I'm having problems with ttyC1 on a DEC Alpha Station 500 / 333:

When I do an:

echo Hello > /dev/ttyC1

the command locks up.  Generally I cannot interrupt it with ^c, ^z, or
^\.  Sometimes it will core dump to tcsh.core.

If I do this within /bin/sh, the interrput works, and gives:

connot create /dev/ttyC1: interrupted.

Note that:

echo Hello > /dev/ttyC0

works as expected.

This is with the 3.0_BETA GENERIC kernel.  I don't know if this worked
in prior versions of NetBSD.

Also, when it is stuck, the "echo" command never shows up in a process
list.  So can't kill it!