Path: utzoo!yunexus!geac!syntron!jtsv16!uunet!seismo!sundc!pitstop!sun!decwrl!labrea!rutgers!att!whuts!homxb!hropus!ki4pv!cdis-1!cdin-1!dsinc!lgnp1!prapc2!paulr
From: paulr@prapc2.UUCP (Paul Raulerson)
Newsgroups: comp.unix.microport
Subject: How to get uPort to recognize COM3 & COM4.
Keywords: microport communications com3
Message-ID: <71@prapc2.UUCP>
Date: 24 Oct 88 04:00:00 GMT
Article-I.D.: prapc2.71
Reply-To: paulr@prapc2.UUCP (Paul Raulerson)
Organization: Paul Raulerson & Associates Norristown, PA
Lines: 25

I need to know how to get uPort to recognize COM3 &4 without 
purchasing an intelligent communications card. I tried the simple
expeidient of telling ttypatch to create com3, with the interrupt 
structure as so:
			IRQ=4, BASE=3e8H 
which DOS recognized right away, but uPort choked on.  I assume 
by this failure I have to play games with the kernal, or more
specifically with the asy driver in the kernal.  I looked in the
dfile.wini configuration file and found that the max number of
serial ports supported was 4, but am at a loss what else to change
to make things happy.  The line printer seems to have three vectors,
while the asy driver seems to have only 2, should I "steal" one of the
unused line printer vectors?  

Any input/help would be much appreciated!  

Thanks
 


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