If you play Crash Team Racing or Bomberman Fantasy Race with 4 players, the BIOS manages the Multitap interface. Ensure you have SCPH-5501 or newer (SCPH-7001 has better multitap support).
ePSXe 2.0.5 is compatible with most PlayStation BIOS dumps, but some work better than others. The emulator expects a specific file size, MD5 checksum, and region signature. Epsxe 2.0.5 Bios
Inside your ePSXe installation directory (e.g., C:\Program Files\ePSXe\ ), create a folder named bios . If you play Crash Team Racing or Bomberman