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From: heff@flnexus.ATT.COM (Paul K Heffner)
Newsgroups: comp.sys.ibm.pc
Subject: Re: second serial port for AT&T 6300
Message-ID: <122@flnexus.ATT.COM>
Date: Tue, 27-Oct-87 08:29:10 EST
Article-I.D.: flnexus.122
Posted: Tue Oct 27 08:29:10 1987
Date-Received: Sat, 31-Oct-87 07:18:38 EST
References: <2259@sfsup.UUCP>
Distribution: na
Organization: AT&T-IS, Orlando, FL
Lines: 24

in article <2259@sfsup.UUCP>, ndj@sfsup.UUCP (N.Justus) says:
> 
> Can anyone tell me how I can add a second serial port to an AT&T 6300?
> Does anyone manufacture a card that will work in this machine (the card
> should contain 1 or more serial ports that can be configured for COMn, n>1)

I went in search of the same article for my 6300+ a few months ago. First I
bought a knockoff clone serial board which, as it turned out, could only 
be configured as COM1: or COM3: as bought. Most of the clone boards will
allow a second COM2: port by using a second ACE chip, a line driver chip
and a line reciever chip, and a pigtail cable. I sent the board back.

I finally broke down and bought the "official" IBM asynchronous board
at a sale price. This board is really nice, and can be configured to
be any of the "COM" designators with little effort.

Can anybody out there send me a Simul-task/Unix driver for a COM2:/tty2
port for the Plus? I only want to do some 1200 baud modem work through it.
I understand that there is one available with some Communications Manager
package, but all I really need is a driver. 


Paul Heffner
ATT, Altamonte Springs, Fl.