assume cs:code
code segment
start:
mov ax,2000h;準備工作
mov ds,ax
mov bx,1000h
mov ax,00BEh
mov [bx],ax
mov ax,0006h
mov [bx+2],ax

mov ax,2000h;書中實驗的代碼
mov ds,ax
mov bx,1000h
mov si,0
mov ax,[bx+si]
inc si
mov cx,[bx+si]
inc si
mov di,si
add cx,[bx+di]

mov ax,4c00h
int 21h
code ends
end start