301467-005 Datasheet, PDF (207/426 Pages) Intel Corporation – Express Chipset

System Address Map
R
Figure 11-1. System Address Ranges
4 GB
PCI Memory
Address Range
(Subtractively
decoded to DMI)
Device 0
Bars
(EPBAR,
MCHBAR,
PCIEXBAR,
DMIBAR)
Device 1
Bars
(MBASE1/
MLIMIT1,
PMBASE1/
PMLIMIT1)
Device 2¹
Bars
(MMADR,
GMADR,
GTTADR)
11.1
TOLUD
Main Memory
Address Range
Device 0
GGC
(Graphics
Stolen
Memory)
Independently Programmable
Non-Overlapping Windows
1 MB
Legacy Address
Range
0
NOTES:
1. Device 2 is not on the 82915P/82915PL MCH.
2. Device 1 is not on the 82915GV/82910GL/82915GL GMCH.
Legacy Address Range
This area is divided into the following address regions:
• 0 – 640 KB: DOS Area
• 640 – 768 KB: Legacy Video Buffer Area
• 768 – 896 KB in 16-KB sections (total of 8 sections): Expansion Area
• 896 – 960 KB in 16-KB sections (total of 4 sections): Extended System BIOS Area
• 960-KB – 1-MB Memory: System BIOS Area
Datasheet
207