ADWPCIXRSKU20 Intel, ADWPCIXRSKU20 Datasheet - Page 58

• Manufacturer Part Number: ADWPCIXRSKU20
• Manufacturer: Intel

Specifications of ADWPCIXRSKU20

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Functional Architecture
3.5.1.1.1
The DOS region is 512 KB in the address range 0 to 07FFFFh. This region is fixed and all
accesses go to main memory.
3.5.1.1.2
The ISA Window Memory is 128 KB between the address of 080000h to 09FFFFh. This area
can be mapped to the PCI bus or main memory.
3.5.1.1.3
The 128 KB Graphics Adapter Memory region at 0A0000h to 0BFFFFh is normally mapped to
the VGA controller on the PCI bus. This region is also the default region for SMM space.
3.5.1.1.4
The 128 KB region between addresses 0C0000h to 0DFFFFh is divided into eight segments of
16 KB segments mapped to ISA memory space, each with programmable attributes, for
expansion cards buffers. Historically, the 32 KB region from 0C0000h to 0C7FFFh has
contained the video BIOS location on the video card
3.5.1.1.5
This 64 KB region from 0E0000h to 0EFFFFh is divided into four blocks of 16 KB each, and may
be mapped with programmable attributes to map to either main memory or to the PCI bus.
Typically this area is used for RAM or ROM. This region can also be used extended SMM
space.
3.5.1.1.6
The 64 KB region from 0F0000h to 0FFFFFh is treated as a single block. By default, this area is
normally read/write disabled with accesses forwarded to the PCI bus. Through manipulation of
read/write attributes, this region can be shadowed into main memory.
3.5.1.2
Extended memory is defined as all address space greater than 1MB. The extended memory
region covers 8GB maximum of address space from addresses 0100000h to FFFFFFFh, as
shown in the following figure. PCI memory space can be remapped to top of memory (TOM).
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DOS Area
ISA Window Memory
Video or SMM Memory
Add-in Card BIOS and Buffer Area
Extended System BIOS
System BIOS
Extended Memory
Intel order number C91056-002
Intel® Server Board SE7320VP2
Revision 2.1