For the playstation core of Mednafen it works. Now, I did everything from putting the bios in the same path, getting better isos and etc. It still doesn't work and it brings to the Saturn system settings where you can delete your memory card files, change the settings, and etc. No video has helped me yet and I think I have a unique problem
P.S. I made another Mednafen folder and did everything it worked and then it did the same thing to me the first time. Bringing me into the Saturn system settings. This is very irritating.