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Merge pull request #742 from ZeroByteOrg/ZSMlfoinit 

Fix ZSM export to emit LFO AMD/PMD initialization on YM2151
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tildearrow 2022-11-10 15:18:24 -05:00 committed by GitHub
parent be781ef8d4 e4054348f4
commit 10f7b844a5
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1 changed files with 6 additions and 4 deletions
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10
src/engine/zsmOps.cpp
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@ -94,10 +94,12 @@ SafeWriter* DivEngine::saveZSM(unsigned int zsmrate, bool loop) {
if (VERA >= 0) disCont[VERA].dispatch->toggleRegisterDump(true);
if (YM >= 0) {
disCont[YM].dispatch->toggleRegisterDump(true);
zsm.writeYM(0x18,0); // initialize the LFO freq to 0
// note - I think there's a bug where Furnace writes AMD/PMD=max
// that shouldn't be there, requiring this initialization that shouldn't
// be there for ZSM.
// emit LFO initialization commands
zsm.writeYM(0x18,0); // freq = 0
zsm.writeYM(0x19,0x7F); // AMD = 7F
zsm.writeYM(0x19,0xFF); // PMD = 7F
// TODO: incorporate the Furnace meta-command for init data and filter
// out writes to otherwise-unused channels.
}
while (!done) {