From mboxrd@z Thu Jan  1 00:00:00 1970
From: ron@ronnatalie.com (Ron Natalie)
Date: Mon, 5 Jun 2017 12:33:22 -0400
Subject: [TUHS] 211bsd: kernel panic after a 'here document' in tcsh
In-Reply-To: <20170605161649.GL21406@yeono.kjorling.se>
References: <c5345a44-82e9-7aca-a754-6b09c73e9c44@retro11.de>
 <20170605161649.GL21406@yeono.kjorling.se>
Message-ID: <014101d2de19$7385e870$5a91b950$@ronnatalie.com>

Trap type 0 is bus error.    The two causes of this are either addressing memory location that does not respond (as opposed to being umapped) or an word operation on an odd address.

Since you have a cpuerr print out you have a 44/45/70 CPU.  The 020 value indicates that it was the bus timeout case.

Something touched memory that was mapped in but didn't physically exist.