Hey! Great topic and great info!
I have a question.. I have a Johnson J12 footcontroller which has two expression pedals and twelve footswitches (momentary). I'm wondering if it would be possible to somehow modify this controller into a MIDI controller..? It holds a 27C256 PROM and works through a 7-pin cable which also supplies for it's power.
If it would be possible to reprogram the 27C256 PROM that would be very nice, if not, I give up and will get myself a Behringer or something.. :)