assume cs:code
stack segment
db 256 dup(0)
stack ends
code segment
start: mov ax,stack
mov ss,ax
mov sp,256
push cs
pop ds
mov si,offset int9
mov ax,0
mov es,ax
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:[4*9],204h
mov word ptr es:[4*9+2],0
sti
mov ax,4c00h
int 21h
int9: push ax
push si
push di
push es
push ds
push cx
in al,60h
pushf
call dword ptr cs:[200h]
mov ax,0b800h
mov ds,ax
mov ax,2000h
mov es,ax
mov si,0
mov di,0
cmp al,3dh
jne ok1
mov cx,2000
cld
rep movsw
ok1: cmp al,42h
jne int9ret
mov di,0
mov cx,2000
ok: mov ax,es:[di]
mov [di],ax
mov byte ptr [di+1],02h
add di,2
loop ok
int9ret: pop cx
pop ds
pop es
pop di
pop si
pop ax
iret
int9end:nop
code ends
end start
我的程序却得不到我想要截屏 和屏幕返回的效果。。。 |
