A work-in-progress NES emulator written for Wayland, written in C.

All code is licensed under GPLv3. All documentation is licensed under CC BY-SA 4.0.

Currently the emulator passes all nestest CPU tests. Most PPU tests pass (NMI timing and Sprite 0 Hit), see test/ppu directory.

• CPU
  • Add two ABS X/Y illegal opcodes
  • AXS instruction ($CB)
  • Add more automated testing
• PPU
  • Use proper shift registers
• APU
  • ALSA
  • Pulse (optional)
• Mappers
• Controller support
  • PS4 controller
    • Enumerate input devices
  • Xbox One controller
  • Joy-con controller
• Console
  • Limit to 60 FPS (Wayland doesn't seem to?)

• [Nintendo Entertainment System Architecture] 1
• [6502 Instruction Reference] 2
• [6502 Undocumented Opcodes] 3
• [Extra Instructions Of The 65XX Series CPU] 4
• [Programming with unofficial opcodes] 5
• [NMOS 6502 Opcodes] 6