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What is an interrupt? Explain the steps involved in handling or servicing an interrupt paying particular attention to the concept of priority. Give examples of interrupt types & number for standard PC architecture.
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What is an interrupt? Explain the steps involved in handling or servicing an interrupt paying particular attention to the concept of priority. Give examples of interrupt types & number for standard PC architecture. What is an interrupt? An interrupt is a signal from a device attached to a computer or from a program within the computer that causes the main program that operates the computer (the operating system) to stop and figure out what to do next. Almost all personal (or larger) computers today are interrupt-driven - that is, they start down the list of computer instructions in one program (perhaps an application such as a word processor) and keep running the instructions until either (A) they can't go any further or (B) an interrupt signal is sensed. After the interrupt signal is sensed, the computer either resumes running the program it was running or begins running another program. Basically, a...
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