> From: "Jeffrey S. Sharp" <jss(a)ou.edu>
> To: "PUPS Mailing List" <pups(a)minnie.cs.adfa.edu.au>
> Subject: [pups] Cabinet Questions
> Date: Tue, 20 Mar 2001 01:30:38 -0600
>
> In the peripherals manual, the H960 cabinet comes in two models: the -C and
> the -D. The -D model has a sliding drawer in the lower half of the cabinet
> that provides space for 9 "system units". What are these "system units"?
> How big are they? What goes there? When do you need the -D model?
A system unit (SU) was the fundamental hardware building block of an
11/20 and many subsequent PDP's. It was a frame 16.5 inches by 2.25
inches that held 3 blocks of dual card sockets. Each socket block was
nominally 5.25 inches by 2.00 inches and could hold four "dual" cards
spaced at 0.5-inch intervals. Thus the whole SU could hold four "quad"
cards plus two "dual" Unibus connectors in its four rows by six
sockets. Later production included a double-wide system unit that
could hold nine cards.
Typical things that came built into one SU include 4kW (8kB) of core
memory and RK05 disk controllers. There were also SU's that were
pre-wired to hold four Small Peripheral Controllers (SPC's). Typical
SPC's included single-line serial interfaces, and line-printer controllers.
Think of the H906-D as an 11/40 or 11/45 without any backplane or cards.
> Let's say I want to ultimately build a 11/70 system with a TE16/TM03 (in its
> own cabinet, I guess), a TU56/TC11, a paper tape reader/punch (PC11?), 3 or
> 4 RK05s, and 1 or 2 RP04s. What set of cabinets do I need for this system?
> Assume the CPU has the SETASI memory upgrades and not core.
>
> Una vez mas... Let's say I want to ultimately build a 11/40 system with the
> same peripherals as above minus the RP04s and with a TU10/TM11 as the
> 9-track. What kind of cabineting do I need here? Assume the CPU has MOS
> memory and not core.
I think you could put that system into two H960 racks. Figure 1/2 of a
rack for the 11/40, 1/3 of a rack for the TU10. RK05, PC11, TU56 each
take up 1/6 of an H960. With MOS memory you should have plenty of room
in the 11/40 frame itself for the necessary one-SU controllers for
RK05, TU56. Especially if you take out the 2-SU frame that originally
held the core memory. I'm not sure where you put the TM11, I never
actually had a real one, just emulated controllers that fit in one SU.
> Finally, how much weight can a H960 support?
Probably 500 or 600 pounds. If you can, look for the older H960's with
welded frames rather than pop rivets.
carl
--
carl lowenstein marine physical lab u.c. san diego
clowenstein(a)ucsd.edu
Many thanks to those of you who have answered my previous questions. I have
obtained the 1976 peripherals manual, and have read just enough to bring up
the next set of questions. This round is about cabineting.
In the peripherals manual, the H960 cabinet comes in two models: the -C and
the -D. The -D model has a sliding drawer in the lower half of the cabinet
that provides space for 9 "system units". What are these "system units"?
How big are they? What goes there? When do you need the -D model?
Let's say I want to ultimately build a 11/70 system with a TE16/TM03 (in its
own cabinet, I guess), a TU56/TC11, a paper tape reader/punch (PC11?), 3 or
4 RK05s, and 1 or 2 RP04s. What set of cabinets do I need for this system?
Assume the CPU has the SETASI memory upgrades and not core.
Una vez mas... Let's say I want to ultimately build a 11/40 system with the
same peripherals as above minus the RP04s and with a TU10/TM11 as the
9-track. What kind of cabineting do I need here? Assume the CPU has MOS
memory and not core.
I've got guesses, but I'd like to keep them private to save myself the
embarassment. :-)
Finally, how much weight can a H960 support?
--
Jeffrey S. Sharp
jss(a)ou.edu
"One World, One Web, One Program" -- Microsoft advertisement
"Ein Volk, Ein Reich, Ein Fuhrer" -- Adolf Hitler
Received: (from major@localhost)
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id UAA28053
for pups-liszt; Tue, 20 Mar 2001 20:02:44 +1100 (EST)
(envelope-from owner-pups(a)minnie.cs.adfa.edu.au)
>From "Jeffrey S. Sharp" <jss(a)ou.edu> Tue Mar 20 19:01:35 2001
Received: from mail6.mmcable.com (fe6.rdc-kc.rr.com [24.94.163.53])
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id UAA28049
for <pups(a)minnie.cs.adfa.edu.au>; Tue, 20 Mar 2001 20:02:41 +1100 (EST)
(envelope-from jss(a)ou.edu)
Received: from station1 ([65.26.237.187]) by mail6.mmcable.com with Microsoft SMTPSVC(5.5.1877.537.53);
Tue, 20 Mar 2001 02:54:02 -0600
Message-ID: <003501c0b11c$5ddae0c0$0a01a8c0@station1>
From: "Jeffrey S. Sharp" <jss(a)ou.edu>
To: "ClassicCmp Mailing List" <classiccmp(a)classiccmp.org>,
"PUPS Mailing List" <pups(a)minnie.cs.adfa.edu.au>
Subject: [pups] PDP-11/70 Front Panel
Date: Tue, 20 Mar 2001 03:01:35 -0600
MIME-Version: 1.0
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 5.50.4133.2400
X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400
Sender: owner-pups(a)minnie.cs.adfa.edu.au
Precedence: bulk
I will be picking up a PDP-11/70 in a few weeks, but it needs a front panel.
If anybody has an extra, please e-mail me.
--
Jeffrey S. Sharp
jss(a)ou.edu
Can someone enlighten me regarding DEC SDI cabling? Here's
what I have:
RA81 disk drive with two big black cables coming out of it, one for
each port (A/B). The cables terminate at the drive on one end and
at a small metal box on the other end. The small metal box has
two sockets on it (denoted with "*" in the picture below):
Small metal box
/
+----------+ "A" cable /
| RA81 |------------[]*
| Drive |------------[]*
+----------+ "B" cable
UDA50 controller in 11/44 with four sets of orange cables coming out
of it and terminating in a four-port socket set (denoted "*" in picture
below) in a larger metal box at the back of the cabinet:
Larger metal box
/
/
*[]_________
*[]_________\
*[]_________\\ <- Four (4) Cable groups
*[]_________\\\
\\\\
----------
| UDA50 |
| |
----------
What I have tried:
I unscrewed the black cables from the small metal box
and plugged one of them directly into one of the ports on
the larger metal box:
+----------+ "A" cable
| RA81 |----------------|
| Drive |----------[]* |
+----------+ "B" cable |
/ Larger metal box
/ /
| /
|-*[]_________
*[]_________\
*[]_________\\ <- Four (4) Cable groups
*[]_________\\\
\\\\
----------
| UDA50 |
| |
----------
That didn't work (I tried it with two different drives and cable sets).
The operating system (2.11BSD) sees the UDA50 but does not see the drive
(which is spun up and "ready").
I did a little searching on the internet and found a couple of
cryptic discussions. What I surmised from the discussions was that you
cannot directly connect the drive cable to the bulkhead box on the
computer cabinet. It seems you need a third cable to act as an
intermediary as such:
Small metal box
/
+----------+ "A" cable /
| RA81 |----------[]*---|
| Drive |----------[]* | <--- New THIRD ("external?") cable
+----------+ "B" cable |
/ Larger metal box
/ /
| /
|-*[]_________
*[]_________\
*[]_________\\ <- Four (4) Cable groups
*[]_________\\\
\\\\
----------
| UDA50 |
| |
----------
Is that right? If so, where can I find one of these external cables and/or
is it possible to manufacture one from a bit of ribbon cable an a
couple of commonly available plugs? The sockets denoted by "*" appear to
be AMD bastardizations of common PC board plugs like the ones one would
find connecting a console port plug.
Thanks!
greg
Gregory Travis
Cornerstone Information Systems ATS
greg(a)ciswired.com
812 330 4361 ext. 18
I'd been having a weird problem trying to compile mkconf.c, as a first step toward rebuilding 6th Ed, and someone suggested that it might be a memory problem. I dug out the XXDP disks I have, ran some diagnostics, and discovered that my illusions about my memory were ill-founded. :-) Fortunately, I had another MOS memory card, which I configured and installed. Now cc completes with no problems, and I rebuilt the system! It was weird that the system seemed to run fine, but a defect somewhere in the second 64k was causing a failure in cc.
Of course, there's always a challenge. Now I'm trying to build/install a filesystem on my big Plessey DD-11/80 drives; they seem something like an RP04, and use the CDC 9877 diskpacks, if anyone's heard of them. I built my kernel using the hp driver, and that doesn't seem to work with it. -- Ian
On Mar 7, 7:59, Gregory R. Travis wrote:
> Thought about that too but the math doesn't work. 40+64 chips = 104
> chips * 65536 bits per chip = 6815744 total bits.
>
> 6815744 doesn't divide cleanly by any of 9, 18, 19, 36, or 38
It divides by 13, though (64K x 13 x 8, so the prime factors are 2 and 13).
Unlikely as it sounds, could this be for a 12-bit word machine?
13 is not only 12+1, it's 8+5. 5 is a common number of bits for ECC
(though not, I admit, for 8-bit words! Usually it's 8+3, 16+5, or 16+6).
It also strikes me as odd that a NatSemi board should have TI chips on it.
NatSemi made their own RAM, and Texas made their own PDP-11 and Vax memory
boards.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Greg,
> Thought about that too but the math doesn't work. 40+64 chips = 104
> chips * 65536 bits per chip = 6815744 total bits.
>
> 6815744 doesn't divide cleanly by any of 9, 18, 19, 36, or 38
Right... 12 bits of ECC seems a bit much. Dunno what that stuff is
about... weird! ;)
Fred
**********************************************************************
This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom they
are addressed. If you have received this email in error please notify
the system manager.
This footnote also confirms that this email message has been swept by
MIMEsweeper for the presence of computer viruses.
www.mimesweeper.com
**********************************************************************
Received: (from major@localhost)
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id IAA27971
for pups-liszt; Thu, 8 Mar 2001 08:20:35 +1100 (EST)
(envelope-from owner-pups(a)minnie.cs.adfa.edu.au)
>From Carl Lowenstein <cdl(a)mpl.ucsd.edu> Thu Mar 8 07:15:48 2001
Received: from chiton.ucsd.edu (chiton.ucsd.edu [192.135.238.128])
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id IAA27966
for <pups(a)minnie.cs.adfa.edu.au>; Thu, 8 Mar 2001 08:20:30 +1100 (EST)
(envelope-from cdl(a)mpl.ucsd.edu)
Received: (from cdl@localhost)
by chiton.ucsd.edu (8.9.3/8.9.3) id NAA15151;
Wed, 7 Mar 2001 13:15:48 -0800 (PST)
Date: Wed, 7 Mar 2001 13:15:48 -0800 (PST)
From: Carl Lowenstein <cdl(a)mpl.ucsd.edu>
Message-Id: <200103072115.NAA15151(a)chiton.ucsd.edu>
To: greg(a)ciswired.com, pups(a)minnie.cs.adfa.edu.au
Subject: Re: [pups] Spares, et. al for 11/44 system
Sender: owner-pups(a)minnie.cs.adfa.edu.au
Precedence: bulk
> Date: Tue, 6 Mar 2001 20:07:00 -0500 (EST)
> From: "Gregory R. Travis" <greg(a)ciswired.com>
> To: pups(a)minnie.cs.adfa.edu.au
> Subject: [pups] Spares, et. al for 11/44 system
>
>
> p.s. The Nat. Semi board is a bit strange. It has an area of
> 16x4 TI 64K-bit chips (i.e 64x64k/8 = .5MB) and another
> area of 10x4 TI 64K-bit chips (i.e. .3MB). No matter
> what I do, I can't do the math to get this board to
> fit into a 256/512/1MB size. I ASSUME it's a .5MB
> board, but what about the extra chips?
Nat.Semi. used to make ECC memory boards for the PDP11.
I had one once, it looks like you have one now. My arithmetic says 5
extra bits per 8-bit byte makes for single-error correcting, dual-error
detecting ECC on the byte level. Vaxes do it with 39 bits per 32-bit
word, Alphas do it with 72 bits per 64-bit word. Economy of scale.
As I remember, you could just ignore the ECC and it would work like
a standard parity memory board, except that it very rarely had any
parity errors.
carl
carl lowenstein marine physical lab u.c. san diego
{decvax|ucbvax} !ucsd!mpl!cdl cdl(a)mpl.ucsd.edu
clowenstein(a)ucsd.edu
Received: (from major@localhost)
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id SAA32608
for pups-liszt; Thu, 8 Mar 2001 18:55:06 +1100 (EST)
(envelope-from owner-pups(a)minnie.cs.adfa.edu.au)
On Mar 6, 20:07, Gregory R. Travis wrote:
The three RL02s also all accept power and come on. However, they
> all illuminate their fault light when power is applied. I cannot
> remember if RL02s will do this when not connected to their
> controller - anyone?
Yes, that's what happens if either the terminator or the controller is not
connected.
> p.s. The Nat. Semi board is a bit strange. It has an area of
> 16x4 TI 64K-bit chips (i.e 64x64k/8 = .5MB) and another
> area of 10x4 TI 64K-bit chips (i.e. .3MB). No matter
> what I do, I can't do the math to get this board to
> fit into a 256/512/1MB size. I ASSUME it's a .5MB
> board, but what about the extra chips?
Is it ECC memory?
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Received: (from major@localhost)
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id AAA25238
for pups-liszt; Thu, 8 Mar 2001 00:04:29 +1100 (EST)
(envelope-from owner-pups(a)minnie.cs.adfa.edu.au)
>From "Gregory R. Travis" <greg(a)ciswired.com> Wed Mar 7 22:59:46 2001
Received: from goby.ciswired.com (IDENT:root@goby.ciswired.com [206.97.67.65])
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id AAA25234
for <pups(a)minnie.cs.adfa.edu.au>; Thu, 8 Mar 2001 00:04:25 +1100 (EST)
(envelope-from greg(a)ciswired.com)
Received: from weasel.ciswired.com (root(a)weasel.ciswired.com [206.97.67.73])
by goby.ciswired.com (8.8.7/8.8.7) with ESMTP id HAA21274;
Wed, 7 Mar 2001 07:51:29 -0500
Received: from localhost (greg@localhost)
by weasel.ciswired.com (8.9.3/8.9.3) with ESMTP id HAA21599;
Wed, 7 Mar 2001 07:59:46 -0500
X-Authentication-Warning: weasel.ciswired.com: greg owned process doing -bs
Date: Wed, 7 Mar 2001 07:59:46 -0500 (EST)
From: "Gregory R. Travis" <greg(a)ciswired.com>
To: "Fred N. van Kempen" <Fred.van.Kempen(a)microwalt.nl>
cc: pups(a)minnie.cs.adfa.edu.au
Subject: RE: [pups] Spares, et. al for 11/44 system
In-Reply-To: <6F63E31101C6D41196490008C7B2BFC32D32(a)mwnt4.microwalt.nl>
Message-ID: <Pine.LNX.4.10.10103070756400.21204-100000(a)weasel.ciswired.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-pups(a)minnie.cs.adfa.edu.au
Precedence: bulk
On Wed, 7 Mar 2001, Fred N. van Kempen wrote:
> Hi,
>
> > p.s. The Nat. Semi board is a bit strange. It has an area of
> > 16x4 TI 64K-bit chips (i.e 64x64k/8 = .5MB) and another
> > area of 10x4 TI 64K-bit chips (i.e. .3MB). No matter
> > what I do, I can't do the math to get this board to
> > fit into a 256/512/1MB size. I ASSUME it's a .5MB
> > board, but what about the extra chips?
>
> FastECC or parity, most likely... usually two or three bits per
> word... 256K x 18.
Thought about that too but the math doesn't work. 40+64 chips = 104
chips * 65536 bits per chip = 6815744 total bits.
6815744 doesn't divide cleanly by any of 9, 18, 19, 36, or 38
greg
Gregory Travis
Cornerstone Information Systems ATS
greg(a)ciswired.com
812 330 4361 ext. 18
On Mar 6, 11:46, robin.birch(a)postoffice.co.uk wrote:
>
>
> Dear All,
> I am after some reels of 0.5 inch tape and some spare write protect rings
in the
> UK. Can anyone help?
I may have one or two spare reels, and I certainly have quite a few spare
write rings. How many are you looking for? Does it matter if they're in
Wright-line seals, canisters, or autoload collars? Contact me off-list to
give me your address.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Received: (from major@localhost)
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id MAA21660
for pups-liszt; Wed, 7 Mar 2001 12:11:45 +1100 (EST)
(envelope-from owner-pups(a)minnie.cs.adfa.edu.au)
>From "Gregory R. Travis" <greg(a)ciswired.com> Wed Mar 7 11:07:00 2001
Received: from goby.ciswired.com (IDENT:root@goby.ciswired.com [206.97.67.65])
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id MAA21656
for <pups(a)minnie.cs.adfa.edu.au>; Wed, 7 Mar 2001 12:11:41 +1100 (EST)
(envelope-from greg(a)ciswired.com)
Received: from weasel.ciswired.com (root(a)weasel.ciswired.com [206.97.67.73])
by goby.ciswired.com (8.8.7/8.8.7) with ESMTP id TAA17670
for <pups(a)minnie.cs.adfa.edu.au>; Tue, 6 Mar 2001 19:58:44 -0500
Received: from localhost (greg@localhost)
by weasel.ciswired.com (8.9.3/8.9.3) with ESMTP id UAA18990
for <pups(a)minnie.cs.adfa.edu.au>; Tue, 6 Mar 2001 20:07:00 -0500
X-Authentication-Warning: weasel.ciswired.com: greg owned process doing -bs
Date: Tue, 6 Mar 2001 20:07:00 -0500 (EST)
From: "Gregory R. Travis" <greg(a)ciswired.com>
To: pups(a)minnie.cs.adfa.edu.au
Subject: [pups] Spares, et. al for 11/44 system
Message-ID: <Pine.LNX.4.10.10103061953490.18931-100000(a)weasel.ciswired.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-pups(a)minnie.cs.adfa.edu.au
Precedence: bulk
MANY thanks to all who responded to my questions regarding the PDP-11
equipment I recently acquired. I believe that I am well on my way to
being able to build a fairly substantial operating 11/44 museum piece.
I was able to open up the three RA81s and inspect them. Luckily their
heads had all been locked in place. Unfortunately, the belt release on
all were still set in "tension." Hopefully this will be a minor
issue.
I powered up the RA81s, all power up and start spinning the platters. I
have not allowed any of them to rotate fast enough to load the heads though -
I want to do a good cleaning first and get them situated in their
cabinets.
The three RL02s also all accept power and come on. However, they
all illuminate their fault light when power is applied. I cannot
remember if RL02s will do this when not connected to their
controller - anyone?
Finally, I have two 1MB Standard Memories memory boards, a 256K
Standard Memories board, 2 DEC 256K memory boards, 1 DEC 1MB
memory board, and 1 512K National Semiconductor memory board (see below).
All these are 11/44 memories.
Does anyone have CSR/etc. DIP switch settings for the Standard Memories
and/or Nat. Semi boards? I can't find anything on the 'net and I
have no other documentation.
Thanks!
greg
p.s. The Nat. Semi board is a bit strange. It has an area of
16x4 TI 64K-bit chips (i.e 64x64k/8 = .5MB) and another
area of 10x4 TI 64K-bit chips (i.e. .3MB). No matter
what I do, I can't do the math to get this board to
fit into a 256/512/1MB size. I ASSUME it's a .5MB
board, but what about the extra chips?
Gregory Travis
Cornerstone Information Systems ATS
greg(a)ciswired.com
812 330 4361 ext. 18
Received: (from major@localhost)
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id MAA21918
for pups-liszt; Wed, 7 Mar 2001 12:58:04 +1100 (EST)
(envelope-from owner-pups(a)minnie.cs.adfa.edu.au)
>From Warren Toomey <wkt(a)henry.cs.adfa.edu.au> Wed Mar 7 11:53:21 2001
Received: from henry.cs.adfa.edu.au (henry.cs.adfa.edu.au [131.236.21.158])
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id MAA21914
for <pups(a)minnie.cs.adfa.edu.au>; Wed, 7 Mar 2001 12:58:01 +1100 (EST)
(envelope-from wkt(a)henry.cs.adfa.edu.au)
Received: (from wkt@localhost)
by henry.cs.adfa.edu.au (8.11.2/8.9.3) id f271rL837045
for pups(a)minnie.cs.adfa.edu.au; Wed, 7 Mar 2001 12:53:21 +1100 (EST)
(envelope-from wkt)
From: Warren Toomey <wkt(a)henry.cs.adfa.edu.au>
Message-Id: <200103070153.f271rL837045(a)henry.cs.adfa.edu.au>
Subject: [pups] Fred's Ultrix-11 now in the UNIX Archive
To: PDP-11 Unix Preservation Society <pups(a)minnie.cs.adfa.edu.au>
Date: Wed, 7 Mar 2001 12:53:21 +1100 (EST)
Reply-To: wkt(a)cs.adfa.edu.au
X-Mailer: ELM [version 2.4ME+ PL68 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-pups(a)minnie.cs.adfa.edu.au
Precedence: bulk
In article <7263E31101C6D41196490008C7B2BFC30A8A9F(a)mwnt4.microwalt.nl>,
"Fred N. van Kempen" <Fred.van.Kempen(a)MicroWalt.NL> writes:
> Here is a quick snippet I just wrote up while loading my distribution on
> a test system. This file will be cleaned up,
> enriched and so on and included in the next release.
> Fred
The UNIX Archive now has Fred's distributions and his setup.txt in
the PDP-11/Distributions/dec/Fred-Ultrix3 directory:
total 17328
-rw-r--r-- 1 wkt pupsarc 892 Mar 7 01:30 README.ult11-3.0
-rw-r--r-- 1 wkt pupsarc 1663 Mar 6 12:36 README.ult11-3.1
-rw-r--r-- 1 wkt pupsarc 25497 Mar 7 12:53 setup-3.1.txt
-rw-r--r-- 1 wkt pupsarc 6680997 Mar 7 06:33 ult11-3.0-kit.tar.gz
-rw-r--r-- 1 wkt pupsarc 10988112 Mar 7 06:52 ult11-3.1-kit.tar.gz
http://minnie.cs.adfa.edu.au/TUHS/archive_access.html
Warren
Received: (from major@localhost)
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id TAA23916
for pups-liszt; Wed, 7 Mar 2001 19:59:37 +1100 (EST)
(envelope-from owner-pups(a)minnie.cs.adfa.edu.au)
>From Johnny Billquist <bqt(a)update.uu.se> Wed Mar 7 18:54:48 2001
Received: from Tempo.Update.UU.SE (IDENT:0@Tempo.Update.UU.SE [130.238.19.17])
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id TAA23912
for <pups(a)minnie.cs.adfa.edu.au>; Wed, 7 Mar 2001 19:59:31 +1100 (EST)
(envelope-from bqt(a)update.uu.se)
Received: from localhost (bqt@localhost)
by Tempo.Update.UU.SE (8.11.2/8.11.2/Update-Iltempogigante) with ESMTP id f278smE17031;
Wed, 7 Mar 2001 09:54:48 +0100
Date: Wed, 7 Mar 2001 09:54:48 +0100 (CET)
From: Johnny Billquist <bqt(a)update.uu.se>
To: "Gregory R. Travis" <greg(a)ciswired.com>
cc: pups(a)minnie.cs.adfa.edu.au
Subject: Re: [pups] Spares, et. al for 11/44 system
In-Reply-To: <Pine.LNX.4.10.10103061953490.18931-100000(a)weasel.ciswired.com>
Message-ID: <Pine.LNX.4.21.0103070953570.28370-100000(a)Tempo.Update.UU.SE>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-pups(a)minnie.cs.adfa.edu.au
Precedence: bulk
On Tue, 6 Mar 2001, Gregory R. Travis wrote:
> The three RL02s also all accept power and come on. However, they
> all illuminate their fault light when power is applied. I cannot
> remember if RL02s will do this when not connected to their
> controller - anyone?
Yes, they will turn on the fault light if not connected to a controller.
> p.s. The Nat. Semi board is a bit strange. It has an area of
> 16x4 TI 64K-bit chips (i.e 64x64k/8 = .5MB) and another
> area of 10x4 TI 64K-bit chips (i.e. .3MB). No matter
> what I do, I can't do the math to get this board to
> fit into a 256/512/1MB size. I ASSUME it's a .5MB
> board, but what about the extra chips?
ECC?
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
Received: (from major@localhost)
by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id UAA23981
for pups-liszt; Wed, 7 Mar 2001 20:07:47 +1100 (EST)
(envelope-from owner-pups(a)minnie.cs.adfa.edu.au)
