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Q234620: PRB: Visual C++ Debugger Can Fail on Pentium III Computers

Article: Q234620
Product(s): Microsoft C Compiler
Version(s): 6.0
Operating System(s): 
Keyword(s): kbDebug
Last Modified: 04-MAY-2002

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The information in this article applies to:

- Microsoft Visual C++, 32-bit Enterprise Edition, version 6.0 
- Microsoft Visual C++, 32-bit Professional Edition, version 6.0 
- Microsoft Visual C++, 32-bit Learning Edition, version 6.0 
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SYMPTOMS
========

While debugging a DirectX application in the Visual C++ debugger on a Pentium
III computer, you can get the following error:

  Unhandled exception in D3DIM.DLL 0xC000001D: Illegal instruction

If you run the application outside the debugger, it may run without an error.

CAUSE
=====

On the Pentium III, exceptions are unmasked when debugging. This produces an
error "Unhandled Exceptions" or "Illegal Instructions" error in Windows 98.

RESOLUTION
==========

The fix requires an updated version of VMCPD.VXD. You can get this file by
contacting Microsoft Technical Support at:

  http://www.microsoft.com/support/ (http://www.microsoft.com/support/)

Copy the file to the WINDOWS\SYSTEM directory and restart the computer.

The updated version of the file is included in the Windows 98 update available
for free download from the Microsoft internet site.

Additional query words:

======================================================================
Keywords          : kbDebug 
Technology        : kbVCsearch kbAudDeveloper kbVC600 kbVC32bitSearch
Version           : :6.0
Issue type        : kbprb
Solution Type     : kbpending

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