程序代码：

assume cs:code
code segment
start:
    mov ah,00h
    mov al,12h
    int 10h
    
    mov dh,0h
    mov dl,0h
    mov ah,2h
    mov bh,0h
    int 10h
    
    mov ah,0ch
    mov dx,100h
    mov cx,100h 
    mov al,12h
    int 10h
    
    mov ah,4ch
    int 21h
code ends
end