Application Conflicts
Some applications can leave unnecessary files or data behind after they are deleted from your system. Device drivers can also create application errors. If application errors occur, see your application device driver or operating system documentation for troubleshooting information.
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.
Table 3-1. IRQ Assignment Defaults
IRQ Line | Assignment |
IRQ0 | System timer |
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IRQ1 | Keyboard controller |
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IRQ2 | Interrupt controller 1 to enable IRQ8 through IRQ15 |
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IRQ3 | Serial port 2 (COM2 and COM4) |
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IRQ4 | Serial port 1 (COM1 and COM3) |
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IRQ5 | Available |
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IRQ6 | Diskette drive controller |
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IRQ7 | Parallel port |
IRQ8 | |
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IRQ9 | ACPI functions (used for power management) |
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IRQ10 | Available |
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IRQ11 | Available |
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IRQ12 | PS/2 mouse port unless the mouse is disabled through the System Setup program |
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IRQ13 | Math coprocessor |
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IRQ14 | Available |
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IRQ15 | Available |
NOTE: For the full name of an abbreviation or acronym used in this table, see "Abbreviations and Acronyms."