Intel Xeon Wolfdale E3210 P4X-UPE3210-316-6M1333 データシート

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P4X-UPE3210-316-6M1333
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Datasheet
39
System Address Map
3.1.2
Expansion Area (C_0000h-D_FFFFh)
This 128 KB ISA Expansion region (000C_0000h – 000D_FFFFh) is divided into eight 
16 KB segments. Each segment can be assigned one of four Read/Write states: read-
only, write-only, read/write, or disabled. Typically, these blocks are mapped through 
MCH and are subtractive decoded to ISA space. Memory that is disabled is not 
remapped. 
Non-snooped accesses from PCI Express or DMI to this region are always sent to 
DRAM. 
3.1.3
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 2.
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
Table 3.
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