Case study

libElysianVMU: reconstructing the Dreamcast Visual Memory Unit

libElysianVMU reconstructs the Sega Dreamcast Visual Memory Unit as a C17 emulator core. It models the VMU CPU, memory, display, buzzer, and flash filesystem, supports official BIOS images, and handles VMU formats including VMI, VMS, DCI, and DCM. The repository also contains instruction-set, memory-map, and file-format documentation.

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

Stars: 77
Last commit: 2026-10-24
Language: C
License (GitHub): MIT

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: Building requires CMake and initialized Git submodules.
Limits: Microsoft Visual Studio support is a work in progress.
License: MIT license.

Cite

BibTeX

@misc{libelysianvmu-case,
  title = {{libElysianVMU: reconstructing the Dreamcast Visual Memory Unit}},
  howpublished = {\url{https://github.com/gyrovorbis/libevmu}},
  url = {https://github.com/gyrovorbis/libevmu},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/libelysianvmu-case/}}
}

Plain text

libElysianVMU: reconstructing the Dreamcast Visual Memory Unit. https://github.com/gyrovorbis/libevmu (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/libelysianvmu-case/

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Primary sources

README.md GitHub · gyrovorbis/libevmu · Revision 2b15502