Re: .nib Images to real Apple disks

[Toinet <antoine.vignau@laposte.net>]

On 9 avr, 21:47, AppleCPM <a...@wilserv.com> wrote:
> Hi!
> Hi!
>
> On Apr 9, 2:17 pm, Michael wrote:
>
> > Willi, Antoine was asking what the name of the *disk* was, not the
> > name of a (nonexistent) program to convert .nib's to disks.
>
>     The image file that I want to convert to a real disk is
> "FORT2.NIB".  The funny thing is that this image file is one I created
> using SST and uploaded to Asimov a loooong time ago.  Now, I can't
> find the original disk.
>
> > Is there some reason that you want to preserve the non-standard format?
> > It would probably be fairly easy to modify the disks DOS (which Antoine
> > was asking about) to accept standard formatting, resulting in an easily
> > archivable and copyable disk.
>
>     The non-standard format is required by the Fortran compiler.
> That's how they implemented copy-protection.
>
> > If the .nib is usable, then such a deprotection should be doable.  If it
> > is not, then it is almost certain that the .nib does not contain enough
> > info to create a usable disk.
>
>     The '.NIB' image file IS usable.  The file format is UCSD Pascal
> and the Fortran compiler is interpreted UCSD Pascal P-code.
> Deprotecting it would be an interesting challenge.
>
> > It is also not too difficult to create a disk with non-standard format,
> > though the motivation for doing so is hard to fathom.  ;-)
>
>     "hard to fathom"?  All I want is a disk that is a duplicate of the
> one I can't find.
>
> Willi

i've never seen any difficult pascal on-disk protections, they are
either using change of markers (e. g. gato) or test of the write
protect tab (e. g. wizardry)

you cannot decently manage disk accesses with pcode, it is a matter of
timing, please send the nib file, i will probably be able to create a
std disk image and a protected floppy image (unless it is a totally
unknown a2 protection scheme but let me doubt but i'm curious)

antoine