emulator: MAME MESS
type: libretro
core_classification: official_port
source: "https://github.com/libretro/mame"
upstream: "https://github.com/mamedev/mame"
profiled_date: "2026-03-24"
core_version: "0.286"
display_name: "Multi (MAME/MESS)"

cores:
  - mamemess
systems:
  - coleco-adam
  - entex-advision

notes: |
  SUBTARGET=mess build from libretro/mame. Same source, same CORE_NAME ("mame"),
  same paths (system_dir/mame/) as the mame core. Excludes arcade drivers, includes
  only console/computer/non-arcade drivers (~1290 driver files via mess.flt).
  romload.cpp unmodified. No hiscore support.

  Paths under system_dir/mame/ (artwork, cheat, hash, ini, plugins, samples,
  crosshair). ROM search: content_dir + system_dir/mame/bios + system_dir/mame/roms.
  Hash directory contains software list XMLs needed for MESS software loading.

  mess.flt exceptions: adds AES (+aes), CD-i consoles (+cdimono1, +cdimono2,
  +cdi910, +cdi490a), Atari Jaguar (+jaguar, +jaguarcd), CPS Changer
  (+wofch, +sfzch, +sfach, +sfzbch). Removes arcade 3DO machines (-3dobios,
  -alg3do, -orbatak, -md23do, -sht3do).

  1 active IS_BIOS_ROOT (miuchiz). XaviX TV game parent machines serve as
  console BIOS for cartridge-based software (IS_BIOS_ROOT commented out in
  source but functionally required). Coleco Adam and Entex Adventure Vision
  system ROMs required for software loading (not IS_BIOS_ROOT but
  functionally BIOS). Adam uses ADAMnet bus with per-device MCU ROMs.

files:
  # Miuchiz Virtual Companions
  - name: miuchiz.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/misc/miuchiz.cpp:227"

  # XaviX TV games — e-kara family
  - name: ekara.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2878"

  - name: ekaraa.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2879"

  - name: ekaraj.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2880"

  - name: ekarag.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2881"

  - name: ekaras.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2882"

  - name: isinger.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2884"

  - name: ekaraphs.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2887"

  - name: epitch.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2890"

  - name: ekaramix.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2893"

  # XaviX TV games — DDR / Popira / misc
  - name: ddrfammt.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2896"

  - name: popira.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2899"

  - name: popirak.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2901"

  - name: popira2.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2904"

  - name: taikodp.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2907"

  - name: jpopira.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2910"

  - name: evio.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2913"

  - name: tak_daig.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2918"

  - name: gcslottv.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2920"

  - name: hikara.zip
    required: true
    category: bios_zip
    source_ref: "src/mame/tvgames/xavix.cpp:2925"

  # Coleco Adam
  - name: adam.zip
    required: true
    category: bios_zip
    system: coleco-adam
    source_ref: "src/mame/coleco/adam.cpp:1114-1128"
    contents:
      - name: os7.u2
        description: "OS7 operating system ROM"
        size: 8192
        crc32: 3aa93ef3
      - name: "alf @1 rev 57 e3d5.u8"
        description: "SmartWriter ROM bank 1"
        size: 8192
        crc32: 565b364a
      - name: "alf @2 rev 57 ae6a.u20"
        description: "SmartWriter ROM bank 2"
        size: 8192
        crc32: 44a1cff4
      - name: "alf @3 rev 57 8534.u21"
        description: "SmartWriter ROM bank 3"
        size: 8192
        crc32: 77657b90
      - name: "eos 6 rev 57 08dd.u22"
        description: "EOS (Elementary Operating System)"
        size: 8192
        crc32: ef6403c5
      - name: wp_r80.rom
        description: "SmartWriter word processor"
        size: 32768
        crc32: 58d86a2a
      - name: "master rev a 174b.u6"
        description: "Master 6801 ADAMnet controller"
        size: 2048
        crc32: 035a7a3d

  - name: adam_kb.zip
    required: true
    category: bios_zip
    system: coleco-adam
    source_ref: "src/devices/bus/adamnet/kb.cpp:33-36"
    contents:
      - name: keyboard.u2
        description: "Keyboard 6801 MCU ROM"
        size: 2048
        crc32: ef204746

  - name: adam_prn.zip
    required: true
    category: bios_zip
    system: coleco-adam
    source_ref: "src/devices/bus/adamnet/printer.cpp:33-36"
    contents:
      - name: printer.u2
        description: "Printer 6801 MCU ROM"
        size: 2048
        crc32: e8db783b

  - name: adam_ddp.zip
    required: true
    category: bios_zip
    system: coleco-adam
    source_ref: "src/devices/bus/adamnet/ddp.cpp:35-38"
    contents:
      - name: "tape rev a 8865.u24"
        description: "Digital Data Pack 6801 MCU ROM"
        size: 2048
        crc32: 6b9ea1cf

  - name: adam_fdc.zip
    required: true
    category: bios_zip
    system: coleco-adam
    source_ref: "src/devices/bus/adamnet/fdc.cpp:65-69"
    contents:
      - name: "adam disk u10 ad 31 rev a 09-27-84.u10"
        description: "FDC 160KB SSDD 6801 MCU ROM"
        size: 4096
        crc32: 4b0b7143

  - name: adam_fdc_320kb.zip
    required: false
    category: bios_zip
    system: coleco-adam
    source_ref: "src/devices/bus/adamnet/fdc.cpp:76-85"

  - name: adam_fdc_a720dipi.zip
    required: false
    category: bios_zip
    system: coleco-adam
    source_ref: "src/devices/bus/adamnet/fdc.cpp:92-96"

  - name: adam_fdc_fp720at.zip
    required: false
    category: bios_zip
    system: coleco-adam
    source_ref: "src/devices/bus/adamnet/fdc.cpp:103-107"

  - name: adam_fdc_mihddd.zip
    required: false
    category: bios_zip
    system: coleco-adam
    source_ref: "src/devices/bus/adamnet/fdc.cpp:114-117"

  - name: adam_spi.zip
    required: false
    category: bios_zip
    system: coleco-adam
    source_ref: "src/devices/bus/adamnet/spi.cpp:25-28"

  # Entex Adventure Vision
  - name: advision.zip
    required: true
    category: bios_zip
    system: entex-advision
    source_ref: "src/mame/entex/advision.cpp:357"
    contents:
      - name: ins8048-11kdp_n.u5
        description: "Intel 8048 main CPU ROM"
        size: 1024
        crc32: 279e33d1
      - name: cop411l-kcn_n.u8
        description: "National COP411L sound CPU ROM"
        size: 512
        crc32: 81e95975