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helwie44 Professional

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  • helwie44

    Replied to the thread Yet another one....
    Post
    Hello Jaume,
    thank you for your work to "experience" the alphaTronic P2 successfully.

    After the first look - I would think the VTAC 5027 or similar type was defective.
    With my P2U and I mean with gpospi and/or netmercer these error images had on the
  • helwie44

    Post
    Hello HansTA ;
    I once showed my USB to V24 (RC 232C) stick here, which I then use from my laptop (USB) to my P2 / P2U.




    To do this, I have a signal routing from my short cable that goes to the 9 female connector and then to a standard 25-pin connector.



    I…
  • helwie44

    Post
    Tthat's sure to be a good idea.
    (Quote from HansTA)


    Some MOS commands are safe to test like FILL, DISPLAY or others. I wish you success!
  • helwie44

    Post
    Ok HansTA , exactly the first piece.

    Is there a SIGNAL plan of how the 9-pin connection with the V24 signal designation is implemented?
    So USB to V24 signals (here with 9-pin socket!).

    Du erkennen ja von 9 poligen Anschluss muss noch ein passendes kurzes
  • helwie44

    Post
    Hello HansTA ,
    Thank you, ok you have an alphaTronic P2.

    Then, as known, you should have a memory of 48 kB (from 4000h to 0FFFFh) and two BASF (6106 type) floppy drives are installed from your first link.
    These are probably drives with a single-sided read…
  • helwie44

    Post
    Hello HansTA ;
    I'm happy to see you here with an alphatronic P2 from Helsinki.
    You have already solved the first step with the memory problem.
    (Quote from HansTA)

    The MOS screen display is very good - and apparently in the basic state with the 48 kB memory…
  • helwie44

    Now follows jlopez.
    Follow