Here’s a demo video of a Pertec 5.25” drive that has dual index sensors so you
can simply flip a standard disk over and use both sides:
https://www.youtube.com/watch?v=8UCcONLTsuQ&t=32s
Mike
On Mon, 1 Nov 2021, Chuck Guzis via cctalk wrote:
Just as a follow up, I grabbed one of the Memorex "flippies" out of my
files:
https://i.imgur.com/3VnrazS.jpg
That's really neat. Thanks for the photo!
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
htt
Just as a follow up, I grabbed one of the Memorex "flippies" out of my
files:
https://i.imgur.com/3VnrazS.jpg
--Chuck
On 11/1/21 8:24 AM, mike wrote:
> I use a few Shugart 8" single sided drives on my cp/m 2.2 machine. How do
> you make 'flippies'?
>
> Mike Zahorik
Simple enough--Get yourself a hand punch like this one:
https://www.swingline.com/c/punches/?rslt=34
Using an old floppy jacket (sans cookie), plac
le sided drives on my cp/m 2.2 machine. How do
you make 'flippies'?
Mike Zahorik
(414) 254-6768
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Chuck Guzis
via cctalk
Sent: Monday, November 01, 2021 12:34 AM
To: Ali via cctalk
Subject: Re: 8"
Ali via cctalk
Subject: Re: 8" disk drive questions...
On 10/31/21 10:07 PM, Ali via cctalk wrote:
> "Computers that used the floppy index hole also required two additional
> openings in the floppy case to allow the drive to access when the disk was
> upside down. However, it w
On 10/31/21 10:07 PM, Ali via cctalk wrote:
> "Computers that used the floppy index hole also required two additional
> openings in the floppy case to allow the drive to access when the disk was
> upside down. However, it was a difficult and risky operation for the
> integrity of the support. To f
> > I guess this is not the deluxe model?
> >
> https://www.computerhistory.it/images/stories/storia/supporti/8inch_pun
> cher.
> > jpg
>
> Well, that one is not the "Berkeley Microcomputer Flip-Jig"
> Mine was just a simple plexi pocket with holes for MARKING the disk.
> Then, the holes were punc
On 10/31/21 3:40 PM, geneb via cctalk wrote:
>> On Sun, 31 Oct 2021, Chuck Guzis via cctalk wrote:
>> I've taped over the SS hole, but still have issues with the Applesauce
>> - I suspect I damaged it with all my messing around. I'll try hooking
>> it back up to a PC and see how it does with the
On Sun, 31 Oct 2021, geneb via cctalk wrote:
I've got the maintenance guide, so I'll look to see what is there when I
get a chance, thanks.
I didn't see anything in the manual about how to handle the two index
sensors, or to deactivate one of them.
In normal use, it should be transparent to
On Sun, 31 Oct 2021, geneb via cctalk wrote:
On Sun, 31 Oct 2021, Chuck Guzis via cctalk wrote:
I use an 842 here quite frequently, and as far as memory serves, it's
side-hole-blind. That is, a disk with a single-sided aperture only can
still be processed as a double-sided disk.
However, as
One of my first products to market, the "Berkeley Microcomputer
FlipJig", was a plexiglass "pocket" with holes, for marking diskettes
for punching the extra holes.
The "deluxe" model had a stub spindle on the outside and a ring, for
putting on hub reinforcers.
On Sun, 31 Oct 2021, Ali wrote:
> One of my first products to market, the "Berkeley Microcomputer
> FlipJig",
> was a plexiglass "pocket" with holes, for marking diskettes for
> punching
> the extra holes.
> The "deluxe" model had a stub spindle on the outside and a ring, for
> putting on hub reinforcers.
>
I guess this is no
On Sun, 31 Oct 2021, Chuck Guzis via cctalk wrote:
I use an 842 here quite frequently, and as far as memory serves, it's
side-hole-blind. That is, a disk with a single-sided aperture only can
still be processed as a double-sided disk.
However, as Fred says, best to check the jumpers. I belie
On 10/31/21 12:14 PM, Fred Cisin via cctalk wrote:
> Put a piece of opaque tape over one of the holes.
> Make sure that it is solidly attached.
> I used to use write protect tabs.
> But aged write protect tabs rarely still stick well.
> And, it is a hassle to dig out ones that have fallen off insid
On Sun, 31 Oct 2021, Chuck Guzis via cctalk wrote:
Gene, are you certain that these aren't "flippy disks" (two index
apertures)?
And, if you punch a THIRD hole, then the disk could be used DS, OR Flippy!
One of my first products to market, the "Berkeley Microcomputer FlipJig",
was a plexigla
Put a piece of opaque tape over one of the holes.
Make sure that it is solidly attached.
I used to use write protect tabs.
But aged write protect tabs rarely still stick well.
And, it is a hassle to dig out ones that have fallen off inside the drive.
I ran most of my 8" drives without cases, so i
On Sun, 31 Oct 2021, Chuck Guzis via cctalk wrote:
On 10/31/21 9:57 AM, geneb via cctalk wrote:
I'm working with the developer of the Applesauce disk imaging tool in
order to iron out some issues with 8" disk support.
I'm using a Qumetrak 842 disk drive that's got support for both double
and
On 10/31/21 9:57 AM, geneb via cctalk wrote:
>
> I'm working with the developer of the Applesauce disk imaging tool in
> order to iron out some issues with 8" disk support.
>
> I'm using a Qumetrak 842 disk drive that's got support for both double
> and single-sided media. This means that it's e
I'm working with the developer of the Applesauce disk imaging tool in
order to iron out some issues with 8" disk support.
I'm using a Qumetrak 842 disk drive that's got support for both double and
single-sided media. This means that it's equipped with two index hole
sensors, slightly offse
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