On 11/17/2017 09:17 AM, allison via cctech wrote:
> Also the Syquest 270mb IDE/parallel port cartridge disk. I have one
> that works
> and over a dozen carts. Its still in use in a ITX box using the IDE
> interface. After
> two decades of use it seems solid.
I've left out the non-floppy techno
On 11/16/2017 03:30 PM, Geoffrey Reed via cctech wrote:
>
> On 11/15/17, 9:44 AM, "cctalk on behalf of Fred Cisin via cctalk"
> wrote:
>> Can you name another 20 exceptions? (Chuck and Tony probably can)
>>
>>
>> --
>> Grumpy Ol' Fred ci...@xenosoft.com
>
> ³Floptical² disks 720 rp
No, the 9122C has two high-density, two-sided 80 cylinder drives. A drive
has no capacity, this is the function of the on-disk format.
;-)
"high-density" is even more meaningless than referring to them by their
capacity in a given format. It is a BOGUS marketing term!
On Thu, 16 Nov 2017, C
On 16 November 2017 at 21:30, Geoffrey Reed via cctalk
wrote:
>
> ³Floptical² disks 720 rpm 1.6 Mb/s transfer 1250 TPI and 25MB unformatted
> capacity
Just FYI, your quote marks render on Linux as superscript 2s.
Using an Apple device? You might want to turn off smart quotes...
https://www.jor
On 11/16/2017 12:30 PM, Geoffrey Reed via cctalk wrote:
> ³Floptical² disks 720 rpm 1.6 Mb/s transfer 1250 TPI and 25MB unformatted
> capacity
>
> LS-120 and LS-240 (which sadly I can¹t remember the specs of :(
How about the Caleb "it" drive (UHD144):
http://www.obsoletemedia.org/caleb-uhd144
On 11/15/17, 9:44 AM, "cctalk on behalf of Fred Cisin via cctalk"
wrote:
>
>Can you name another 20 exceptions? (Chuck and Tony probably can)
>
>
>--
>Grumpy Ol' Fredci...@xenosoft.com
³Floptical² disks 720 rpm 1.6 Mb/s transfer 1250 TPI and 25MB unformatted
capacity
LS-12
On Wed, Nov 15, 2017 at 09:44:24AM -0800, Fred Cisin via cctalk wrote:
[...]
> 3.5" MFM "High Density" (sometimes called "1.44M", due to the most common
> formsat being 1.41 Mebibytes, or 1.44 of a unit of 1000*1024 bytes), were
> 300 RPM at 500,000 bits per second. (1M unformatted per side)
Anot
On Wed, 15 Nov 2017, Fred Cisin wrote:
On Wed, 15 Nov 2017, Christian Corti via cctalk wrote:
No, the 9122C has two high-density, two-sided 80 cylinder drives. A drive
has no capacity, this is the function of the on-disk format.
;-)
"high-density" is even more meaningless than referring to th
On Nov 15, 2017, at 11:44 AM, Fred Cisin via cctalk
wrote:
> "400K" generally means Macintosh single sided, not DEC Rainbow, etc
For once, the physical format disambiguates those two!
The Rainbow disks are in flexible envelopes (and ~1.75” greater diameter).
(Got many of each, couldn’t keep t
No, the 9122C model has two 1.44M drives. HP made several earlier 3.5"
On Wed, 15 Nov 2017, Christian Corti via cctalk wrote:
No, the 9122C has two high-density, two-sided 80 cylinder drives. A drive has
no capacity, this is the function of the on-disk format.
;-)
"high-density" is even more
Note that there were always some exceptions.
Weltec made a 5.25" drive at 180 RPM, to do "HIGH DENSITY"/"1.2M" at
250,000 bits per second on PC/XT.
Sony made some 3.5" drives that were 600 RPM, to use 500,000 bits per
second.
NEC used 360 RPM 3.5" drives, to have the same format structure on
> On Nov 15, 2017, at 09:44, Fred Cisin via cctalk
> wrote:
>
>>> No, the 9122C model has two 1.44M drives. HP made several earlier 3.5"
> On Wed, 15 Nov 2017, Christian Corti via cctalk wrote:
>> No, the 9122C has two high-density, two-sided 80 cylinder drives. A drive
>> has no capacity, thi
On 2017-11-15 1:44 PM, Fred Cisin via cctalk wrote:
No, the 9122C model has two 1.44M drives. HP made several earlier 3.5"
On Wed, 15 Nov 2017, Christian Corti via cctalk wrote:
No, the 9122C has two high-density, two-sided 80 cylinder drives. A
drive has no capacity, this is the function of
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