IBASE SE-92 - Manual (Page 59)

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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 System Timer
070h - 077h System/CMOS Real Time Clock
081h - 091h DMA Controller #2
0A0h
– 0A1h
Interrupt Controller #2
081h - 091h DMA Controller #3
2F8h - 2FFh Serial Port #2(COM2)
3C0h- 3DFh Graphics adapter Controller
3F8h - 3FFh Serial Port #1(COM1)
D000 - FFFh PCI Root Ports