Case study

osdbits: reconstructing the PlayStation 2 OSDSYS opening

osdbits reconstructs the PlayStation 2 OSDSYS opening animation as a standalone Emotion Engine program from a retail boot ROM image. It ports towers, fog, light streaks and refractive cubes, and compares output with GS dumps and savestates. The repository also includes VU microcode disassembly and notes on menu rendering; textures are extracted locally from the user's BIOS dump.

Targets: Firmware
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06

Stars: 33
Last commit: 2026-09-02
Language: C

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: A PS2 BIOS image dumped from the user's own console for texture extraction.
Prerequisites: The SCE PS2 EE toolchain with ee-gcc, ee-dvp-as and SDK at /usr/local/sce/ee.
Limits: The opening is reconstructed; the illegal disc screen lacks ROM comparison and the menu/browser is documented only.
License: No licence file in the repository.

Cite

BibTeX

@misc{osdbits-case,
  title = {{osdbits: reconstructing the PlayStation 2 OSDSYS opening}},
  howpublished = {\url{https://github.com/aap/osdbits}},
  url = {https://github.com/aap/osdbits},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/osdbits-case/}}
}

Plain text

osdbits: reconstructing the PlayStation 2 OSDSYS opening. https://github.com/aap/osdbits (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/osdbits-case/

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About this entry

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Primary sources

README.md GitHub · aap/osdbits · Revision ea0c687
docs/menu-rendering-reverse.md GitHub · aap/osdbits · Revision ea0c687