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 229.
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.
IRQ Line | Assignment | IRQ Line | Assignment |
|
|
|
|
IRQ0 | 8254 timer | IRQ8 | |
IRQ1 | Keyboard controller | IRQ9 | PCI IRQ pool definition |
IRQ2 | Cascade for IRQ9 | IRQ10 | PCI IRQ pool definition |
IRQ3 | Serial port (COM2) or | IRQ11 | PCI IRQ pool definition |
| PCI IRQ pool definition |
|
|
IRQ4 | Serial port (COM1) or | IRQ12 | Mouse controller |
| PCI IRQ pool definition |
|
|
IRQ5 | PCI IRQ pool definition | IRQ13 | Processor |
IRQ6 | PCI IRQ pool definition | IRQ14 | Primary IDE controller |
IRQ7 | Reserved | IRQ15 | Secondary IDE controller |
PCI IRQ pool definition is the BIOS code assigned at run time.
Troubleshooting
