Date   : Fri, 21 Jul 2006 09:06:14 +0100
From   : Sprow <info@...>
Subject: Re: Turning dsd. and ssd. disk images to usable DFS/ADFS with DOSFS

In article <060720015517@...>,
   Jonathan Graham Harston <jgh@...> wrote:
> >Message-ID: <OF93D0C081.3E722E52-ON802571AF.0033AEC6-802571AF.
>  
> > Jules Richardson wrote:
> > >
> > > OK, what are my options here?
>  
> Steve.Lancaster@... wrote:
> > I have tried downloading the disktools from mdfs.net and have transferred
> > them to floppy. The BBC recognises these on the floppy but I do not know
> > how to turn the images into usable DFS/ADFS files. The BBC can LIST the
>  
> At http://mdfs.net/Apps/DiskTools

Ah - despite their promising looking naming I'd not actually looked in the
programs to see they use XADFS_SectorOp type SYS calls, which wont work on a
BBC Master.

I've knocked up a quick program, currently at 
 http://www.sprow.co.uk/bbc/imgtodfs.zip
until I think of somewhere else to put it.

It takes an SSD or DSD image from any filing system and writes it out to a
DFS disc. Note it currently only works on a BBC Master as it relies on the
filing system manager to swap back to the source filing system when the next
OSGBPB call is made.

It likes memory - the more memory you have the fewer disc swaps you'll have
to make (or just get two drives!). Running it on a coprocessor will help
here, the 16MB on my ARM coprocessor means you can load the whole image in
one shot.

If I feel inspired I might even make it handle ADFS writing too, by changing
the OSWord call near the end of the program.

Let me know if that helps,
Sprow.