It is common practice for programmers to create continuous test - and - loop code in order

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It is common practice for programmers to create continuous test - and - loop code in order to poll I/O devices or wait for interrupts to occur. Some processors provide an instruction ( WAIT or HALT ) that allows the processor to hibernate until an interrupt occurs. Why is the latter form more efficient and desirable?

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Real Time Systems Design And Analysis

ISBN: 9780470768648

4th Edition

Authors: Phillip A. Laplante, Seppo J. Ovaska

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