Desktop Board Resources; Memory Map; Dma Channels; System Memory Map - Intel D848PMB Product Manual

5 Desktop Board Resources

Memory Map

Table 36.

System Memory Map

Address Range (decimal) Address Range (hex)
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

DMA Channels

Table 37.

DMA Channels

DMA Channel Number
0
1
2
3
4
5
6
7
Size
100000 - 7FFFFFF 2047 MB
F0000 - FFFFF 64 KB
E0000 - EFFFF 64 KB
C8000 - DFFFF 96 KB
A0000 - C7FFF 160 KB
9FC00 - 9FFFF 1 KB
80000 - 9FBFF 127 KB
00000 - 7FFFF 512 KB
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
Description
Extended Memory
Runtime BIOS
Reserved
Available high DOS memory (open to the
PCI bus)
Video memory and BIOS
Extended BIOS data (movable by
memory manager software)
Extended conventional memory
Conventional memory
System Resource
Parallel port
Floppy drive
Parallel port (for ECP or EPP)
DMA controller
Open
Open
Open
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