Path: utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!cs.utexas.edu!ut-emx!boerner
From: boerner@ut-emx.UUCP (Brendan B. Boerner)
Newsgroups: comp.sys.ibm.pc
Subject: Re: PC-NFS under DESQview 2.66 ( was Re: 3Com 3C503 w/PC-NFS under Windows 2.11)
Keywords: PC-NFS, Telnet, Windows
Message-ID: <30610@ut-emx.UUCP>
Date: 29 May 90 04:00:12 GMT
References: <98@einstein.eds.com> <3305@rupert.misemi> <830@bbt.UUCP> <90176@elsie.UUCP>
Reply-To: boerner@emx.UUCP (Brendan B. Boerner)
Organization: UT Austin Computation Center, Microcomputer Technologies
Lines: 33

In article <90176@elsie.UUCP> ado@elsie.UUCP (Arthur David Olson) writes:
>> > . . .has anyone had any success running TELNET under DESQVIEW 2.26?
>> > It always seems to "hang" if run under a multi-window DESQVIEW session. . .


Sounds like a problem I am having w/using the Clarkson Packet Driver
and NCSA Telnet.  I would load the PD, start DV, open a window, start
Telnet, and then open a Big DOS window.  As soon as I did that, the
machine would lock.  Opening a small DOS window would not lock the
machine, but opening two would.

I finally got through to DV tech support on Compuserve and found out
what may be going on.  Because I am opening a Big DOS window, or 2
small DOS windows, DV is swapping the Telnet code out to expanded
memory.  The packet driver, which was started before DV, tries to
deliver a packet to the telnet app.  Since the telnet app is not there,
it is doing something nasty to the app which is there.

The guy told me that this is a problem with loading certain drivers
before DV which attempt to access an applications memory space
asynchronously.  He said that a driver could determine if the target
app is loaded into memory using the External Driver Interface which is
documented in the DV API Reference Manual.

Since you don't have the PC-NFS source, I guess your only avenue is to
contact Sun and see if they can do anything.

Brendan
--
Brendan B. Boerner		Phone: 512/471-3241
Microcomputer Technologies	The University of Texas @ Austin
Internet: boerner@emx.utexas.edu     UUCP: ...!cs.utexas.edu!ut-emx!boerner
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