C219: more updates

to-do:
- VGM export
- presets
- noise/invert toggles

src/engine/platform/c140.cpp

@@ -193,10 +193,9 @@ void DivPlatformC140::tick(bool sysTick) {
         unsigned int end=0;
         if (chan[i].sample>=0 && chan[i].sample<parent->song.sampleLen) {
           if (is219) {
-            bank=(sampleOff[chan[i].sample]>>16)&0xff;
+            bank=(sampleOff[chan[i].sample]>>16)&3;
             start=sampleOff[chan[i].sample]&0xffff;
             end=MIN(start+(s->length8>>1)-1,65535);
-            logV("sampleOff[%d]=%d",chan[i].sample,sampleOff[chan[i].sample]);
           } else {
             bank=(sampleOff[chan[i].sample]>>16)&0xff;
             start=sampleOff[chan[i].sample]&0xffff;
@@ -217,8 +216,10 @@ void DivPlatformC140::tick(bool sysTick) {
         }
         rWrite(0x05+(i<<4),0); // force keyoff first
         if (is219) {
-          // TODO; group banking 
-
+          if (groupBank[i>>2]!=bank) {
+            groupBank[i>>2]=bank;
+          }
+          rWrite(0x1f1+(((3+(i>>2))&3)<<1),groupBank[i>>2]);
         } else {
           rWrite(0x04+(i<<4),bank);
         }
@@ -427,6 +428,9 @@ void DivPlatformC140::reset() {
     chan[i].std.setEngine(parent);
     rWrite(0x05+(i<<4),0);
   }
+  for (int i=0; i<4; i++) {
+    groupBank[i]=0;
+  }
 }
 
 int DivPlatformC140::getOutputCount() {

src/engine/platform/c140.h

@@ -55,6 +55,7 @@ class DivPlatformC140: public DivDispatch {
   bool sampleLoaded[256];
   bool is219;
   int totalChans;
+  unsigned char groupBank[4];
 
   unsigned char* sampleMem;
   size_t sampleMemLen;

src/engine/sysDef.cpp

@@ -1891,7 +1891,7 @@ void DivEngine::registerSystems() {
     "Namco C219", NULL, 0xcf, 0, 16, false, true, 0x161, false, (1U<<DIV_SAMPLE_DEPTH_MULAW)|(1U<<DIV_SAMPLE_DEPTH_8BIT),
     "Namco's PCM chip used in their NA1/2 hardware.",
     {"Channel 1", "Channel 2", "Channel 3", "Channel 4", "Channel 5", "Channel 6", "Channel 7", "Channel 8", "Channel 9", "Channel 10", "Channel 11", "Channel 12", "Channel 13", "Channel 14", "Channel 15", "Channel 16"},
-    {"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24"},
+    {"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16"},
     {DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM},
     {DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219, DIV_INS_C219},
     {DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA},