Mednafen emulator essential use note

Set up BIOS

For a few game system (e.g. PC Engine/Turbo Grafx, Sega Saturn and PlayStation 1), one needs to provide appropriate BIOS files.

First, locate the firmware/ folder.
  • If you use the zipped windows distribution, the folder is right under the folder where you extract the zip file.
  • If you use Ubuntu, the folder is under $HOME/.mednafen.

Sega Saturn 

Put the appropriate BIOS files into the firmware/ folder.
  • sega_101.bin -- for Japan-region games
  • mpr-17933.bin -- for North America/Europe-region games

PlayStation 1

Put the appropriate BIOS files into the firmware/ folder.
  • scph5500.bin - (NTSC-J) Required for Japan-region games.
  • scph5501.bin - (NTSC-U) Required for North America/US-region games.
  • scph5502.bin - (PAL) Required for Europe-region games. 
To change the name of the BIOS files, edit the following highlighted field in mednafen-*.cfg accordingly.
  • ;Path to the Europe SCPH-5502/v3.0E ROM BIOS
    psx.bios_eu scph5502.bin
  • ;Path to the Japan SCPH-5500/v3.0J ROM BIOS
    psx.bios_jp fireware\SCPH5003.BIN
  • ;Path to the North America SCPH-5501/v3.0A ROM BIOS
    psx.bios_na scph5501.bin
To skip the BIOS sanity test (say if you are using some other BIOS), change the value of the following attribute to 0 in mednafen-*.cfg.

  • ;Enable BIOS ROM image sanity checks.
    psx.bios_sanity 0

Start a game

To start the emulation, simply drag the .cue (CD-based games) and .bin files (ROM-based games) to mednafen.exe, or run the following:
mednafen.exe /path/to/.cue/or/.bin/file

Set joypad button

Press alt+shift+1 after you load a game, then you will be presented with prompts to set up your controller.

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