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(Topic ID: 51221)

Stern/Bally MPU17/35/100/200 I/O Address Space

By Hamster

10 years ago



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  • Latest reply 10 years ago by Hamster
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    #1 10 years ago
    OP
     
    HAM

    Hamster

    Pinside member

    US Brandon, FL

    12y 35,650 27 6

    I can't find where i put these down in my notes, but does anybody know the base address for the U10/U11 6821 I/O Chips ?

    Thanks-

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    #2 10 years ago
     
    AMS

    barakandl

    nvram.weebly.com

    12y 132K 10,413

    Find a MPU-200 schematic. I am pretty sure stern noted this.

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    #3 10 years ago
    OP
     
    HAM

    Hamster

    Pinside member

    US Brandon, FL

    12y 35,650 27 6

    it only lists rom/ram space ( if you have it loaded with 16K roms)

    U1 -> 0x1000 to 0x17FF
    U2 -> 0x5000 to 0x57FF
    U5 -> 0x1800 to 0x1FFF
    U6 -> 0x5800 to 0x5FFF

    U7 -> 0x0000 to 0x007F
    U8 -> 0x0200 ( Upper 4 Bits )
    U13 -> 0x0200 ( Lower 4 Bits )

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