APPENDIX
MB950 User’s Manual
55
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 - 2FFh
Serial Port #4(COM4)
2F8h - 2FFh
Serial Port #2(COM2)
2B0 - 2DF
Graphics adapter Controller
3C0 - 3CF
EGA adapter
3D0 - 3DF
CGA adapter
3E8h – 3EFh
Serial Port #3(COM3)
3F8h - 3FFh
Serial Port #1(COM1)
Summary of Contents for MB950
Page 1: ...MB950 Intel Core i3 i5 i7 ATX Motherboard USER S MANUAL Version 1 0A ...
Page 8: ...INTRODUCTION 4 MB950 User s Manual Board Dimensions ...
Page 58: ...DRIVER INSTALLATION 54 MB950 User s Manual This page is intentionally left blank ...
Page 62: ...APPENDIX 58 MB950 User s Manual Set_F81865_Reg 0x2B bBuf Enable WDTO ...