emulator: mednafen_pce
type: libretro
core_classification: community_fork
source: "https://github.com/libretro/beetle-pce-libretro"
upstream: "https://mednafen.github.io/"
profiled_date: "2026-03-24"
core_version: "v0.9.38.7"
display_name: "NEC - PC Engine / SuperGrafx / CD (Beetle PCE)"
cores: [mednafen_pce]
systems: [nec-pc-engine]
verification: existence
notes: >
  Fork of Mednafen's pce module (accurate, with SuperGrafx and CD support).
  Separate codebase from mednafen_pce_fast (mednafen/pce/ vs mednafen/pce_fast/).
  BIOS loaded via PCE_LoadCD() at CD-ROM load time. Core option "pce_cdbios"
  selects which card image to use (default: System Card 3).
  DetectGECD() auto-detects Games Express discs and overrides to gexpress.pce.
  Arcade Card mode (pce_arcadecard option, enabled by default) extends System
  Card 3 with extra RAM mapping.
  No hash or size validation on BIOS load.
  Upstream pce module has configurable pce.cdbios/pce.gecdbios string settings;
  the 6-option dropdown is a libretro addition.

files:
  - name: "syscard3.pce"
    description: "CD-ROM System Card 3.0 (Japan)"
    region: "NTSC-J"
    required: true
    source_ref: "libretro.cpp:1051-1052, settings.cpp:40"
    notes: "Default value for pce_cdbios option."

  - name: "syscard2.pce"
    description: "CD-ROM System Card 2.0 (Japan)"
    region: "NTSC-J"
    required: false
    source_ref: "libretro.cpp:1053-1054"
    notes: "pce_cdbios = 'System Card 2'."

  - name: "syscard1.pce"
    description: "CD-ROM System Card 1.0 (Japan)"
    region: "NTSC-J"
    required: false
    source_ref: "libretro.cpp:1055-1056"
    notes: "pce_cdbios = 'System Card 1'."

  - name: "gexpress.pce"
    description: "Games Express CD Card"
    region: "NTSC-J"
    required: false
    aliases: ["gecard.pce"]
    source_ref: "libretro.cpp:1057-1058, settings.cpp:41, pce.cpp:373-411"
    notes: "pce_cdbios = 'Games Express' or auto-detected via DetectGECD()."

  - name: "syscard3u.pce"
    description: "CD-ROM System Card 3.0 (US / TurboGrafx-CD)"
    region: "NTSC-U"
    required: false
    source_ref: "libretro.cpp:1059-1060"
    notes: "pce_cdbios = 'System Card 3 US'. Not in .info."

  - name: "syscard2u.pce"
    description: "CD-ROM System Card 2.0 (US / TurboGrafx-CD)"
    region: "NTSC-U"
    required: false
    source_ref: "libretro.cpp:1061-1062"
    notes: "pce_cdbios = 'System Card 2 US'. Not in .info."