EMM386.EXE allows MS-DOS to simulate expanded memory on computers with a
386 or higher microprocessor. It also allows terminate-and-stay- resident
(TSR) programs and device drivers to be loaded into the upper memory area
(UMA) to free conventional memory for MS-DOS-based applications. You may
experience problems using EMM386.EXE on certain laptop computers.
Toshiba has confirmed that EMM386.EXE, included with the Microsoft
MS-DOS 6 and 6.2 Retail Upgrade Package, is not compatible with the
Resume mode on Toshiba laptops.
EMM386.EXE also disables the PopUp window on Toshiba laptops. If the
EMM386.EXE driver is loaded in the CONFIG.SYS file, the FN-PopUp key
combination does not cause the PopUp window to be displayed;
therefore, you may be unable to view the current battery charge or
toggle the various battery options.
For further information concerning installing MS-DOS 6.0 on Toshiba
computers, call Toshiba Technical Support at (800) 456-8649.
After running MEMMAKER.EXE or manually adding EMM386.EXE to the
CONFIG.SYS file on a CompuAdd 325TFX or 425TFX running LAP.SYS, the
computer may stop responding (hang) on startup.
This problem occurs because the LAP.SYS driver, which loads in the
CONFIG.SYS file, uses the upper memory address range C000-CFFF.
To correct this problem, you must exclude the C000-CFFF range by
adding the parameter X=C000-CFFF to the EMM386.EXE line in the
CONFIG.SYS file. For example:
LAP.SYS is CompuAdd's power management system program. For more
information, call CompuAdd Technical Support at (800) 999-9901.