AXIOMTEK SBC86822 Series, User Manual

Page: 48 / 82

SBC86822 Series All-In-One Mini ITX Board User’s Manual
Hardware Description
42
3.4 I/O Port Address Map
The Intel
®
Pentium
®
M/Celeron
®
M CPUs can communicate via I/O
ports. There are total 1KB port addresses available for assignment to
other devices via I/O expansion cards.
Address Devices
000-01F DMA controller #1
020-03F Interrupt controller #1
040-05F Timer
060-06F Keyboard controller
070-07F Real time clock, NMI
080-09F DMA page register
0A0-0BF Interrupt controller #2
0C0-0DF DMA controller #2
0F0 Clear math coprocessor busy signal
0F1 Reset math coprocessor
0F8-0FF Math processor
1F0-1F8 Fixed disk controller
250-25F HR I/O
300-31F Prototype card
380-38F SDLC #2
3A0-3AF SDLC #1
3B0-3BF MDA video card (including LPT1)
3C0-3CF EGA card
3D0-3DF CGA card
3F8-3FF Serial port #1 (COM1)
3E8-3EF Serial port #3 (COM3)
2F8-2FF Serial port #2 (COM2)
2E8-2EF Serial port #4 (COM4)
2E0-2E7 Serial port #5 (COM5)
2F0-2F7 Serial port #6 (COM6)
3F0-3FF Super I/O