# Calico: Atari Jaguar DOOM port with renderer reverse engineering

> Calico ports Atari Jaguar DOOM to PC while retaining the original game's behavior where possible. The author reverse engineered Jaguar-specific renderer assembly and cross-referenced gameplay assembly with related C sources; the port loads a user-supplied ROM or extracted jagdoom.wad.

- 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/team-eternity/calico-doom>
- Primary source: <https://github.com/team-eternity/calico-doom/blob/6cccd655637f5c4107ff94642364aee9a201a928/README.md>
- Catalog page: <https://awesomerea.org/resources/calico-doom-case/>
- Record JSON: <https://awesomerea.org/resources/calico-doom-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/calico-doom-case/index.md)

## Requirements & limits

- **Prerequisites:** A Jaguar DOOM ROM or extracted jagdoom.wad is required.
- **Limits:** Music and multiplayer are unavailable, and demos can lose synchronization.
- **License:** Original and 3DO-derived code uses MIT terms; Jaguar-derived code retains its original limited-use license, and calico-config uses GPL terms.

## Primary sources

1. <https://github.com/team-eternity/calico-doom/blob/6cccd655637f5c4107ff94642364aee9a201a928/README.md>
2. <https://github.com/team-eternity/calico-doom/blob/6cccd655637f5c4107ff94642364aee9a201a928/COPYING-JAG.txt>

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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.