BOXD865GLCL Intel, BOXD865GLCL Datasheet - Page 60

• Manufacturer Part Number: BOXD865GLCL
• Manufacturer: Intel

Specifications of BOXD865GLCL

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Intel Desktop Board D865GBF/D865GLC Technical Product Specification
60
program will further reduce the amount of memory available to the operating system. Figure 17
shows a schematic of the system memory map. All installed system memory can be used when
there is no overlap of system addresses. For example, all of the system address space can be
utilized on a system that has 2 GB of installed system memory, AGP aperture set for 256 MB, and
the PCI cards are requesting 200 MB of system address space.
DRAM
Range
GFX aperture,
AGP window,
PCI, and ICH
PCI Memory
Compatibility
(Contains
ranges)
Range
Memory
DOS
Figure 17. Detailed System Memory Address Map
Top of System Address Space
Video Frame
Reserved
FLASH
Buffer
APIC
4 GB
0 MB
DRAM (memory
640 KB
Top of installed
1 MB
Top of usable
visible to the
operating
system)
DRAM
~20 MB
0C0000H
0BFFFFH
0EFFFFH
0DFFFFH
09FFFFH
0FFFFFH
0F0000H
0E0000H
0A0000H
00000H
* Optionally mapped
to the internal AGP
Memory (SMM
Standard PCI/
area (64 KB)
Upper BIOS
Lower BIOS
Add-in Card
Buffer area
16 KB x 4)
16 KB x 8)
ISA Video
DOS area
BIOS and
(640 KB)
Memory)
128 KB *
(128 KB;
(64 KB;
area
OM15972
896 KB
768 KB
960 KB
640 KB
0 KB
1 MB