Not a question but a suggestion. You should also do a similar article for the 8061 series processor. This was a special processor used at least in the Ford EEC-

Not a question but a suggestion. You should also do a similar article for the 8061 series processor. This was a special processor used at least in the Ford EEC-IV (Fox body Mustangs, 1990s F-150s, etc), notable for its very wacky "M-BUS" memory bus. They wanted to conserve pins (I guess for more GPIO) so they replaced the normal bus with a bidirectional 8-bit bus, with a couple registers set in the memory chip which represent the data pointer or program counter. At any point the processor can request data from either of those two pointers with a couple dedicated signals STB, IT, and DI, and the program counter pointer is supposed to auto-increment. The whole thing is a very complex pair of state machines and it'd be interesting to go over the protocol. It's been documented in a difficult-to-read Ford programmers guide, but largely unheard of otherwise.