Newsgroups: comp.os.msdos.apps
Path: utzoo!utgpu!cunews!bnrgate!bigsur!bcars53!mussar
From: mussar@bcars53.uucp (G. Mussar)
Subject: Re: Meaning of "Packed File Is Corrupt" Message??
Message-ID: <1990Dec10.163043.23747@bigsur.uucp>
Keywords: packed file
Sender: news@bigsur.uucp
Organization: Bell-Northern Research, Ottawa, Canada
References: <16069@ists.ists.ca> <1990Dec9.194401.16049@bigsur.uucp> <5085@bwdls58.UUCP>
Distribution: na
Date: Mon, 10 Dec 90 16:30:43 GMT

In article <5085@bwdls58.UUCP> mlord@bwdls58.bnr.ca (Mark Lord) writes:
>In article <1990Dec9.194401.16049@bigsur.uucp> mussar@bcars53.uucp (G. Mussar) writes:
><
><Acutally, the code that unpacks expects that the A20 gate is closed so that
><memory references beyond the end of the last segment will wrap into the first
><64K. The real problem is that the A20 gate is being left open on the 
><malfunctioning system. There are utilities around to display the stat of
><the A20 gate and to turn it off, however, your BIOS should be turning it
><off on POST. I've heard that at least one manufacturers BIOS defaults
><this A20 gate open unless you know the magic incantation to close it. Sigh.
><
>
>Thanks for the wisdom, Gary.  
>
>I had this problem like something wild after installing HYPERDSK for the
>first time (older version than current).  Seems it was leaving the gate
>wide open and the unpackers were leaving the pasture.  The newer release
>doesn't seem to have this problem.  Or maybe it was the QEMM 5.11 upgrade.. ?
>-- 
I believe Hyperdisk 4.10 had a switch that you could throw to close the A20
gate, but 4.11 actually closed the gate all by its lonesome. Seems that more
than just one person was having a few difficulties.

--
-------------------------------------------------------------------------------
Gary Mussar  |Bitnet:  mussar@bnr.ca                  |  Phone: (613) 763-4937
BNR Ltd.     |  UUCP:  ..uunet!bnrgate!bcars53!mussar |  FAX:   (613) 763-2626