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implement more effects

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- C64: set fine duty and filter
- Neo Geo: slide SSG envelope
This commit is contained in:
tildearrow 2022-01-11 18:38:26 -05:00
parent 69b56e6d4c
commit 651db5784e
7 changed files with 67 additions and 0 deletions
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26
src/engine/platform/ym2610.cpp
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@ -99,6 +99,26 @@ void DivPlatformYM2610::tick() {
((chan[4].psgMode&2)<<2)|
((chan[5].psgMode&2)<<3)|
((chan[6].psgMode&2)<<4)));
if (ayEnvSlide!=0) {
ayEnvSlideLow+=ayEnvSlide;
while (ayEnvSlideLow>7) {
ayEnvSlideLow-=8;
if (ayEnvPeriod<0xffff) {
ayEnvPeriod++;
immWrite(0x0b,ayEnvPeriod);
immWrite(0x0c,ayEnvPeriod>>8);
}
}
while (ayEnvSlideLow<-7) {
ayEnvSlideLow+=8;
if (ayEnvPeriod>0) {
ayEnvPeriod--;
immWrite(0x0b,ayEnvPeriod);
immWrite(0x0c,ayEnvPeriod>>8);
}
}
}
// FM
for (int i=0; i<4; i++) {
@ -462,6 +482,10 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
immWrite(0x0b,ayEnvPeriod);
immWrite(0x0c,ayEnvPeriod>>8);
break;
case DIV_CMD_AY_ENVELOPE_SLIDE:
if (c.chan<4 || c.chan>6) break;
ayEnvSlide=c.value;
break;
case DIV_ALWAYS_SET_VOLUME:
return 0;
break;
@ -543,6 +567,8 @@ void DivPlatformYM2610::reset() {
sampleBank=0;
ayEnvPeriod=0;
ayEnvMode=0;
ayEnvSlide=0;
ayEnvSlideLow=0;
delay=0;