Question

If Accumulation contains AA H and register B contains 55 H, write the contents of Accumulator in hexadecimal after execution of each of the following instruction dependently (one after another):

1. ORA, B 
2. CMA 
3. ADI, FFH
4. INR A

Answer 1

1. ORA, B = FFH 
2. CMA = OOH
3. ADI, FFH = FFH
4. INR A = OOH (Cy = Not affected)