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OPL UNFINISHED
This commit is contained in:
tildearrow 2024-10-19 18:28:27 -05:00
parent dd9d8dccd1
commit 69b03172b1
13 changed files with 116 additions and 96 deletions
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21
src/engine/platform/ym2203.cpp
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@ -187,7 +187,10 @@ void DivPlatformYM2203::acquire_combo(short** buf, size_t len) {
if (--delay<1 && !(fm->read(0)&0x80)) {
QueuedWrite& w=writes.front();
if (w.addr<=0x1c || w.addr==0x2d || w.addr==0x2e || w.addr==0x2f) {
if (w.addr==0xfffffffe) {
delay=w.val;
writes.pop_front();
} else if (w.addr<=0x1c || w.addr==0x2d || w.addr==0x2e || w.addr==0x2f) {
// ymfm write
fm->write(0x0,w.addr);
fm->write(0x1,w.val);
@ -267,11 +270,15 @@ void DivPlatformYM2203::acquire_ymfm(short** buf, size_t len) {
if (!writes.empty()) {
if (--delay<1) {
QueuedWrite& w=writes.front();
fm->write(0x0,w.addr);
fm->write(0x1,w.val);
regPool[w.addr&0xff]=w.val;
if (w.addr==0xfffffffe) {
delay=w.val*6;
} else {
fm->write(0x0,w.addr);
fm->write(0x1,w.val);
regPool[w.addr&0xff]=w.val;
delay=6;
}
writes.pop_front();
delay=6;
}
}
@ -661,9 +668,7 @@ void DivPlatformYM2203::tick(bool sysTick) {
// hard reset handling
if (mustHardReset) {
for (unsigned int i=hardResetElapsed; i<hardResetCycles; i++) {
immWrite(0xf0,i&0xff);
}
immWrite(0xfffffffe,hardResetCycles-hardResetElapsed);
for (int i=0; i<3; i++) {
if (i==2 && extMode) continue;
if ((chan[i].keyOn || chan[i].opMaskChanged) && chan[i].hardReset) {