Dma Channels; System Memory Map - Intel DG965MQ Specification

Table 12 lists the system memory map.
Table 12. System Memory Map
Address Range
(decimal)
1024 K - 8388608 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
2.2

DMA Channels

Table 13. DMA Channels
DMA Channel Number
0
1
2
3
4
5
6
7
Address Range
(hex)
100000 - 1FFFFFFFF
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
Technical Reference
Size Description
8191 MB Extended memory
64 KB Runtime BIOS
64 KB Reserved
96 KB Potential available high DOS
memory (open to the PCI bus).
Dependent on video adapter used.
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
Open
Parallel port
Diskette drive
Parallel port (for ECP or EPP)
DMA controller
Open
Open
Open
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