I am trying to understand synaser.pas. In its tBlockSerial.GetPortAddr routine, the Windows EscapeCommFunction procedure is called with 10 as its 'dwfunc' argument. The documented possibilities for this argument (search Windows.pas for "SETXOFF"; or search for EscapeCommFunction on the Web) range only 1 to 9. What does 10 do?

Robert R. Fenichel, M.D.
reply to b...@fenichel.net
see also http://www.fenichel.net 
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