sean: what hw revision Big Trak is yours? Or will you post that in a hw/pinout info txt later?
The PCB is Rev D; the serial # on the bottom is 1260863. The board is hard-wired into the unit, so it's a little tough to trace the wiring. I want to sub in a little PIC processor for the TMS1000 I pulled, so I don't want to cut the wires. The link I posted has lots of good info, including schematics. So far, the things I have checked match up with his info.
