StarPSX

StarPSX is a free and open-source PlayStation 1 emulator written in Rust.
This project is highly work in progress and not suitable for playing games yet.

Project Structure

The project is split into three crates:

• core
  A library crate that hosts the main emulator functionality.

• renderer
  A software rasterizer written from scratch.
  This is a library crate used by core for drawing to a framebuffer.
  In the future, support for switchable renderers is planned (e.g. software vs hardware backends).

• frontend
  The main binary crate that provides the frontend GUI.
  Currently, it uses a basic winit + softbuffer window for output.
  The long-term plan is to integrate a fully featured GUI framework.

Component Status

• CPU
• GPU
• DMA
• CDROM
• SPIO
• SPU
• GTE
• MDEC

Current Status

StarPSX is in the very early stages of development.
At the moment, it can boot the BIOS and run some basic test roms.

Build Instructions

cargo build --release

Running Instructions

cargo run --release -- <path/to/bios> <path/to/exe>(optional)

• <path/to/bios> should point to a valid PlayStation BIOS image.
• <path/to/exe> is optional and can be used to sideload an EXE file.

Dependencies

StarPSX depends only on the Rust toolchain. The project aims to avoid external dependencies and remain self-contained.

Special Thanks

• psx-spx for their wonderful PlayStation documentation
• jsgroth's PSX blogs for detailed write-ups on PSX emulators.
• DuckStation for comparing correct behaviors
• The folks over at the EmuDev Discord for always being helpful
• PeterLemon and Amidog for their invaluable test ROMs