Can anyone make helpful suggestion?

[Andrzej Pindor]

I am trying to debug a C program on a Sun 3/60 using dbxtool. I keep getting
these strange messages:

Reading symbolic information...
Read 1177 symbols
program terminated by signal BUS (hardware error)
(dbxtool) 

(dbxtool) cont 
signal SEGV (no mapping at the fault address) in init_draw at line 489 in file "tile1.c"
(dbxtool) 

Can anyone please suggest either what causes the problem or how to look for
the cause?
If this is an inappropriate group for my query, please direct me to a more
suitable one.

Thanks in advance
-- 
Andrzej Pindor
University of Toronto
Computing Services
pindor at gpu.utcs.utoronto.ca