As I said, you can make one from a 555 chip. Or, find a suitable oscillator module or buy one if necessary. You’ll find more details on the AVR Freaks forum.
tried it with an 17Mhz crystal got it to be recognized 2 times but hadnt flashed it. today i wanted to flash the atmega8 but it will not be recognized.
is it possible that i have killed my atmega with the one Mhz more frequency? or that i killed my parallel port with a short circuit?
sorry i had blackout^^i meant a oscillator dont know why i wrote crystal.
its an 17Mhz oscillator which i connected to my atmega8 to the xtal1 (pin 9) and to pin 7 vcc and 8 GND.
i assume that its the right pinout and i used a 100µF capacitor so that it should run the atmega at 17Mhz but dont know if i made a mistake and produced a short cut or something.
i meassured the voltage and could it be a problem that the chip gets only 3.6V from the parallel port?
and thats the reason why it wont run with 17Mhz?
sorry for my bad english im from germany.
and its really difficult to ask something which you dont know ( i cant find the right words^^)