Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!spool.mu.edu!uunet!munnari.oz.au!csource!david
From: david@csource.oz.au (david nugent)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Need **LOTS** of COM ports
Message-ID: <1874@csource.oz.au>
Date: 20 May 91 08:05:04 GMT
Article-I.D.: csource.1874
References: <1991May16.205258.4191@dosli.govt.nz> <1991May19.163538.882@uvm.edu>
Organization: Unique Computing Pty Ltd, Melb, Aust.
Lines: 21

blaise@kira.UUCP (Christopher Blaise) writes:

>From article <1991May16.205258.4191@dosli.govt.nz>, by srlncnc@badger.dosli.govt.nz (Chris Crook):
>> Is there any way of putting more than 4 COM ports onto a PC for a 
>> bulletin board application.  

> Look into a digiboard (name of manufacturer escapes me).  TBBS uses
> it exclusively, and the configuration that it recommends (never tried it
> with any others), is simply using COM1 and/or COM 2 with different 
> interrupts for each line/modem...


Ah.. but the Digiboard is one of those neat devices which can share IRQ's
between different COM ports.  Provided your software understands this, and
perhaps can take advantage of the shared port mask available on the bus,
then you shouldn't have any problems in using them all on the same IRQ.

-- 
 David Nugent                                      Unique Computing Pty Limited
 Communications/PC/Unix Consulting           3:632/348@fidonet 28:4100/1@signet
 Internet/ACSnet: david@csource.oz.au      Uucp: ..!uunet!munnari!csource!david