20 Sep
2002
20 Sep
'02
8:12 a.m.
From: Tothwolf <tothwolf(a)concentric.net>
On Wed, 18 Sep 2002, Dwight K. Elvey wrote:
Hi
Well, it looks like I was right after all. The part numbers
I posted were correct. I could use a couple of these cords
myself. I have a few but not as many as I have things to use it
on and some cords are in poor shape. I'm not sure If Allied
has a minimum order ( but I think they do ) but I'd be willing
go in with someone else on a purchase of at least 3 of these
cords. Their on line is listed as www.allied.avnet.com.
I haven't checked it out yet but if there is some interest
it might be worth it. The shipping will be high compared to
the cost of the cords but that is life.
Dwight
Repost of numbers:
manuf Manuf# Allied# Length Price
Alpha 543 663-7082 7'6" 4.62
Belden 17952 612-3569 8' 5.38 < non-standard line/neutral
Belden 17280 612-3677 7'6" 4.84
An interesting side note about the Belden cords
that I found in a web
search:
" The Eberline Instruments using the non-standard AC cord are listed on
page two of this bulletin. Belden power cord model #17280 has standard
polarity per UL 817 and CSA 895B and should NOT be used on the Eberline
instruments listed. Belden model #17952 has polarity, neutral and lines
reversed and is the only cord to be used on the Eberline Instruments
listed. The non-standard cords come from the manufacturer with a paper
label stating that they have reversed polarity but the labels are
susceptible to damage and are easily lost. "
I have one of those non-standard cords in a box of parts for my JC80
system. It appears Johnson Controls used those cords for that system. I'd
like to find a couple more of those cords (I'm short one, and could use a
spare) if anyone comes across any.
-Toth
20 Sep
20 Sep
12:19 p.m.
New subject: Data General Nova 3 pictures
Hello,
As a follow-up to the DG Nova 3/12 rescue, I've taken a bunch
of photos of the system and added what commentary I could.
You can see the whole thing at
http://www.decodesystems.com/dg-nova3/
Cheers,
Dan
12:34 p.m.
New subject: Data General Nova 3 pictures
I would venture that the MPX8A is a multiplexor. It probably allows
switching between various inputs into the ADC. Likely it has some
buffering, and is perhaps medical rated.
--John
-----Original Message-----
From: cctalk-admin(a)classiccmp.org [mailto:cctalk-admin@classiccmp.org]On
Behalf Of Dan Veeneman
Sent: Friday, September 20, 2002 17:27
To: cctalk(a)classiccmp.org
Subject: Data General Nova 3 pictures
Hello,
As a follow-up to the DG Nova 3/12 rescue, I've taken a bunch
of photos of the system and added what commentary I could.
You can see the whole thing at
http://www.decodesystems.com/dg-nova3/
Cheers,
Dan
12:39 p.m.
New subject: Data General Nova 3 pictures
And in looking closer at the pictures, I would venture to say that the 8
input selector on the front of the respirator control panel is what selects
which channel on the mux that gets routed to the A/D. At the time, those
A/Ds were *incredibly* expensive. I had a 12 bit ADC and DAC pair given to
me, and they were valued around $500 at the time (1983?)
--John
-----Original Message-----
From: cctalk-admin(a)classiccmp.org [mailto:cctalk-admin@classiccmp.org]On
Behalf Of Dan Veeneman
Sent: Friday, September 20, 2002 17:27
To: cctalk(a)classiccmp.org
Subject: Data General Nova 3 pictures
Hello,
As a follow-up to the DG Nova 3/12 rescue, I've taken a bunch
of photos of the system and added what commentary I could.
You can see the whole thing at
http://www.decodesystems.com/dg-nova3/
Cheers,
Dan
12:41 p.m.
New subject: Data General Nova 3 pictures
On Fri, 20 Sep 2002, Dan Veeneman wrote:
As a follow-up to the DG Nova 3/12 rescue, I've
taken a bunch
of photos of the system and added what commentary I could.
You can see the whole thing at
http://www.decodesystems.com/dg-nova3/
The Analog Devices MPX8A is a multiplexer of some sort. I think the
databook you need is the Analog Devices Module Subsystems Volume 1. I have
Volume 2, but it does not cover that device.
-Toth
1:02 p.m.
New subject: Heathkit H10 paper tape reader/punch?
I'm starting to play with a Heathkit H11 I got a while back. Does anyone
have an H10 reader/punch they're not using?
-- Tony
1:49 p.m.
New subject: Heathkit H10 paper tape reader/punch?
At 06:02 PM 9/20/02 -0400, you wrote:
I'm starting to play with a Heathkit H11 I got a
while back. Does anyone
have an H10 reader/punch they're not using?
I hate to sound like an AOL'er, but..."me too!"
I've got an H-11 in unknown condition with an H-10 that doesn't work.
I'd love to get my hands on another H-10, even temporarily, in order
to try and get mine working correctly.
Tony, I've got the Heathkit manual for the H-10 if you need any information
from it.
Cheers,
Dan
www.decodesystems.com/wanted.html
2:04 p.m.
New subject: Heathkit H10 paper tape reader/punch?
Thanks! I have what looks like a full set of H11 docs, so if you need
anything, drop me a line.
-- Tony
At 06:58 PM 9/20/2002 -0400, you wrote:
At 06:02 PM 9/20/02 -0400, you wrote:
I'm starting to play with a Heathkit H11 I got
a while back. Does anyone
have an H10 reader/punch they're not using?
I hate to sound like an AOL'er, but..."me too!"
I've got an H-11 in unknown condition with an H-10 that doesn't work.
I'd love to get my hands on another H-10, even temporarily, in order
to try and get mine working correctly.
Tony, I've got the Heathkit manual for the H-10 if you need any information
from it.
Cheers,
Dan
www.decodesystems.com/wanted.html
1:42 p.m.
New subject: Data General Nova 3 pictures
Note that the "cassette I/O" controllers normally have a serial port
interface on them and the "cassette I/O" section os usually unpopulated.
This 4075/76/77/78 controller was favored over the standard DG 4007/8/9/10
serial port controller for many years as it had more options and was easier
to configure than the the 4007 board. So you probably have two serial ports
in that configuration...
Bruce
----- Original Message -----
From: "Dan Veeneman" <dan(a)ekoan.com>
To: <cctalk(a)classiccmp.org>
Sent: Friday, September 20, 2002 3:27 PM
Subject: Data General Nova 3 pictures
Hello,
As a follow-up to the DG Nova 3/12 rescue, I've taken a bunch
of photos of the system and added what commentary I could.
You can see the whole thing at
http://www.decodesystems.com/dg-nova3/
Cheers,
Dan
21 Sep
21 Sep
12:14 p.m.
New subject: Data General Nova 3 pictures
I have the 1984, 1990 and 1992 AD catalogs and none of them lists the ADC-120 device.
Based on the PNs that they do list I think the 120 part is far older. There's no
mention of ANYTHING with a MPX part number.
Have you tried contacting AD and asking them about them?
BTW doesn't AD's website suck?! There's nothing on it except talk about
clones of the Intel CPUs for use in PCs.
Joe
At 05:27 PM 9/20/02 -0400, you wrote:
Through the access panel you can see a couple of
Analog Devices modules. The function of the ADC-120Z I can guess, but what is the MPX8A?
Comments received:
J.C. Wren:
I would venture that the MPX8A is a multiplexor. It probably allows switching between
various inputs into the ADC. Likely it has some buffering, and is perhaps medical rated.
And in looking closer at the pictures, I would venture to say that the 8 input selector on
the front of the respirator control panel is what selects which channel on the mux that
gets routed to the A/D. At the time, those A/Ds were *incredibly* expensive. I had a 12
bit ADC and DAC pair given to me, and they were valued around $500 at the time (1983?)
Toth:
The Analog Devices MPX8A is a multiplexer of some sort. I think the databook you need is
the Analog Devices Module Subsystems Volume 1. I have Volume 2, but it does not cover that
device.
20 Sep
20 Sep
8:36 p.m.
On Fri, 20 Sep 2002, Dwight K. Elvey wrote:
Well, it looks like I was right after all. The part
numbers
I posted were correct. I could use a couple of these cords
myself. I have a few but not as many as I have things to use it
on and some cords are in poor shape. I'm not sure If Allied
has a minimum order ( but I think they do ) but I'd be willing
go in with someone else on a purchase of at least 3 of these
cords. Their on line is listed as www.allied.avnet.com.
Ditto. Count me in for 3.
Sellam Ismail Vintage Computer Festival
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7952
days inactive
7953
days old
10 comments
8 participants
participants (8)
-
bkr＠WildHareComputers.com -
dan＠ekoan.com -
dwightk.elvey＠amd.com -
foo＠siconic.com -
jcwren＠jcwren.com -
rigdonj＠cfl.rr.com -
tony.eros＠machm.org -
tothwolf＠concentric.net