AVR-Chat

No I don't use buffer for stk200/300
I just use the simplest circuit for it.
sck ====>  pin6 of lpt
mosi ===>  pin7 of lpt
and ...
I am having this problem even when I open bascom.also I face to that problem when I choose stk from programmer type menu.
I have used this programmer for a long time without any problem but since I reinstalled my windows (because of some viruses) 
I can't program my chip any more.
it is worth mentioning that sometimes (accidentally) it works. for example today  I could program my chip just once. 
thanks a lot 
A.GH

       
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