After playing with so many high level languages it feels good sometimes to go low level again. I used to like 6502 assembly a lot but I never did anything big with it. So I try to solve at least some of the Advent of Code 2016 challenges just in 6502 assembly to remember these good times.
To build you need to have the xa cross-assembler installed. Just
issuing make should take care of it then. The .prg output files
should be runnable on a C64 emulator. E.g. to run them in VICE you can
issue the command
x64 day1-part1.prg
Since .prg files are quite small (usually smaller than the source
itself) I also include them into this repository for convenience so
you don’t necessarily have to build them yourself.
Currently the problem input is hardcoded, so you have to change the source and rebuild to try out other inputs. But I’m thinking about implementing other options.