CMPXCHG8B CPUs in Non-Intel/AMD x86 Compatibles Not Supported (189988)
The information in this article applies to:
- Microsoft Windows NT Server 4.0 Terminal Server Edition
- Microsoft Windows NT Server 4.0
This article was previously published under Q189988 SYMPTOMS
Computers with x86-based processors that report support for CMPXCHG8B in
the response from the CPUID instruction may cause the following blue-screen
error message during startup:
STOP 0x0000003e
MULTIPROCESSOR_CONFIGURATION_ NOT SUPPORTED
NOTE: This problem can occur on uniprocessor systems and only occurs on non-
Intel and non-AMD x86-based processors.
CAUSE
During the boot process, Windows NT queries the processor for its type and
uses that information to adjust its initialization to take advantage of the
features that the processor should support. Later, it makes calls to the
processor to verify that it does support these specific features. One of
the calls is to note the maker of the processor. If the maker is not Intel
or AMD, the return value causes Windows NT to assume that the features are
not supported by the processor, even through they may be.
RESOLUTIONTo resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the
Microsoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack
STATUSMicrosoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.
| Modification Type: | Major | Last Reviewed: | 6/24/2004 |
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| Keywords: | kbbug kbfix KB189988 |
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