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PowerNoise: fix phase reset macro and improve LFSR

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This commit is contained in:
tildearrow 2024-01-26 16:19:46 -05:00
parent 9130fffce7
commit b3c8286107
1 changed files with 9 additions and 3 deletions
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12
src/engine/platform/powernoise.cpp
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@ -158,9 +158,11 @@ void DivPlatformPowerNoise::tick(bool sysTick) {
chWrite(i,0x05,(chan[i].tapA<<4)|chan[i].tapB);
}
if (chan[i].std.ex8.had) {
chan[i].initLFSR=chan[i].std.ex8.val&0xffff;
chWrite(i,0x03,chan[i].std.ex8.val&0xff);
chWrite(i,0x04,chan[i].std.ex8.val>>8);
if (chan[i].initLFSR!=(chan[i].std.ex8.val&0xffff)) {
chan[i].initLFSR=chan[i].std.ex8.val&0xffff;
chWrite(i,0x03,chan[i].std.ex8.val&0xff);
chWrite(i,0x04,chan[i].std.ex8.val>>8);
}
}
}
@ -407,6 +409,10 @@ void DivPlatformPowerNoise::forceIns() {
for (int i=0; i<4; i++) {
chan[i].insChanged=true;
chan[i].freqChanged=true;
if (i<3) {
chWrite(i,0x03,chan[i].initLFSR&0xff);
chWrite(i,0x04,chan[i].initLFSR>>8);
}
}
}