IBASE IB908 - Manual (Page 72)

APPENDIX
68 IB908F User’s Manual
Appendix
A. I/O Port Address Map
Each peripheral device in the system is assigned a set of I/O port
addresses which also becomes the identity of the device. The following
table lists the I/O port addresses used.
Address Device Description
000h - 01Fh DMA Controller #1
020h - 021h Interrupt Controller #1
040h - 043h Timer
060h - 060h Keyboard Controller
070h - 077h Real Time Clock, NMI
081h - 091h DMA Page Register
0A0h – 0A1h Interrupt Controller #2
081h - 091h DMA Controller #2
040h – 05Fh SMBus Controler
2F8h - 2FFh Serial Port #2(COM2)
3C0h- 3DFh Graphics adapter Controller
D000 - FFFh PCI-e Root Ports
3F8h - 3FFh Serial Port #1(COM1)