[求助] 王爽汇编.内中断
;(1)编写可以显示"overflow!"的中断处理程序:do0;;(2)将do0送入内存0000:0200处
;(3)将do0的入口地址0000:0200存储在中断向量表0号表项中.
assume cs:code
code segment
start: mov ax,code
mov ds,ax
mov si,offset do0
mov ax,0
mov es,ax
mov di,200H
mov cx,offset do-offset do0
cld
rep movsb
mov word ptr es:[0*4],200H
mov word ptr es:[0*4+2],0
do0: jmp short do
db 'overflow!'
do0start:
mov ax,cs
mov ds,ax
mov si,202H
mov ax,0b800H
mov es,ax
mov di,12*160+36*2
mov cx,9
s: mov al,[si]
mov es:[di],al
inc si
add di,2
loop s
mov ax,4c00H
int 21H
do: nop
code ends
end start
用MASM6.0编译..然后用CMD里面的CALL命令来运行.
发现do0这段代码怎么都装不进0:200内存中..
