Hi, does anyone know anything about the configuration of these boards?
(The document on BitSavers only covers the Q4B; the jumper configuration
on the Q4E is totally different.) They are 4MB quad QBUS memory cards;
PMI capable, I'm pretty sure.
I have two of them, one of which came out of an
On 8/15/2015 1:55 PM, tony duell wrote:
Certainly one of my thoughts along the way. But, the spindle cone does
not rock or anything like that. And, I switched the clamping part out
with another drive - neither was affected by the swap.
It strikes me that there are 3 main subassemblies
Sorry about the error in which side has the cone and which side
has the cylinder. I don't have a 800 here in front of me
to look at.
It still doesn't make any difference if the moving arm is a little
off. The piece that is mounted on the arm is designed to float
on the spring. It is still the
On 08/15/2015 09:49 PM, dwight wrote:
Sorry about the error in which side has the cone and which side has
the cylinder. I don't have a 800 here in front of me to look at. It
still doesn't make any difference if the moving arm is a little off.
The piece that is mounted on the arm is designed to
On 8/15/2015 3:13 PM, Jay Jaeger wrote:
To make matters worse, that test with the first SA 801 managed to smoke
the 24V power supply on this system, so now I have to pull it all apart,
and pull out the regulator transistor which is mounted from the reverse
side through to the board and
On 08/15/2015 08:55 PM, Jay Jaeger wrote:
On 8/15/2015 8:31 PM, Jon Elson wrote:
On 08/14/2015 02:58 PM, Jay Jaeger wrote:
No, I didn't write any of what was quoted. ;) If one is going to remove
the entire message quoted, then it probably makes sense to delete the
wrote line as well. ;)
On 8/15/2015 8:31 PM, Jon Elson wrote:
On 08/14/2015 02:58 PM, Jay Jaeger wrote:
No, I didn't write any of what was quoted. ;) If one is going to remove
the entire message quoted, then it probably makes sense to delete the
wrote line as well. ;)
The way most of the old 8 floppies work is
http://ascii.textfiles.com/archives/4683
Apologies if this is old news...
--
Liam Proven • Profile: http://lproven.livejournal.com/profile
Email: lpro...@cix.co.uk • GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lpro...@hotmail.com • Skype/AIM/Yahoo/LinkedIn: liamproven
Cell/Mobiles: +44
I still have a bunch of vintage computer parts I'd like to find homes
for.
If you are interested either in components for a DEC VAX or in a PDP
11/34 embedded system complete with card cage, please visit my website
for details and contact information.
On 8/15/2015 11:51 AM, tony duell wrote:
In every 8 (and 5.25) drive that I've seen the spindle (the bit driven,
maybe
indirectly, by the motor) has a female cone on the end. There is then the
clamping
cone, often plastic which fits into it through the hole in the disk.
Not so on these
Not so on these drives. On the Shugart SA-800 series, the spindle
(driven by a belt from a motor) has a MALE cone on the end, and the
clamp, from above goes around it (female if you like).
How does that work? The disk media must fit around that male cone. Is the
complete disk carried by the
Not so on these drives. On the Shugart SA-800 series, the spindle
(driven by a belt from a motor) has a MALE cone on the end, and the
clamp, from above goes around it (female if you like).
I have just pulled the case on one of my HP9885s, which uses an SA801
chassis and HP electronics. The
On 8/15/2015 1:35 PM, tony duell wrote:
Not so on these drives. On the Shugart SA-800 series, the spindle
(driven by a belt from a motor) has a MALE cone on the end, and the
clamp, from above goes around it (female if you like).
I have just pulled the case on one of my HP9885s, which
Certainly one of my thoughts along the way. But, the spindle cone does
not rock or anything like that. And, I switched the clamping part out
with another drive - neither was affected by the swap.
It strikes me that there are 3 main subassemblies associated with clamping the
disk :
The
From: Liam Proven
Apologies if this is old news...
Is this Manuals Plus? They said at the start of the year that they were going
to close, and I bought a whole bunch of stuff, but then things seemed to go
quiet.
Noel
This is Manuals Plus. I've been in conversation with them for a lot of the
year, talking about the where and when for the final closedown. This is the
final closedown, and they're going to start throwing the inventory out
Monday. The project I'm doing is to go onsite on Monday and Tuesday and
take
This looks like fun..
http://mightyframe.blogspot.com/2015/08/qic-24-tape-data-block-format-decoding.html
I was twittering Jason about it yesterday.
Bill Degnan
twitter: billdeg
vintagecomputer.net
On Aug 15, 2015 7:03 AM, Liam Proven lpro...@gmail.com wrote:
http://ascii.textfiles.com/archives/4683
Apologies if this is old news...
--
Liam Proven • Profile:
On 10 August 2015 at 22:39, Eric Christopherson
echristopher...@gmail.com wrote:
He corrects that in the video itself :)
Indeed so. Just watched it through for a second time, actually. Great
fun and I too am jealous. :-D
--
Liam Proven • Profile: http://lproven.livejournal.com/profile
Email:
Mike,
I have a complete micro/37 that I'd be willing to part with. It
was last booted about 2 years ago when another list member was
trying to his a system running.
Is is mounted in one of the short / narrow HP racks with 3x670H
HPIB drives. I think the total disk size is about 1 Gb. That
seems
On 8/15/15 5:35 AM, Steve Robertson wrote:
Mike,
I have the original 9-track system
tapes (FOS), some spare NOS tapes
have you imaged all of these tapes?
Al,
I shared the images with J. David Bryan. One of the tapes
had a bad spot on it so, there was one file that was
unrecoverable. I think he was able to recreate a complete
FOS tape. My images are on a system that is currently in
storage so, it is not too easy for me to get my hands on
them. I
On 8/14/2015 11:56 PM, tony duell wrote:
There is no play in the spindle at all. Certainly not 1/2 track worth.
Can't wiggle it at all, no visible wobble, etc.
Not necessarily play. Anyway, half a track width is just over 10 thou
and I am not sure I could notice that amount of runout by
Certainly this thing is old enough. But I don't see how it would ever
work if that were the case.
When the media is on center, it works flawlessly, including interchange
with another drive.
One thing I am going to try today is to manually center the media with
the AC power disconnected (not
no, just a lot of emails, and a list member is coming Monday with a 24 or
28 foot truck he wants to fill.
On Sat, Aug 15, 2015 at 10:55 AM, shad shado...@gmail.com wrote:
Hello Paul,
I sent you an email, not sure if you received it, maybe antispam?
Thanks
Andrea
Except that when the media is aligned to the spindle correctly, the
drive performs flawlessly, including exchange with another drive. If
the spindle itself were wobbling so much as to cause the other symptoms,
I don't see how it could ever work right.
On these drives, the centering cone
On 8/14/2015 11:56 PM, tony duell wrote:
There is no play in the spindle at all. Certainly not 1/2 track worth.
Can't wiggle it at all, no visible wobble, etc.
Not necessarily play. Anyway, half a track width is just over 10 thou
and I am not sure I could notice that amount of runout by
Hello Paul,
I sent you an email, not sure if you received it, maybe antispam?
Thanks
Andrea
I have a number of laboratory instruments that are from the 1990 time
frame. They produce digital data that is the digitized signal from a
detector, the data can be from 512 to 65K samples long. The ADC used in
these instruments is a 16bit 100ksample/sec design. The ADC is in a 3
by 4 inch
I have the following items that I want to get rid of. All are quantity one,
except the Poqets. They are free for shipping cost from Chicago (ZIP 60659). I
prefer to ship in the US, but will consider shipping internationally. Contact
me directly at r_a_feld...@hotmail.com if you are interested
30 matches
Mail list logo
