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Date   : Wed, 10 Dec 2008 20:03:00 -0000
From   : christopher.whytehead@... (chris whytehead)
Subject: Acorn Atom disk controler

> > Phill Harvey-Smith wrote:
> > > Hi,
> > >
> > > Does any of you happen to have the circuit diagram for the
> Atom floppy
> > > controler ?
> >
> > Try this one:
> >
> > www.classiccmp.org/acornia/tmp/6.tif
> >
> > .. it's the System one, but AFAIK Acorn just used it as-is for
> the Atom. (I
>
> > do have a kosher Atom schematic, too, but I'm not sure if I have that
> scanned
> > and here with me - I'll keep looking)
>
> Here's one that is explicitly marked as being for the 'Atom Disc Pack FDC
> Card':
> http://www.stairwaytohell.com/temporary/atom_pcb_fdc.gif
>
> ... though it's not as clear (nor as recent) as the scan Jules provided.
>
There is a circuit diagram in the Atom Disc Pack Manual:
http://acorn.chriswhy.co.uk/docs/Acorn/Tech/Acorn_Atom_Disc_Pack.pdf

There are some nice pictures of the Atom Disc Pack, including an hires
picture of the FDC which may help:
http://acorn.chriswhy.co.uk/Computers/AtomDiscPack.html

HTH
Chris
--
How does a project get to be a year late?... One day at a time.
Chris's Acorns    http://acorn.chriswhy.co.uk
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