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APPENDIX
IB905 User’s Manual
55
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
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
IRQ19
SATA Storage
Summary of Contents for IB905
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Page 9: ...INTRODUCTION IB905 User s Manual 5 Board Dimensions...
Page 18: ...INSTALLATIONS 14 IB905 User s Manual...
Page 21: ...INSTALLATIONS IB905 User s Manual 17 Not used 20 19 Ground...
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