# LSD: Dream Emulator: partial PS1 decompilation and mechanics research

> lsddecomp is an early decompilation of selected code from the PlayStation game LSD: Dream Emulator, with research on its dream timer. Its workflow extracts game data from the user's SLPS_015.56 file, rebuilds the executable and compares the result; the author describes the decompilation as assumption-heavy.

- 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/FirecatFG/lsddecomp>
- Primary source: <https://github.com/FirecatFG/lsddecomp/blob/c677d8f4e5dfc2a750f6d97dbd45e846ef1c2f01/README.md>
- Catalog page: <https://awesomerea.org/resources/lsddecomp-case/>
- Record JSON: <https://awesomerea.org/resources/lsddecomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/lsddecomp-case/index.md)

## Requirements & limits

- **Prerequisites:** The SLPS_015.56 file from a personal LSD CD-ROM is required.
- **Prerequisites:** The documented setup uses Ubuntu or WSL2 with MIPS GCC, Python 3, make, and git.
- **Limits:** The author describes symbol names as manually assigned or inferred and the decompilation as assumption-heavy.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/FirecatFG/lsddecomp/blob/c677d8f4e5dfc2a750f6d97dbd45e846ef1c2f01/README.md>
2. <https://github.com/FirecatFG/lsddecomp/blob/c677d8f4e5dfc2a750f6d97dbd45e846ef1c2f01/research-docs/DreamTimer.md>

## More in Games

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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.