Re: Brutal Deluxe's holidays project 3: EDD/SST and NIB images

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

On 12 août, 02:40, Nick Westgate <nick.westg...@gmail.com> wrote:
> On Aug 12, 5:35 am, Toinet <antoine.vig...@laposte.net> wrote:
>
> > Third project of Brutal Deluxe during the summer holidays for the
> > Apple IIs: EDD/SST and NIB images.
>
> Fantastic news! Question: How long are your holidays!? ;-)
>
Too short ;-) I have worked on a huge business project which prevented
me from taking holidays before, so I have had a lot of days to
take ;-)

> > The options:
>
> > - Use a similar NIB format as SST.
>
> It would be nice to have this.
>
Jean-Marc Boutillon told me that SST creates two disks of a complete
diskette and that Ciderpress removes 512 bytes of each track when it
gathers the two images in one NIB file. That is quite weird!

> >   I have to admit I dislike that idea in the sense that we would lose
> > the 1/2 or 1/4 track options and limit to (the vast majority of) 16-
> > sec disks. Spiralling disks or some 18-sec disks may not work.
>
> Actually the 1/2 _or_ 1/4 tracks could be kept by storing them
> instead of the adjacents whole (or other 1/2 or 1/4) tracks.
> This is sufficient for non spiralling disks, and in fact 1/2 track
> disks like that would currently work in AppleWin.
>
That is correct, the head of our drives is not so precise ;-) Jean-
Pierre Lagrange, the world-famous cracking champion, told me that A2's
real hardware would not read a spiralling on the whole disk.

>
> For your new NIB format, it would be nice to be able to include
> only needed tracks and specify this with a track (bit)map.
> Of course, this editing (removal of unneeded tracks) to create a
> "sparse track image" could be done at a later time.
>
I like that idea.

>
> Um, awesome work!
>
Thank you but it is not yet finished ;-)

> Cheers,
> Nick.

antoine