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dev108 - add SN period range compat flag

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there's room for possible improvement
This commit is contained in:
tildearrow 2022-08-19 18:46:19 -05:00
parent 5fe3a3c35a
commit c74d7fab37
6 changed files with 32 additions and 8 deletions
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10
src/engine/platform/sms.cpp
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@ -188,7 +188,11 @@ void DivPlatformSMS::tick(bool sysTick) {
if (chan[i].freqChanged) {
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2,chipClock,toneDivider);
if (chan[i].freq>1023) chan[i].freq=1023;
if (chan[i].freq<8) chan[i].freq=1;
if (parent->song.snNoLowPeriods) {
if (chan[i].freq<8) chan[i].freq=1;
} else {
if (chan[i].freq<0) chan[i].freq=0;
}
//if (chan[i].actualNote>0x5d) chan[i].freq=0x01;
rWrite(0,0x80|i<<5|(chan[i].freq&15));
rWrite(0,chan[i].freq>>4);
@ -203,7 +207,9 @@ void DivPlatformSMS::tick(bool sysTick) {
if (chan[3].freqChanged || updateSNMode) {
chan[3].freq=parent->calcFreq(chan[3].baseFreq,chan[3].pitch,true,0,chan[3].pitch2,chipClock,noiseDivider);
if (chan[3].freq>1023) chan[3].freq=1023;
if (chan[3].actualNote>0x5d) chan[3].freq=0x01;
if (parent->song.snNoLowPeriods) {
if (chan[3].actualNote>0x5d) chan[3].freq=0x01;
}
if (snNoiseMode&2) { // take period from channel 3
if (updateSNMode || resetPhase) {
if (snNoiseMode&1) {