单项选择题
A、ADD. SI,AX B、ADD .15H,BX C、MOV .CS,AX D、MOV . AX,[SI][DI]
A.0FF00H;0100H B.0FF00H;0FF00H C.0100H;0100H D.0100H;0FF00H
A.AF B.IF C.DF D.TF