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Troubleshooting
223
CAUTION:
You should only perform troubleshooting and simple repairs as
authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not
authorized by Dell is not covered by your warranty. Read and follow the safety
instructions that came with the product.
If the problem is not resolved by replacing the battery, see "Getting Help"
on page 241.
NOTE:
Some software may cause the system time to speed up or slow down. If the
system seems to operate normally except for the time kept in the System Setup
program, the problem may be caused by software rather than by a defective
battery.
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.
PCI IRQ pool definition is the BIOS code assigned at run time.
IRQ Line Assignment
IRQ Line
Assignment
IRQ0
8254 timer
IRQ8
Real-time clock
IRQ1
Keyboard controller
IRQ9
PCI IRQ pool definition
IRQ2
Cascade for IRQ9
IRQ10
PCI IRQ pool definition
IRQ3
Serial port (COM2) or
PCI IRQ pool definition
IRQ11
PCI IRQ pool definition
IRQ4
Serial port (COM1) or
PCI IRQ pool definition
IRQ12
Mouse controller
IRQ5
PCI IRQ pool definition
IRQ13
Processor
IRQ6
PCI IRQ pool definition
IRQ14
Primary IDE controller
IRQ7
Reserved
IRQ15
Secondary IDE controller