11 Feb
2009
11 Feb
'09
5:13 p.m.
> The problem comes if you want 2 offset tracks say
180 drgrees out of phase
> (so one is at its innerpost point when the other is at the outermost point).
> Aligning the media to the offset hub accurately to do that would
> be 'interesting'.
On Wed, 11 Feb 2009, Roy J. Tellason wrote:
Didn't the Lisa have floppy drives with heads on
opposite sides of the
spindle? :-)
the "twiggy" drive. Apparently, not all 5.25" diskettes had thumbprints
on the media, so they added an extra access slot where your thumb would go
600 Oerstedt media, 96TPI???
There are 8 possible ways to put a 5.25" diskette into the drive, without
damaging it. Did the Lisa have two sets of heads, or was the extra access
slot there just to double the odds that the position in which it was
inserted would work?