51匯編語(yǔ)言助記符

1、MOV(英文為Move)：對(duì)內(nèi)部數(shù)據(jù)寄存器RAM和特殊功能寄存器SFR的數(shù)據(jù)進(jìn)行傳送；MOVC(MoveCode)讀取程序存儲(chǔ)器數(shù)據(jù)表格的數(shù)據(jù)傳送；MOVX(MoveExternalRAM)對(duì)外部RAM的數(shù)據(jù)傳送；XCH(Exchange)字節(jié)交換；XCHD(Exchangelow-orderDigit)低半字節(jié)交換；PUSH(PushontoStack)入棧；POP(PopfromStack)出棧；(2) 算術(shù)運(yùn)算類指令(8種助記符)ADD(Addition)加法；ADDC(AddwithCarry)帶進(jìn)位加法；SUBB(SubtractwithBorrow)帶借位減法；DA(Decimal

2、Adjust)十進(jìn)制調(diào)整；INC(Increment)加1；DEC(Decrement)減1；MUL(Multiplication、Multiply)乘法；DIV(Division、Divide)除法；(3) 邏輯運(yùn)算類指令(10種助記符)ANL(ANDLogic)邏輯與；ORL(ORLogic)邏輯或；XRL(Exclusive-ORLogic)邏輯異或；CLR(Clear)清零；CPL(Complement)取反；RL(Rotateleft)循環(huán)左移；RLC(RotateLeftthroughttheCarryflag)帶進(jìn)位循環(huán)左移；RR(RotateRight)循環(huán)右移；RRC(Rot

3、ateRightthroughttheCarryflag)帶進(jìn)位循環(huán)右移；SWAP(Swap)低4位與高4位交換；(4) 控制轉(zhuǎn)移類指令(17種助記符)ACALL(AbsolutesubroutineCall)子程序絕對(duì)調(diào)用；LCALL(LongsubroutineCall)子程序長(zhǎng)調(diào)用；RET(Returnfromsubroutine)子程序返回；RETI(ReturnfromInterruption)中斷返回；SJMP(ShortJump)短轉(zhuǎn)移；AJMP(AbsoluteJump)絕對(duì)轉(zhuǎn)移；LJMP(LongJump)長(zhǎng)轉(zhuǎn)移；CJNE(CompareJumpifNotEqual)比較不相

4、等則轉(zhuǎn)移；DJNZ(DecrementJumpifNotZero)減1后不為0則轉(zhuǎn)移；JZ(JumpifZero)結(jié)果為0則轉(zhuǎn)移；JNZ(JumpifNotZero)結(jié)果不為0則轉(zhuǎn)移；JC(JumpiftheCarryflagisset)有進(jìn)位則轉(zhuǎn)移；JNC(JumpifNotCarry)無(wú)進(jìn)位則轉(zhuǎn)移；JB(JumpiftheBitisset)位為1則轉(zhuǎn)移；JNB(JumpiftheBitisNotset)位為0則轉(zhuǎn)移；JBC(JumpiftheBitissetandClearthebit)位為1則轉(zhuǎn)移，并清除該位;NOP(NoOperation)空操作；(5)位操作指令(1種助記符)SETB

5、(SetBit)位置1。1. 通用數(shù)據(jù)傳送指令.MOV>moveMOVSX>extendedmovewithsigndataMOVZX>extendedmovewithzerodataPUSH>pushPOP>popPUSHA>pushallPOPA>popallPUSHAD>pushalldataPOPAD>popalldataBSWAP>byteswapXCHG>exchangeCMPXCHG>compareandchangeXADD>exchangeandaddXLAT>translate2. 輸入輸出端

6、口傳送指令.IN>inputOUT>output3. 目的地址傳送指令.LEA>loadeffectiveaddressLDS>loadDSLES>loadESLFS>loadFSLGS>loadGSLSS>loadSS4. 標(biāo)志傳送指令.LAHF>loadAHfromflagSAHF>saveAHtoflagPUSHF>pushflagPOPF>popflagPUSHD>pushdflagPOPD>popdflag二、算術(shù)運(yùn)算指令A(yù)DD>addADC>addwithcarryINC>incr

7、ease1AAA>asciiaddwithadjustDAA>decimaladdwithadjustSUB>substractSBB>substractwithborrowDEC>decrease1NEC>negativeCMP>compareAAS>asciiadjustonsubstractDAS>decimaladjustonsubstractMUL>multiplicationIMUL>integermultiplicationAAM>asciiadjustonmultiplicationDIV>divid

8、eIDIV>integerdivideAAD>asciiadjustondivideCBW>changebytetowordCWD>changewordtodoublewordCWDE>changewordtodoublewordwithsigntoEAXCDQ>changedoublewordtoquadrateword三、邏輯運(yùn)算指令A(yù)ND>andOR>orXOR>xorNOT>notTEST>testSHL>shiftleftSAL>arithmaticshiftleftSHR>shiftrightSAR

9、>arithmaticshiftrightROL>rotateleftROR>rotaterightRCL>rotateleftwithcarryRCR>rotaterightwithcarry四、串指令MOVS>movestringCMPS>comparestringSCAS>scanstringLODS>loadstringSTOS>storestringREP>repeatREPE>repeatwhenequalREPZ>repeatwhenzeroflagREPNE>repeatwhennotequal

10、REPNZ>repeatwhenzeroflagREPC>repeatwhencarryflagREPNC>repeatwhennotcarryflag五、程序轉(zhuǎn)移指令1>無(wú)條件轉(zhuǎn)移指令（長(zhǎng)轉(zhuǎn)移）JMP>jumpCALL>callRET>returnRETF>returnfar2>條件轉(zhuǎn)移指令（短轉(zhuǎn)移,-128到+127的距離內(nèi)）JAE>jumpwhenaboveorequalJNB>jumpwhennotbelowJB>jumpwhenbelowJNAE>jumpwhennotaboveorequalJBE>

11、jumpwhenbeloworequalJNA>jumpwhennotaboveJG>jumpwhengreaterJNLE>jumpwhennotlessorequalJGE>jumpwhengreaterorequalJNL>jumpwhennotlessJL>jumpwhenlessJNGE>jumpwhennotgreaterorequalJLE>jumpwhenlessorequalJNG>jumpwhennotgreaterJE>jumpwhenequalJZ>jumpwhenhaszeroflagJNE>ju

12、mpwhennotequalJNZ>jumpwhennothaszeroflagJC>jumpwhenhascarryflagJNC>jumpwhennothascarryflagJNO>jumpwhennothasoverflowflagJNP>jumpwhennothasparityflagJPO>jumpwhenparityflagisoddJNS>jumpwhennothassignflagJO>jumpwhenhasoverflowflagJP>jumpwhenhasparityflagJPE>jumpwhenparityf

13、lagisevenJS>jumpwhenhassignflag3>循環(huán)控制指令（短轉(zhuǎn)移）LOOP>loopLOOPE>loopequalLOOPZ>loopzeroLOOPNE>loopnotequalLOOPNZ>loopnotzeroJCXZ>jumpwhenCXiszeroJECXZ>jumpwhenECXiszero4>中斷指令I(lǐng)NT>interruptINTO>overflowinterruptIRET>interruptreturn5>處理器控制指令HLT>haltWAIT>waitESC>escapeLOCK>lockNOP>nooperationSTC>setcarryCLC>clearcarryCMC>carrymak