5 Desktop Board Resources
Memory Map
Table 34. System Memory Map
Address Range (decimal)
1024 K - 2097152 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
Address Range (hex)
100000 - 7FFFFFFF
F0000 - FFFFF
E0000 - EFFFF
C8000 - DFFFF
A0000 - C7FFF
9FC00 - 9FFFF
80000 - 9FBFF
00000 - 7FFFF
Size | Description |
2047 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 |
DMA Channels
Table 35. DMA Channels
DMA Channel Number
0
1
2
3
4
5
6
7
Data Width
8 or 16 bits
8 or 16 bits
8 or 16 bits
8 or 16 bits
8 or 16 bits
16bits
16bits
16bits
System Resource
Open
Parallel port
Diskette drive
Parallel port (for ECP or EPP)
DMA controller
Open
Open
Open
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