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VGM export: fix noise in Neo Geo

This commit is contained in:
tildearrow 2022-01-24 02:57:49 -05:00
parent 066f0f074f
commit ea796c2d6b
2 changed files with 9 additions and 2 deletions
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10
src/engine/platform/ym2610.cpp
View File

@ -70,7 +70,8 @@ void DivPlatformYM2610::tick() {
}
}
if (chan[i].std.hadDuty) {
rWrite(0x06,31-chan[i].std.duty);
ayNoiseFreq=31-chan[i].std.duty;
rWrite(0x06,ayNoiseFreq);
}
if (chan[i].std.hadWave) {
chan[i].psgMode=(chan[i].std.wave+1)&7;
@ -477,7 +478,8 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
break;
case DIV_CMD_STD_NOISE_FREQ:
if (c.chan<4 || c.chan>6) break;
rWrite(0x06,31-c.value);
ayNoiseFreq=31-c.value;
rWrite(0x06,ayNoiseFreq);
break;
case DIV_CMD_AY_ENVELOPE_SET:
if (c.chan<4 || c.chan>6) break;
@ -600,11 +602,15 @@ void DivPlatformYM2610::reset() {
ayEnvMode=0;
ayEnvSlide=0;
ayEnvSlideLow=0;
ayNoiseFreq=0;
delay=0;
extMode=false;
// AY noise
immWrite(0x06,ayNoiseFreq);
// LFO
immWrite(0x22,0x08);

1
src/engine/platform/ym2610.h
View File

@ -47,6 +47,7 @@ class DivPlatformYM2610: public DivDispatch {
int dacRate;
int dacPos;
int dacSample;
int ayNoiseFreq;
unsigned char sampleBank;
int delay;