There is also a crystal socket on STK504 where you can place a crystal. This is

to enable high-frequency crystals (>8MHz) to be used. Because of long wires

and large capacitances on the clock nets on STK500, you should put your HF

crystal on STK504 and not in the socket on STK500.

Fuse settings

To use the different clock options, the AVR's programmable fuses must be set

right. Consult the AVR's datasheet and the STK500 programming section on how

to set the appropriate fuses.

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