求出15F4H减去4EA0H之差,并根据结果设置标志位SF、ZF、CF和OF的值。
求出15F4H减去4EA0H之差,并根据结果设置标志位SF、ZF、CF和OF的值。
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SUB AX,0FFFH后这4个标志位的状态是( )。A.(CF)=0, (SF)=0, (2P)=0, (OF)=0B.(CF)=1, (SF)=1, (2P)=0, (OF)=0C.(CF)=0, (SF)=0, (ZP)=1, (OF)=1D.(CF)=1, (SF)=1, (ZF)=1, (OF)=1
已知(AL)=55H,执行指令AND AL,0FH后,相关标志位的状态是()。A、CF=1,OF=1,SF=0,PF=1,ZF=0B、CF=0,OF=0,SF=0,PF=1,ZF=1C、CF=0,OF=0,SF=0,PF=1,ZF=0D、CF=0,OF=1,SF=1,PF=1,ZF=0
在程序状态字寄存器PSW中,作为记录指令操作结果的标志是()。A、CF,OF,PF,AF,SF,ZFB、CF,PP,ZF,SFC、OF,DF,IF,SF,ZF,CFD、1F,DF,OF,CF
问答题求出15F4H减去4EA0H之差,并根据结果设置标志位SF、ZF、CF和OF的值。