29 Jan
2017
29 Jan
'17
8:28 a.m.
I've got a Panasonic JU-455-5 AAG (5.25, 360K) that I'd like to use in a
Kaypro 4. I've worked out the configuration of the drive based on a
snippet of info on the net that had some jumper settings, but I can't get
the activity light to operate. I've set the configuration to use the
light when either motor on is detected, or the drive select, but neither
seem to work. I figure a "real" manual on the drive would help.
Note that the drive seems to operate without issue other than the drive
light. Boots, etc.
g.
Tnx!
--
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29 Jan
29 Jan
10:44 a.m.
On Sun, 29 Jan 2017, geneb wrote:
I've got a Panasonic JU-455-5 AAG (5.25, 360K)
that I'd like to use in a
Can't help with those manuals. Gave them away long ago.
But, be aware that that same drive was also sold as the Shugart 455,
Matsushita 455, and National?
The Shugart printing of the manual should be more readily available.
Other variants, that should be the same for THIS issue include
465 : "720K" 96tpi double density
475 : "1.2M" 96tpi high density; I don't remember whether the 475 was a
dual speed version
Note that the drive seems to operate without issue
other than the drive
light. Boots, etc.
That sounds more like a minor hardware failure than configuration
12:08 p.m.
On Sun, 29 Jan 2017, Fred Cisin wrote:
I get a "blip" on the LED when powering off the drive, so if there's a
fault, it's pretty weird.
g.
--
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On Sun, 29 Jan 2017, geneb wrote:
The logic board on the drive looks nothing like the
Shugart 455's. The
jumper labels are pretty much the same though. I didn't get any hits on
the other manufacturers on Bitsavers.
I've got a Panasonic JU-455-5 AAG (5.25,
360K) that I'd like to use in a
Can't help with those manuals. Gave them away long ago.
But, be aware that that same drive was also sold as the Shugart 455,
Matsushita 455, and National? The Shugart printing of the manual should be more
readily available.
Yeah, it's up on Bitsavers. :)
Note that the
drive seems to operate without issue other than the drive
light. Boots, etc.
That sounds more like a minor hardware failure than configuration 
11:23 a.m.
On 01/29/2017 08:28 AM, geneb wrote:
I've got a Panasonic JU-455-5 AAG (5.25, 360K)
that I'd like to use
in a Kaypro 4. I've worked out the configuration of the drive based
on a snippet of info on the net that had some jumper settings, but I
can't get the activity light to operate. I've set the configuration
to use the light when either motor on is detected, or the drive
select, but neither seem to work. I figure a "real" manual on the
drive would help.
Note that the drive seems to operate without issue other than the
drive light. Boots, etc.
In addition to what Fred mentioned, there are some drives that employ
the "in Use" line to allow the host to illuminate the drive. I've got a
couple of YE Data drives that behave in this manner. On 8" drives, this
corresponds to "Head Load". It's pin 4 on the interface and is
active-low. You could probably tie it to the appropriate "drive select"
pin.
--Chuck
12:13 p.m.
On Sun, 29 Jan 2017, Chuck Guzis wrote:
In addition to what Fred mentioned, there are some
drives that employ
the "in Use" line to allow the host to illuminate the drive. I've got a
couple of YE Data drives that behave in this manner. On 8" drives, this
corresponds to "Head Load". It's pin 4 on the interface and is
active-low. You could probably tie it to the appropriate "drive select"
pin.
I would assume that the jumper configuration I'd set would have done that
- it has two settings, "UA" - front led handled by the In Use signal and
"DA" - front led handled by the Drive Select signal. My K4 has a pair of
Shugart 455's in it (that work fine), but I REALLY don't want to go to the
hassle of pulling a drive out in order to see if the jumper settings
match. :) It may come to that though.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
11:03 p.m.
On 01/29/2017 12:13 PM, geneb wrote:
I would assume that the jumper configuration I'd
set would have done
that - it has two settings, "UA" - front led handled by the In Use
signal and "DA" - front led handled by the Drive Select signal. My
K4 has a pair of Shugart 455's in it (that work fine), but I REALLY
don't want to go to the hassle of pulling a drive out in order to see
if the jumper settings match. :) It may come to that though.
Take a look at the drive (I've got a JU-455 here and there's a
2-position jumper with positions labeled UA and DA (roughly the middle
of the PCB, next to the MM/MS jumper. With UA jumpered, the LED will
light only on the INUSE signal; with the DA position, the LED with light
with drive select.
If you don't have the same rev drive as mine, nevermind.
--Chuck
30 Jan
30 Jan
8:05 a.m.
On Sun, 29 Jan 2017, Chuck Guzis wrote:
On 01/29/2017 12:13 PM, geneb wrote:
The activity light doesn't work in either setting.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
I would assume that the jumper configuration
I'd set would have done
that - it has two settings, "UA" - front led handled by the In Use
signal and "DA" - front led handled by the Drive Select signal. My
K4 has a pair of Shugart 455's in it (that work fine), but I REALLY
don't want to go to the hassle of pulling a drive out in order to see
if the jumper settings match. :) It may come to that though.
Take a look at the drive (I've got a JU-455 here and there's a
2-position jumper with positions labeled UA and DA (roughly the middle
of the PCB, next to the MM/MS jumper. With UA jumpered, the LED will
light only on the INUSE signal; with the DA position, the LED with light
with drive select.
8:36 a.m.
On Mon, Jan 30, 2017 at 4:05 PM, geneb <geneb at deltasoft.com> wrote:
On Sun, 29 Jan 2017, Chuck Guzis wrote:
Now I am confused...
I've downloaded the Shugart 455 service manual from bitsavers. By
the looks of things the jumper in question is the one to the left of the
control logic ASIC, between a 74LS38 and a 74LS74. It has 2 positions,
to the left DS (Drive Select), to the right UO (In use).
According to the schematic, in the DS position, the LED is not
controlled by the ASIC. The DS signal (active high drive select)
is fed to the input of U7Ba (7406), the output of which has
the LED and a 220R resistor to +5V. DS goes high, the output
transistor of the 7406 gate turns on, LED lights.
If that's the right schematic, it should be easy enough to debug.
-tony
On 01/29/2017 12:13 PM, geneb wrote:
The activity light doesn't work in either setting. I would assume that the jumper configuration
I'd set would have done
that - it has two settings, "UA" - front led handled by the In Use
signal and "DA" - front led handled by the Drive Select signal. My
K4 has a pair of Shugart 455's in it (that work fine), but I REALLY
don't want to go to the hassle of pulling a drive out in order to see
if the jumper settings match. :) It may come to that though.
Take a look at the drive (I've got a JU-455 here and there's a
2-position jumper with positions labeled UA and DA (roughly the middle
of the PCB, next to the MM/MS jumper. With UA jumpered, the LED will
light only on the INUSE signal; with the DA position, the LED with light
with drive select.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
8:51 a.m.
On Mon, 30 Jan 2017, Tony Duell wrote:
The activity light doesn't work in either
setting.
Now I am confused...
I've downloaded the Shugart 455 service manual from bitsavers. By
the looks of things the jumper in question is the one to the left of the
control logic ASIC, between a 74LS38 and a 74LS74. It has 2 positions,
to the left DS (Drive Select), to the right UO (In use).
According to the schematic, in the DS position, the LED is not
Well like I mentioned previously, the logic board in the Panasonic drive
looks *nothing* like the one in the Shugart manual. :)
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
9:07 a.m.
On 01/30/2017 08:51 AM, geneb wrote:
Well, as nearly as I can tell with mine. If you set the jumper to UA
and ground pin 4, (no other signals present), the LED will come on.
That is, the connection to the IU pin in that case is very simple.
--Chuck
According to
the schematic, in the DS position, the LED is not
Well like I mentioned previously, the logic board in the Panasonic
drive looks *nothing* like the one in the Shugart manual. :)
9:20 a.m.
On Mon, 30 Jan 2017, Chuck Guzis wrote:
On 01/30/2017 08:51 AM, geneb wrote:
Well, as nearly as I can tell with mine. If you set the jumper to UA
and ground pin 4, (no other signals present), the LED will come on.
That is, the connection to the IU pin in that case is very simple.
I'll give it a shot when I get a chance.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
According
to the schematic, in the DS position, the LED is not
Well like I mentioned previously, the logic board in the Panasonic
drive looks *nothing* like the one in the Shugart manual. :) 
9:32 a.m.
I lost track of the origin of this discussion. Is the drive that help is
needed for a JU-455 or a JU-475?
Cindy
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of geneb
Sent: Monday, January 30, 2017 10:51 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Need manual for a floppy drive...
On Mon, 30 Jan 2017, Tony Duell wrote:
The activity light doesn't work in either
setting.
Now I am confused...
I've downloaded the Shugart 455 service manual from bitsavers. By the
looks of things the jumper in question is the one to the left of the
control logic ASIC, between a 74LS38 and a 74LS74. It has 2 positions,
to the left DS (Drive Select), to the right UO (In use).
According to the schematic, in the DS position, the LED is not
Well like I mentioned previously, the logic board in the Panasonic drive
looks *nothing* like the one in the Shugart manual. :)
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment A Multi-Value database
for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
9:43 a.m.
On Mon, 30 Jan 2017, Electronics Plus wrote:
I lost track of the origin of this discussion. Is the
drive that help is
needed for a JU-455 or a JU-475?
It's a JU-455-5 AAG, Cindy. (built by Panasonic)
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
10:04 a.m.
http://blog.3b2.sk/igi/file.axd?file=2015%2F5%2F5.25-jumpers.pdf
Scroll down the page a little bit for the JU-455-5. The letters after that
usually just designated the color of bezel and who it was made for, if part
of a large OEM run.
Cindy
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of geneb
Sent: Monday, January 30, 2017 11:44 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: RE: Need manual for a floppy drive...
On Mon, 30 Jan 2017, Electronics Plus wrote:
I lost track of the origin of this discussion. Is the
drive that help
is needed for a JU-455 or a JU-475?
It's a JU-455-5 AAG, Cindy. (built by Panasonic)
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment A Multi-Value database
for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
10:20 a.m.
On Mon, 30 Jan 2017, Electronics Plus wrote:
http://blog.3b2.sk/igi/file.axd?file=2015%2F5%2F5.25-jumpers.pdf
Scroll down the page a little bit for the JU-455-5. The letters after that
usually just designated the color of bezel and who it was made for, if part
of a large OEM run.
I've already got that, thanks.
I was looking for something with a bit more detail. :)
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
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