Well, I drove up to Canada yesterday and picked up the Burroughs B80. That thing is HEAVY. It was down in the basement, and took several of us to get it out. Unfortunately, while the two sections of the main unit (CPU and console) will unbolt, they can't easily be separated because of the massively complex wiring harness inside. You'd think they would have put a few convenient connectors in there. But, that meant that we had to move the main unit up as one piece - it's the size of an office desk and weighs several hundred pounds. The power supply was an interesting beast, and I am unsure of it's purpose. The B80 has a hefty power supply inside it - with transformers and regulators, and seems perfectly capable of being connected to the wall directly. But along with the system unit is a power supply box - 23" wide, 30" tall and 29" deep. I didn't pull the panels off it, but the computer was direcly wired into it originally, with a heavy three conductor cable. (well, sorta directly. A three conductor cable came out the back of the unit, with no connector - and the computer had no power plug on it either. He had it spliced to the power supply's output with tape. ) I really think that this power supply box is only a UPS - but he claims that the computer won't work without it. Maybe it's a power conditioner of some sort? Step-up transformer? It takes 240v in, and I am unsure of the output/computer input. The power supply is a nondescript box with breakers and outlets on the back. I'll know more when I can pull the covers off it. The disk drive was simple to move, it was a slim little rack, 44" tall, with two drives in it - they appear to be Diablo style drives. Amazingly simplistic mechanisms. Looks more like a giant floppy drive than a removable platter hard drive. Exposed heads and very few boards on the drives. There's a controller interface board on the bottom of the rack that they plug into. I was more concerned with moving the computer than inspecting it, but I don't recall seeing any kind of standard looking interface ports. I believe that the B80 can support extra terminals, but I don't see it. Hopefully, when I get it going, I can connect something external to it and back up the disk packs. I have 11 packs, at least one of which is the operating system, MCP. And yes, this computer predates Tron. I do not have any manuals for the machine. There are some documents on Bitsavers, so hopefully some will be close enough for me to figure it out. -Ian