#Serial Boards
Dave,
My _guess_ would be that there'd be more to it than just putting in a
faster CPU. I've wondered about the same thing (hacking it with a faster
CPU) before, and dismissed it for the reason you mentioned. There's not
enough information supplied with the board to enable one to write a new
driver for it.
The board would support the baud rate well enough when not under load.
The question would be when you'd hit the upper limit of its capabilities,
and what would happen to your system at that point. Output data probably
wouldn't be a problem, since you'd just have additional time between
bytes. Where I'd expect the problem would be in losing input data.
Probably the only way to be certain would be to try one out, but if it
doesn't do what you need out of the box, I'm not at all certain that
anything could be effectively done to it to make it work for you.
David