CardBus Cards Not Enumerated on Some PC Card Controllers (182591)


The information in this article applies to:

  • Microsoft Windows 95 OEM Service Release 2.1
  • Microsoft Windows 95 OEM Service Release 2.5
This article was previously published under Q182591

SYMPTOMS

When you insert a CardBus PC Card in a computer running Microsoft Windows 95 OEM Service Release 2 (OSR2), the PC Card may not function properly.

CAUSE

This problem can occur when the CardBus PC Card is not enumerated properly. This issue is known to occur on computers that use the following PC Card controller chip sets:
  • Texas Instruments PCI1220
  • Texas Instruments PCI1221
  • Texas Instruments PCI1250
  • Texas Instruments PCI1250A
CLKRUN is a power-saving feature which turns off the clock signal to PC Cards when they are not in use. When this feature is implemented by the controllers listed above, these controllers do not automatically provide the number of clock cycles most PC Cards need in order to initialize.

RESOLUTION

STATUS

This problem no longer occurs in Windows 98. To resolve this problem, install the current version of Windows. For information about the current version of Windows, visit http://www.microsoft.com/windows.

MORE INFORMATION

You can use Device Manager to determine the chip set of your PC Card controller. To do this, follow these steps:
  1. Click Start, point to Settings, click Control Panel, and then double- click System.
  2. Click the Device Manager tab, and then double-click PCMCIA Socket branch to view the list of devices.
Modification Type:MinorLast Reviewed:9/22/2005
Keywords:kbHotfixServer kbQFE kbfix kbHardware kbprb KB182591
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