Microsoft KB Archive/77210

= Loading MS-DOS High on Zenith SuperSport 286 with 1 MB RAM =

Article ID: 77210

Article Last Modified on 5/12/2003

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APPLIES TO


 * Microsoft MS-DOS 5.0 Standard Edition
 * Microsoft MS-DOS 5.0a
 * Microsoft MS-DOS 6.0 Standard Edition
 * Microsoft MS-DOS 6.2 Standard Edition
 * Microsoft MS-DOS 6.21 Standard Edition
 * Microsoft MS-DOS 6.22 Standard Edition

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This article was previously published under Q77210



SYMPTOMS
If you have a Zenith SuperSport 80286 computer with 1 MB of memory, you may not be able to load MS-DOS 5.0 or later into the high memory area (HMA).



CAUSE
This is not a limitation of MS-DOS 5.0 or later, but an incompatibility with the hardware design of the Zenith SuperSport 80286.



MORE INFORMATION
The Zenith SuperSport 80286 with 1 MB of memory is configured for 640K base, 128K for video/ROM BIOS, and 256K reserved for expanded memory. With this hardware design, contiguous extended memory is not present for MS-DOS to load into the HMA.

Expanded memory can be accessed through the expanded memory manager provided by Zenith Data Systems. This memory manager would be loaded in the CONFIG.SYS file as follows:   device=[drive:][path]emm.sys Without the use of this driver, expanded memory services are unavailable, and 256K of memory will not be used. This memory cannot be reconfigured as extended memory.

Additional query words: 6.22 5.00 5.00a 6.00 6.20

Keywords: KB77210

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