The BIOS file sega_101.bin (often referred to as sega101.bin) is the version 1.01 system firmware for the Sega Saturn Go to product viewer dialog for this item.
Because these files are tiny (usually exactly 512KB), a single bit of corrupted data can cause an emulator to crash, display "black screens," or suffer from game-breaking glitches. A "verified" sega101.bin means the file has been checked against a known good dump from a physical Sega Saturn console.
If you intend to play Japanese imports, you will also need the Japanese BIOS file. Console Region: Japan File Name: mpr-17933.bin (sometimes named sega_100.bin) Verified MD5 Hash: 3240ed30eb79ce65ad54024f803bc2ff 📁 Where to Put the BIOS Files
If you are using the popular front-end RetroArch, placing the file in the correct directory is mandatory: Open your main RetroArch folder. Locate the system folder.