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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.