I wrote a decently complete NES emulator[1], and the 6502 is definitely a fun CPU to emulate compared to other CPUs. The Z80-ish CPU in the Game Boy is not as f

I wrote a decently complete NES emulator[1], and the 6502 is definitely a fun CPU to emulate compared to other CPUs. The Z80-ish CPU in the Game Boy is not as fun, and as soon as you get into 68000 territory, it definitely stops being fun for a hobbyist. Getting the graphics and sound in sync with the CPU is a lot more challenging if you're looking to support many games, but if you just want to play some of the super simple early NES games, like Donkey Kong, then you can get away with a lot of inaccuracies. [1]: https://github.com/ltriant/nes https://github.com/ltriant/nes