{
  "machine": {
    "name": "grandmas",
    "sourcefile": "miltonbradley/grandmaster.cpp",
    "ismechanical": "yes",
    "isbios": "no",
    "isdevice": "no",
    "runnable": "yes",
    "description": "Grand Master (Milton Bradley)",
    "year": "1983",
    "manufacturer": "Milton Bradley",
    "rom": [
      {
        "name": "c19660_7834243004_reva.u3",
        "size": "8192",
        "crc": "c7a91b34",
        "sha1": "43f9caf8a13ae1a3274851fbcc411bc50c21fe1d",
        "region": "maincpu",
        "offset": "0",
        "status": "good",
        "optional": "no"
      },
      {
        "name": "c19661_7834243003_reva.u2",
        "size": "8192",
        "crc": "b47dda81",
        "sha1": "02c946fa47db1c7edfb59e11ad3c802b92f4d3a1",
        "region": "maincpu",
        "offset": "2000",
        "status": "good",
        "optional": "no"
      }
    ],
    "device_ref": [
      {
        "tag": ":maincpu",
        "name": "m6502"
      },
      {
        "tag": ":mainirq",
        "name": "ipt_merge_any_hi"
      },
      {
        "tag": ":irq_ff0",
        "name": "7474"
      },
      {
        "tag": ":irq_ff1",
        "name": "7474"
      },
      {
        "tag": ":irq_ff2",
        "name": "7474"
      },
      {
        "tag": ":irq_clock",
        "name": "clock"
      },
      {
        "tag": ":board",
        "name": "mb_gmboard"
      },
      {
        "tag": ":board:board",
        "name": "sensorboard"
      },
      {
        "tag": ":display",
        "name": "pwm_display"
      },
      {
        "tag": ":speaker",
        "name": "speaker"
      },
      {
        "tag": ":dac",
        "name": "dac"
      }
    ],
    "chip": [
      {
        "type": "cpu",
        "tag": "maincpu",
        "name": "MOS Technology 6502",
        "clock": "1790000"
      },
      {
        "type": "audio",
        "tag": "speaker",
        "name": "Speaker"
      },
      {
        "type": "audio",
        "tag": "dac",
        "name": "1-Bit DAC"
      }
    ],
    "sound": {
      "channels": "1"
    },
    "input": {
      "players": "1",
      "service": "no",
      "tilt": "no",
      "control": {
        "type": "keypad",
        "buttons": "9",
        "reverse": "no"
      }
    },
    "configuration": [
      {
        "name": "Remember Position",
        "tag": "board:board:CONF",
        "mask": "3",
        "condition": {
          "tag": "UI_CHECK",
          "mask": "4",
          "relation": "ne",
          "value": "0"
        },
        "confsetting": [
          {
            "name": "No",
            "value": "1",
            "default": "no"
          },
          {
            "name": "Yes",
            "value": "2",
            "default": "no"
          },
          {
            "name": "Auto",
            "value": "0",
            "default": "yes"
          }
        ]
      },
      {
        "name": "Show Pieces",
        "tag": "board:board:CONF",
        "mask": "4",
        "condition": {
          "tag": "UI_CHECK",
          "mask": "4",
          "relation": "ne",
          "value": "0"
        },
        "confsetting": [
          {
            "name": "No",
            "value": "4",
            "default": "no"
          },
          {
            "name": "Yes",
            "value": "0",
            "default": "yes"
          }
        ]
      }
    ],
    "port": [
      {
        "tag": ":IN.0"
      },
      {
        "tag": ":board:board:BS_CHECK"
      },
      {
        "tag": ":board:board:CONF"
      },
      {
        "tag": ":board:board:RANK.1"
      },
      {
        "tag": ":board:board:RANK.10"
      },
      {
        "tag": ":board:board:RANK.11"
      },
      {
        "tag": ":board:board:RANK.12"
      },
      {
        "tag": ":board:board:RANK.13"
      },
      {
        "tag": ":board:board:RANK.2"
      },
      {
        "tag": ":board:board:RANK.3"
      },
      {
        "tag": ":board:board:RANK.4"
      },
      {
        "tag": ":board:board:RANK.5"
      },
      {
        "tag": ":board:board:RANK.6"
      },
      {
        "tag": ":board:board:RANK.7"
      },
      {
        "tag": ":board:board:RANK.8"
      },
      {
        "tag": ":board:board:RANK.9"
      },
      {
        "tag": ":board:board:SPAWN"
      },
      {
        "tag": ":board:board:SS_CHECK"
      },
      {
        "tag": ":board:board:UI"
      },
      {
        "tag": ":board:board:UI_CHECK"
      }
    ],
    "driver": {
      "status": "preliminary",
      "emulation": "good",
      "savestate": "supported",
      "requiresartwork": "no",
      "unofficial": "no",
      "nosoundhardware": "no",
      "incomplete": "no"
    },
    "feature": {
      "type": "controls",
      "status": "imperfect"
    }
  }
}