OCamNes

Yes. Yet another NES Emulator.

Currently passes the Nestest suite up to unofficial opcodes.

Controls

Q, Escape -> Quit
Arrow keys -> Left, down, up, right
Z: A button
X: B Button
Return -> Start
Left Shift -> Select
S -> Saves a screenshot as screenshot.png
Apostrophe -> Start the debugger

Games running mostly glitch-less:

Super Mario Bros
Donkey kong
Balloon fight
Lode runner
Contra
Gradius

How to build

dune build
opam install . --deps-only
dune exec ./bin/main.exe

TODO

Mappers (only NROM/UxROM/CNROM are supported)
PPU
- Special flags to stop rendering sprites at the edge
IRQ (Not sure if they're used anywhere)
APU
Second controller
Unofficial opcodes
Load/Save state
Better debugger and logging
Remap controls
CLI args