Sega CD Bios Location

Emulators
1

I’ve had a very difficult time getting bios files to work for Genesis Plus GX or PIcoDrive to play Sega CD Games. I have tried placing the drivers in a folder named bios in the games directory. I have tried placing them in the System folder under the RetroArch Directory. I know the naming convention is different for either emulator. But what is the proper location for these Bios files? Thanks for any help anyone can give.

1 Like
2

Hi Kshelton71,
BIOS goes in /home/cpi/.config/retroarch/bios/ for RetroArch cores on GameSH>, don’t worry about console specific folders or anything.

3

Thanks for the info. Still having some issues with getting my Sega CD games to run however in either Sega Genesis emulator. Looks like it’s back to research. Thanks again.

4

Yeah, I’ve run into some problems myself, Snatcher seems to run fine on genesis plus gx, but Sonic CD hangs. I don’t have a lot of Sega CD games to test out, but may end up trying some different cores and seeing what works.

5

Sorry for the necropost, but i’m having issues with using the picodrive 1.92 standalone. I’ve put the SegaCD bios files in a number of locations, but still won’t be able to load the roms. Any ideas on specific locations?

6

maybe ~/.picodrive/ ?

7

Unfortunately not, i even made a BIoS folder in there, too. No luck

8

https://github.com/notaz/picodrive/blob/master/platform/base_readme.txt#L44

To play any CD game, you need BIOS files. These files must be copied to the same directory as PicoDrive files.
Files can be named as follows:

US: us_scd1_9210.bin us_scd2_9306.bin SegaCDBIOS9303.bin
EU: eu_mcd1_9210.bin eu_mcd2_9303.bin eu_mcd2_9306.bin
JP: jp_mcd1_9112.bin jp_mcd1_9111.bin
these files can also be zipped.
2 Likes