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    per

    The PGC has RGB with a dedicated composite sync....

    The PGC has RGB with a dedicated composite sync. A lot of regular VGA monitors are capable of displaying the picture from a PGC with a simple 9-15 pin adapter.

    But as mentioned, most VGA cards use...

    per Today, 10:17 PM Go to last post
    Dwight Elvey

    Here is a manual:...

    Here is a manual:
    https://www.hartetechnologies.com/manuals/Northstar/North%20Star%20ZPB-A%20Processor%20Manual.pdf
    It shows that there is a cut needed if the from panel generates MWRITE, which the...

    Dwight Elvey Today, 10:04 PM Go to last post
    Dwight Elvey

    I am not familiar with this board. There were a...

    I am not familiar with this board. There were a number of Z80 boards created to be able to connect to the IMSAI and ALTAIR front panels. This looks to be one of them. It looks to be able to have a...

    Dwight Elvey Today, 09:44 PM Go to last post
    KLund1

    Here is the CPU card. There seem to be two...

    Here is the CPU card.
    There seem to be two missing IC's on the lower left of the card, LS75's.
    Also in the 2nd column from the left the second IC down from the top of the card has pin 11 not in...

    KLund1 Today, 09:32 PM Go to last post
    deramp5113

    Sounds like a good plan. For short programs, I’ve...

    Sounds like a good plan. For short programs, I’ve found that 200ms of delay after CR gives reliable loads. For larger programs, 300ms is necessary. Not easy to reliably translate that into a number...

    deramp5113 Today, 08:59 PM Go to last post