IBASE Technology MI950, User Manual, Page: 65 / 71

APPENDIX
MI950 User’s Manual 61
Appendix
A. I/O Por t Addr ess Map
Each peripheral device in the system is assigned a set of I/O port
addresses that also becomes the identity of the device. The following
table lists the I/O port addresses used.
Addr ess Device Descr iption
000h ­ 01Fh DMA Controller #1
020h ­ 03Fh Interrupt Controller #1
040h ­ 05Fh Timer
060h ­ 06Fh Keyboard Controller
070h ­ 07Fh Real Time Clock, NMI
080h ­ 09Fh DMA Page Register
0A0h ­ 0BFh Interrupt Controller #2
0C0h ­ 0DFh DMA Controller #2
0F0h Clear Math Coprocessor Busy Signal
0F1h Reset Math Coprocessor
1F0h ­ 1F7h IDE Interface
278h ­ 27Fh Parallel Port #2(LPT2)
2F8h ­ 2FFh Serial Port #2(COM2)
2B0h ­ 2DFh Graphics adapter Controller
378h ­ 3FFh Parallel Port #1(LPT1)
360h ­ 36Fh Network Ports
3B0h ­ 3BFh Monochrome & Printer adapter
3C0h ­ 3CFh EGA adapter
3D0h ­ 3DFh CGA adapter
3F0h ­ 3F7h Floppy Disk Controller
3F8h ­ 3FFh Serial Port #1(COM1)