An NES emulator using SDL2 written in Zig.

Made mostly for fun. Not very accurate, and only supports mappers 0, 1, and 2 for now.

CPU and PPU emulation are decent enough to run Super Mario Bros or The Legend of Zelda without issue. APU emulation is still rather incomplete, and does not support DCM samples.

Many thanks to the contributors of the NESDev Wiki.

Build requirements: Zig compiler, SDL2 library in a system-wide location

Controls: (for non-QWERTY layouts: same key position but different key)

• P: Pause/unpause
• O: Show debug menu
• I: Step by a single frame
• U: Step by a single CPU instruction
• WASD: Up/Left/Down/Right
• L: A button
• K: B button
• J: Start button
• H: Select button

Install:

zig build install [-p location]

Run from source:

zig build run -- <ROM path>

Run automated CPU test (NESTest.nes):

zig build nestest