Live controller of the megadrive sound-chip.

This simple YM2612 controller allows you to create music&noise live on your megadrive. Functionalities of the YM2612 are nearly all exposed, with the addition of a basic sequencer (keys on/off), tone generator feature (set mode to 2), may be used to patch other synth ...

It implements features from this document : http://www.smspower.org/maxim/Documents/YM2612

Only missing the special Channels 3 & 6 operators frequencies handling, and the DAC...