Lone in the night

The rackmount version of the Roland Jupiter 6 was the MKS-80, released in 1984. A dedicated programmer was then available, the MPG80. 30 years later, the MKS-80 is a sought after intrument and the MPG-80 is even rarer. My project is to recreate a MPG-80, based on modern components, Because of the position of the MPG-80 in the MIDI chain, I take this opportunity to add some goodies: - a main power switch to swith on/off both units - a upper/lower toggle switch which avoids to select it on the MKS-80 - an arpeggiator syncable on MIDI and External trigger - More memory to store paches and tones - Menu switches & LCD display to add further goodies In the original MPG-80, there is no feedback from the MKS-80. Hence, no protocol is possible (ie the MPG-80 cannot read the settings from a patch; it only sends the new values to the MKS-80). In the new version, there are 2 MIDI IN, which allows a feedback from the MKS-80. The MPG-80 can request the parameters from a...