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
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)=0
B.(CF)=1, (SF)=1, (2P)=0, (OF)=0
C.(CF)=0, (SF)=0, (ZP)=1, (OF)=1
D.(CF)=1, (SF)=1, (ZF)=1, (OF)=1
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