: The BIOS provides the exact timing and system calls the original hardware used, ensuring the game runs exactly as it did in the 90s. How to use bios41a.bin

The filename must be exact (usually lowercase or uppercase depending on the system) for the emulator to recognize it.

Never flash a BIOS unless necessary. When you do, double-check the filename, the motherboard model, and always—always—keep a verified backup of the working bios41a.bin from your own machine.

– It could be a BIOS dump from:

: Drag and drop the BIOS file directly into the library window. Retro Game BIOS Files - What are they? Where? Which ones?

Double-click.