"Chris G. Demetriou" wrote:
> 
> scw@netbsd.org (Steve Woodford) writes:
> > Can this file be generated from the NetBSD source tree? Or is it something
> > which can only be built on a RiscPC?
> 
> "and, if the latter, why isn't a version checked in uuencoded, so that
> binary snapshots can be built w/o Magic?"  8-)

I believe it's a binary archive (.arc is a compression type on RISC OS) 
It contains the boot loader for RPC's.  I believe that it may not be up
to date as there is a RISC OS 4 compatible one around.

Chris