30 Nov
2015
30 Nov
'15
2:09 p.m.
Nothing wrong with what you wrote that I can see; excellent tutorial IMO.
m
----- Original Message -----
From: "Fred Cisin" <cisin at xenosoft.com>
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>
Sent: Monday, November 30, 2015 4:45 PM
Subject: Re: Sector Interleave
>
Oversimplified remedial tutorial:
> Ideally, the system reads a sector, does what it has to do with the content, and goes
back for the next one, and can read every sector of the track in a single revolution.
From: "Paul Koning" <paulkoning at comcast.net>
Your writeup was aimed at floppy disks, but
interleave may also appear
on hard drives. I don't remember it in reasonably modern systems, but
it shows up on CDC 6000 systems.
On Mon, 30 Nov 2015, Mike Stein wrote:
----- Reply ----- Definitely an issue with IBM
PC/XTs and clones; I
recall testing every new combination of HD and controller for most
efficient interleave before I delivered to the client.
1) Are there any examples newer than PC/XT 5160?
Although, obviously, completely hidden from the user, is it still used on
anything "modern"?
(Should ALL verbs be changed to past tense?)
2) Is it used on anything besides spinning rust?
3) Besides all of my examples being floppy, what else should be
changed/corrected in what I wrote?