Date   : Thu, 17 Sep 2009 13:58:27 +0100
From   : mu.list@... (Mark Usher)
Subject: ADFS disk images

ADF was also sometimes used for filestore disc images, which we have no
support for.

-Mark

> -----Original Message-----
> From: bbc-micro-bounces+mu.list=aon.at@... [mailto:bbc-
> micro-bounces+mu.list=aon.at@...] On Behalf Of Rob
> Sent: 17 September 2009 13:10
> To: me@...
> Cc: BBC micro mailing list
> Subject: Re: [BBC-Micro] ADFS disk images
> 
> On 17/09/2009, me@... <me@...> wrote:
> > Am I correct in thinking that ADL is the standard file extension for
> > ADFS images?
> 
> Or ADF ..
> 
> >
> > Is there such a thing as an interlaced ADFS disk image? If so, what
> > extension would it have? (I'm thinking of the difference between SSD
> > and DSD for DFS disk images.)
> 
> The standard ADFS disc image formats are indeed interleaved, so
> sectors appear in the file in the order they are usually used by ADFS.
>  (Unlike DSD images, where DFS would normally use all of drive 0 then
> all of drive 2 ..)
> 
> GoMMC, on the other hand, deals with non-interleaved images, (all of
> head 0, then all of head 1) so whilst you can take a single sided disc
> image file off it and rename it as an SSD, and get it to work in an
> emulator, you can't do that for any larger image taken from it.
> 
> JW has amended later versions of DFS & ADFS Explorer with an
> "Interleaved disc" flag option to allow use of either sort of image
> (and the ability to drag files between separate instances, in order to
> convert them.)
> 
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