[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: FS: Deluxe Option Board,Central Point



Ed,

    I understand now.  If it is only magnetic transisiton to be duplicated
on PC floppy drive through Deluxe Option Board, I am positive sure that it
will never boot on Apple II's Disk II floppy drive.  GCR encoding appears to
be invalid.  I have no idea why PC software can't read Apple II software
diskette on PC floppy drive through Deluxe Option Board.  Your answer may be
correct that it has no intention by reading bit by bit, but only magnetic
transisiton.
    The conclusion states to drop Deluxe Option Board because it is not the
solution for Apple II software for duplication.

-- 
Bryan Parkoff
"Ed Eastman" <ed@apple2.com> wrote in message
3FF9A738.3010604@apple2.com">news:3FF9A738.3010604@apple2.com...
> The board takes control of the drive in a way not possible via the
> standard floppy controler in a PC.  The option board monitors the heads
> to look for transisitons from one polarity to another.  The software
> then records every magnetic transisiton on the source media and writes
> the same transisitons to the destination media.
>
> It does not rely on any specific encoding, length of bit or anything.
> The timing I believe is done via the 'index hole' to determine when it
> has read an entire revolution of the disks and has therefore captured
> all the magnetic transisitons.
>
> As it doesn't look at the 'bits' at all, it can't misinterpret them,
> CGR, MFM, or whatever, it's just a magnetic transition.  Think of it as
> a making a mold of a sculpture.  You don't have to know what it is to
> replicate it.
>
> :)
>
> Bryan Parkoff wrote:
> >     Please tell me how can you copy Apple II software diskettes in PC
floppy
> > drives using Deluxe Option Board, but I doubt.
>