BOXD945GCZL Intel (CPU), BOXD945GCZL Datasheet - Page 46

• Manufacturer Part Number: BOXD945GCZL
• Manufacturer: Intel (CPU)

Specifications of BOXD945GCZL

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Intel Desktop Board D945GCZ Technical Product Specification
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The amount of installed memory that can be used will vary based on add-in cards and BIOS
settings. 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.
DRAM
Range
(approximately 750 MB)
contains PCI, chipsets,
(DMI), and ICH ranges
Direct Media Interface
PCI Memory Range -
MCH base address registers, internal graphics ranges, PCI Express ports (up to 512 MB)
Memory-mapped I/O that is dynamically allocated for PCI Conventional and PCI Express
add-in cards
Compatibility
Memory
DOS
Figure 17. Detailed System Memory Address Map
Top of System Address Space
Reserved
FLASH
APIC
4 GB
Top of usable
DRAM (memory
visible to the
operating
system)
0 MB
640 KB
1 MB
~20 MB
0DFFFFH
0C0000H
0BFFFFH
0FFFFFH
0EFFFFH
09FFFFH
00000H
0F0000H
0E0000H
0A0000H
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;
(64 KB;
128 KB
area
896 KB
768 KB
OM17140
960 KB
640 KB
0 KB
1 MB