Case study

Doraemon: a byte-identical Famicom source reconstruction

Doraemon reconstructs the Japanese release of Hudson Soft's 1986 Famicom game as ca65 assembly source. The build extracts private assets from the user's ROM, assembles and links the source, then compares the resulting ROM byte for byte with the original. Documentation covers cartridge architecture, memory, subsystems, and data formats.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06

Stars: 1
Last commit: 2026-11-06
Language: Assembly

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: The Japanese Doraemon PRG0 ROM must be supplied by the user.
Prerequisites: Python 3, GNU Make, and Retrolarium Kit are required to build and compare the ROM.
Limits: Relocating modules is unsupported because some pointer tables still contain raw addresses.
License: No licence file in the repository.

Cite

BibTeX

@misc{doraemon-nes-source-reconstruction-case,
  title = {{Doraemon: a byte-identical Famicom source reconstruction}},
  howpublished = {\url{https://github.com/RetrolariumLab/doraemon_src}},
  url = {https://github.com/RetrolariumLab/doraemon_src},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/doraemon-nes-source-reconstruction-case/}}
}

Plain text

Doraemon: a byte-identical Famicom source reconstruction. https://github.com/RetrolariumLab/doraemon_src (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/doraemon-nes-source-reconstruction-case/

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About this entry

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Primary sources

README.md GitHub · RetrolariumLab/doraemon_src · Revision 28a266d
Makefile GitHub · RetrolariumLab/doraemon_src · Revision 28a266d