# Little Sound Dj: matching Game Boy disassembly and C recovery

> The LSDj project reconstructs Little Sound Dj 9.4.0 with symbol maps, matching C functions and an RGBDS assembly tree generated from the user's ROM. Its tools trace reachable code, recover code/data boundaries and compare rebuilt bytes; documentation covers the music data model, save format and link-cable synchronization.

- Type: Case study
- Targets: App
- 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/gmoben/lsdj-decompiled>
- Primary source: <https://github.com/gmoben/lsdj-decompiled/blob/96bdca6a2d7d5aeb25d38ba23df85f3a8cb44287/README.md>
- Catalog page: <https://awesomerea.org/resources/lsdj-9-4-0-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/lsdj-9-4-0-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/lsdj-9-4-0-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** Requires the user's copy of the LSDj 9.4.0 ROM.
- **Prerequisites:** Requires RGBDS v1.0.1, make and Python 3; matching C also uses the recovered GBDK/SDCC toolchain.
- **Limits:** The C reconstruction is partial; the author reports 678 matching functions.
- **License:** MIT license.

## Primary sources

1. <https://github.com/gmoben/lsdj-decompiled/blob/96bdca6a2d7d5aeb25d38ba23df85f3a8cb44287/README.md>
2. <https://github.com/gmoben/lsdj-decompiled/blob/96bdca6a2d7d5aeb25d38ba23df85f3a8cb44287/LICENSE>

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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.