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    ianoid

    @klyball Good idea. Thanks for the response. ...

    @klyball Good idea. Thanks for the response.

    Actually what I did was swap out the 6502, simply because I have a few lying around, and that helped. Now I can get to the option screen by hitting...

    ianoid Today, 03:59 AM Go to last post
    Jannie

    Another question / observation. If I short...

    Another question / observation.

    If I short some rows/columns, on the keyboard connector on the board, I would expect characters to appear on the screen, correct?

    This does not happen, it...

    Jannie Today, 03:46 AM Go to last post
    TamaMan

    Thanks for the reply. ...

    Thanks for the reply.

    https://pekkaleppaluoto.com/accidental-empires/nec-multisync-3d/NEC-A1.PDF
    Are the appropriate G1 and G2 voltages mentioned in the service manual? PDF page 59? (58 in the...

    TamaMan Today, 03:43 AM Go to last post
    Jannie

    Indeed. What's frustrating me a bit is that I...

    Indeed. What's frustrating me a bit is that I need to use a RAM/ROM replacement board to get the machine to boot but it then covers the keyboard PIA so I can't get to its pins to measure what's going...

    Jannie Today, 03:35 AM Go to last post
    Tibs

    From a wiki page: The Model 4 was announced in...

    From a wiki page:

    The Model 4 was announced in the same press release (April 1983) as was the TRS-80 Model 100 laptop. The two computers were often marketed by Tandy/Radio Shack as a complementary...

    Tibs Today, 03:22 AM Go to last post