A.ADD BYTE PTR DS:[ESP],CL B.MOV [BP],AX C.INC BYTE PTR [ECX] D.MOV DS,AX
A.MOV AX,AL B.MOVSX AX,AL C.MOVZX AX,AL D.CBW
A.XOR AX,AX B.SUB AX,AX C.ADD AX,AX D.AND AX,AX