Problems with MS-DOS 5.0 on Leading Edge Model M and Sperry HT (89722)



The information in this article applies to:

  • Microsoft MS-DOS operating system 5.0
  • Microsoft MS-DOS operating system 5.0a
  • Microsoft MS-DOS operating system 6.0
  • Microsoft MS-DOS operating system 6.2
  • Microsoft MS-DOS operating system 6.21
  • Microsoft MS-DOS operating system 6.22

This article was previously published under Q89722

SYMPTOMS

After upgrading to MS-DOS on a Leading Edge Model M 8088 or a Sperry HT 8088 computer, executing QBASIC or EDIT may produce unusual video display behavior (for example, horizontal scrolling or blinking) or unusual system behavior (for example, lock-ups).

CAUSE

The Leading Edge Model M and Sperry HT are 8088 machines. They originally shipped with a color video controller that does not conform to any standard supported by MS-DOS 5.0 and later (that is, monochrome, CGA, EGA, EGA mono, VGA, or 8514).

The products included here, Leading Edge Model M and Sperry HT, are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Modification Type:MajorLast Reviewed:5/12/2003
Keywords:KB89722