Don White designed the FPP8/A. From my recollection, the unit that
was sold with 8/A was the second iteration of an Omnibus FPP8. I waa
off in LCG working on Jupiter so I never got to see the original but I
recall that the redesign to use the cycle stealing version that went
to market was because
On Thu, Feb 3, 2022 at 1:08 PM wrote:
>
> Send cctalk mailing list submissions to
> cctalk@classiccmp.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://www.classiccmp.org/mailman/listinfo/cctalk
> or, via email, send a message with subject or body 'help' to
gt;
> On Feb 1, 2022, at 8:20 AM, Bob Smith via cctalk
> wrote:
> >
> > KMC11 - Paul K cited the docs. It was a bit different from DMC CPU board
> > in both cycle time and in the use of ram versus prom.
> > Both boards/products used the 4bit Alu but I don't call t
KMC11 - Paul K cited the docs. It was a bit different from DMC CPU board
in both cycle time and in the use of ram versus prom.
Both boards/products used the 4bit Alu but I don't call that bit
slice, as the 2901 is more of a bit slice.
KMC and DMC are Harvard architecture based devices, as is the 11
IIRC, John Mac was the designer for the DHQ/DHV. If my memory is
correct, after DH was done, John had the idea of a mix and match
synchronous/Async mux and came up with those designs. I dont remember
who was on his team. COMMS 11 group had led (farmed out) the designs
of the Sync version of a UART
Back in 75-77 time frame, the KMC11 was packaged with DD11 backplane,
a controller interface board or an SLU to implement version 2 of the
DoD AUTODIN II. Philco Ford element then called Aeronuetronic Ford out
ot Cali was the prime. DEC won the hardware portion bidding PDP11
systems using the KMC11
I left in 79, I designed the AUtodin II mode 1A//Mode VI line usints.
Those were synchronous comms interfaces for Bisync.ADCCP/ etc
connections while CSS did the Mode 1 I think it was Asynch interface
line unit.
I suspect DMX is the commercial version of that Autodin II Asynch
design, using the KM
I am hoping someone here knows Richard Cornwell, driving force behind
KL10B SimH and associated forks.
Not sure how to raise the issue of simulated RP07 drives size not
matching RPO7 and looking like RPO6.
Also trying to figure out how to set switches as in other KA/KL sims.
I can't seem to find a
I have noted that the Computer History Museum has a number of
donations from XKL re Toad1.
Rich Alderson might be the resident expert for this set of questions.
two questions are thus prompted, and a third teased.
1. Does that XKL version run on the KLH10 emulator?
2. Is the tape CHM has been arch
THanks Lee!! Much appreciated - confirmed my decaying memory, and
pointed out the the almost mythical DECNA!!
bb
On Wed, May 19, 2021 at 1:38 PM wrote:
>
> Send cctalk mailing list submissions to
> cctalk@classiccmp.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
>
Thanks for the info. and John!!
bb
On Mon, May 17, 2021 at 4:13 PM Paul Koning wrote:
>
>
>
> > On May 17, 2021, at 2:43 PM, Bob Smith via cctalk
> > wrote:
> >
> > My recollection of Decnet for Pro boxes is that the available SW was
> > for an end nod
My recollection of Decnet for Pro boxes is that the available SW was
for an end node and not a routing or other capability for the
380/350/325 boxes.
While that memory might be incorrect, are there any DecNet packages
for the Pro family available anywhere?
a few hours of searching did not turn up a
thanks, came through to ENDB here! great explanation!
bb
On Sun, Mar 21, 2021 at 9:35 AM Rick Murphy via cctalk
wrote:
>
> On 3/20/2021 8:51 PM, Kyle Owen via cctalk wrote:
> > On Sat, Mar 20, 2021 at 7:19 PM Kyle Owen wrote:
> >
> >> However, it appears as though word count will be hit by the l
via cctalk wrote:
> >> On 3/11/21 6:12 PM, Bob Smith via cctalk wrote:
> >>> My recollection was the Linc was inspired by the Whirlwind. Whirlwind
> >>> predates it by a few years.
> >>
> >> Tom Stockebrand is the connecting link between all of th
My recollection was the Linc was inspired by the Whirlwind. Whirlwind
predates it by a few years.
AND of course the Linc inspired the PDP5 and PDP8. Of course some one
correct me if this is wrong, but my sources were DEC when I worked
there 1969-1980, stories with Don White and others, as well as m
very nice! thans!! better than reading all the manuals and trying to
figure out the code!!
Stay well Paul!!
bob smith
On Fri, Mar 5, 2021 at 1:38 PM Paul Koning via cctalk
wrote:
>
> I was just asked some questions about how RSTS identifies your processor
> type. Since that topic might be of br
Don't know if you have seen this - might be helpful
http://www.quadibloc.com/comp/cp0306.htm
On Tue, Mar 2, 2021 at 3:09 PM Kyle Owen via cctalk
wrote:
>
> Has anyone noticed a difference in DVI overflow behavior on the PDP-8/I EAE
> versus the PDP-8/E EAE? The 8/E EAE claims to be 8/I compatib
I recall the FPS AP120B as an add on for PDP11 boxes, 11/45, 11/70 for
some serious signal processing apps.
bb
On Sun, Feb 28, 2021 at 1:48 AM Mark Linimon via cctalk
wrote:
>
> On Sat, Feb 27, 2021 at 08:15:50PM -0800, Josh Dersch via cctalk wrote:
> > I picked this up a number of years ago for
I think by 75 we at DEC hwe had at least two pin compatible source for
UART, While CHester G Bell gets credit for the design, my memory is
that Vince Bastiani did the design. That set the stage for having the
Synchronus /Isochronous chips built too. Signetics was contracted to
do the 2652 based on
YEs, SEL purchased by Gould, was Systems Engineering Labs - Their
early systems were interesting in the way the I/O bandwidth was much
highter than the compute capability. Perfect machine for data
collection, and they were sold to many labs. THis continued with their
first 32 bit machines. Later,
Oh, and 2 8/a boxes, but i did move out 15 Vaxes of various times and
an 8e that someone refuse to admit I gave them.
bb
On Tue, Feb 2, 2021 at 4:13 PM Bob Smith wrote:
>
> I am down to 2 vaxes and an 11, along with 10 Alphas, a pro380 and two
> DECMante II boxes.
> bb
>
> On Tue, Feb 2, 2021 at
I am down to 2 vaxes and an 11, along with 10 Alphas, a pro380 and two
DECMante II boxes.
bb
On Tue, Feb 2, 2021 at 1:48 PM Chris Zach via cctalk
wrote:
>
> Might be a good time: I remember my dad saying I should encase each one
> in lucite plastic and sell them as paperweights. That was 30 years
Actually, DMC and DQ11 both had V35 options and both would hit 1.5
(1.3 actual due to protocol overhead. The DP8/e supported v.35 also,
but I don't recall how fast I could get that to go. I had bell 301 and
303 modems in the lab in the mill, running back to back. THere are
some arcane bits in the
Usually, we referred to the synchronous chip as a USynrt chip, a play on UART,
DMC can run 1.544 Mb/s, or full T1. DUP or DU11 were good to upto 56K.
Bisync, ADCCP, HDLC, DDCMP, BDLC were all options back in 77 but...
Yes, they are slow. I had a hard time trying to explain th the
Signetics design
We had a Votrax in our lab at DEC around that time, we set it up with
a photo detector to trigger a phrase when someone walked by. IIRC
programing the sounds used a phoneme library... that was fun figuring
out before we finally got the manual!!
bb
On Wed, Dec 16, 2020 at 11:14 AM Chuck Guzis via c
I have a copy of the process in my stash it is findable on the web.
I used to wear this funny hat, and used the methoo a few times - even
on my cluster at home.
It does work.
bb
On Thu, Nov 12, 2020 at 8:13 AM Richard Curtis via cctalk
wrote:
>
> > I picked up a microvax 3100 this past weeke
My memories of SEL beginnings are dusty. and rusty. I recall a bunch
of their systems being used in science related efforts, beecause of
the high IO capability. At the time, for NASA and others, it was the
ideal platform for data collection. Not a bad compute capability -
many other systems in tha
Hey Dave,
I think the two guys working the tools originally were Bob Rosenbaum
and Harvey Schlesinger.
You are pretty much correct on the diffs between KMC and DMC. KMC had
180NS instruction time, and larger ram than the DMC iirc on that
point.
I worked on both with Remi Lissee.
I designed the DMC
Sig 2652 is an alternative to the 5025. 5025 is based on the DP11 MSI
design by Frank Zereski at dec, the 26t2 is based on my design for the
DMC/KMC line units that could run DDCM{< BiSync-ADDCP-BDLC
On Wed, Oct 7, 2020 at 5:04 PM Ethan Dicks via cctalk
wrote:
>
> On Wed, Oct 7, 2020 at 4:49 PM A
Technology wise, there is an inherent limitation on the number or
writes with the SSD design.
While it is not as simple to calculate as a mechanical system, it does
have a limitation.
I don't know the exact number with the current technology, earlier
products had write life times in the tens and hu
I am not sure I understand your "as it turns out there was only one" Bill.
Am I correct in assuming you are talking about DEC owned, and meaning
that Bob Supnik one?
John Wilson's Ersatz 11, aka E11, was and is a great functioning
emulator, but not owned by DEC.
Not arguing, just making sure I un
Bela Lubkin
We have a winner! Al Kossow does want it -- he didn't say whether for
Bitsavers or Computer History Museum...
2 · Like · React · Reply · More · Yesterday at 4:53 AM
Warner Losh replied · 3 replies
On Mon, Jul 20, 2020 at 4:11 AM Robert Lipe via cctalk
wrote:
>
> Hi, Warren. We've spo
THanks all of you! I did not see any individual messages, just this
whole string at once.
I picked up the OLED hack bits, and will install thena and then go
with FlashFloppy firmware, and the utilities I have found
I have a virtual PC (98, XP, 7) and one windows 8 machine i picked up
used specifica
Two questions,
1. If anyone is using these devices, which firmware/software do you
use in the device and why did you choose it?
2/ Is anyone specifically using one as a replacement or adjunct or and
RX50 et al on a Pro, pdp11, uVax, DecMate, or Pro box, and same
question set as 1?
Yes, i picked
KV8i, Us Navy was a big customer up til about 1971.
I could be wrong, but I think Murray Rueben was the lead designer, and
I think Dick Sogge had soemthing to do with it.
We were going to do on on the /e, an omnibus design, but that was
killed by Marketing in mid 70/
bb
On Tue, Jun 23, 2020 at 1:4
Excellent data thank you Jason!
bb
On Thu, Jun 11, 2020 at 2:50 PM Jason Howe via cctalk
wrote:
>
>
> On 6/11/20 11:32 AM, Bob Smith via cctalk wrote:
> > Correct. One of he BSDs or Linux
> > bb
> >
> > On Thu, Jun 11, 2020 at 2:24 PM Zane Healy wrote:
> &g
Correct. One of he BSDs or Linux
bb
On Thu, Jun 11, 2020 at 2:24 PM Zane Healy wrote:
>
>
>
> > On Jun 11, 2020, at 11:19 AM, Bob Smith via cctalk
> > wrote:
> >
> > Can anyone recommend a SATA card that will work with a DS10 Alpha, and
> > which OS sup
Can anyone recommend a SATA card that will work with a DS10 Alpha, and
which OS supports that card?
thanks
bob
Is there a recommended alternative or replacement power supply for the 8/A?
thanks
On Tue, Jun 9, 2020 at 4:20 AM Marco Rauhut via cctalk
wrote:
>
> Hi Josh,
>
> i have restored last year a PDP-8/a to and had the same experience like you
> with the Powersuppy. I felt also wiered about the bang i
I believe your recollection is correct. I was working on a project and
looking at replacing a bunch of 11 boxes, and we had an NDA discussion
of what would be MVII. WE selected those to replace the aging 11
boxes, the configuration gave us more compute nodes, less power
consumption, and much less p
27S29
Abstract: AM27S28 Am27S28/27S29
Text: Am27S28/ 27S29 4,096-Bit (5 1 2 x 8 ) Bipolar PROM Am27S28/
27S29 DISTINCTIVE CHARACTERISTICS · · · High Speed Highly reliable,
ultra-fast programming Platinum-Silicide fuses High programming yield
· · · Low-current PNP inputs High-current open-collector
The first thing that comes to mind on the 8/a is whether or not the
front panel (key press is what I assume you are using, cables are
plugged into the board the proper way.
On Mon, May 11, 2020 at 5:10 PM Bryan Longram via cctalk
wrote:
>
> I acquired a non-functional PDP-8/A several months ago a
Rick Merrill is doing well last time I exchanged comments with him.
We wired in 8 engineering, DecComm11, and LCG together over the years.
I will have to rattle his cage just for fun now.
bb
On Tue, Apr 28, 2020 at 12:29 PM Lyle Bickley via cctalk
wrote:
>
> On Mon, 27 Apr 2020 10:58:59 -0400
> C
I can say over the last 30 years or so, I enjoyed a number of
exchanges with CJL.
I did enjoy the repartee - iirc most of it was just between us, but
some was in some 8 related channel.
I found him knowledgeable, opinionated, but most of the time just
plain fun to argue with.
Over the last 6 or 7 y
Charles Lasner.
On Mon, Apr 27, 2020 at 8:47 AM Noel Chiappa via cctalk
wrote:
>
> > From: Bob Smith
>
> > saw a comment that this belonged to CJL.
>
> Chris Lindblad? Sorry, I'm drawing a blank on someone with those initials who
> is connected with the LINC.
>
>
> > From: Jon Elson
saw a comment that this belonged to CJL.
bb
On Sun, Apr 26, 2020 at 4:57 PM William Donzelli via cctalk
wrote:
>
> > Wow:
> >
> > https://www.ebay.com/itm/353062352448
> >
> > I've read manuals for these, but I've never even seen a picture of one
> > before.
>
> "needs work"
>
> That would be
:30 PM Al Kossow via cctalk
> wrote:
> >
> > On 4/16/20 10:12 AM, Bob Smith via cctalk wrote:
> > > I am bout to pull out my BigMac that might
> > > have the data in it.
> >
> > As in the Apple 68020 Rich Page computer?
> > If so, I'd REALLY like
thanks!
On Fri, Apr 17, 2020 at 5:48 PM Len Shustek via cctalk
wrote:
>
> At 10:00 AM 4/17/2020, Bob Smith wrote:
> >...I believe sometime in the late 70s, maybe as late as 1980, a prof
> >associated with UMass wrote a paper describing an extension of the
> >PDP8 called 8/X or 8X.
> >...I believ
drives to search.
Thanks Al! Good Laugh!
bb
On Thu, Apr 16, 2020 at 3:30 PM Al Kossow via cctalk
wrote:
>
> On 4/16/20 10:12 AM, Bob Smith via cctalk wrote:
> > I am bout to pull out my BigMac that might
> > have the data in it.
>
> As in the Apple 68020 Rich Page compu
I have posed this question to the 8lovers list, and folks seemed to
misunderstand. So let me try here.
I believe sometime in the late 70s, maybe as late as 1980, a prof
associated with UMass wrote a paper describing an extension of the
PDP8 called 8/X or 8X.
THIS IS NOT the Pre Nova/DG machine but
Don't forget Pluribus used the same boards. I think most of those were
finally scrapped in the late 90s. They had been repurposed after I
think it was Citibank dumped a lot of them.
bb
On Fri, Mar 6, 2020 at 9:28 AM Al Kossow via cctalk
wrote:
>
> On 3/6/20 4:42 AM, Jules Richardson via cctalk wr
The Unibus was patented. Don't lmpw jpw ,icj pf the WCS/,ocrpcpdomg
SIE jad avao;ab;e/
I do not have the ISA in my head or handy, been more than 30 years
since I touched a Pluribus, BBN version of the SUE.
//bob
On Wed, Mar 4, 2020 at 11:27 AM Mark Linimon wrote:
>
> On Wed, Mar 04, 2020 at 11:25
LEC16 was a copy of the PDP11. Lockheed sold it to BBN. BBN relabeled
it Pluribus.
I was part of the DEC engineering team looking at purchasing the LEC,
as one of the features was the ability to be an Arpanet IMP.
I was quite familiar with t the Unibus, and noticed the print set was
very similar to
what is the host environment? Linux? or something else?
You have to set up some hoste networking, sometimes involving some
installs of virtual networking bits.
bb
On Tue, Mar 3, 2020 at 12:25 AM David Griffith via cctalk
wrote:
>
>
> I'm having loads of trouble getting networking going with the P
sorry if you have already thought of this and I might be wrong, is the
278 cable the same as the vt78 RX cable?
I recall the external drive cable was a 37 pin male and a 25 pin male
but not all the pins were used in either one.
IIRC it was the same connector as used for the DP78 and LPT (DP78 was
u
IIRC, in the late 70s there was a hand held PDP8 (Intersil 6100 based)
variant ot the crypto AG box. PDP8 had been used (some decus
contributions) for linguistic and cryptologic applications. The hand
held looked a bit like a calculator, but I don't recall it having a
capability to connect to any
I recall some of the team in Small systems/PDP8 lab playing with audio
cassette drives as storage for low cost PDP8, before the VT78. A
couple of others of us, were playing with real cheap video modulators.
As an aside, that got me playing with ideas for a radar jammer
something that would work
David,
you don't say which emulator you are using (specifically) for TOPS20
Panda does run very well on the KLH10 from Ken H.
The set up for KLH10 emulator has details on how to set up the NI 20
address, mask etc, there is additional info on how to set up tun/tap
with the virtual interface. There
I have 3 of these omnibus boards, all fully populated with 8K 12 bit
words of 2102 static ram.
What I don't have is the documentation that describes the way the
jumpers need to be set up for each 8K field.
The set up seems to involves what looks like a 3 parallel 8 pin
sockets that look like one an
this group - my mailer must
> have screwed up!
>
> 73 de Nigel ve3id
>
>
> On 26/01/2020 18:12, Bob Smith via cctalk wrote:
> > I ma rusty on this, been almost 50 years since I worked on the DP8EP
> > aka the KG83. then the KG11, and the Autodin 2 CRC32 designs in
> &
I ma rusty on this, been almost 50 years since I worked on the DP8EP
aka the KG83. then the KG11, and the Autodin 2 CRC32 designs in
hardware.
I don't recall whether bisync, aka bsc used LRC8, 12, 16, or crc16 as
the error detection algorithm.
I don't think it used VRC. I did find a refresher that
Link to paragraph or two in a book citing the 3260 as a test system
for military requirements related to commercial devices.
https://books.google.com/books?id=-68mFnWum5kC&pg=PA1051&lpg=PA1051&dq=Tektronix+S-3260+test+system&source=bl&ots=sECJVSCho6&sig=ACfU3U3FsOjOoD-69ct0Vrz9E8ttRz5Jiw&hl=en&
SDS, started in 61 and in 69 bought by Xerox Data Systems, used both
discrete RTL and DTL in their 24 bit systems. Adopted integrated
circuits early on.
I interviewed with them just before the Xerox acquisition,and DEC. I
opted for DEC as I lived down the street.
910, 920, and then 930 models wer
Bill,
I am assuming you have done all the usual after a physical move of the system -
reseated all the boards and whatever we called those green blocks on
top of the board pairs, and cables - both ends.
If not, that might be the hint the system is giving you.
That is about all I can think of somet
http://www.fundinguniverse.com/company-histories/computer-sciences-corporation-history/
Has some bits of data from my memory.
I did some work on the Mailgram system, putting PDP8/e boxes as comms
front ends to 1108s.
On Mon, Dec 16, 2019 at 8:42 PM jim stephens via cctalk
wrote:
>
>
>
> Does any
To answer your question, yes, yuo can down a compacted file or another
and it will be able to run locally (done that but not tried yet)
It does time out (but if you let it sit, suddenly it pops up, it seems
to be at some sort of dynamic IP address that takes a bit to pop up.
hope this hellps.
bb
O
are you thinking of conquest?
https://github.com/jtrulson/conquest
conquest
Conquest is a top-down, real time space warfare game. It was
originally written in RATFOR for the VAX/VMS system in 1983 by Jef
Poskanzer and Craig Leres.
I spent incredible amounts of time playing this game with my frie
I believe that DM11 was designed by Vince Bastiani, (SP) after the
DM11 he designed the UART - that is another story - with one or more
vendors.
The backplane - as I recall - was dedicated to the DM11 Comms interface.
here is the board list
M7240DM11 U DM11-A control
M7241DM11 U DM11-
The VT20 design team was, iirc, John Kirk for the video, and me for
the Unibus interface in the first version. The one with the slick
one shown here,
http://bitsavers.org/pdf/dec/terminal/vt20/vt20_2.jpg
The /05 based package was after my time, I don't remember much about
how it was deployed.
The b
https://datasheetspdf.com/pdf-file/541962/AMD/AM27S13/1
Listed as a 50NS part
27S32 is listed at 70NS part.
On Wed, Jul 17, 2019 at 2:59 PM Eric Smith via cctalk
wrote:
>
> On Wed, Jul 17, 2019 at 9:43 AM Mark J. Blair via cctalk <
> cctalk@classiccmp.org> wrote:
>
> > > On Jul 17, 2019, at 1:20
Don't know if you are aware of this data, might just give you some hints.
http://www.ak6dn.com/PDP-11/M9312/
On Tue, Jul 16, 2019 at 4:19 PM Bill Degnan via cctalk
wrote:
>
> On Tue, Jul 16, 2019 at 4:10 PM Mark J. Blair via cctalk <
> cctalk@classiccmp.org> wrote:
>
> > I've been studying scanne
My recollection, Unix on the 11 started with the 20 but because of the
limited capabilties, it really was done on the /45.
The three rings or 3 execution levels were not supported on the
original machine.
bb
On Wed, Jun 19, 2019 at 5:20 PM ED SHARPE via cctalk
wrote:
>
> unix developed on 11/20 w
IIRC, there are two models called //15.
The original, 10.5 high, an 11/20 with no power fail. We dold that to
Aeroflot with about 10 racks of periphs.
although I have never seen one, there have been refs to another more
modern unit, based on LSI=11 or later chip set,
so I wonder if it is one of tho
Not any dec core memory stack board I know of, - fingers are not gold
plated. - it is 8 bit.
I could speculate it might be from a low cost system from the late 70s
or early 80s but
in that time, everything core was in the many thousands of dollars.
On Thu, Apr 18, 2019 at 12:30 PM Chuck Guzis via
11/34 originally had a two board MSI chip set CPU, in two versions. 34 and 34a.
J11 versions, sort of an 11/84 variant in a 34 chassis seem to have popped up.
is it like this one?
On Tue, Apr 16, 2019 at 12:56 AM Thomas Raguso via cctalk
wrote:
>
> I am selling an Atex PDP-11/34. The computer ha
my recollection of the JO KD11-K is dusty. It was under development at
the same time my group was working on the DMC/KMC11 products.
The similarity of the /60 and the DMC/KMC was the fact that they were
both based on Harvard architecture implementations.
.
A Harvard arch implementation of the PDP11
I keep wondering about the psu. I just recall the /45 in my lab was
always a little flakey.
We suspected everything in the machine, and it was ak to chasing a sea
bat in the dark.
Our environment in ML 1-2 was not the best, the floor actually moved,
we were right at the mid building elevator.
We fi
IIRC, John McNamara designed the CR8/e and the two CR11 boards. My
recollection is based on the fact I picked up the last bit of CR8e
Initially, I think there were thought to be some differences in
"Punch" cards and timing, real holes and just the black marks.
That initial issue seemed to indicate
With the advent of wide spread introduction of 16 bit machines the
definition of a byte as an 8 bit unit was accepted because ASCII
supported character sets for multiple languages, before the 8bit
standard there were 6 bit, 7 bit variations of he character sets.
Gee, what were teletypes, like the m
Sorry, thanks for playing but
Actually half of a WORD is a BYTE, whatever the numerical length is.
Ready for this,half of a BYTE is a NIBBLE. In fact, in common usage,
word has become synonymous with 16 bits, much like byte has with 8
bits.
What's the difference between a word and byte? - Stack Ove
https://hapoc2015.sciencesconf.org/file/176702
gives a Little more history on Soviet copies of computers.
The timing of the production of the Capatob 2 seems to make it a
PDP8/L clone, not an M. What is called the 8 is really based on the 5,
used 6-bit bytes, 12 bit words, and was Octal based - me
I almost remembered, had to look it up to confirm 81, the 48bit system
they carried on when they bought the original company that had made
them and the Vulcan OS. Not a bad scientific and instrumentation
machine. What was the original company Datacraft or something?
bob
On Fri, Dec 28, 2018 at 3:4
https://books.google.com/books?id=Dhk9wHXfQMkC&pg=PA389&lpg=PA389&dq=EARS+experimental+automatic+radar+system+1970&source=bl&ots=JTwGKD81Y4&sig=a9Ikxih8Ef7E2TAX-V6xm8kuhhM&hl=en&sa=X&ved=2ahUKEwiVz7288rbfAhWBkpAKHWfUCkkQ6AEwDnoECBMQAQ#v=onepage&q=EARS%20experimental%20automatic%20radar%20system%201
when the multi rack PDP11/20 (on the switch panel) was being assembled
for delivery to Aeroflote, circa 1971 or 2 iirc, the unit did not have
a working power fail recovery capability. The machine was then
referred to as an 11/15. At that time, the PDP11 was considered a
controlled technolgy item,
Thank you Allison! I was trying to get my fingers to work and kept
having an attack of gasp how could someone not know?
Well said, hope you are doing GREAT!
bob smith, 8/e engineering, 8 engineering, DecComm11, LCG 2080
On Fri, Dec 21, 2018 at 12:58 PM allison via cctalk
wrote:
>
> On 12/21/2018
http://manx-docs.org/details.php/1,439
some docs online, that might help
Operators manual PDF
ftp://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp8/pdp8a/EK-8A001-OP-002_PDP-8A_Operators_Handbook_Sep76.pdf
and a concise bit that might give you some help too
http://www.vcfed.org/forum/archive/i
SOme history that might come in handy -
pbir...@gmail.com
March 8th, 2014, 11:37 PM
The DEC PDP-11 Unibus Handbook identifies three standard ICs for use
when connecting to Unibus lines:
Bus Receiver - 8640 Quad NOR
Bus Transceiver - 8641 Quad
Bus Driver - 8861 Quad NAND
It seems to be generally a
I don't recall for certain, what floppy models were done as externals
for the DecMate I or II, but I think there were both RX01 and RX50
boxes as described. I don't recall hard drives til the VT278 desktop
box.
bb
On Tue, Oct 2, 2018 at 8:32 PM Ethan Dicks via cctalk
wrote:
>
> On Tue, Oct 2, 2018
My recollections, having worked for Stockebra in the comm group when
he started the 50.
These are all recollections, from my time working at DEC, no looking
at history books, no interweb tube alta vista quesries.
50 was a quite brilliant limited capability terminal, that could
replace the OEM'd VT
lunch today. It
seems I finished it three years ago today!
Lou
On Fri, Aug 3, 2018 at 12:34 PM, Eric Smith wrote:
> On Fri, Aug 3, 2018 at 10:08 AM, Bob Smith via cctalk
> wrote:
>>
>>
>> http://www.vcfed.org/forum/showthread.php?38940-Patching-ZRQCH0-to-use-any-geometry-MF
https://groups.google.com/forum/#!topic/vmsnet.pdp-11/ZjO5I_keK_k
On Fri, Aug 3, 2018 at 12:08 PM, Bob Smith wrote:
> http://www.vcfed.org/forum/showthread.php?38940-Patching-ZRQCH0-to-use-any-geometry-MFM-hard-disk-on-RQDX3
>
>
> On Fri, Aug 3, 2018 at 10:22 AM, Christian Corti via cctalk
> wro
http://www.vcfed.org/forum/showthread.php?38940-Patching-ZRQCH0-to-use-any-geometry-MFM-hard-disk-on-RQDX3
On Fri, Aug 3, 2018 at 10:22 AM, Christian Corti via cctalk
wrote:
> Where do you patch the ZRQCH0 binary to use different geometries for non-DEC
> drives with a RQDX3?
> As it seems it sho
Varian made a bunch of specialized systems/Devices used in Lab environments.
On Mon, Jul 30, 2018 at 9:45 PM, Rob Doyle via cctalk
wrote:
> That logo is Varian and Associates.
>
> http://www.logobook.com/logo/varian-and-associates/
>
> Rob.
>
>
> On 7/30/2018 10:27 AM, Adrian Graham via cctalk w
any identification number sn front or back? can tell from just that shot.
On Sat, Jul 21, 2018 at 2:37 PM, Mattis Lind via cctalk
wrote:
> This board was sitting in slot 21 of the backplane in a 11/45
>
> https://i.imgur.com/ZYWZQCo.jpg
>
> What kind of board is this?
>
> It has 26 bipolar RAMS.
All the best for excellent recovery!
bb
On Sat, Jul 14, 2018 at 4:43 PM, Kurt K via cctalk
wrote:
> Great news! A fast and smooth recovery.
>
> Sent from my iPhone
>
>> On Jul 14, 2018, at 14:14, Daniel Seagraves via cctalk
>> wrote:
>>
>> Got the call yesterday. Transplant operation was a suc
Bob,
I checked my books, and don't have any of the Fairchild stuff left,
passed em on a couple of years ago. Online, I think I hit the same
ones you are talking about but including links just in case.
I assume you have looked at the 1983 manual, pages 6-51 on with the
notional system design and ti
Console Adapter
102267-00
VA 1000
THanks for any hints or leads!
i have one stashed and can't find it of course.
bb
11/35 vs 40, I think there was some attempt to discriminate between
the two, as the /35 with no added boxes was a great little machine
cost and performance wise, I recall the timing being different when
going through the prints for the two machines, got parts for 35 out of
surplux, checked the back
Had to look it up, 8110 for MOS memory, and 8120 for bipolar memory is
what field guyde list says.
I think the there was some change from special select parts and a move
to schottky 74S series around the time of the 45/50 days.
http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/har
SDS built a 24 bit system with Parity too, the CDC 924 was 24bit,
there were a few others and I believe but can not recall for sure, a
navy 24 bit maybe done by ERA.
bb
On Sat, May 5, 2018 at 2:32 PM, Chuck Guzis via cctalk
wrote:
> On 05/05/2018 10:23 AM, Pete Lancashire via cctalk wrote:
>> Co
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