Instruction Sets: Characteristics and Functions Addressing ...
Elements of an Instruction •Operation code (opcode) –Do this: ADD, SUB, MPY, DIV, LOAD, STOR •Source operand reference –To this: (address of) argument of op, e.g. register, memory location •Result operand reference –Put the result here (as above) •Next instruction reference (often implicit) –When you have done that, do this: BR
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