CPU Write-Back Cache Disabled on Certain Cyrix Processors

• Microsoft Windows NT Server version 4.0
• Microsoft Windows NT Workstation version 4.0

SUMMARY

When initializing certain Cyrix processors, Windows NT 4.0 will disable the CPU write-back cache to prevent serious system problems.

MORE INFORMATION

Certain Cyrix processors are known to cause serious problems with Windows NT 4.0.



If Windows NT detects certain Cyrix processor steppings, it will disable the L1 w/b (write-back) cache.

This will reduce performance but will guard against systemwide problems caused by the write-back cache, thus preventing data-loss.

The Cyrix products discussed here are manufactured by Cyrix Corporation, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional query words: prodnt cyrix write-back processor

Keywords : kb3rdparty kbhw NTSrvWkst
Version : 4.0
Platform : winnt
Issue type :