[Coco] Cleaning Coco disks (gene heskett)

[Arthur Flexser]

As a historical note of probably no practical use whatever, there was
a CoCo program that was designed to work with one of those Dysan
calibration disks, which I used a number of times and which seemed to
work quite well.

Art

On Sun, Jan 22, 2012 at 12:43 AM, gene heskett <gheskett at wdtv.com> wrote:
>
> As for a known good drive calibration floppy, Dyson sold those all through
> the 70-80's, had all sorts of test signals depending on what track, because
> each track was recorded in a different, vary carefully calibrated drive
> that was then diddled to have one specific error.  Because of that, the
> last new one I saw was probably 25 years ago, and about $75 in 1982 money,
> and while you could copy it, the copy was worthless.
>