

NOVELL TECHNICAL INFORMATION DOCUMENT

DOCUMENT PROCESSING INFO:  THIS DOCUMENT REPLACES FYI-M-1605
TITLE:  QUARTERDECK'S DESQVIEW
DOCUMENT ID:  TID800053
DOCUMENT REVISION:  A
DATE:  17AUG94
AUTHOR:  CEREKSON;DPARTRID
ALERT STATUS:  Yellow
DISTRIBUTION:  Public
INFORMATION TYPE:  Symptom Solution
README FOR:  NA
NOVELL PRODUCT CLASS:

Desktop Products

NOVELL PRODUCT and VERSION:

DR DOS 6.0

CATEGORY:

Installation

ABSTRACT:

N/A

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NOVELL MAKES EVERY EFFORT WITHIN ITS MEANS TO VERIFY THIS INFORMATION. 
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SYMPTOM

Problems configuring DESQVIEW for use under DR DOS 6.

CAUSE

DesqView is a multi-tasking DOS based program that accomplishes its
multi-tasking by bank-switching applications in and out of conventional
memory. It can also use XMS UMB's (Upper memory blocks) and the HMA (High
Memory Area) for storing its own program code and data.  Many of these
features are similar to those offered by DR DOS 6.0. This could make it
difficult to determine which memory manager and other utilities should be
used for DesqView.

SOLUTION

For maximum performance of DesqView under DR DOS 6.0, use QEMM386.SYS
instead of EMM386.SYS and make sure that nothing from DR DOS is taking
control of the A20 line (in other words, using the HMA.)

QEMM386.SYS should be used instead of EMM386.SYS, because the LIM driver
which is a part of QEMM386.SYS has been enhanced for DesqView
multi-tasking in conventional memory.


HIDOS.SYS can be used along with QEMM386.SYS to relocate the operating
system but should be avoided when using DesqView. Setting HIDOS=OFF will
not keep DR DOS completely out of the HMA.

To keep DRDOS 6.0 out of the HMA for DesqView:

1)  Make sure that the /MH option is not used on any of the DR DOS 6.0
commands that support it such as SHARE. The SHELL command should have the
switch /MU added to prevent its relocation to the HMA.

2)  Make sure that the HIBUFFERS command is not used in the CONFIG.SYS
file.  This command will use the HMA even if the Kernel does not.

3)  Make sure that the /BDOS option reads: /BDOS=AUTO if you use
EMM386.SYS. Remember that EMM386.SYS is not recommended for DesqView.


(NOTE: If you are unsure if the HMA is being allocated to DR DOS 6.0 
instead of DesqView, use MEM /F before starting DesqView. This command
will display an empty box if DR DOS 6.0 is not using the HMA.)

Here is an example CONFIG.SYS that will work properly with DesqView:

SHELL=C:\DRDOS\COMMAND.COM C:\DRDOS6 /P /MU /E:512
BREAK=ON
BUFFERS=5
FILES=30
LASTDRIVE=M
HISTORY=ON, 256, ON, OFF, OFF
DEVICE=C:\QEMM60\QEMM386.SYS R:2 NOVIDEOFILL RAM ROM ST:
FXST=F000
DEVICE=C:\QEMM60\LOADHI.SYS /R:3 C:\DRDOS\PCKWIN.SYS
DEVICE=C:\QEMM60\LOADHI.SYS /R:1 C:\MOUSE\MOUSE.SYS
DEVICE=C:\SSTORDRV.SYS
DEVICE=C:\DEVSWAP.COM
HIDOS=ON

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