PCMCIA Device Requiring an Upper Memory Area May Not Work (129327)
The information in this article applies to:
- Microsoft Windows 95
- Microsoft Windows 98
This article was previously published under Q129327 If this article does not describe your hardware-related issue, please see the following Microsoft Web site to view more articles about hardware: SYMPTOMS
The PCMCIA card device in your laptop computer may not initialize
properly.
CAUSE
Some PCMCIA devices require an upper memory area mapped to the PCMCIA
socket for data buffering. If this memory region is in use by the
computer's BIOS or a built-in device, the PCMCIA device does not respond
when the Windows protected-mode socket driver tries to allocate the
memory.
For example, if the computer's BIOS allocates memory for ROM shadowing in
the upper memory area (UMA) and the socket driver tries to reallocate this
memory, the PCMCIA device fails to initialize. A sample failure code for a
PCMCIA network card experiencing this problem is "Problem 10."
RESOLUTION
To work around this problem, reserve the region of memory that is already
in use. To do so, follow these steps:
- Click the Start button, point to Settings, then click Control Panel.
- Double-click the System icon.
- Click the Device Manager tab, then double-click Computer.
- Click the Reserve Resources tab, click the Memory option button, then
click the Add button.
- In the Start Value and End Value boxes, enter values for the start and
end of the memory range you want to reserve.
- Click OK.
After you restart your computer, Configuration Manager avoids using the
reserved memory range when it allocates PCMCIA resources.
| Modification Type: | Major | Last Reviewed: | 8/8/2006 |
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| Keywords: | kbenv kbHardware kbprb KB129327 |
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