assume cs:code,ds:data

data segment

 msg db "hello world"

data ends 

code segment

start:

mov ax,data

mov ds,ax

mov bx,0b800h

mov es,bx

mov cx,11

mov si,0

mov bx,0

mov ah,01000010b

  s:mov al,ds:[si]

    mov es:[bx],al

    mov es:[bx+1], ah

    inc si

    add bx,2

    loop s

    mov ax,4c00h

    int 21h

code ends

     end start

运行结果：

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