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1、1.寫出下列指令執(zhí)行的結(jié)果（1）.MOVA，#20HMOVR0，#20HMOV@R0,AANL??A,??#0FHORL??A,??#80HXRL??A,??@R0A=__________;????R0=????????????;???????(20H)=__________（2）.MOV?????DPTR,#2314HMOV?????R0,DPHMOV?????14H,#22HMOV?????R1,DPLMOV?????23H,#56HMOV?????A,@R0XCH?????????????A,DPH執(zhí)行以上指令后A=____________DPTR=__________
2、（3）.MOV?????A，#50HMOV?????B，#77HPUSH?????ACCPUSH?????BPOP???????ACCPOP???????B執(zhí)行完本段指令后（A）=_________（B）=_______2.設(shè)內(nèi)部RAM中59H單元的內(nèi)容為50H，寫出當(dāng)執(zhí)行下列程序段后寄存器A，R0和內(nèi)部RAM中50H，51H單元的內(nèi)容為何值？MOVA,59HMOVR0,AMOVA,#00HMOV@R0,AMOVA,#25HMOV51H,AMOV52H,#70H3.已知(A)=83H,(R0)=17H,(17H)=34H。請(qǐng)寫出執(zhí)行完下列程序段后A的內(nèi)容。ANLA,#17HO
3、RL17H,AXRLA,@R0CPLA4.試分析下列程序段，當(dāng)程序執(zhí)行后，位地址00H，01H中的內(nèi)容為何值？P1口的8條I/0線為何狀態(tài)？CLRCMOVA,#66HJCLOOP1CPLCSETB01HLOOP1:ORLC,ACC.0JBACC.2,LOOP2CLR00HLOOP2:MOVP1,A5.若A=11H，R0=33H，B=55H，（11H）=22H，（22H）=66H，（33H）=44H，在注釋區(qū)寫出分別執(zhí)行下列指令后果的結(jié)果。?（1）MOV???R1，A?????????；?（2）MOV???R3，#11H??????；?（3）MOV???@R0，#22H????
4、?；?（4）MOV???A，@R0???????；?（5）MOV???B，33H????????；?（6）MOV???40H，R0???????；6.若A=78H，R0=34H，（34H）=DCH，（56H）=ABH，Cy=1，求分別執(zhí)行下列指令后Y和Cy中的數(shù)據(jù)。?（1）ADDC??A，@R0????????；?（2）SUBB???A，56H???????；?（3）DEC????@R0??????????；?（4）INC?????56H?????????；7．若A=B7H，R0=5EH，（23H）=A1H，Cy=0，將分別執(zhí)行下列指令的結(jié)果寫在注釋區(qū)。（1）ANL????A
5、，R0??????????；（2）ORL????A，#23H????????；（3）XRL????23H，A?????????；（4）RLC????A???????????????；8．分別用一條指令實(shí)現(xiàn)下列功能。（1）若進(jìn)位位不為0，則轉(zhuǎn)PROM1程序段執(zhí)行。（2）使PC=2000H。（3）若A中的數(shù)據(jù)不等于100，則程序轉(zhuǎn)至PROM3。（4）若A中數(shù)據(jù)等于0，則程序轉(zhuǎn)至PROM4。（5）將R5中數(shù)據(jù)減1，若R5中數(shù)據(jù)不等于0，則程序轉(zhuǎn)至PROM5。（6）子程序返回。9．已知外RAM（2040H）=50H，ROM（2090H）=96H，內(nèi)RAM（20H）=85H，試求下列程
6、序依次運(yùn)行后有關(guān)單元中的內(nèi)容。MOV????DPTP，#2040H?????????；MOVX??A，@DPTR??????????????;MOVC??A，@A+DPTR????????????；ADD????A，20H???????????????；DA?????A????????????????????；SWAP???A????????????????????；10．試求下列程序依次運(yùn)行后有關(guān)單元中的內(nèi)容。MOV???20H，#A7H??????????；MOV???C，07H??????????????；ORL????C，/H??????????????；CPL???
7、?00H????????????????；SETB???03H????????????????；MOV???A，20H??????????????；RLC????A??????????????????；MOV???20H，A??????????????；11．已知：（60H）＝23H，（61H）＝61H，以下程序段執(zhí)行后（62H）＝????。CLR???????CMOV?????A，＃9AHSUBB?????A，60HADD??????A，61HDA????????AMOV?????62H，A12．已知
