Issues in the installation of multifunction PCMCIA cards
- Issue 1: The last child function on the card is not installed. For example, if you install a dual I/O card, you unexpectedly find only one COM port installed instead of two ports when you look in the Device Manager.
- Issue 2: All child functions have the same device description.
- Issue 3: Some of the child functions do not start (error code 10).
Hotfix informationA supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
File informationThe English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name --------------------------------------------------- 2002-11-03 15:27 5.1.2600.34 113,000 Pcmcia.sys
For more information, visit the following Microsoft Developer Network (MSDN) Web site:
Issue 1Consider the following scenario. The PnP Manager sends an IRP_MN_QUERY_DEVICE_RELATIONS request to the multifunction driver to obtain the list of physical device objects (PDOs) for the child functions of a multifunction PCMCIA card. In this scenario, no PDO is created for the last child function. Therefore, the last child function is not added to the list of children of the parent.
Issue 2The Device ID generated by PCMCIA for a child function has the following format:
Issue 3When you install a multifunction PCMCIA card, some of the child functions may not be started by their function drivers as expected (error code 10). This behavior is caused by a problem in the Pcmcia.sys file that occurs when it fills in the resource requirements for the PCMCIA card that are obtained from the tuples information. The DevicePrivate resource descriptors are not correctly created for the child functions of multifunction PCMCIA cards. The DevicePrivate resource descriptor of every function provides information, such as the base address of the configuration registers and the configuration data to be written to the Configuration Option Register for that function. Therefore, some of the child functions are not correctly configured and do not start.
Article ID: 318213 - Last Review: 01/12/2015 19:49:24 - Revision: 4.0
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