Problem

How many times does the control unit refer to memory when it fetches and executes a three-...

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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Solutions For Problems in Chapter 9