MarshallSoft Comm Library Problem

[Phil Porter]

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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[Lance Edmonds]

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

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

[Phil Porter]

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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