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STAC ELECTRONICS
TECHNICAL SUPPORT BULLETIN
NUMBER: 018
SUBJECT: WINDOW3.0
DATE: September 18, 1991
TIME:
SOURCE: Tech Support, Engineering, User's Manual
SUPERCEDES/ TECH003 Dated 4/14/1991
SUPERCEDED BY:
RELEASE STATUS: Public
TITLE:
WINDOWS 3.0 in enhanced mode and STACKER
OVERVIEW:
WINDOWS is a memory-intensive program. It can be run in enhanced mode to
take advantage of extended memory, and such operation is compatible with
STACKER.
ISSUES/COMMENTS:
1) When the XT/8 coprocessor board is present, its address range must be
excluded in the WINDOWS SYSTEM.INI file. Overlooking this step can
lead to corruption of the Windows directory. Omitting the EMMExclude
can also lead to "Insufficient Memory" errors when launching Windows
programs.
Use of the AT/16 coprocessor presents no such problems.
2) Permanent swap files cannot reside on the STACKER volume; (Windows
does not present it as an option).
3) Temporary swap files should also reside on the uncompressed drive.
4) With third party (non-Microsoft) memory managers, certain files
must exist in the identical directory paths on both the compressed
Stacker drive and in the uncompressed boot drive.
386MAX BLUEMAX QEMM386
----------- ------------ ------------
386MAX.SYS BLUEMAX.SYS QEMM386.SYS
386LOAD.SYS 385LOAD.SYS LOADHI.SYS
386MAX.VXD BLUEMAX.VXD WINHIRAM.VXD
RECOMMENDED ACTIONS:
1) If WINDOWS is run in enhanced mode AND the XT/8 coprocessor board is
installed, add an EMMExclude statement to WINDOWS\SYSTEM.INI under the
heading [386ENH] (see User's Manual, "Microsoft Windows 3.0 in 386
Enhanced Mode Users"). This should be done BEFORE WINDOWS is loaded,
and can be accomplished using any text editor. (If the coprocessor is
disabled, SYSTEM.INI may be modified using NOTEPAD.)
2) If a permanent swap file will be part of the configuration, leave
sufficient uncompressed space on the host volume. If there is not
enough uncompressed space and you have Stacker version 2.0 or greater,
use SDEFRAG to physically shrink the STACVOL file.
If you are using version 1.12 or lower,the STACKER volume must be
SREMOVEd, and a smaller one created.
3) Temporary swap files left on the uncompressed drive will not cause
fragmentation in the STACKER volume.
4) If the STACKER volume becomes corrupted or write-protected due to an
interrupted 386-enhanced session:
a) verify that STACKER coprocessor card address has been excluded in
SYSTEM.INI;
b) run SCHECK/F on the STACKER volume;
c) delete the WIN386.SWP (temporary swap) file;
d) run SCHECK/F again;
e) reboot before writing anything to disk.