
               if (ImGui::IsItemHovered()) {
-                if (susOn && !e->song.linearPitch) {
+                if (susOn && !e->song.compatFlags.linearPitch) {
                   ImGui::SetTooltip(_("only works on linear pitch! go to Compatibility Flags > Pitch/Playback and set Pitch linearity to Full."));
                 } else {
                   ImGui::SetTooltip(_("use op's arpeggio and pitch macros control instead of block/f-num macros"));

src/gui/sysConf.cpp

@@ -1322,11 +1322,11 @@ bool FurnaceGUI::drawSysConf(int chan, int sysPos, DivSystem type, DivConfig& fl
       if (ImGui::Checkbox(_("Amiga channel volumes (64)"),&amigaVol)) {
         altered=true;
       }
-      pushWarningColor(amigaPitch && e->song.linearPitch);
+      pushWarningColor(amigaPitch && e->song.compatFlags.linearPitch);
       if (ImGui::Checkbox(_("Amiga-like pitch (non-linear pitch only)"),&amigaPitch)) {
         altered=true;
       }
-      if (amigaPitch && e->song.linearPitch) {
+      if (amigaPitch && e->song.compatFlags.linearPitch) {
         if (ImGui::IsItemHovered()) {
           ImGui::SetTooltip("pitch linearity is set to linear. this won't do anything!");
         }