Question: How many times does the control unit refer to memory when it fetches and executes a three- word instruction using two indirect addressing- mode addresses

How many times does the control unit refer to memory when it fetches and executes a three- word instruction using two indirect addressing- mode addresses if the instruction is

(a) A computational type requiring two operands from two distinct memory locations with the return of the result to the first memory location?

(b) A shift type requiring one operand from one memory location and placing the result in a different memory location?

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