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now actually finish SAA1099

This commit is contained in:
tildearrow 2022-01-14 23:37:03 -05:00
parent 0e2230d036
commit 10c78e3fd2
1 changed files with 11 additions and 4 deletions
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15
src/engine/platform/saa.cpp
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@ -30,7 +30,7 @@ void DivPlatformSAA1099::acquire(short* bufL, short* bufR, size_t start, size_t
}
inline unsigned char applyPan(unsigned char vol, unsigned char pan) {
return (((vol*(pan>>4))/15)<<4)|((vol*(pan&15))/15);
return ((vol*(pan>>4))/15)|(((vol*(pan&15))/15)<<4);
}
void DivPlatformSAA1099::tick() {
@ -152,7 +152,6 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
if (chan[c.chan].active) rWrite(c.chan,applyPan(chan[c.chan].vol&15,chan[c.chan].pan));
}
break;
break;
}
case DIV_CMD_GET_VOLUME: {
return chan[c.chan].vol;
@ -192,6 +191,14 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
}
break;
}
case DIV_CMD_PANNING:
chan[c.chan].pan=c.value;
if (isMuted[c.chan]) {
rWrite(c.chan,0);
} else {
if (chan[c.chan].active) rWrite(c.chan,applyPan(chan[c.chan].vol&15,chan[c.chan].pan));
}
break;
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].freqChanged=true;
@ -205,8 +212,8 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
rWrite(0x16,saaNoise[0]|(saaNoise[1]<<4));
break;
case DIV_CMD_SAA_ENVELOPE:
saaEnv[c.value/3]=c.value;
rWrite(0x18+(c.value/3),c.value);
saaEnv[c.chan/3]=c.value;
rWrite(0x18+(c.chan/3),c.value);
break;
case DIV_ALWAYS_SET_VOLUME:
return 0;