Cannot Use /U Switch with DOS=LOW and MOUSE.COM Version 8.0 (75081)
The information in this article applies to:
- Microsoft MS-DOS operating system 5.0
- Microsoft MS-DOS operating system 5.0a
- Microsoft MS-DOS operating system 6.0
- Microsoft MS-DOS operating system 6.2
- Microsoft MS-DOS operating system 6.21
- Microsoft MS-DOS operating system 6.22
This article was previously published under Q75081 SUMMARY
Microsoft Mouse drivers versions 8.0 and later allow for the use of an
XMS driver to load themselves high. The /U switch allows you to load
the mouse driver high, but does not work if MS-DOS is loaded into
conventional memory. MS-DOS loads into conventional memory with the
line DOS=LOW in the CONFIG.SYS file, or the lack of a DOS= line in the
CONFIG.SYS file.
To work around this feature, type the following command:
Make sure that SETVER.EXE is being loaded in the CONFIG.SYS file, and
then restart the machine. To verify that the mouse driver is loading
into XMS, type MEM /C. The size of the
driver in conventional memory should be approximately 3.5K.
NOTE: Microsoft does not recommend using the /U switch when DOS=HIGH
with Microsoft Mouse Driver, version 8.0. For more information, query
on the following words:
conflicts and mouse.com and DOS=HIGH
MORE INFORMATION
MOUSE.COM uses an XMS Sub-Allocate call to load itself high. This call
requires MS-DOS to be loaded into the HMA before the mouse can load high.
MOUSE.COM has a version check built into it that allows it to load
into the HMA in MS-DOS versions earlier than 5.0. If the MS-DOS
version is earlier than 5.0, MOUSE.COM does not check to see if MS-DOS
has been loaded high first. Loading SETVER.EXE allows MOUSE.COM to
make the appropriate XMS initialization calls to allow for proper HMA
loading.
| Modification Type: | Major | Last Reviewed: | 5/12/2003 |
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| Keywords: | KB75081 |
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