ISO: Motorola MDP-1000 info/software

Hi all -- This is a long shot, but I was curious if anyone might have information on the Motorola MDP-1000 minicomputer. I picked one up recently and I'm working on restoring it. Of particular interest is the power supply, which is external to the processor and which I am missing. I think I have the voltages worked out (+/-5V and +/-15V), but there are a number of other signals on the power supply connector that I'm unsure of at the moment. I've put a few pictures up here: https://1drv.ms/u/s!Aqb36sqnCIfMpIVYmzKjFnsT3nHh8w?e=b2iqqv I'll note that this isn't technically an MDP-1000 -- it's labeled as an MDP-6650 on the rear. I suspect that this is a ruggedized version of the 1000 intended for harsher environments. The front panel of mine appears to be identical to the drawings of the MDP-1000 in the manuals I have. It also came with a binder of documentation (but alas no schematics) that I'll be scanning soon and getting off to Al. It's an odd little system -- 5 12-bit registers, a 12-bit ALU, and a 12-bit Instruction Register, but the memory is 8 bits wide. Instructions are packed into two bytes normally, but there's a special 64-byte region of memory that can be used to store "shared bytes," which allow encoding certain instructions into a single byte, taking the other byte from the shared region. I've never seen anything quite like this. I wonder why they didn't just use 12-bit wide memory... Also the process for using the front panel to examine and deposit memory is insane. Here's the instructions for reading a memory location; it's 10 steps. Depositing is 17. https://1drv.ms/u/s!Aqb36sqnCIfMpIVWThgwlxgCMQo59A If anyone has anything on this, let me know. Not expecting much, but it's worth a shot. - Josh