DGen/SDL
DGen/SDL emulates Sega Mega Drive and Sega Genesis.
About this profile
Technical notes
Mega Drive emulator for SDL by Joe Groff and Phil K. Hornung, carried on by zamaz. Release 1.33 is the v1.33 tag of the project's git tree. It emulates the 68000, the Z80, the VDP, the YM2612 and the SN76489 and nothing more: the tree holds no SH-2, no Sega CD hardware and no TMSS boot ROM.
A cartridge is opened as given, then under the roms subdirectory of the DGen home ($HOME/.dgen), or under str_rom_path when the configuration sets one. It is unpacked through libarchive when compressed, de-interleaved when it is an SMD dump, and refused unless "SEGA" stands at offset 0x100. ref: romload.c:14-19,47-124, system.c:293-340, system.h:23-24, rc.cpp:554-560
The only other files read are dgenrc, save states, battery RAM and demos, all written by the emulator itself under the DGen home. ref: main.cpp:132-196,352-366, system.h:45-47
No BIOS or firmware files required.
Next steps
Section titled “Next steps”- Get your files, for the setup you play on
- Every system, and the files each one needs
- When a game does not start