Richard Adams wrote in a message to Mike Bilow:
RA> They are still supported, and will continue to be so for
RA> quite a while, cua devices were and are still call out
RA> devices, however you do have a point, BUT, reading the
RA> Seriel-HOWTO will give the impression that /dev/ttyS# is
RA> beter than /dev/cua#, which is one reason i said read it.
It is a myth that the "cua?" devices are for call-out and the "ttyS?" devices
are for call-in. In fact, they are simply different ways of accessing the same
ports from software, with "cua?" using older locking and other methods. There
are really no cases in which use of "cua?" devices is preferred, and both
call-out and call-in these days should be done with "ttyS?" devices unless you
are using ancient hardcoded software for serial transactions. Even the
"setserial" utility should be pointed at the newer "ttyS?" devices.
-- Mike
