You have two primary ways to get the files:
RetroArch is highly strict about filename conventions. The files must be placed directly into your RetroArch system directory. Standard RetroArch Filename Alternative Filename Known MD5 Checksum bios-cd-u.bin scd_bios_US.bin 2542459c20c0d1157966aa4f6b50541c Europe bios-cd-e.bin scd_bios_EU.bin b44476059296996bf4275ba31846b450 Japan bios-cd-j.bin scd_bios_JP.bin 2efda3431f41b34cd03633ab0990479d bios-cd-u.bin bios-cd-e.bin bios-cd-j.bin
Each file corresponds to one of the three major distribution regions for the console: : The BIOS for the USA region (Sega CD). bios-cd-e.bin : The BIOS for the European region (Mega-CD). bios-cd-j.bin : The BIOS for the Japanese region (Mega-CD). Usage in Emulation You have two primary ways to get the