Information on floppy disk formats needed - PC can read every floppy disk
Spider plant breeding program
Tobias Haustein <haus...@nostlgic.tng.oche.de> writes:
> If you have information on any floppy disk format or file system, or if
> you have some old floppy disks, or 3" or 8" floppy disk drives with
> shugart bus, I'd like to "talk" to you. Please mail me at:
>
> haus...@nostalgic.oche.de
Take a look at
http://www.comlab.ox.ac.uk/oucl/users/robin.watts/Docs/Arc/ADFS/EFormat.html
for details of Acorn disc format - there are other documents nearby
(cc'd)
Nick
--
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James MacDonald
In article <3470DF...@nostlgic.tng.oche.de>, Tobias Haustein
<haus...@nostlgic.tng.oche.de> scribbled :
>Hi Folks,
>
>I'm writing the software for the Catweasel Controller. This controller
>is capable of reading every floppy disk using standard PC disk drives.
>At the current state of developement, the software can read this disk
>formats:
>
> Mac DD
To read a Mac DD floppy, you've gotta have a drive that can vary its
speed, and a 'standard' PC floppy drive just doesn't cut it.
What is a Catweasel FDC Controller anyway? :)
--
James MacDonald
Adrian Jackson
James MacDonald wrote:
> To read a Mac DD floppy, you've gotta have a drive that can vary its
> speed, and a 'standard' PC floppy drive just doesn't cut it.
> What is a Catweasel FDC Controller anyway? :)
You should be able to find out more at:
http://www.rat.de/apd/catweasl.htm
Adrian
Theo Markettos
In article <IbAQiCAN...@netbook.demon.co.uk>,
tr...@netbook.demon.co.uk (James MacDonald) wrote:
> In article <3470DF...@nostlgic.tng.oche.de>, Tobias Haustein
> <haus...@nostlgic.tng.oche.de> scribbled :
> >Hi Folks,
> >
> >I'm writing the software for the Catweasel Controller. This controller
> >is capable of reading every floppy disk using standard PC disk drives.
> >At the current state of developement, the software can read this disk
> >formats:
> >
> > Mac DD
> To read a Mac DD floppy, you've gotta have a drive that can vary its
> speed, and a 'standard' PC floppy drive just doesn't cut it.
That's if you use a standard blinkered approach. The alternative, which the
Catweasel does, is to use a PC drive, but redesign the floppy controller so
it can handle almost any data rate. After all, all a PC floppy drive is is a
almost totally unintelligent set of stepper motors and some signal
amplifiers.
--
Theo Markettos Home: theoma...@letterbox.com
Liphook Work: mark...@prl.research.philips.com
Hampshire
UK Web site, including HardBack pages
http://www.marketto.demon.co.uk/
Roger Gammans
In article <19971129....@marketto.demon.co.uk>, Theo Markettos
<th...@marketto.demon.co.uk> writes
>In article <IbAQiCAN...@netbook.demon.co.uk>,
> tr...@netbook.demon.co.uk (James MacDonald) wrote:
>
>> In article <3470DF...@nostlgic.tng.oche.de>, Tobias Haustein
>> <haus...@nostlgic.tng.oche.de> scribbled :
>> >Hi Folks,
>> >
>> >I'm writing the software for the Catweasel Controller. This controller
>> >is capable of reading every floppy disk using standard PC disk drives.
>> >At the current state of developement, the software can read this disk
>> >formats:
>> >
>> > Mac DD
>> To read a Mac DD floppy, you've gotta have a drive that can vary its
>> speed, and a 'standard' PC floppy drive just doesn't cut it.
>
>That's if you use a standard blinkered approach. The alternative, which the
>Catweasel does, is to use a PC drive, but redesign the floppy controller so
>it can handle almost any data rate. After all, all a PC floppy drive is is a
>almost totally unintelligent set of stepper motors and some signal
>amplifiers.
disk at a constant rate.
Of course, if its the data discrimator you've redesigned good luck to
you. That way you've got a chance of it working. And on amiga floppies
too.(Which are admittly easier).
I missed the orginal post. But I have some Mac DD disks and some small
documentation on them (inside Mac I-3). If that's what you're looking
for. (But I have no way to copy the disks).
--
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* Roger G. Gammans - The er *
* Engineer & Director of The Computer Surgery - ut *
* e-mail: rgam...@computer-surgery.co.uk - mp *
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