Case study

stf-sharc: reconstructing Sega Model 2 SHARC microcode

stf-sharc reconstructs and annotates the two ADSP-21062 microcode images used by Sega Model 2 hardware. The assembly documents COP math commands, GEO display-list commands and FIFO exchanges; the author reports that both images reassemble byte for byte to the ROM.

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

Stars: 2
Last commit: 2026-09-19
Language: Assembly

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: The g21k toolchain, gawk, a VisualDSP-to-g21k converter, Node and a ROM set are required for the documented round-trip check.
License: No licence file in the repository.

Cite

BibTeX

@misc{stf-sharc-case,
  title = {{stf-sharc: reconstructing Sega Model 2 SHARC microcode}},
  howpublished = {\url{https://github.com/biggestsonicfan/stf-sharc}},
  url = {https://github.com/biggestsonicfan/stf-sharc},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/stf-sharc-case/}}
}

Plain text

stf-sharc: reconstructing Sega Model 2 SHARC microcode. https://github.com/biggestsonicfan/stf-sharc (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/stf-sharc-case/

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Primary sources

README.md GitHub · biggestsonicfan/stf-sharc · Revision 474c90d