I2C

Hi
I used MightyCore to program atmega with arduino ide

I checked I2C connection in Atmega32,arduino nano

everything goes right..

pin is Bubuino

A4 ->PC1

A5 ->PC0

But in Atmega16A , arduino

it goes Wrong...

I guess that it might be a bug in mightycore for atmega16

Please explain what you mean by "it goes wrong".