Photograph of Sega Dreamcast
Asim18 at English Wikipedia / Wikimedia Commons / Public domain

Final Sega home console. GDEMU-style ODEs, VGA, and HDMI are the core hardware mods.

Published open-source PCB projects

Other catalogued projects

Mod License Notes
GDEMU / clones Proprietary Optical-drive emulator that replaces the GD-ROM. Original is closed; many clones exist.
Dreamcast HDMI Proprietary VA0/VA1 HDMI encoder boards. Most retail kits are closed.
Dreamshell Open source (GPL-3.0-or-later) Open Dreamcast loader and ISO browser used with SD adapters.
Serial / SD adapters Mixed / partial source Broadband Adapter and serial SD loaders. Mix of open and closed boards.

Browse these projects in the 3D PCB mod directory. Open-source rows can be shallow-cloned into the git bucket. Generated board renders belong on the artifact CDN, not in git. See the catalog wiki note.