Intel® Server Board SE7520JR2

Functional Architecture

3.5.1.2Extended Memory

Extended memory is defined as all address space greater than 1MB. Extended Memory region covers 8GB maximum of address space from addresses 0100000h to FFFFFFFh, as shown in the following figure. PCI memory space can be remapped to top of memory (TOM).

Extended

lntel E7520 chipset region

PCI Memory Space

Main Memory Address Region

High BIOS Area

APIC Space

512KB Extended System Management RAM

Optional Fixed Memory Hole

64GB

Top Of Memory (TOM)

FFFFFFFFh

FFE00000h

FEC0FFFFh

FEC00000h

Top of Low Memory (TOLM) Depends on installed DIMMs

16MB

15MB

100000h

Figure 16. Extended Memory Map

Revision 1.0

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