Hi, im sorry to say that I can't handle all this e-mail on my work e-mail
account. Can anyone tell me how to unsubscribe and resubscribe? I did not
bookmark the original web site address I was at when I first subscribed.
Thanks.
Todd
-----Original Message-----
From: John Foust [mailto:jfoust@threedee.com]
Sent: Monday, October 25, 1999 1:28 PM
To: Discussion re-collecting of classic computers
Subject: Did the list change?
I haven't received anything from this list in the last week or so.
As far as I know, nothing changed on my end. I've tried to send
'subscribe' and 'which' commands to the listproc, but I get no
response. Did something change at U-Wash?
- John
For those at home who have been following my relocation of stuff from the
basement of my former boss, I have *located* the 11/20 chassis. It has
some backplanes in it but no power supply. It is sitting on a BA-11 that
looks suspiciously of the same era, but too far down in the stack to get at
just yet. If so, then I have a CPU bay and two BA-11 expansion boxes, enough
FLIP-CHIPs to probably reassemble the CPU, several sets of 4K MM11-E boards
(at least one core plane is in the hands of a former cow-orker, now in Boston),
two power supplies total, a diode-matrix boot board, several peripheral cards
and plenty of modern stuff to make this thing boot. I do also happen to have
the original 1970 PDP-11 handbook that came with it, but no prints.
Does anyone have a module layout for the 11/20? BTW, since this has come
up recently, from the handbook, page viii
The PDP-11 is available in two versions -- PDP-11/0 and PDP-
11/20. The basic PDP-10 contains 1,024 words of read-only
memory inconjuction with 128 words of read/write memory and
the basic PDP-11/20 includes 4,096 words of read/write memory
I take it that the -11/20 has an MM11-E backplane in the CPU box and that
the -11/10 comes with an MR11-A braided core ROM unit and an MW11-A "Wordlet"
core board.
After this is entirely excavated, I would expect that I could use an
additional H720 PSU, but since I have the specs (+5V @ 12A, -15V @ 10A,
+8RMS (unreg) @ 1.5A, -22V (unreg) @ 1.0A) that I could fake it with
modern equivalents.
-ethan
=====
Infinet has been sold. The domain is going away in February.
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--- Don Maslin <donm(a)cts.com> wrote:
>
>
> On Tue, 26 Oct 1999, Mike Ford wrote:
>
> > I spent the weekend in San Diego...
> > ...One of the docs mentions a larger collection at one of the local
> > colleges in La Mesa. Next time I will try to investigate it further.
>
> Coleman College, which does nothing but computer training. It is on a
> frontage road on the north side of I-8 on the western outskirts of La
> Mesa.
I was there a year ago. It's got some interesting stuff including kits
built to spec and overbuilt locals. They have one PDP-8/e and no accessories
for it, as an example of somewhat common stuff they don't have in abundance.
Worth the trip if you are in the area. It's an hour or two walkthrough at
the most unless you find something you are *very* fond of staring at.
-ethan
=====
Infinet has been sold. The domain is going away in February.
Please send all replies to
erd(a)iname.com
__________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo.com
Okay... Before this degrades into a major thread of how badly AMF fubar'd
Harley Davidson, I'm going to declare a winner as seen in the following:
---
At 10:28 AM 10/26/1999 -0700, ss(a)allegro.com wrote:
>
>My guess:
>
> The "how to bowl this time" computer...the thing that determined
> where to light up the "arrow" that suggested the best way to
> make the spare.
>
>Stan
---
The actual name of the unit is the "Sparemaker" computer, but I won't hold
that against him. (that being a somewhat industry specific bit of trivia).
The smaller chassis latched the information from the pinsetter as to which
pins remained standing following the first ball and relayed this
information to the larger (computer) chassis which used the information to
determine which one of eleven possible colored indicator arrows should be
illuminated on the pin display (called the "pindicator" by AMF) to suggest
the shot with the best possibility of converting the spare. Once the
computation was complete, the solution was relayed back to the smaller
chassis (called the "ball path indicator") where it was latched for
display, thus freeing up the main computer to service requests from other
pinsetters.
I thought I had a picture of one in operation, but I can't put my hands on
it right at the moment, and it would take sometime to wire the computer up
just for this occasion... So, perhaps later...
One obvious (to some) shortcoming of the unit is that it always displayed
suggestions evaluated for right handed bowlers. There was no left handed
option...
In the installation/service manual for the unit, the calculation (logic)
sequence is detailed in a series of boolean equations. If anyone is
curious, I'll either scan the page or scribble them into a future message.
---
And now... the identity of this outings infamous 'no prize' (if indeed the
lucky winner wishes to claim it!) A slightly (ok, very) used, actual, for
real, AMF Bowling Pin! To claim it, drop me a note (off list) with your
address.
If not claimed, the pin will go back into the random prize pot possibly to
reappear in some future quiz.
Thanks to all who played - you never know when the next one will pop up!
-jim
---
jimw(a)computergarage.org
The Computer Garage - http://www.computergarage.org
Computer Garage Fax - (503) 646-0174
Gee... I just knew people would likely respond to the list... <g>
... and I knew the "AMF" ID Plate would start people guessing...
(which is why I left it in the image)
The comment "everyone knows that AMF is associated with Bowling and
Harleys" was interesting. Did anyone else see the AMF Analog Computer (!)
that went up on ePay a few months ago?
Now, more to the point - the guesses so far: (some by multiple people)
the pin setter computer (part that runs the pinsetter)
an automatic scorer computer
Both good guesses... and both incorrect!
But we have started down the right... (dare I, sure) ...alley... B^}
Round 2!
-jim
---
jimw(a)computergarage.org || jimw(a)agora.rdrop.com
The Computer Garage - http://www.computergarage.org
Computer Garage Fax - (503) 646-0174
On Oct 26, 17:38, Chris Kennedy wrote:
> Subject: Re: gauging interest in VAX 6000-530
> Mike Cheponis wrote:
> > Relevance to old iron? Because old iron had lots of busses, new ones
don't.
> >
> > Why is that?
>
> Because it isn't the case.
> Other examples include the
> Cray/whatever 6400 SMP, Pyramid Nile, Sequent S5000 and I suspect
> the SGI Challenge and HP T500, although I'd have to check.
Correct, the Challenge (and indeed even the Indigos and Indys) have a
separate GIO bus for various purposes. And SGI Origin machines have a
crossbar switch arrangement instead of a single bus, IIRC.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Figure about 1992-93 for that model. I used to have accounts on one when I
was at DEC.
<Looks like the 6500 was about 13 VAX-11/780 MIPS. That would make it abou
<2x to 3x slower than a 486DX2/66.
Not even close. More like a stack of a dozen or more of the 486s. It
usually ran between 30-50 VT1200 Xwindows type terminals under VMS 5.5
plus the usual batch load and plain terminal user base. I doubt a
486dx/66 running linux could support 50-100 50 users running web browsers
that smoothly while providing print services to 4-6 laser printers.
Since the group had some 486dx/50s we could compare. The 486 was slower
for any IO despite the SCSI, could not multitask well and was known for
crashing (w3.11) something uncommon the VAX world.
Apples and oranges, the VAX especially the bigger models with the CI and
other high perf IO busses can easily pound PCI pentiums into the ground
for shear load.
A 6000-530 is 40" corperate cabs typically 3-4 of them more depending on
the disks. Compared to a 780 its small. Compared to a 3100 it's huge.
You would need a 16ft truck, lift gate or ramps. Power, basic system will
run off a wall outlet barely if modded for single phase.
OS, ultrix a BSD derivitive some like it, some hate it, it runs. VMS is
the other OS commonly run and current (V7.2) is avaiable under hobbiest
license and supports the SMP.
Allison
<Perhaps not in a PC, but other micros have used asynchronous buses (like
<the native bus of the 68000, and VME bus).
I think you got that backwards. VME and 68k were synchronous. The PC
bus is async (as is s100, Multibus, U and Q busses)!
The sync/async bus thing is a fundemental moto/intel difference!
On the similarity plane... ISA is basically multibus with a few breakages
like the interrupt edge/level thing.
Allison
Hey, I have lots of CS/80 drives which I stil use at work with HP1000 E/f
series computers. I had a "CS/80 Programmers Manual" from HP which
described each command in detail. I am currently looking for my copy since
I wnt to do a little experimentation with using a PC with GBIP card to
emulate a CS/80 drive. If I find my manual I will let you know. In the
mean time, if anyone else digs up one of these babies, please tell me
John
