assume cs:code code segment start: mov ax,cs mov ds,ax mov si,offset do0 mov ax,0 mov es,ax mov di,200h mov cx,offset do0end-offset do0 cld rep movsb mov word ptr es:[0*4],200h mov word ptr es:[0*4+2],0 mov ax,4c00h int 21h do0: jmp short do0start db "divide error!" do0start: mov ax,cs ;中断后cs为0,ip为200h mov ds,ax mov si,202h mov ax,0b800h mov es,ax mov di,12*160+33*2 mov cx,13 s: mov al,[si] mov es:[di],al inc si add di,2 loop s mov ax,4c00h int 21h do0end:nop code ends end start
运行程序,然后再运行下面程序可以看到运行结果:
assume cs:code code segment start: mov ax,1000h mov bh,1 div bh code ends end start