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1、王思远07001404十六进制数转换为二进制数程序一.实验目的掌握键盘接收数据的方法,并了解键盘数据显示时需要转换为ASCII码及转换原理。二.实验内容编写程序,将键盘键入的四位十六进制转换为等值的二进制数,并在屏幕上显示。开始三.程序流程图显示“请输入十六进制数”四.实验程序4→BLCRLFMACROPUSHAX接受字符PUSHDXMOVAH,02H是“回车”、“空格”?MOVDL,0DHYINT21HMOVAH,02H显示出错信息是十六进制数?MOVDL,0AHNINT21HPOPDX显示已转换的二进制数转换成等值二进制POPAXENDM结束DATASEGMENT转换值送
2、DX低四位MESSDB'INPUTHEXNUMBER:','$'ERRORDB'INPUTERROR',0DH,0AH,'$'BX-1=0?DATAENDSNSTACKSEGMENTSTADW32DUP(?)TOPDW?Y显示16位二进制数STACKENDSCODESEGMENTASSUMECS:CODE,DS:DATA,ES:DATA,SS:STACKSTART:MOVAX,DATAMOVDS,AXMOVES,AXMOVSP,TOPLLL:MOVAH,09HMOVDX,OFFSETMESS王思远07001404INT21HMOVDX,OFFSETMESSINT21HCRLF
3、XORDX,DXMOVBL,04HGGG:MOVAH,01HINT21HCMPAL,0DHJZPPPCMPAL,20HJZPPPCMPAL,30HJBKKKSUBAL,30HCMPAL,0AHJBGETSCMPAL,11HJBKKKSUBAL,07HCMPAL,0FHJBEGETSCMPAL,2AHJBKKKCMPAL,2FHJAKKKSUBAL,20HGETS:MOVCL,04HSHLDX,CLXORAH,AHADDDX,AXDECBLJNZGGGCRLFCALLZHXSCRLFJMPLLLKKK:PUSHDXCRLFMOVAH,09HMOVDX,OFFSETERRORIN
4、T21HPOPDXPPP:CRLF王思远07001404CALLZHXSMOVAX,4C00HINT21HZHXSPROCMOVCX,0010HMOVBX,DXTTT:ROLBX,1MOVDL,BLANDDL,01HADDDL,30HMOVAH,02HINT21HLOOPTTTRETZHXSENDPCODEENDSENDSTART四.实验结果: