MiSTer FPGA Forum

I'm trying to play Saturn games for the first time. I dropped a few CHD files on the Saturn folder but trying to load them I get an error something like CD BIOS missing.

You need to find the bios files. They are easy to find.

Is there a separate BIOS file for each game? Where do they go?

https://github.com/srg320/Saturn_MiSTer#compatible-bios wrote:

Compatible BIOS

BIOS NOT INCLUDED: In order to use this core, you need to provide your own BIOS.

Rename your Saturn bios file to boot.rom and place it in the games/Saturn/ folder.

Console Version Region SHA1 Size Status
Sega Saturn 1.00 Japan 2b8cb4f87580683eb4d760e4ed210813d667f0a2 512 KB
Sega Saturn 1.00a USA 3bb41feb82838ab9a35601ac666de5aacfd17a58 512 KB
Sega Saturn 1.00 Europe faa8ea183a6d7bbe5d4e03bb1332519800d3fbc3 512 KB
Sega Saturn 1.003 Japan 7b23b53d62de0f29a23e423d0fe751dfb469c2fa 512 KB
Sega Saturn 1.01 Japan df94c5b4d47eb3cc404d88b33a8fda237eaf4720 512 KB
Sega Saturn 1.01a USA faa8ea183a6d7bbe5d4e03bb1332519800d3fbc3 512 KB
Hitachi Hi-Saturn 1.01 Japan 49d8493008fa715ca0c94d99817a5439d6f2c796 512 KB
Hitachi Hi-Saturn 1.02 Japan 8a22710e09ce75f39625894366cafe503ed1942d 512 KB
Hitachi Hi-Saturn 1.03 Japan 8c031bf9908fd0142fdd10a9cdd79389f8a3f2fc 512 KB
Victor V-Saturn 1.01 Japan 4154e11959f3d5639b11d7902b3a393a99fb5776 512 KB

Note: You can also place a file named cd_bios.rom in the same directory as the CD image. This can be used for games that depend on a specific BIOS.

There is a bios for each version of the Saturn e.g. for EU, Japan, USA.

Put them in the folder games\Saturn then load one and a corresponding game from that region.

Got it. In that case is Saturn compatible with the gamesmenu script? I don't think gamesmenu would know how to match rom and bios.

BTW is there a favorite source for Saturn stuff on Archive? I'm having trouble finding something that doesn't nearly always end in a failed download.

You could search for a region free bios and see if that works.

misterrocks wrote: ↑Mon May 13, 2024 5:51 pm

BTW is there a favorite source for Saturn stuff on Archive? I'm having trouble finding something that doesn't nearly always end in a failed download.

https://archive.org/details/chd_saturn

That looks like a great one for CHD files. I don't see any BIOS files there though. I tried searching but nothing relevant came up. Where do you find those?

I don’t think anyone is going to link directly to BIOS files. I could be wrong.

If you search the archive you’ll find them.

I use only one hi-saturn region free, never had any problems

see the text part with digits and letter 2b8cb4f87580683eb4d760e4ed210813d667f0a2 search using those in a search engine if you come along on say something like github you may need to download as a zipfile

those are called hashes make them easier to find

BTRF-1.03-0H-950720-JPN-HISATURN-[dev][rf].bin if you want to make it easier as people say it region free

Found some BIOSes and got it working with some US ROMs. I will see if Japanese ROMs work and then I'll see if I can load both from gamesmenu.

Everything working great!