Path: utzoo!utgpu!attcan!uunet!mcvax!cernvax!achille
From: achille@cernvax.UUCP (achille)
Newsgroups: comp.sys.apollo
Subject: Re: DSP-90 Break v. ^Q Problem
Message-ID: <795@cernvax.UUCP>
Date: 11 Aug 88 23:32:10 GMT
References: <5400030@iuvax>
Reply-To: achille@cernvax.UUCP ()
Organization: CERN European Laboratory for Particle Physics, CH-1211 Geneva, Switzerland
Lines: 16


We too noticed the problem of the break putting the node in Phase II
shell. The only explanation I could find is that if you send 2 (or more)
breaks to a program, the first kills the program and the following the spm
(don't forget that spm is listening on sio1 !).
I dumped /sys/spm/spm and found an switch in it, '-no_stdin[]', that should
prevent the spm from listening on /dev/sio.spm, just I don't know how
give the option to the spm.
Another possibility is to delete the /dev/sio.spm link and create an
empty file with that name; then the spm will not go out on sio1 and the
break problem should disappear.
We used a different solution: we put a switch on the terminal output wire !
If you want to type something on the terminal, you have to switch it on
before; hopefully this will remind people that extra care is needed.

Achille Petrilli, Cray Operations