What is the Apple YACC?

Has anyone ever heard of the Apple YACC, or YACCintosh? it was a 68010 prototype mac intended to do colour in 1986. Weirdly enough someone managed to find the ROMs *and* the PALS for it, but no schematics have turned up yet.

All of the stuff is on bitsavers.

I do not know what to add here. This seems to be one of the most obscure – if not the most obscure – Apple efforts out there, as there are virtually zero references of it online.


  1. 2023-01-21 3:43 pm
    • 2023-01-23 5:43 am
      • 2023-01-23 8:30 am
  2. 2023-01-23 8:39 am
  3. 2023-01-23 3:37 pm