IRQ Assignments: Dell Dimension� P133a, P166a, M166a, M200a, and M233a
IRQ Assignments: Dell Dimension P133a, P166a, M166a, M200a,
and M233a
| IRQ Line |
System Resource |
IRQ Line |
System Resource |
| IRQ0 |
System timer |
IRQ8 |
RTC |
| IRQ1 |
Keyboard port |
IRQ9 |
Available |
| IRQ2 |
Enables IRQ8 through IRQ15 |
IRQ10 |
Available |
| IRQ3 |
Available1 |
IRQ11 |
Default PCI IRQ2 |
| IRQ4 |
Serial port |
IRQ12 |
Mouse port |
| IRQ5 |
Available |
IRQ13 |
Math coprocessor |
| IRQ6 |
Diskette/tape drive
controller |
IRQ14 |
Primary EIDE channel |
| IRQ7 |
Parallel port |
IRQ15 |
Secondary EIDE channel |
1 IRQ3 is available provided that
no other device in the computer (such as a modem) is using COM2
or COM4.
2 The PCI IRQ is assigned to an
available IRQ line after all ISA expansion cards have been
configured. If an ISA expansion card is configured for IRQ11, the
PCI IRQ is assigned to another available IRQ line.
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