Hey ![Smile :)]()
I have no experience with the A variant of the 2313 but I did a few things on the ATTiny2313 (without A).
Just had a look at http://www.atmel.com/images/doc8261.pdf which outlines the differences between the two and judging from that it should just run right out of the box. Did you try?
Good luck!

I have no experience with the A variant of the 2313 but I did a few things on the ATTiny2313 (without A).
Just had a look at http://www.atmel.com/images/doc8261.pdf which outlines the differences between the two and judging from that it should just run right out of the box. Did you try?
Good luck!