汇编实验6（王爽）

assume cs:code,ds:data,ss:stack

stack segment
	dw 0,0,0,0,0,0,0,0
stack ends

data segment
	db ‘1. display      ‘
	db ‘2. brows        ‘
	db ‘3. replace      ‘
	db ‘4. modify       ‘
data ends

code segment
start: mov ax,data
       mov ds,ax
       mov ax,stack
       mov ss,ax
       mov sp,10h
       mov bx,0
       mov cx,4
     s:push cx
       mov si,0
       mov cx,4
    s0:mov al,3[bx+si]
       and al,11011111b
       mov 3[bx+si],al
       inc si
       loop s0

       add bx,16
       pop cx
       loop s

       mov ax,4c00h
       int 21h
code ends
end start