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Thread: Help identifying a mod made to a Commodore 128

  1. #1
    Join Date
    Dec 2016
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    New Jersey
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    Default Help identifying a mod made to a Commodore 128

    I am attempting to resurrect a modded 128 that I acquired on the cheap (yes it is filthy to boot). See the picture attached.

    Ignoring the normal bodge wire on the z80 from the factory, what is the other mod with wires going into the board near R27 in the middle, down by U37 at the bottom, etc.

    These wires are attached to a switch, also pictured.

    I have never seen this mod before anyone know what it is?

    IMG_1777.jpg

  2. #2

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    Can you post a higher resolution image? I'm having trouble identifying the wire you're indicating.
    I use my C128 because I am an ornery, stubborn, retro grouch. -- Bob Masse
    Machine room: http://www.floodgap.com/etc/machines.html

  3. #3
    Join Date
    Dec 2016
    Location
    New Jersey
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    Default

    Quote Originally Posted by ClassicHasClass View Post
    Can you post a higher resolution image? I'm having trouble identifying the wire you're indicating.
    The forum automatically shrinks images. Here is a link to a Hi-Res photo:

    https://imgur.com/a/bP7siP5

    Thanks!
    Chris

  4. #4

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    I don't see a U37. I do see a C37, but the red wire near there actually goes right by R27 and up to a connection point at the top of the board I can't see, possibly near one of the ports.
    I use my C128 because I am an ornery, stubborn, retro grouch. -- Bob Masse
    Machine room: http://www.floodgap.com/etc/machines.html

  5. #5
    Join Date
    Dec 2016
    Location
    New Jersey
    Posts
    242

    Default

    Quote Originally Posted by ClassicHasClass View Post
    I don't see a U37. I do see a C37, but the red wire near there actually goes right by R27 and up to a connection point at the top of the board I can't see, possibly near one of the ports.
    Well, surprisingly the machine works. I've flipped the mystery switch a couple times with no discernible effect.

    I will take better pictures and see if Bil Herd has any ideas.

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