Unfortunately, looks like my little project has struck a road-block!
After trying to read the PIC microcontroller and failing to get something that looked like a valid copy of the contents, I looked through the Data Sheet (Direct PDF link), I noticed mention of a “Code Protection” feature that was presumably turned on in this case…
So, short of finding a way around that, or reverse engineering the contents, or sourcing a prototype unit / original dev code, etc, I don’t think I can do much more. I had planned on creating an open source project to allow people to create their own joypads based on this one, bit of a shame really…
Perhaps another model of ADB JoyPad will be easier to do that with, I will consider some options :)
Currently listening: Bailey - “Intelligent Drum & Bass (1996)"