That would be a 4K x 12 bit core stack, fits 8/I, various other negi/posibus
12 bitters as well, I believe. Definetly works with 8/I's.
Will J
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It's a standard DEC PDP-8 core plane that was many
be one of many subcontractors. However if it's 5 boards
it's an older non Omnibus PDP-8. The standard 8/e/f/m
omnibus memory is three cards with an over the top
connector set. One of the boards would be G111.
Allison
-----Original Message-----
From: Eric Dittman <dittman(a)dittman.net>
>I was looking around my box of old boards and
>found a core memory set I've had since about
>'84. It was a leftover from an old system
>that had been surplussed. I think the system
>was a PDP-8 of some sort, but I don't know for
>sure. The memory set consists of a SENSE board
>and an INHIBIT board connected to the sandwich
>layer of five board containing th core. There
>is a label with the following:
>
>EM electronic memories
>a division of electronic memories & magnetics corporation
>
> 4KX12 CORE MEMORY STACK
> 270321 47071MW
>
>P/N 906819-A04 S/N xxxxx
>C/N TS906819A D/C 5272
>
>There is an actual serial number, but the first
>digit is torn.
>
>The plastic strain relief strips and the card edge
>handles both have "DIGITAL EQUIPMENT CORPORATION"
>and "MAYNARD, MASSACHUSETTS" on them. The handles
>also has "W025" on them.
>
>Is this a PDP-8 board, and was it an OEM part
>supplied to DEC or from DEC?
>--
>Eric Dittman
>dittman(a)dittman.net
Is anyone interested in such a thing? I have the screen (no keyboard)
portion of the terminal. My
undesrtanding is that the terminals were hi-res graphics terminals (for
the time) and quite expensive.
The unit is quite heavy, and it is taking up space. I figured I'd try
and eBay it if I had the keyboard, but
since I don't I figured I ask here.
Eric
-----Original Message-----
From: Jonathan Engdahl <engdahl(a)cle.ab.com>
>At boot-up, right after it tells me about how much memory I have, it
starts spitting gibberish. If I tell Kermit (my console) to switch to 7
bits even parity, I can read stuff again. It appears that the OS is
changing the line parameters. Does this make sense? If so, where do I
find the file with this config in it? I grepped for "stty" in / and /etc
but didn't find anything useful looking.
Yes, unix likes to do that. Very annoying as that is not the standard for
most DEC
configs. My V7 system also does that.
>I still can boot RT-11 from the floppy, but when I try to boot UNIX from
the hard drive it halts. I did "dd if=/mdec/rauboot of=/dev/ra0a count=1"
per Steve Schultz's instructions, but it still won't boot. I can download
Warren's boot.dd via VTserver, and type "ra(0,0,0)unix", and UNIX starts
right up, so the only problem is the boot sector. It used to boot RT-11
>from hard drive fine, before I clobbered it with UNIX. The only catch is
that I have to toggle HALT and say "171000G" (there's a boot ROM on the
disk controller) because the CPU boot ROMs at 173000 are some goofy
DECserver stuff. Any ideas?
Same problem, I have to boot foreign from RT11. I'd say their boot
doesnt fit
the expected pattern for PDP-11 (microPDP-11) boot block.
>I need a way to download the rest of the UNIX tar files over the console
line. VTserver's documentation sort of stops after booting up the root
image. Where do I go from here? Is there some built-in way of using a
serial line driver like a tape, such as "tar xvf /dev/tty"?
Same problem. You need to send a binary file over a 7bit serial line.
Allison
I was looking around my box of old boards and
found a core memory set I've had since about
'84. It was a leftover from an old system
that had been surplussed. I think the system
was a PDP-8 of some sort, but I don't know for
sure. The memory set consists of a SENSE board
and an INHIBIT board connected to the sandwich
layer of five board containing th core. There
is a label with the following:
EM electronic memories
a division of electronic memories & magnetics corporation
4KX12 CORE MEMORY STACK
270321 47071MW
P/N 906819-A04 S/N xxxxx
C/N TS906819A D/C 5272
There is an actual serial number, but the first
digit is torn.
The plastic strain relief strips and the card edge
handles both have "DIGITAL EQUIPMENT CORPORATION"
and "MAYNARD, MASSACHUSETTS" on them. The handles
also has "W025" on them.
Is this a PDP-8 board, and was it an OEM part
supplied to DEC or from DEC?
--
Eric Dittman
dittman(a)dittman.net
FIrstly a word of warning. A microwave oven is by far the most
dangerous
thing you're ever likely to work on. The power supply can provide
about
4kV at a significant fraction of an amp. This will kill you if you
touch
it. Not 'might kill you', but 'will kill you'.
It is a _lot_ more dangerous than the EHT supply in a monitor or TV,
for
example.
It doesn't hurt as much as a 27KV CRT EHT, or the 5KV (20A) sub mod supply.
Lee.
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I've spent part of this afternoon sorting through my collection of cable,
discarding (to my wife's amazement, and very likely to my future regret)
things I have too much of (5m lengths of CW1308 phone cable) or will never
need (very short lengths of ribbon cable, twinflex, 3-core -- why did I
keep *them*?)
I've found a DEC cable I can't identify. It's labelled BC99J, and consists
of a 40-pin Berg connected to about 2m of black multicore, which goes into
a rectangular potted box, about 6" x 3" and about 0.5" thick. Out of the
other side of the box is about 4m of the same black multicore, with the end
cut off. The label is date-stamped 12/6/78. Anyone know what this is/was?
--
Pete Peter Turnbull
Network Manager
University of York
The problem trying to remove the odor of cigarette smoke is that nicotine is
not water soluble. I once cleaned our families smoke eater with kerosene to
remove the nicotine from the electrostatic plates.
I don't remember the name but there is a cleaner used on electronics that's
made from orange peels.
pointer to degreaser made from citrus peels
http://www.dep.state.fl.us/dwm/programs/p2/factsheets/6terpene.pdf
More information about commercial product.
http://www.ecki.com/vst/prdt487.htm
Mike
mmcfadden(a)cmh.edu
Electronic mail from Mike McFadden at The Children's Mercy Hospital,
mmcfadden(a)cmh.edu. This communication is intended only for the use of the
addressee. It may contain information which is privileged or confidential
under applicable law. If you are not the intended recipient or the agent of
the recipient, you are hereby notified that any dissemination, copy or
disclosure of this communication is strictly prohibited. If you have
received this communication in error, please immediately notify The
Children's Mercy Hospital at 816-234-3454 or via return Internet electronic
mail at mmcfadden(a)cmh.edu and expunge this communication without making any
copies. Thank you for your cooperation.
At 06:54 PM 5/25/01 -0400, joe wrote:
> Shoot! Usually they just pull and trash the hard drive :-( I don't know what happens to the books but it's rare to get manuals with ANYTHING that gets surplused. I've heard rumors that because of copyright laws (or some othe lame reason) they can't "re-sell" the manuals and have to destroy them. Does anyone know what the exact reason is?
Yes, it's the software licenses. As a blanket policy to
protect themselves from lawsuits, no doubt, all the docs
and software is trashed. (I haven't found that Dumpster yet.)
They sell PCs but without operating systems. This is a
rotten situation all around. Instead of encouraging
people to recognize that software is intellectual property
that can be bought and sold, it encourages them to find
the pirate brother-in-law who can fix up this computer
for them in an evening.
- John
Hi there,
I've recently been given an Apollo DN 5500 (*) system which is lacking a
mouse. The keyboard does have a DB9F connector, but I suspect that I need
some special mouse. Can anyone tell me if and where I could get such a beast?
Thanks,
Hans
(*) The type label of the machine says "Domain Series 4000", but the machine
has a 68040, so I suspect that it is a DN5500. Please correct me if I'm
wrong.
--
finger hans(a)huebner.org for details
