{
  "machine": {
    "name": "bigboard5",
    "sourcefile": "xerox/xerox820.cpp",
    "cloneof": "bigboard",
    "romof": "bigboard",
    "isbios": "no",
    "isdevice": "no",
    "ismechanical": "no",
    "runnable": "yes",
    "description": "Big Board (5.25\" drives)",
    "year": "1980",
    "manufacturer": "Digital Research Computers",
    "rom": [
      {
        "name": "bigboard.u67",
        "merge": "bigboard.u67",
        "size": "2048",
        "crc": "5a85a228",
        "sha1": "d51a2cbd0aae80315bda9530275aabfe8305364e",
        "region": "u46",
        "offset": "0",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "bigboard.u73",
        "merge": "bigboard.u73",
        "size": "2048",
        "crc": "10bf0d81",
        "sha1": "7ec73670a4d9d6421a5d6a4c4edc8b7c87923f6c",
        "region": "chargen",
        "offset": "0",
        "status": "good",
        "optional": "no"
      }
    ],
    "device_ref": [
      {
        "tag": ":u46",
        "name": "z80"
      },
      {
        "tag": ":screen",
        "name": "screen"
      },
      {
        "tag": ":gfxdecode",
        "name": "gfxdecode"
      },
      {
        "tag": ":palette",
        "name": "palette"
      },
      {
        "tag": ":u105",
        "name": "z80pio"
      },
      {
        "tag": ":u101",
        "name": "z80pio"
      },
      {
        "tag": ":u99",
        "name": "z80ctc"
      },
      {
        "tag": ":u99:ch0",
        "name": "z80ctc_channel"
      },
      {
        "tag": ":u99:ch1",
        "name": "z80ctc_channel"
      },
      {
        "tag": ":u99:ch2",
        "name": "z80ctc_channel"
      },
      {
        "tag": ":u99:ch3",
        "name": "z80ctc_channel"
      },
      {
        "tag": ":u109",
        "name": "fd1771"
      },
      {
        "tag": ":u109:0",
        "name": "floppy_connector"
      },
      {
        "tag": ":u109:0:sa400l",
        "name": "floppy_525_sssd"
      },
      {
        "tag": ":u109:0:sa400l:flopsndout",
        "name": "speaker"
      },
      {
        "tag": ":u109:0:sa400l:flopsnd",
        "name": "flopsnd"
      },
      {
        "tag": ":u109:1",
        "name": "floppy_connector"
      },
      {
        "tag": ":u109:1:sa400l",
        "name": "floppy_525_sssd"
      },
      {
        "tag": ":u109:1:sa400l:flopsndout",
        "name": "speaker"
      },
      {
        "tag": ":u109:1:sa400l:flopsnd",
        "name": "flopsnd"
      },
      {
        "tag": ":u96",
        "name": "z80sio"
      },
      {
        "tag": ":u96:cha",
        "name": "z80sio_channel"
      },
      {
        "tag": ":u96:chb",
        "name": "z80sio_channel"
      },
      {
        "tag": ":rs232a",
        "name": "rs232"
      },
      {
        "tag": ":rs232b",
        "name": "rs232"
      },
      {
        "tag": ":u76",
        "name": "com8116"
      },
      {
        "tag": ":kb",
        "name": "x820kb"
      },
      {
        "tag": ":kb:i8748",
        "name": "i8048"
      },
      {
        "tag": ":flop_list",
        "name": "software_list"
      },
      {
        "tag": ":quickload",
        "name": "quickload"
      },
      {
        "tag": ":mono",
        "name": "speaker"
      },
      {
        "tag": ":beeper",
        "name": "beep"
      },
      {
        "tag": ":beep_timer",
        "name": "timer"
      }
    ],
    "chip": [
      {
        "type": "cpu",
        "tag": "u46",
        "name": "Zilog Z80",
        "clock": "2500000"
      },
      {
        "type": "cpu",
        "tag": "kb:i8748",
        "name": "Intel 8048",
        "clock": "6000000"
      },
      {
        "type": "audio",
        "tag": "u109:0:sa400l:flopsndout",
        "name": "Speaker"
      },
      {
        "type": "audio",
        "tag": "u109:0:sa400l:flopsnd",
        "name": "Floppy sound",
        "clock": "44100"
      },
      {
        "type": "audio",
        "tag": "u109:1:sa400l:flopsndout",
        "name": "Speaker"
      },
      {
        "type": "audio",
        "tag": "u109:1:sa400l:flopsnd",
        "name": "Floppy sound",
        "clock": "44100"
      },
      {
        "type": "audio",
        "tag": "mono",
        "name": "Speaker"
      },
      {
        "type": "audio",
        "tag": "beeper",
        "name": "Beep",
        "clock": "950"
      }
    ],
    "display": {
      "tag": "screen",
      "type": "raster",
      "rotate": "0",
      "width": "560",
      "height": "240",
      "refresh": "58.759615",
      "pixclock": "10694250",
      "htotal": "700",
      "hbend": "0",
      "hbstart": "560",
      "vtotal": "260",
      "vbend": "0",
      "vbstart": "240",
      "flipx": "no"
    },
    "sound": {
      "channels": "3"
    },
    "input": {
      "players": "1",
      "service": "no",
      "tilt": "no",
      "control": {
        "type": "keyboard",
        "buttons": "74",
        "reverse": "no"
      }
    },
    "port": [
      {
        "tag": ":kb:Y0"
      },
      {
        "tag": ":kb:Y1"
      },
      {
        "tag": ":kb:Y10"
      },
      {
        "tag": ":kb:Y11"
      },
      {
        "tag": ":kb:Y12"
      },
      {
        "tag": ":kb:Y13"
      },
      {
        "tag": ":kb:Y14"
      },
      {
        "tag": ":kb:Y15"
      },
      {
        "tag": ":kb:Y2"
      },
      {
        "tag": ":kb:Y3"
      },
      {
        "tag": ":kb:Y4"
      },
      {
        "tag": ":kb:Y5"
      },
      {
        "tag": ":kb:Y6"
      },
      {
        "tag": ":kb:Y7"
      },
      {
        "tag": ":kb:Y8"
      },
      {
        "tag": ":kb:Y9"
      }
    ],
    "driver": {
      "status": "good",
      "emulation": "good",
      "savestate": "unsupported",
      "requiresartwork": "no",
      "unofficial": "no",
      "nosoundhardware": "no",
      "incomplete": "no"
    },
    "device": [
      {
        "type": "floppydisk",
        "tag": "u109:0:sa400l",
        "interface": "floppy_5_25",
        "instance": {
          "name": "floppydisk1",
          "briefname": "flop1"
        },
        "extension": [
          {
            "name": "mfi"
          },
          {
            "name": "dfi"
          },
          {
            "name": "imd"
          }
        ]
      },
      {
        "type": "floppydisk",
        "tag": "u109:1:sa400l",
        "interface": "floppy_5_25",
        "instance": {
          "name": "floppydisk2",
          "briefname": "flop2"
        },
        "extension": [
          {
            "name": "mfi"
          },
          {
            "name": "dfi"
          },
          {
            "name": "imd"
          }
        ]
      },
      {
        "type": "quickload",
        "tag": "quickload",
        "instance": {
          "name": "quickload",
          "briefname": "quik"
        },
        "extension": [
          {
            "name": "com"
          },
          {
            "name": "cpm"
          }
        ]
      }
    ],
    "slot": [
      {
        "name": "u109:0",
        "slotoption": [
          {
            "name": "sa850",
            "devname": "floppy_8_dsdd",
            "default": "no"
          },
          {
            "name": "sa800",
            "devname": "floppy_8_ssdd",
            "default": "no"
          },
          {
            "name": "sa450",
            "devname": "floppy_525_dd",
            "default": "no"
          },
          {
            "name": "sa400l",
            "devname": "floppy_525_sssd",
            "default": "yes"
          },
          {
            "name": "sa400",
            "devname": "floppy_525_sssd_35t",
            "default": "no"
          }
        ]
      },
      {
        "name": "u109:1",
        "slotoption": [
          {
            "name": "sa850",
            "devname": "floppy_8_dsdd",
            "default": "no"
          },
          {
            "name": "sa800",
            "devname": "floppy_8_ssdd",
            "default": "no"
          },
          {
            "name": "sa450",
            "devname": "floppy_525_dd",
            "default": "no"
          },
          {
            "name": "sa400l",
            "devname": "floppy_525_sssd",
            "default": "yes"
          },
          {
            "name": "sa400",
            "devname": "floppy_525_sssd_35t",
            "default": "no"
          }
        ]
      },
      {
        "name": "rs232a",
        "slotoption": [
          {
            "name": "terminal",
            "devname": "serial_terminal",
            "default": "no"
          },
          {
            "name": "swtpc8212",
            "devname": "swtpc8212_terminal",
            "default": "no"
          },
          {
            "name": "sunkbd",
            "devname": "sunkbd_adaptor",
            "default": "no"
          },
          {
            "name": "rs_printer",
            "devname": "rs_serial_printer",
            "default": "no"
          },
          {
            "name": "rs232_sync_io",
            "devname": "rs232_sync_io",
            "default": "no"
          },
          {
            "name": "printer",
            "devname": "serial_printer",
            "default": "no"
          },
          {
            "name": "patch",
            "devname": "rs232_patch_box",
            "default": "no"
          },
          {
            "name": "s97801",
            "devname": "s97801_terminal",
            "default": "no"
          },
          {
            "name": "msystems_mouse",
            "devname": "rs232_mouse_hle_msystems",
            "default": "no"
          },
          {
            "name": "scorpion",
            "devname": "scorpion_ic",
            "default": "no"
          },
          {
            "name": "nss_tvi",
            "devname": "nss_tvinterface",
            "default": "no"
          },
          {
            "name": "mockingboard",
            "devname": "mockingboardd",
            "default": "no"
          },
          {
            "name": "loopback",
            "devname": "rs232_loopback",
            "default": "no"
          },
          {
            "name": "keyboard",
            "devname": "serial_keyboard",
            "default": "no"
          },
          {
            "name": "ie15",
            "devname": "ie15_terminal",
            "default": "no"
          },
          {
            "name": "null_modem",
            "devname": "null_modem",
            "default": "no"
          },
          {
            "name": "votraxtnt",
            "devname": "serial_votraxtnt",
            "default": "no"
          },
          {
            "name": "h19",
            "devname": "serial_heath_h19",
            "default": "no"
          },
          {
            "name": "dec_loopback",
            "devname": "dec_rs232_loopback",
            "default": "no"
          },
          {
            "name": "pty",
            "devname": "pseudo_terminal",
            "default": "no"
          },
          {
            "name": "auto3a",
            "devname": "auto3a_terminal",
            "default": "no"
          }
        ]
      },
      {
        "name": "rs232b",
        "slotoption": [
          {
            "name": "terminal",
            "devname": "serial_terminal",
            "default": "no"
          },
          {
            "name": "swtpc8212",
            "devname": "swtpc8212_terminal",
            "default": "no"
          },
          {
            "name": "sunkbd",
            "devname": "sunkbd_adaptor",
            "default": "no"
          },
          {
            "name": "rs_printer",
            "devname": "rs_serial_printer",
            "default": "no"
          },
          {
            "name": "rs232_sync_io",
            "devname": "rs232_sync_io",
            "default": "no"
          },
          {
            "name": "printer",
            "devname": "serial_printer",
            "default": "no"
          },
          {
            "name": "patch",
            "devname": "rs232_patch_box",
            "default": "no"
          },
          {
            "name": "s97801",
            "devname": "s97801_terminal",
            "default": "no"
          },
          {
            "name": "msystems_mouse",
            "devname": "rs232_mouse_hle_msystems",
            "default": "no"
          },
          {
            "name": "scorpion",
            "devname": "scorpion_ic",
            "default": "no"
          },
          {
            "name": "nss_tvi",
            "devname": "nss_tvinterface",
            "default": "no"
          },
          {
            "name": "mockingboard",
            "devname": "mockingboardd",
            "default": "no"
          },
          {
            "name": "loopback",
            "devname": "rs232_loopback",
            "default": "no"
          },
          {
            "name": "keyboard",
            "devname": "serial_keyboard",
            "default": "no"
          },
          {
            "name": "ie15",
            "devname": "ie15_terminal",
            "default": "no"
          },
          {
            "name": "null_modem",
            "devname": "null_modem",
            "default": "no"
          },
          {
            "name": "votraxtnt",
            "devname": "serial_votraxtnt",
            "default": "no"
          },
          {
            "name": "h19",
            "devname": "serial_heath_h19",
            "default": "no"
          },
          {
            "name": "dec_loopback",
            "devname": "dec_rs232_loopback",
            "default": "no"
          },
          {
            "name": "pty",
            "devname": "pseudo_terminal",
            "default": "no"
          },
          {
            "name": "auto3a",
            "devname": "auto3a_terminal",
            "default": "no"
          }
        ]
      }
    ],
    "softwarelist": {
      "tag": "flop_list",
      "name": "xerox820",
      "status": "original"
    }
  }
}