28. Implement a new nonunary instruction in place of NOP called MULA that multiplies the operand by the accumulator and puts the result in the accumulator. Allow only direct addressing. Use the interative shift-and-add algorithm of Problem 6.24. NZC should should correlate with the new value in the accumulator from the last addition. V should be set if any of the left shifts or additions produced an overflow. Use the test program provided in the Pep/9 app to test the features of the new instruction.