Minimal NES Emulator

Status

• First-gen games such as Pacman and Super Mario Bros are playable
• Audio doesn't work - APU is not implemented
• CPU supports official and unofficial opcodes
• PPU is minimal, non-basic games don't work

Bugs:

• Sprite 0 hit doesn't seem to properly work
• Sprite priority is not properly implemented

How to run

cargo run --release -- path/to/rom.nes

Keys Mapping

WASD or Arrows => Up,Left,Down,Right
B              => Select
V              => Start
J              => A
K              => B

Screenshots

NES is a trademark of Nintendo of America Inc.

Based on

• https://www.nesdev.org
• https://www.nesdev.org/obelisk-6502-guide
• http://www.ffd2.com/fridge/docs/6502-NMOS.extra.opcodes
• https://bugzmanov.github.io/nes_ebook/index.html
• http://www.righto.com/2012/12/the-6502-overflow-flag-explained.html
• https://github.com/LucaDavidian/NES-emulator