原题:完成7.9中的程序
代码如下:
assume cs:codesg, ds:datasg, ss:stacksg
stacksg segment
db 0, 0, 0, 0, 0, 0, 0, 0
stacksg ends
datasg segment
db '1. dispaly '
db '2. brows '
db '3. replace '
db '4. modify '
datasg ends
codesg segment
start:
mov ax, datasg
mov ds, ax
mov ax, stacksg
mov ss, ax
mov sp, 10h
mov bx, 0
mov cx, 4
s:
push cx
mov di, 0
mov cx, 4
s0:
mov al, [bx + di + 3]
and al, 11011111b
mov [bx + di + 3], al
inc di
loop s0
add bx, 10h
pop cx
loop s
mov ax, 4c00H
int 21H
codesg ends
end start |
