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一、数据传送类指令（29条）操作码备注15+1MOV4MOVXA@Ri@DPTR2MOVCA@A+PC@A+DPTR2PUSH/POPdirect5XCH/XCHD/SWAPXCHDA,@RiSWAPA二、算术运算类（24条）操作码备注3×4ADD/ADDC/SUBB1DADAA5+4INC/DECINCDPTR2MUL/DIVMULABDIVAB三、逻辑操作类（24条）操作码备注3×6ANL/ORL/XRL2CLR/CPL4RL/RLC/RR/RRC四、控制转移类（17条）操作码备注4JMP/SJMP/AJMP/LJMP2ACALL/LCALL2RET/RETI1NOP2JZ/JNZ4CJNE2DJNZRn/direct五、位操作类（17条）操作码备注2MOVC,bitbit,C2×2ANL/ORLC,bitC,/bit3×2CLR/SETB/CPL5JC/JNC/JB/JNB/JBC