BIOS files are copyrighted. You should dump them from your own consoles. No BIOS pack distributed online is “official” — use at your own discretion.
filesys.firmware_directory /path/to/your/bios Run Mednafen from the command line with -bi or check the log output. Mednafen will complain if a BIOS is missing or has a bad checksum. Mednafen Bios Pack
A correct BIOS pack turns Mednafen from a barely-working emulator into a nearly perfect reproduction of classic hardware. Take 10 minutes to locate the right dumps — your games will thank you. BIOS files are copyrighted
| System | BIOS Filename(s) | Notes | |---------------|--------------------------------|-------------------------------------| | PlayStation | scph5500.bin , scph5501.bin , scph5502.bin | Japan, USA, Europe | | Saturn | sega_101.bin | Also requires mpr-17933.bin for some games | | PC-FX | pcfx.bios | | | Neo Geo CD | neocd.bin | Top loader or CDZ | | WonderSwan | wswan.bin , wswanc.bin | Mono & Color | | SuperGrafx | Use PC Engine BIOS | syscard3.pce | | Virtual Boy | vb.bin | | filesys
Some frontends (like Mednaffe or EmulationStation) let you set BIOS paths per system. Keep all BIOS files in one folder and point each system’s config to it.
Mednafen is a powerful, accurate emulator for systems like PlayStation 1, Sega Saturn, PC-FX, Neo Geo CD, and more. But unlike cartridge-based consoles, many of these systems require BIOS files to run games correctly. That’s where a Mednafen BIOS pack comes in.
Here’s a draft for a blog post about the — useful for anyone setting up this multi-system emulator. Title: The Essential Mednafen BIOS Pack: What You Need & Where It Goes