Interleaving (was: Reformatting 720 KB IBM diskettes)

["Bryan Villados" <news002@macgeek.org>]

I never knew that interleaving was of a concern among floppies. However, on
hard disk drives and other large capacity storage devices, interleaving is a
major concern. You don't ever hear about it anymore on modern computers
because even though interleaving is still being used, everything's pretty
much 1:1 interleaving. My interleaving practice is lacking on Apple IIs, but
on old Macintosh systems, they needed something at around 4:1 interleaving
(Macintosh Plus), and you could usually get away with 2:1 or even 1:1 on
machines starting with the Macintosh SE.

With that, I would imagine that interleaving on older Apple II-compatible
SCSI cards is of a concern. But again, as far as floppies go, I have no
technical information to contribute.

--- Bryan

"Simon Williams" <DON'Temail@luddite.ca> wrote in message
11282144.XLRKJRGA@news.telusplanet.net">news:11282144.XLRKJRGA@news.telusplanet.net...
> Hello,
>    I just picked up a box of 720KB double density 3.5" floppies which
> came formatted for IBM. So I reformatted them with CopyII+ and ended up
> with 800KB prodos...
>    I couldn't find a single point in which they differ *physically* from
> 800KB diskettes I have, are they in fact the same?
>    My guess is that they are the same thing but that IBM's formatting
> has more overhead than Apple's.
>    C2+ asked if I would like to use High Speed Interleave... I didn't.
> Does anyone think I should have??? I understand what this means, but not
> how it applies to Apple II's.
>
> SW