Microsoft KB Archive/119829

= Kernel_Stack_Inpage_Error with DPT PM2012B/9X =

Article ID: 119829

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Workstation 3.1
 * Microsoft Windows NT Advanced Server 3.1

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This article was previously published under Q119829



SYMPTOMS
When you add a 4-megabyte (MB) cache to a DPT PM2012B/9X adapter card, a KERNEL_STACK_INPAGE_ERROR may occur. This error does not occur when the card is running at its default of 512 kilobytes (K).

The STOP message is 0x77 (0x00000103,0xC0000185, 0x0,0x099b0000) which indicates either a bad block in paging file or disk controller error.



RESOLUTION
To avoid this error, use the EISA Config utility to set the cache to WRITE- THROUGH instead of WRITE-BACK.

NOTE: Make sure the DPT firmware is upgraded to version 3G and the SmartROM to version 1K.

Windows NT supports caching disk controllers under the following conditions:

 Controller has a driver that specifically supports caching (for example, DPT). Write-through is active (that is, write back caching is disabled) either by setting it manually or by default when the computer starts. The entire cache option is off, either by setting it manually or by default when the computer starts.



MORE INFORMATION
When a processor needs to write to memory, the hardware must determine whether the memory location is in the cache of some other processor. If so, the other caches must be invalidated or given the new data.

At this point the cache controller writing the data may update main memory so that other caches will get the updated data from memory if they need the word in the future; this is called write-through caching. Alternatively, the cache controller can wait to update main memory until it needs to reuse the cache location. This is called write-back.

The third-party products discussed here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional query words: prodnt 3.10 blue trap 3rdparty

Keywords: KB119829

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