A.CF=1,OF=0 B.CF=0,OF=1 C.CF=1,OF=1 D.CF=0,OF=0
A.MOV AX,1234H B.XCHG AX,BUF C.XCHG BUF,AX D.XCHG BUF1,BUF2
A.通用寄存器 B.立即數(shù) C.存儲(chǔ)器 D.指針寄存器