GameCom GameCom is an NES emulator written in a functional style. Each CPU operation is modeled as a transformation from one machine state to another. https://www.reddit.com/r/haskellgamedev/comments/4jpthu/windows_sdl2_is_now_almost_painless_via_stack/ Reference Material NES Dev Wiki 6502 Reference sprocketnes by pcwalton FCEU Nestopia