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Case study

OB64 Decomp: matching Ogre Battle 64 from MIPS assembly to C

Reconstructs the US Rev 0 release of Ogre Battle 64 from source-owned MIPS assembly, replacing accepted functions with C that matches linked bytes and the full ROM. Its workflow records compiler and relocation constraints, tests each replacement, and keeps the original ROM and toolchains outside the repository.

Targets
Game
Category
Independent reconstruction cases
Relationship
Independent reconstruction project
Sources reviewed
Evidence class
C2 code & docs, no demo or download
Stars
1
Last commit
2026-11-04
Language
Assembly
License (GitHub)
MIT

GitHub data as of 2026-11-10

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Evidence

Observed
Code and documentation observed; no download method or demo found.
Checked
2026-11-09

How evidence classes are assigned

Requirements & limits

  • Prerequisites: A legally obtained Ogre Battle 64 US Rev 0 ROM is required; US Rev 1 is outside the project's scope.
  • Prerequisites: The documented matching setup uses Windows, Node.js, a pinned KMC GCC 2.7.2 toolchain, Splat, and GNU Binutils.
  • Scope: Semantic identification remains separate from byte-matching progress.
  • License: MIT License.

Cite

BibTeX

@misc{ogre-battle-64-decomp-case,
  title = {{OB64 Decomp: matching Ogre Battle 64 from MIPS assembly to C}},
  howpublished = {\url{https://github.com/rempred/OB64-Decomp}},
  url = {https://github.com/rempred/OB64-Decomp},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/ogre-battle-64-decomp-case/}}
}

Plain text

OB64 Decomp: matching Ogre Battle 64 from MIPS assembly to C. https://github.com/rempred/OB64-Decomp (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/ogre-battle-64-decomp-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

  1. README.md GitHub · rempred/OB64-Decomp · Revision 0b972a7
  2. LICENSE GitHub · rempred/OB64-Decomp · Revision 0b972a7

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