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From: slerner@sesame.UUCP (Simcha-Yitzchak Lerner)
Newsgroups: net.micro.pc
Subject: Re: Xenix on PC-AT questions
Message-ID: <354@sesame.UUCP>
Date: Sun, 13-Oct-85 11:53:31 EDT
Article-I.D.: sesame.354
Posted: Sun Oct 13 11:53:31 1985
Date-Received: Tue, 15-Oct-85 05:53:46 EDT
References: <2235@sdcc6.UUCP>
Organization: Lotus Development Corp
Lines: 28

>
> 
> 1. Is there a multiport board serial RS-232 type board
>    available now with software drivers to support /dev/ttynn's
>    other than the board made by digigraphics?
> 

There are a few boards out there that add 8 or 16 ports to a PC or AT,
*BUT* there is a catch.  The PC only has 2 interrupts available to com (1&2).
Therefore this type of card has to either:
  Have the ports polled for characters
or
  Have the ports share an interrupt vector with the driver checking to see
who is calling.

Regretfully, I don't have any more info on hand.  Any PC rag readers out
there with more info?

-- 
Opinions expressed are public domain, and do not belong to Lotus
Development Corp.
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Simcha-Yitzchak Lerner

              {genrad|ihnp4|ima}!wjh12!talcott!sesame!slerner
                      {cbosgd|harvard}!talcott!sesame!slerner
                       talcott!sesame!slerner@harvard.ARPA