Case study

SCD Disasm: Sonic CD disassembly

SCD Disasm reconstructs Sonic CD's Sega Mega CD program files from disassembly, initially using the V0.02 prototype. It organizes reused engine functions into shared source files with linker scripts for the disc files; the author reports that the resulting binary objects can be assembled into an ISO that runs in an emulator.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-09
Evidence class: C2 code & docs, no demo or download

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Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: A clean copy of the Sonic CD V0.02 build is needed to provide the original files and extract binary pieces.
Prerequisites: The extraction script requires the UNIX dd utility.
Limits: The extraction script has missing addresses and does not currently run as a complete workflow.
License: No licence stated on the project page.

Cite

BibTeX

@misc{scd-disasm-case,
  title = {{SCD Disasm: Sonic CD disassembly}},
  howpublished = {\url{https://gitlab.com/segaloco/scd-disasm}},
  url = {https://gitlab.com/segaloco/scd-disasm},
  urldate = {2026-11-09},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/scd-disasm-case/}}
}

Plain text

SCD Disasm: Sonic CD disassembly. https://gitlab.com/segaloco/scd-disasm (accessed 2026-11-09). Awesome REA entry: https://awesomerea.org/resources/scd-disasm-case/

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About this entry

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Primary sources

https://gitlab.com/segaloco/scd-disasm/-/blob/cef391a648fba6272588112f0a2e56515b55b10f/README.md