> I thought we wanted separate /dev/ttyXX and /dev/cuaXX devices
> instead.

I modified com.c (+ conf.c) to do this a few months ago and
sent out a message on one of the NetBSD mailing lists.  I
have not reintegrated my changes back into my NetBSD-current
sourc tree since Sep 21 but shouldn't be too hard.  They are
yours for asking.

Bakul Shah