匯編語言實驗報告

匯編語言語言實驗報告學(xué)院計算機(jī)學(xué)院班級網(wǎng)111班學(xué)號119074292姓名黃飛指導(dǎo)教師紀(jì)平實驗1匯編語言運(yùn)行環(huán)境及方法、簡單程序設(shè)計源代碼：;PROGRAMTITLEGOESHERE--Comparestring;**************************************************************************datareasegment;definedatasegmentstring1db'Movethecursorbackward.'string2db'Movethecursorbackward.';mess1db'Match.',13,10,'$'mess2db'Nomatch!',13,10,'$'datareaends;**************************************************************************prognamsegment;definecodesegment;--------------------------------------------------------------------------mainprocfarassumecs:prognam,ds:datarea,es:datareastart:;startingexecutionaddress;setupstackforreturnpushds;saveolddatasegmentsubax,ax;putzeroinAXpushax;saveitonstack;setDSregistertocurrentdatasegmentmovax,datarea;datareasegmentaddrmovds,ax;intoDSregistermoves,ax;intoESregister;MAINPARTOFPROGRAMGOESHEREleasi,string1leadi,string2cldmovcx,25repzcmpsbjzmatchleadx,mess2jmpshortdispmatch:leadx,mess1disp:movah,09int21hret;returntoDOSmainendp;endofmainpartofprogram;-------------------------------------------------------------------------prognamends;endofcodesegment;*************************************************************************endstart;endassembly實驗截圖：說明：比較兩個字符串string1和string2所含的字符是否相同。若相同則顯示‘Match’，否則，顯示‘Nomatch’。實驗2用DEBUG編程:使用堆棧段將AX和BX的內(nèi)容進(jìn)行交換等源代碼：MOVAX，BXMOVAX，0304HMOVAX，[0304H]MOVAX，[BX]MOVAX，0001[BX]MOVAX，[BX][SI]MOVAX，0001[BX][SI]HLT實驗截圖：（1）先使用-r設(shè)置sp，ax,bx,在使用-a輸入指令然后再-t單步調(diào)試剛開始ax為3000,bx為5000，使用debug調(diào)試后ax為5000，bx為3000（2）首先用-r設(shè)置bx,si，然后再用-e將a,b,c,d,e分配到指定的內(nèi)存中，-a輸入指令，最后用-t單步調(diào)試執(zhí)行單步調(diào)試后ax的值變化過程為000E,0B0A,0C0B,0D0C,0E0D實驗3存儲器塊清零和內(nèi)存塊移動實驗截圖：第一個程序進(jìn)入debug，先用-u指令查看程序代碼，然后用-d查看內(nèi)存的情況，再執(zhí)行-g講程序執(zhí)行完，再用-d查看內(nèi)存第二個程序進(jìn)入debug后，先用-u查看程序，然后用-g運(yùn)行到指令repmovsd之前，再用–d查看內(nèi)存的內(nèi)容-g前-g后實驗4將鍵盤輸入的小寫字母用大寫字母顯示出來(補(bǔ)充)源代碼：TITLESHIYANCODESEGMENTASSUMECS:CODESTART:MOVAH,01HINT21HCMPAL,61HJLSTARTSUBAL,20HMOVDL,ALMOVAH,02HINT21HCODEENDSENDSTART實驗截圖：實驗5循環(huán)程序設(shè)計（1）源代碼：CODESEGMENTASSUMECS:CODESTART:MOVAL,3EHPUSHAXMOVDL,ALMOVCL,4SHRDL,CLCMPDL,9JBENEXT1ADDDL,7NEXT1:ADDDL,30HMOVAH,2INT21HPOPAXMOVDL,ALANDDL,0FHCMPDL,9JBENEXT2ADDDL,7NEXT2:ADDDL,30HMOVAH,2INT21HMOVAH,4CHINT21HCODEENDSENDSTART實驗截圖：將ax的值進(jìn)行修改為0009（2）源代碼：codesegmentassumecs:codestart:movah,1int21hcmpal,0dhjzdonecmpal,'0'jbnextcmpal,'9'jacharupmovdl,almovah,2int21hjmpstartcharup:cmpal,41hjbnextcmpal,5ahjachrdndispc:movdl,'c'movah,2int21hnext:jmpstartchrdn:cmpal,61hjbnextcmpal,7ahjanextjmpdispcdone:movah,4chint21hcodeendsendstart實驗截圖：實驗6分支程序設(shè)計源代碼：CODESEGMENTASSUMECS:CODESTART:MOVAL,3EHPUSHAXMOVDL,ALMOVCL,4SHRDL,CLCMPDL,9JBENEXT1ADDDL,7NEXT1:ADDDL,30HMOVAH,2INT21HPOPAXMOVDL,ALANDDL,0FHCMPDL,9JBENEXT2ADDDL,7NEXT2:ADDDL,30HMOVAH,2INT21HMOVAH,4CHINT21HCODEENDSENDSTART實驗截圖：將ax的值進(jìn)行修改為0009源代碼：codesegmentassumecs:codestart:movah,1int21hcmpal,0dhjzdonecmpal,'0'jbnextcmpal,'9'jacharupmovdl,almovah,2int21hjmpstartcharup:cmpal,41hjbnextcmpal,5ahjachrdndispc:movdl,'c'movah,2int21hnext:jmpstartchrdn:cmpal,61hjbnextcmpal,7ahjanextjmpdispcdone:movah,4chint21hcodeendsendstart實驗截圖：實驗7統(tǒng)計不同成績段學(xué)生的人數(shù)（補(bǔ)充）源代碼：datasegmentgradedb76,69,84,90,73,88,99,63,100,80adb'<60renshu','$'bdb0ah,0dh,'60~70renshu:','$'cdb0ah,0dh,'70~80renshu:','$'ddb0ah,0dh,'80~90renshu:','$'edb0ah,0dh,'90~100renshu:','$'fdb0ah,0dh,'100renshu:','$'countdb10dataendsstackssegmentstacksendscodesegmentassumecs:code,ds:data,ss:stacksmainprocfarstart:movax,datamovds,axxorax,axxorbx,bxxorcx,cxxordh,dhcallcountgradecalloutputmovah,4chint21hmainendpcountgradeprocnearmovdi,0io:cmpgrade[di],60jbl1cmpgrade[di],70jbl2cmpgrade[di],80jbl3cmpgrade[di],90jbl4cmpgrade[di],100jbl5incaljmpcontinuel1:incbhjmpcontinuel2:incbljmpcontinuel3:incchjmpcontinuel4:inccljmpcontinuel5:incdhjmpcontinuecontinue:incdideccountjnzioretcountgradeendpoutputprocnearmovah,0pushaxpushdxpushcxpushbxleadx,a;小于60movah,9int21hpopbxmovdl,bhadddl,30hmovah,2int21hleadx,b;60-69movah,9int21hmovdl,bladddl,30hmovah,2int21hleadx,c;70-79movah,9int21hpopbxmovdl,bhadddl,30hmovah,2int21hleadx,d;80-89movah,9int21hmovdl,bladddl,30hmovah,2int21hleadx,e;90-99movah,9int21h