Disk TPI's

From: Don Maslin <donm_at_cts.com>
Date: Mon Sep 1 13:47:27 1997

On Mon, 1 Sep 1997, Marvin wrote:

> Roger Merchberger wrote:
>
> > At 05:02 PM 8/31/97 -0700, you wrote:
> >
> > >> Don,
> > >> A small nit to pick, but _all_ 3.5" floppies are 135 tracks/inch. This
> > is
> > >> true from my SSSD 200K Tandy Portable Disk Drive 2 for my Tandy 200,
> > all
> > >> the way up to 2.88Meg 3.5" floppy drives.
> > >
> > >No, I meant exactly what I said - and for the record, 1.44mb 3.5" and 1.2
> >
> > >5.25" floppy drives are 96 tracks/inch (tpi), not 135.
>
> With this discussion of TPI, I am aware of the 5 1/4" 48 and 96 TPI, the 3
> 1/2" 135 TPI, and the Micropolis 100 TPI drives, but what other formats are
> out there? Anyone know of any online resources for this info? I checked
> the Accurite home page and they only mention (at least as far as I could
> find) 48, 96, and 135 TPI for the 3 1/2" and 5 1/4" drives. What about the
> 8" drives as well as "oddball drives" such as the 2" floppy disk (I think
> that is the size)?
 
The 8" drives are 48tpi also.
                                                 - don

    donm_at_cts.com
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
    Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
         Chairman, Dina-SIG of the San Diego Computer Society
       Clinging tenaciously to the trailing edge of technology.
         Sysop - Elephant's Graveyard (CP/M) - 619-454-8412
*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*
        see old system support at http://www.psyber.com/~tcj
Received on Mon Sep 01 1997 - 13:47:27 BST

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:30:37 BST