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Thanks for the tip and sorry for the late reply. It doesn't look like much has been done with the pitch of rhythm instruments and there is a lot of conflicting information, so I wrote some sample .dro files and tested them out. Unfortunately I used an emulator which kind of defeats the purpose I ...

Hi all,

I'm currently reverse engineering a handful of music file formats from early 1990s computer games, many of which used the OPL2/3 chips for playback.

I have unfortunately run into a bit of a dead end as far as documentation goes for the OPL's rhythm mode, so I am hoping that someone here ...