2. Trace the following program by showing the contents of affected registers and flags after executing each instruction: MOV RO, #4 MOV R3, #OC3H MOV A#20H again : ADD AR3 DJNZ RO, again Answer must be in the following format: Instruction Registers and flags effected after executing the instruction MOV 0,#4 MOV r3 NOCH MOV a,#20H Again: add a,r3 DJNZ ro,again