NQ5000P S L9TN Intel, NQ5000P S L9TN Datasheet - Page 278
NQ5000P S L9TN
Manufacturer Part Number
NQ5000P S L9TN
Description
Manufacturer
Intel
Datasheet
1.NQ5000P_S_L9TN.pdf
(530 pages)
Specifications of NQ5000P S L9TN
Mounting
Surface Mount
Lead Free Status / RoHS Status
Not Compliant
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4.2
Table 4-1.
4.2.1
278
Compatibility Area
This is the range from 0 - 1 MB (0 0000h to F FFFFh). Requests to the compatibility
area are directed to main memory, the Compatibility Bus (ESI), or the VGA device. Any
physical DRAM addresses that would be addressed by requests in this region that are
mapped to the Compatibility Bus (ESI) and are not recovered.
DRAM that has a physical address between 0-1 MB must not be recovered or relocated
or reflected. This range must always be available to the OS as DRAM, even if at times
addresses in this range are sent to the compatibility bus or VGA or other non-DRAM
areas.
Addresses below 1 M that are mapped to memory are accessible by the processors and
by any I/O bus. The address range below 1 M is divided into five address regions. These
regions are:
There are fifteen memory segments in the compatibility area. Thirteen of the memory
ranges can be enabled or disabled independently for both read and write cycles.
Memory Segments and Their Attributes
MS-DOS Area (0 0000h–9 FFFFh)
The MS-DOS area is 640 KB in size and is mapped to main memory controlled by the
MCH.
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 eight sections) - Expansion Card BIOS,
• 896 - 960 KB in 16-KB sections (total of four sections) - Lower Extended System
• 960 KB–1 MB memory (BIOS Area) - Upper System BIOS, Segment F.
Segments C and D.
BIOS, Segment E.
Memory Segments
Fixed: mapped to main DRAM
Mapped to ESI, x16 graphics port
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Intel® 5000P/5000V/5000Z Chipset Memory Controller Hub (MCH) Datasheet
Attributes
0 to 640 KB – DOS Region
Video Buffer (physical DRAM
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
Comments
System Address Map
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