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A#7 SMS oddity

This commit is contained in:
tildearrow 2021-05-16 20:10:52 -05:00
parent 2532401265
commit fbc29e1106
1 changed files with 2 additions and 0 deletions
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2
src/engine/platform/sms.cpp
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@ -25,6 +25,7 @@ void DivPlatformSMS::tick() {
for (int i=0; i<3; i++) {
if (chan[i].freqChanged) {
chan[i].freq=(chan[i].baseFreq*(ONE_SEMITONE-chan[i].pitch))/ONE_SEMITONE;
if (chan[i].note>0x5d) chan[i].freq=0x01;
sn->write(0x80|i<<5|(chan[i].freq&15));
sn->write(chan[i].freq>>4);
chan[i].freqChanged=false;
@ -33,6 +34,7 @@ void DivPlatformSMS::tick() {
if (chan[3].freqChanged || updateSNMode) {
updateSNMode=false;
chan[3].freq=(chan[3].baseFreq*(ONE_SEMITONE-chan[3].pitch))/ONE_SEMITONE;
if (chan[3].note>0x5d) chan[3].freq=0x01;
chan[3].freqChanged=false;
if (snNoiseMode&2) { // take period from channel 3
if (snNoiseMode&1) {