Nintendo - NES / Famicom (RustyNES)¶
Background¶
RustyNES is a cycle-accurate Nintendo Entertainment System (NES) and Famicom emulator written entirely in pure Rust. It targets the highest accuracy bar (comparable to Mesen and higan) through strict lockstep timing at PPU-dot resolution, without relying on threading or standard library timing.
It is extremely portable and deterministic, making it a reliable choice for netplay, TAS, and accurate emulation enthusiasts.
Author/License¶
The RustyNES core has been authored by
- DoubleGate
The RustyNES core is licensed under
- MIT OR Apache-2.0
A summary of the licenses behind RetroArch and its cores can be found here.
Extensions¶
Content that can be loaded by the RustyNES core have the following file extensions:
- .nes
Databases¶
RetroArch database(s) that are associated with the RustyNES core:
Features¶
Frontend-level settings or features that the RustyNES core respects.
| Feature | Supported |
|---|---|
| Restart | ✔ |
| Screenshots | ✔ |
| Saves | ✔ |
| States | ✔ |
| Rewind | ✔ |
| Netplay | ✔ |
| Core Options | ✕ |
| Memory Monitoring (achievements) | ✔ |
| RetroArch Cheats | ✕ |
| Native Cheats | ✕ |
| Controls | ✔ |
| Remapping | ✔ |
| Multi-Mouse | ✕ |
| Rumble | ✕ |
| Sensors | ✕ |
| Camera | ✕ |
| Location | ✕ |
| Subsystem | ✕ |
| Softpatching | ✔ |
| Disk Control | ✕ |
| Username | ✕ |
| Language | ✕ |
| Crop Overscan | ✕ |
| Active Touchpad | ✕ |
Directories¶
The RustyNES core's directory name is 'RustyNES'.
BIOS¶
No BIOS files are strictly required to use the RustyNES core.
Joypad¶
| User 1 - 2 input descriptors | RetroPad Inputs |
|---|---|
| B |  |
| A |  |
| Select |  |
| Start |  |
| D-Pad Up |  |
| D-Pad Down |  |
| D-Pad Left |  |
| D-Pad Right |  |