floppy controller IC (was Re: Fixing a PET?)

From: Don Maslin <donm_at_cts.com>
Date: Thu Sep 30 15:34:32 1999

On Thu, 30 Sep 1999 Glenatacme_at_aol.com wrote:

> In a message dated 09/30/1999 1:05:05 AM Eastern Daylight Time, donm_at_cts.com
> writes:
>
> > I think that you are confusing DSHD and 96tpi which are not necessarily
> > the same thing.
>
> You might be right (about my confusion) ;>)
>
> > Most DSDD disks will format to 96tpi (720k on 5.25"),
> > even the generics. But I have yet to successfully format a DSDD (360k)
> > to 1.2mb or a DSHD (1.2mb) to 360k.
>
> ISTR formatting DSHD diskettes to 360 KB in an emergency (we're talking
> IBM-type pcs here) but only after hitting them with a bulk tape eraser to
> wipe them clean, and then using the proper DOS FORMAT parameters . . .

Was this in a 1.2mb drive? I never tried that, only in a 360k drive.

Hmmm! Interesting, I just tried it and it seems to work. Even wrote to
it in a 360k drive and it was readable. Question is, how long?

                                                 - don
 
> Then again, I've been wrong before ;>)
>
> Regards,
>
> Glen Goodwin
> 0/0
>
Received on Thu Sep 30 1999 - 15:34:32 BST