Memory Map; Dma Channels; System Memory Map - Intel D915GLVG Specification

2.2.2 Memory Map

Table 9 lists the system memory map.
Table 9.

System Memory Map

Address Range (decimal)
1024 K - 4194304 K
960 K - 1024 K
896 K - 960 K
800 K - 896 K
640 K - 800 K
639 K - 640 K
512 K - 639 K
0 K - 512 K

2.3 DMA Channels

Table 10.

DMA Channels

DMA Channel Number
0
1
2
3
4
5
6
7
Address Range (hex)
100000 - FFFFFFFF
F0000 - FFFFF
E0000 - EFFFF
C8000 - DFFFF
A0000 - C7FFF
9FC00 - 9FFFF
80000 - 9FBFF
00000 - 7FFFF
Data Width
8 or 16 bits
8 or 16 bits
8 or 16 bits
8 or 16 bits
8 or 16 bits
16 bits
16 bits
16 bits
Size Description
4095 MB Extended memory
64 KB Runtime BIOS
64 KB Reserved
96 KB Potential available high DOS
memory (open to the PCI
Conventional bus). Dependent on
video adapter used.
160 KB Video memory and BIOS
1 KB Extended BIOS data (movable by
memory manager software)
127 KB Extended conventional memory
512 KB Conventional memory
System Resource
Open
Parallel port
Diskette drive
Parallel port (for ECP or EPP)
DMA controller
Open
Open
Open
Technical Reference
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