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[ The PC Guide | Systems and Components Reference Guide | Motherboard and System Devices | System Resources | Interrupts (IRQs) | IRQ Details By Number ]

IRQ0

IRQ Number: 0

16-Bit Priority: 1

Bus Line: No

Typical Default Use: System timer.

Other Common Uses: None; for system use only.

Description: This is the reserved interrupt for the internal system timer. It is used exclusively for internal operations and is never available to peripherals or user devices.

Conflicts: This is a dedicated interrupt line; there should never be any conflicts. If software indicates a conflict on this IRQ, there is a good possibility of a hardware problem somewhere on your system board.

Next: IRQ1


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