AVR-Chat

>>
 >> The problem is that your 7805 isn't protected against "back feeding."
 >> Its trying to regulate its output which is being driven higher than its
 >> unpowered input by your ISP cable.
 >> 

>  I've been using the Altera Byteblaster to program Altera CPLD's.  The
>  Byteblaster I use has no power source in itself and gets its power from
>  the board it's programming.

>  It could very well be latch-up.

Thanks to all for quick help!
I think it is time to buy new ISP-programmer like PonyProg or
somethink like this.

-- 

  Valerij Avrealij