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Vectored interrupts are achieved by assigning each interrupting device a unique code, typically four to eight bits in length. When a device interrupts, it sends its unique code over the
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system, in which a single interrupt service routine must determine the source of the interrupt by checking all potential interrupt sources, a slow and relatively laborious process.
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is a processing technique in which the interrupting device directs the processor to the appropriate
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to the processor, telling the processor which interrupt service routine to execute.
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Hamacher, Carl (2002). "INPUT/OUTPUT Organization".
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73:(5th ed.). McGraw Hill. p. 214.
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