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1、微机上机作业三内容：编写如下程序，并在机器上调试成功。程序采用菜单式选择，可以接收用户从键盘输入的五个命令（1-5），各命令功能分别为：（1）按下“1”键，完成字符串小写字母变成大写字母。（2）按下“2”键，完成找最大值（二选一）。（3）按下“3”键，完成排序（二选一）。（4）按下“4”键，显示时间。（5）按下“5”键，结束程序运行，返回系统提示符。汇编程序：STACKSEGMENTSTACKDB256DUP(?)TOPLABELWORDSTACKENDSDATASEGMENTTABLEDWG1,G2,G3,G4,G5STRING0DB'Form
2、theschoolIDis02111460LiCheng',0DH,0AH,'$'STRING1DB'1.Changesmalllettersintocapitallettersofstring;',0DH,0AH,'$'STRING2DB'2.Findthemaximumofstring;',0DH,0AH,'$'STRING3DB'3.Sortfordatas;',0DH,0AH,'$'STRING4DB'4.ShowTime;',0DH,0AH,'$'STRING5DB'5.Exit.',0DH,0AH,'$'STRINGNDB'Input
3、thenumberyouselect(1-5):$'IN_STRDB'Inputthestring(includingletters&numbers,lessthan60letters):',0DH,0AH,'$'PRESTRDB'Originalstring:$'NEWSTRDB'Newstring:$'OUT_STRDB'Thestringis$'MAXCHRDB'Themaximumis$'IN_NUMDB'Inputthenumbers(0-255,nomorethan20numbers):',0DH,0AH,'$'OUT_NUMDB'S
4、ortednumbers:',0DH,0AH,'$'IN_TIMDB'Correctthetime(HH:MM:SS):$'HINTSTRDB'PressESC,gobacktothemenu;orpressanykeytoplayagain!$'KEYBUFDB61DB?DB61DUP(?)NUMBUFDB?DB20DUP(?)DATAENDSCODESEGMENTASSUMECS:CODE,DS:DATA,SS:STACKSTART:MOVAX,DATAMOVDS,AXMOVAX,STACKMOVSS,AXMOVSP,OFFSETTOPMAI
5、N:CALLFARPTRMENU;设置显示器AGAIN:MOVAH,2MOVBH,0;页号MOVDL,41;列号MOVDH,10;行号INT10H;光标位置设置MOVAH,1INT21HCMPAL,'1'JBAGAINCMPAL,'5'JAAGAINSUBAL,'1';N-1SHLAL,1;(N-1)*2CBW;AL->AXLEABX,TABLEADDBX,AXJMPWORDPTR[BX]G1:CALLFARPTRCHGLTRMOVAH,8INT21HCMPAL,1BHJZMAINJMPG1G2:CALLFARPTRMAXLTRMOVAH,8IN
6、T21HCMPAL,1BHJZMAINJMPG2G3:CALLFARPTRSORTNUMMOVAH,8INT21HCMPAL,1BHJZMAINJMPG3G4:CALLFARPTRTIMCHKMOVAH,8INT21HCMPAL,1BHJZMAINJMPG4G5:MOVAH,4CHINT21HMENUPROCFAR;显示主界面;设置显示器方式MOVAH,0MOVAL,3;MOVBL,0;INT10H;清屏MOVAH,2MOVBH,0;页号MOVDL,5;列号MOVDH,5;行号INT10H;光标位置设置MOVAH,9LEADX,STRING0IN
7、T21HMOVAH,2MOVDL,5;列号MOVDH,6;行号INT10H;光标位置设置MOVAH,9LEADX,STRING1INT21HMOVAH,2MOVDL,5;列号MOVDH,7;行号INT10H;光标位置设置MOVAH,9LEADX,STRING2INT21HMOVAH,2MOVDL,5;列号MOVDH,8;行号INT10H;光标位置设置MOVAH,9LEADX,STRING3INT21HMOVAH,2MOVDL,5;列号MOVDH,9;行号INT10H;光标位置设置MOVAH,9LEADX,STRING4INT21HMOVAH,2M
8、OVDL,5;列号MOVDH,10;行号INT10H;光标位置设置MOVAH,9LEADX,STRING5INT21HMOVAH,2MO
