Merge branch 'master' of https://github.com/tildearrow/furnace into es5506_alt

CMakeLists.txt

@@ -597,6 +597,7 @@ src/gui/editControls.cpp
 src/gui/effectList.cpp
 src/gui/findReplace.cpp
 src/gui/gradient.cpp
+src/gui/grooves.cpp
 src/gui/insEdit.cpp
 src/gui/log.cpp
 src/gui/mixer.cpp

papers/format.md

@@ -32,6 +32,7 @@ these fields are 0 in format versions prior to 100 (0.6pre1).
 
 the format versions are:
 
+- 139: Furnace dev139
 - 138: Furnace dev138
 - 137: Furnace dev137
 - 136: Furnace dev136
@@ -403,6 +404,14 @@ size | description
  --- | **a couple more compat flags** (>=138)
   1  | broken portamento during legato
   7  | reserved
+ --- | **speed pattern of first song** (>=139)
+  1  | length of speed pattern (fail if this is lower than 0 or higher than 16)
+ 16  | speed pattern (this overrides speed 1 and speed 2 settings)
+ --- | **groove list** (>=139)
+  1  | number of entries
+ ??? | groove entries. the format is:
+     | - 1 byte: length of groove
+     | - 16 bytes: groove pattern
 ```
 
 # patchbay
@@ -472,6 +481,9 @@ size | description
      | - a list of channelCount C strings
  S?? | channel short names
      | - same as above
+ --- | **speed pattern** (>=139)
+  1  | length of speed pattern (fail if this is lower than 0 or higher than 16)
+ 16  | speed pattern (this overrides speed 1 and speed 2 settings)
 ```
 
 # chip flags

src/engine/defines.h

@@ -24,6 +24,7 @@
 #define DIV_MAX_CHIPS 32
 #define DIV_MAX_CHANS 128
 #define DIV_MAX_PATTERNS 256
+#define DIV_MAX_CHIP_DEFS 256
 
 // in-pattern
 #define DIV_MAX_ROWS 256

src/engine/engine.cpp

@@ -60,7 +60,7 @@ const char* DivEngine::getEffectDesc(unsigned char effect, int chan, bool notNul
     case 0x08:
       return "08xy: Set panning (x: left; y: right)";
     case 0x09:
-      return "09xx: Set speed 1";
+      return "09xx: Set groove pattern (speed 1 if no grooves exist)";
     case 0x0a:
       return "0Axy: Volume slide (0y: down; x0: up)";
     case 0x0b:
@@ -70,7 +70,7 @@ const char* DivEngine::getEffectDesc(unsigned char effect, int chan, bool notNul
     case 0x0d:
       return "0Dxx: Jump to next pattern";
     case 0x0f:
-      return "0Fxx: Set speed 2";
+      return "0Fxx: Set speed (speed 2 if no grooves exist)";
     case 0x80:
       return "80xx: Set panning (00: left; 80: center; FF: right)";
     case 0x81:
@@ -1959,14 +1959,12 @@ String DivEngine::getPlaybackDebugInfo() {
     "cmdsPerSecond: %d\n"
     "globalPitch: %d\n"
     "extValue: %d\n"
-    "speed1: %d\n"
-    "speed2: %d\n"
     "tempoAccum: %d\n"
     "totalProcessed: %d\n"
     "bufferPos: %d\n",
     curOrder,prevOrder,curRow,prevRow,ticks,subticks,totalLoops,lastLoopPos,nextSpeed,divider,cycles,clockDrift,
     changeOrd,changePos,totalSeconds,totalTicks,totalTicksR,totalCmds,lastCmds,cmdsPerSecond,globalPitch,
-    (int)extValue,(int)speed1,(int)speed2,(int)tempoAccum,(int)totalProcessed,(int)bufferPos
+    (int)extValue,(int)tempoAccum,(int)totalProcessed,(int)bufferPos
   );
 }
 
@@ -2091,7 +2089,8 @@ void DivEngine::playSub(bool preserveDrift, int goalRow) {
     lastLoopPos=-1;
   }
   endOfSong=false;
-  speedAB=false;
+  // whaaaaa?
+  curSpeed=0;
   playing=true;
   skipping=true;
   memset(walked,0,8192);
@@ -2439,15 +2438,14 @@ void DivEngine::reset() {
   }
   extValue=0;
   extValuePresent=0;
-  speed1=curSubSong->speed1;
+  speeds=curSubSong->speeds;
-  speed2=curSubSong->speed2;
   firstTick=false;
   shallStop=false;
   shallStopSched=false;
   pendingMetroTick=0;
   elapsedBars=0;
   elapsedBeats=0;
-  nextSpeed=speed1;
+  nextSpeed=speeds.val[0];
   divider=60;
   if (curSubSong->customTempo) {
     divider=curSubSong->hz;
@@ -2649,12 +2647,8 @@ size_t DivEngine::getCurrentSubSong() {
   return curSubSongIndex;
 }
 
-unsigned char DivEngine::getSpeed1() {
+const DivGroovePattern& DivEngine::getSpeeds() {
-  return speed1;
+  return speeds;
-}
-
-unsigned char DivEngine::getSpeed2() {
-  return speed2;
 }
 
 float DivEngine::getHz() {
@@ -4236,7 +4230,7 @@ void DivEngine::quitDispatch() {
   clockDrift=0;
   chans=0;
   playing=false;
-  speedAB=false;
+  curSpeed=0;
   endOfSong=false;
   ticks=0;
   tempoAccum=0;

src/engine/engine.h

@@ -47,8 +47,8 @@
 #define BUSY_BEGIN_SOFT softLocked=true; isBusy.lock();
 #define BUSY_END isBusy.unlock(); softLocked=false;
 
-#define DIV_VERSION "dev138"
+#define DIV_VERSION "dev139"
-#define DIV_ENGINE_VERSION 138
+#define DIV_ENGINE_VERSION 139
 // for imports
 #define DIV_VERSION_MOD 0xff01
 #define DIV_VERSION_FC 0xff02
@@ -337,7 +337,6 @@ class DivEngine {
   bool playing;
   bool freelance;
   bool shallStop, shallStopSched;
-  bool speedAB;
   bool endOfSong;
   bool consoleMode;
   bool extValuePresent;
@@ -359,7 +358,7 @@ class DivEngine {
   bool midiOutClock;
   int midiOutMode;
   int softLockCount;
-  int subticks, ticks, curRow, curOrder, prevRow, prevOrder, remainingLoops, totalLoops, lastLoopPos, exportLoopCount, nextSpeed, elapsedBars, elapsedBeats;
+  int subticks, ticks, curRow, curOrder, prevRow, prevOrder, remainingLoops, totalLoops, lastLoopPos, exportLoopCount, nextSpeed, elapsedBars, elapsedBeats, curSpeed;
   size_t curSubSongIndex;
   size_t bufferPos;
   double divider;
@@ -368,7 +367,7 @@ class DivEngine {
   int stepPlay;
   int changeOrd, changePos, totalSeconds, totalTicks, totalTicksR, totalCmds, lastCmds, cmdsPerSecond, globalPitch;
   unsigned char extValue, pendingMetroTick;
-  unsigned char speed1, speed2;
+  DivGroovePattern speeds;
   short tempoAccum;
   DivStatusView view;
   DivHaltPositions haltOn;
@@ -391,9 +390,9 @@ class DivEngine {
   std::vector<String> midiOuts;
   std::vector<DivCommand> cmdStream;
   std::vector<DivInstrumentType> possibleInsTypes;
-  static DivSysDef* sysDefs[256];
+  static DivSysDef* sysDefs[DIV_MAX_CHIP_DEFS];
-  static DivSystem sysFileMapFur[256];
+  static DivSystem sysFileMapFur[DIV_MAX_CHIP_DEFS];
-  static DivSystem sysFileMapDMF[256];
+  static DivSystem sysFileMapDMF[DIV_MAX_CHIP_DEFS];
 
   struct SamplePreview {
     double rate;
@@ -730,11 +729,8 @@ class DivEngine {
     // get current subsong
     size_t getCurrentSubSong();
 
-    // get speed 1
+    // get speeds
-    unsigned char getSpeed1();
+    const DivGroovePattern& getSpeeds();
-
-    // get speed 2
-    unsigned char getSpeed2();
 
     // get Hz
     float getHz();
@@ -1065,7 +1061,6 @@ class DivEngine {
       freelance(false),
       shallStop(false),
       shallStopSched(false),
-      speedAB(false),
       endOfSong(false),
       consoleMode(false),
       extValuePresent(false),
@@ -1099,6 +1094,7 @@ class DivEngine {
       nextSpeed(3),
       elapsedBars(0),
       elapsedBeats(0),
+      curSpeed(0),
       curSubSongIndex(0),
       bufferPos(0),
       divider(60),
@@ -1116,8 +1112,6 @@ class DivEngine {
       globalPitch(0),
       extValue(0),
       pendingMetroTick(0),
-      speed1(3),
-      speed2(3),
       tempoAccum(0),
       view(DIV_STATUS_NOTHING),
       haltOn(DIV_HALT_NONE),
@@ -1162,11 +1156,11 @@ class DivEngine {
       memset(tremTable,0,128*sizeof(short));
       memset(reversePitchTable,0,4096*sizeof(int));
       memset(pitchTable,0,4096*sizeof(int));
-      memset(sysDefs,0,256*sizeof(void*));
+      memset(sysDefs,0,DIV_MAX_CHIP_DEFS*sizeof(void*));
       memset(walked,0,8192);
       memset(oscBuf,0,DIV_MAX_OUTPUTS*(sizeof(float*)));
 
-      for (int i=0; i<256; i++) {
+      for (int i=0; i<DIV_MAX_CHIP_DEFS; i++) {
         sysFileMapFur[i]=DIV_SYSTEM_NULL;
         sysFileMapDMF[i]=DIV_SYSTEM_NULL;
       }

src/engine/fileOps.cpp

@@ -83,7 +83,7 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
     }
     ds.version=(unsigned char)reader.readC();
     logI("module version %d (0x%.2x)",ds.version,ds.version);
-    if (ds.version>0x1a) {
+    if (ds.version>0x1b) {
       logE("this version is not supported by Furnace yet!");
       lastError="this version is not supported by Furnace yet";
       delete[] file;
@@ -219,14 +219,15 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
     }
 
     ds.subsong[0]->timeBase=reader.readC();
-    ds.subsong[0]->speed1=reader.readC();
+    ds.subsong[0]->speeds.len=2;
+    ds.subsong[0]->speeds.val[0]=reader.readC();
     if (ds.version>0x07) {
-      ds.subsong[0]->speed2=reader.readC();
+      ds.subsong[0]->speeds.val[1]=reader.readC();
       ds.subsong[0]->pal=reader.readC();
       ds.subsong[0]->hz=(ds.subsong[0]->pal)?60:50;
       ds.subsong[0]->customTempo=reader.readC();
     } else {
-      ds.subsong[0]->speed2=ds.subsong[0]->speed1;
+      ds.subsong[0]->speeds.len=1;
     }
     if (ds.version>0x0a) {
       String hz=reader.readString(3);
@@ -827,6 +828,8 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
     for (int i=0; i<ds.sampleLen; i++) {
       DivSample* sample=new DivSample;
       int length=reader.readI();
+      int cutStart=0;
+      int cutEnd=length;
       int pitch=5;
       int vol=50;
       short* data;
@@ -866,6 +869,29 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
           sample->depth=DIV_SAMPLE_DEPTH_YMZ_ADPCM;
         }
       }
+      if (ds.version>=0x1a) {
+        // what the hell man...
+        cutStart=reader.readI();
+        cutEnd=reader.readI();
+        if (cutStart<0 || cutStart>length) {
+          logE("cutStart is out of range! (%d)",cutStart);
+          lastError="file is corrupt or unreadable at samples";
+          delete[] file;
+          return false;
+        }
+        if (cutEnd<0 || cutEnd>length) {
+          logE("cutEnd is out of range! (%d)",cutEnd);
+          lastError="file is corrupt or unreadable at samples";
+          delete[] file;
+          return false;
+        }
+        if (cutEnd<cutStart) {
+          logE("cutEnd %d is before cutStart %d. what's going on?",cutEnd,cutStart);
+          lastError="file is corrupt or unreadable at samples";
+          delete[] file;
+          return false;
+        }
+      }
       if (length>0) {
         if (ds.version>0x08) {
           if (ds.version<0x0b) {
@@ -876,6 +902,19 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
             data=new short[length];
             reader.read(data,length*2);
           }
+
+          if (ds.version>0x1a) {
+            if (cutStart!=0 || cutEnd!=length) {
+              // cut data
+              short* newData=new short[cutEnd-cutStart];
+              memcpy(newData,&data[cutStart],(cutEnd-cutStart)*sizeof(short));
+              delete[] data;
+              data=newData;
+              length=cutEnd-cutStart;
+              cutStart=0;
+              cutEnd=length;
+            }
+          }
           
 #ifdef TA_BIG_ENDIAN
           // convert to big-endian
@@ -1742,8 +1781,9 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
     reader.readI();
 
     subSong->timeBase=reader.readC();
-    subSong->speed1=reader.readC();
+    subSong->speeds.len=2;
-    subSong->speed2=reader.readC();
+    subSong->speeds.val[0]=reader.readC();
+    subSong->speeds.val[1]=reader.readC();
     subSong->arpLen=reader.readC();
     subSong->hz=reader.readF();
     subSong->pal=(subSong->hz>=53);
@@ -2231,6 +2271,25 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
       }
     }
 
+    if (ds.version>=139) {
+      subSong->speeds.len=reader.readC();
+      for (int i=0; i<16; i++) {
+        subSong->speeds.val[i]=reader.readC();
+      }
+
+      // grooves
+      unsigned char grooveCount=reader.readC();
+      for (int i=0; i<grooveCount; i++) {
+        DivGroovePattern gp;
+        gp.len=reader.readC();
+        for (int j=0; j<16; j++) {
+          gp.val[j]=reader.readC();
+        }
+
+        ds.grooves.push_back(gp);
+      }
+    }
+
     // read system flags
     if (ds.version>=119) {
       logD("reading chip flags...");
@@ -2289,8 +2348,9 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
 
         subSong=ds.subsong[i+1];
         subSong->timeBase=reader.readC();
-        subSong->speed1=reader.readC();
+        subSong->speeds.len=2;
-        subSong->speed2=reader.readC();
+        subSong->speeds.val[0]=reader.readC();
+        subSong->speeds.val[1]=reader.readC();
         subSong->arpLen=reader.readC();
         subSong->hz=reader.readF();
         subSong->pal=(subSong->hz>=53);
@@ -2338,6 +2398,13 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
         for (int i=0; i<tchans; i++) {
           subSong->chanShortName[i]=reader.readString();
         }
+
+        if (ds.version>=139) {
+          subSong->speeds.len=reader.readC();
+          for (int i=0; i<16; i++) {
+            subSong->speeds.val[i]=reader.readC();
+          }
+        }
       }
     }
 
@@ -2956,7 +3023,6 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
               if (fxVal>0x20 && ds.name!="klisje paa klisje") {
                 writeFxCol(0xf0,fxVal);
               } else {
-                writeFxCol(0x09,fxVal);
                 writeFxCol(0x0f,fxVal);
               }
               break;
@@ -3435,8 +3501,8 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
     ds.subsong[0]->pal=true;
     ds.subsong[0]->customTempo=true;
     ds.subsong[0]->pat[3].effectCols=3;
-    ds.subsong[0]->speed1=3;
+    ds.subsong[0]->speeds.val[0]=3;
-    ds.subsong[0]->speed2=3;
+    ds.subsong[0]->speeds.len=1;
 
     int lastIns[4];
     int lastNote[4];
@@ -3453,10 +3519,8 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
         ds.subsong[0]->orders.ord[j][i]=i;
         DivPattern* p=ds.subsong[0]->pat[j].getPattern(i,true);
         if (j==3 && seq[i].speed) {
-          p->data[0][6]=0x09;
+          p->data[0][6]=0x0f;
           p->data[0][7]=seq[i].speed;
-          p->data[0][8]=0x0f;
-          p->data[0][9]=seq[i].speed;
         }
 
         bool ignoreNext=false;
@@ -4343,8 +4407,9 @@ SafeWriter* DivEngine::saveFur(bool notPrimary) {
   w->writeI(0);
 
   w->writeC(subSong->timeBase);
-  w->writeC(subSong->speed1);
+  // these are for compatibility
-  w->writeC(subSong->speed2);
+  w->writeC(subSong->speeds.val[0]);
+  w->writeC((subSong->speeds.len>=2)?subSong->speeds.val[1]:subSong->speeds.val[0]);
   w->writeC(subSong->arpLen);
   w->writeF(subSong->hz);
   w->writeS(subSong->patLen);
@@ -4531,6 +4596,21 @@ SafeWriter* DivEngine::saveFur(bool notPrimary) {
     w->writeC(0);
   }
 
+  // speeds of first song
+  w->writeC(subSong->speeds.len);
+  for (int i=0; i<16; i++) {
+    w->writeC(subSong->speeds.val[i]);
+  }
+
+  // groove list
+  w->writeC((unsigned char)song.grooves.size());
+  for (const DivGroovePattern& i: song.grooves) {
+    w->writeC(i.len);
+    for (int j=0; j<16; j++) {
+      w->writeC(i.val[j]);
+    }
+  }
+
   blockEndSeek=w->tell();
   w->seek(blockStartSeek,SEEK_SET);
   w->writeI(blockEndSeek-blockStartSeek-4);
@@ -4545,8 +4625,8 @@ SafeWriter* DivEngine::saveFur(bool notPrimary) {
     w->writeI(0);
 
     w->writeC(subSong->timeBase);
-    w->writeC(subSong->speed1);
+    w->writeC(subSong->speeds.val[0]);
-    w->writeC(subSong->speed2);
+    w->writeC((subSong->speeds.len>=2)?subSong->speeds.val[1]:subSong->speeds.val[0]);
     w->writeC(subSong->arpLen);
     w->writeF(subSong->hz);
     w->writeS(subSong->patLen);
@@ -4585,6 +4665,12 @@ SafeWriter* DivEngine::saveFur(bool notPrimary) {
       w->writeString(subSong->chanShortName[i],false);
     }
 
+    // speeds
+    w->writeC(subSong->speeds.len);
+    for (int i=0; i<16; i++) {
+      w->writeC(subSong->speeds.val[i]);
+    }
+
     blockEndSeek=w->tell();
     w->seek(blockStartSeek,SEEK_SET);
     w->writeI(blockEndSeek-blockStartSeek-4);
@@ -4840,8 +4926,8 @@ SafeWriter* DivEngine::saveDMF(unsigned char version) {
   w->writeC(curSubSong->hilightB);
   
   w->writeC(curSubSong->timeBase);
-  w->writeC(curSubSong->speed1);
+  w->writeC(curSubSong->speeds.val[0]);
-  w->writeC(curSubSong->speed2);
+  w->writeC((curSubSong->speeds.len>=2)?curSubSong->speeds.val[1]:curSubSong->speeds.val[0]);
   w->writeC(curSubSong->pal);
   w->writeC(curSubSong->customTempo);
   char customHz[4];
@@ -4865,6 +4951,14 @@ SafeWriter* DivEngine::saveDMF(unsigned char version) {
     addWarning("only the currently selected subsong will be saved");
   }
 
+  if (!song.grooves.empty()) {
+    addWarning("grooves will not be saved");
+  }
+
+  if (curSubSong->speeds.len>2) {
+    addWarning("only the first two speeds will be effective");
+  }
+
   if (curSubSong->virtualTempoD!=curSubSong->virtualTempoN) {
     addWarning(".dmf format does not support virtual tempo");
   }

src/engine/platform/fmshared_OPN.h

@@ -154,6 +154,8 @@ class DivPlatformOPN: public DivPlatformFMBase {
     unsigned int ayDiv;
     unsigned char csmChan;
     unsigned char lfoValue;
+    unsigned short ssgVol;
+    unsigned short fmVol;
     bool extSys, useCombo, fbAllOps;
 
     DivConfig ayFlags;
@@ -172,6 +174,8 @@ class DivPlatformOPN: public DivPlatformFMBase {
       ayDiv(a),
       csmChan(cc),
       lfoValue(0),
+      ssgVol(128),
+      fmVol(256),
       extSys(isExtSys),
       useCombo(false),
       fbAllOps(false) {}

src/engine/platform/genesis.cpp

@@ -30,17 +30,26 @@
 
 void DivYM2612Interface::ymfm_set_timer(uint32_t tnum, int32_t duration_in_clocks) {
   if (tnum==1) {
-    countB=duration_in_clocks;
+    setB=duration_in_clocks;
   } else if (tnum==0) {
-    countA=duration_in_clocks;
+    setA=duration_in_clocks;
   }
-  //logV("ymfm_set_timer(%d,%d)",tnum,duration_in_clocks);
 }
 
 void DivYM2612Interface::clock() {
-  if (countA>=0) {
+  if (setA>=0) {
     countA-=144;
-    if (countA<0) m_engine->engine_timer_expired(0);
+    if (countA<0) {
+      m_engine->engine_timer_expired(0);
+      countA+=setA;
+    }
+  }
+  if (setB>=0) {
+    countB-=144;
+    if (countB<0) {
+      m_engine->engine_timer_expired(1);
+      countB+=setB;
+    }
   }
 }
 

src/engine/platform/genesis.h

@@ -25,6 +25,7 @@
 
 
 class DivYM2612Interface: public ymfm::ymfm_interface {
+  int setA, setB;
   int countA, countB;
 
   public:
@@ -32,8 +33,8 @@ class DivYM2612Interface: public ymfm::ymfm_interface {
     void ymfm_set_timer(uint32_t tnum, int32_t duration_in_clocks);
     DivYM2612Interface():
       ymfm::ymfm_interface(),
-      countA(-1),
+      countA(0),
-      countB(-1) {}
+      countB(0) {}
 };
 
 class DivPlatformGenesis: public DivPlatformOPN {

src/engine/platform/genesisext.cpp

@@ -589,6 +589,7 @@ void DivPlatformGenesisExt::tick(bool sysTick) {
       if (opChan[i].freq>0x3fff) opChan[i].freq=0x3fff;
       immWrite(opChanOffsH[i],opChan[i].freq>>8);
       immWrite(opChanOffsL[i],opChan[i].freq&0xff);
+      opChan[i].freqChanged=false;
     }
     writeMask|=(unsigned char)(opChan[i].mask && opChan[i].active)<<(4+i);
     if (opChan[i].keyOn) {

src/engine/platform/sound/ymfm/ymfm_fm.ipp

@@ -431,6 +431,12 @@ bool fm_operator<RegisterType>::prepare()
 
 	// clock the key state
 	clock_keystate(uint32_t(m_keyon_live != 0));
+        if (m_keyon_live & (1<<KEYON_CSM)) {
+          if (!(m_keyon_live & (1<<KEYON_NORMAL))) {
+            clock_keystate(0);
+          } else {
+          }
+        }
 	m_keyon_live &= ~(1 << KEYON_CSM);
 
 	// we're active until we're quiet after the release

src/engine/platform/tia.cpp

@@ -135,22 +135,27 @@ void DivPlatformTIA::tick(bool sysTick) {
       int bf=chan[i].baseFreq;
       if (!parent->song.oldArpStrategy) {
         if (!chan[i].fixedArp) {
-          bf+=chan[i].arpOff;
+          bf+=chan[i].arpOff<<8;
         }
       }
-      chan[i].freq=dealWithFreq(chan[i].shape,bf,chan[i].pitch+chan[i].pitch2);
+      if (chan[i].fixedArp) {
-      if ((chan[i].shape==4 || chan[i].shape==5) && !(chan[i].baseFreq&0x80000000 && ((chan[i].baseFreq&0x7fffffff)<32))) {
+        chan[i].freq=chan[i].baseNoteOverride&31;
-        if (bf<39*256) {
+      } else {
-          rWrite(0x15+i,6);
+        chan[i].freq=dealWithFreq(chan[i].shape,bf,chan[i].pitch+chan[i].pitch2);
-          chan[i].freq=dealWithFreq(6,bf,chan[i].pitch+chan[i].pitch2);
+        if ((chan[i].shape==4 || chan[i].shape==5) && !(chan[i].baseFreq&0x80000000 && ((chan[i].baseFreq&0x7fffffff)<32))) {
-        } else if (bf<59*256) {
+          if (bf<39*256) {
-          rWrite(0x15+i,12);
+            rWrite(0x15+i,6);
-          chan[i].freq=dealWithFreq(12,bf,chan[i].pitch+chan[i].pitch2);
+            chan[i].freq=dealWithFreq(6,bf,chan[i].pitch+chan[i].pitch2);
-        } else {
+          } else if (bf<59*256) {
-          rWrite(0x15+i,chan[i].shape);
+            rWrite(0x15+i,12);
+            chan[i].freq=dealWithFreq(12,bf,chan[i].pitch+chan[i].pitch2);
+          } else {
+            rWrite(0x15+i,chan[i].shape);
+          }
         }
+        if (chan[i].freq>31) chan[i].freq=31;
       }
-      if (chan[i].freq>31) chan[i].freq=31;
+
       if (chan[i].keyOff) {
         rWrite(0x19+i,0);
       }

src/engine/platform/ym2203.cpp

@@ -210,11 +210,12 @@ void DivPlatformYM2203::acquire_combo(short** buf, size_t len) {
     );
 
     os&=~3;
+    os=(os*fmVol)>>8;
 
     // ymfm part
     fm->generate(&fmout);
 
-    os+=((fmout.data[1]+fmout.data[2]+fmout.data[3])>>1);
+    os+=((fmout.data[1]+fmout.data[2]+fmout.data[3])*ssgVol)>>8;
     if (os<-32768) os=-32768;
     if (os>32767) os=32767;
   
@@ -255,7 +256,7 @@ void DivPlatformYM2203::acquire_ymfm(short** buf, size_t len) {
     
     fm->generate(&fmout);
 
-    os=fmout.data[0]+((fmout.data[1]+fmout.data[2]+fmout.data[3])>>1);
+    os=((fmout.data[0]*fmVol)>>8)+(((fmout.data[1]+fmout.data[2]+fmout.data[3])*ssgVol)>>8);
     if (os<-32768) os=-32768;
     if (os>32767) os=32767;
   
@@ -1074,6 +1075,8 @@ void DivPlatformYM2203::setFlags(const DivConfig& flags) {
   CHECK_CUSTOM_CLOCK;
   noExtMacros=flags.getBool("noExtMacros",false);
   fbAllOps=flags.getBool("fbAllOps",false);
+  ssgVol=flags.getInt("ssgVol",128);
+  fmVol=flags.getInt("fmVol",256);
   rate=fm->sample_rate(chipClock);
   for (int i=0; i<6; i++) {
     oscBuf[i]->rate=rate;

src/engine/platform/ym2608.cpp

@@ -374,15 +374,17 @@ void DivPlatformYM2608::acquire_combo(short** buf, size_t len) {
 
     os[0]>>=1;
     os[1]>>=1;
+    os[0]=(os[0]*fmVol)>>8;
+    os[1]=(os[1]*fmVol)>>8;
 
     // ymfm part
     fm->generate(&fmout);
 
-    os[0]+=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]+=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]+=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]+=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   
@@ -439,11 +441,11 @@ void DivPlatformYM2608::acquire_ymfm(short** buf, size_t len) {
     
     fm->generate(&fmout);
 
-    os[0]=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   
@@ -1603,6 +1605,8 @@ void DivPlatformYM2608::setFlags(const DivConfig& flags) {
   CHECK_CUSTOM_CLOCK;
   noExtMacros=flags.getBool("noExtMacros",false);
   fbAllOps=flags.getBool("fbAllOps",false);
+  ssgVol=flags.getInt("ssgVol",128);
+  fmVol=flags.getInt("fmVol",256);
   rate=fm->sample_rate(chipClock);
   for (int i=0; i<16; i++) {
     oscBuf[i]->rate=rate;

src/engine/platform/ym2610.cpp

@@ -305,15 +305,17 @@ void DivPlatformYM2610::acquire_combo(short** buf, size_t len) {
 
     os[0]>>=1;
     os[1]>>=1;
+    os[0]=(os[0]*fmVol)>>8;
+    os[1]=(os[1]*fmVol)>>8;
 
     // ymfm part
     fm->generate(&fmout);
 
-    os[0]+=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]+=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]+=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]+=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   
@@ -372,11 +374,11 @@ void DivPlatformYM2610::acquire_ymfm(short** buf, size_t len) {
     
     fm->generate(&fmout);
 
-    os[0]=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]+=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]+=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   

src/engine/platform/ym2610b.cpp

@@ -373,15 +373,17 @@ void DivPlatformYM2610B::acquire_combo(short** buf, size_t len) {
 
     os[0]>>=1;
     os[1]>>=1;
+    os[0]=(os[0]*fmVol)>>8;
+    os[1]=(os[1]*fmVol)>>8;
 
     // ymfm part
     fm->generate(&fmout);
 
-    os[0]+=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]+=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]+=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]+=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   
@@ -438,11 +440,11 @@ void DivPlatformYM2610B::acquire_ymfm(short** buf, size_t len) {
     
     fm->generate(&fmout);
 
-    os[0]=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]+=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]+=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   

src/engine/platform/ym2610shared.h

@@ -222,6 +222,8 @@ class DivPlatformYM2610Base: public DivPlatformOPN {
       CHECK_CUSTOM_CLOCK;
       noExtMacros=flags.getBool("noExtMacros",false);
       fbAllOps=flags.getBool("fbAllOps",false);
+      ssgVol=flags.getInt("ssgVol",128);
+      fmVol=flags.getInt("fmVol",256);
       rate=fm->sample_rate(chipClock);
       for (int i=0; i<16; i++) {
         oscBuf[i]->rate=rate;

src/engine/playback.cpp

@@ -412,11 +412,22 @@ void DivEngine::processRow(int i, bool afterDelay) {
       if (effectVal==-1) effectVal=0;
 
       switch (effect) {
-        case 0x09: // speed 1
+        case 0x09: // select groove pattern/speed 1
-          if (effectVal>0) speed1=effectVal;
+          if (song.grooves.empty()) {
+            if (effectVal>0) speeds.val[0]=effectVal;
+          } else {
+            if (effectVal<(short)song.grooves.size()) {
+              speeds=song.grooves[effectVal];
+              curSpeed=0;
+            }
+          }
           break;
-        case 0x0f: // speed 2
+        case 0x0f: // speed 1/speed 2
-          if (effectVal>0) speed2=effectVal;
+          if (speeds.len==2 && song.grooves.empty()) {
+            if (effectVal>0) speeds.val[1]=effectVal;
+          } else {
+            if (effectVal>0) speeds.val[0]=effectVal;
+          }
           break;
         case 0x0b: // change order
           if (changeOrd==-1 || song.jumpTreatment==0) {
@@ -1083,6 +1094,9 @@ void DivEngine::nextRow() {
   }
 
   if (song.brokenSpeedSel) {
+    unsigned char speed2=(speeds.len>=2)?speeds.val[1]:speeds.val[0];
+    unsigned char speed1=speeds.val[0];
+    
     if ((curSubSong->patLen&1) && curOrder&1) {
       ticks=((curRow&1)?speed2:speed1)*(curSubSong->timeBase+1);
       nextSpeed=(curRow&1)?speed1:speed2;
@@ -1091,14 +1105,10 @@ void DivEngine::nextRow() {
       nextSpeed=(curRow&1)?speed2:speed1;
     }
   } else {
-    if (speedAB) {
+    ticks=speeds.val[curSpeed]*(curSubSong->timeBase+1);
-      ticks=speed2*(curSubSong->timeBase+1);
+    curSpeed++;
-      nextSpeed=speed1;
+    if (curSpeed>=speeds.len) curSpeed=0;
-    } else {
+    nextSpeed=speeds.val[curSpeed];
-      ticks=speed1*(curSubSong->timeBase+1);
-      nextSpeed=speed2;
-    }
-    speedAB=!speedAB;
   }
 
   // post row details

src/engine/song.h

@@ -127,10 +127,20 @@ enum DivSystem {
   DIV_SYSTEM_YM2608_CSM
 };
 
+struct DivGroovePattern {
+  unsigned char val[16];
+  unsigned char len;
+  DivGroovePattern():
+    len(1) {
+      memset(val,6,16);
+    }
+};
+
 struct DivSubSong {
   String name, notes;
   unsigned char hilightA, hilightB;
-  unsigned char timeBase, speed1, speed2, arpLen;
+  unsigned char timeBase, arpLen;
+  DivGroovePattern speeds;
   short virtualTempoN, virtualTempoD;
   bool pal;
   bool customTempo;
@@ -153,8 +163,6 @@ struct DivSubSong {
     hilightA(4),
     hilightB(16),
     timeBase(0),
-    speed1(6),
-    speed2(6),
     arpLen(1),
     virtualTempoN(150),
     virtualTempoD(150),
@@ -338,6 +346,7 @@ struct DivSong {
 
   std::vector<DivSubSong*> subsong;
   std::vector<unsigned int> patchbay;
+  std::vector<DivGroovePattern> grooves;
 
   DivInstrument nullIns, nullInsOPLL, nullInsOPL, nullInsOPLDrums, nullInsQSound;
   DivWavetable nullWave;

src/engine/sysDef.cpp

@@ -23,9 +23,9 @@
 #include "song.h"
 #include "../ta-log.h"
 
-DivSysDef* DivEngine::sysDefs[256];
+DivSysDef* DivEngine::sysDefs[DIV_MAX_CHIP_DEFS];
-DivSystem DivEngine::sysFileMapFur[256];
+DivSystem DivEngine::sysFileMapFur[DIV_MAX_CHIP_DEFS];
-DivSystem DivEngine::sysFileMapDMF[256];
+DivSystem DivEngine::sysFileMapDMF[DIV_MAX_CHIP_DEFS];
 
 DivSystem DivEngine::systemFromFileFur(unsigned char val) {
   return sysFileMapFur[val];
@@ -1831,7 +1831,7 @@ void DivEngine::registerSystems() {
     {DIV_INS_STD, DIV_INS_STD, DIV_INS_STD, DIV_INS_STD, DIV_INS_STD, DIV_INS_STD, DIV_INS_STD, DIV_INS_STD}
   );
 
-  for (int i=0; i<256; i++) {
+  for (int i=0; i<DIV_MAX_CHIP_DEFS; i++) {
     if (sysDefs[i]==NULL) continue;
     if (sysDefs[i]->id!=0) {
       sysFileMapFur[sysDefs[i]->id]=(DivSystem)i;

src/gui/doAction.cpp

@@ -265,6 +265,9 @@ void FurnaceGUI::doAction(int what) {
     case GUI_ACTION_WINDOW_FIND:
       nextWindow=GUI_WINDOW_FIND;
       break;
+    case GUI_ACTION_WINDOW_GROOVES:
+      nextWindow=GUI_WINDOW_GROOVES;
+      break;
     
     case GUI_ACTION_COLLAPSE_WINDOW:
       collapseWindow=true;
@@ -358,6 +361,9 @@ void FurnaceGUI::doAction(int what) {
         case GUI_WINDOW_FIND:
           findOpen=false;
           break;
+        case GUI_WINDOW_GROOVES:
+          groovesOpen=false;
+          break;
         default:
           break;
       }

src/gui/grooves.cpp

@@ -0,0 +1,154 @@
+/**
+ * Furnace Tracker - multi-system chiptune tracker
+ * Copyright (C) 2021-2023 tildearrow and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "gui.h"
+#include "imgui.h"
+#include "misc/cpp/imgui_stdlib.h"
+#include "IconsFontAwesome4.h"
+#include <fmt/printf.h>
+#include "intConst.h"
+
+void FurnaceGUI::drawGrooves() {
+  if (nextWindow==GUI_WINDOW_GROOVES) {
+    groovesOpen=true;
+    ImGui::SetNextWindowFocus();
+    nextWindow=GUI_WINDOW_NOTHING;
+  }
+  if (!groovesOpen) return;
+  ImGui::SetNextWindowSizeConstraints(ImVec2(64.0f*dpiScale,32.0f*dpiScale),ImVec2(canvasW,canvasH));
+  if (ImGui::Begin("Grooves",&groovesOpen,globalWinFlags)) {
+    int delGroove=-1;
+
+    ImGui::Text("use effect 09xx to select a groove pattern.");
+    if (!e->song.grooves.empty()) if (ImGui::BeginTable("GrooveList",3,ImGuiTableFlags_Borders)) {
+      ImGui::TableSetupColumn("c0",ImGuiTableColumnFlags_WidthFixed);
+      ImGui::TableSetupColumn("c1",ImGuiTableColumnFlags_WidthStretch);
+      ImGui::TableSetupColumn("c2",ImGuiTableColumnFlags_WidthFixed);
+
+      ImGui::TableNextRow(ImGuiTableRowFlags_Headers);
+      ImGui::TableNextColumn();
+      ImGui::Text("#");
+      ImGui::TableNextColumn();
+      ImGui::Text("pattern");
+      ImGui::TableNextColumn();
+      ImGui::Text("remove");
+
+      int index=0;
+      for (DivGroovePattern& i: e->song.grooves) {
+        ImGui::TableNextRow();
+        ImGui::TableNextColumn();
+        ImGui::PushFont(patFont);
+        ImGui::Text("%.2X",index);
+        ImGui::PopFont();
+
+        ImGui::TableNextColumn();
+
+        String grooveStr;
+
+        if (curGroove==index) {
+          int intVersion[256];
+          unsigned char intVersionLen=i.len;
+          unsigned char ignoredLoop=0;
+          unsigned char ignoredRel=0;
+          memset(intVersion,0,sizeof(int));
+          for (int j=0; j<16; j++) {
+            intVersion[j]=i.val[j];
+          }
+          if (intVersionLen>16) intVersionLen=16;
+          grooveStr=fmt::sprintf("##_GRI%d",index);
+          bool wantedFocus=wantGrooveListFocus;
+          if (wantGrooveListFocus) {
+            wantGrooveListFocus=false;
+            ImGui::SetItemDefaultFocus();
+            ImGui::SetKeyboardFocusHere();
+          }
+          ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
+          if (ImGui::InputText(grooveStr.c_str(),&grooveListString)) {
+            decodeMMLStr(grooveListString,intVersion,intVersionLen,ignoredLoop,1,255,ignoredRel);
+            if (intVersionLen<1) {
+              intVersionLen=1;
+              intVersion[0]=6;
+            }
+            if (intVersionLen>16) intVersionLen=16;
+            e->lockEngine([&i,intVersion,intVersionLen]() {
+              i.len=intVersionLen;
+              for (int j=0; j<16; j++) {
+                i.val[j]=intVersion[j];
+              }
+            });
+            MARK_MODIFIED;
+          }
+          if (!ImGui::IsItemActive() && !wantedFocus) {
+            curGroove=-1;
+            //encodeMMLStr(grooveListString,intVersion,intVersionLen,-1,-1,false);
+          }
+        } else {
+          String grooveStr;
+
+          for (int j=0; j<i.len; j++) {
+            if (j>0) {
+              grooveStr+=' ';
+            }
+            grooveStr+=fmt::sprintf("%d",(int)i.val[j]);
+          }
+
+          size_t groovePrevLen=grooveStr.size();
+
+          grooveStr+=fmt::sprintf("##_GR%d",index);
+
+          if (ImGui::Selectable(grooveStr.c_str(),false)) {
+            curGroove=index;
+            grooveListString=grooveStr.substr(0,groovePrevLen);
+            wantGrooveListFocus=true;
+          }
+        }
+
+        ImGui::TableNextColumn();
+        String grooveID=fmt::sprintf(ICON_FA_TIMES "##GRR%d",index);
+        if (ImGui::Button(grooveID.c_str())) {
+          delGroove=index;
+        }
+
+        index++;
+      }
+
+      ImGui::EndTable();
+    }
+
+    if (delGroove>=0) {
+      e->lockEngine([this,delGroove]() {
+        e->song.grooves.erase(e->song.grooves.begin()+delGroove);
+      });
+      MARK_MODIFIED;
+    }
+
+    if (ImGui::Button(ICON_FA_PLUS "##AddGroove")) {
+      e->lockEngine([this]() {
+        e->song.grooves.push_back(DivGroovePattern());
+      });
+      MARK_MODIFIED;
+    }
+  }
+  if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows)) {
+    curWindow=GUI_WINDOW_GROOVES;
+  } else {
+    curGroove=-1;
+  }
+  ImGui::End();
+}

src/gui/gui.cpp

@@ -988,15 +988,19 @@ void FurnaceGUI::prepareLayout() {
   fclose(check);
 }
 
-float FurnaceGUI::calcBPM(int s1, int s2, float hz, int vN, int vD) {
+float FurnaceGUI::calcBPM(const DivGroovePattern& speeds, float hz, int vN, int vD) {
   float hl=e->curSubSong->hilightA;
   if (hl<=0.0f) hl=4.0f;
   float timeBase=e->curSubSong->timeBase+1;
-  float speedSum=s1+s2;
+  float speedSum=0;
+  for (int i=0; i<MIN(16,speeds.len); i++) {
+    speedSum+=speeds.val[i];
+  }
+  speedSum/=MAX(1,speeds.len);
   if (timeBase<1.0f) timeBase=1.0f;
   if (speedSum<1.0f) speedSum=1.0f;
   if (vD<1) vD=1;
-  return (120.0f*hz/(timeBase*hl*speedSum))*(float)vN/(float)vD;
+  return (60.0f*hz/(timeBase*hl*speedSum))*(float)vN/(float)vD;
 }
 
 void FurnaceGUI::play(int row) {
@@ -3740,6 +3744,7 @@ bool FurnaceGUI::loop() {
         if (ImGui::MenuItem("orders",BIND_FOR(GUI_ACTION_WINDOW_ORDERS),ordersOpen)) ordersOpen=!ordersOpen;
         if (ImGui::MenuItem("pattern",BIND_FOR(GUI_ACTION_WINDOW_PATTERN),patternOpen)) patternOpen=!patternOpen;
         if (ImGui::MenuItem("mixer",BIND_FOR(GUI_ACTION_WINDOW_MIXER),mixerOpen)) mixerOpen=!mixerOpen;
+        if (ImGui::MenuItem("grooves",BIND_FOR(GUI_ACTION_WINDOW_GROOVES),groovesOpen)) groovesOpen=!groovesOpen;
         if (ImGui::MenuItem("channels",BIND_FOR(GUI_ACTION_WINDOW_CHANNELS),channelsOpen)) channelsOpen=!channelsOpen;
         if (ImGui::MenuItem("pattern manager",BIND_FOR(GUI_ACTION_WINDOW_PAT_MANAGER),patManagerOpen)) patManagerOpen=!patManagerOpen;
         if (ImGui::MenuItem("chip manager",BIND_FOR(GUI_ACTION_WINDOW_SYS_MANAGER),sysManagerOpen)) sysManagerOpen=!sysManagerOpen;
@@ -3778,7 +3783,21 @@ bool FurnaceGUI::loop() {
       if (e->isPlaying()) {
         int totalTicks=e->getTotalTicks();
         int totalSeconds=e->getTotalSeconds();
-        ImGui::Text("| Speed %d:%d @ %gHz (%g BPM) | Order %d/%d | Row %d/%d | %d:%.2d:%.2d.%.2d",e->getSpeed1(),e->getSpeed2(),e->getCurHz(),calcBPM(e->getSpeed1(),e->getSpeed2(),e->getCurHz(),e->curSubSong->virtualTempoN,e->curSubSong->virtualTempoD),e->getOrder(),e->curSubSong->ordersLen,e->getRow(),e->curSubSong->patLen,totalSeconds/3600,(totalSeconds/60)%60,totalSeconds%60,totalTicks/10000);
+
+        String info;
+
+        DivGroovePattern gp=e->getSpeeds();
+        if (gp.len==2) {
+          info=fmt::sprintf("| Speed %d:%d",gp.val[0],gp.val[1]);
+        } else if (gp.len==1) {
+          info=fmt::sprintf("| Speed %d",gp.val[0]);
+        } else {
+          info="| Groove";
+        }
+
+        info+=fmt::sprintf(" @ %gHz (%g BPM) | Order %d/%d | Row %d/%d | %d:%.2d:%.2d.%.2d",e->getCurHz(),calcBPM(e->getSpeeds(),e->getCurHz(),e->curSubSong->virtualTempoN,e->curSubSong->virtualTempoD),e->getOrder(),e->curSubSong->ordersLen,e->getRow(),e->curSubSong->patLen,totalSeconds/3600,(totalSeconds/60)%60,totalSeconds%60,totalTicks/10000);
+
+        ImGui::TextUnformatted(info.c_str());
       } else {
         bool hasInfo=false;
         String info;
@@ -3917,6 +3936,7 @@ bool FurnaceGUI::loop() {
       drawPattern();
       drawEditControls();
       drawSpeed();
+      drawGrooves();
       drawSongInfo();
       drawOrders();
       drawSampleList();
@@ -5248,6 +5268,7 @@ bool FurnaceGUI::init() {
   sysManagerOpen=e->getConfBool("sysManagerOpen",false);
   clockOpen=e->getConfBool("clockOpen",false);
   speedOpen=e->getConfBool("speedOpen",true);
+  groovesOpen=e->getConfBool("groovesOpen",false);
   regViewOpen=e->getConfBool("regViewOpen",false);
   logOpen=e->getConfBool("logOpen",false);
   effectListOpen=e->getConfBool("effectListOpen",false);
@@ -5467,10 +5488,32 @@ bool FurnaceGUI::init() {
   }
 #endif
 
+  int numDrivers=SDL_GetNumRenderDrivers();
+  if (numDrivers<0) {
+    logW("could not list render drivers! %s",SDL_GetError());
+  } else {
+    SDL_RendererInfo ri;
+    for (int i=0; i<numDrivers; i++) {
+      int r=SDL_GetRenderDriverInfo(i,&ri);
+      if (r!=0) continue;
+      availRenderDrivers.push_back(String(ri.name));
+    }
+  }
+
+  if (!settings.renderDriver.empty()) {
+    SDL_SetHint(SDL_HINT_RENDER_DRIVER,settings.renderDriver.c_str());
+  }
+
   sdlRend=SDL_CreateRenderer(sdlWin,-1,SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC|SDL_RENDERER_TARGETTEXTURE);
 
   if (sdlRend==NULL) {
     lastError=fmt::sprintf("could not init renderer! %s",SDL_GetError());
+    if (!settings.renderDriver.empty()) {
+      settings.renderDriver="";
+      e->setConf("renderDriver","");
+      e->saveConf();
+      lastError=fmt::sprintf("\r\nthe render driver has been set to a safe value. please restart Furnace.");
+    }
     return false;
   }
 
@@ -5623,6 +5666,7 @@ void FurnaceGUI::commitState() {
   e->setConf("sysManagerOpen",sysManagerOpen);
   e->setConf("clockOpen",clockOpen);
   e->setConf("speedOpen",speedOpen);
+  e->setConf("groovesOpen",groovesOpen);
   e->setConf("regViewOpen",regViewOpen);
   e->setConf("logOpen",logOpen);
   e->setConf("effectListOpen",effectListOpen);
@@ -5835,6 +5879,7 @@ FurnaceGUI::FurnaceGUI():
   dragDestinationY(0),
   oldBeat(-1),
   oldBar(-1),
+  curGroove(-1),
   soloTimeout(0.0f),
   exportFadeOut(5.0),
   editControlsOpen(true),
@@ -5870,6 +5915,7 @@ FurnaceGUI::FurnaceGUI():
   sysManagerOpen(false),
   clockOpen(false),
   speedOpen(true),
+  groovesOpen(false),
   clockShowReal(true),
   clockShowRow(true),
   clockShowBeat(true),
@@ -5898,10 +5944,12 @@ FurnaceGUI::FurnaceGUI():
   latchNibble(false),
   nonLatchNibble(false),
   keepLoopAlive(false),
+  keepGrooveAlive(false),
   orderScrollLocked(false),
   orderScrollTolerance(false),
   dragMobileMenu(false),
   dragMobileEditButton(false),
+  wantGrooveListFocus(false),
   curWindow(GUI_WINDOW_NOTHING),
   nextWindow(GUI_WINDOW_NOTHING),
   curWindowLast(GUI_WINDOW_NOTHING),

src/gui/gui.h

@@ -113,6 +113,7 @@ enum FurnaceGUIColors {
 
   GUI_COLOR_ORDER_ROW_INDEX,
   GUI_COLOR_ORDER_ACTIVE,
+  GUI_COLOR_ORDER_SELECTED,
   GUI_COLOR_ORDER_SIMILAR,
   GUI_COLOR_ORDER_INACTIVE,
 
@@ -321,6 +322,7 @@ enum FurnaceGUIWindows {
   GUI_WINDOW_SUBSONGS,
   GUI_WINDOW_FIND,
   GUI_WINDOW_CLOCK,
+  GUI_WINDOW_GROOVES,
   GUI_WINDOW_SPOILER
 };
 
@@ -466,6 +468,7 @@ enum FurnaceGUIActions {
   GUI_ACTION_WINDOW_SUBSONGS,
   GUI_ACTION_WINDOW_FIND,
   GUI_ACTION_WINDOW_CLOCK,
+  GUI_ACTION_WINDOW_GROOVES,
 
   GUI_ACTION_COLLAPSE_WINDOW,
   GUI_ACTION_CLOSE_WINDOW,
@@ -1097,13 +1100,13 @@ class FurnaceGUI {
   String workingDirVGMExport, workingDirZSMExport, workingDirROMExport, workingDirFont, workingDirColors, workingDirKeybinds;
   String workingDirLayout, workingDirROM, workingDirTest;
   String mmlString[32];
-  String mmlStringW, mmlStringSNES;
+  String mmlStringW, mmlStringSNES, grooveString, grooveListString;
 
   std::vector<DivSystem> sysSearchResults;
   std::vector<FurnaceGUISysDef> newSongSearchResults;
   std::deque<String> recentFile;
   std::vector<DivInstrumentType> makeInsTypeList;
-
+  std::vector<String> availRenderDrivers;
 
   bool quit, warnQuit, willCommit, edit, modified, displayError, displayExporting, vgmExportLoop, zsmExportLoop, vgmExportPatternHints;
   bool vgmExportDirectStream, displayInsTypeList;
@@ -1305,6 +1308,7 @@ class FurnaceGUI {
     String midiInDevice;
     String midiOutDevice;
     String c163Name;
+    String renderDriver;
     String initialSysName;
     String noteOffLabel;
     String noteRelLabel;
@@ -1441,6 +1445,7 @@ class FurnaceGUI {
       midiInDevice(""),
       midiOutDevice(""),
       c163Name(""),
+      renderDriver(""),
       initialSysName("Sega Genesis/Mega Drive"),
       noteOffLabel("OFF"),
       noteRelLabel("==="),
@@ -1456,6 +1461,7 @@ class FurnaceGUI {
   int curIns, curWave, curSample, curOctave, curOrder, prevIns, oldRow, oldOrder, oldOrder1, editStep, exportLoops, soloChan,orderEditMode, orderCursor;
   int loopOrder, loopRow, loopEnd, isClipping, extraChannelButtons, patNameTarget, newSongCategory, latchTarget;
   int wheelX, wheelY, dragSourceX, dragSourceXFine, dragSourceY, dragDestinationX, dragDestinationXFine, dragDestinationY, oldBeat, oldBar;
+  int curGroove;
   float soloTimeout;
 
   double exportFadeOut;
@@ -1465,6 +1471,7 @@ class FurnaceGUI {
   bool mixerOpen, debugOpen, inspectorOpen, oscOpen, volMeterOpen, statsOpen, compatFlagsOpen;
   bool pianoOpen, notesOpen, channelsOpen, regViewOpen, logOpen, effectListOpen, chanOscOpen;
   bool subSongsOpen, findOpen, spoilerOpen, patManagerOpen, sysManagerOpen, clockOpen, speedOpen;
+  bool groovesOpen;
 
   bool clockShowReal, clockShowRow, clockShowBeat, clockShowMetro, clockShowTime;
   float clockMetroTick[16];
@@ -1472,7 +1479,7 @@ class FurnaceGUI {
   SelectionPoint selStart, selEnd, cursor, cursorDrag, dragStart, dragEnd;
   bool selecting, selectingFull, dragging, curNibble, orderNibble, followOrders, followPattern, changeAllOrders, mobileUI;
   bool collapseWindow, demandScrollX, fancyPattern, wantPatName, firstFrame, tempoView, waveHex, waveSigned, waveGenVisible, lockLayout, editOptsVisible, latchNibble, nonLatchNibble;
-  bool keepLoopAlive, orderScrollLocked, orderScrollTolerance, dragMobileMenu, dragMobileEditButton;
+  bool keepLoopAlive, keepGrooveAlive, orderScrollLocked, orderScrollTolerance, dragMobileMenu, dragMobileEditButton, wantGrooveListFocus;
   FurnaceGUIWindows curWindow, nextWindow, curWindowLast;
   std::atomic<FurnaceGUIWindows> curWindowThreadSafe;
   float peak[DIV_MAX_OUTPUTS];
@@ -1801,7 +1808,7 @@ class FurnaceGUI {
   void pushAccentColors(const ImVec4& one, const ImVec4& two, const ImVec4& border, const ImVec4& borderShadow);
   void popAccentColors();
 
-  float calcBPM(int s1, int s2, float hz, int vN, int vD);
+  float calcBPM(const DivGroovePattern& speeds, float hz, int vN, int vD);
 
   void patternRow(int i, bool isPlaying, float lineHeight, int chans, int ord, const DivPattern** patCache, bool inhibitSel);
 
@@ -1821,6 +1828,7 @@ class FurnaceGUI {
   void drawEditControls();
   void drawSongInfo(bool asChild=false);
   void drawSpeed(bool asChild=false);
+  void drawGrooves();
   void drawOrders();
   void drawPattern();
   void drawInsList(bool asChild=false);

src/gui/guiConst.cpp

@@ -520,6 +520,7 @@ const FurnaceGUIActionDef guiActions[GUI_ACTION_MAX]={
   D("WINDOW_SUBSONGS", "Subsongs", 0),
   D("WINDOW_FIND", "Find/Replace", FURKMOD_CMD|SDLK_f),
   D("WINDOW_CLOCK", "Clock", 0),
+  D("WINDOW_GROOVES", "Grooves", 0),
 
   D("COLLAPSE_WINDOW", "Collapse/expand current window", 0),
   D("CLOSE_WINDOW", "Close current window", FURKMOD_SHIFT|SDLK_ESCAPE),
@@ -741,6 +742,7 @@ const FurnaceGUIColorDef guiColors[GUI_COLOR_MAX]={
 
   D(GUI_COLOR_ORDER_ROW_INDEX,"",ImVec4(0.5f,0.8f,1.0f,1.0f)),
   D(GUI_COLOR_ORDER_ACTIVE,"",ImVec4(0.4f,0.7f,1.0f,0.25f)),
+  D(GUI_COLOR_ORDER_SELECTED,"",ImVec4(0.6f,0.8f,1.0f,0.75f)),
   D(GUI_COLOR_ORDER_SIMILAR,"",ImVec4(0.5f,1.0f,1.0f,1.0f)),
   D(GUI_COLOR_ORDER_INACTIVE,"",ImVec4(1.0f,1.0f,1.0f,1.0f)),
 

src/gui/orders.cpp

@@ -19,8 +19,10 @@
 
 #include "gui.h"
 #include <fmt/printf.h>
+#include <imgui.h>
 #include "IconsFontAwesome4.h"
 #include "imgui_internal.h"
+#include "../ta-log.h"
 
 void FurnaceGUI::drawMobileOrderSel() {
   if (!portrait) return;
@@ -129,6 +131,7 @@ void FurnaceGUI::drawOrders() {
         }
       }
       ImGui::TableNextRow(0,lineHeight);
+      ImVec2 ra=ImGui::GetContentRegionAvail();
       ImGui::TableNextColumn();
       ImGui::PushStyleColor(ImGuiCol_Text,uiColors[GUI_COLOR_ORDER_ROW_INDEX]);
       for (int i=0; i<e->getTotalChannelCount(); i++) {
@@ -141,6 +144,14 @@ void FurnaceGUI::drawOrders() {
         ImGui::TableNextRow(0,lineHeight);
         if (oldOrder1==i) ImGui::TableSetBgColor(ImGuiTableBgTarget_RowBg0,ImGui::GetColorU32(uiColors[GUI_COLOR_ORDER_ACTIVE]));
         ImGui::TableNextColumn();
+        if ((!followPattern && curOrder==i) || (followPattern && oldOrder1==i)) {
+          // draw a border
+          ImDrawList* dl=ImGui::GetWindowDrawList();
+          ImVec2 rBegin=ImGui::GetCursorScreenPos();
+          rBegin.y-=ImGui::GetStyle().CellPadding.y;
+          ImVec2 rEnd=ImVec2(rBegin.x+ra.x,rBegin.y+lineHeight);
+          dl->AddRect(rBegin,rEnd,ImGui::GetColorU32(uiColors[GUI_COLOR_ORDER_SELECTED]),2.0f*dpiScale);
+        }
         ImGui::PushStyleColor(ImGuiCol_Text,uiColors[GUI_COLOR_ORDER_ROW_INDEX]);
         bool highlightLoop=(i>=loopOrder && i<=loopEnd);
         if (highlightLoop) ImGui::TableSetBgColor(ImGuiTableBgTarget_CellBg,ImGui::GetColorU32(uiColors[GUI_COLOR_SONG_LOOP]));

src/gui/settings.cpp

@@ -1207,6 +1207,18 @@ void FurnaceGUI::drawSettings() {
         ImVec2 settingsViewSize=ImGui::GetContentRegionAvail();
         settingsViewSize.y-=ImGui::GetFrameHeight()+ImGui::GetStyle().WindowPadding.y;
         if (ImGui::BeginChild("SettingsView",settingsViewSize)) {
+          if (ImGui::BeginCombo("Render driver",settings.renderDriver.empty()?"Automatic":settings.renderDriver.c_str())) {
+            if (ImGui::Selectable("Automatic",settings.renderDriver.empty())) {
+              settings.renderDriver="";
+            }
+            for (String& i: availRenderDrivers) {
+              if (ImGui::Selectable(i.c_str(),i==settings.renderDriver)) {
+                settings.renderDriver=i;
+              }
+            }
+            ImGui::EndCombo();
+          }
+
           bool dpiScaleAuto=(settings.dpiScale<0.5f);
           if (ImGui::Checkbox("Automatic UI scaling factor",&dpiScaleAuto)) {
             if (dpiScaleAuto) {
@@ -1799,7 +1811,8 @@ void FurnaceGUI::drawSettings() {
             }
             if (ImGui::TreeNode("Orders")) {
               UI_COLOR_CONFIG(GUI_COLOR_ORDER_ROW_INDEX,"Order number");
-              UI_COLOR_CONFIG(GUI_COLOR_ORDER_ACTIVE,"Current order background");
+              UI_COLOR_CONFIG(GUI_COLOR_ORDER_ACTIVE,"Playing order background");
+              UI_COLOR_CONFIG(GUI_COLOR_ORDER_SELECTED,"Selected order");
               UI_COLOR_CONFIG(GUI_COLOR_ORDER_SIMILAR,"Similar patterns");
               UI_COLOR_CONFIG(GUI_COLOR_ORDER_INACTIVE,"Inactive patterns");
               ImGui::TreePop();
@@ -2447,6 +2460,7 @@ void FurnaceGUI::syncSettings() {
   settings.midiInDevice=e->getConfString("midiInDevice","");
   settings.midiOutDevice=e->getConfString("midiOutDevice","");
   settings.c163Name=e->getConfString("c163Name",DIV_C163_DEFAULT_NAME);
+  settings.renderDriver=e->getConfString("renderDriver","");
   settings.audioQuality=e->getConfInt("audioQuality",0);
   settings.audioBufSize=e->getConfInt("audioBufSize",1024);
   settings.audioRate=e->getConfInt("audioRate",44100);
@@ -2762,6 +2776,7 @@ void FurnaceGUI::commitSettings() {
   e->setConf("midiInDevice",settings.midiInDevice);
   e->setConf("midiOutDevice",settings.midiOutDevice);
   e->setConf("c163Name",settings.c163Name);
+  e->setConf("renderDriver",settings.renderDriver);
   e->setConf("audioQuality",settings.audioQuality);
   e->setConf("audioBufSize",settings.audioBufSize);
   e->setConf("audioRate",settings.audioRate);

src/gui/speed.cpp

@@ -31,19 +31,26 @@ void FurnaceGUI::drawSpeed(bool asChild) {
   if (!speedOpen && !asChild) return;
   bool began=asChild?ImGui::BeginChild("Speed"):ImGui::Begin("Speed",&speedOpen,globalWinFlags);
   if (began) {
-    if (ImGui::BeginTable("Props",3,ImGuiTableFlags_SizingStretchProp)) {
+    if (ImGui::BeginTable("Props",2,ImGuiTableFlags_SizingStretchProp)) {
       ImGui::TableSetupColumn("c0",ImGuiTableColumnFlags_WidthFixed,0.0);
       ImGui::TableSetupColumn("c1",ImGuiTableColumnFlags_WidthStretch,0.0);
-      ImGui::TableSetupColumn("c2",ImGuiTableColumnFlags_WidthStretch,0.0);
 
       ImGui::TableNextRow();
       ImGui::TableNextColumn();
-      if (ImGui::Selectable(tempoView?"Base Tempo##TempoOrHz":"Tick Rate##TempoOrHz")) {
+      if (ImGui::SmallButton(tempoView?"Base Tempo##TempoOrHz":"Tick Rate##TempoOrHz")) {
         tempoView=!tempoView;
       }
+      if (ImGui::IsItemHovered()) {
+        if (tempoView) {
+          ImGui::SetTooltip("click to display tick rate");
+        } else {
+          ImGui::SetTooltip("click to display base tempo");
+        }
+      }
       ImGui::TableNextColumn();
       float avail=ImGui::GetContentRegionAvail().x;
-      ImGui::SetNextItemWidth(avail);
+      float halfAvail=(avail-ImGui::GetStyle().ItemSpacing.x)*0.5;
+      ImGui::SetNextItemWidth(halfAvail);
       float setHz=tempoView?e->curSubSong->hz*2.5:e->curSubSong->hz;
       if (ImGui::InputFloat("##Rate",&setHz,1.0f,1.0f,"%g")) { MARK_MODIFIED
         if (tempoView) setHz/=2.5;
@@ -52,40 +59,112 @@ void FurnaceGUI::drawSpeed(bool asChild) {
         e->setSongRate(setHz,setHz<52);
       }
       if (tempoView) {
-        ImGui::TableNextColumn();
+        ImGui::SameLine();
         ImGui::Text("= %gHz",e->curSubSong->hz);
       } else {
         if (e->curSubSong->hz>=49.98 && e->curSubSong->hz<=50.02) {
-          ImGui::TableNextColumn();
+          ImGui::SameLine();
           ImGui::Text("PAL");
         }
         if (e->curSubSong->hz>=59.9 && e->curSubSong->hz<=60.11) {
-          ImGui::TableNextColumn();
+          ImGui::SameLine();
           ImGui::Text("NTSC");
         }
       }
 
       ImGui::TableNextRow();
       ImGui::TableNextColumn();
-      ImGui::Text("Speed");
+      if (keepGrooveAlive || e->curSubSong->speeds.len>2) {
-      ImGui::TableNextColumn();
+        if (ImGui::SmallButton("Groove")) {
-      ImGui::SetNextItemWidth(avail);
+          e->lockEngine([this]() {
-      if (ImGui::InputScalar("##Speed1",ImGuiDataType_U8,&e->curSubSong->speed1,&_ONE,&_THREE)) { MARK_MODIFIED
+            e->curSubSong->speeds.len=1;
-        if (e->curSubSong->speed1<1) e->curSubSong->speed1=1;
+          });
-        if (e->isPlaying()) play();
+          if (e->isPlaying()) play();
+        }
+        if (ImGui::IsItemHovered()) {
+          ImGui::SetTooltip("click for one speed");
+        }
+      } else if (e->curSubSong->speeds.len>1) {
+        if (ImGui::SmallButton("Speeds")) {
+          e->lockEngine([this]() {
+            e->curSubSong->speeds.len=4;
+            e->curSubSong->speeds.val[2]=e->curSubSong->speeds.val[0];
+            e->curSubSong->speeds.val[3]=e->curSubSong->speeds.val[1];
+          });
+          if (e->isPlaying()) play();
+        }
+        if (ImGui::IsItemHovered()) {
+          ImGui::SetTooltip("click for groove pattern");
+        }
+      } else {
+        if (ImGui::SmallButton("Speed")) {
+          e->lockEngine([this]() {
+            e->curSubSong->speeds.len=2;
+            e->curSubSong->speeds.val[1]=e->curSubSong->speeds.val[0];
+          });
+          if (e->isPlaying()) play();
+        }
+        if (ImGui::IsItemHovered()) {
+          ImGui::SetTooltip("click for two (alternating) speeds");
+        }
       }
       ImGui::TableNextColumn();
-      ImGui::SetNextItemWidth(avail);
+      if (keepGrooveAlive || e->curSubSong->speeds.len>2) {
-      if (ImGui::InputScalar("##Speed2",ImGuiDataType_U8,&e->curSubSong->speed2,&_ONE,&_THREE)) { MARK_MODIFIED
+        int intVersion[256];
-        if (e->curSubSong->speed2<1) e->curSubSong->speed2=1;
+        unsigned char intVersionLen=e->curSubSong->speeds.len;
-        if (e->isPlaying()) play();
+        unsigned char ignoredLoop=0;
+        unsigned char ignoredRel=0;
+        memset(intVersion,0,sizeof(int));
+        for (int i=0; i<16; i++) {
+          intVersion[i]=e->curSubSong->speeds.val[i];
+        }
+        if (intVersionLen>16) intVersionLen=16;
+
+        keepGrooveAlive=false;
+
+        ImGui::SetNextItemWidth(avail);
+        if (ImGui::InputText("##SpeedG",&grooveString)) {
+          decodeMMLStr(grooveString,intVersion,intVersionLen,ignoredLoop,1,255,ignoredRel);
+          if (intVersionLen<1) {
+            intVersionLen=1;
+            intVersion[0]=6;
+          }
+          if (intVersionLen>16) intVersionLen=16;
+          e->lockEngine([this,intVersion,intVersionLen]() {
+            e->curSubSong->speeds.len=intVersionLen;
+            for (int i=0; i<16; i++) {
+              e->curSubSong->speeds.val[i]=intVersion[i];
+            }
+          });
+          if (e->isPlaying()) play();
+          MARK_MODIFIED;
+        }
+        if (!ImGui::IsItemActive()) {
+          encodeMMLStr(grooveString,intVersion,intVersionLen,-1,-1,false);
+        } else {
+          keepGrooveAlive=true;
+        }
+      } else {
+        ImGui::SetNextItemWidth(halfAvail);
+        if (ImGui::InputScalar("##Speed1",ImGuiDataType_U8,&e->curSubSong->speeds.val[0],&_ONE,&_THREE)) { MARK_MODIFIED
+          if (e->curSubSong->speeds.val[0]<1) e->curSubSong->speeds.val[0]=1;
+          if (e->isPlaying()) play();
+        }
+        if (e->curSubSong->speeds.len>1) {
+          ImGui::SameLine();
+          ImGui::SetNextItemWidth(halfAvail);
+          if (ImGui::InputScalar("##Speed2",ImGuiDataType_U8,&e->curSubSong->speeds.val[1],&_ONE,&_THREE)) { MARK_MODIFIED
+            if (e->curSubSong->speeds.val[1]<1) e->curSubSong->speeds.val[1]=1;
+            if (e->isPlaying()) play();
+          }
+        }
       }
 
       ImGui::TableNextRow();
       ImGui::TableNextColumn();
       ImGui::Text("Virtual Tempo");
       ImGui::TableNextColumn();
-      ImGui::SetNextItemWidth(avail);
+      ImGui::SetNextItemWidth(halfAvail);
       if (ImGui::InputScalar("##VTempoN",ImGuiDataType_S16,&e->curSubSong->virtualTempoN,&_ONE,&_THREE)) { MARK_MODIFIED
         if (e->curSubSong->virtualTempoN<1) e->curSubSong->virtualTempoN=1;
         if (e->curSubSong->virtualTempoN>255) e->curSubSong->virtualTempoN=255;
@@ -93,8 +172,8 @@ void FurnaceGUI::drawSpeed(bool asChild) {
       if (ImGui::IsItemHovered()) {
         ImGui::SetTooltip("Numerator");
       }
-      ImGui::TableNextColumn();
+      ImGui::SameLine();
-      ImGui::SetNextItemWidth(avail);
+      ImGui::SetNextItemWidth(halfAvail);
       if (ImGui::InputScalar("##VTempoD",ImGuiDataType_S16,&e->curSubSong->virtualTempoD,&_ONE,&_THREE)) { MARK_MODIFIED
         if (e->curSubSong->virtualTempoD<1) e->curSubSong->virtualTempoD=1;
         if (e->curSubSong->virtualTempoD>255) e->curSubSong->virtualTempoD=255;
@@ -105,28 +184,28 @@ void FurnaceGUI::drawSpeed(bool asChild) {
 
       ImGui::TableNextRow();
       ImGui::TableNextColumn();
-      ImGui::Text("TimeBase");
+      ImGui::Text("Divider");
       ImGui::TableNextColumn();
-      ImGui::SetNextItemWidth(avail);
+      ImGui::SetNextItemWidth(halfAvail);
       unsigned char realTB=e->curSubSong->timeBase+1;
       if (ImGui::InputScalar("##TimeBase",ImGuiDataType_U8,&realTB,&_ONE,&_THREE)) { MARK_MODIFIED
         if (realTB<1) realTB=1;
         if (realTB>16) realTB=16;
         e->curSubSong->timeBase=realTB-1;
       }
-      ImGui::TableNextColumn();
+      ImGui::SameLine();
-      ImGui::Text("%.2f BPM",calcBPM(e->curSubSong->speed1,e->curSubSong->speed2,e->curSubSong->hz,e->curSubSong->virtualTempoN,e->curSubSong->virtualTempoD));
+      ImGui::Text("%.2f BPM",calcBPM(e->curSubSong->speeds,e->curSubSong->hz,e->curSubSong->virtualTempoN,e->curSubSong->virtualTempoD));
 
       ImGui::TableNextRow();
       ImGui::TableNextColumn();
       ImGui::Text("Highlight");
       ImGui::TableNextColumn();
-      ImGui::SetNextItemWidth(avail);
+      ImGui::SetNextItemWidth(halfAvail);
       if (ImGui::InputScalar("##Highlight1",ImGuiDataType_U8,&e->curSubSong->hilightA,&_ONE,&_THREE)) {
         MARK_MODIFIED;
       }
-      ImGui::TableNextColumn();
+      ImGui::SameLine();
-      ImGui::SetNextItemWidth(avail);
+      ImGui::SetNextItemWidth(halfAvail);
       if (ImGui::InputScalar("##Highlight2",ImGuiDataType_U8,&e->curSubSong->hilightB,&_ONE,&_THREE)) {
         MARK_MODIFIED;
       }

src/gui/subSongs.cpp

@@ -106,6 +106,12 @@ void FurnaceGUI::drawSubSongs() {
     if (ImGui::InputText("##SubSongName",&e->curSubSong->name,ImGuiInputTextFlags_UndoRedo)) {
       MARK_MODIFIED;
     }
+
+    if (ImGui::GetContentRegionAvail().y>(10.0f*dpiScale)) {
+      if (ImGui::InputTextMultiline("##SubSongNotes",&e->curSubSong->notes,ImGui::GetContentRegionAvail(),ImGuiInputTextFlags_UndoRedo)) {
+        MARK_MODIFIED;
+      }
+    }
   }
   if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows)) curWindow=GUI_WINDOW_SUBSONGS;
   ImGui::End();

src/gui/sysConf.cpp

@@ -472,6 +472,8 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
       int clockSel=flags.getInt("clockSel",0);
       bool noExtMacros=flags.getBool("noExtMacros",false);
       bool fbAllOps=flags.getBool("fbAllOps",false);
+      int ssgVol=flags.getInt("ssgVol",128);
+      int fmVol=flags.getInt("fmVol",256);
 
       if (ImGui::RadioButton("8MHz (Neo Geo MVS)",clockSel==0)) {
         clockSel=0;
@@ -491,11 +493,25 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
         }
       }
 
+      if (CWSliderInt("SSG Volume",&ssgVol,0,256)) {
+        if (ssgVol<0) ssgVol=0;
+        if (ssgVol>256) ssgVol=256;
+        altered=true;
+      } rightClickable
+
+      if (CWSliderInt("FM/ADPCM Volume",&fmVol,0,256)) {
+        if (fmVol<0) fmVol=0;
+        if (fmVol>256) fmVol=256;
+        altered=true;
+      } rightClickable
+
       if (altered) {
         e->lockSave([&]() {
           flags.set("clockSel",clockSel);
           flags.set("noExtMacros",noExtMacros);
           flags.set("fbAllOps",fbAllOps);
+          flags.set("ssgVol",ssgVol);
+          flags.set("fmVol",fmVol);
         });
       }
       break;
@@ -870,6 +886,8 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
       int prescale=flags.getInt("prescale",0);
       bool noExtMacros=flags.getBool("noExtMacros",false);
       bool fbAllOps=flags.getBool("fbAllOps",false);
+      int ssgVol=flags.getInt("ssgVol",128);
+      int fmVol=flags.getInt("fmVol",256);
 
       ImGui::Text("Clock rate:");
       if (ImGui::RadioButton("3.58MHz (NTSC)",clockSel==0)) {
@@ -910,6 +928,18 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
         altered=true;
       }
 
+      if (CWSliderInt("SSG Volume",&ssgVol,0,256)) {
+        if (ssgVol<0) ssgVol=0;
+        if (ssgVol>256) ssgVol=256;
+        altered=true;
+      } rightClickable
+
+      if (CWSliderInt("FM Volume",&fmVol,0,256)) {
+        if (fmVol<0) fmVol=0;
+        if (fmVol>256) fmVol=256;
+        altered=true;
+      } rightClickable
+
       if (type==DIV_SYSTEM_YM2203_EXT || type==DIV_SYSTEM_YM2203_CSM) {
         if (ImGui::Checkbox("Disable ExtCh FM macros (compatibility)",&noExtMacros)) {
           altered=true;
@@ -925,6 +955,8 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
           flags.set("prescale",prescale);
           flags.set("noExtMacros",noExtMacros);
           flags.set("fbAllOps",fbAllOps);
+          flags.set("ssgVol",ssgVol);
+          flags.set("fmVol",fmVol);
         });
       }
       break;
@@ -936,6 +968,8 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
       int prescale=flags.getInt("prescale",0);
       bool noExtMacros=flags.getBool("noExtMacros",false);
       bool fbAllOps=flags.getBool("fbAllOps",false);
+      int ssgVol=flags.getInt("ssgVol",128);
+      int fmVol=flags.getInt("fmVol",256);
 
       ImGui::Text("Clock rate:");
       if (ImGui::RadioButton("8MHz (Arcade)",clockSel==0)) {
@@ -960,6 +994,18 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
         altered=true;
       }
 
+      if (CWSliderInt("SSG Volume",&ssgVol,0,256)) {
+        if (ssgVol<0) ssgVol=0;
+        if (ssgVol>256) ssgVol=256;
+        altered=true;
+      } rightClickable
+
+      if (CWSliderInt("FM/ADPCM Volume",&fmVol,0,256)) {
+        if (fmVol<0) fmVol=0;
+        if (fmVol>256) fmVol=256;
+        altered=true;
+      } rightClickable
+
       if (type==DIV_SYSTEM_YM2608_EXT || type==DIV_SYSTEM_YM2608_CSM) {
         if (ImGui::Checkbox("Disable ExtCh FM macros (compatibility)",&noExtMacros)) {
           altered=true;
@@ -975,6 +1021,8 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
           flags.set("prescale",prescale);
           flags.set("noExtMacros",noExtMacros);
           flags.set("fbAllOps",fbAllOps);
+          flags.set("ssgVol",ssgVol);
+          flags.set("fmVol",fmVol);
         });
       }
       break;