help please

4. Trace the following. That is, imagine that you are the CPU and state exactly what you must do in each step. Start with PC = 0000H. The number of memory location for each instruction is given as a comment: ;2 :2 ;1 MOV RO, #4 MOV R1, #3 CLRA PUSHO ADD A, RO MOV RO, A CLRA PUSH 1 ADD A, R1 MOV RI, A CLRA POPO POP 1 :1 3 ;2 :1 1 :3 2 1 ;1 ;1