The Bozos' own toolchain for native PC ports of PlayStation 2 games: a static recompiler for the game's EE code, and a runtime that answers the game's calls with native PC code. No PS2 hardware at any level: no GS, no VU, no VIF/GIF, no DMA controller, no IOP, no SPU2. What the game draws goes to a native renderer; what it plays goes to a native mixer; what it reads, saves and polls comes from native implementations of the libraries it calls.
Status: Twisted Metal: Black runs on it, in a window (SDL3, OpenGL 3.3) at 60 fps, with pads for 1 to 4 players and sound, from the boot through the menus, matches and the story. Its menus and settings panel are being finished; the release moves to BozoEngine once the comparison with the current build is clean. See docs/PLAN.md.
- Own it. Code written by The Bozos, MIT-licensed, nothing copied from other projects (see "Clean room" in the plan).
- Native by construction. There are no emulation layers to route around: the runtime implements Sony's libraries at the call the game makes (read the pad, open a file, play a movie), not the chips below them.
- Proved against what works. Every step is checked against recordings of the current build: the same game state, calls, threads and draw lists, frame by frame (boot and a full match, 74 million recorded calls, 0 differences).
| Folder | What |
|---|---|
recompiler/ |
bozo-recomp: ELF loader, function discovery, R5900 (EE) to C++ translation |
runtime/ee/ |
The EE kernel (threads, semaphores, interrupt handlers) and the dispatcher |
runtime/libs/ |
Native Sony libraries: libc/libm, pad (multitap), memory card, CD/DVD, libmpeg (FFmpeg), GS library, VU0 programs, SIF, the 989SND sound driver |
runtime/render/, runtime/audio/ |
The native renderer (OpenGL 3.3) and mixer |
runtime/app/, runtime/host/, runtime/port/ |
Window, input and settings (SDL3); the real-time host; the API a port's own code uses |
tools/ |
The checkers (run, replay), the pack writers (native_pack), externals, capture and IRX readers, branding |
tests/ |
Instruction, library, audio and runtime tests |
reference/ |
Hashes of the reference runs the checks compare against (no game data) |
docs/ |
The plan, the specs the code is written from, the branding |
tools/branding/make_logo.py makes The Bozos' logos for any port: python make_logo.py port <name> "<TITLE>" "<SUBTITLE>" [fire] (--help).
MIT, see LICENSE. Game data is never part of this repository: every port builds from the player's own disc.
By The Bozos (boubou666 and Arzaroth).