PC Card Driver Updated to Allow Interrupt Sharing

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Article ID: 257458 - View products that this article applies to.
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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.


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.


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.


When the fix is installed via the hotfix installer, it would add the following registry entry. No user invention is needed.
Value: DisableIsaToPciRouting
Data: 0


Article ID: 257458 - Last Review: October 20, 2013 - Revision: 3.2
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Professional Edition
kbnosurvey kbarchive kbhotfixserver kbqfe kbbug kbfix kbqfe kbwin2000sp1fix KB257458

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