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frangarcj / SMSplusVITA

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No FM Sound #4

Open 0x64c opened 7 years ago

0x64c commented 7 years ago

I've tried every game that supports YM2413 FM Sound, but all of them only output PSG or silence; regardless of the FM emulation settings.

gameblabla commented 6 years ago

It's a bug in the code. https://github.com/frangarcj/SMSplusVITA/blob/master/smsplus/memz80.c#L136 If you disable !(sms.memctrl & 4) then FM sound will work again.

You also need to make sure not to enable FM sound for Game Gear or else it won't boot some of them. (like Sonic Drift 2)