force insChanged on note input

partially solves issue #8

src/engine/platform/amiga.cpp

@@ -116,7 +116,7 @@ int DivPlatformAmiga::dispatch(DivCommand c) {
       chan[c.chan].std.init(NULL);
       break;
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].ins=c.value;
       }
       break;

src/engine/platform/arcade.cpp

@@ -286,7 +286,7 @@ int DivPlatformArcade::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].insChanged=true;
       }
       chan[c.chan].ins=c.value;

src/engine/platform/ay.cpp

@@ -157,7 +157,7 @@ int DivPlatformAY8910::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].insChanged=true;
       }
       chan[c.chan].ins=c.value;

src/engine/platform/ay8930.cpp

@@ -184,7 +184,7 @@ int DivPlatformAY8930::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].insChanged=true;
       }
       chan[c.chan].ins=c.value;

src/engine/platform/c64.cpp

@@ -143,7 +143,7 @@ int DivPlatformC64::dispatch(DivCommand c) {
       //chan[c.chan].std.init(NULL);
       break;
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].insChanged=true;
         chan[c.chan].ins=c.value;
       }

src/engine/platform/gb.cpp

@@ -193,7 +193,7 @@ int DivPlatformGB::dispatch(DivCommand c) {
       chan[c.chan].std.init(NULL);
       break;
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].ins=c.value;
         if (c.chan!=2) {
           chan[c.chan].vol=parent->getIns(chan[c.chan].ins)->gb.envVol;

src/engine/platform/genesis.cpp

@@ -241,7 +241,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].insChanged=true;
       }
       chan[c.chan].ins=c.value;

src/engine/platform/genesisext.cpp

@@ -74,7 +74,7 @@ int DivPlatformGenesisExt::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_INSTRUMENT:
-      if (opChan[ch].ins!=c.value) {
+      if (opChan[ch].ins!=c.value || c.value2==1) {
         opChan[ch].insChanged=true;
       }
       opChan[ch].ins=c.value;

src/engine/platform/nes.cpp

@@ -192,7 +192,7 @@ int DivPlatformNES::dispatch(DivCommand c) {
       chan[c.chan].std.init(NULL);
       break;
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].ins=c.value;
       }
       break;

src/engine/platform/pce.cpp

@@ -173,7 +173,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
       chan[c.chan].std.init(NULL);
       break;
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].ins=c.value;
       }
       break;

src/engine/platform/saa.cpp

@@ -158,7 +158,7 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].insChanged=true;
       }
       chan[c.chan].ins=c.value;

src/engine/platform/tia.cpp

@@ -145,7 +145,7 @@ int DivPlatformTIA::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].insChanged=true;
       }
       chan[c.chan].ins=c.value;

src/engine/platform/ym2610.cpp

@@ -309,7 +309,7 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_INSTRUMENT:
-      if (chan[c.chan].ins!=c.value) {
+      if (chan[c.chan].ins!=c.value || c.value2==1) {
         chan[c.chan].insChanged=true;
       }
       chan[c.chan].ins=c.value;

src/engine/platform/ym2610ext.cpp

@@ -74,7 +74,7 @@ int DivPlatformYM2610Ext::dispatch(DivCommand c) {
       break;
     }
     case DIV_CMD_INSTRUMENT:
-      if (opChan[ch].ins!=c.value) {
+      if (opChan[ch].ins!=c.value || c.value2==1) {
         opChan[ch].insChanged=true;
       }
       opChan[ch].ins=c.value;

src/engine/playback.cpp

@@ -755,7 +755,7 @@ bool DivEngine::nextTick(bool noAccum) {
   while (!pendingNotes.empty()) {
     DivNoteEvent& note=pendingNotes.front();
     if (note.on) {
-      dispatchCmd(DivCommand(DIV_CMD_INSTRUMENT,note.channel,note.ins));
+      dispatchCmd(DivCommand(DIV_CMD_INSTRUMENT,note.channel,note.ins,1));
       dispatchCmd(DivCommand(DIV_CMD_NOTE_ON,note.channel,note.note));
     } else {
       dispatchCmd(DivCommand(DIV_CMD_NOTE_OFF,note.channel));