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System interrupt specifications
Hardware IRQ | System function |
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IRQ0 | System timer |
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IRQ1 | Standard |
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IRQ2 | Cascaded |
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IRQ4 | COM1 |
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IRQ6 | Diskette drive |
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IRQ7* | Parallel port |
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IRQ8 | System |
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IRQ9* | Microsoft |
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IRQ12 | Synaptics PS/2 TouchPad |
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IRQ13 | Numeric data processor |
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IRQ14 | Primary IDE channel |
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IRQ15 | Secondary IDE channel |
*Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none.
NOTE: 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.
System interrupt specifications 99