Newbie question----got a bunch of boards from HP terminals [2640 and
2645A's]
that I thought had either 8008 or 8080A chips----boards are marked
"processor" and the socketed processor chip is brown or white ceramic
with a gold "lid"---only markings are 1820-1701 on one line and I assume
a serial # on the next [7629P, 7707P, 78126GP, etc]--also has what looks
to be the AMD logo---up to the right slanting "arrow" shape.
Some of the identical looking boards do have 8008 or 8080A
installed---What do I have here??
Thanks, Craig
OK, I think I've pretty much decided that it's best to give a shot at
rebuilding the M8108. For one thing, it's going to be a lot cheaper. To
this end, could someone email me the prints for this board (or otherwise
direct me to a URL where they can be found)?
> > > Mine has a printed label across the top of the box labelling the slots,
> > > which says, on the slot containing the M8107, "If KT11C option [i.e.
the
> > > MMU] not present, use M8116 S J B in this slot."
> >
> > Is the M8116 a simple jumper (a la grant continuity card)? I think
that's
> > probably the best move to kludge one of those together, if it's simple
> > enough.
>
> No, it's a hex height card with address buffer chips on it. The schematic
> is not that complex, but the board is not just connections.
OK, unless it's really simple, I guess that's out.
> > Memory management is not all that important to me.
>
> It will be if you get any peripherals and want to run an OS.
Granted, but I think that's a long way off.. :-(
Thanks,
Michael
-----Original Message-----
From: Michael Robinson <robinm(a)rpi.edu>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Tuesday, March 07, 2000 11:07 PM
Subject: Re: PDP-11/45 Board Issues
>OK, I think I've pretty much decided that it's best to give a shot at
>rebuilding the M8108. For one thing, it's going to be a lot cheaper. To
>this end, could someone email me the prints for this board (or otherwise
>direct me to a URL where they can be found)?
I haven't been following this list lately but....
I just set aside a set of 11/45 boards for Kevin McQuiggin here... if you
can wait a couple of days, there is a strong chance I can come up with a set
(or at least replace the bad boards) for you. Please contact me off the
list.
I have a PDP-11/45 with FPU running (just got the fast memory!).. nice mini
to play on.
john
PDP-8 and other rare mini computers
http://www.pdp8.com
You're quite right, Hans, people try to "get by" whenever they can. English
as used in the U.S. is a special case, however. For the convenience of the
ever-lower-educated personalities in the media, the functional vocabulary
the part people routinely use ) has shrunk from about 100 words to
somewhere near 35. That leads to contextual definition of those words,
which, in turn, gives rise to comments such as "... it depends on what your
definition of 'is' is ... " as used by our slippery chief executive. People
still have all the same things to say. They just use fewer words with which
to say them. This leads to a really poor communication process, and it's
VERY pervasive, i.e. it shows up in all phases of life. Of course, it's
wonderful for lawyers, since they get to collect money for arguing out what
we meant when we entered into an agreement.
Dick
-----Original Message-----
From: Hans Franke <Hans.Franke(a)mch20.sbs.de>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Wednesday, March 08, 2000 4:47 AM
Subject: Re: VCF Europa Update
>> It hasn't helped me. I took 5 years of college German and speak less than
>> the average German 2 year old. Honestly, it's humiliating, because I'm
>> still in the habit of telling people that I know some German...only to
>> stumble on the most basic words and sentence structure. I think it would
>> come back pretty quick, but I don't have the time (or energy) to study it
>> on my own, and very little opportunity to use it in a practical setting
>> (despite Hans' brave attempt to try to understand my gibberish).
>
>That's part of the deal - if you pretend to understand
>my English, I'll do the same about your German... :))
>
>No, serious, German isn't that hard to learn, millions
>of kids over here are proof that it's easy enough to
>be done even at toddlers age :))
>
>Well, Now realy serious: All you missing is some practice
>so come over for VCFe and help Sallam in his speech.
>
>Gruss
>H.
>
>--
>VCF Europa am 29./30. April 2000 in Muenchen
>http://www.vintage.org/vcfe
>http://www.homecomputer.de/vcfe
Craig Smith <ip500(a)roanoke.infi.net> wrote:
> Newbie question----got a bunch of boards from HP terminals [2640 and
> 2645A's]
> that I thought had either 8008 or 8080A chips----boards are marked
> "processor" and the socketed processor chip is brown or white ceramic
2640 (and maybe 2644, I can't remember) terminals have 8008s,
2641/2645/2648 terminals have 8080s (on different processor boards of
course). An 8080 would likely be in a 40-pin DIP (Dual In-line
Package, meaning two rows of pins). An 8008 would be in a smaller
DIP but I can't remember how small off the top of my head.
> with a gold "lid"---only markings are 1820-1701 on one line and I assume
> a serial # on the next [7629P, 7707P, 78126GP, etc]--also has what looks
18xx-xxxx is an HP component part number (if you buy enough chips, you
can get the manufacturer to stamp them with your part number too), and
the 7xxx is probably a date code (two digits of year and two digits of
week-within-year).
> to be the AMD logo---up to the right slanting "arrow" shape.
> Some of the identical looking boards do have 8008 or 8080A
> installed---What do I have here??
Some boards made with HP house-marked AMD parts, some boards made with
Intel parts?
-Frank McConnell
On March 7, Frank McConnell wrote:
> 2640 (and maybe 2644, I can't remember) terminals have 8008s,
> 2641/2645/2648 terminals have 8080s (on different processor boards of
> course). An 8080 would likely be in a 40-pin DIP (Dual In-line
> Package, meaning two rows of pins). An 8008 would be in a smaller
> DIP but I can't remember how small off the top of my head.
It's an 18-pinner if I recall correctly.
-Dave McGuire
Don't feel bad about your inability to speak German after only a few years'
formal education. Nowadays, American students aren't even taught enough
about their own language, a version of English, that they can read a few
paragraphs and understand what it was about, nor can they write more than a
paragraph about a single subject, before the "stream of consciousnes" takes
over and all purpose is lost.
I have two boys in their first few years of "higher" education and, having
met some of the people now entrusted with passing along an "education" to
them and others, I find them sadly lacking. They speak badly, read little
and fail miserably to express themselves succinctly and coherently in
writing. Current generation textbooks are showing the decline of the spoken
language here.
Sadly, the average German 15-year old not only speaks better German than our
average 35-year-old speaks english, but he speaks better English than that
same 35-year-old. Fifteen years ago, the average American had sufficient
command of English that he routinely used on the order of a hundred words to
express himself. Today's average is closer to 35 words. No wonder nobody
knows what's being said!
If you're making an honest effort in Europe, people will put up with your
deificiencies. If you expect them to speak your language, you're in for a
hard time.
Dick
-----Original Message-----
From: Aaron Christopher Finney <af-list(a)wfi-inc.com>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Tuesday, March 07, 2000 9:00 PM
Subject: Re: VCF Europa Update
Christian,
It hasn't helped me. I took 5 years of college German and speak less than
the average German 2 year old. Honestly, it's humiliating, because I'm
still in the habit of telling people that I know some German...only to
stumble on the most basic words and sentence structure. I think it would
come back pretty quick, but I don't have the time (or energy) to study it
on my own, and very little opportunity to use it in a practical setting
(despite Hans' brave attempt to try to understand my gibberish).
I still have a large bookshelf full of German classics; someday, someday.
Aaron
> Servus Hans,
>
> I warned Sellam about this but he said he's willing to go ahead with it!
> ;-) The cat's out of the bag now! I know well what it's like to try to
> learn German and after about eight years of periodic, unofficial, random
> self-teaching I can just about speak short simple sentences. If German was
> still taught in the schools around here I would have attempted to get
> tutoring would be much better I think. If he does in fact come to
> understand spoken High German he'll get confused hearing the Bavarian
> tongue though. I know! ;-) Heh heh heh . . .
>
> Bis sp?ter, Chris
> -- --
> Christian Fandt, Electronic/Electrical Historian
> Jamestown, NY USA cfandt(a)netsync.net
> Member of Antique Wireless Association
> URL: http://www.antiquewireless.org/
>
Hello all,
My electronics club recently became the proud owner of a PDP-11/45.
Unfortunately, it's not in the best of condition. One of the boards, an
M8108 (apparently a memory-managment module) is damaged. Well, actually, it
is split in two along the card fingers. After some careful inspection, I
have determined that it's probably not possible to repair.
Anyone know what will happen if I fire up the machine without this board?
We have no peripherals, so we're basically interested in toggling in code
and will be satisfied without an OS. If we exclude this card, do we need to
toss a NPG card into that spot?
Before anyone asks, no, we don't have the printsets. I think this machine
is second-second hand, so the previous owner (RPI) didn't have the prints
either. Much of what we know of this machine has been determined with a
continuity checker...
Michael Robinson
robinm(a)rpi.edu
RPI Electronics Club
I can't tell you much about this but I've had countless HP boards with part
numbers of 1820-something.
I went to the trouble of getting a cross-reference for IBM part numbers when
I was working on their stuff, (their numbers were 237-xxxx) but I've never
had enough HP stuff to warrant the effort.
Dick
-----Original Message-----
From: Craig Smith <ip500(a)roanoke.infi.net>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Tuesday, March 07, 2000 6:39 PM
Subject: AMD 1820-1701
>Newbie question----got a bunch of boards from HP terminals [2640 and
>2645A's]
>that I thought had either 8008 or 8080A chips----boards are marked
>"processor" and the socketed processor chip is brown or white ceramic
>with a gold "lid"---only markings are 1820-1701 on one line and I assume
>a serial # on the next [7629P, 7707P, 78126GP, etc]--also has what looks
>to be the AMD logo---up to the right slanting "arrow" shape.
> Some of the identical looking boards do have 8008 or 8080A
>installed---What do I have here??
> Thanks, Craig
Tom Jennings has an Otrona Attache, "not 8:16, plain CP/M, in
great shape with one small exception, with manuals and lots
of software." He's got it on eBay now but there's no action
so far, so if it doesn't find a bidder he'll release it for
shipping and handling from Tucson, AZ. Contact him at <tomj(a)wps.com>.
- John
