Desktop Board Resources; Memory Map; Dma Channels; System Memory Map - Intel D815EEA Product Manual

Desktop Board Resources

Memory Map

Table 27.

System Memory Map

Address Range (decimal)
1024 K - 524288 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

DMA Channels

Table 28.

DMA Channels

DMA Channel Number
0
1
2
3
4
5
6
7
Address Range (hex)
100000 - 1FFFFFFF
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
511 MB Extended memory
64 KB Runtime BIOS
64 KB Reserved
96 KB Available high DOS memory (open
to the PCI bus)
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
Audio
Audio / parallel port
Diskette drive
Parallel port (for ECP or EPP) / audio
DMA controller
Open
Open
Open
Technical Reference
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