Interesting drive failure...

Josh Dersch derschjo at
Thu Apr 23 18:40:05 CDT 2015

On Thu, Apr 23, 2015 at 7:33 AM, Al Kossow <aek at> wrote:

> On 4/22/15 5:04 PM, David Gesswein wrote:
>  Head alignment off on those heads. Can the drive microstep or any other
>> way to change the head alignement? You might be able to recover the
>> data that way.
> Depending on how much work you wanted to put into it, you could always
> open the
> servo loop and drive the positioner externally with a microcontroller.
> I'm not sure it's worth that much effort.  I've been poring over the
dumped data and it's an RX/V 1.1 installation (which you've
already archived) that looks like it was used in the development of Ibuki
Common Lisp (or at least some form of Lisp development -- there are mails
related to lisp discussions as well as Ibuki C/Lisp source code on the
disk).  That's moderately interesting but unless anyone out there is
clamoring for this stuff I'm not going to expend too much more effort
trying to recover data...

- Josh

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