Hung ttys on Sun

[Randy C. Lee]

Environment:  Sun 3/XX with SunOS 3.2

I have been trying to run xmodem that was passed around on the sources
list recently on our Suns.  To test I have been using the Sun as the
local system, connecting to our LAN using tip, logging into our local
Multics system, and starting xmodem on Multics to send a file.  To start
xmodem on the Sun I have tried using
    ~C xmodem rt start_up.ec

and suspending tip and doing
   xmodem rt start_up.ec << /dev/ttyb.

While the ~C does not hang the port, it also does not tranfer the file.
The suspend method definitely hangs the port and will not let go.  I
evenually disconnect (manually) because there is no response.  When I
login again to the Sun, I have a process <exiting> in the idle state
hanging around and trying to use tip again results in the message "all
ports busy".

Two questions:  What is the proper way to use xmodem with tip?  Is there
any way to get ttyb released without rebooting?  No form of kill -N
seems to toss it either from my ID or the root.

--Randy
  rclee at hi-multics.arpa
  ...!umn-cs!hi-csc!rclee