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APPENDIX
MI956 User’s Manual
61
B. Interrupt Request Lines (IRQ)
Peripheral devices use i nterrupt request lines to notify CPU for t he
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
IRQ4
Serial Port #1
IRQ5
Reserved
IRQ6
Reserved
IRQ7
Reserved
IRQ8
Real Time Clock
IRQ9
Reserved
IRQ10
Serial Port #3
IRQ11
Serial Port #4
IRQ12
PS/2 Mouse
IRQ13
80287
IRQ14
Primary IDE
IRQ15
Secondary IDE
Summary of Contents for MI956
Page 1: ...MI956 Intel Sandy Bridge PCH Mini ITX Motherboard USER S MANUAL Version 1 0 ...
Page 4: ...iv MI956 User s Manual This page is intentionally left blank ...
Page 8: ...INTRODUCTION 4 MI956 User s Manual Board Size 170mm x 170mm ...
Page 9: ...INTRODUCTION MI956 User s Manual 5 Board Dimensions ...
Page 18: ...INSTALLATIONS 14 MI956 User s Manual Connector Locations on MI956 ...
Page 25: ...INSTALLATIONS MI956 User s Manual 21 This page is intentionally left blank ...