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X9SCM/X9SCM-F/X9SCL/X9SCL-F User's Manual
For Microsoft Windows users: Microsoft implemented a design change in the Win-
dows XP with Service Pack 2 (SP2) and Windows Vista. This change is specic
to the behavior of Physical Address Extension (PAE) mode which improves driver
compatibility. For more information, please read the following article at Microsoft’s
Knowledge Base website at: http://support.microsoft.com/kb/888137.
Possible System Memory Allocation & Availability
System Device Size Physical Memory
Remaining (-Available)
(4 GB Total System
Memory)
Firmware Hub ash memory (System BIOS) 1 MB 3.99
Local APIC 4 KB 3.99
Area Reserved for the chipset 2 MB 3.99
I/O APIC (4 Kbytes) 4 KB 3.99
PCI Enumeration Area 1 256 MB 3.76
PCI Express (256 MB) 256 MB 3.51
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