• By: Namco
  • Released: ???
  • Display: Vertical (upright)
  • Pinout: JAMMA
  • CPU: MC68000
  • Identifying Marks: The PCB itself has these markings in one corner: ND-1 GAME(B) PCB NAMCO. This is a rather small, high-tech PCB. Notice it's multi-layer too. Repairs would be "challenging". 3 ROM's (marked "NC2") are MAIN0, MAIN1, and SUB. Another port left of the JAMMA plug can be left unused (but the pin closest to the JAMMA plug, on the component side, provides the Right Audio, if you want stereo). There are only 2 dip-switches, TEST and FREEZE. Notice in one corner, there is a spot on the PCB where you can solder a microswitch to add a RESET button (which I've done).
  • The Games
    This PCB contains 7 games, selectable through menus (click for detailed images).
      Menus
      PacMan
      PacMan Arrangement
      DigDug
      DigDug Arrangement
      Rally-X
      Rally-X Arrangement
  • Test Mode
    Test mode provides these features:
    • Switch test (mentions 8 analog inputs and 2 additional dip-switches but I see nowhere on the PCB where these could be present)
    • Sounds Test (allows you to cycle through all sound effects and music)
    • Coin Settings (includes freeplay)
    • Game Options (music in attract, speaker mono/stereo, and individual game-options for each of the 7 games)
    • Object Test (aka sprite test)
    • Scroll Test (tests scrolling backgrounds and 2D zoom's)
    • A.D.S (accounting data)
      • This PCB keeps track of a truck-load of information about who plays it. In total, 8 screens worth of data! TOO BAD they didn't use some of that space to remember Galaga hi-scores!!!
      • Time, Credits, and Percentages for:
        - New vs. Continued games,
        - Single vs. Pair play.
        - Play vs. Not being played.
      • Comparisons regarding the games:
        - Credits spent on each game,
        - Time spent playing each game,
        - Percentage of time playing each game.
      • For each individual game:
        - Credits spent, 1P and 2P.
        - How many plays each stage has recieved (increasing stages have fewer plays as the players are more likely to have died before that stage)
    • Color Test (R, G, B, and White color-bars)
    • Convergance Test (typical bars display)
  • Freeze Switch
    This switch simply freezes the machine with the current display, allowing for nice screenshots, etc.
  • Comparing the NCV1 and NCV2 PCB's
    Placed side-by-side, I see very few differences.
    • The PCB's identification is slightly different (NCV1 = ND-1 Game PCB", NCV2 = ND-1 Game(B) PCB)
    • NCV2 has two ROM chips (labeled CG0/CG1). NCV1 has only the first one (CG0).
    • The Voice chips are marked different, however, I believe it is because the manufacturer changed.
    • The KEYCUS (antipiracy?) chip is different between the two PCB's. NCV1 is marked with a KC001, NCV2 is marked KC002.
    • The part-layout on the PCB's is identical, however, the traces are routed in significantly different ways.