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From: wcgo@mtuxo.UUCP (w.ortel)
Newsgroups: net.micro.att
Subject: Re: 6300+ questions
Message-ID: <1927@mtuxo.UUCP>
Date: Mon, 25-Aug-86 16:12:31 EDT
Article-I.D.: mtuxo.1927
Posted: Mon Aug 25 16:12:31 1986
Date-Received: Tue, 26-Aug-86 04:59:38 EDT
References: <982@isis.UUCP>
Organization: AT&T Information Systems Labs, Holmdel NJ
Lines: 35

> I have several, related questions:
> 	1)  has anyone tried to hang another terminal off the 6300+??
> 	2)  is the OS handicapped into being _only_ a single
> 	    user system, or is init a true init, and spawns processes for
> 	    multiple logins?
> 	3)  is there support for hanging another terminal off of a serial card?
> 	4)  is there a serial card available?
> 	5)  if someone has hung another terminal on one, how
> 	    has performance been with all (both?) terminals active?
> 	6)  if this has not been done, what do you folks using
> 	    one do when your process hangs, you need to kill it,
> 	    but your program is trapping signals, and handling
> 	    them incorrectly?  I'm used to killing a process
> 	    from another terminal - how do _you_ do it?
> 
> Jay Batson
>        ihnp4!onecom!\
>                      isis!jay
> seismo!{hao,nbires}!/

The UNIX that is available on the PC 6300 PLUS is truly a multi-user
system.  The machine is supplied with a serial port, so an external
terminal can be used in addition to the system console. 
The Hardware Reference Manual and Integrated Software Development
Guide have the necessary information for developing a serial card and
UNIX driver.  Four and eight-port cards and a driver are available
from CTC Systems, Inc, 10311 S. DeAnza Blvd, Cupertino, CA (408)725-0501.

Of course, performance depends on the system load.  More expensive 
systems can handle more users;  however, the PLUS should be
satisfactory for many applications with two, three, or more users.

Bill Ortel
AT&T, Lincroft NJ (201)576-3242 (mtuxo!wcgo)
PC 6300 PLUS Product Management