Figure 14. Intel® Xeon Processor Memory Address Space - Intel SE7520AF2 Technical Product Specification

Intel® Server Board SE7520AF2 TPS
Upper Memory
Ranges
Lo PCI Memory
Space Range
Main Memory
Address Range
DOS Legacy
Address Range
Figure 15. Intel® Xeon Processor Memory Address Space
3.5.1.1 DOS Compatibility Region
The first region of memory below 1 MB was defined for early PCs, and must be maintained for
compatibility. The region is divided into subregions as shown in the following figure.
Revision 1.2
Hi PCI Memory
Address Range
Additional Main
Memory Address
Range
Top of Low Memory (TOLM)
TSEG SMRAM
Optional ISA Hole
Intel order number C77866-003
64GB
4GB
16MB
15MB
1MB
640KB
512KB
0
Functional Architecture
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