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APPENDIX
50
IB885 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
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 IB885
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Page 8: ...INTRODUCTION Board Dimensions Top View 4 IB885 User s Manual ...
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Page 42: ...BIOS SETUP 38 IB885 User s Manual This page is intentionally left blank ...
Page 52: ...DRIVER INSTALLATION 48 IB885 User s Manual This page is intentionally left blank ...