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RE: [oc] Floppy disk controller inside schematics wanted !
I would like to see VHDL cores for the Western Digital WD177x,179x and
279x series of FDC's. Anyone know of any....?
----- Original Message -----
From: "Paul McFeeters" <paul.mcfeeters@n... >
To: <cores@o... >
Date: Fri, 7 Dec 2001 16:22:17 -0000
Subject: RE: [oc] Floppy disk controller inside schematics wanted !
>
>
> Jean,
>
> if you post the web address for the FDC details you get then
> anybody who
> wishes to help out can look at them. That way you may get some of
> the best
> VHDL brains around help you with your problem. Isn't that why
> opencores is
> here? So we can help each other out?
>
> Paul McFeeters
>
> -----Original Message-----
> From: owner-cores@o...
> [mailto:owner-cores@o... ]On
> Behalf Of Jean Masson
> Sent: 07 December 2001 12:30
> To: cores@o...
> Subject: Re: [oc] Floppy disk controller inside schematics wanted !
>
>
> Hello Rob,
>
> Thank you for your help. I have found some informations of inside
> of floppy
> controller, in 2
> applications
> notes of National Semiconductors and a data sheet from Intel. This
> is mainly
> block diagrams, but
> they are
> helpful for understanding process and for comportemental VHDL
> synthesis.
> With more detailed
> schematics,
> one could hope to do structural or data flow architectures. The
> ideal should
> be finding of a
> lecture book
> with 'theory' of FDC and inside schematics.
>
> Basicaly, FDC is a serial-parallel-serial unit. Building blocks for
> serial-parallel and reverse are
> given by Triscend
> dev pack. Problem remains with stuffs like data separator and clock
> extraction, wich are not
> trivial things.
>
> This is a shame that simple FDC are discontinued by industry. Combi
> chips
> are too complex to
> implement with
> a 8051 core, wich need only one floppy interface. Worst, they are
> SMD
> components, wich is
> problematic for
> institutions without industrial soldering equipment. I think not to
> be the
> only guy in universe in
> search of an answer
> for lack of simple FDC chips available.
>
> I use a Triscend E5 CSoC card produced by Xess, an interesting and
> proteiform concept. Principle of
> do-it-yourself
> interfaces for a microcontroller is one of the few good ideas of
> last years.
>
> My e-mail adress is :
>
> jean.masson@l...
>
> Best regards,
>
> Jean MASSON
>
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