There are tons of 6502 assemblers out there. It's a pretty easy processor to work with. I wrote maybe half a dozen assemblers back in the day (each one better t

There are tons of 6502 assemblers out there. It's a pretty easy processor to work with. I wrote maybe half a dozen assemblers back in the day (each one better than the last). On a lark, I wrote one in Python a couple of years ago; it's on github (https://github.com/landondyer/kasm https://github.com/landondyer/kasm).