Screen Garbage on Tandon Laptop 386, VGA, QBasic Mode 13 (70916)



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 Q70916

SYMPTOMS

When you use the MS-DOS version 5.0 or later QBasic SCREEN command to set the screen to mode 13 (320 x 200, 256-color resolution) on a Tandon Laptop 386 with a VGA card, meaningless characters may appear on the screen. When running in this mode, the VGA card ignores requests to set colors; therefore, anything displayed on the screen appears in unpredictable colors.

CAUSE

This behavior is caused by a problem in the VGA card itself, not the machine, monitor, or Qbasic.

The products included here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Modification Type: Major Last Reviewed: 5/12/2003
Keywords: KB70916