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APPENDIX
56
MB950 User’s Manual
B. Interrupt Request Lines (IRQ)
Peripheral devices use interrupt request lines to notify CPU for the service
required. The following table shows the IRQ used by the devices on
board.
Level
Function
IRQ0
System Timer Output
IRQ1
Keyboard
IRQ2
Interrupt Cascade
IRQ3
Serial Port #2, 4
IRQ4
Serial Port #1, 3
IRQ5
Reserved
IRQ6
Reserved
IRQ8
Real Time Clock
IRQ9
Reserved
IRQ10
Reserved
IRQ11
Reserved
IRQ12
PS/2 Mouse
IRQ13
80287
IRQ14
Primary IDE
IRQ15
Secondary IDE
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 ...