王爽汇编语言实验九输出问题提问

王爽汇编语言第三版的实验九，想知道哪句代码或者那些代码组合能够在屏幕上打印字符串

assume cs:code,ds:data,ss:stack 

data segment 
    db "welcome to masm!"
    db 02h,24h,71h
data ends 

stack segment 
    dw 8 dup(8)
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 ; es point to 12nd lines middle position of screen 
    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,
![img](10h https://img-mid.csdnimg.cn/release/static/image/mid/ask/999435374866142.jpg "#left")

 
 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

img