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Silberschatz, Galvin and Gagne ©2005

Operating System Concepts

Common Functions of Interrupts

Interrupt transfers control to the interrupt service routine generally, through the interrupt vector, which contains the addresses of all the service routines.

Interrupt architecture must save the address of the interrupted instruction.

Incoming interrupts are disabled while another interrupt is being processed to prevent a lost interrupt.

A trap is a software-generated interrupt caused either by an error or a user request.

An operating system is interrupt driven.

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