# Mother: a checksum-checked Famicom/NES disassembly

> Mother reconstructs the Famicom/NES game as assembly for its Japanese release and English localization. Configuration splits banks and version-specific assets from user-supplied ROMs; build scripts produce NES 2.0 ROMs and compare their checksums with the selected originals. The assembly separates game data, object scripts, vectors, music, and other code.

- 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/Nathan-R-Og/mother>
- Primary source: <https://github.com/Nathan-R-Og/mother/blob/e0b3e3f2463413aaf2915ae3264bfd00b782f5e4/README.md>
- Catalog page: <https://awesomerea.org/resources/mother-nes-disassembly-case/>
- Record JSON: <https://awesomerea.org/resources/mother-nes-disassembly-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/mother-nes-disassembly-case/index.md)

## Requirements & limits

- **Prerequisites:** Python and cc65 are required; the instructions cover Windows and WSL2 Ubuntu.
- **Prerequisites:** Supply a supported Japanese Mother or English Earthbound Beginnings ROM.
- **Limits:** The author says substantial work remains, especially for the Japanese version and symbol naming.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/Nathan-R-Og/mother/blob/e0b3e3f2463413aaf2915ae3264bfd00b782f5e4/README.md>

## More in Games

- [Moto Racer World Tour: matching PlayStation code and file-format research](https://awesomerea.org/resources/moto-racer-world-tour-case/index.md) · Case study
- [Motocross Madness 2: VC6-matched C++ reconstruction](https://awesomerea.org/resources/motocross-madness-2-decomp-case/index.md) · Case study
- [Mulberry: matching source decompilation of Kuon](https://awesomerea.org/resources/mulberry-kuon-case/index.md) · Case study
- [MVP Baseball 2005: matching GameCube decompilation](https://awesomerea.org/resources/mvp-baseball-2005-decomp-case/index.md) · Case study
- [My Teacher is an Alien: Windows 95 source reconstruction](https://awesomerea.org/resources/my-teacher-is-an-alien-case/index.md) · Case study
- [Nagano Winter Olympics '98: matching Nintendo 64 decompilation](https://awesomerea.org/resources/nagano-winter-olympics-98-decomp-case/index.md) · Case study

## 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.