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82G35 Datasheet(PDF) 49 Page - Intel Corporation

Part # 82G35
Description  Express Chipset
PDF  351 Pages
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

82G35 Datasheet(HTML) 49 Page - Intel Corporation

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System Address Map
Datasheet
49
Table 3-1. Expansion Area Memory Segments
Memory Segments
Attributes
Comments
0C0000h - 0C3FFFh
WE RE
Add-on BIOS
0C4000h - 0C7FFFh
WE RE
Add-on BIOS
0C8000h - 0CBFFFh
WE RE
Add-on BIOS
0CC000h - 0CFFFFh
WE RE
Add-on BIOS
0D0000h - 0D3FFFh
WE RE
Add-on BIOS
0D4000h - 0D7FFFh
WE RE
Add-on BIOS
0D8000h - 0DBFFFh
WE RE
Add-on BIOS
0DC000h - 0DFFFFh
WE RE
Add-on BIOS
3.1.4
Extended System BIOS Area (E_0000h-E_FFFFh)
This 64 KB area (000E_0000h – 000E_FFFFh) is divided into four 16 KB segments.
Each segment can be assigned independent read and write attributes so it can be
mapped either to main DRAM or to DMI Interface. Typically, this area is used for RAM
or ROM. Memory segments that are disabled are not remapped elsewhere.
Non-snooped accesses from PCI Express or DMI to this region are always sent to
DRAM.
Table 3-2. Extended System BIOS Area Memory Segments
Memory Segments
Attributes
Comments
0E0000h - 0E3FFFh
WE RE
BIOS Extension
0E4000h - 0E7FFFh
WE RE
BIOS Extension
0E8000h - 0EBFFFh
WE RE
BIOS Extension
0EC000h - 0EFFFFh
WE RE
BIOS Extension
3.1.5
System BIOS Area (F_0000h – F_FFFFh)
This area is a single 64 KB segment (000F_0000h – 000F_FFFFh). This segment can
be assigned read and write attributes. It is by default (after reset) Read/Write
disabled and cycles are forwarded to DMI Interface. By manipulating the Read/Write
attributes, the GMCH can “shadow” BIOS into the main DRAM. When disabled, this
segment is not remapped.
Non-snooped accesses from PCI Express or DMI to this region are always sent to
DRAM.
Table 3-3. System BIOS Area Memory Segments
Memory Segments
Attributes
Comments
0F0000h – 0FFFFFh
WE RE
BIOS Area



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