mov di,offset s
mov si,offset s2
mov ax,cs:[si]
mov cs:[di],ax
s0:jmp short s
s1:mov ax,0
int 21h
mov ax,0
s2:jmp short s1
nop
code ends
end start
这是指令执行以前的样子
mov ax,4c00h
int 21h
int 3h
add [bx+si],al
jmp 0000h
mov di,0008h
mov si,0020h
mov ax,cs:[si]
mov cs:[di],ax
jmp 0008
mov ax,0000h
int 21h
mov ax,0000h
jmp 0018
nop
