2 Oct
2019
2 Oct
'19
10:18 a.m.
Hi,
Jon wrote:
I have 15 pieces of memory SIMMs for the Challenge M
series
(funny, seems like there should be an even #). Pics here :
http://pico-systems.com/images/SGIChallenge.JPG
A Challenge M is basically a server variant of an Indigo2.
What you have looks like memory for a Challenge L or Onyx.
Dennis
2 Oct
2 Oct
6:25 p.m.
On 10/02/2019 12:18 PM, Dennis Grevenstein via cctech wrote:
Hi,
Jon wrote:
OK, it was some time ago, it well could be a Challenge L.
it was a big box, and was powered by a big 28 V power
supply. (Or, was it a 48 V supply?)
Jon
I have 15 pieces of memory SIMMs for the
Challenge M series
(funny, seems like there should be an even #). Pics here :
http://pico-systems.com/images/SGIChallenge.JPG
A Challenge M is basically a
server variant of an Indigo2.
What you have looks like memory for a Challenge L or Onyx.
6:53 p.m.
New subject: ECL static RAM ( 10144L)
I have 400 pieces of Signetics 10144L ECL static RAM chips.
Anybody need some?
These were salvaged from boards by a surplus dealer
(Alltronics, I think).
They are a 256 X 1 bit RAM, somewhere around 20 ns access
time, ceramic package.
Jon
8:23 p.m.
New subject: ECL static RAM ( 10144L)
At 08:53 PM 2/10/2019 -0500, you wrote:
I have 400 pieces of Signetics 10144L ECL static RAM
chips.
Anybody need some?
These were salvaged from boards by a surplus dealer
(Alltronics, I think).
They are a 256 X 1 bit RAM, somewhere around 20 ns access
time, ceramic package.
Jon
I don't 'need' them, but would like them if no one else wants.
Have the data, Motorola MCM10144.
Some questions:
* By 'salvaged' do you mean desoldered, or socket pulls with clean pins?
* What are the legs like? Still maleable, or do they have pin rot?
(in which corrosion under the plating makes the pins brittle and
very easily breaking off.)
* Whats the packing? Jumbled, in tubes, pinned in mat?
Cost?
Postage would be to LA, in CA.
7 p.m.
New subject: Nat Semi MM5262N available
I have about 240 pieces of the national Semiconductor
MM5262N 2K x 1 DRAM chips.
They appear to be unused, in aluminum (not plastic) tubes.
Chips are plastic packaged.
365 ns access time, 475 ns read cycle.
Anybody need them to fix an old computer?
Jon
3 Oct
3 Oct
9:34 a.m.
OK, it was some time ago, it well could be a Challenge
L. it was a big box,
and was powered by a big 28 V power supply. (Or, was it a 48 V supply?)
Jon
It should be 48v. A 9uish VME style card cage. The Challenge XL / Full
rack Onyx and the Onyx / Challenge L should all share the same memory.
All those machines are pretty cool.
--
: Ethan O'Toole
1690
days inactive
1691
days old
5 comments
4 participants
participants (4)
-
dennis.grevenstein＠gmail.com -
elson＠pico-systems.com -
ethan＠757.org -
guykd＠optusnet.com.au