

NOVELL TECHNICAL INFORMATION DOCUMENT

TITLE:  QEMM & DR DOS 6
DOCUMENT ID:  TID800008
DOCUMENT REVISION:  A
DATE:  15AUG94
ALERT STATUS:  Yellow
README FOR:  NA

NOVELL PRODUCT and VERSION:
DR DOS 6.0

ABSTRACT:
NA

-----------------------------------------------------------------
DISCLAIMER
THE ORIGIN OF THIS INFORMATION MAY BE INTERNAL OR EXTERNAL TO NOVELL. 
NOVELL MAKES EVERY EFFORT WITHIN ITS MEANS TO VERIFY THIS INFORMATION. 
HOWEVER, THE INFORMATION PROVIDED IN THIS DOCUMENT IS FOR YOUR INFORMATION
ONLY.  NOVELL MAKES NO EXPLICIT OR IMPLIED CLAIMS TO THE VALIDITY OF THIS
INFORMATION.
-----------------------------------------------------------------

SYMPTOM

CONFIGURING QEMM386 WITH DR DOS 6.0

ISSUE/PROBLEM

The third party compatibility unit at Quarterdeck reports that DR DOS 6
and QEMM386 v6 are compatible.  While there is a general compatability
with QEMM there are some DR DOS functions that may not work as expected
with QEMM and the OPTIMIZE program.

SOLUTION

Listed below are suggestions on how to get the best possible performance
from DR DOS and QEMM386.

OPTIMIZE

OPTIMIZE does not recognize all of the CONFIG.SYS enhancements offered by
DR DOS 6, such as SWITCH, but it will work properly otherwise.

If you are using SuperStor do not allow OPTIMIZE to relocate the SuperStor
driver into upper memory with the LOADHI command. This will cause
SuperStor to fail. For additional information on using SuperStor with QEMM
please read FYI-M-1202.

STEALTH

Quarterdeck's STEALTH technology actually relocates/re-maps ROM's off into
extended memory, thus freeing up more contiguous upper memory for use by
QEMM. STEALTH has two specific modes of operation specified by using ST:F
or ST:M on the QEMM device driver line.  It is important to understand
that an advanced feature like this is difficult to troubleshoot.  The QEMM
documentation (written, and on-line via the OPTIMIZE program) gives some
very helpful "first-step" hints on trouble-shooting.

If you are using QEMM with DR DOS 6.0 and are experiencing unusual
behavior, try removing the ST option on the QEMM device driver line.

STEALTH can confuse many disk caches which use expanded memory (EMS). This
is due to the way STEALTH technology uses the LIM page frame. To prevent
data corruption advanced hard disk reads and writes are automatically
disabled by SuperPCK when STEALTH is used. This is equivalent to the
command line option /H-.

-----------------------------------------------------------------
Any trademarks referenced in this document are the property of their
respective owners.  Consult your product manuals for complete trademark
information.
-----------------------------------------------------------------
