APPENDIX
MB961 User’s Manual
69
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 - 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
2E8h – 2EFh
Serial Port #4(COM4)
2F8h - 2FFh
Serial Port #2(COM2)
2B0h - 2DFh
Graphics adapter Controller
378h - 3FFh
Parallel Port #1(LPT1)
3E8h – 3EFh
Serial Port #3(COM3)
3F8h - 3FFh
Serial Port #1(COM1)
Summary of Contents for MB961 Series
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Page 9: ...INTRODUCTION MB961 User s Manual 5 Board Dimensions ...
Page 20: ...INSTALLATIONS 16 MB961 User s Manual Connector Locations on MB961 Series ...
Page 32: ...INSTALLATIONS 28 MB961 User s Manual PCI3 PCI4 PCI Slot ...