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

ID: Q51870


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, 4.1
  • Microsoft CodeView for OS/2, versions 2.2, 3.0, 3.11, 3.12, 3.5
  • Microsoft CodeView for Windows, versions 3.0, 3.05, 3.06, 3.07, 4.0, 4.01, 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 query words: kbinf 2.20 2.30 3.00 3.50 4.00 4.10 no32bit

Keywords : kb16bitonly kbCodeView kbDebug kbVC
Version : :2.2,3.0,3.05,3.06,3.07,3.11,3.12,3.14,3.5,4.0,4.01,4.05,4.1,4.25
Platform : MS-DOS OS/2 WINDOWS
Issue type :


Last Reviewed: October 21, 1999
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