{
  "machine": {
    "name": "drderby",
    "sourcefile": "snk/drderby.cpp",
    "isbios": "no",
    "isdevice": "no",
    "ismechanical": "no",
    "runnable": "yes",
    "description": "Derby Derby",
    "year": "1981",
    "manufacturer": "SNK",
    "rom": [
      {
        "name": "h1",
        "size": "2048",
        "crc": "2b6fc963",
        "sha1": "bdbf71bd0994231517ecf8188ea19cc7d42e5333",
        "region": "maincpu",
        "offset": "0",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "h2",
        "size": "2048",
        "crc": "b9653e78",
        "sha1": "fd1369c734a0fec8def5b7819b14e4c0d1361896",
        "region": "maincpu",
        "offset": "800",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "h3",
        "size": "2048",
        "crc": "77ce7149",
        "sha1": "e6a38f9eb676f84ec0e4c28e27d0aa959b97301f",
        "region": "maincpu",
        "offset": "1000",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "h4",
        "size": "2048",
        "crc": "7e77d95d",
        "sha1": "0e0b7acd622806b4eee3c691f05a04bd2989dbea",
        "region": "maincpu",
        "offset": "1800",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "h5",
        "size": "2048",
        "crc": "e2c6abdb",
        "sha1": "555f759897904e577a0a38abaaa7636e974192da",
        "region": "maincpu",
        "offset": "2000",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "h6",
        "size": "2048",
        "crc": "8b179039",
        "sha1": "079bec1ead7e04e29e552e3b48bec740a869751d",
        "region": "maincpu",
        "offset": "2800",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "h7",
        "size": "2048",
        "crc": "db21fc82",
        "sha1": "38cf58c4d33da3e919d058abb482566c8f70d276",
        "region": "maincpu",
        "offset": "3000",
        "status": "good",
        "optional": "no"
      }
    ],
    "device_ref": [
      {
        "tag": ":maincpu",
        "name": "i8085a"
      },
      {
        "tag": ":i8155",
        "name": "i8155"
      },
      {
        "tag": ":screen",
        "name": "screen"
      },
      {
        "tag": ":palette",
        "name": "palette"
      },
      {
        "tag": ":mono",
        "name": "speaker"
      },
      {
        "tag": ":speaker",
        "name": "speaker_sound_device"
      }
    ],
    "chip": [
      {
        "type": "cpu",
        "tag": "maincpu",
        "name": "Intel 8085A",
        "clock": "6000000"
      },
      {
        "type": "audio",
        "tag": "mono",
        "name": "Speaker"
      },
      {
        "type": "audio",
        "tag": "speaker",
        "name": "Filtered DAC"
      }
    ],
    "display": {
      "tag": "screen",
      "type": "raster",
      "rotate": "270",
      "width": "256",
      "height": "240",
      "refresh": "60.000000",
      "flipx": "no"
    },
    "sound": {
      "channels": "1"
    },
    "input": {
      "players": "1",
      "coins": "1",
      "tilt": "yes",
      "service": "no",
      "control": [
        {
          "type": "joy",
          "buttons": "1",
          "ways": "2",
          "reverse": "no"
        },
        {
          "type": "gambling",
          "buttons": "1",
          "reverse": "no"
        }
      ]
    },
    "dipswitch": [
      {
        "name": "Coinage",
        "tag": "IN.0",
        "mask": "7",
        "diplocation": [
          {
            "name": "SW",
            "number": "1",
            "inverted": "no"
          },
          {
            "name": "SW",
            "number": "2",
            "inverted": "no"
          },
          {
            "name": "SW",
            "number": "3",
            "inverted": "no"
          }
        ],
        "dipvalue": [
          {
            "name": "1 Coin/1 Credit",
            "value": "1",
            "default": "no"
          },
          {
            "name": "1 Coin/2 Credits",
            "value": "2",
            "default": "no"
          },
          {
            "name": "1 Coin/3 Credits",
            "value": "3",
            "default": "no"
          },
          {
            "name": "1 Coin/4 Credits",
            "value": "4",
            "default": "no"
          },
          {
            "name": "1 Coin/5 Credits",
            "value": "5",
            "default": "no"
          },
          {
            "name": "1 Coin/6 Credits",
            "value": "6",
            "default": "no"
          },
          {
            "name": "1 Coin/7 Credits",
            "value": "7",
            "default": "yes"
          },
          {
            "name": "1 Coin/10 Credits",
            "value": "0",
            "default": "no"
          }
        ]
      },
      {
        "name": "UNK04",
        "tag": "IN.0",
        "mask": "8",
        "diplocation": {
          "name": "SW",
          "number": "4",
          "inverted": "no"
        },
        "dipvalue": [
          {
            "name": "Off",
            "value": "8",
            "default": "yes"
          },
          {
            "name": "On",
            "value": "0",
            "default": "no"
          }
        ]
      },
      {
        "name": "UNK05",
        "tag": "IN.0",
        "mask": "16",
        "diplocation": {
          "name": "SW",
          "number": "5",
          "inverted": "no"
        },
        "dipvalue": [
          {
            "name": "Off",
            "value": "16",
            "default": "yes"
          },
          {
            "name": "On",
            "value": "0",
            "default": "no"
          }
        ]
      },
      {
        "name": "Maximum Bet",
        "tag": "IN.0",
        "mask": "32",
        "diplocation": {
          "name": "SW",
          "number": "6",
          "inverted": "no"
        },
        "dipvalue": [
          {
            "name": "20",
            "value": "32",
            "default": "yes"
          },
          {
            "name": "50",
            "value": "0",
            "default": "no"
          }
        ]
      }
    ],
    "port": [
      {
        "tag": ":IN.0"
      },
      {
        "tag": ":IN.1"
      },
      {
        "tag": ":IN.2"
      },
      {
        "tag": ":IN.3"
      }
    ],
    "driver": {
      "status": "good",
      "emulation": "good",
      "savestate": "supported",
      "requiresartwork": "no",
      "unofficial": "no",
      "nosoundhardware": "no",
      "incomplete": "no"
    }
  }
}