# 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.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/mattgodbolt/frogman>
- Primary source: <https://github.com/mattgodbolt/frogman/blob/33ce46e20a1fa4e929c8416a882d37f6fae2c000/README.md>
- Catalog page: <https://awesomerea.org/resources/frogman-bbc-micro-case/>
- Record JSON: <https://awesomerea.org/resources/frogman-bbc-micro-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/frogman-bbc-micro-case/index.md)

## 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.

## Primary sources

1. <https://github.com/mattgodbolt/frogman/blob/33ce46e20a1fa4e929c8416a882d37f6fae2c000/README.md>
2. <https://github.com/mattgodbolt/frogman/blob/33ce46e20a1fa4e929c8416a882d37f6fae2c000/DIARY.md>
3. <https://github.com/mattgodbolt/frogman/blob/33ce46e20a1fa4e929c8416a882d37f6fae2c000/Makefile>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.