Motherboard Resources; Memory Map; Dma Channels - Intel AL440LX Product Manual

Motherboard Resources

Memory Map

Table 31.

Memory Map

Address Range (decimal) Address Range (hex) Size
1024 K - 393216 K
1008 K - 1024 K
1000 K - 1008 K
996 K - 1000 K
992 K - 996 K
928 K - 992 K
896 K - 928 K
800 K - 896 K
640 K - 800 K
639 K - 640 K
512 K - 639 K
0 K - 512 K

DMA Channels

Table 32.

DMA Channels

DMA Channel Number
0
1
2
3
4
5
6
7
100000 - 18000000 383 MB
FC000 - FFFFF 16 KB
FA000 - FBFFF 8 KB
F9000 - F9FFF 4 KB
F8000 - F8FFF 4 KB
E8000 - F7FFF 64 KB
E0000 - E7FFF 32 KB
C8000 - DFFFF 96 KB
A0000 - C7FFF 160 KB
9FC00 - 9FFFF 1 KB
80000 - 9FBFF 127 KB
00000 - 7FFFF 512 KB
Data Width System Resource
8- or 16-bits Audio
8- or 16-bits Audio / parallel port
8- or 16-bits Floppy drive
8- or 16-bits Parallel port (for ECP)/audio
Reserved - cascade channel
16-bits Open
16-bits Open
16-bits Open
AL440LX Motherboard Product Guide
Description
Extended memory
Boot block
ESCD (Plug and Play configuration and DMI)
Reserved for BIOS
OEM Logo or Scan User Flash
POST BIOS
POST BIOS (Available as UMB)
Available high DOS memory (open to ISA
and PCI bus)
Video memory and BIOS
Extended BIOS data (movable by memory
manager software)
Extended conventional memory
Conventional memory
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