CPU transplant - serial playing games

Folks,

I replaced the CPU in a Freeduino 1.16 with a 328. After some fiddling, I can upload sketches to it (so I didn't break it.)

But if I try serial communication, Baud rate is double the expected one.

Any hints?

Just a wild guess, but the UCSRA register has a bit which, when set, doubles the baud rate.

Any chance this bit is set?

Thanks for the hint - will check!