Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!ames!pasteur!ucbvax!ENUXHA.EAS.ASU.EDU!gomez
From: gomez@ENUXHA.EAS.ASU.EDU (Jose L. Gomez-Rubio)
Newsgroups: comp.unix.sysv386
Subject: same interrupt, different addresses?
Message-ID: <9102042023.AA04935@enuxha.eas.asu.edu>
Date: 4 Feb 91 20:23:06 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: gomez@enuxha.eas.asu.edu (Jose L. Gomez-Rubio)
Organization: Arizona State Univ, Tempe AZ
Lines: 8


I'm looking to add a COM3 & COM4 serial port to my 386 UNIX box.  Is it
true that each COM port must have it's own interrupt or can they share
an interrupt but reside at a different address?

I currently have COM1 as INT 4 and COM2 as INT 3.  Thanks for the info.

Anyone know of a COM3&4 board that does not use INT 4 & 3?