RuNES

As we know, there have been a ton of NES emulator implementations in various kinds of languages (mostly C). All of these emulators come with different accuracy and portability. RuNES is an attempt to build a reasonably accurate (instruction level accurate), light-weight and efficient emulation core library using Rust. Unlike sprocketnes_ or pinky_, RuNES strives to provide with a clean and minimal core library without standard library (i.e., without Box, Rc, Vectors, etc.) that could be compiled and easily ported to embedded environments. Of course, a simple SDL-based GUI is also provided as a demonstration of use.

Feature

• Core library with minimal use of the Rust core crate, and zero use of std.

• Support standard 6502 instruction set (unofficial instruction will be considered in the future).

• Instruction-level accuracy with accurate CPU/PPU timing.

Guidelines

• Never use std in the core library.

• At the same time, avoid unsafe as much as possible, but use it at discretion to improve performance: remove unnecessary checks within a very localized context.

• Keep the core library code base minimal.

.. _sprocketnes: https://github.com/pcwalton/sprocketnes .. _pinky: https://github.com/koute/pinky

Build

::

cargo build --release               # build the library only (no std dep)
cargo build --examples --release    # or build the example emulator (requires std)