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What does SWI stand for?

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What does SWI stand for?

(a) standard interrupt instruction

(b) sequential interrupt instruction

(c) software interrupt instruction

(d) system interrupt instruction

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Asked question is from Sources of Interrupts topic in portion Interrupts and Exceptions of Embedded Systems

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The correct option is (c) software interrupt instruction

The explanation: The instruction set of software interrupts are provided by the special instruction set. One such is the SWI which is commonly used in Z80.

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