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dev236 - fix OPM E5xx range

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when loading older files or DefleMask modules, E5xx effects will be
converted to the new range (previously it was 40-C0).
This commit is contained in:
tildearrow 2025-10-21 03:12:45 -05:00
parent 03794b58f2
commit 6569477706
4 changed files with 40 additions and 8 deletions
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7
src/engine/fileOps/dmf.cpp
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@ -840,6 +840,13 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
pat->newData[k][DIV_PAT_FXVAL(l)]=128+((pat->newData[k][DIV_PAT_FXVAL(l)]-128)/4);
}
}
// YM2151: pitch effect range is different
if (ds.system[0]==DIV_SYSTEM_ARCADE && pat->newData[k][DIV_PAT_FX(l)]==0xe5 && pat->newData[k][DIV_PAT_FXVAL(l)]!=-1) {
int newVal=(2*((pat->newData[k][DIV_PAT_FXVAL(l)]&0xff)-0x80))+0x80;
if (newVal<0) newVal=0;
if (newVal>0xff) newVal=0xff;
pat->newData[k][DIV_PAT_FXVAL(l)]=newVal;
}
}
// instrument
pat->newData[k][DIV_PAT_INS]=reader.readS();