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Hi,

I have a gizmo attached on serial port and need to detect
changes of controls signals DSR, DTR etc. no data, just
changes (edge). I do it with MSCOMM.ocx and it works,
but only when is CPU on idle and windows messages are
delivered on time. When is load over 20% timing of the
messages sent is broken and can't be decoded properly.

Please let me know with any idea how to tap serial's driver's
IRQ via callback.

Thank you,

VIeditorlover

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