Справочник Пользователя для Intel Motherboard
Technical Reference
54
Motherboard Resources
Memory Map
Table 33.
Memory Map
Address Range (decimal)
Address Range (hex)
Size
Description
1024 K - 393216 K
100000 - 18000000
383 MB
Extended memory
928 K - 1024 K
E8000 - FFFFF
96 KB
System BIOS
896 K - 928 K
E0000 - E7FFF
32 KB
System BIOS (available as UMB)
800 K - 896 K
C8000 - DFFFF
96 KB
Available high DOS memory (open to ISA and
PCI buses)
PCI buses)
640 K - 800 K
A0000 - C7FFF
160 KB
Video memory and BIOS
0 K - 640 K
00000 - 9FFFF
640 KB
Conventional memory
DMA Channels
Table 34.
DMA Channels
DMA Channel Number
Data Width
System Resource
0
8- or 16-bits
Audio
1
8- or 16-bits
Audio/parallel port
2
8- or 16-bits
Diskette drive
3
8- or 16-bits
Parallel port (for ECP)/audio
4
Reserved - cascade channel
5
16-bits
Open
6
16-bits
Open
7
16-bits
Open