当运算结果各位全部为零时,标志ZF=0。
当运算结果各位全部为零时,标志ZF=0。
相关考题:
若(AX)=0122H,四个标志位CF、SF、ZF、OF 的初始状态为0,执行指令SLIBAX,OFFFH后,这四个标志位的状态是( )。A.(CF)=0, (SF)=0, (ZF)=0, (OF)=0B.(CF)=1, (SF)=1, (ZF)=0, (OF)=0C.(CF)=0, (SF)=0, (ZF)=1, (OF)=1D.(CF)=1, (SF)=1, (ZF)=1, (OF)=1
若(AX)=0122H,四个标志位CF、SF、ZF、OF的初始状态为0,执行指令SUB AX, 0FFFH后,这四个标志位的状态是______。A.(CF)=O,(SF)=0,(ZF)=0,(OF)=0B.(CF)=1, (SF)=1, (ZF)=0, (OF)=0C.(CF)=0, (SF)=0, (ZF)=1, (OF)=1D.(CF)=1, (SF)=1, (ZF)=1, (OF)=1
若(AX)=0122H,4个标志位CF、SF、ZF、OF的初始状态为0,执行指令SUBAX,0FFFH后这4个标志位的状态是( )。A.(CF)=0, (SF)=0, (ZF)=0, (OF)=0B.(CF)=1, (SF)=1, (ZF)=0, (OF)=0C.(CF)=0, (SF)=0, (ZF)=1, (OF)=1D.(CF)=1, (SF)=1, (ZF)=1, (OF)=1
单选题在标志寄存器中,CY=0,Z=0,S=0分别表示()。A无进位,运算结果为0,运算结果为负B无进位,运算结果非0,运算结果为正C有进位,运算结果非0,运算结果为正D有进位,运算结果为0,运算结果为负
填空题当进行加法或减法运算时,若最高位发生进位或借位,则CF=();标志寄存器的标志位ZF=1表示运算结果()