Simeon Cran wrote in a message to all:

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 SC> The PMLM program that comes with SIO is a "Poor Man's Line
 SC> Monitor" that is able to show you what is happening on the
 SC> serial ports. It's a great little tool. 

Used it on occasion and, "yes", very handy...

 SC> But it got me wondering how it's done. 

I haven't a clue, other than to say that Ray Guinn is a "good" programmer.

 SC> ...when I started up Faxworks, Faxworks (which uses its own 
 SC> comms driver) was denied access to the port because I still had 
 SC> an open file handle on the port. 

I've found that FAXWORKS driver to be VERY unfriendly. It does not share a
port and can be tempermental at times...

 SC> Anyone got any ideas about how PMLM does it?

Yes, it's called, "FM"... f---ing magic...

Jerry McBride

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