Re: Old core memory system.

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

Re: MS11 M8110/M8120 controller card differences

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.

Re: MS11 M8110/M8120 controller card differences

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

Looking for a VALinux console adapter, for model 1000

Console Adapter 102267-00 VA 1000 THanks for any hints or leads! i have one stashed and can't find it of course. bb

Re: Fairchild 9440/445 MicroFlame?

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

Re: RQDX3 formatter

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

Re: RQDX3 formatter

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 >

Re: Unknown Z80 CPU board and backplane ID anyone?

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

Re: RQDX3 formatter

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-geometr

Re: Got a kidney!

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

Re: Strange third party board in PDP-11/45

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

Re: VT100's

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

Re: SGI Indy power supply: identify this diode?

4BSOD-123F MM1Z2V2SemtechZener diode http://www.s-manuals.com/smd/4b On Sat, Mar 24, 2018 at 4:47 PM, Pete Turnbull via cctalk wrote: > After a recent power cut and a series of glitches as the power was > restored, one of my Indys suffered a PSU failure. It's a Sony

Re: Message Reply with quotation

It is usually a setting in your email client - include or not include original (more accurately, message one is replying to). Depends on your client. Most IMAP access sysems do it automagically unless you change the setting bb On Wed, Mar 21, 2018 at 8:09 AM, Pontus Pihlgren via cctalk

Re: RX01/RX8/RX11 user's manual for trade

where are you located? US or Oconus? bob On Sat, Mar 3, 2018 at 4:31 PM, Noel Chiappa via cctalk wrote: > Hi all, I have an extra "RX8/RX11 floopy disk system user's manual" I'd like > to trade off for something I'd find useful (anything PDP-11 which I don't > already

Re: FTGH: Unknown extender card

reminds me of S100 bus or some alternaive bus at that time, but memory is foggy. bob On Sat, Mar 3, 2018 at 5:48 PM, Noel Chiappa via cctalk wrote: > Hi, I'm not sure what kind of system this extender card: > >

Re: DEC 8640 Pinout

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

Re: PDP8/a Initial Power Up

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

Re: Rack-mount or tabletop version of DEC RX50 floppy drive?

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,

Re: off topic - capatob - saratov2 computer Russsian pdp8? HELP

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 -

Re: off topic - capatob - saratov2 computer Russsian pdp8

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

Re: off topic - capatob - saratov2 computer Russsian pdp8

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

Re: Original PDP-11/10 [was: Re: Origin of 'Straight 8' name]

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,

Re: Unknown paper tape format

https://books.google.com/books?id=Dhk9wHXfQMkC=PA389=PA389=EARS+experimental+automatic+radar+system+1970=bl=JTwGKD81Y4=a9Ikxih8Ef7E2TAX-V6xm8kuhhM=en=X=2ahUKEwiVz7288rbfAhWBkpAKHWfUCkkQ6AEwDnoECBMQAQ#v=onepage=EARS%20experimental%20automatic%20radar%20system%201970=false On Sun, Dec 23, 2018 at

Re: Origin of 'Straight 8' name

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

Re: Harris Mini's (was: WTD: 9 track open reel for PDP-11)

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

Re: PDP-11/60 manuals needed

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

Re: CR11 M8290/M8291 difference??

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

Re: PDP-11/45 RSTS/E boot problem

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

Re: ATEX PDP-11 For Sale in Houston

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

Re: Plane of core memory

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

Re: PDP 11/15

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

Re: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?

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

Re: DEC Purchase Specifications, particularly 23-000A9-01

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

Re: DEC VT20 boot device

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

Re: DEC Purchase Specifications, particularly 23-000A9-01

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

Re: Need DM11 documentation

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

Re: Seeking information on the CSTS Timesharing service

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

Re: RSTS emulation in a browser

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

Re: looking for a program - last gasp questions

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

Looking for info - Computer Extension systems WE-VM8E8 board

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

Re: Mystery 1970 core board

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

Re: Mystery 1970 core board

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

Re: Panda TOPS20 networking trouble

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

Re: IBM BSC CRC?

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

Re: Sorry

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 > > h

Re: Unidentified peripheral in Tektronix PDP-11/20 system

Link to paragraph or two in a book citing the 3260 as a test system for military requirements related to commercial devices.

Re: [Simh] Various

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

Re: Fwd: Crypto AG

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

Re:

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

Re: Making use of Panda dist TOPS20

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

Re: Scientific Data Systems Cards

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

Re: Mystery 1970 core board

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

Looking for a document regarding PDP8

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

Re: Looking for a document regarding PDP8

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

Re: Looking for a document regarding PDP8

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

Re: LINC-8

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

Re: Charles Lasner [Was: Re: LINC-8]

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 >

Re: Looking for a document regarding PDP8

: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 to g

Re: Charles Lasner [Was: Re: LINC-8]

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

Re: LINC-8

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

Re: Wanting some help with a PDP-8/a

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

Re: Remote job submission from PDP-11

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

Re: Remote job submission from PDP-11

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

Re: Looking for an IDE simulator

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

Re: Anyone know what an AM000076 (Dip 18) is?

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

Re: OpenVMS Community License

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

Gotek Floppy Drive Emulators in general and as RX50/RX33 replacements

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

Re: PDP8 KV graphics PCB design

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

Re: PDP-8/A transformer hum

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

Re: Someone's confused

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

DS10 Alpha question = Sata Drive card?

Can anyone recommend a SATA card that will work with a DS10 Alpha, and which OS supports that card? thanks bob

Re: DS10 Alpha question = Sata Drive card?

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

Re: DS10 Alpha question = Sata Drive card?

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: >

Re: Gotek Floppy Drive Emulators in general and as RX50/RX33 replacements

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

Re: Interested in Microport 286 System V?

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

Re: found it: first speech synthesizer (at least, for S-100 systems)

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

Re: Microvax 3100 VMS 7.3 password reset

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

Re: Systems Engineering Laboratories - SEL History

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

Re: DDCMP sync?

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

Re: DDCMP sync?

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

DECNet for Pro 300 series boxes

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

Re: DECNet for Pro 300 series boxes

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

Re: cctalk Digest, Vol 80, Issue 17

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 >

Re: Flip-Chip selloff

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

Re: Flip-Chip selloff

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

Re: DECtape ancestry

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

Re: TC08 DECtape bootloader question

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

Re: Any interest in a Floating Point Systems AP-120 array processor?

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

Re: PDP-8/I vs 8/E EAE

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

Re: RSTS processor identification

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

Re: Deciphering an odd floppy disk format.

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

Re: Systems Concepts SC-4 computer

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,

Toad1 XKL version of TOPS20 v7

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

SIMH KL10 usage guide? Hints? and

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

Maybe - re- DMX11

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

Re: KMC11/DMC11 folllow up

: > > 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 that b

Re: cctalk Digest, Vol 89, Issue 3

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'

Re: cctalk Digest, Vol 88, Issue 29

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

Re: cctalk Digest, Vol 88, Issue 30

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

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