prepare for ch3 mode

src/engine/platform/genesis.cpp

@@ -3,8 +3,6 @@
 #include <string.h>
 #include <math.h>
 
-// TODO fix all the writes.
-// i think there is no wait for data writes, just for ON/OFF writes
 void DivPlatformGenesis::acquire(int& l, int& r) {
   static short o[2];
 

src/engine/platform/genesis.h

@@ -1,3 +1,5 @@
+#ifndef _GENESIS_H
+#define _GENESIS_H
 #include "../dispatch.h"
 #include <queue>
 #include "../../../extern/Nuked-OPN2/ym3438.h"
@@ -5,43 +7,45 @@
 #include "sms.h"
 
 class DivPlatformGenesis: public DivDispatch {
-  struct Channel {
-    unsigned char freqH, freqL;
-    int freq, baseFreq, pitch;
-    unsigned char ins;
-    signed char konCycles;
-    bool active, insChanged, freqChanged, keyOn, keyOff;
-    signed char vol;
-    unsigned char pan;
-    Channel(): freqH(0), freqL(0), freq(0), baseFreq(0), pitch(0), ins(0), active(false), insChanged(true), freqChanged(false), keyOn(false), keyOff(false), vol(0), pan(3) {}
-  };
-  Channel chan[10];
-  struct QueuedWrite {
-    unsigned short addr;
-    unsigned char val;
-    bool addrOrVal;
-    QueuedWrite(unsigned short a, unsigned char v): addr(a), val(v), addrOrVal(false) {}
-  };
-  std::queue<QueuedWrite> writes;
-  ym3438_t fm;
-  DivPlatformSMS psg;
-  int psgClocks;
-  int psgOut;
-  int delay;
-  unsigned char lastBusy;
-
-  bool dacMode;
-  int dacPeriod;
-  int dacRate;
-  int dacPos;
-  int dacSample;
-
-  short oldWrites[512];
-  short pendingWrites[512];
-
+  protected:
+    struct Channel {
+      unsigned char freqH, freqL;
+      int freq, baseFreq, pitch;
+      unsigned char ins;
+      signed char konCycles;
+      bool active, insChanged, freqChanged, keyOn, keyOff;
+      signed char vol;
+      unsigned char pan;
+      Channel(): freqH(0), freqL(0), freq(0), baseFreq(0), pitch(0), ins(0), active(false), insChanged(true), freqChanged(false), keyOn(false), keyOff(false), vol(0), pan(3) {}
+    };
+    Channel chan[10];
+    struct QueuedWrite {
+      unsigned short addr;
+      unsigned char val;
+      bool addrOrVal;
+      QueuedWrite(unsigned short a, unsigned char v): addr(a), val(v), addrOrVal(false) {}
+    };
+    std::queue<QueuedWrite> writes;
+    ym3438_t fm;
+    DivPlatformSMS psg;
+    int psgClocks;
+    int psgOut;
+    int delay;
+    unsigned char lastBusy;
+  
+    bool dacMode;
+    int dacPeriod;
+    int dacRate;
+    int dacPos;
+    int dacSample;
+  
+    short oldWrites[512];
+    short pendingWrites[512];
+  
   public:
     void acquire(int& l, int& r);
     int dispatch(DivCommand c);
     void tick();
     int init(DivEngine* parent, int channels, int sugRate);
 };
+#endif

src/engine/platform/genesisext.cpp

@@ -0,0 +1,32 @@
+#include "genesisext.h"
+#include <math.h>
+
+int DivPlatformGenesisExt::dispatch(DivCommand c) {
+  if (c.chan<2) {
+    return DivPlatformGenesis::dispatch(c);
+  }
+  if (c.chan>5) {
+    c.chan-=3;
+    return DivPlatformGenesis::dispatch(c);
+  }
+  printf("HANDLE: %d %d %d %d\n",c.cmd,c.chan,c.value,c.value2);
+  switch (c.cmd) {
+    case DIV_CMD_NOTE_ON:
+      chan[c.chan].freq=16.4f*pow(2.0f,((float)c.value/12.0f));
+      chan[c.chan].active=true;
+      break;
+    case DIV_CMD_NOTE_OFF:
+      chan[c.chan].active=false;
+      break;
+    case DIV_CMD_VOLUME:
+      chan[c.chan].vol=c.value;
+      break;
+    default:
+      break;
+  }
+  return 1;
+}
+
+void DivPlatformGenesisExt::tick() {
+  DivPlatformGenesis::tick();
+}

src/engine/platform/genesisext.h

@@ -0,0 +1,9 @@
+#include "../dispatch.h"
+
+#include "genesis.h"
+
+class DivPlatformGenesisExt: public DivPlatformGenesis {
+  public:
+    int dispatch(DivCommand c);
+    void tick();
+};