Problems with ATMega328? (The one without the P?)

Hello Experts,

I am in a similar situation, after being given ATMEGA 328-PU chips to works with. I am trying to follow these instructions, but cannot find the avrdude.conf file. I am using macintosh computer, which might put me at a disadvantage :frowning: Does anyone know where the avrdude.comf file is on a mac install of arduino?