As Mike said there are two models 9114A and 9114B, they are functionally
equivalent, however the B model uses a 1/2 high drive mechanism and I
believe there are changes to the controller as well, but I have only
seen the inside of a B model.
Paul.
On 2024-04-30 8:29 p.m., Mike Katz via
If you look around, there are cheaper ones.
I tried formatting multiple times (standard operating procedure). I
don't have a PC with a 3.5" floppy attached any more but I did try bulk
erasing the disk first.
On 4/30/2024 5:21 PM, Just Kant via cctalk wrote:
Format it more then once. That may afford additional stability.
Try
I am not familiar with a 9114 only the 9114A and 9114B.
On 4/30/2024 6:15 PM, Mike Stein wrote:
Just wondering: I see 9114 and 9114A being used interchangeably (mine
are 9114s); are they the same or actually different drives?
m
On Tue, Apr 30, 2024 at 5:39 PM Mike Katz via cctalk
wrote:
Yes but hopefully less than $45 for 10 disks.
On 4/30/2024 5:29 PM, Wayne S via cctalk wrote:
Are these the disks you need?
https://www.ebay.com/itm/303254321218?var=0=1=1=711-53200-19255-0=5338590836=10044=bb4f007d293e125433cd664c59b413a4
Sent from my iPhone
On Apr 30, 2024, at 15:22, Just
Thank you.
My goal is not to use HD floppies on a drive not designed for them. I
saw some on ebay and amazon but I thought I would try here to see if
anybody had some they don't need. I would help keep them out of the trash.
Thank you again.
On 4/30/2024 6:15 PM, Wayne S wrote:
If it’s
Just wondering: I see 9114 and 9114A being used interchangeably (mine are
9114s); are they the same or actually different drives?
m
On Tue, Apr 30, 2024 at 5:39 PM Mike Katz via cctalk
wrote:
> Thank you for your help.
>
> That is the command I am using on the 41 to try and format the disk.
>
If it’s any help, i second the reformat completely a disk in a old pc. I had
some issues many years ago where disks formatted on an ibm pc didn’t work
correctly on a non- ibm pc. Reformatting and doing the error checking by
reading and writing all sections fixed it. A quick format didn’t.
Thank you. I didn't see any new procedures that I have already tried.
I do not have a problem with the drive or with trying to format a HD
disk with the HP-41 and therefore I was looking for a few DSDD disks
instead of DSHD disks.
On 4/30/2024 5:13 PM, Wayne S wrote:
There is also these 2
Mike,
You can get new and guaranteed recycled 720K diskettes at floppydisk.com.
As you probably already know the drive in the 9114A is known to have
issues with lubricants becoming gummy and the mechanism not operating
properly, one particularly nasty effect is it may result in the upper
Are these the disks you need?
https://www.ebay.com/itm/303254321218?var=0=1=1=711-53200-19255-0=5338590836=10044=bb4f007d293e125433cd664c59b413a4
Sent from my iPhone
On Apr 30, 2024, at 15:22, Just Kant via cctalk wrote:
Format it more then once. That may afford additional stability.
Try
Format it more then once. That may afford additional stability.
Try formatting it in a pc. Then switch over to the HP.
There is also these 2 procedures to try…. From
https://literature.hpcalc.org/community/hp9114a-ms-en.pdf
TheHP9114Ausesdouble-sideddiscs.Dataiswrittenonboth sides of the disc. Thus the
normal formatting procedure is double- sided formatting. Single-sided
formatting is allowed for
Thank you for your help.
That is the command I am using on the 41 to try and format the disk.
With a directory size of 60.
On 4/30/2024 4:22 PM, Wayne S via cctalk wrote:
Also this article refers to a set of commands for this drive. The NEWM command
formats a new disk.
Link is
Also this article refers to a set of commands for this drive. The NEWM command
formats a new disk.
Link is https://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/articles.cgi?read=78
Sent from my iPhone
On Apr 30, 2024, at 14:07, Wayne S wrote:
What kind of floppies did Hp recommend to use with
What kind of floppies did Hp recommend to use with this drive?
Sent from my iPhone
> On Apr 30, 2024, at 13:55, Fred Cisin via cctalk
> wrote:
>
> On Tue, 30 Apr 2024, John Herron via cctalk wrote:
>> Yup, that's all I used to do. Some scotch tape over the floppy disk hole to
>> make the
On Tue, 30 Apr 2024, John Herron via cctalk wrote:
Yup, that's all I used to do. Some scotch tape over the floppy disk hole to
make the system see it as DD. If it didn't automatically format as 720, you
could specify size or sector count with format.com in dos.
Somemedia sensors are optical;
Thank you for your help. This drive is not a normal drive.
Please see my other answers as to why this is the case.
On 4/30/2024 3:49 PM, Fred Cisin via cctalk wrote:
A 720K 3.5" is about 600 Oersted;
a 1.4M 3.5" is about 720-750 Oersted.
You can format a 1.4M as 720K, and often, maybe even
A 720K 3.5" is about 600 Oersted;
a 1.4M 3.5" is about 720-750 Oersted.
You can format a 1.4M as 720K, and often, maybe even usually, get away
with it; it will be just like a poor quality 720K.
On drives with a media sensor, you can cover the hole during formatting.
On Tue, 30 Apr 2024,
I also thought about it first, but in the documentation it is clearly
explained that during the startup sequence, the deployment of the heads
is done at the same time as the spin up, during this deployment the
heads are raised, they are normally loaded on disc only after one minute
+- after
I could probably spare a few disks, but postage from Canada is outrageous;
let me know if no one else comes up with any.
m
On Tue, Apr 30, 2024 at 4:07 PM Mike Katz via cctalk
wrote:
> Thank you for trying to help. My situation is unusual at best and I'm
> apologize for the extra bandwidth my
Should work; DD and HD are pretty similar, unlike the 5.25 versions. Did
you cover the density hole?
With what are you using that 9114A drive? And where are you located?
I've got a couple of 9114s; I'll have to try HD disks (if I can find the
drives ;-)
m
On Tue, Apr 30, 2024 at 3:29 PM Mike
Thank you for trying to help. My situation is unusual at best and I'm
apologize for the extra bandwidth my question is causing.
I am formatting the floppies in an HP-9114A battery operated floppy
drive connected to an HP-41 calculator over the HP_IL serial interface.
The HP9114A drive uses
What errors are you seeing?
Sent from my iPhone
> On Apr 30, 2024, at 12:29, Mike Katz via cctalk wrote:
>
> I have tried bulk erasing 1.44 MB disks and they still won't format in the
> HP9114A battery operated HP-IL Floppy Disk drive.
>
>> On 4/30/2024 12:20 PM, Joshua Rice via cctalk
On 4/30/24 12:37, Dominique Carlier via cctalk wrote:
Thanks for your response Jon :!
The technical documentation is available on Bitsavers here:
http://www.bitsavers.org/pdf/diablo/disk/model_40/81603_Diablo4xMaint_Apr75.pdf
But also here:
I have tried bulk erasing 1.44 MB disks and they still won't format in
the HP9114A battery operated HP-IL Floppy Disk drive.
On 4/30/2024 12:20 PM, Joshua Rice via cctalk wrote:
On 30/04/2024 18:08, Anders Nelson via cctalk wrote:
Having grown up with 1.44MB 3.5" floppies, I have a question:
Hi Don !
Good suggestion, these microswitches are used to indicate that the heads
are completely retracted.
Unfortunately, that would have been too simple, both microswitches work
perfectly :-/
On 30/04/2024 19:43, D. Resor wrote:
What is the purpose of the two microswitches seen in the
Ha! You mean using the transformer's magnetic field to bamboozle the media?
--
Anders Nelson
www.andersknelson.com
On Tue, Apr 30, 2024 at 1:48 PM John Robertson via cctalk <
cctalk@classiccmp.org> wrote:
> On 2024/04/30 10:08 a.m., Anders Nelson via cctalk wrote:
> > Having grown up with
Bulk Erasing is the first thing I tried
On 4/30/2024 12:48 PM, John Robertson via cctalk wrote:
On 2024/04/30 10:08 a.m., Anders Nelson via cctalk wrote:
Having grown up with 1.44MB 3.5" floppies, I have a question: is it
possible to use a 1.44MB disk and just format it as a 720K disk?
=]
--
No, this is for use in an HJP9114A HP-IL Floppy Drive.
On 4/30/2024 12:08 PM, Anders Nelson via cctalk wrote:
Having grown up with 1.44MB 3.5" floppies, I have a question: is it
possible to use a 1.44MB disk and just format it as a 720K disk?
=]
--
Anders Nelson
www.andersknelson.com
On
On Tue, Apr 30, 2024, 12:48 PM John Robertson via cctalk <
cctalk@classiccmp.org> wrote:
> On 2024/04/30 10:08 a.m., Anders Nelson via cctalk wrote:
> > is it
> > possible to use a 1.44MB disk and just format it as a 720K disk
>
(Snip)
> you could
> format it as 720 - covering the 1.44 hole
>
On 2024/04/30 10:08 a.m., Anders Nelson via cctalk wrote:
Having grown up with 1.44MB 3.5" floppies, I have a question: is it
possible to use a 1.44MB disk and just format it as a 720K disk?
=]
--
Anders Nelson
www.andersknelson.com
As I recall you had to bulk erase the old diskette and then
What is the purpose of the two microswitches seen in the upper right of the
video view?
Could one or both of those be intermittent? Have they been tested for
continuity/intermittence with an analog VOM?
Don Resor
-Original Message-
From: Dominique Carlier via cctalk
Sent:
Thanks for your response Jon :!
The technical documentation is available on Bitsavers here:
http://www.bitsavers.org/pdf/diablo/disk/model_40/81603_Diablo4xMaint_Apr75.pdf
But also here:
https://www.wang2200.org/docs/external/DiabloSeries40DiskDriveFieldLevelMaintenanceGuide.03-0057.pdf
I
On 30/04/2024 18:08, Anders Nelson via cctalk wrote:
Having grown up with 1.44MB 3.5" floppies, I have a question: is it
possible to use a 1.44MB disk and just format it as a 720K disk?
I think it's entirely possible. I'd definitely format them in a 720kb
drive though to be extra safe.
Having grown up with 1.44MB 3.5" floppies, I have a question: is it
possible to use a 1.44MB disk and just format it as a 720K disk?
=]
--
Anders Nelson
www.andersknelson.com
On Tue, Apr 30, 2024 at 1:00 PM Mike Katz via cctalk
wrote:
> Does anybody have any extra 720K (double sided, double
On 4/30/24 10:46, Dominique Carlier via cctalk wrote:
Hello everyone
I need your help to identify an issue on my Diablo Model
40 Series. I don't know where to look, it's so vast !
Here's the problem:
When RUN is activated, the drive begins its spin up and
simultaneously deploys the heads
Does anybody have any extra 720K (double sided, double density) 3.5"
Floppy Disks that could use a good home?
If so, please email me directly at bit...@12bitsbest.com.
Thank you,
Mike
Hello everyone
I need your help to identify an issue on my Diablo Model 40 Series. I
don't know where to look, it's so vast !
Here's the problem:
When RUN is activated, the drive begins its spin up and simultaneously
deploys the heads (normal) but instead of stabilizing them, the Head
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