gottlieb_80b-2.nv.json

{
  "_notes": [
    "Compiled by Tom Collins.",
    "Game uses a 4-bit nvram (256x4), so only uses the low nibble of each byte.",
    "Game stores 61 bytes of data in triplicate at offsets 0x00, 0x3D and 0x7A.",
    "If a value in one location doesn't match the other two, it's replaced by the other value.",
    "If a value differs in all three locations, it's replaced with a default value.",
    "Note that offsets 0xF8 through 0xFC are checksums of each of the high scores.",
    "Appears to work for all System 80B S2/S3 games.",
    "Untested: diamond, excaliba, hotshots, nmoves"
  ],
  "_copyright": "Copyright (C) 2024 by Tom Collins <tom@tomlogic.com>",
  "_license": "GNU Lesser General Public License v3.0",
  "_endian": "big",
  "_roms": [
    "diamond",
    "excaliba",
    "robowars",
    "txsector",
    "victory",
    "badgirls",
    "bighouse",
    "bonebstr",
    "hotshots",
    "nmoves"
  ],
  "_fileformat": 0.2,
  "_version": 0.1,
  "game_state": {
    "credits": {
      "label": "Credits",
      "start": 57,
      "encoding": "bcd",
      "length": 2,
      "nibble": "low"
    }
  },
  "high_scores": [
    {
      "label": "High Score #1",
      "short_label": "1st",
      "initials": {
        "start": 183,
        "encoding": "ch",
        "length": 6,
        "nibble": "low"
      },
      "score": {
        "start": 189,
        "encoding": "bcd",
        "length": 7,
        "nibble": "low",
        "scale": 10
      }
    },
    {
      "label": "High Score #2",
      "short_label": "2nd",
      "initials": {
        "start": 196,
        "encoding": "ch",
        "length": 6,
        "nibble": "low"
      },
      "score": {
        "start": 202,
        "encoding": "bcd",
        "length": 7,
        "nibble": "low",
        "scale": 10
      }
    },
    {
      "label": "High Score #3",
      "short_label": "3rd",
      "initials": {
        "start": 209,
        "encoding": "ch",
        "length": 6,
        "nibble": "low"
      },
      "score": {
        "start": 215,
        "encoding": "bcd",
        "length": 7,
        "nibble": "low",
        "scale": 10
      }
    },
    {
      "label": "High Score #4",
      "short_label": "4th",
      "initials": {
        "start": 222,
        "encoding": "ch",
        "length": 6,
        "nibble": "low"
      },
      "score": {
        "start": 228,
        "encoding": "bcd",
        "length": 7,
        "nibble": "low",
        "scale": 10
      }
    },
    {
      "label": "High Score #5",
      "short_label": "5th",
      "initials": {
        "start": 235,
        "encoding": "ch",
        "length": 6,
        "nibble": "low"
      },
      "score": {
        "start": 241,
        "encoding": "bcd",
        "length": 7,
        "nibble": "low",
        "scale": 10
      }
    }
  ],
  "audits": {
    "Bookkeeping": {
      "01": {
        "label": "Left Chute Coins",
        "start": 0,
        "encoding": "bcd",
        "length": 4,
        "nibble": "low"
      },
      "02": {
        "label": "Right Chute Coins",
        "start": 4,
        "encoding": "bcd",
        "length": 4,
        "nibble": "low"
      },
      "03": {
        "label": "Center Chute Coins",
        "start": 8,
        "encoding": "bcd",
        "length": 4,
        "nibble": "low"
      },
      "04": {
        "label": "Total Plays",
        "start": 12,
        "encoding": "bcd",
        "length": 4,
        "nibble": "low"
      },
      "05": {
        "label": "Total Replays",
        "start": 16,
        "encoding": "bcd",
        "length": 4,
        "nibble": "low"
      },
      "07": {
        "label": "Extra Balls",
        "start": 20,
        "encoding": "bcd",
        "length": 3,
        "nibble": "low"
      },
      "08": {
        "label": "Tilts",
        "start": 23,
        "encoding": "bcd",
        "length": 3,
        "nibble": "low"
      },
      "09": {
        "label": "Specials",
        "start": 26,
        "encoding": "bcd",
        "length": 3,
        "nibble": "low"
      },
      "10": {
        "label": "Times HGTD Awarded",
        "start": 29,
        "encoding": "bcd",
        "length": 3,
        "nibble": "low"
      },
      "14": {
        "label": "Highest Game To Date",
        "start": 44,
        "encoding": "bcd",
        "length": 7,
        "nibble": "low",
        "scale": 10
      },
      "14a": {
        "label": "HGTD Initials",
        "start": 38,
        "encoding": "ch",
        "length": 6,
        "nibble": "low"
      },
      "15": {
        "label": "Game Time",
        "suffix": " seconds",
        "start": 32,
        "encoding": "bcd",
        "length": 6,
        "nibble": "low",
        "scale": 10
      }
    }
  },
  "adjustments": {
    "Standard Adjustments": {
      "06": {
        "label": "Replay Percentage",
        "suffix": "%",
        "start": 59,
        "encoding": "bcd",
        "length": 2,
        "nibble": "low"
      },
      "11": {
        "label": "First High Score",
        "start": 51,
        "encoding": "bcd",
        "length": 2,
        "nibble": "low",
        "scale": 100000
      },
      "12": {
        "label": "Second High Score",
        "start": 53,
        "encoding": "bcd",
        "length": 2,
        "nibble": "low",
        "scale": 100000
      },
      "13": {
        "label": "Third High Score",
        "start": 55,
        "encoding": "bcd",
        "length": 2,
        "nibble": "low",
        "scale": 100000
      }
    }
  }
}