南邮微机原理试验一二

1.1程序修改.486DATASEGMENTUSE16SUMDB?,?MESGDB'25+9='DB0,0,'$'N1DB9,0F0HN2DB25DATAENDSCODESEGMENTUSE16ASSUMECS:CODE,DS:DATABEG:MOVAX,DATAMOVDS,AXMOVBX,OFFSETSUMMOVAH,N1MOVAL,N2ADDAH,ALMOV[BX],AHCALLCHANGMOVAH,9MOVDX,OFFSETMESGINT21HMOVAH,4CHINT21HCHANGPROCLAST:CMPBYTEPTR[BX],10JCNEXTSUBBYTEPTR[BX],10INCBYTEPTR[BX+7]MOVAH,BYTEPTR[BX]JMPLASTNEXT:MOVDX,WORDPTRSUMADD[BX+8],DXADDBYTEPTR[BX+7],30HADDBYTEPTR[BX+8],30HRETCHANGENDPCODEENDSENDBEG2.3.4从数据段NUM单元开始存有9个有符号数，并编写一个程序实现：找出最小值存放到数据段MIN单元，并将负数的个数以十进制的形式显示在屏幕上。.486DATASEGMENTUSE16NUMDB-8,-44,-88,-37,2,-1,8,-26,-18MINDB?ABDB'0'DATAENDSCODESEGMENTUSE16ASSUMECS:CODE,DS:DATABEG:MOVAX,DATAMOVDS,AXMOVBX,OFFSETNUMMOVCH,0MOVCL,9AGAIN:CMPBYTEPTR[BX],0JGNEXT1INCABCMPBYTEPTR[BX],CHJGNEXT1MOVCH,BYTEPTR[BX]NEXT1:INCBYTEPTRBXDECCLJNEAGAINMOVMIN,CHMOVAH,2MOVDL,ABINT21HMOVAH,4CHINT21HCODEENDSENDBEG.486DATASEGMENTUSE16BUF1DB'123456'BUF2DB'000000'BUF3DB'Pleaseinputcommunicationwords:',0DH,0AH,'$'BUF4DB3OUT1DB'ERRORS',0DH,0AH,'$'OUT2DB'RIGHT',0DH,0AH,'$'OUT3DB'*','$'OUT4DB0DH,0AH,'$'DATAENDSCODESEGMENTUSE16ASSUMECS:CODE,DS:DATA,ES:DATABEG:MOVAX,DATAMOVDS,AXMOVES,AXMOVAH,00HMOVAL,3INT10HLAST1:LEASI,BUF1LEADI,BUF2MOVBX,OFFSETBUF2MOVCX,6MOVAH,09HLEADX,BUF3INT21HLAST:MOVAH,07HINT21HMOVBYTEPTR[BX],ALINCBXMOVAH,09HMOVDX,OFFSETOUT3INT21HLOOPLASTMOVAH,09HLEADX,OUT4INT21HMOVCX,6CLDREPECMPSBJZEXITMOVAH,09HLEADX,OUT1INT21HDECBUF4JZLAST2JMPLAST1EXIT:MOVAH,09HLEADX,OUT2INT21HLAST2:MOVAH,4CHINT21HCODEENDSENDBEG