I don’t have to tell you anything about Commodore and their famous line of computers. At one point of my life, I used more or less all of them. The PETs, the VIC20, C64, C128 and even a bit of AMIGA, even that gang would call me an ATARI-boy 😉
So it’s obvious I had to do some things for it… and a Transputer interface was actually my first piece of hardware I made.