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assume cs:code ds:data ss:stack
data segment
db 'welcome to masm!'
db 02h,24h,71h
data ends
stack segment
dw 8 dup(0)
stack ends
code segment
start: mov ax,data
mov ds,ax
mov ax,stack
mov ss,ax
mov sp,10h
xor bx,bx
mov ax,0b872h
mov cx,3
s3: push cx
push ax
push bx
mov es,ax
mov si,0
mov di,0
mov cx,10h
s1: mov al,ds:[si]
mov es:[di],al
inc si
add di,2
loop s1
mov di,1
pop bx
mov al,ds:10h[bx]
inc bx
mov cx,10h
s2: mov es:[di],al
add di,2
loop s2
pop ax
add ax,0ah
pop cx
loop s3
mov ax,4c00h
int 21h
code ends
end start
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