Intel AUGSBURG S775 I915G MATX 10PK KD915GAGLKPAK10 ユーザーズマニュアル

The amount of installed memory that can be used will vary based on add-in cards and BIOS 
settings.  Figure 16 shows a schematic of the system memory map.  All installed system memory 
can be used when there is no overlap of system addresses.   

Upper BIOS 

area (64 KB)

Lower BIOS 

area

(64 KB; 

16 KB x 4)

Add-in Card 

BIOS and 

Buffer area 

(128 KB; 

16 KB x 8)

Standard PCI/

ISA Video 

Memory (SMM 

Memory) 

128 KB

DOS area

(640  KB)

1 MB

960 KB

896 KB

768 KB

640 KB

0 KB

0FFFFFH

0F0000H

0EFFFFH

0E0000H

0DFFFFH

0C0000H
0BFFFFH

0A0000H

09FFFFH

00000H

FLASH

APIC

Reserved

0 MB

640 KB

1 MB

Top of usable
DRAM (memory 
visible to the 
operating 
system)

PCI Memory Range - 

contains PCI, chipsets, 

Direct Media Interface 

(DMI), and ICH ranges

(approximately 750 MB)

DOS

Compatibility

Memory

DRAM
Range

OM17140

~20 MB

4 GB

Top of System Address Space

 

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