ADLINK Technology NuPRO-A331, User Manual

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System Resources 77
NuPRO-A331
Appendix B - System Resources
B.1 System Memory Map
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
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
CB800 – CC7FFF: Intel 82578DM
PXE option ROM when onboard LAN
boot ROM is enabled.
640 K – 768 K A0000 – BFFFF 128 KB Video Buffer & SMM space
0 K – 640 K 00000 – 9FFFF 640 KB DOS Area
Table B-1: System Memory Map
B.2 Direct Memory Access Channels
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
Table B-2: Direct Memory Access Channels
Note (1): DMA channel 0/1/3 is selected when using parallel port.
Floppy and parallel port cannot be used at the same time.