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dev97 - add old octave boundary compat flag

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This commit is contained in:
tildearrow 2022-05-22 13:25:59 -05:00
parent b40c95013a
commit 393d1c018d
10 changed files with 94 additions and 36 deletions
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20
src/engine/platform/ym2203.cpp
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@ -684,14 +684,22 @@ int DivPlatformYM2203::dispatch(DivCommand c) {
// what the heck!
if (!chan[c.chan].portaPause) {
if ((newFreq&0x7ff)>boundaryTop && (newFreq&0xf800)<0x3800) {
chan[c.chan].portaPauseFreq=(boundaryBottom)|((newFreq+0x800)&0xf800);
chan[c.chan].portaPause=true;
break;
if (parent->song.fbPortaPause) {
chan[c.chan].portaPauseFreq=(parent->song.oldOctaveBoundary?(newFreq>>1):boundaryBottom)|((newFreq+0x800)&0xf800);
chan[c.chan].portaPause=true;
break;
} else {
newFreq=(newFreq>>1)|((newFreq+0x800)&0xf800);
}
}
if ((newFreq&0x7ff)<boundaryBottom && (newFreq&0xf800)>0) {
chan[c.chan].portaPauseFreq=newFreq=(boundaryTop-1)|((newFreq-0x800)&0xf800);
chan[c.chan].portaPause=true;
break;
if (parent->song.fbPortaPause) {
chan[c.chan].portaPauseFreq=newFreq=(parent->song.oldOctaveBoundary?(newFreq<<1):(boundaryTop-1))|((newFreq-0x800)&0xf800);
chan[c.chan].portaPause=true;
break;
} else {
newFreq=(newFreq<<1)|((newFreq-0x800)&0xf800);
}
}
}
chan[c.chan].portaPause=false;