Intel S845WD1-E Product Guide - Page 86

Server Board Resources, Memory Map, DMA Channels

Page 86 highlights

Server Board Resources Memory Map Table 38. System Memory Map Address Range (decimal) Address Range (hex) 1024 K - 2097152 K 100000 - 7FFFFFFF 960 K - 1024 K F0000 - FFFFF 896 K - 960 K E0000 - EFFFF 800 K - 896 K C8000 - DFFFF 640 K - 800 K 639 K - 640 K A0000 - C7FFF 9FC00 - 9FFFF 512 K - 639 K 0 K - 512 K 80000 - 9FBFF 00000 - 7FFFF Size 2047 MB 64 KB 64 KB 96 KB 160 KB 1 KB 127 KB 512 KB 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 DMA Channels Table 39. DMA Channels DMA Channel Number Data Width 0 8 or 16 bits 1 8 or 16 bits 2 8 or 16 bits 3 8 or 16 bits 4 8 or 16 bits 5 16 bits 6 16 bits 7 16 bits System Resource Open Parallel port FDD0 and 1 Open Parallel port (for ECP or EPP) & COM2 Open Open Open 86 Intel Server Board S845WD1-E (S845WD1H) Product Guide

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Intel Server Board S845WD1-E (S845WD1H) Product Guide
Server Board Resources
Memory Map
Table 38.
System Memory Map
Address Range (decimal)
Address Range (hex)
Size
Description
1024 K - 2097152 K
100000 - 7FFFFFFF
2047 MB
Extended memory
960 K - 1024 K
F0000 - FFFFF
64 KB
Runtime BIOS
896 K - 960 K
E0000 - EFFFF
64 KB
Reserved
800 K - 896 K
C8000 - DFFFF
96 KB
Available high DOS memory (open
to the PCI bus)
640 K - 800 K
A0000 - C7FFF
160 KB
Video memory and BIOS
639 K - 640 K
9FC00 - 9FFFF
1 KB
Extended BIOS data (movable by
memory manager software)
512 K - 639 K
80000 - 9FBFF
127 KB
Extended conventional memory
0 K - 512 K
00000 - 7FFFF
512 KB
Conventional memory
DMA Channels
Table 39.
DMA Channels
DMA Channel Number
Data Width
System Resource
0
8 or 16 bits
Open
1
8 or 16 bits
Parallel port
2
8 or 16 bits
FDD0 and 1
3
8 or 16 bits
Open
4
8 or 16 bits
Parallel port (for ECP or EPP) & COM2
5
16 bits
Open
6
16 bits
Open
7
16 bits
Open