You could JSR $FDD2 instead and it would work on any Commodore computer. https://en.wikipedia.org/wiki/KERNAL https://en.wikipedia.org/wiki/KERNAL Most Commod

You could JSR $FDD2 instead and it would work on any Commodore computer. https://en.wikipedia.org/wiki/KERNAL https://en.wikipedia.org/wiki/KERNAL Most Commodore computer models shared a common jump table at the top of ROM for basic input and output.