On 8/20/22 15:36, Fred Cisin via cctalk wrote:
> Adkisson and Masaro now deny the whole "bar napkin disk" story;
> In agreement that 8" was larger than desired, they asked Dr. Au Wang
> "What size should it be?"
> Wang picked up the bar napkin (the meeting was not in a conference
> room), and
Adkisson and Masaro now deny the whole "bar napkin disk" story;
In agreement that 8" was larger than desired, they asked Dr. Au Wang "What
size should it be?"
Wang picked up the bar napkin (the meeting was not in a conference room),
and said, "This size".
They took the napkin back to the lab
Maybe it is on a size reduction.
Dwight
From: geneb via cctalk
Sent: Saturday, August 20, 2022 7:47 AM
To: Liam Proven via cctalk
Cc: geneb
Subject: [cctalk] Re: "Revival" of a dedicated Micropolis webpage on internet
On Wed, 17 Aug 2022, Liam Proven via
On 8/20/22 13:26, Fred Cisin via cctalk wrote:
> Oh, I am well aware that you know far more about such things than I ever
> did, nor ever will.
I really doubt that.
On the subject of azimuth, even Micropolis didn't get it right. We
started testing the new drives as they came in and about 40%
The Dysan Digital Diagnostic Diskette included track(s) where SECTORS
were recorded progressively offset!
I can visualize, and am impressed with, how you offset tracks for
alignment diskettes, but I'm having difficulty imagining the Dysan
mechanism. Large intersector gaps, and a separate pass
On 8/20/22 12:06, Fred Cisin via cctalk wrote:
>
> The Dysan Digital Diagnostic Diskette included track(s) where SECTORS
> were recorded progressively offset!
> I can visualize, and am impressed with, how you offset tracks for
> alignment diskettes, but I'm having difficulty imagining the Dysan
1) because they need to keep reinforcing until the very last SA400 is
buried.
On Sat, 20 Aug 2022, geneb via cctalk wrote:
Fred, Don't forget the SA390 in every Disk II. ;)
The first Disk II's were SA400's with the logic board removed.
Once they had volume (not prototypes), Shugart started
On Sat, 20 Aug 2022, Chuck Guzis via cctalk wrote:
field use, so it was acceptable to record tracks at various offsets to
get a good idea of how far from the radial ideal the customer's drives
were. I'm a bit surprised with the call for finding alignment disks,
that this hasn't been done in the
> I have to ask, which is tragic? Needing to lookup SA400, or the fact
> that webpage (from the Smithsonian), indicates it~@~Ys a 3 1/4~@~]
> drive. That wasn~@~Yt typo on my part they say *three*.
On the Smithsonian webpage, to add to the tragedy:
Note: Comment submission is temporarily
On 8/20/22 08:42, Zane Healy via cctalk wrote:
>
> I have to ask, which is tragic? Needing to lookup SA400, or the fact that
> webpage (from the Smithsonian), indicates it’s a 3 1/4” drive. That wasn’t
> typo on my part they say *three*.
I do have a couple of the 3 1/4" drives and media to
> On Aug 20, 2022, at 7:47 AM, geneb via cctalk wrote:
>
> On Wed, 17 Aug 2022, Liam Proven via cctalk wrote:
>
>> I had to look up SA400. I'm too young.
>>
>> The Smithsonian has one. They say it's a 3¼ inch drive.
>>
>>
On Wed, 17 Aug 2022, Liam Proven via cctalk wrote:
On Tue, 16 Aug 2022 at 23:51, Fred Cisin via cctalk
wrote:
1) because they need to keep reinforcing until the very last SA400 is
buried.
Fred, Don't forget the SA390 in every Disk II. ;)
I had to look up SA400. I'm too young.
The
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