By the looks of it the early serial setup was part of the original m4a78-em port. This has been slightly altered to take into account the new superio device. I've check to the best of my knowledge that the address and data are correct for the superio. Is there anything specific that I can check for to make sure the early serial is correctly setup?
Thanks, Chris
You will need to make changes to romstage.c and enable the early_serial etc there.
Marc