Case study

FROGMAN: an annotated BBC Micro disassembly

FROGMAN reconstructs a BBC Micro platform game as annotated 6502 BeebASM source. The author dumped memory after the encrypted loader ran in an emulator, disassembled and labeled the game code, and reports byte-exact reassembly. The repository also documents memory layout, level maps, and the loader's XOR chain.

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

Stars: 4
Last commit: 2026-10-23
Language: Python
License (GitHub): MIT

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: BeebASM and Python 3 with Pillow are required for the build.
Testing evidence: The author reports a byte-exact rebuild of the decrypted game code.
License: MIT.

Cite

BibTeX

@misc{frogman-bbc-micro-case,
  title = {{FROGMAN: an annotated BBC Micro disassembly}},
  howpublished = {\url{https://github.com/mattgodbolt/frogman}},
  url = {https://github.com/mattgodbolt/frogman},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/frogman-bbc-micro-case/}}
}

Plain text

FROGMAN: an annotated BBC Micro disassembly. https://github.com/mattgodbolt/frogman (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/frogman-bbc-micro-case/

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Primary sources

README.md GitHub · mattgodbolt/frogman · Revision 33ce46e
DIARY.md GitHub · mattgodbolt/frogman · Revision 33ce46e
Makefile GitHub · mattgodbolt/frogman · Revision 33ce46e