第15章 外中断
assume cs:code
stack segment
db 128 dup (0)
stack ends
code segment
start: ;mov ax,stack
;mov ss,ax
push stack
pop ss
mov sp,128
push cs
pop ds
mov ax,0
mov es,ax
mov si,offset int9
mov di,204h
mov cx,offset int9end-offset int9
cld
rep movsb
push es:[9*4]
pop es:[200h]
push es:[9*4+2]
pop es:[202h]
cli
mov word ptr es:[9*4],204h
mov word ptr es:[9*4+2],0
sti
mov ax,4c00h
int 21h
int9: push ax
push bx
push cx
push es
in al,60h
pushf
call dword ptr cs:[200h]
cmp al,9eh
jne int9ret
mov ah,2
mov bh,0
mov dh,0
mov dl,0
int 10h
mov ah,9
mov al,'A'
mov bl,2
mov bh,0
mov cx,0f9fh
int 10h
int9ret:pop es
pop cx
pop bx
pop ax
iret
int9end:nop
code ends
end start
文章来源: dujiahei.blog.csdn.net,作者:dujiahei,版权归原作者所有,如需转载,请联系作者。
原文链接:dujiahei.blog.csdn.net/article/details/45920725
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