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assume cs:code,ds:datadata segment
db 'Welcome to masm!',0
data ends
code segment
start: mov dh,0cH
mov dl,20H
mov cl,02H
mov ax,data
mov ds,ax
mov si,0H
call show_str
mov ax,4c00H
int 21H
show_str: mov ax,0b800H
mov es,ax
mov al,0a0H
mul dh
mov di,ax
mov al,02H
mul dl
mov bx,ax
mov al,cl
mov ch,0H
s0:mov cl,
jcxz s1
mov es:,cl
mov es:01H,al
inc si
add bx,02H
jmp short s0
s1:ret
code ends
end start
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