汇编试卷1应用题答案

1、试编写一程序段，在CHAR为首址的26个字节单元中依次存放字母‘A’∽‘Z’datasegmentchardb26dup(?)dataendscodesegmentassumecs:code,ds:datastart:movax,datamovds,axleasi,charmoval,'A'next:mov[si],almovdl,[si]movah,02hint21hincsiincalcmpsi,26jbnextmovah,4chint21hcodeendsendstart2、A1单元开始定义了一长度为N的字符串，找出其中所有的小写字母并存放到以A2单元开始的存储区中。统计出小写字母的个数，存放到SL单元中。请编一完整的源程序。数据段如下：DATASEGMENTA1DB‘……’NEQU$-A1A2DBNDUP（?）SLDB?DATAENDSdatasegmenta1db'a24d'nequ$-a1a2dbndup(?)sldb?dataendscodesegmentassumecs:code,ds:datastart:movax,datamovds,axleabx,a1leasi,a2moval,0movcx,nnext:movdl,[bx]cmpdl,'a'jbcountcmpdl,'z'jacountmov[si],dlincalincsicount:incbxloopnextmovsl,almovah,4chint21hcodeendsendstart