Please tell me what are the necessory fuse settings (that the avr not get blown) for SPI programming,
1. When operating on 12 Mhz external crystal.
2. When operating on 8 Mhz external crystal.
I was using M. Asim Khan's SPI Programmer,
I was very happy with that (actually i programmed none of the fuses). I was able to program/reprogram an avr again and again.
BUT SOME THING STRANGE HAPPENED :(
Now, the fresh avr is given correct signatures but when i program it once then it says "no uC detected." :'(
While the programmer says "no uC detected" but the avr functions (runs) exactly as what i had coded.