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Volume 003, Number 055, 14 Mar 1999

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  1. Re: Digest poqetpc.v003.n054 by Mark M Ulrich <marku@xxxxxxxx>

Digest Articles

Re: Digest poqetpc.v003.n054 by Mark M Ulrich <marku@xxxxxxxx>


From: Mark M Ulrich <marku@xxxxxxxx>
Subject: Re: Digest poqetpc.v003.n054
Date: Sat, 13 Mar 1999 22:33:58 -0500
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i agree

On Sat, 13 Mar 1999 19:10:05 -0800 (PST) poqetpc-errors@xxxxxxxx
writes:
>
>-------------- BEGIN poqetpc.v003.n054 --------------
>
>    001 - Bryan Mason <bmason@xxxxxxxx - Re: New user / Software 
>Compatibility
>
>* This is a Poqet PC Mailing List digest.  Information on
>* replying to messages in this digest can be found at the
>* end of the digest.
>
>
>--------------- MESSAGE poqetpc.v003.n054.1 ---------------
>
>From: Bryan Mason <bmason@xxxxxxxx>
>Subject: Re: New user / Software Compatibility
>Date: Fri, 12 Mar 1999 19:00:12 -0800
>MIME-Version: 1.0
>Content-Type: text/plain; charset="us-ascii"
>In-Reply-To: <199903100046.QAA05968@xxxxxxxx>
>
>If I remember correctly, older versions of PKWare products used the
>"string" assembly instructions of the 8086/88 to move data around.  
>The
>8086/88 had a problem where if an NMI occurred while these 
>instructions
>were being executed, unexpected results could occur and the machine 
>could
>lock up.
>
>That wasn't a problem on most IBM-PC/XT's and compatibles, because the 
>NMI
>was used really only to signify parity errors.  If you got a parity 
>error,
>the system would halt, so it wasn't a problem that the system would 
>lock up
>if you were doing a string instruction and an NMI occurred because of 
>a
>parity error.
>
>The problem was that the Poqet PC used NMIs extensively for its power
>management routines.  So the chances were pretty high that you would 
>get an
>NMI during an execution of a string instruction in PKZip, PKUnzip, or 
>PKLite.
>
>I know that Poqet asked PKWare to change their code, and they stopped 
>using
>the string instructions in PKLite -- I guess they also made the change 
>in
>PKZip/PKUnzip as well.
>
>-- Bryan
>
>At 04:46 PM 3/9/99, Scott Kinder wrote:
>>PKUNZIP.EXE version 2.04g works perfectly on the Poqet!
>>I was using version 2.01 (don't know how I ended up with that
>>version!). This is one of the most popular compression/
>>decompression (pkzip/pkunzip) utilities around. 
>>
>>It can be found at http://www.pkware.com/ 
>>
>>Thanks to Bill and Alain for setting me straight!
>>
>>Regards,
>>Scott
>>
>
>
>
>--------------- END poqetpc.v003.n054 ---------------
>
>
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>

---------------------Mark Morgan Ulrich-------------------------
Webmaster, The Windows CE for Student's Place : http://cestudent.tsx.org
Webmaster, The Official CoRTY Homepage : http://corty.tsx.org
marku@xxxxxxxx (regular e-mail)                    swimmy@fnol.net
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Date Created: 30 Nov 1996, Last Modified: 13 May 2009
Created by Bryan Mason - E-Mail: poqetpc<at>bmason<dot>com