1. Namco 54xx

    In Pole Position the Namco 54xx custom chip appears in the Miscellaneous Sound Generators section. Here is the portion of the schematic redrawn.

    Pole Position Noise Generation Circuit

    Chip Operation

    We know the Namco 54xx is a Fujitsu MB8844 MCU with a mask ROM. Thanks to Guru, we actually have the ROM contents, so we …

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  2. Namco 52xx

    In Pole Position the Namco 52xx custom chip appears in the Speech Processor and Memory section. Here is the portion of the schematic redrawn.

    Pole Position Speech Generation Circuit

    Chip Operation

    We know the Namco 52xx is a Fujitsu MB8843 MCU with a mask ROM. Thanks to Guru, we actually have the mask ROM contents …

    read more

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