• Digital Group HAM board?

    From John Crane@21:1/5 to All on Mon Feb 5 22:00:47 2024
    Though not technically CP/M; I recently acquired a HAM board for my Z-80 digital group system. Excellent condition, but I can't find any docs
    for it. Can someone point me in the right direction?

    Thanks,

    -J

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  • From Dennis Boone@21:1/5 to All on Tue Feb 6 15:23:01 2024
    Though not technically CP/M; I recently acquired a HAM board for my Z-80 digital group system. Excellent condition, but I can't find any docs
    for it. Can someone point me in the right direction?

    Herb Johnson appears to have a paper manual:

    https://www.retrotechnology.com/restore/digital_crompton.txt

    De

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  • From Dennis Boone@21:1/5 to All on Tue Feb 6 15:16:08 2024
    Though not technically CP/M; I recently acquired a HAM board for my Z-80 digital group system. Excellent condition, but I can't find any docs
    for it. Can someone point me in the right direction?

    Would be neat to see photos!

    De

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  • From John Crane@21:1/5 to Dennis Boone on Tue Feb 6 11:11:25 2024
    On 2/6/24 9:23 AM, Dennis Boone wrote:
    > Though not technically CP/M; I recently acquired a HAM board for my Z-80
    > digital group system. Excellent condition, but I can't find any docs
    > for it. Can someone point me in the right direction?

    Herb Johnson appears to have a paper manual:

    https://www.retrotechnology.com/restore/digital_crompton.txt

    De


    Hard to tell if it's really a DG manual or something else.
    Hard to tell much of anything on that site.
    I do know other manufacturers were making Ham interface cards at the time.

    I recall I did buy some manuals from Herb in the past (maybe late 20th
    century) before I went all digital. Nice to see he's still around.

    Overall, the DG system is progressing nicely.
    I have the quad Phi-Deck, the Vortrax, and now the Ham card.
    And the nice metal cases too, clean and unmarked.

    -J

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