Seeing his list of restored devices, including an HP2645, recalled to me how we hacked the original HP2640A glass teletypes to turn them into little desktop computers. 2640s came with a set of self-tests that you could run from an HP3000 minicomputer. Didn't take us kids long to figure out that the role of the HP3000 was to download a string of bytes representing 8008 code, that the terminal ran to test itself. They had 1K byte and 4k byte memory cards in the terminal. So we reverse engineered the 8008s interface to the screen and keyboard IO system, and were soon building little screen games. This was 2 years before the Apple II debuted, and when the only "home" computers you could get were big boxes like the Altair 8800. We basically had stumbled across the PC, but weren't smart or ambitious enough to do anything besides play dumb screen games with it.