AmITX-BE-G
Page 39
7.
System Resources
7.1.
System Memory Map
Address Range (decimal)
Address Range (hex)
Size
Description
(4GB-8MB)
FF800000 – FFFFFFFF
8 MB
High BIOS Area
(4GB-20MB) – (4GB-19MB-1)
FEC00000 – FECFFFFF
1 MB
APIC Configuration Space
960 K – 1024 K
F0000 – FFFFF
64 KB
System BIOS Area
896 K – 960 K
E0000 – EFFFF
64 KB
Extended System BIOS Area
768 K – 896 K
C0000 – DFFFF
128 KB
PCI expansion ROM area
C0000 – C7FFF: Onboard VGA BIOS
640 K – 768 K
A0000 – BFFFF
128 KB
Video Buffer & SMM space
0 K – 640 K
00000 – 9FFFF
640 KB
DOS Area
7.2.
Direct Memory Access Channels
Channel Number
Data Width
System Resource
0 8-bits
Open
1 8-bits
Open
2 8-bits
Open
3 8-bits
Open
4
Direct Memory Access Controller
5 16-bits
Open
6 16-bits
Open
7 16-bits
Open
