I am working on using PicoDrive to play a few SEGA CD games (both Europe) that I recently copied over from my laptop to my GCW Zero. However, since both my files are in ISO format, with MP3s for CD audio, I need to use version 1.35 to get the CD audio working in that way, as it doesn't work in the later versions.
But how do I set up PicoDrive 1.35 to recognize the BIOS files? I have the BIOS files, but I don't know how to use them with PicoDrive 1.35. In the options menu, the options aren't changeable, and say NOT FOUND all the time. In the later versions, this is done by loading the BIOS file and then selecting the "change disk" option, and then resetting the game, but version 1.35 just treats it like a normal ROM. So, how do I get the BIOS to work in PicoDrive 1.35? Is there a specific directory, and/or name that I need?