The one I had used a standard sort of FDC, so it's not likely it was hard
sectored, nor is it likely it used some off-beat, e.g. GCR, modulation scheme.
Dick
----- Original Message -----
From: "ajp166" <ajp166_at_bellatlantic.net>
To: <classiccmp_at_classiccmp.org>
Sent: Sunday, March 17, 2002 11:51 AM
Subject: Re: DSQD Drives (Was: RE: Diags/Boot image for Altos 580)
> From: Douglas Quebbeman <dhquebbeman_at_theestopinalgroup.com>
>
>
> >> IIRC the Floppy on an Altos 580 is DSQD.
> >
> >Am I correct that while different from standard
> >DSDD, they are *not* GCR drives?
>
>
> DSQD generally means 80 track two sided drives such as
> TEAC FD55F or G and double density encoding. Typically
> they store around 800k.
>
> FYI that can mean hard or softsectored as that is controller
> not drive dependent.
>
> >What other machines might carry these drives, can I
> >hook one up to a standard PC controller in a box
> >running DOS, and then duplicate the disks?
>
>
> Kaypro with Advent turborom, AmproLB, Micromint SB180
> to name a few.
>
> >This is good to know, ST225s still pop up from time to time...
>
>
> St225, ST251 and related drives are fairly common.
>
> Allison
>
>
Received on Sun Mar 17 2002 - 13:11:14 GMT