IRQ Assignments
IRQ Line | System Resource | IRQ Line | System Resource |
|
|
|
|
|
|
|
|
IRQ0 | System timer | IRQ8 | RTC |
|
|
|
|
|
|
|
|
IRQ1 | Keyboard buffer | IRQ9 | Available |
|
|
|
|
|
|
|
|
IRQ2 | Enables IRQ8 through IRQ15 | IRQ10 | Available |
|
|
|
|
|
|
|
|
IRQ3 | Available4 | IRQ11 | Available |
|
|
|
|
IRQ4 | Serial port | IRQ12 | Mouse port |
|
|
|
|
|
|
|
|
IRQ5 | Available | IRQ13 | Math coprocessor |
|
|
|
|
|
|
|
|
IRQ6 | Floppy/tape drive controller | IRQ14 | Primary IDE channel |
|
|
|
|
|
|
|
|
IRQ7 | Parallel port | IRQ15 | Secondary IDE channel |
|
|
|
|
|
|
|
|
4IRQ3 is available provided that no other device in the computer (such as a modem) is using COM2 or COM4.
Default Dell-Installed Card Placement
Card Slot | Card |
|
|
|
|
|
|
|
PCI Slot 1 | Open |
|
|
|
|
|
|
|
PCI Slot 2 | Audio |
|
|
|
|
|
|
|
PCI Slot 3 | Network adapter |
|
|
|
|
|
|
|
PCI Slot 4 | Modem |
|
|
|
|
|
|
|