RE: https://techhub.social/@theoasisbbs/116086098666934794
I've been idly thinking about porting UNIX to the Color Computer 3 or Commodore 64.
There's a lot of PDP-11 assembly in the early releases which would need to be ported to C, though several were later rewritten in C. The assembler was ported to C in V8 and with all the time I've spent reading all its versions, it wouldn't be difficult to adapt it for a different architecture. But all the peripherals would be different, so I'd need to write a bunch of drivers. UNIX V7 or later would probably be easiest, as it had been generalized for porting at that point.