Today I began BASIC MIDI routines with the C64 Expansion Port Sentech/Passport type MIDI interface, mostly to check my MIDI interface and also to re-familiarize myself with the MIDI commands. I was able to get my Kawai K3 to play a slew of notes which I sent to it by way of a fornext loop. So the MIDI programming re-begins..after almost 30 years. So hopefully I will be able to integrate this into Fastfingers. This in only HALF of the BASIC programming. The other HALF is to also RECEIVE notes from a MIDI keyboard to trigger the Fastfingers sounds.
The PASSPORT type MIDI interface was the most popular, and it is not easy to make a universal MIDI driver because of the way the DATA and CONTROL/STATUS registers work. There is only ONE STATUS register on the PASSPORT and the same register is also the CONTROL register. Many other MIDI interfaces will use 2 separate registers for STATUS AND CONTROL. The same goes with the DATA register. It also flips so that it can be a READ or WRITE register.
So what I'm basically saying. Is to start shopping for a PASSPORT type MIDI interface if you plan on using Fastfingers ,in the future, with MIDI.
It may look like a 24 pin connector, but the top and bottom pins are shorted together. I know. I'm stuck with 20 of these. I bought them for my new MIDI interface. Shipping and "return charges" will apply so I'm holding on to these.