1 Sep
2000
1 Sep
'00
6:59 p.m.
if your going to post this at least a brief descrption for those of us
that
really dont care to navagate ebay.
Allison
-----Original Message-----
From: Pat Barron <pat(a)transarc.ibm.com>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Friday, September 01, 2000 7:28 PM
Subject: Want a nice supercomputer ... ?
Check this out ...
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=426080142
--Pat.
1 Sep
1 Sep
7:17 p.m.
if your going to post this at least a brief descrption
for those of us
that
really dont care to navagate ebay.
Allison
Agreed!
However, it's a Cray Y-MP C90 and they want a starting bid of only
$35,000.00 on it. Oddly enough, no one has bid yet. Though that is
undoubtably because it's only been up for about three hours.
Zane
7:57 p.m.
However, it's a Cray Y-MP C90 and they want a
starting bid of only
$35,000.00 on it. Oddly enough, no one has bid yet. Though that is
undoubtably because it's only been up for about three hours.
It, like most other supercomputers that appear on Ebay, probably will not
get any bids, as I think most buyers are quick to realize the mess such a
sale can make. $35,000 is an awful big bunch of money.
The C90s are big machines - look at the picture and you will see that the
thing is rather huge (something like nine feet in diameter). Crays are
also incredibly heavy, C90s being no different, so they can not be easily
placed in a home or business (unless gutted, and we don't want to see that).
It is a shame that PSC seems to be in a hurry about getting rid of the
machine. RCS/RI would take it in (hmmm...maybe I will send them a
letter), but there is no way we can have the thing ready to move out of
there within two weeks.
William Donzelli
aw288(a)osfn.org
8:26 p.m.
IIRC, there was a previous discussion here about removal of a Cray
computer. The gist was it is quite expensive (~50K) to drain the
coolant, deinstall the system, move it, set it up, and replace the
coolant.
Anyone else remember this? I could sell a bit of stock and cover
the opening bid, but I don't know what it would cost to move it.
clint
PS Can I plug this into my toaster outlet? :^
On Fri, 1 Sep 2000, William Donzelli wrote:
However,
it's a Cray Y-MP C90 and they want a starting bid of only
$35,000.00 on it. Oddly enough, no one has bid yet. Though that is
undoubtably because it's only been up for about three hours.
It, like most other supercomputers that appear on Ebay, probably will not
get any bids, as I think most buyers are quick to realize the mess such a
sale can make. $35,000 is an awful big bunch of money.
The C90s are big machines - look at the picture and you will see that the
thing is rather huge (something like nine feet in diameter). Crays are
also incredibly heavy, C90s being no different, so they can not be easily
placed in a home or business (unless gutted, and we don't want to see that).
It is a shame that PSC seems to be in a hurry about getting rid of the
machine. RCS/RI would take it in (hmmm...maybe I will send them a
letter), but there is no way we can have the thing ready to move out of
there within two weeks.
William Donzelli
aw288(a)osfn.org
8:54 p.m.
IIRC, there was a previous discussion here about
removal of a Cray
computer. The gist was it is quite expensive (~50K) to drain the
coolant, deinstall the system, move it, set it up, and replace the
coolant.
The idea is to get to pay for that!
Anyone else remember this? I could sell a bit of stock
and cover
the opening bid, but I don't know what it would cost to move it.
So, you want to buy this for RCS/RI <g>? Shipping could be as little as a
couple thousand, if you rent a (big) truck.
William Donzelli
aw288(a)osfn.org
8:01 p.m.
Re:
> if your going to post this at least a brief
descrption for those of us
> that
> really dont care to navagate ebay.
Oops...sorry. My reply post was an IBM Series 1 (which might be old
enough to qualify as a "classic computer").
Stan Sieler sieler(a)allegro.com
www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler
5 Sep
5 Sep
11:25 a.m.
New subject: Need help on old parts??
Hi
I need some pinouts for some old TTL? or DTL? parts
These are in my computer and I think one of them is
causing a failure. These are all TI parts:
SN15846
SN15849
SN15861
SN15863
I am especially interested in the
SN15861 and SN15849.
Thanks
Dwight
2:30 p.m.
New subject: Need help on old parts??
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3:57 p.m.
New subject: Need help on old parts??
ard(a)p850ug1.demon.co.uk (Tony Duell) wrote:
Hi Tony
I received a pdf from one of the others on the list. The pdf shows
that the 861 is not exactly like the 7420, in that the unused pins
of the 7420 are for gate expansion on the 861. The circuit that uses the
part, I think is failing, doesn't use these pins. The biggest potential
problem I see is that the original designer used two outputs tied
together. This means that the other output has to pull it down
as well. I tried a 74LS20 and it didn't work but I think it is
just that the 74LS20's have a strong pull-up. I'll try to locate
a 7420 and give it a try. I've also found a part supplier that
stocks old DTL and even RTL parts. I haven't contacted them
yet but if the 7420 doesn't work I'll give them a try. They
have these in the Motorola part numbers. For others looking for old
parts, they are:
http://lansdale.com/~lansdale/index.html
I'm sure these will be expensive but then what the heck.
Thanks for the reply
Dwight
Hi
I need some pinouts for some old TTL? or DTL? parts
These are in my computer and I think one of them is
causing a failure. These are all TI parts:
SN15846
SN15849
SN15861
SN15863
THose are DTL chips. The generic number is the last 3 digits, 846, 849,
861, 863.
The 846 is a quad 2-input NAND gate, pinout as the 7400. I've found this
one in some old service manuals, so I am pretty sure of the pinout.
I also have a somewhat untrustworthy 'equivalents list' which confirms
that the 846 is similar to the 740. It says that the 849 is also a quad
2-input NAND with the same pinout, that an 861 is dual 4-input NAND,
pinout as the 7420, and that the 863 is a triple 3-input NAND gate,
pinout as the 7410.
I would treat that latter data with some suspicion, but it may be a start.
-tony
5:51 p.m.
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6:36 p.m.
New subject: Need help on old parts??
ard(a)p850ug1.demon.co.uk (Tony Duell) wrote:
No. Please don't wire-AND normal TTL outputs -- it won't work properly
all the time. It's marginal (and can damage the TTL chips involved).
There is an open-collector 4-input NAND in the TTL line. It's the 7422
(yes, I had to look it up). You could use one of those, along with a 2k2
(or thereabouts) pull-up resistor from the output to Vcc. Don't ask me
where to find a 7422, though.
Hi
Looks like the 7422 is what I need. I was thinking
this myself. The spec sheet I got says that it has
an internal 2K pullup. The other part also has this
so it should work without an additional resistor.
I can always add one but I would exect it will be
more than fast enough for this old machine.
I hope I can get to my local surplus shop before they close.
Thanks
7:27 p.m.
New subject: Need help on old parts??
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6 Sep
6 Sep
5:27 a.m.
New subject: NCR Sparc Slate, other scrap
One of the other guys at a scrap place nabbed a NCR Sparc, some kind of
slate/pen computer. Various forms of GO software etc., but I didn't get to
play around with it at all. So far no sign of a power supply, but otherwise
fairly complete. Lucky dog also grabbed a mac WGS95.
Zycad box got open up, maybe looted. Looks VME inside, still a very pretty
chassis outside.
My big item was a Sun GDM 20E20 monitor, now I just need to find the SVGA
adapter for it.
Kinda sad a dozen Mac SE computers came in and went straight to the junk area.
5 Sep
5 Sep
7:17 p.m.
New subject: Need help on old parts??
This is from the National Semiconductor TTL/DTL databook
from 1976 (Radio Shack edition)
NS lists them as DM946, 949,961,963 being direct replacements for the
SNxxxxx types
These are DTL of either the low power type (6k pullup) or the
normal type (2k pullup) The manual does not state the partnumbers
that are 6k or 2k but this must be evident from your circuit.
Pinouts
DM 946,949 (Same pinout) Quad two-input NAND
Gate1 IN = 1, 2 / OUT=3
Gate2 IN = 4,5 / OUT=6
Gate3 IN = 9,10 / OUT=8
Gate4 IN = 12,13/ OUT=11
DM961 Dual 4-input NAND with extension input (E)
Gate1 IN=1,2,4,5, / E=3 / OUT=6
Gate2 IN=9,10,12,13 / E=11/ OUT=8
DM963 Tripple 3-input NAND
Gate1 IN=1,2,13 / OUT=12
Gate2 IN=3,4,5 / OUT=6
Gate3 IN=9,10,11/ OUT=8
I suspect lead-7 being the GND and lead-14 being the Vcc
but I will not vouch for that. It will be obvious from the circuit.
Good luck
Sipke de Wal
----- Original Message -----
From: Dwight Elvey <elvey(a)hal.com>
To: <classiccmp(a)classiccmp.org>
Sent: Tuesday, September 05, 2000 6:25 PM
Subject: Need help on old parts??
Hi
I need some pinouts for some old TTL? or DTL? parts
These are in my computer and I think one of them is
causing a failure. These are all TI parts:
SN15846
SN15849
SN15861
SN15863
I am especially interested in the
SN15861 and SN15849.
Thanks
Dwight
6:39 p.m.
New subject: Need help on old parts??
"Sipke de Wal" <sipke(a)wxs.nl> wrote:
I suspect lead-7 being the GND and lead-14 being the Vcc
but I will not vouch for that. It will be obvious from the circuit.
Hi
Yes, that is the correct voltages. It is good to get the
National numbers as well.
Thanks
Dwight
1 Sep
1 Sep
11:07 p.m.
-> > if your going to post this at least a brief description for
-> those of us
-> > that
-> > really dont care to navigate ebay.
-> >
-> > Allison
->
-> Agreed!
->
-> However, it's a Cray Y-MP C90 and they want a starting bid of only
-> $35,000.00 on it. Oddly enough, no one has bid yet. Though that is
-> undoubtedly because it's only been up for about three hours.
I think the best part of this post is the link in the listing, Big Iron
in the Steel City.
NSF Awards $45 Million to Pittsburgh Supercomputing Center for
"Terascale" Computing
An unprecedented system located in Pittsburgh will be the most powerful
in the world available for public research.
http://www.psc.edu/publicinfo/news/2000/terascale-08-03-00.html
Compaq, 682 AlphaServers, Tru64 UNIX, NSF = 6 Teraflops anyone?
8879
days inactive
8884
days old
16 comments
10 participants
participants (10)
-
ajp166＠bellatlantic.net -
ard＠p850ug1.demon.co.uk -
aw288＠osfn.org -
elvey＠hal.com -
healyzh＠aracnet.com -
mikeford＠socal.rr.com -
sipke＠wxs.nl -
ss＠allegro.com -
vaxman＠uswest.net -
whdawson＠mlynk.com