汇编语言程序设计实验报告

学生实验报告册2011——2012学年第1学期实验名称：汇编语言程序设计学院：信息与电气工程学院班级：09级计算机科学与技术2班学号：13514031姓名：于志佳指导教师：徐静实验一DEBUG的使用实验目的：（1）熟悉在计算机上建立、汇编、调试和运行汇编语言程序的过程（2）通过实验熟悉DEBUG程序的使用方法，掌握DEBUG命令实验题目1：编程计算表达式：V-(W-(X+7)*Y+Z)/X,其中X,Y,Z,W单元中，计算上面表达式，并把运算结果存入V存储单元中。（1）在DEBUG下运行、调试该程序。（2）用DEBUG中的E命令修改内存单元内容。（3）用DEBUG中的A命令修改指令。（4）用DEBUG中的D命令显示运算表达式的结果。源代码：datasegmentxdw0001hydw0002hzdw0010hwdw0020hvdw2DUP(?)dataendscodesegmentassumecs:code,ds:datastart:movax,datamovds,axmovax,xaddax,7imulymovcx,axmovbx,dxmovax,wcwdsubax,cxsbbdx,bxmovcx,axmovbx,dxmovax,zcwdaddax,cxadcdx,bxidivxmovv,axmovv+2,dxmovah,4chint21hcodeendsendstart运行结果：实验题目2：编写程序，把从键盘上输入的小写字母转换成大写字母显示出来（1）用DEBUG的G、T命令执行指令源程序：codesegmentassumecs:codestart:movah,01hint21hmovbl,alcmpbl,'a'jbstartcmpbl,'z'jastartsubbl,20hmovdl,blmovah,02hint21hmovah,4chint21hcodeendsendstart运行结果：实验二顺序结构程序设计实验目的：（1）学习数据传送指令和算术运算指令的用法（2）熟练掌握DEBUG的使用方法实验题目1:从键盘上接收两个一位十六进制数据，求其和，并以十进制形式显示出来。源代码：codesegmentassumecs:codestart:movcx,02h;loop循环次数movbl,00hinput:movah,01hint21hsubal,30h;数字cmpal,0ahjlnextsubal,07h;大写字母cmpal,10hjlnextsubal,20h;小写字母next:addbl,al;把两数之和放在bh中loopinput;转化为十进制数moval,blcbwcmpal,0ahjggreatermovdl,aladddl,30hjmpout1greater:movcl,0ahidivclmovcl,06himulcladdbl,al;十进制显示moval,blmovcl,04hshral,clandal,0fhjzjumpmovdl,aladddl,30hmovah,02hint21hjump:andbl,0fhmovdl,bladddl,30hout1:movah,02hint21hmovah,4chint21hcodeendsendstart运行结果：实验2：求表达式Y=A*X*X-B*X+C，已知A、B、C、D分别放在DATAA、DATAB、DATAC和DATAX字节单元中，求得的结果存入DATAY字单元中。要求：（1）在DEBUG下多次修改X值，观察执行结果。（2）从键盘上输入X值，并以十六进制形式显示结果。源代码：datasegmentdataadb2databdb3datacdb1dataxdb2dataydw?dataendscodesegmentassumecs:code,ds:datastart:movax,datamovds,axagain:moval,dataximulalmovcx,axmoval,dataacbwimulcxmovcx,axmovbx,dxmoval,databimuldataxsubcx,axsbbbx,0addcl,datacadcch,0movdatay,cxcmpdatay,0ahjaenext1movdl,byteptrdatayadddl,30hmovah,02hint21hjmpout1next1:movbx,dataymovch,blmovcl,4shrbl,clandbl,0fhmovdl,bladddl,30hmovah,02hint21hmoval,chandal,0fhmovdl,aladddl,30hmovah,02hint21hout1:movah,4chint21hcodeendsendstart运行结果：实验三简单分支结构程序设计实验目的：（1）掌握条件转移指令和无条件转移指令的使用方法（2）掌握指令对标志寄存器中各标志位的影响情况（3）掌握标志位和转移指令之间的关系实验1：从键盘上接收三个一位十进制数，选出其中大于平均值的数据显示出来。源代码：codesegmentassumecs:codestart:movah,01hint21hsubal,30hmovbl,almovah,01hint21hsubal,30hmovbh,almovah,01hint21hsubal,30hmovcl,almovch,0addch,bladdch,bhaddch,clmoval,chmovah,0cbwmovdh,03hidivdhmovdh,alcmpbl,aljnanext1movdl,bladddl,30hmovah,02hint21hnext1:moval,dhcmpbh,aljnanext2movdl,bhadddl,30hmovah,02hint21hnext2:moval,dhcmpcl,aljnaout1movdl,cladddl,30hmovah,02hint21hout1:movah,4chint21hcodeendsendstart运行结果：实验2：已知DATA单元开始存放三个带符号数，判断三个数是否为同号，若同时为正，显示“+”号，同时为负，显示“—”，否则显示“”。源代码：datasegmentdata1db4,5,6dataendscodesegmentassumecs:code,ds:datastart:movax,datamovds,axmovsi,0again:rcldata1[si],1jncnext1incsircldata1[si],1jncnext2incsircldata1[si],1jncnext2movdl,'-'jmpout1next1:incsircldata1[si],1jcnext2incsircldata1[si],1jncnext3next2:movdl,''jmpout1next3:movdl,'+'out1:movah,02hint21hmovah,4chint21hcodeendsendstart运行结果：实验四多分支结构程序设计实验目的：（1）掌握多分支结构程序设计的方法（2）掌握无条件转移指令JMP的目标地址的表示形式及使用方法实验题目１：有一函数：已知ＤＡＴＡＸ存储单元存放一个带符号字节数据Ｘ，根据Ｘ的值求出ｙ的值，并把ｙ的值存放在ＤＡＴＡＹ单元中。ｘ（ｘ＜１）ｙ＝２ｘ＋９（１＜＝ｘ＜＝１０）３ｘ－１１（ｘ＞＝１０）源代码：datasegmentdataxdb?dataydb?dataendscodesegmentassumecs:code,ds:datastart:movax,datamovds,axmovbl,dataxcmpbl,01hjlnext1cmpbl,0ahjlnext2moval,blmovch,03himulchsubal,0bhmovwordptr[datay],axmovdl,byteptr[datay]movah,02hint21hmovdl,byteptr[datay+1]jmpout1next1:movdatay,blmovdl,datayjmpout1next2:moval,blshlal,1addal,09hmovdatay,almovdl,datayout1:movah,02hint21hmovah,4chint21hcodeendsendstart运行结果：实验五循环结构程序设计实验目的：（1）掌握循环程序的结构及执行过程（2）掌握数据串操作指令和循环控制指令的功能（3）掌握循环程序的设计方法与调试方法实验１：编写程序，要求比较两个字符串ｓｔｒｉｎｇ１和ｓｔｒｉｎｇ２所含字符是否相同，若相同，则显示“ＭＡＴＣＨ”，若不相同则显示“ＮＯＭＡＴＣＨ”。实验代码：datasegmentstring1db'dfghasd'string2db'dfghasd'countequoffsetstring2-offsetstring1message1db'no_match$'message2db'match$'dataendscodesegmentassumecs:code,ds:data,es:datastart:movax,datamovds,axmoves,axmovcl,countmovsi,offsetstring1movdi,offsetstring2again:moval,byteptr[si]cmpal,byteptr[di]jnznext1incsiincdiloopagainmovdx,offsetmessage2jmpout1next1:movdx,offsetmessage1out1:movah,09hint21hmovah,4chint21hcodeendsendstart运行结果：实验２：从键盘上输入一系列字符以＄结束，统计其中字母，数字及其他字符的个数，并显示出这三类的计数结果。源代码：codesegmentassumecs:codestart:movbh,0movbl,bhmovch,bhinput:movah,01hint21hcmpal,'$'jzagaincmpal,'a'jbnext1cmpal,'z'janext2incbhjmpagainnext1:cmpal,'A'jbnext3cmpal,'Z'janext2incbhjmpagainnext3:cmpal,'0'jbnext2cmpal,'9'janext2incbljmpagainnext2:incchagain:loopnzinputmovdl,''movah,02hint21hmoval,bh;输出数字个数cbwmovcl,0ahidivclmovdh,ahmovdl,aladddl,30hmovah,02hint21hmovdl,dhadddl,30hint21hmovdl,''movah,02hint21hmoval,bl;输出字母个数cbwmovcl,0ahidivclmovdh,ahmovdl,aladddl,30hmovah,02hint21hmovdl,dhadddl,30hint21hmovdl,''movah,02hint21hmoval,ch;输出其它字符个数cbwmovcl,0ahidivclmovdh,ahmovdl,aladddl,30hmovah,02hint21hmovdl,dhadddl,30hint21hmovah,4chint21hcodeendsendstart运行结果：