Figured it out: when generating midi notes on channel 10, program is always 1 and then the *note number* determines the percussion instrument. =]

I'm playing with generating some midi tracks. From what I understand, OPL3 does not have a full percussion bank. When I generate midi notes on channel 10 only program 1 plays what sounds like a bass or kick drum without ADLMIDI generating a 'missing percussion MIDI bank' Debug warning (and all the …