AVR-Chat

At 01:21 PM 7/18/2005, Amir Rahafrooz wrote:
>Dear everybody!
>I have some problem with ATmega64.when I set its Fuse_bits to use an
>external cristal(7.32 MHz)as system clock, it goes wrong and I can't
>reprogram it through ISP any more.can anyone help me?
>thanks!

First, have you set the fuse for CKOPT?
Second, you realize that your AVRISP clock can only be a max of 1/4 
the crystal freq?
I hope your program is VERY small, because loading on that crystal 
will be VERY slow.