Attache Disks

From: Don Maslin <>
Date: Fri Aug 29 18:12:00 2003

On Fri, 29 Aug 2003, Fred Cisin wrote:

> On Thu, 28 Aug 2003, Joe wrote:
> > >There was also a 720K 5.25" 96TPI (80 track per side) option.
> > Do you know what you have to do to use the 96TPI drives in the Attache?
> I don't know. But it was a supported option from Otrona.
> It would require software changes: either be a different
> boot (system) disk, different ROM, or both.
> But, IIRC, the MS-DOS option involved a daughter board with
> an 808x co-processor.

There are several references to 96 tpi drives/disks in the BIOS
source code and the FORMAT source. At a quick glance, it seems
that it might be possible to patch the ondisk binary.

                                                - don

> If you can find drives that will physically fit,
> they'll hook up to the same cables and controller.
> Canon made a really nice 2/3 height DOUBLE drive.
> The guy who has 3.5" drives in his would need, or have,
> exactly the same software changes. Except for connectors,
> 3.5" 720K drives would use the same software as 5.25" 720K drives,
> and are almost impossible to differentiate in software.
Received on Fri Aug 29 2003 - 18:12:00 BST

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