Wouldn't it be EASIER to just design a circuit to do the job, rather than
trying to trace theirs?
It is NOT that complicated!
The existing FDC deals with drive select, seeking to track, etc.
Then the add-on board (such as option board, Apple Turnover, Catweasel,
etc.) takes the pulses on the data line and stores them as bits. The rest
is software.
But buying an option board is less work than building one.
Option board v "Deluxe" option board:
I asked Brown of Central Point about programming data for the option
board, for adding support of it into XenoCopy (didn't happen). He asked
me about reading Mac 400k/800K disk with it. I told him, that until I
studied it (and hopefully got tech data from him), that I couldn't be
sure, but that I didn't think that the option board could handle a wide
enough range of data transfer rates. That was then, apparently, the
primary design goal of the "deluxe".
There are a few websites with some info on the board; there might even be
one with the amount of programming info that they would let developers
have.
--
Fred Cisin cisin_at_xenosoft.com
XenoSoft http://www.xenosoft.com
PO Box 1236 (510) 558-9366
Berkeley, CA 94701-1236
On Sat, 29 Jun 2002, Philip Pemberton wrote:
> "Al Kossow" <aek_at_spies.com> said:
> > High resolution scans of both deluxe and non-deluxe boards will
> > be up at www.spies.com/aek/c2opt for the next week or so, for
> > the curious.
> Well, that's enough to get the bottom layer into EAGLE or Autotrax, along
> with all the components. The top layer tracks might be a bit of a problem
> though...
> I can try anyway, but unless someone can probe the tracks that are going
> under ICs on a "live" TTL-only "Transcopy" (CopyIIPC) Option Board, this
> project of mine may as well be dumped now :-/
> I don't mind a challenge, though :-)
>
> Thanks.
> --
> Phil.
> philpem_at_dsl.pipex.com
> http://www.philpem.dsl.pipex.com/
Received on Sat Jun 29 2002 - 13:34:52 BST