FW: RK05 question

From: Fred N. van Kempen <waltje_at_pdp11.nl>
Date: Tue Jul 13 08:43:46 2004

On Tue, 13 Jul 2004, Paul Koning wrote:

> David> the "home" slit and synthesize the individual sectors. Never
> David> tried this with an RK05 [heck havent touched one of them in
> David> over 25 years!], but I have used this technique to synchronize
> David> otgher items.....
>
> I suppose that's possible. One way to do it would be to build a PLL
> that's locked to the start of track pulse, and derive a 12x or 16x
> sector clock from that. Or, analogously, you could use a PLL to
> derive a 16 sector clock from the 12 sector clock (multiple by 4/3rd,
> not hard with a PLL). That's probably a good solution...

Hm, and then ignore the "real" sector pulses and feeding the drive
electronics the output of the PLL? Smart, that should work, assuming
one can format the packs given this "sector clock".

Would these then be called hard- or soft-sectored? :)

--f
Received on Tue Jul 13 2004 - 08:43:46 BST