{
  "machine": {
    "name": "c1581",
    "sourcefile": "devices/bus/cbmiec/c1581.cpp",
    "isdevice": "yes",
    "runnable": "no",
    "isbios": "no",
    "ismechanical": "no",
    "description": "Commodore 1581 3.5\" Disk Drive",
    "biosset": [
      {
        "name": "beta",
        "description": "Beta",
        "default": "no"
      },
      {
        "name": "r1",
        "description": "Revision 1",
        "default": "yes"
      },
      {
        "name": "r2",
        "description": "Revision 2",
        "default": "no"
      },
      {
        "name": "jiffydos",
        "description": "JiffyDOS v6.01",
        "default": "no"
      }
    ],
    "rom": [
      {
        "name": "beta.u2",
        "bios": "beta",
        "size": "32768",
        "crc": "ecc223cd",
        "sha1": "a331d0d46ead1f0275b4ca594f87c6694d9d9594",
        "region": "u1",
        "offset": "0",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "318045-01.u2",
        "bios": "r1",
        "size": "32768",
        "crc": "113af078",
        "sha1": "3fc088349ab83e8f5948b7670c866a3c954e6164",
        "region": "u1",
        "offset": "0",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "318045-02.u2",
        "bios": "r2",
        "size": "32768",
        "crc": "a9011b84",
        "sha1": "01228eae6f066bd9b7b2b6a7fa3f667e41dad393",
        "region": "u1",
        "offset": "0",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "jiffydos 1581.u2",
        "bios": "jiffydos",
        "size": "32768",
        "crc": "98873d0f",
        "sha1": "65bbf2be7bcd5bdcbff609d6c66471ffb9d04bfe",
        "region": "u1",
        "offset": "0",
        "status": "good",
        "optional": "no"
      }
    ],
    "device_ref": [
      {
        "tag": ":_tmp:u1",
        "name": "m6502"
      },
      {
        "tag": ":_tmp:u5",
        "name": "mos8520"
      },
      {
        "tag": ":_tmp:u4",
        "name": "wd1772"
      },
      {
        "tag": ":_tmp:u4:0",
        "name": "floppy_connector"
      }
    ],
    "chip": [
      {
        "type": "cpu",
        "tag": ":u1",
        "name": "MOS Technology 6502",
        "clock": "2000000"
      },
      {
        "type": "cpu",
        "tag": ":u5",
        "name": "MOS 8520 CIA",
        "clock": "2000000"
      }
    ],
    "dipswitch": {
      "name": "Device Address",
      "tag": ":ADDRESS",
      "mask": "3",
      "dipvalue": [
        {
          "name": "8",
          "value": "0",
          "default": "yes"
        },
        {
          "name": "9",
          "value": "1",
          "default": "no"
        },
        {
          "name": "10",
          "value": "2",
          "default": "no"
        },
        {
          "name": "11",
          "value": "3",
          "default": "no"
        }
      ]
    }
  }
}