{
  "commit": "d38cd580364b2c788e633b9e51c15e1668f726c0",
  "count": 1,
  "generated_at": "2026-11-03T13:36:34Z",
  "items": [
    {
      "id": "vecx",
      "profile": {
        "core_classification": "community_fork",
        "core_version": "1.2",
        "cores": [
          "vecx"
        ],
        "display_name": "GCE - Vectrex (vecx)",
        "emulator": "vecx",
        "files": [],
        "notes": "vecx is a GCE Vectrex emulator ported to libretro.\n\nThe Vectrex system ROM (8192 bytes) is fully embedded in the binary.\nThere are three compile-time BIOS variants in bios/:\n  - system.h (STANDARD_BIOS, default) - original Vectrex ROM\n  - fast.h   (FAST_BIOS) - modified BIOS with faster boot\n  - skip.h   - modified BIOS that skips the intro\n\nThe default build uses STANDARD_BIOS via #define at libretro.c:20.\nAt load time (retro_load_game, libretro.c:737):\n  memcpy(rom, bios_data, bios_data_size);\nThis copies the compiled-in BIOS data into the rom[8192] array\n(vecx.c:40, mapped at 0xE000-0xFFFF via vecx.c:437-439).\n\nThe core never calls RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY and has\nno code path to load an external BIOS file from disk. No .info file\nis shipped with the repo declaring firmware requirements.\n\nrom.dat in the repo root is identical to bios/system.bin (same MD5:\nab082fa8c8e632dd68589a8c7741388f), likely kept for standalone builds.\n",
        "platform_details": {
          "bios_mapping": {
            "note": "CPU reads from 0xE000-0xFFFF are served from rom[] via\naddress & 0x1FFF masking. The array is populated from the\ncompiled-in bios_data at retro_load_game() time.\n",
            "source_ref": "source vecx.c:40 (unsigned char rom[8192]), source vecx.c:437-439 (read handler)",
            "target": "0xE000-0xFFFF in Vectrex address space (8 KB)"
          },
          "embedded_bios": {
            "fast_bios": {
              "md5": "a970aed37cffd29ab3740f8e79518858",
              "sha1": "e0900be6d6858b985fd7f0999d864b2fceaf01a1",
              "size": 8192
            },
            "note": "All three variants are 8192 bytes, compiled as C arrays in\nbios/*.h headers. STANDARD_BIOS is the authentic Vectrex ROM.\nFAST_BIOS and skip are modified versions for faster startup.\nSelection is compile-time only (#ifdef chain, libretro.c:20-30).\n",
            "skip_bios": {
              "md5": "05f32c2b18b6fb168ab976989e86dfb1",
              "sha1": "6c891bd74acb201d54071b310bd6df6617cdf205",
              "size": 8192
            },
            "source_ref": "source libretro.c:20-30, source bios/system.h",
            "standard_bios": {
              "md5": "ab082fa8c8e632dd68589a8c7741388f",
              "sha1": "65d07426b520ddd3115d40f255511e0fd2e20ae7",
              "size": 8192
            }
          }
        },
        "profiled_date": "2026-03-25",
        "source": "https://github.com/libretro/libretro-vecx",
        "source_commit": "dccff5402a16d1ea7c112095a8e42632bf149506",
        "systems": [
          "gce-vectrex"
        ],
        "type": "libretro",
        "upstream": "https://github.com/jhawthorn/vecx",
        "version_basis": {
          "kind": "file",
          "path": "libretro.c",
          "pattern": "info->library_version\\s*=\\s*\"([^\"]+)\""
        }
      }
    }
  ],
  "kind": "emulators",
  "schema_version": 1
}