BASED ADDRESSING反转输出

程序运行：

代码：

datas segmentstring        db 'BASED ADDRESSING$'
count         dw $-string-1      ;计算string的长度，$为当前地址，-1为去掉字符串结束符'$'srcsTip  db 'SRC string:$'
dstsTip  db 0dh,0ah,'DST string:$' ;0dh,0ah回车换行datas endsstacks segmentstacks endscodes segmentmain proc farassume cs:codes,ds:datas,ss:stacksstart:   push dssub ax,axpush axmov ax,datas               ;初始化dsmov ds,ax;输出源字符提示lea dx,srcsTip             mov ah,9int 21h   ;输出源字符lea dx,stringmov ah,9int 21h;输出目标字符提示lea dx,dstsTip             mov ah,9int 21h;输出目标字符		mov cx,count                mov ah,2mov bx,count                      dec bx                     ;获得最后一个字符的下标s1:mov dl,string[bx]int 21hdec bx                 ;bx-1，移至前一个字符loop s1retmain endpcodes endsend  main