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What is the difference between assembly commands RET & RETI ?

April 26, 2017assembly commands RET

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What is the difference between assembly commands RET & RETI ?

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RET is just a return from subroutine. RETI is two commands in one. RETI is EI / RET in that order. The commands EI & DI don’t take effect immediately. They take effect following the instruction that follows them.