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Re: EDD + CARD

Hi,



I'm on the way to finish a Nixie clock using a PIC microcontroller and was
thinking about doing an interface to grab the disk signal.

The idea is to use a PIC running at 20 MHz (or more) to decode the data from
the floppy and store the raw bytes into Ram.

We work done in the state machine with the Prom and the shift register will
be done by software.

This way you can store the full 40 tracks in memory 256 KB.

Then with a serial link you can move the data from and to the Ram from any
PC.

Change of track is not a challenge using the 4 phase lines.

My idea is to be able to grab a whole disk and also replay it. The tricky
part would be to find correct bit length of the track to wrap around each
'revolution'.



The hardware is quite simple: a Pic, a 16 bits counter for the ram addresses
bus, static ram and a level converter for the serial link.



Any volunteer to help me? Any suggestion is greatly welcome :))



By the way, do you have any idea if this would be of any interest the
Apple ][ freaks ?






"Matthew Russotto" <russotto@grace.speakeasy.net> a �crit dans le message de
news: ukj3efota9qb9a@corp.supernews.com...
> In article <ai9d97$jci$1@venus.itns.co.za>,
> Stephen Shaw  <bottrawler@junkbuster.zzn.com> wrote:
> >
> >Ok. if the above is the case then it is quite easy to back door into the
data
> >stream with an RS232 converter to a PC/Mac/Linux box and read the binary
data,
> >sort out what copy protection is being used and nullify it.
>
> If you can figure out how to get to the data stream with a PC at all,
> you'd probably make a lot of people happy.
> --
> Matthew T. Russotto                                mrussotto@speakeasy.net
> =====
> Every time you buy a CD, a programmer is kicked in the teeth.
> Every time you buy or rent a DVD, a programmer is kicked where it counts.
> Every time they kick a programmer, 1000 users are kicked too, and harder.
> A proposed US law called the CBDTPA would ban the PC as we know it.
> This is not a joke, not an exaggeration.  This is real.
> http://www.cryptome.org/broadbandits.htm