assume cs:code
code segment
;传送编写的中断处理程序数据
start: mov ax,cs
mov ds,ax
mov si,offset dot
mov ax,0
mov es,ax
mov di,200h
mov cx,offset dotend-offset dot
cld
rep movsb
;设置中断向量
mov ax,0
mov es,ax
mov word ptr es:[0],200h
mov word ptr es:[2],0
mov ax,4c00h
int 21h
;编写0号中断处理程序
dot: jmp short dot1
db "divide error!"
dot1: mov ax,cs
mov ds,ax
mov si,202h
mov ax,0b800h
mov es,ax
mov di,160*21+36+2
mov cx,13
s: mov al,[si]
mov es:[di],al
inc si
add di,2
loop s
mov ax,4c00h
int 21h
dotend: nop
code ends
end start