On Mon, 1 Sep 1997, 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.
>
> Don,
>
> You are certainly correct in that the 1.2Meg 5.25" floppies (and the 720K
> 80 track 5.25" drives as well) are 96 TPI. However, I would really like to
> see the specifications on a 3.5" drive that's 96TPI, as I have owned nearly
> 30 of these drives, from 200K SSSD up to 2.88Meg DSED, and all that I've
> ever owned, seen, or even heard of are all 135TPI.
You are correct, I erred! The 3.5" diskettes are at a higher tpi. There
simply is not a sufficiently large window in the disk housing to access
80 tracks at 96tpi. Sorry!
- don
> As well, all standard 3.5" media is 135TPI, and I have successfully
> formatted and used HD media in my Tandy Portable Disk Drive 2. (they work
> wonderfully, might I add.
>
> If you're quoting a non-standard drive/media, you've surely stumbled upon a
> rare beast indeed!
>
> HTH,
> Roger Merchberger
> --
> Roger Merchberger | If at first you don't succeed,
> Programmer, NorthernWay | nuclear warhead disarmament should *not*
> zmerch_at_northernway.net | be your first career choice.
>
donm_at_cts.com
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Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
Chairman, Dina-SIG of the San Diego Computer Society
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Received on Mon Sep 01 1997 - 13:43:40 BST