Yes, although back in my c64 programming days I knew the 6510 opcodes by heart, one didn't actually program by using machine code. You used an assembler (turbo

Yes, although back in my c64 programming days I knew the 6510 opcodes by heart, one didn't actually program by using machine code. You used an assembler (turbo assembler, those were the days). assembly: lda #00, sta $d021, sta $d020, generated machine code: a9 00, 8d 21 d0, 8d 20 d0 Anyone else remember what this would do on the c64? :)