16 Apr
2003
16 Apr
'03
11:26 a.m.
From: "Fred Cisin (XenoSoft)"
<cisin(a)xenosoft.com>
On Wed, 16 Apr 2003, Kurtk7 wrote:
> The 8" disks are not so much a problem, but from what I can tell, there were
> 2.0, 2.5, 2.8, 3.0, 3.25, and 4.0 inch formats and finding even one example
I don't know that 8 inch were all that regular. You have 16
hard sectored and 32 hard sectored. You even have a hard sectored with
the holes around the outside of the disk instead of the center.
Now, add single/double density and single/double sided.
Dwight
Also:
2.9"
3.9"
and, of course,
5.25" (soft-sector, hard-sector (10 and 16), twiggy)
3.5" (early ones without shutter, manual shutter, one-way shutter,
floptical)
16 Apr
16 Apr
4:24 p.m.
New subject: Stop it! Re: Where can one find 2.5 inch floppy disks, and other odd sizes
You guys are going to give the poor guy a nervous break down! :-)
Joe
At 01:22 PM 4/16/03 -0700, Dwight wrote:
From:
"Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com>
On Wed, 16 Apr 2003, Kurtk7 wrote:
> The 8" disks are not so much a problem, but from what I can tell, there were
> 2.0, 2.5, 2.8, 3.0, 3.25, and 4.0 inch formats and finding even one example
I don't know that 8 inch were all that regular. You have 16
hard sectored and 32 hard sectored. You even have a hard sectored with
the holes around the outside of the disk instead of the center.
Now, add single/double density and single/double sided.
Dwight
>
>Also:
>2.9"
>3.9"
>
>and, of course,
>5.25" (soft-sector, hard-sector (10 and 16), twiggy)
>3.5" (early ones without shutter, manual shutter, one-way shutter,
>floptical) 
5:36 p.m.
New subject: Stop it! Re: Where can one find 2.5 inch floppy disks, and other odd sizes
On Wed, 16 Apr 2003, Joe wrote:
You guys are going to give the poor guy a nervous
break down! :-)
Actually, it's an excellent way to start collecting. It's like filling in
a "Lincoln Cent" folder. With half a dozen, you can have an interesting
collection, but as the collection matures, there are virtually endless
additional different ones to add to the collection. And even a giant
collection doesn't need much of any storage space!
Anyone else have any Amlyn diskettes? (besides Sam) It's an EARLY 1.2M
with 5 disks in a holder and a mechanism for changing disks under software
control. The diskettes are usable as 1.2M, but have extra holes for the
changing mechanism.
--
Fred Cisin cisin(a)xenosoft.com
XenoSoft http://www.xenosoft.com
18 Apr
18 Apr
2:15 a.m.
New subject: Stop it! Re: Where can one find 2.5 inch floppy disks, and other odd sizes
At 19:23 16/04/2003 -0700, Fred Cisin (XenoSoft) wrote:
Anyone else have any Amlyn diskettes? (besides Sam)
It's an EARLY 1.2M
with 5 disks in a holder and a mechanism for changing disks under software
control. The diskettes are usable as 1.2M, but have extra holes for the
changing mechanism.
I remember back in my early BBC days, when the floppy drives were often
single-sided, being able to buy "flippable discs" - they had extra holes in
them so you could insert the disc into the drive either way up, and use
both sides!
You could also buy some natty little punches to allow you to modify stock
floppies in the same way.
Rob
11:03 a.m.
New subject: Flippy disks (was: Stop it! Re: Where can one find 2.5 inch
>Anyone else have any Amlyn diskettes? (besides
Sam) It's an EARLY 1.2M
>with 5 disks in a holder and a mechanism for changing disks under software
>control. The diskettes are usable as 1.2M, but have extra holes for the
>changing mechanism.
On Fri, 18 Apr 2003, Rob O'Donnell wrote:
I remember back in my early BBC days, when the floppy
drives were often
single-sided, being able to buy "flippable discs" - they had extra holes in
them so you could insert the disc into the drive either way up, and use
both sides!
The extra holes in the Amlyn included a large rectangualr hole near
the corner to give the changer something to grab.
You could also buy some natty little punches to allow
you to modify stock
floppies in the same way.
That was one of my first retail products 25 years ago - a plexiglass jig
for marking the location for the index hole and write enable notch, with a
punch for making the holes. The deluxe model also had a jig onthe side
for applying hub reinforcing rings.
I have discontinued the product, and at the last VCF, I couldn't even sell
NOS ones.
--
Fred Cisin cisin(a)xenosoft.com
XenoSoft http://www.xenosoft.com
12:07 p.m.
New subject: Flippy disks (was: Stop it! Re: Where can one find 2.5 inch
At 01:00 PM 4/18/03 -0700, Grumpy Fred wrote:
That was one of my first retail products 25 years ago - a plexiglass jig
for marking the location for the index hole and write enable notch, with a
punch for making the holes. The deluxe model also had a jig onthe side
for applying hub reinforcing rings.
I have discontinued the product, and at the last VCF, I couldn't even sell
NOS ones.
You should put one on E-bay with lots of hype. I'll bet you'll get an arm and a
leg for it. :-/
Joe
3:40 p.m.
New subject: Flippy disks (was: Stop it! Re: Where can one find 2.5 inch
On Fri, 18 Apr 2003, Fred Cisin (XenoSoft) wrote:
I have discontinued the product, and at the last VCF,
I couldn't even sell
NOS ones.
If I'd have known you were selling them I would have grabbed one. I'm
usually too busy running around to notice cool little things like that
sitting on the table.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
1:23 p.m.
New subject: Stop it! Re: Where can one find 2.5 inch floppy disks, and
I remember back in my early BBC days, when the floppy
drives were often
single-sided, being able to buy "flippable discs" - they had extra holes in
them so you could insert the disc into the drive either way up, and use
both sides!
I've seen a 5.25" signle-head drive that had the option of 2 index
sensors and 2 write-protect switches so that any normal disk could be
flipped over.
3" single-head drives normally allowed you to insert the disk both ways
up too, so as to use both sides. Double head drives had an extra bracket
so that the disk would only fit the right way up. Which meant that
double-head drives could not normally read disks written on single-head
drives (since the 'flup side' was recorded backwards...)
-tony
7767
days inactive
7769
days old
7 comments
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