Well, after wading thru miles of corporate red tape, and jumping several
Dilbertian hurdles, we managed to rescue two 11/44s and two 11/23s from a
Big Company in San Diego.
Marvin Johnston drove from Santa Barbara (and back!) to get the
machines, which are all in one 7' DEC rack. There is also an RL02, 1 (or
2?) SCSI drives attached to one of the /44s, about 20 RL02 packs, and a
Blue Wall. It appears the machines are running RSX.
I'll know more about them next week when I get them back up here to
Quincy in the northern Sierras.
Thanks go to Sellam who first alerted me to the deal *last year*, and of
course to Marvin who drove over 400 miles on very short notice...
More legacy machinery saved from the dumpster... if things work out I
am strongly considering exhibiting at least one of the /44s at VCF 5 -
along with a PR1ME 750 if we can get it's swap disk crankiness sorted out.
Cheers
John
Hi Bob,
Your work prompted me to spend some time on an assembler for the Imlac
and after a couple of nights of work on a brand new program, I can correctly
assemble the simple display program.
I will get you a copy once I clean up a couple of things. What kind of machine
would you like to run it on?
--tom
Hi John
Not all switcher are of the same high quality
as the ones you are testing. I've seen enough of them
that will turn the transistor on solid if the
the voltage is too low, in an attempt to bring the
output voltage up. This was more common in older
switchers than newer ones. Most are designed to
shut down, as John noted, now days. It wasn't
always that way.
Even so, there is little useful results of using
a variac on these new ones. The only capacitor that
you are bringing up slowly is the primary side filter.
The DC outputs will snap to level when the input
protection allows it.
Dwight
>From: "J.C. Wren" <jcwren(a)jcwren.com>
> "( note: don't use a variac on a switcher supply! )"
>
> Why not? We do it all the time, for checking what the low and high
voltage
>cut-off point of a switcher is. We also vary the frequency all over the
>place. I don't know switchers in general, but ours suddenly start
switching
>as the voltage hits 90V on the up-test, and about the same on the
down-test.
>
> It may not be *useful* do to so for testing the device, but it won't
cause
>any damage in any of the number of supplies we've tested.
>
> --John
>
>
>-----Original Message-----
>From: cctalk-admin(a)classiccmp.org [mailto:cctalk-admin@classiccmp.org]On
>Behalf Of Dwight K. Elvey
>Sent: Wednesday, September 25, 2002 18:16
>To: cctalk(a)classiccmp.org
>Subject: RE: Altair-what do I do first
>
>[ snip]
>
>( note: don't use a variac on a switcher supply! )
>Later
>Dwight
>
>
>
>
My condolences, Fred... Hopefully, through his contributions to the
computing community, he may have terminated, but his memory will stay
resident.
Will J
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I recently found what looked like a solid block of aluminium recently but on closer inspection it turned out to be a 64k x 18 core memory made by Quadri Corporation. It's part number is 1-0805-0015-02. It measures 1 1/2" x 6' x 9" and all the case parts are machined out of solid aluminium and it fits together so well that the joints are barely visible. It's very obviously military. It looks like it could survive WW III! I did some searching for Quadri and found that they used to be a manufacturer of high reliability core memory systems used in military aircraft, helicopters, tanks and other vehicles but they have been bought out by a company by the name of Agro-Tech and no longer exist. Does anyone know anything about the Quadri core memories or know anything about Quadri?
Joe
While looking through the pile of stuff I got with the PDP-8/E, I found a
tray of papertapes from 'ECRM, INC'. The tapes are labeled as follows:
5365 Board (Video Store) Diag (c) 1976 ECRM, Inc
5000 Series Panel Switches Diag (c) 1975 ECRM, Inc
BTCON 5000 (c) 1974 ECRM,
Inc
Beehive Terminal Diagnostic (c) 1975 ECRM,
Inc
ECRM Keyboard Diagnostic (c) 1976 ECRM, Inc
Dictionary Generator Program SW9122(G) (c) 1974 ECRM,Inc
AutoPrep 1 PaceSetter (c) 1974 ECRM,
Inc
Dictionary Generator Program SW9122(F) (c) 1974 ECRM, Inc.
5342 Board (Stok Search) Diag. (c) 1976 ECRM, Inc
5018 Board (Interrupt Mask) Diag (c) 1976 ECRM, Inc
5005 Board Serial Punch Diag (c) 1976 ECRM,
Inc
The use of some of these is obvious from the label, others are not. I am
assuming that the PDP-8/E was connected to something made by ECRM, but I
have no idea what. I do have one ECRM board, which is the 5005 Serial
Punch/Reader controller.
Does anyone know who ECRM is/was, and what kind of machine/system these
tapes might have been used with?
>WAP hacking is the new frontier. It's just too damn easy.
That makes it ideal for today's script kiddies... er um... sorry,
"hackers"... I wouldn't want to have one of those 13 year olds throw a
temper tantrum because I didn't use his prefered term.
-chris
<http://www.mythtech.net>
Hello, all:
While flipping through PC Magazine this morning, I noticed the
following quote on page 26 of the 10/15/02 issue:
"You might expect highly technical security advice from Kevin
Mitnick, whose alleged 1982 hack into NORAD inspired the movie War Games."
This is the first time I've seen this reference. Is this true?
Rich
