ucom and sio

[Brandon Fosdick]

Judging from the man page, ucom is limited to acting like a tty with no
support for sio. Is this true? Is there some magic config bit somewhere
that will enable hidden sio support?

I have some old software that talks to some old hardware over rs232 (using
cuaa) and the builtin 232 port just died. I'm trying to get a Bafo BF-810
working in raw mode but haven't had much luck (open()'s and write()'s
block, unless non-blocking is set, but then they return without doing
anything).

Any suggestions?

Thanks