Irq assignment conflicts – Dell PowerEdge C6100 User Manual
Page 127
Troubleshooting Your System
127
13 Replace processor 1 with processor 2. See "Installing a Processor" on
14 Repeat step 9 through step 11.
If you have tested both the processors and the problem persists, the system
board is faulty. See "Getting Help" on page 143.
IRQ Assignment Conflicts
Most PCI devices can share an IRQ with another device, but they cannot use
an IRQ simultaneously. To avoid this type of conflict, see the documentation
for each PCI device for specific IRQ requirements.
Table 4-1.
Assignment Specific IRQ Requirements
IRQ Line
Assignment
IRQ Line
Assignment
IRQ0
8254 timer
IRQ8
RTC
IRQ1
Keyboard controller IRQ9
SCI
IRQ2
Cascade for IRQ9
IRQ10
VGA
IRQ3
Serial port
IRQ11
USB controller
IRQ4
Serial port
IRQ12
Mouse controller
IRQ5
Free
IRQ13
Numeric data
Processor
IRQ6
Free
IRQ14
Primary IDE
controller
IRQ7
Free
IRQ15
Secondary IDE
controller
book.book Page 127 Thursday, March 4, 2010 4:38 PM