实验6答案

开机中。。。

assume cs:codesg,ds:datasg,ss:stacksg '实验6

datasg segment

db '1. display......'
db '2. brows........'
db '3. replace......'
db '4. modify.......'

datasg ends

stacksg segment

dw 0,0,0,0,0,0,0,0

stacksg ends

codesg segment

start:mov ax,stacksg
mov ss,ax
mov sp,16

mov ax,datasg
mov ds,ax
mov bx,0

mov cx,4

s0:push cx
mov si,0
mov cx,4

s: mov al,[bx+3+si]
and al,11011111b
mov [bx+3+si],al

inc si
loop s

add bx,16
pop cx
loop s0

mov ax,4c00h
int 21h

codesg ends

end start