二循环与子程序程序设计

1、MOVAH,09HMOVAH,09HANDAX,000FHCMPAL,0AHANDAX,000FHCMPAL,0AHANDAX,000FHCMPAL,0AHANDAX,000FHCMPAL,0AHMOVDX,OFFSETAMOVDX,OFFSETA实验二循环与子程序程序设计一、实验目的1)加深对循环结构的理解。2)掌握循环程序的设计方法。3)学习子程序的定义和调用方法。4)掌握子程序、子程序的嵌套、递归子程序的结构。5)掌握子程序设计、编制及调试。6)熟练掌握DEBUG的常用命令，学会用DEBUG调试程序。二、实验内容1)编制程序计算S=1+23+34+45+N(N+1)+直至1N(N+1)大

2、于200为止，并将结果由屏幕上显示出来。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结果：S=1+2X3+3X4+4X5+一+N(N+1)+-=045F3)编制在屏幕上显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）设有五个字数据存放在以为首地址的内存单元中，要求采用调用多个字数据相加的子程

6、序方法编程，和的低位字放在单元，和的高位字放在单元，并将结果显示在屏幕上。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结果：000107B66）编写一个递归子程序，计算指数函数乂叫勺值，其中X,n从键盘输入。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