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  • MarshallSoft Comm Library Problem

    I'm developing a digital upgrade for a plant system that uses
    comports COM1 through COM4 running under MSDOS V6.22. The ports
    are opened and closed one at a time such that only two are open
    at the same time.

    The MarshallSoft library uses the SioDone function to close an
    open port. My problem is this. When I close an open port using
    this function, reopening the port results in strange things
    happening. Mike Marshall is looking into the problem but I would
    like advice from anyone else who might have seen this problem
    before and resolved it.

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  • #2
    Nothing like this has been reported to Tech Support here... sorry!

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    Lance
    PowerBASIC Support
    mailto:[email protected][email protected]</A>
    Lance
    mailto:[email protected]

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    • #3
      Lance,

      The problem has been resolved and most likely was not caused by
      the MarshallSoft PB/DOS communication library. An errant flow
      transmitter with an RS-232 interface was doing strange things
      which in conjunction with other timing problems caused the
      appearance of a communication software problem. We are not sure
      of the exact root cause of the problem but MarshallSoft library
      problems may be safely ruled out.

      Thanks for replying.

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