Microsoft KB Archive/76850

= README.TXT: Using HIMEM.SYS =

PSS ID Number: 76850

Article Last Modified on 9/26/1999

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The information in this article applies to:


 * Microsoft Windows with Multimedia Extensions 1.0

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This article was previously published under Q76850



1.00

WINDOWS

kbref



SUMMARY
The following information is contained in the Windows with Multimedia Extensions version 1.0 README.TXT file. The Setup program copies this file to the Windows with Multimedia Windows directory.

This information does not apply to later versions of Windows.



MORE INFORMATION
Using HIMEM.SYS ---

HIMEM.SYS is a driver required by Windows 3.0 for using extended memory. It must be included in your CONFIG.SYS file. The method HIMEM uses to access extended memory depends on your hardware.

When you boot your computer, HIMEM is loaded from your CONFIG.SYS file. After it is loaded, you will see a message like the following telling you the method HIMEM will use to access extended memory on your computer.

Installed A20 handler number X.

where X is 1 through 8 which corresponds to one of the following methods:

Number  Name               Computer type --       1        at               ; IBM AT or 100% compatible. 2       ps2              ; IBM PS/2 3       ptlcascade       ; Phoenix Cascade BIOS 4       hpvectra         ; HP Vectra (A & A+) 5       att6300plus      ; AT&T 6300 Plus 6       acer1100         ; Acer 1100 7       toshiba          ; Toshiba 1600 & 1200XE 8       wyse             ; Wyse 12.5 Mhz 286

If HIMEM does not work properly, you can try a different method. Specify the switch for your computer type on the device=HIMEM.SYS line in your CONFIG.SYS file. Computer type corresponds to either the number or the name of your computer from the table.

For example the following lines are equivalent:

device=c:\himem.sys /M:ps2 device=c:\himem.sys /M:2

This entry forces HIMEM to use the IBM PS/2 A20 method for accessing extended memory.

Additional query words: MMWIN kbmm readme

Keywords: KB76850

Technology: kbWinMultiX100 kbWinMultiXSearch

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