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OPL: and now fix the fix

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tildearrow 2024-09-25 14:43:24 -05:00
parent f7412e5234
commit 8ac3491672
2 changed files with 16 additions and 3 deletions
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18
src/engine/platform/opl.cpp
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@ -1218,11 +1218,12 @@ void DivPlatformOPL::tick(bool sysTick) {
memset(weWillWriteRRLater,0,64*sizeof(bool));
unsigned char opMask=(int)(chan[0].fourOp)|(chan[2].fourOp<<1)|(chan[4].fourOp<<2)|(chan[6].fourOp<<3)|(chan[8].fourOp<<4)|(chan[10].fourOp<<5);
// write ops which are being enabled
if (update4OpMask) {
update4OpMask=false;
if (oplType==3) {
unsigned char opMask=(int)(chan[0].fourOp)|(chan[2].fourOp<<1)|(chan[4].fourOp<<2)|(chan[6].fourOp<<3)|(chan[8].fourOp<<4)|(chan[10].fourOp<<5);
immWrite(0x104,opMask);
immWrite(0x104,opMask|oldOpMask);
//printf("updating opMask to %.2x\n",opMask);
}
}
@ -1251,6 +1252,16 @@ void DivPlatformOPL::tick(bool sysTick) {
}
}
// and now the ones being disabled
if (update4OpMask) {
update4OpMask=false;
if (oplType==3) {
immWrite(0x104,opMask);
//printf("updating opMask to %.2x\n",opMask);
}
oldOpMask=opMask;
}
// update drums
if (properDrums) {
bool updateDrums=false;
@ -2719,6 +2730,7 @@ void DivPlatformOPL::reset() {
while (!writes.empty()) writes.pop();
memset(regPool,0,768);
oldOpMask=0;
dacVal=0;
dacVal2=0;
dacOut=0;

1
src/engine/platform/opl.h
View file

@ -115,6 +115,7 @@ class DivPlatformOPL: public DivDispatch {
bool lastSY;
bool waitingBusy;
int downsamplerStep;
unsigned char oldOpMask;
unsigned char* adpcmBMem;
size_t adpcmBMemLen;