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1、福建农林大学金山学院实验报告系:信息与机电工程系专业:电气工程及其自动化年级:2009级姓名:学号:实验课程:微机原理及应用实验室号:__608__实验设备号:H实验时间:2011/12/9指导教师签字:成绩:1.实验目的和要求2.实验环境实验的硬件环境是:IBM—PC机及其兼容机实验的软件环境是:操作系统:DOS2.0以上;调试程序:DEBUG.COM;宏汇编程序:MASM.EXE(或ASM.EXE);连接装配程序:LINK.EXE;3.实验内容及实验数据记录(1)输入字符串显示20个以内字符datas
2、egment;输入字符串显示bufdb21;读入的字符串长度,包括回车db0;由DOS返回的字符个数,不包括回车db11dup(?);dataendscodesegmentassumecs:code,ds:datastart:movax,data;设DS:DXmovds,axleadx,bufmovah,0ah;读入字符,没显示int21hleadx,buf+1movbx,dxmovcx,[bx]inccxaddbx,cxmoval,'$'mov[bx],almovah,9incdxint21h;mova
3、h,1;int21hmovax,4c00hint21hcodeendsendstart(2)显示成绩及格的姓名datasegment;显示成绩及格的姓名studentstrucnamedb'abcd'numberdb?englishdb?studentendss1student<'wang',1,56>s2student<'chen',2,66>s3student<'zhen',3,76>dataendscodesegmentassumecs:code,ds:datastart:movax,datamov
4、ds,axmovdh,3movbx,offsets1begin:moval,[bx].englishcmpal,60jbnoshowmovcx,4show:movdl,[bx].namemovah,2int21hincbxloopshowsubbx,4noshow:addbx,6decdhjnzbeginmovah,1int21hmovax,4c00hint21hcodeendsendstart(3)显示三人姓名datasegmentstudentstrucnamedb'abcd'numberdb?eng
5、lishdb?studentendss1student<'lai',77,60>dataendscodesegmentassumecs:code,ds:datastart:movax,datamovds,axmovbx,offsets1;pushbxmovcx,4;显示名字show:movdl,[bx].namemovah,2int21hincbxloopshowmovdl,''movah,2int21h;popbxmovbx,offsets1moval,[bx].numbermovah,0movbl,1
6、0divbl;al=商,ah=余数pushaxmovdl,aladddl,30hmovah,2int21hpopaxmovdl,ahadddl,30hmovah,2int21hmovdl,''movah,2int21h;popbxmovbx,offsets1moval,[bx].englishmovah,0movbl,10divbl;al=商,ah=余数pushaxmovdl,aladddl,30hmovah,2int21hpopaxmovdl,ahadddl,30hmovah,2int21hmovah,
7、1int21hmovax,4c00hint21hcodeendsendstart(4)显示成绩不及格的姓名datasegment;显示成绩不及格的姓名studentstrucnamedb'abcd'numberdb?englishdb?studentendss1student<'wang',13,56>dataendscodesegmentassumecs:code,ds:datastart:movax,datamovds,axmovbx,offsets1;pushbxmovcx,4;显示名字show:m
8、ovdl,[bx].namemovah,2int21hincbxloopshowmovdl,''movah,2int21h;-----------------------------;popbxmovbx,offsets1;显示学号moval,[bx].numbermovah,0movbl,10divbl;al=商,ah=余数pushaxmovdl,aladddl,30hmovah,2int21hpopaxmovdl,ahad