Desktop board resources, Memory map, Dma channels – Intel D845WN User Manual
Page 74: Memory map dma channels, System memory map 30. dma channels
Intel Desktop Boards D845HV and D845WN Product Guide
74
Desktop Board Resources
Memory Map
Table 29.
System Memory Map
Address Range (decimal)
Address Range (hex)
Size
Description
1024 K - 3145728 K
100000 - 1BFFFFFFF
3071 MB
Extended Memory
960 K - 1024 K
F0000 - FFFFF
64 KB
Runtime BIOS
896 K - 960 K
E0000 - EFFFF
64 KB
Reserved
800 K - 896 K
C8000 - DFFFF
96 KB
Available high DOS memory (open
to the PCI bus)
640 K - 800 K
A0000 - C7FFF
160 KB
Video memory and BIOS
639 K - 640 K
9FC00 - 9FFFF
1 KB
Extended BIOS data (movable by
memory manager software)
512 K - 639 K
80000 - 9FBFF
127 KB
Extended conventional memory
0 K - 512 K
00000 - 7FFFF
512 KB
Conventional memory
DMA Channels
Table 30.
DMA Channels
DMA Channel Number
Data Width
System Resource
0
8 or 16 bits
1
8 or 16 bits
Parallel port
2
8 or 16 bits
Diskette drive
3
8 or 16 bits
Parallel port (for ECP or EPP)
4
8 or 16 bits
DMA controller
5
16 bits
Open
6
16 bits
Open
7
16 bits
Open