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11、正文： 8051INSTRUCTIONSET1.Arithmeticoperations:Mnemo
12、nic Byte CycADDA,@Ri 1 1ADDA,Rn 1 1ADDA,direct 2 1ADDA,#data 2 1ADDCA,@Ri 1 1ADDCA,Rn 1 1ADDCA,direct 2 1ADDCA,#data 2 1SUBBA,@Ri 1 1SUBBA,Rn 1 1SUBBA,direct 2 1SUBBA,#data 2 1INCA 1 1INC@Ri 1 1INCRn 1 1INCDPTR 1 1INCdirect 2 1INCdirect
13、 2 1DECA 1 1DEC@Ri 1 1DECRn 1 1DECdirect 2 1MULAB 1 4DIVAB 1 4DAA 1 12.Logicalopreations:ANLA,@Ri 11XRLA,@Ri 11ANLA,Rn 11XRLA,Rn 11ANLA,direct21XRLA,direct21ANLA,#data21XRLA,#data21ANLdirect,A21XRLdirect,A21ANLdirect,#data32XRLdirect,#data32ORLA,@Ri11CLRA11OR
14、LA,Rn11CPLA11ORLA,direct21RLA11ORLA,#data21RLCA11ORLdirect,A21RRA11ORLdirect,#data32RRCA11SWAPA113.Datatransfer:MnemonicByteCycMOVA,@Ri11MOVDPTR,#data1632MOVA,Rn11MOVCA,@A+DPTR12MOVA,direct21MOVCA,@A+PC12MOVA,#data21MOVXA,@Ri12MOV@Ri,A11MOVXA,@DPTR12MOV@Ri,direct22MOVX@Ri,A12
15、MOV@Ri,#data21MOVX@DPTR,A12MOVRn,A11PUSHdirect22MOVRn,direct22POPdirect22MOVRn,#data21XCHA,@Ri11MOVdirect,A21XCHA,Rn11MOVdirect,@Ri22XCHA,direct21MOVdirect,Rn22XCHDA,@Ri11MOVdirect,direct32MOVdirect,#data324.Booleanvariablemanipulation:MnemonicByteCycCLRC11ANLC,bit22SETBC11AN
16、LC,/bit22CPLC11ORLC,bit22
