BSF - Bit Scan Forward (386+)
BSR - Bit Scan Reverse (386+)
BTR - Bit Test with Reset (386+)
BTS - Bit Test and Set (386+)
其中这两个指令的Bit Test的结果放入CF中。想将CF中的结果弄出来一般用
SETB - Set if Below
SBB - Subtract with Borrow/Carry
BSF - Bit Scan Forward (386+)
BSR - Bit Scan Reverse (386+)
BTR - Bit Test with Reset (386+)
BTS - Bit Test and Set (386+)
其中这两个指令的Bit Test的结果放入CF中。想将CF中的结果弄出来一般用
SETB - Set if Below
SBB - Subtract with Borrow/Carry
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