On Wed 29 Sep, Chris G. Demetriou wrote:
> netbsd@precedence.co.uk writes:
> > N.B. On a non-Acorn CDROM, the behaviour is entirely backward compatible;
> > the Acorn enhancments are ignored if the system dependent area is not
> > exactly 32 bytes long and doesn't begin with the 10 characters ARCHIMEDES
> > (non-terminated).
> 
> If these changes are truly "safe" on non-Acorn CD-ROMs, then they
> should probably be enabled by default, just like Rockridge extensions,
> and disabled via a flag.

I entirely agree. The extra translation does the above two checks before
doing anything else and it's unlikely that the ARCHIMEDES magic string
will appear on other CDs.

I thought I'd err on the side of safety. Plus, I remember Wolfgang Solfrank
having the following to say back on 23/3/98, though I think he misunderstood
the issues: 

> Hmm, does this really mean what I read into it?  Namely that you are
> munging the filename as read from the CD in order to accomodate some
> broken software that doesn't supply the correct filenames as recorded
> on the disk?  If so, such a hack is definitly NOT going into the NetBSD
> cd9660 support (as long as I can help it anyway).

> Something I might consider (albeit I'm still pretty sure that I'd get
> ache in my stomach implementing it) is using a filesystem layer to
> translate names.  Note that this is just an idea that occured to me,
> haven't thought about it too much yet.

Problem is that ! isn't a valid ISO character and filenames beginning
with ! are very important to RISCOS. Also, filetype is not determined 
by the filename extension. Filetypes are also very important to RISCOS.

-- 
Dr. Stephen Borrill, Director and Principal Engineer
Precedence Technologies Ltd             Tel: +44 (0) 1223 562 500
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