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APPENDIX
IB827 User’s Manual
53
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
Summary of Contents for IB827
Page 1: ...IB827 Intel Atom 945GSE PICMG 1 0 CPU CARD USER S MANUAL Version 1 0...
Page 4: ...iv IB827 User s Manual This page is intentionally left blank...
Page 8: ...INTRODUCTION Board Dimensions 4 IB827 User s Manual...
Page 9: ...INTRODUCTION IB827 User s Manual 5...
Page 13: ...INSTALLATIONS Jumper Locations on IB827 IB827 User s Manual 9...
Page 18: ...INSTALLATIONS 14 IB827 User s Manual This page is intentionally left blank...
Page 50: ...BIOS SETUP 46 IB827 User s Manual This page is intentionally left blank...