Appendix b - system resources, B.1 system memory map, B.2 direct memory access channels – ADLINK NuPRO-A40H User Manual
Page 89: Appendix b, system resources, B appendix: system resources, System memory map, Direct memory access channels
System Resources
75
NuPRO-A40H
Appendix B - System Resources
B.1 System Memory Map
Table B-1: System Memory Map
B.2 Direct Memory Access Channels
Table B-2: Direct Memory Access Channels
Note (1):
DMA channel 0/1/3 is selected when using the parallel port.
Address Range
(decimal)
Address Range
(hex)
Size
Description
(4GB-2MB)
FFE00000 –
FFFFFFFF
2 MB High BIOS Area
(4GB-18MB) –
(4GB-17MB-1)
FEE00000 –
FEEFFFFF
1 MB FSB Interrupt Memory Space
(4GB-20MB) –
(4GB-19MB-1)
FEC00000 –
FECFFFFF
1 MB APIC Configuration Space
15MB – 16MB
F00000 –
FFFFFF
1 MB ISA Hole
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-CE7FF: Onboard VGA BIOS
CE800-D07FF: Intel i211 PXE option ROM
when onboard LAN boot ROM is enabled.
640 K – 768 K
A0000 – BFFFF 128 KB Video Buffer & SMM space
Channel Number
Data Width
System Resource
0
8-bits
Parallel port
(1)
1
8-bits
Parallel port
(1)
2
8-bits
Diskette drive
(1)
3
8-bits
Parallel port
(1)
4
Reserved - cascade channel
5
16-bits
Open
6
16-bits
Open
7
16-bits
Open