José Luis Caravaca Carretero e604fb606d Fix pak size-collision that crashed Quake right after the intro demo (#187)
* [Tests] Add SharpEmu.Libs.Tests project

Introduce an xunit project for the HLE libs with a minimal ICpuMemory fake,
so library-level exports and helpers can be exercised without a live guest.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* [Ampr] Disambiguate pak size-collisions by read locality

PakDirectoryTracker resolves a sequential AMPR read (offset -1) back to an
absolute pak offset by matching the requested byte count against the PACK
directory. When several files share that byte count it took the first
unconsumed match in directory order, which mis-resolves out-of-order reads:
progs/h_ogre.mdl and bots/navigation/death32c.nav are both 0x3A34 bytes, and
death32c.nav sits earlier in the directory and is never read during Quake's
intro demo, so requesting h_ogre.mdl returned the nav file's bytes. The engine
then parsed "NAV2" as a brush model, failed the version check and aborted.

Pick the unconsumed same-size entry nearest the running read cursor instead.
id archives cluster related assets and the guest streams them with locality,
so this lands on the intended file; contiguous same-size runs (the
gfx/weapons/ww_*.lmp icons) still resolve in packed order.

Verified against a Quake dump: the abort is gone, h_ogre.mdl reads correctly,
and the intro demo reaches its main loop and renders instead of dying at the
error dialog.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-15 01:49:41 +03:00
2026-03-11 15:48:28 +03:00
2026-07-13 12:48:36 +03:00

SharpEmu

An experimental PlayStation 5 emulator for Windows, Linux and macOS.

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Warning

Currently the primary development target is Windows.

Warning

SharpEmu is an experimental PS5 emulator developed from scratch in C#. The current focus is on accuracy and infrastructure setup rather than game-specific compatibility.

Info

SharpEmu is an emulator project currently in its early stages of development.

This project is developed purely for research and educational purposes. There are no commercial goals associated with it. We enjoy learning about system architecture and reverse engineering.

SharpEmu focuses exclusively on the PlayStation 5.
Our goal is not to emulate PS4 games, as there is already an excellent emulator dedicated to that platform: ShadPS4.

Status

The emulator can currently load the eboot.bin of real games, execute native CPU instructions, and partially handle kernel-related functionality. However, several critical components are still missing.

Current capabilities include:

  • Loading eboot.bin and .elf files
  • Executing native CPU instructions
  • Reading basic game metadata (title, version, etc.)
  • Loading system modules (prx / sys_module)
  • Partial support for some kernel functions
  • Fiber and AMPR exports
  • PlayGo scenarios
  • Initial loading game files
  • Shader/resource submits and AGC initial
  • Video outputs in some games

Some games have reached like sceVideoOut and AGC stages.

Currently the project primarily targets Windows. Cross-platform support (Linux and macOS) is planned, but development is currently focused on Windows to simplify early-stage debugging and iteration.

Using

  • Build or Publish project or download in release tab.
  • Open Powershell.
    • Run Emulator GUI.
    • Or command: .\SharpEmu "eboot.bin" 2>&1 | Tee-Object -FilePath "log.txt"

Games Tested

Important

This project does not support or condone piracy.
All games used during development and testing are dumped from consoles that we personally own.
Users are expected to use legally obtained copies of their games.

Build

  1. Install the .NET SDK.
  2. Clone the repository: git clone https://github.com/par274/sharpemu.git
  3. Open the solution file (SharpEmu.slnx) in VSCode.
  4. Build the project: dotnet build or dotnet publish
  5. Build artifacts will be located in the artifacts directory.

Disclaimer

SharpEmu is an experimental emulator intended for research and educational purposes.

This project does not contain any copyrighted system firmware, game data, or proprietary PlayStation assets.

Special Thanks

The following projects were extremely helpful during development:

  • ShadPS4
    Helped with understanding the basic architecture of the PlayStation 4.

  • Kyty
    One of the few PS5 emulator projects available and very useful for studying native code execution.

  • Ryujinx
    Provided valuable references for filesystem handling and low-level C# implementation patterns.

License

Contributing

Before opening an issue or pull request, please read our contribution guidelines:

CONTRIBUTING.md

The guide covers:

  • Coding style and formatting
  • AI-assisted contributions
  • Pull request expectations
  • Testing guidelines
  • Legal and reverse engineering policy
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