Hi Mr. schtruck please support the bios clone of no$psx v2.0 by nocash, it's freeware you can readily upload it in your pc through the utility function of the emulator. There are some successful attempts of using it in a real hardware from the assemblergames forum. Nocash said it should work in all emulators but if the emulator you're using requires you to put 512.00k bios file, you need to edit his bios clone by copying the lower
and upper half of the file using hex editor (black screen in fpse). According to him it's written entirely in ASM. The size of the bios is 256.00k so it's not compatible to fpse. Advantages of this bios, it's freeware you don't need to dump bios anymore from a real psx hardware, minimalistic gui (for me the official sony memory card manager gui is quite obnoxious), faster memory card access, built-in vcd player, etc.
Bug reports is also helpful to him you could send it through his email account from his official site or message him in nesdev forum.