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Specifications
System interrupt specifications
Hardware IRQ | System function |
|
|
IRQ0 | System timer |
|
|
IRQ1 | Standard |
|
|
IRQ8 | System |
|
|
IRQ12 | Synaptics PS/2 TouchPad |
|
|
IRQ13 | Numeric data processor |
|
|
IRQ16 | Intel ICH9 Family USB universal Host Controller 2937 |
| Mobile Intel 4 Series Express Chipset Family |
|
|
IRQ17 | High Definition Audio Controller |
| Intel ICH9 Family USB universal Host Controller 2938 |
| Marvel Yukon 88E8072 |
|
|
IRQ18 | Intel ICH9 Family USB universal Host Controller 2939 |
| Intel ICH9 Family USB universal Host Controller 2936 |
|
|
IRQ19 | Intel ICH9 Family USB2 Enhanced Controller 293C |
|
|
IRQ20 | Intel ICH9 Family USB2 Enhanced Controller 293A |
| Intel ICH9 Family USB universal Host Controller 2934 |
|
|
IRQ21 | Intel |
|
|
IRQ22 | Intel ICH9 Family USB universal Host Controller 2935 |
*Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none.
✎PC Cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15. Either the infrared or the serial port may assert IRQ3 or IRQ4.
✎For operating systems after Windows 2000, APIC (Advanced programming interrupt controller) is used.
Maintenance and Service Guide |