Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!iuvax!rutgers!carssdf!usenet
From: usenet@carssdf.UUCP (John Watson)
Newsgroups: comp.unix.xenix
Subject: Re: COM3 & COM4 under SCO Xenix ?
Keywords: xenix com serial
Message-ID: <239@carssdf.UUCP>
Date: 21 Mar 90 01:18:22 GMT
References: <3347@trantor.harris-atd.com>
Distribution: na
Organization: C.A.R.S.,Middlesex,NJ
Lines: 20

In article <3347@trantor.harris-atd.com>, wcurtiss@x102c.harris-atd.com (Curtiss WC 67625) writes:
> I am trying to install a serial card configured for COM3 and COM4 (INT 3 & 4,
> I/O Addr 3E8 & 2E8) in a machine which already has COM1 and COM2 (INT 3 & 4,
> I/O Addr 3F8 & 2F8).  SCO says it can't be done and I should get a multiport
> card.  This is not an option due to project contraints.  Has anyone written a
> serial driver that will handle the above situation?
> 
IT CAN BE DONE!, but I prefer to use int's 33 & 34 by soldering on a couple
of wires onto an unused backplane connector and soldering jumper plugs on
the other end of the wires, to connect to the board.

Then go into /usr/sys/io/sioconf.c in the usual way as per several past
articles.  Don't forget that your new minor device numbers with be 4 and 12,
along with the orriginal 0 and 8.  Of course extra bits for modem control
apply the same.

The driver is already there and IT WORKS.  Every rev since 2.2 that I have
tried, both 286 & 386.

...!rutgers!carssdf!usenet