Case study

PictoChat: a matching DSi system-title decompilation

PictoChat's standalone DSi system title is being reconstructed as matching C source for its ARM components. The workflow extracts a player's own title and BIOS dumps, compiles candidate functions with mwccarm and compares bytes with relocation awareness. The author reports 1,048 matched functions out of a current estimate of 1,551.

Targets: App · Binary
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06

Stars: 9
Last commit: 2026-10-23
Language: C
License (GitHub): MIT

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: User-supplied PictoChat title and ARM7 BIOS dumps are required.
Prerequisites: The matching workflow uses the mwccarm 2.0 toolchain and documented Python packages.
Limits: The decompilation is incomplete; the dsd configuration is not yet populated.
License: MIT License for the repository's original work.

Cite

BibTeX

@misc{pictochat-dsi-decomp-case,
  title = {{PictoChat: a matching DSi system-title decompilation}},
  howpublished = {\url{https://github.com/tangOS-decomps/pictochat-decomp}},
  url = {https://github.com/tangOS-decomps/pictochat-decomp},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/pictochat-dsi-decomp-case/}}
}

Plain text

PictoChat: a matching DSi system-title decompilation. https://github.com/tangOS-decomps/pictochat-decomp (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/pictochat-dsi-decomp-case/

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About this entry

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Primary sources

README.md GitHub · tangOS-decomps/pictochat-decomp · Revision 4e71dce
LICENSE GitHub · tangOS-decomps/pictochat-decomp · Revision 4e71dce
config/README.md GitHub · tangOS-decomps/pictochat-decomp · Revision 4e71dce