From:	"Florian Xaver" <dos DOT fire AT aon DOT at>
To:	<opendos AT delorie DOT com>
Subject:	Re: PKZIP 2.50 for DOS
Date:	Fri, 10 Nov 2000 19:53:12 +0100
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Reply-To:	opendos AT delorie DOT com

Another, better solution is to use INFOZIP. You can find it at
www.opus.co.tt/dave/.

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-----Ursprüngliche Nachricht-----
Von: Matthias Paul <PAUL-MA AT reze-1 DOT rz DOT rwth-aachen DOT de>
An: opendos AT delorie DOT com <opendos AT delorie DOT com>
Datum: Donnerstag, 09. November 2000 19:38
Betreff: PKZIP 2.50 for DOS


>Hi,
>
>Right now I cannot remember who it was, but a couple of weeks
>ago someone mentioned that he was not able to use PKZIP 2.50 for
>DOS under DR-DOS, while PKZIP 2.04 worked OK for him.
>I have run some tests and have come to the conclusion, that
>PKZIP 2.50's DPMI support fails under EMM386.EXE when DPMI
>is enabled (so far I tested only EMM386 3.27 as of DR-DOS 7.03).
>PKZIP 2.04 has (almost) no problems to use EMM386 DPMI support
>(but there have been a number of other problems).
>
>As long as PKWare does not fix these problems (has anyone already
>reported this to them?), a workaround is to set up an environment
>variable %PKWARE.INC% to point to the PKZIP 2.50 directory, for
>example:
>
> SET PKWARE.INC=c:\utl\archiver\pkzip.250
>
>Place a PKWARE.INI file in this directory with the following
>contents (only the DPMI= directive is actually necessary):
>
>[PKZIP]
>COMPRESS=extreme
>LISTCHAR=@
>DPMI=disable
>USELFN=disabled
>
>[PKUNZIP]
>DIRECTORIES=enabled
>DPMI=disable
>LISTCHAR=@
>
>This will forbid PKZIP/PKUNZIP to use DPMI. The backdraw is
>a noticeable performance fit (maybe 20%), but who cares, it's
>still fast enough IMHO... (BTW. PKZIP 2.04 sensed for a "PKZIP.CFG"
>variable and file name instead of PKWARE.INI.)
>
>Alternatively you can also disable DR-DOS' DPMI support by just
>typing "DPMI off" at the prompt, but this would also effect other
>programs (run in that task).
>
>It might also be useful to add something like:
>
> SET TEMP=c:\tmp
> SET TMP=%temp%
> SET PKTMP=%temp%
>
>to AUTOEXEC.BAT as well.
>
>Hope it help,
>
> Matthias
>
>-------------------------------------------------------------------
>Matthias Paul, Ubierstrasse 28, D-50321 Bruehl, Germany
>eMail: <Matthias DOT Paul AT post DOT rwth-aachen DOT de>
>Web  : http://www.rhrz.uni-bonn.de/~uzs180/mpdokeng.html
>-------------------------------------------------------------------
>

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