{
  "commit": "fbe5ba4e3e790ab07eddc5b57e0f45a02cbcd60e",
  "count": 1,
  "generated_at": "2026-10-24T00:06:47Z",
  "items": [
    {
      "id": "rpix86",
      "profile": {
        "core_classification": "other",
        "core_version": "0.19",
        "cores": [
          "rpix86"
        ],
        "display_name": "DOS (rpix86)",
        "emulator": "rpix86",
        "files": [
          {
            "crc32": "8300d4cb",
            "description": "4DOS 7.50 command interpreter, the emulated DOS shell",
            "installed_on": [
              "retropie"
            ],
            "md5": "fc3a0078a13d98e611a62c1d6724f8c5",
            "name": "4DOS.COM",
            "note": "Same bytes at rpix86.patrickaalto.com/4DOS.COM, the URL the binary downloads from, and in RetroPie's 4dos.zip. Read from the emulated C: root, not a BIOS directory. The author's rpix86.zip and rpix86.tar.gz hold the binary alone, and RetroPie unpacks 4dos.zip into the install directory.",
            "path": "4DOS.COM",
            "required": true,
            "sha1": "a44f65d6318582501d22e27831eb2b1f0df58f79",
            "size": 257520,
            "source_ref": "rpix86 0.19 binary, strings C:\\4DOS.COM and C:\\4DOS\\4DOS.COM",
            "system": "dos"
          }
        ],
        "notes": "Patrick Aalto's x86 DOS emulator for the Raspberry Pi, freeware and closed\nsource. Profiled from the binary RetroPie installs,\nfiles.retropie.org.uk/archives/rpix86.tar.gz (sha256 8591b715f7c5...ad328d),\nan ARM EABI5 executable whose banner reads \"rpix86 (Raspberry Pi x86\nemulator) v 0.19\" with \"BIOS date: Jun 28 2015\". The BIOS, VGA and sound\nemulation are inside the binary. Its strings name no ROM, font or patch\nfile, only the shell below, /boot/config.txt (overscan defaults), the\ninput and serial devices, and the log and screenshot files it writes.\n\nC:\\ is the directory given with -d, the working directory by default\n(usage text). The emulator looks for its shell as C:\\4DOS.COM or\nC:\\4DOS\\4DOS.COM. When neither exists it stops with \"Unable to find\n4DOS.COM command interpreter (shell)\" and offers to fetch it with\n\"wget http://rpix86.patrickaalto.com/4DOS.COM\". RetroPie runs the binary\nfrom its install directory and unpacks\nfiles.retropie.org.uk/archives/4dos.zip (sha256 801441f3f65e...5b636a,\n4DOS 7.50 from JP Software) there (scriptmodules/emulators/rpix86.sh).\n",
        "profiled_date": "2026-10-20",
        "source": "http://rpix86.patrickaalto.com/rdown.html",
        "systems": [
          "dos"
        ],
        "type": "standalone",
        "upstream": null,
        "verification": "existence"
      }
    }
  ],
  "kind": "emulators",
  "schema_version": 1
}