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2301.TXT
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1993-03-31
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___________________________________________________________________________
STACKER NOTE STACKER NOTE
Title: DR DOS and Stacker
STAC FAX Index #2301 - 2/20/92
___________________________________________________________________________
Background.
Stacker is compatible with Digital Research DOS (DR DOS) versions 5.0 and
6.0. However, there are some special considerations when using either
version of this operating system.
DR DOS 6.0.
1. DR DOS 6 is bundled with another file compression program. There
is no reason to use this program if you have chosen to use Stacker.
Stacker gives you better speed, better compression, a smaller
device driver, and more advanced features than the compression program
that comes with DR DOS.
2. Installing DR DOS 6.0 after Stacker is installed may require a special
procedure. See STAC FAX index #2303.
"Upgrading to DR DOS 6.0 with Stacker Installed" for details.
DR DOS 5.0 and 6.0.
If you configure Stacker to use EMS for its cache, or if you load the
Stacker device driver into upper memory, the following message will be
displayed by the Stacker device driver when you start your computer:
NOTE: "In DR DOS, loading Stacker high (or using /EMS)
may slow disk access. Please see the Stacker README
file for help."
This condition can be remedied by using the /ND parameter on the
STACKER.COM device line in Config.sys. Use the /ND parameter if your
hard disk controller is NOT a bus-master controller. (If you are
unsure of whether your disk controller is a bus-master, it probably
isn't.) If you DO use a bus-master disk controller and it does not
support virtual DMA, DO NOT use the /ND switch to increase disk
performance.
If you do not use the /ND parameter and wish to suppress the warning
message, place the /NW (no warning) parameter on the Stacker DEVICE
statement in the CONFIG.SYS file.
DR DOS 5.0.
Under DR DOS 5.0, the SSWAP option does not operate properly with
Stacker versions 1.0-1.11. It is recommended that you upgrade to Stacker
version 2.0 in order to SSWAP the Stacker drives.
___________________________________________________________________________
Copyright 1993, Stac Electronics