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Thread: AT128 -- PC keyboard -> C128D/DCR adapter

  1. #1
    CodeKiller's Avatar
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    Default AT128 -- PC keyboard -> C128D/DCR adapter

    AT128 is a PC AT or PS/2 keyboard to Commodore 128D/DCR* adapter.
    Compatible with any speed of keyboard with scan mode 2 as default**. (DIN type can be used with regular DIN->PS/2 adapters)
    *C128DCRs require a wire to be installed for this adapter to work (+5V from C71 to pin4 of the keyboard connector) -- also the adapter may not stay flat but bends up a bit to have space for the PS/2 connector on desk but should connect without problem
    **keyboards with excessive pull-down resistors (rare) may not work but the adapter can be modified to handle them (i can help if needed)

    Disclaimer: Yes, I'm aware the presence of the C=Key adapter, but this project does not use any design or code from that. It's built entirely from scratch.

    Price: 30€
    Shipping: 7€ world wide flat rate

    Click image for larger version. 

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  2. #2
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    price drop: 25€ / piece
    (shipping the same)

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    I am interested

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    Just bumped into this piece of hardware. I am interested to buy one.

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    PM sent

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    Can confirm that the adaptor does a good job. Mine is working without the extra wire which I had forgot to add until I saw the picture above again tonight.
    I did find that it would not go into the keyboard socket with the screws at the front so I removed them then after plugging the board in screwed them back in from the rear which also attaches the board to the keyboard socket .

  7. #7
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    The wire only needed in DCR (metal cased) computers.
    The screws may be a little bit big, but usually the adapter makes good contact even if the screws are not removed.

    This is the last one of the adapters for sale.
    Last edited by CodeKiller; 11th December 2017 at 22:23.

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