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APPENDIX
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
IRQ4
Serial Port #1
IRQ5
Reserved
IRQ6
Floppy Disk Controller
IRQ7
Parallel Port #1
IRQ8
Real Time Clock
IRQ9
Reserved
IRQ10
Reserved
IRQ11
Reserved
IRQ12
PS/2 Mouse
IRQ13
80287
IRQ14
Primary IDE
IRQ15
Secondary IDE
58
MB879 User’s Manual
Summary of Contents for MB879
Page 1: ...MB879 Intel Pentium M ATI Radeon Xpress 200 Mini ITX Motherboard USER S MANUAL Version 1 0...
Page 6: ...THE MB879 MINI ITX MOTHERBOARD vi MB879 User s Manual...
Page 10: ...INTRODUCTION Board Dimensions 4 MB879 User s Manual...
Page 19: ...INSTALLATIONS Connector Locations on MB879 MB879 User s Manual 13...
Page 28: ...INSTALLATIONS This page is intentionally left blank 22 MB879 User s Manual...
Page 52: ...BIOS SETUP This page is intentionally left blank 46 MB879 User s Manual...
Page 62: ...DRIVER INSTALLATION This page is intentionally left blank 56 MB879 User s Manual...