Comment by grishka
Oh, I visited it in 2015. There were some very odd-looking huge boards with pins inserted into them that I assumed were ROMs. Also panels that were clearly intended to display some part of the state of the CPU. Here's some pictures I took:
https://sun9-70.userapi.com/impf/c621621/v621621231/20f0d/vL...
https://sun9-67.userapi.com/impf/c621621/v621621231/20f5d/i8...
https://sun9-28.userapi.com/impf/c621621/v621621231/20f53/cf...
edit: these ROM "cassettes" appear in the video at around 12:40
Yeah... those are the "constants value" generators... those who initally were shipped with non-magnetic pins, those of the "prank".