{
  "count": 1,
  "generated_at": "2026-10-20T02:57:31Z",
  "items": [
    {
      "id": "mednafen_stv",
      "profile": {
        "core_classification": "community_fork",
        "core_version": "v1.2.1",
        "cores": [
          "mednafen_stv"
        ],
        "display_name": "Sega - ST-V (Mednafen STV)",
        "emulator": "Mednafen STV",
        "files": [
          {
            "description": "ST-V BIOS (Japan)",
            "name": "epr-20091.ic8",
            "region": [
              "japan"
            ],
            "required": true,
            "size": 524288,
            "source_ref": "libretro/libretro.cpp:636, mednafen/ss/ss.cpp:1438-1439, 1462-1468",
            "system": "sega-stv",
            "validation": [
              "size"
            ]
          },
          {
            "description": "ST-V BIOS (Asia/Taiwan)",
            "name": "epr-19854.ic8",
            "region": [
              "asia-ntsc"
            ],
            "required": true,
            "size": 524288,
            "source_ref": "libretro/libretro.cpp:637, mednafen/ss/ss.cpp:1440-1441, 1462-1468",
            "system": "sega-stv",
            "validation": [
              "size"
            ]
          },
          {
            "description": "ST-V BIOS (North America)",
            "name": "epr-17952a.ic8",
            "note": "Used for every SMPC area other than Japan, Asia NTSC and Europe PAL.",
            "region": [
              "north-america",
              "latin-america",
              "brazil",
              "south-korea",
              "asia-pal"
            ],
            "required": true,
            "size": 524288,
            "source_ref": "libretro/libretro.cpp:638, mednafen/ss/ss.cpp:1444-1445, 1462-1468",
            "system": "sega-stv",
            "validation": [
              "size"
            ]
          },
          {
            "description": "ST-V BIOS (Europe)",
            "name": "epr-17954a.ic8",
            "region": [
              "europe"
            ],
            "required": true,
            "size": 524288,
            "source_ref": "libretro/libretro.cpp:639, mednafen/ss/ss.cpp:1442-1443, 1462-1468",
            "system": "sega-stv",
            "validation": [
              "size"
            ]
          },
          {
            "category": "bios_zip",
            "contents": [
              {
                "name": "epr-20091.ic8"
              },
              {
                "name": "epr-19854.ic8"
              },
              {
                "name": "epr-17952a.ic8"
              },
              {
                "name": "epr-17954a.ic8"
              }
            ],
            "description": "ST-V BIOS archive",
            "name": "stvbios.zip",
            "note": "Read only when the loose BIOS file is missing or not 524288 bytes. The member is found by the BIOS file name, and its size is not checked.",
            "required": false,
            "source_ref": "mednafen/ss/ss.cpp:1472-1491",
            "system": "sega-stv"
          },
          {
            "description": "Saturn BIOS (Japan)",
            "name": "sega_101.bin",
            "region": [
              "japan",
              "asia-ntsc"
            ],
            "required": true,
            "sha256": "dcfef4b99605f872b6c3b6d05c045385cdea3d1b702906a0ed930df7bcb7deac",
            "size": 524288,
            "source_ref": "libretro/libretro.cpp:640, mednafen/ss/ss.cpp:1449-1450, 1507, 1520-1521",
            "system": "sega-saturn",
            "validation": [
              "size",
              "sha256"
            ]
          },
          {
            "description": "Saturn BIOS (North America/Europe)",
            "name": "mpr-17933.bin",
            "region": [
              "north-america",
              "latin-america",
              "brazil",
              "south-korea",
              "asia-pal",
              "europe",
              "oceania"
            ],
            "required": true,
            "sha256": "96e106f740ab448cf89f0dd49dfbac7fe5391cb6bd6e14ad5e3061c13330266f",
            "size": 524288,
            "source_ref": "libretro/libretro.cpp:641, mednafen/ss/ss.cpp:1451-1452, 1509, 1520-1521",
            "system": "sega-saturn",
            "validation": [
              "size",
              "sha256"
            ]
          },
          {
            "description": "The King of Fighters '95 ROM cartridge",
            "name": "mpr-18811-mx.ic1",
            "note": "Opened only for the game that needs the cart, and that game does not start without it.",
            "required": false,
            "source_ref": "mednafen/ss/ss.cpp:1348, 1404-1412, 2542",
            "system": "sega-saturn"
          },
          {
            "description": "Ultraman ROM cartridge",
            "name": "mpr-19367-mx.ic1",
            "note": "Opened only for the game that needs the cart, and that game does not start without it.",
            "required": false,
            "source_ref": "mednafen/ss/ss.cpp:1349, 1404-1412, 2543",
            "system": "sega-saturn"
          },
          {
            "description": "Action Replay 4M Plus firmware",
            "name": "satar4mp.bin",
            "note": "Opened only when the Action Replay 4M Plus cart type is selected.",
            "required": false,
            "source_ref": "mednafen/ss/ss.cpp:1350, 1404-1412, 2544",
            "system": "sega-saturn"
          }
        ],
        "notes": "Libretro core by beudbeud built on the Saturn/ST-V module of Mednafen\n1.32.1, with an Asia ST-V BIOS setting and a stvbios.zip fallback added\nto ss.cpp. Recalbox runs it for ST-V, and the loader also accepts Saturn\ndisc images (cue, toc, ccd, chd, m3u).\n\nretro_init() points filesys.path_firmware at the frontend system\ndirectory and names the BIOS of every region\n(ref: libretro/libretro.cpp:615-641). The ST-V BIOS is picked by SMPC\narea: Japan, Asia NTSC, Europe PAL, and North America for every other\narea (ref: mednafen/ss/ss.cpp:1436-1446, mednafen/ss/smpc.h:32-40).\nA Saturn disc takes sega_101.bin for Japan and Asia NTSC and\nmpr-17933.bin otherwise (ref: mednafen/ss/ss.cpp:1447-1453).\n\nThe loose file is tried first and must be exactly 524288 bytes. When it\nis missing or the wrong size, the same name is looked up at the root of\nstvbios.zip in the system directory, then without the leading slash\n(ref: mednafen/ss/ss.cpp:1455-1491). With ss.bios_sanity on, the\ndefault, a file named like one of the five Saturn BIOS images must\nmatch its SHA-256. The ST-V images are not in that table and only the\nsize check applies (ref: mednafen/ss/ss.cpp:1493-1540, 2549).\n\nSaturn games that need the KoF 95 or Ultraman ROM cartridge, and the\nAction Replay 4M Plus cart type, open their ROM from the firmware\ndirectory under the default names below\n(ref: mednafen/ss/ss.cpp:1348-1350, 1404-1412, 2542-2544).\n",
        "profiled_date": "2026-10-17",
        "source": "https://github.com/beudbeud/libretro-stv",
        "source_commit": "2e42ef0c5d8238c170bcf182e68951c214fc6867",
        "systems": [
          "sega-stv",
          "sega-saturn"
        ],
        "type": "libretro",
        "upstream": "https://mednafen.github.io/"
      }
    }
  ],
  "kind": "emulators",
  "schema_version": 1
}