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    pgru2

    Not late and not early MDA question

    Hi and thank You for answering in advance

    There are some IBM MDA cards which look like having, a soldering contacts for "pinouting" the color. I guess that they are not late MDA(without it), but...

    pgru2 Today, 02:08 AM Go to last post
    ClausB

    The TI machines of the 70s had 4-bit serial or...

    The TI machines of the 70s had 4-bit serial or even single-bit serial CPUs but their working registers and memories were 64 bits wide. A single CPU instruction would operate on a whole register or...

    ClausB Today, 02:06 AM Go to last post
    pgru2

    Thank You for answer.

    Thank You for answer.

    pgru2 Today, 02:03 AM Go to last post
    clh333

    I'm glad you have made progress with your issue. ...

    I'm glad you have made progress with your issue. It wasn't clear from your post which motherboard you were working with; an IBM 5150 / 5160 perhaps? If so there are switches that must be set...

    clh333 Today, 01:47 AM Go to last post
    JonB

    Might be off topic, slightly, but last year I was...

    Might be off topic, slightly, but last year I was given a working Superbrain II board. I soon had a PSU and made up the "intermediate" (provides access to the serial ports) and video mixer (to give a...

    JonB Today, 01:45 AM Go to last post