Microsoft KB Archive/257458

= PC Card Driver Updated to Allow Interrupt Sharing =

Article ID: 257458

Article Last Modified on 10/30/2006

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q257458



SYMPTOMS
16-bit PC CARD (PCMCIA) PCI devices that rely on interrupt sharing, such as SCM Microsystems PC Card readers, may not work on Windows 2000.



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The PC Card driver has been modified to allow 16-bit PC Cards to use shared PCI interrupts.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

This problem was first corrected in Windows 2000 Service Pack 1.



MORE INFORMATION
When the fix is installed via the hotfix installer, it would add the following registry entry. No user invention is needed.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Pcmcia\Parameters

Value: DisableIsaToPciRouting

Type: REG_DWORD

Data: 0

Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe kbwin2000sp1fix KB257458

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