汇编-遍历修改

 

2. 菜单首字母改为大写

assume cs:codesg,ds:datasg

datasg segment
        db '1.file    '
        db '2.edit    '
        db '3.search  '
        db '4.view    '
        db '5.options '
        db '6.help    '
datasg ends

codesg segment
  start:mov ax,datasg
        mov ds,ax
        mov bx,0
        mov cx,6
      s:mov al,[bx+2]
        and al,11011111b
        mov [bx+2],al
        add bx,10
        loop s
        nop
codesg ends

end start