RG82865GV S L77X Intel, RG82865GV S L77X Datasheet - Page 141
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RG82865GV S L77X
Manufacturer Part Number
RG82865GV S L77X
Description
Manufacturer
Intel
Datasheet
1.RG82865GV_S_L77X.pdf
(250 pages)
Specifications of RG82865GV S L77X
Lead Free Status / Rohs Status
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4.2
Intel
®
Table 15. Memory Segments and Their Attributes
82865G/82865GV GMCH Datasheet
Compatibility Area
This area is divided into the following address regions:
There are fifteen memory segments in the compatibility area (see
memory ranges can be enabled or disabled independently for both read and write cycles.
000000h–09FFFFh
0A0000h–0BFFFFh
0C0000h–0C3FFFh
0C4000h–0C7FFFh
0C8000h–0CBFFFh
0CC000h–0CFFFFh
0D0000h–0D3FFFh
0D4000h–0D7FFFh
0D8000h–0DBFFFh
0DC000h–0DFFFFh
0E0000h–0E3FFFh
0E4000h–0E7FFFh
0E8000h–0EBFFFh
0EC000h–0EFFFFh
0F0000h–0FFFFFh
•
•
•
•
•
0–640 KB MS-DOS Area.
640–768 KB 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 (BIOS Area) – System BIOS Area.
Memory Segments
Fixed: always mapped to main
SDRAM
Mapped to hub interface, AGP, or
IGD: configurable as SMM space
WE RE
WE RE
WE RE
WE RE
WE RE
WE RE
WE RE
WE RE
WE RE
WE RE
WE RE
WE RE
WE RE
Attributes
0 to 640 KB – DOS Region
Video Buffer (physical SDRAM
configurable as SMM space)
Add-on BIOS
Add-on BIOS
Add-on BIOS
Add-on BIOS
Add-on BIOS
Add-on BIOS
Add-on BIOS
Add-on BIOS
BIOS Extension
BIOS Extension
BIOS Extension
BIOS Extension
BIOS Area
Table
15). Thirteen of the
System Address Map
Comments
141
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