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RetroBIOS

Beetle PC-FX (Mednafen)

Beetle PC-FX (Mednafen) emulates NEC PC-FX. It reads 1 file, 1 of them required: without a required file it does not start games.

About this profile
Detail Value
Type libretro
Classification Community fork
Source https://github.com/libretro/beetle-pcfx-libretro
Upstream https://mednafen.github.io/
Version v0.9.36.5, stated in libretro.cpp
Revision libretro/beetle-pcfx-libretro@c1650bad5fbd
Profiled 2026-03-24
Profile YAML, JSON
Cores mednafen_pcfx, pcfx, beetle-pcfx
Systems NEC PC-FX
Install this emulator's files

The installer finds your setup and its BIOS folder, then downloads only the files this emulator reads there and checks each one.

Open the Start menu. Type PowerShell and open it. Paste the line. Press Enter.

PowerShell
&([scriptblock]::Create((irm https://abdess.github.io/retrobios/i.ps1))) --emulator beetle_pcfx
Technical notes

Libretro port of Mednafen's PC-FX module. Setting "pcfx.bios" resolves to "pcfx.rom" (mednafen/settings.c:92). LoadCommon() loads the file, validates size (1048576 bytes), and maps it at 0xFFF00000. Core won't start without it. No hash validation. Upstream Mednafen also supports an FX-SCSI ROM (pcfx.fxscsi setting, developer-only) not present in this port.

Files

Section titled “Files”

1 file: 1 required, 0 optional.

In this collection: 1 in repo and 0 missing.

Required

Section titled “Required”

pcfx.rom required in repo

PC-FX BIOS v1.00

Hashes, validation and source

Next steps

Section titled “Next steps”
.

Maintained by Abdess on GitHub. Report a problem.

Packs from release v2026.10.10, .

MIT for the tooling and metadata. BIOS and firmware files are third-party system software, preserved for personal backup, archival and interoperability.