ADLINK Express-LPC - Manual (Page 28)

Express-LPC User’s Manual Page 28
7 System Resources
7.1 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-19MB)–(4GB-18MB-1) FED00000–FEDFFFFF 1 MB Chipset configuration 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–CEFFF: Onboard VGA BIOS
CF000–D0FFF: 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
7.2 Direct Memory Access Channels
Channel Number Data Width System Resource Comment
0 8-bits Parallel port Note (1)
1 8-bits Parallel port Note (1)
2 8-bits Diskette drive Note (1)
3 8-bits Parallel port Note (1)
4 DMA controller
5 16-bits Open
6 16-bits Open
7 16-bits Open
(1) DMA channel 0/1/3 is selected when using parallel port. DMA2 is used by Floppy.