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Merge pull request #484 from grauw/y8950-adpcm-fix 

More Y8950 ADPCM fixes
This commit is contained in:
tildearrow 2022-05-26 21:50:51 -05:00 committed by GitHub
parent 0577aa3569 4b4bc98417
commit 7e938c869d
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 7 additions and 5 deletions
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2
src/engine/platform/opl.cpp
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@ -735,6 +735,7 @@ int DivPlatformOPL::dispatch(DivCommand c) {
if (chan[c.chan].sample>=0 && chan[c.chan].sample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[c.chan].sample);
immWrite(8,0);
immWrite(7,0x01); // reset
immWrite(9,(s->offB>>2)&0xff);
immWrite(10,(s->offB>>10)&0xff);
int end=s->offB+s->lengthB-1;
@ -770,6 +771,7 @@ int DivPlatformOPL::dispatch(DivCommand c) {
}
DivSample* s=parent->getSample(12*sampleBank+c.value%12);
immWrite(8,0);
immWrite(7,0x01); // reset
immWrite(9,(s->offB>>2)&0xff);
immWrite(10,(s->offB>>10)&0xff);
int end=s->offB+s->lengthB-1;

10
src/engine/vgmOps.cpp
View File

@ -386,22 +386,22 @@ void DivEngine::performVGMWrite(SafeWriter* w, DivSystem sys, DivRegWrite& write
case DIV_SYSTEM_Y8950_DRUMS:
// disable envelope
for (int i=0; i<6; i++) {
w->writeC(0x0b|baseAddr1);
w->writeC(0x0c|baseAddr1);
w->writeC(0x80+i);
w->writeC(0x0f);
w->writeC(0x0b|baseAddr1);
w->writeC(0x0c|baseAddr1);
w->writeC(0x88+i);
w->writeC(0x0f);
w->writeC(0x0b|baseAddr1);
w->writeC(0x0c|baseAddr1);
w->writeC(0x90+i);
w->writeC(0x0f);
}
// key off + freq reset
for (int i=0; i<9; i++) {
w->writeC(0x0b|baseAddr1);
w->writeC(0x0c|baseAddr1);
w->writeC(0xa0+i);
w->writeC(0);
w->writeC(0x0b|baseAddr1);
w->writeC(0x0c|baseAddr1);
w->writeC(0xb0+i);
w->writeC(0);
}