Sperry IT & xtra RS232 ports

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#7817

From: tsmith
Date: Fri, 05 Sep 1986 01:48

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{line eater food}

The Sperry IT can be configured with 2 boards of 4 additional
RS232 ports each (for a total of 8).  Does anyone out there have
any idea how one accesses serial ports in excess of 2?  Norton's book
"Programmers Guide to the IBM PC" indicates the original design of the
IBM PC allowed for more than 2 serial ports.  He does not give any
clue on how the additional ports are accessed - INT 0x14?
ANy advice would be appreciated...please E-Mail responses.
TJ

-- 
Thomas J. Smith @ MCC Software Technology
tsmith@mcc.com  
sally!im4u!milano!tsmith

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!husc6!ut-sally!im4u!milano!tsmith
From: tsmith@milano.UUCP
Newsgroups: net.micro.pc
Subject: Sperry IT & xtra RS232 ports
Message-ID: <2258@milano.UUCP>
Date: Thu, 4-Sep-86 21:48:43 EDT
Article-I.D.: milano.2258
Posted: Thu Sep  4 21:48:43 1986
Date-Received: Fri, 5-Sep-86 03:18:15 EDT
Sender: tsmith@milano.UUCP
Organization: MCC, Austin, TX
Lines: 15
Keywords: Sperry, RS232, etc.