On Mon, 2021-06-21 at 06:02 -0700, jim stephens via cctalk wrote: > That 1620 would have been a fantastic addition to their running > display. Much easier to work on than what it sounds like the 1401 is. > And with a duplicate backup.
CHM has a 1620 that was running for a while. IIRC, somebody told me that the reason it stopped running was a damaged fan in the core memory. Nobody explained why that was a real problem. They didn't get a 1622, so they built a PC interface that made the appropriate noises when cards were being "read" and "punched". I don't know whether their PDP-1 still works. Several years ago, they let me play "Space War" for a few minutes. Watching it load from a stack of fan-folded paper tape was half the fun.
