二循環(huán)與子程序程序設(shè)計

1、MOVAH,09HMOVAH,09HANDAX,000FHCMPAL,0AHANDAX,000FHCMPAL,0AHANDAX,000FHCMPAL,0AHANDAX,000FHCMPAL,0AHMOVDX,OFFSETAMOVDX,OFFSETA實驗二循環(huán)與子程序程序設(shè)計一、實驗?zāi)康?)加深對循環(huán)結(jié)構(gòu)的理解。2)掌握循環(huán)程序的設(shè)計方法。3)學(xué)習(xí)子程序的定義和調(diào)用方法。4)掌握子程序、子程序的嵌套、遞歸子程序的結(jié)構(gòu)。5)掌握子程序設(shè)計、編制及調(diào)試。6)熟練掌握DEBUG的常用命令，學(xué)會用DEBUG調(diào)試程序。二、實驗內(nèi)容1)編制程序計算S=1+23+34+45+N(N+1)+直至1N(N+1)大

2、于200為止，并將結(jié)果由屏幕上顯示出來。DATASEGMENTADBS=1+2x3+3x4+4x5+.+N(N+1)+=,$BDB4DUP(0),$DATAENDSSTACKSEGMENTPARASTACKDW40HDUP(0)STACKENDSCODESEGMENTASSUMECS:CODE,DS:DATASTART:MOVAX,DATAMOVDS,AXINT21HMOVDX,1MOVBL,2NEXT:MOVAL,BLINCBLMULBLADDDX,AXCMPAX,200JNANEXTCALLCHGASCMOVAH,4CHINT21HCHGASCPROCMOVCX,0004HMOVDI,OF

3、FSETBMOVAX,DXL6:PUSHCXMOVCL,04HROLAX,CLMOVDX,AXPOPCXJBL7ADDAL,07HL7:ADDAL,30HMOVDI,ALMOVAX,DXINCDILOOPL6MOVDX,OFFSETBMOVAH,09HINT21HRETCHGASCENDPCODEENDSENDSTART結(jié)果：S=1+2X3+3X4+4X5+一+N(N+1)+-=045F3)編制在屏幕上顯示九九乘法表的程序。CMPAL,09HCMPAL,09HCMPAL,09HCMPAL,09HMOVS,ALMOVS,ALCODESEGMENTASSUMECS:CODE,DS:DATA,SS:

4、STACK1START:MOVAX,DATAMOVDS,AXMOVAL,0AHMOVCX,09HLOP1:PUSHCXPUSHAXSUBAL,CLMOVBL,ALINCBLMOVCL,ALLOP2:PUSHCXPUSHBXPUSHAXMOVA,ALMOVDL,ALADDDL,30HMOVAH,02HINT21HSUBBL,CLMOVAL,AMULBLMOVDL,2AHMOVAH,02HINT21HADDBL,30HMOVDL,BLMOVAH,02HINT21HMOVDL,3DHMOVAH,02HINT21HMOVAL,SMOVCL,04HROLAL,CLANDAL,0FHCMPAL,09HJL

5、ENEXT1ADDAL,07HNEXT1:ADDAL,30HMOVDL,ALMOVAH,02HINT21HMOVAL,SANDAL,0FHMOVAH,4CHMOVAH,4CHINT21HJLENEXT2ADDAL,07HNEXT2:ADDAL,30HMOVDL,ALMOVAH,02HINT21HMOVDL,20HMOVAH,02HINT21HPOPAXPOPBXPOPCXLOOPLOP2MOVDL,0AHMOVAH,02HINT21HMOVDL,0DHMOVAH,02HINT21HPOPAXPOPCXLOOPLOP1）設(shè)有五個字數(shù)據(jù)存放在以為首地址的內(nèi)存單元中，要求采用調(diào)用多個字數(shù)據(jù)相加的子程

6、序方法編程，和的低位字放在單元，和的高位字放在單元，并將結(jié)果顯示在屏幕上。NEXT1:ADDDI,2LOOPNEXT2POPDIRETWDADDENDPSHOWPROCPUSHCXPUSHDIMOVCX,04HMOVDI,OFFSETRESULTMOVBX,AXADDDI,07HBBB:MOVAX,BXANDAX,000FHCMPAL,0AHJBQQQADDAL,07HQQQ:ADDAL,30HMOVDI,ALDECDIPUSHCXMOVCL,04SHRBX,CLPOPCXLOOPBBBMOVCX,0004HCCC:MOVAX,DXANDAX,000FHCMPAL,0AHJBDDDADDAL,

7、07HDDD:ADDAL,30HMOVDI,ALDECDIPUSHCXMOVCL,04HSHRDX,CLPOPCXLOOPCCCPOPDIPOPCXRETSHOWENDPBEGIN:MOVAX,DATAMOVDS,AXMOVCX,COUNTCALLWDADDCALLSHOW結(jié)果：000107B66）編寫一個遞歸子程序，計算指數(shù)函數(shù)乂叫勺值，其中X,n從鍵盤輸入。INT21HINT21HINT21HINT21HMOVAH,09HTOC o 1-5 h zINT21HCALLSTDINMOVAH,0MOVDX,AXPUSHDXMOVDX,OFFSETCMOVAH,09HINT21HMOVDX,OF

8、FSETEMOVAH,09HINT21HPOPDXCALLSTDINMOVAH,0MOVCX,AXCALLFACTMOVA,BXCALLXIANSHIMOVAH,4CHINT21HSTDINPROCMOVAH,1XIANSHIENDPXIANSHIENDPCMPAL,30HJLSTDINCMPAL,37HJGSTDINANDAL,0FHRETSTDINENDPFACTPROCCMPCX,0JGNEXTMOVBX,1RETNEXT:PUSHCXDECCXCALLFACTPOPCXMOVAX,DXPUSHDXMOVDX,0MULBXMOVBX,AXPOPDXRETFACTENDPXIANSHIPROCMOVCX,0004HMOVDI,OFFSETB+1MOVAX,AL6:PUSHCXMOVCL,04HROLAX,CLMOV