20 D2 FF for JSR $FFD2, which was the C-64 subroutine to output a character to the screen. Or use 4C, to JMP instead for tail-call optimization. I have a lamin

20 D2 FF for JSR $FFD2, which was the C-64 subroutine to output a character to the screen. Or use 4C, to JMP instead for tail-call optimization. I have a laminated copy, wallet-sized 6520 opcode page from an Apple II programming manual, just in case I need it.