EMM386.EXE 4.48 Doesn't Enable HIGHSCAN on Some AMI BIOSs (104727)


The information in this article applies to:

  • Microsoft MS-DOS operating system 6.2
  • Microsoft MS-DOS operating system 6.21
  • Microsoft MS-DOS operating system 6.22
  • Microsoft Windows for Workgroups 3.11
This article was previously published under Q104727

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.
Modification Type:MajorLast Reviewed:11/23/1999
Keywords:KB104727
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