Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!spool.mu.edu!samsung!umich!sharkey!nstar!larry
From: larry@nstar.rn.com (Larry Snyder)
Newsgroups: comp.unix.sysv386
Subject: Re: same interrupt, different addresses?
Message-ID: <1991Feb05.151737.27134@nstar.rn.com>
Date: 5 Feb 91 15:17:37 GMT
References: <9102042023.AA04935@enuxha.eas.asu.edu>
Organization: Northern Star Communications, Limited
Lines: 16

gomez@ENUXHA.EAS.ASU.EDU (Jose L. Gomez-Rubio) writes:

>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?

it depends on the design of the com boards - 

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

DFI and AST make such a beast - as well as Comtrol and Digiboard.

-- 
   Larry Snyder, NSTAR Public Access Unix 219-289-0287 (HST/PEP/V.32/v.42bis)
                        regional UUCP mapping coordinator 
  {larry@nstar.rn.com, ..!uunet!nstar!larry, larry%nstar@iuvax.cs.indiana.edu}