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Microsoft KB Archive/104727

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Knowledge Base

EMM386.EXE 4.48 Doesn't Enable HIGHSCAN on Some AMI BIOSs

Article ID: 104727

Article Last Modified on 11/23/1999


  • Microsoft MS-DOS 6.2 Standard Edition
  • Microsoft MS-DOS 6.21 Standard Edition
  • Microsoft MS-DOS 6.22 Standard Edition
  • Microsoft Windows for Workgroups 3.11

This article was previously published under Q104727


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


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


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

Keywords: KB104727