nes-rs

nes-rs is an incomplete NES emulator written in Rust. The name is subject to change once I find something more catchy.

Goals

This is a list of my long term goals for the project that I do not expect to be done for a long time.

Make the emulator as accurate as possible
Automated testing of the CPU with existing test roms (mostly done)
Automated testing of the PPU (frame by frame compare)
RPC-like api to allow external scripts change the emulator state
Full featured debugger accessible through a command-line interface or network

Building and Running

For now the only dependency is rust itself, however this is subject to change once I start working on the PPU and I plan to use SDL.

Current Progress

I am currently working on the CPU which is mostly done at this point. The CPU is automatically tested against the nestest ROM with Nintendulator logs in order to create a somewhat accurate CPU (Nintendulator is regarded as highly accurate). However the implementation of undocumented opcodes is not a high priority for me right now.

Once the CPU work is done, I'll begin working on the PPU and proper power reset functionality. Before or after that's done I might implement an interactive remote debugger if I need to debug any complex problems as the machine state cannot be inspected at this time.