I did that in the early 90s. Was only a 4-bit job but it mostly worked! Edit: it only ever ran one program which was to count to 99. There is a whole community

I did that in the early 90s. Was only a 4-bit job but it mostly worked! Edit: it only ever ran one program which was to count to 99. There is a whole community of these machines: https://www.homebrewcpuring.org https://www.homebrewcpuring.org