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Q104727: EMM386.EXE 4.48 Doesn’t Enable HIGHSCAN on Some AMI BIOSs

Article: Q104727
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.2,6.21,6.22; WINDOWS:3.11
Operating System(s): 
Keyword(s): 
Last Modified: 23-NOV-1999

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The information in this article applies to:

- Microsoft MS-DOS operating system versions 6.2, 6.21, 6.22 
- Microsoft Windows for Workgroups version 3.11 
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SYMPTOMS
========


EMM386.EXE version 4.48 does not enable HIGHSCAN for some AMI BIOS.

CAUSE
=====

EMM386.EXE checks the AMI BIOS date and does not enable HIGHSCAN if the BIOS
date is one of the following:

  04/25/91
  05/05/91
  07/07/91
  06/01/92

These AMI BIOS chip sets use the F000h-F7FFh upper memory area (UMA) range and
are therefore incompatible with HIGHSCAN.

Additional query words: 6.22 6.20 mem maker memmaker 4-25-91 7-07-71 5- 05-91 date dates high scan f000-f7ff

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Keywords          :  
Technology        : kbAudDeveloper kbWFWSearch kbWFW311 kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620
Version           : MS-DOS:6.2,6.21,6.22; WINDOWS:3.11

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