I have added some new features to the Sega Mega Drive / Genesis MIDI Interface.
I have updated the pitch bend routine, which now boasts a maximum resolution of 1.5625 cents (according to the math I'm using - the actual pitch resolution on a machine is not as fine). The user can also set the pitch bend amount, from 0 to 7 semitones using MIDI control messages.
I have added a polyphonic mode handler, the (de)activation of which can be set via MIDI control messages. This is not quite there yet, though.