PRB: Video Card Causes GP Faults or Display Problems

 Last reviewed: August 6, 1997
Article ID: Q95232
2.5x 2.6x 3.00 5.00 WINDOWS kbdisplay kbhw kb3rdparty kbprb

The information in this article applies to:

  • Microsoft Visual FoxPro for Windows, versions 3.0, 5.0
  • Microsoft FoxPro for Windows, versions 2.5x, 2.6x

SYMPTOMS

A number of video cards do not work properly with FoxPro for Windows. They may cause general protection (GP) faults or display problems.

CAUSE

FoxPro for Windows makes intensive use of screen I/O, which does not work well with some video cards. The following video cards have been identified as conflicting with FoxPro for Windows:

  • AST Power Premium 486 with VGA motherboard
  • ATI Ultra Graphics Pro (local bus)
  • COMPAQ QVision
  • Dell 486/20 with VGA on motherboard
  • Diamond Stealth64 video driver
  • Genoa 7900 MM card
  • Hercules Dynamite Power VESA with ET 4000 chipset
  • MACH32
  • MATROX MGA video driver using 1024 x 768 resolution
  • NEC 2A
  • Oak VGA card with 640 x 480 x 256 colors for 286 or higher processor
  • Orchid Fahrenheit 1280 card using Microsoft Windows version 3.1
  • Speed Star 24x
  • TIGA 1024 x 768 x 256 small fonts
  • Trident 8900C
  • Number 9 Reality 332 video card with Hawkeye driver

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

RESOLUTION

To test the compatibility of the video card being used and FoxPro for Windows, use one of the standard Windows drivers that ships with Windows, for example, the VGA or Super VGA driver. If the problem no longer occurs when you are using the standard Windows video driver, contact the vendor for an updated version of the video driver or obtain the proper driver from the Windows Driver Library (WDL). (See below for information on obtaining a WDL driver.)

MORE INFORMATION

The WDL drivers are available at no charge from the Microsoft Software Library on the Microsoft Download Service (MSDL), and the Internet. However, note that standard connect-time fees and long-distance telephone charges, if any, will still apply during downloading. When you connect to any of these services, please read the WDL.TXT file for downloading instructions and a complete list of devices supported in the WDL.

The phone number for the MSDL is (206) 936-MSDL (6735). There is no connect-time charge for using this service.

If you do not have a modem, you can obtain an individual WDL driver on disk by calling Microsoft Technical Support at (206) 637-7098.

Other Bulletin Board Service (BBS) Numbers

The BBS number for Trident is (415) 691-1016.

Additional reference words: 5.00 VFoxWin 3.00 FoxWin 2.50 2.50a 2.50b 2.60
2.60a XGA GPF incompatible
KBCategory: kbdisplay kbhw kb3rdparty kbprb
KBSubcategory: FxotherDisplay
Keywords : FxotherDisplay kb3rdparty kbdisplay kbhw kbprb
Version : 2.5x 2.6x 3.00 5.00
Platform : 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: August 6, 1997
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.