Microsoft KB Archive/51870

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

Article ID: 51870

Article Last Modified on 10/23/2003

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APPLIES TO


 * Microsoft CodeView 4.1
 * Microsoft CodeView 3.0
 * Microsoft CodeView 3.0
 * Microsoft CodeView 3.0
 * Microsoft CodeView 4.0
 * Microsoft CodeView 4.01
 * Microsoft CodeView 4.01
 * Microsoft CodeView 4.1
 * Microsoft CodeView 3.0
 * Microsoft CodeView 3.05
 * Microsoft CodeView 3.06
 * Microsoft CodeView 3.07
 * Microsoft CodeView 4.0
 * Microsoft CodeView 4.01
 * Microsoft CodeView 4.1

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This article was previously published under Q51870



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: kbbug kb16bitonly kbdebug KB51870

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