I picked up a (an?) usbasp from Ebay and I'm having problems getting it to program my Duemillinove. Linux recognizes it, and the permissions are set correctly but when I try and use avrdude I get an sck error every time. I have the usbasp plugged in to my PC, and the pins mapped to the ICSP header …

avrdude + usbasp = "cannot set sck period"

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