Dual-Monitor Requires 8-Bit Data Paths for Both Monitors

 Last reviewed: July 17, 1997
Article ID: Q51870
2.20 3.00 3.11 3.14 4.0x 4.10 | 2.20 3.00 3.1x 3.50 | 3.x 4.0x 4.10 4.25 
MS-DOS                        | OS/2                | WINDOWS
kbtool

The information in this article applies to:

  • Microsoft CodeView for MS-DOS, versions 2.2, 3.0, 3.11, 3.14, 4.0, 4.01, 4.05, and 4.1
  • Microsoft CodeView for OS/2, versions 2.2, 3.0, 3.11, 3.12, and 3.5
  • Microsoft CodeView for Windows, versions 3.0, 3.05, 3.06, 3.07, 4.0, 4.01, and 4.1
  • Microsoft CodeView for Win32s, version 4.25

SUMMARY

When you configure a system for dual-monitor debugging, verify that both the monochrome monitor and the color monitor use an 8-bit data path. Any dual-monitor write scheme requires a common data path to each display card (either both 8-bit or both 16-bit). Monochrome adapters available today use an 8-bit path exclusively.

Many display cards that support 16-bit mode automatically sense that they are addressed in a dual-monitor mode. However, some cards, such as the ATI VGA Wonder card, do not sense this situation. You must manually configure these cards to use an 8-bit data path.

MORE INFORMATION

If you use dual monitors and experience strange behavior, such as random or blinking characters on the monochrome screen, verify that your 16-bit color video card is running in 8-bit mode.

The most common use for a dual-monitor setup is to debug a graphics application with CodeView.

Additional reference words: kbinf 2.20 2.30 3.00 3.50 4.00 4.10
KBCategory: kbtool
KBSubcategory: CvwIss
Keywords : CvwIss kb16bitonly kbtool
Version : 2.20 3.00 3.11 3.14 4.0x 4.10 |
Platform : MS-DOS OS/2 WINDOWS

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: July 17, 1997
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.