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even more ancient version compatibility

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tildearrow 2021-06-09 01:52:00 -05:00
parent 5b707eeeec
commit cf6b213d2c
1 changed files with 11 additions and 0 deletions
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11
src/engine/engine.cpp
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@ -542,9 +542,20 @@ bool DivEngine::load(void* f, size_t slen) {
if (ds.system==DIV_SYSTEM_SMS && ds.version<0x0e && pat->data[k][1]>0) {
// apparently it was up one octave before
pat->data[k][1]--;
} else if (ds.system==DIV_SYSTEM_GENESIS && ds.version<0x0e && pat->data[k][1]>0 && i>5) {
// ditto
pat->data[k][1]--;
}
// volume
pat->data[k][3]=reader.readS();
if (ds.version<0x0a) {
// back then volume was stored as 00-ff instead of 00-7f/0-f
if (i>5) {
pat->data[k][3]>>=4;
} else {
pat->data[k][3]>>=1;
}
}
for (int l=0; l<chan->effectRows; l++) {
// effect
pat->data[k][4+(l<<1)]=reader.readS();