I used the bidirectional ports on the Atari 800 and C64 to cross compile for C64 because The Atari Macro Assembler was much better than anything on the C64 at t

I used the bidirectional ports on the Atari 800 and C64 to cross compile for C64 because The Atari Macro Assembler was much better than anything on the C64 at the time :P