Re: VAXmate PSU

Den sön 5 apr. 2020 kl 22:18 skrev Brent Hilpert via cctalk < cctalk@classiccmp.org>: > On 2020-Apr-05, at 6:05 AM, Rob Jarratt via cctalk wrote: > > I found time to follow Mattis’s suggestion today and I got some > interesting results. > > > > I powered the UC3842 with about 16V from a bench

Re: VAXmate PSU

ve been more explicit about where to introduce external supply. But as you say, lift R32 to isolate the switching controller and feed in the bench supply current at VCC. Check the data sheet for what is approriate voltage. Good luck! /Mattis > > > Thanks > > > > Rob > > &

Re: VAXmate PSU

Hello Rob, lördag 28 mars 2020 skrev Rob Jarratt via cctalk : > I have posted here a couple of times because I have a failed VAXmate PSU. I > have just posted a little bit more information here: > https://robs-old-computers.com/2020/03/28/further- > analysis-of-the-vaxmate-h7 > 270-psu-failure/

IBM chip cross reference list?

I am helping a guy with a dead IBM 3279 terminal The PSU does not seem to work. But as usual it is impossible to find any schematic online for IBM stuff. Just interconnection diagram and high level drawings. Anyone? Now the PSU circuit seems to be quite simple with just one IC in it. A chip

Re: Is this IBM keyboard compatible with the IBM 3279?

Den sön 8 mars 2020 kl 05:30 skrev : > On 2020-03-03 10:48, Mattis Lind via cctalk wrote: > > The connector is the correct one. It has four jumpers that could be > > used > > for setting one of the keyboard types using the KB ident lines. > > > > https://i.im

Re: Is this IBM keyboard compatible with the IBM 3279?

Den ons 4 mars 2020 kl 02:05 skrev Matt Burke via cctalk < cctalk@classiccmp.org>: > On 03/03/2020 16:48, Mattis Lind via cctalk wrote: > > The connector is the correct one. It has four jumpers that could be used > > for setting one of the keyboard types using the KB ident

Is this IBM keyboard compatible with the IBM 3279?

The connector is the correct one. It has four jumpers that could be used for setting one of the keyboard types using the KB ident lines. https://i.imgur.com/PhfvKaV.jpg https://i.imgur.com/VPT38cK.jpg https://i.imgur.com/nN1gtFu.jpg Which terminal was it used for originally? /Mattis

Re: IBM BSC CRC?

oghlan via cctalk < cctalk@classiccmp.org>: > Mattis Lind wrote: > > > > > Hello IBM BSC Experts! > > > > I am trying to figure out the CRC algorithm used by IBM BSC. I have > tried a > > lot of different settings in crcreveng but not getting a match. > &

Re: IBM BSC CRC?

; cctalk@classiccmp.org>: > Mattis Lind wrote: > > > > > > I have two actual messages from equipment employing IBM BSC: > > > > 32016CD90240404070032688 > > > > and > > > > 32016CD90240C84050030D28 > > > > > > > >

Re: IBM BSC CRC?

Den mån 27 jan. 2020 kl 02:07 skrev Chuck Guzis via cctalk < cctalk@classiccmp.org>: > On 1/26/20 3:12 PM, 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 > > hardware. > > I

IBM BSC CRC?

Hello IBM BSC Experts! I am trying to figure out the CRC algorithm used by IBM BSC. I have tried a lot of different settings in crcreveng but not getting a match. I am pretty convinced that the CRC-16 used by IBM was 16 15 2 x + x + x + 1 This would give the

Re: Old Nokia/alfaskop 3270 terminal

or VM. > OK. The 4101 comm processor only speaks BSC. Need other software to do SNA /SDLC. On the other hand BSC is much easier to understand than the SNA stuff. At least for me who is not used to IBMish. I did manage send a POLL to the comm processor and received back a valid STATUS message

Re: Old Nokia/alfaskop 3270 terminal

Hi! What kind of Alfaskop terminal do you have? Incidentally, me and a friend has been working quite a lot with Alfaskop terminals lately. I have been refurbishing a complete Alfaskop S41 terminal cluster with terminal , floppy unit and terminal controller. In the process I have dumped all

Re: SMD disk specifications

måndag 16 december 2019 skrev Eric Smith via cctalk : > On Sun, Dec 15, 2019 at 3:05 AM jim stephens via cctalk < > cctalk@classiccmp.org> wrote: > > > I don't know that I recall SMD being a product as much as a reference to > > the interface they had though. > > > > "SMD" was in fact a product

Re: SMD disk specifications

lördag 14 december 2019 skrev jim stephens via cctalk : > > > On 12/14/2019 1:10 AM, shad via cctalk wrote: > >> Hello, >> I also was searching about a clear SMD specification years ago, I found >> something in disk documentation from CDC, but doubts remain, because some >> disks call the

DEC documentation

I have updated my inventory of DEC documentation with the latest arrivals from Gunnar, the ex-DEC FS tech. Those were mostly binders of software documentation and handbooks. If there are a document that you would like to have scanned I will do my best to help out. But please do me a favour to

VT420 drawings

I got heaps of documentation from an ex-DEC field service engineer. Among them there were a VT420 print set. I didn't see any schematics for the VT420 on bitsavers so even though this one looks a bit strange it is better than nothing.

Strange DEC stuff.

An ex-DEC engineer offloaded some strange stuff that was going to the skip. I just thought I could have a look. But what is it? There is two backplanes marked KA14 and BE14. I thought it was the PDP-14, but I am not sure really. https://i.imgur.com/86tcLFz.jpg https://i.imgur.com/BWiCz8l.jpg I

Eyring PDOS - paging Camiel Vanderhoeven

I have a odd TMS9900 machine with floppy drives that would be interesting to get an operating system runnig on. The Eyring institute PDOS looks interesting and I have found a page describing it. https://www.vaxbarn.com/index.php/other-bits/105%20-pdos Unfortunately none of the download links

IBM 5110 power supply schematics?

It turned out my friend was wrong. The power transformer is most likely ok. But one of the main choppers were short circuited (yes, it is a switcher, again to little info from my friend). Anyway. The chopper transistors were TI made in 1978 but marked T484. Probably some IBM marking which no one

Re: IBM 5110 transformer?

Really good point. Thanks! I will check with my friend. /Mattis Den mån 30 sep. 2019 kl 16:46 skrev Paul Berger via cctalk < cctalk@classiccmp.org>: > > On 2019-09-30 3:44 a.m., Mattis Lind via cctalk wrote: > > A friend of mine is trying to repair a IBM 511

Re: IBM 5110 transformer?

A custom transformer is going to be quite expensive. About the only way is > to cannibalize another machine. > Dwight > /Mattis > > -- > *From:* cctalk on behalf of Mattis Lind > via cctalk > *Sent:* Sunday, September 29, 2019 11:44 PM > *To:*

IBM 5110 transformer?

A friend of mine is trying to repair a IBM 5110. He is convinced that the transformer is bad. Anyone knows the spec of the transformer? Someone that has a spare? Looking into the tech documentation tell me that the machine requires +/- 5V and +/- 12 V and also +8.5V A very rough guesstimate

Re: Help identifying mystery Unibus board

Den tis 24 sep. 2019 kl 09:11 skrev Josh Dersch via cctalk < cctalk@classiccmp.org>: > Hi all -- > > Found this in a stack of boards, and I don't know what it is, other than > that it's Unibus -- there's a logo but no text identifying the board or the > manufacturer. Anyone recognize the logo in

Re: Tektrionix VAXBI board and DC100 training tapes?

lördag 21 september 2019 skrev Mark J. Blair via cctalk < cctalk@classiccmp.org>: > > > > On Sep 21, 2019, at 11:19 AM, Al Kossow via cctalk < > cctalk@classiccmp.org> wrote: > > I've got over a hundred TU58s I need to look at some day as well. > > Fixed the pinch rollers on some TU58s a year or

Tektrionix VAXBI board and DC100 training tapes?

An ex DEC engineer offloaded some stuff that he had found in his attic. https://i.imgur.com/413NSSL.jpg?1 It came together with a tektronix 1241 Logic Analyzer. Someone that can tell more about it? Then there were some DC100 tapes in a huge heap of TU58 diagnostic tapes for VAX-11/730 and

Re: Ferroresonant transformer supply repair

måndag 9 september 2019 skrev Kyle Owen via cctalk : > On Sun, Sep 8, 2019, 20:39 Guy Dunphy via cctalk > wrote: > > > > > > >We recently replaced the ferroresonant capacitor in a power supply on > the > > CHM's > > >PDP-1. They do fail (thankfully, not often) - and they are not > >

Re: eBay: PDP-8/A KL8A serial line card

Den tors 8 aug. 2019 kl 13:01 skrev Bill Gunshannon via cctalk < cctalk@classiccmp.org>: > On 8/7/19 3:07 PM, Noel Chiappa via cctalk wrote: > > > From: Paul Anderson > > > > > $325?? > > > > I have some KL8A with the 4 DSUB BC08W cable in case someone want to trade for something

RE: Scanning question (Is destruction of old tech docs a moral crime?)

> >> BTW. I have three IBM 026 card punch machines as a future restoration > project. But can I find > >> a service manual? No. None online, only one for the later 028. And even > if there was a PDF Have you seen these: http://www.bitsavers.org/pdf/ibm/punchedCard/Keypunch/A24-

What connector is this?

I am looking for the mating male connector. Anyone that has an idea what connector this is? There is nothing indicated on the connector itself about what the manufacturer it is. https://i.imgur.com/YzAfB2g.png /Mattis

Re: Wtd: advice upcoming visit to Bletchley Park / comp museum

lördag 6 juli 2019 skrev Bill Degnan via cctech : > Hi...I am arriving at Gatwick Airport this weds evening1045pm and I have a > 17 hour layover. I'd like to visit the national computer museum at > bletchley park about an hour north. I see I can rent a car from the > airport and drive to a

Dumping MC6801 ROM contents.

I have been asked to dump the ROM contents out of the MC6801 in the Ericsson PC keyboard to get the MAME emulation fully working. The guy that is doing the emulation says this is the only thing missing and would be nice if I could help him getting it finalized. It is supposed to be quite easy.

Alfaskop terminals and SPL programming language.

I have been scanning a few manuals and brochures related to the Alfaskop series of IBM 3270 compatible and Uniscope 100 compatible terminals. http://www.datormuseum.se/peripherals/terminals/alfaskop Unfortunately very little seems to be saved regarding this series of quite successful terminals.

Re: M7264 Troubleshooting

Den tors 23 maj 2019 kl 14:14 skrev Noel Chiappa via cctalk < cctalk@classiccmp.org>: > > From: Jon Elson > > > Yes, this is most likely a bus timeout > > The good news is that it looks like his CPU is 'mostly' working; and if > the NXM is due to a fault on the CPU (e.g. bad bus

RCA Spectra 70 manuals on Ebay

Maybe of interest to someone? I didn't find the Cobol manual on Bitsavers. https://www.ebay.com/itm/372663250835

Re: VCF/PNW Exhibit & Trip Report - The Old Calculator Museum

torsdag 28 mars 2019 skrev Noel Chiappa : > > From: Mattis Lind > > > It is KATIA. Peter Lothbergs collection. > > Ah. I wonder where it came from originally? It has been in use at STACKEN at least since the beginning of the 80ies until maybe mid nineties. STACKEN

Re: VCF/PNW Exhibit & Trip Report - The Old Calculator Museum

Den tors 28 mars 2019 kl 14:17 skrev Noel Chiappa via cctalk < cctalk@classiccmp.org>: > > From: Rick Bensene > > > upstairs to the computer room and take some photos of the KA-10 > > Wow! That's a rara avis indeed; I wasn't sure there were any left. Does > anyone know where this one came

Re: George Comstock

Den tis 26 mars 2019 kl 18:08 skrev Chuck Guzis via cctalk < cctalk@classiccmp.org>: > On 3/26/19 8:53 AM, Al Kossow via cctalk wrote: > > > https://www.almanacnews.com/news/2019/03/25/george-comstock-silicon-valley-pioneer-and-portola-valley-civic-leader-dies > > Thanks for that--I remember

Re: Tape reading question

tisdag 12 mars 2019 skrev Al Kossow via cctalk : > > > On 3/11/19 10:42 PM, Mattis Lind via cctalk wrote: > > A few years back AJ Palmgren helped me recover data from a S8000 tape > using > > his hacked QIC drive. > > Did you ever put the tape images on line anywher

Re: Tape reading question

A few years back AJ Palmgren helped me recover data from a S8000 tape using his hacked QIC drive. He fed the data coming off the drive into a Saleae logic analyzer. I took the gigantic dumps and wrote a software decoder. The data on the tape are MFM encoded. It went pretty well and I could

Trio laboratories inc PSU schematic?

Does anyone have schematic for a Trio Labs PSU made in 1975 https://i.imgur.com/MTwcpRA.jpg It is a primary side switcher made in 1975 outputting 100 Amps 5Volt. Quite early for being primary switcher I would guess.

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

torsdag 7 februari 2019 skrev Fritz Mueller via cctalk < cctalk@classiccmp.org>: > > > How about a Unibus trace? That would give you the RK11 commands as well > as the data it sends in response. > > I don't think my sad little HP LA has enough buffer for that... You could use triggers in

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

Den tis 5 feb. 2019 kl 00:23 skrev Fritz Mueller via cctalk < cctalk@classiccmp.org>: > > > On Feb 4, 2019, at 2:28 AM, Noel Chiappa via cctalk < > cctalk@classiccmp.org> wrote: > > > > I'm pretty sure the command only gets a few instructions in before it > blows > > up. Here are the process'

Re: How to refurbish plotter pens?

It has been almost two years since I visited this topic. But just before christmas i got around doing something about it. I interfaced it to the PDP-11/05 using an XY11 board. It seems to be very little information on the XY11 board saved. At least I didn't find anything. But the board is a quite

Re: SPACE WAR for PDP-11 - link issues

Success sort off! > > the source paper tapes for fpmp are at > http://bitsavers.org/bits/DEC/pdp11/papertapeimages/20040101/tray07 > > TRAY07 > > dec-11-nfpma-a-pr1 8/72; fpmp-11 single precision package; replaces: > dec-11-yqpc-pb; (c)1971,72 > dec-11-nfpma-a-pr2 8/72; fpmp-11 double precision

SPACE WAR for PDP-11 - link issues

So after some intensive transcribing work I finally got all files into source files ready for assembling using PAL11-S. Assembling under PAL11-S rooted out a bunch of errors and then when side by side comparing the output listing with the PDF I found a bunch of more errors. The next step

OCR old software listing.

Finally I got hold of the sources for the PDP-11 SPACE WAR that was submitted to DECUS by Bill Seiler. The format is scans of the PAL-11S listing output. It is easy to crop the image to only contain actual source. Then running OCR on it. Tried a few online versions and tesseract. The problem is

Re: Which DEC machine made use of th pre Flip-Chip board?

/pdf/dec/pdp6/F-67_circuitInstr_May66.pdf Which confirms that is from a PDP-6. Page 3-13. It also makes sense since one of the other boards from the same seller has a tag on it which indicate PDP-6. Case closed.. > > Rod > > > On 21/12/2018 10:49, Mattis Lind via cctalk wrote: > > There is a

Which DEC machine made use of th pre Flip-Chip board?

There is an auction for some kind of early DEC module. It appears to be a bit slice of MB, AR and MQ. There is also a signature by Gordon Bell on the board. But I cannot figure out which early machine it comes from.

Re: GCC for pdp11

Hello Paul! When I read this once upon during the summer I saw that the problems I once had reported was solved and it was great news. Really thankful that you did so much work with this! However I know tried to turn on optimizations and then it fails in a strange way. If you have some spare

Re: CDC floppy disks on Ebay.

söndag 9 december 2018 skrev Warner Losh : > > > On Sun, Dec 9, 2018 at 2:41 PM Mattis Lind via cctalk < > cctalk@classiccmp.org> wrote: > >> Don't know if this worth saving. https://www.ebay.com/itm/283294561797 >> >> 8 inch CDC disks from 1982. Maybe somet

CDC floppy disks on Ebay.

Don't know if this worth saving. https://www.ebay.com/itm/283294561797 8 inch CDC disks from 1982. Maybe something interesting?

Re: DECUS PDP-11 SPACE WAR?

Den fre 7 dec. 2018 kl 23:04 skrev Al Kossow via cctalk < cctalk@classiccmp.org>: > > > On 12/7/18 1:25 PM, Mattis Lind via cctalk wrote: > > Anyone has old DECUS distributions? > > For all intents and purposes, no > > DECUS threw them out. > Sad. &g

DECUS PDP-11 SPACE WAR?

Anyone has old DECUS distributions? I am looking for the PDP-11 SPACE WAR program. It is supposed to be 11-192, written by William (Bill) Seilier and Lawrence (Larry) Bryant in 1974. https://i.imgur.com/rjaWX4X.png It is a space war like program for the PDP-11/10 with AA11 and AD01. Much later

Re: Removing PVA from a CRT

> > The heat pads are worth a shot if they can maintain temp long enough to do > the job, though you'll be up against quite a bit of thermal mass with that > thick glass. The old trick that people are still using today with vintage > 21" CRT's is to put them in a kiddie pool outside and let the

Re: Documation TM200 card reader - pinch roller restoration

Den tis 16 okt. 2018 kl 11:52 skrev Guy Dunphy via cctalk < cctalk@classiccmp.org>: > Previously: Manual for Documation TM200 punched card reader > > Restoration of the mechanics of my TM200 punch card reader progresses. > There's a writeup here: >

Re: Source code listings from REDAC PDP-based PCB layout system.

Den tis 2 okt. 2018 kl 00:27 skrev Al Kossow via cctalk < cctalk@classiccmp.org>: > I'm interested. > PDP-15 software in any form is pretty rare > > > Good that we have a taker. I have no such scanner available that could possible scan these in a good way. I will retrieve them and pack them and

PDP-15 documentation

I have now finally concluded the PDP-15 documentation scanning project. Many year ago my father saved a big lot of PDP-15 documentation that was thrown out from Philips in Stockholm. I have over the years scanned documents on request which has ended up at bitsavers. Some docuements were already

Source code listings from REDAC PDP-based PCB layout system.

I have a set of around 5 to 8 binders with printed source code listings from a PDP-15 system. The listings appear to be from a REDAC SOFTWARE LIMITED PCB CAD system. The name of the software seems to be REDAL 3 MARK 7. There are dates on the listings in the range 74 and 75.

RA60 head #4

I have what I believe is an unused RA60 head #4. At least the surface looks very clean. Someone has written "RA60 04" on the side of the box. On the top there is handwritten 70-18661-04. https://i.imgur.com/RNK0FOTl.jpg I could use a RL02 or RL01 head as a trade if someone is interested.

IBM 3270 MCA card available

I have some kind of IBM 3270 MCA board available for the cost of shipping from Sweden. IBM P/N 26F0191. Have no way of testing it, but it was pulled from an otherwise working machine. https://i.imgur.com/jBBDrcnl.jpg /Mattis

Re: DEC H744 +5 supply

The H744 is a buck converter. You can read about buck converters here: https://en.wikipedia.org/wiki/Buck_converter You have a good description there. Den fre 21 sep. 2018 kl 22:03 skrev Noel Chiappa via cctalk < cctalk@classiccmp.org>: > Oh, one thing I forgot to include: > > > a lot of

Re: ISO 70's and 80's coax and twinax terminal docs/brochures

Den ons 19 sep. 2018 kl 18:15 skrev Al Kossow via cctalk < cctalk@classiccmp.org>: > I've started to more aggressively archive material on old IBM and > compatible coax and twinax > terminals and was wondering if anyone has documentation scanned or > squirreled away that I don't > already have on

Re: Dilog DQ604 RL01 / RL02 emulation on ST506/ST412 disk.

> > It seems to be well known that the number of each size you get in the > SF-7000 package is, umm, random... so a guy needs to get several packages > and hope for plenty of white ones. > The box is marked "Made in Japan" so I started to check for other sources. Then I found "Nisshinbo Mobilon

Re: Dilog DQ604 RL01 / RL02 emulation on ST506/ST412 disk.

Den tis 28 aug. 2018 kl 19:50 skrev Chris Elmquist : > On Tuesday (08/28/2018 at 11:25AM +0200), Mattis Lind via cctalk wrote: > > Den sön 26 aug. 2018 kl 09:26 skrev Paul Birkel via cctalk < > > cctalk@classiccmp.org>: > > > > > Which length band did y

Re: Dilog DQ604 RL01 / RL02 emulation on ST506/ST412 disk.

block number wise. Probably have to manually recreate the structure using dd? /Mattis > > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mattis > Lind via cctalk > Sent: Wednesday, August 22, 2018 2:50 AM > To: General Discussion

Scans of VT05, RK05 and PC04 IPB, TC11 Formatter doc and DC013 chip doc

I scanned some more documents: The version of the TC11 formatter manual online is not matching the binary that is available. This one is a later version which is a better match. http://storage.datormuseum.se/u/96935524/Datormusuem/DEC/DEC-11-YPTC-D_TC11_DECTAPE_FORMATTER.pdf I found three IPBs.

Dilog DQ604 RL01 / RL02 emulation on ST506/ST412 disk.

I unearthed some old TU58 tapes that luckily was readable (after carefully replacing the tension band) It resulted in two RT11 V4 images with two versions of the formatter program. One is bootable and the other not. http://storage.datormuseum.se/u/96935524/Datormusuem/Dilog/DQ604/sq604c.dsk

General Electric Terminet 30 manuals?

Continuing this thread with requests for heavy printers and the like. Is there anyone that has manuals for the GE Terminet 30? https://i.imgur.com/8Q0Mf2d.jpg /Mattis

Oliverti Te300 teleprinter manuals?

Does anyone have any type of manuals for the Olivetti Te300 teleprinters? Preferebly maintenance manuals or similar. https://vads.ac.uk/diad/bres/pub/COID/231/32.jpg

Re: RK05 spindle pulleys - trade 50Hz vs 60Hz?

2018-07-26 6:21 GMT+02:00 Paul Anderson via cctalk : > I can't find my IPB, but the maintenance manual shows there were both 50 > and 60 hz versions made. > > I think I've shipped them overseas, but never modified them. I did ship a > lot of RX02 drives overseas, and to properly convert them the

Re: DEC power connectors (UNIBUS PDP-11s, mostly)

> They are 'Commercial Mate-n-Lok', now made by TE Connectivity, who bought > AMP. > Here are the current part numbers: > > VAX (VAX-11/750 specifically) but I assume many DEC machine of the same vintage uses Universal Mate-N-Lok series. This what I bought a couple of years ago to have handy

Re: Scanned a few DEC manuals.

version that already is available at bitsavers. 2018-07-25 9:07 GMT+02:00 Mattis Lind : > http://storage.datormuseum.se/u/96935524/Datormusuem/DEC- > MS11-HMSB-D_PDP11_45_MS11_semiconductor_memory_systems_ > maintenance_manual.pdf > > The MS11 main manual above seems to be a later versi

Re: ABLE, other non DEC boards.

> > While looking for the ABLE (ACT) board that Mattis was talking about (and I > found it for a list member who has first dibs on it) I came across: > > > It is likely that the one that wanted the Cache/45 board also wants the double dual board that goes into slot 26 AB and 27 AB. I cannot tell

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

> > The sandwiched dual boards are sitting in 27 / 26 AB. The board in > 27AB > > was empty (quick glance), while the board in 26AB has a few TTL chips > > on it. Slot 26AB is the Unibus A slot, Slot 27 AB should be a > > terminator on Unibus B. > > I'm more interested in _what_

Scanned a few DEC manuals.

http://storage.datormuseum.se/u/96935524/Datormusuem/DEC-MS11-HMSB-D_PDP11_45_MS11_semiconductor_memory_systems_maintenance_manual.pdf The MS11 main manual above seems to be a later version than the one already available

RK05 spindle pulleys - trade 50Hz vs 60Hz?

Hello! I have two RK05J-AA as part of a system that I guess has been imported used form the US. A DC-10 simulator. The only difference is the pulley, the motor position and a 230 / 115 V jumper inside. Is there anyone in 60Hz land that has the opposite problem and want to trade two spindle

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

> > > Studying the MS11 Maint Manual, the MS11 controller has access to the full > address and data from both the CPU (FastBus) and UNIBUS B. (The FastBus > actually has two uni-directional data busses; in and out.) So all that > info, > this hypothetical cache board can get from the slot it is

Strange third party board in PDP-11/45

manual for the board might turn up. > > What are the pair of DIP24 ICs on the lower-left? Fairchild 9308 Dual 4 bit latches. > > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Paul > Anderson via cctalk > Sent: Saturday, July

Strange third party board in PDP-11/45

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. Fairchild 93415 1kbit SRAM. The manufacturer might be ACT whatever that is. My guess is that it is some kind of cache board? It is connected to

Re: zilog system 8000

> > I seem to remember the original QIC11 standard was (or at least included) a > 4 track version. And the later 9 track format kept those 4 tracks in the > same > place and put 5 more, one on each side and 3 between them if you see what > I mean. > > So unless you need to read 2 tracks

Re: zilog system 8000

I have one model 21 and one model 11. Finch drive and ST506 drive respectively. Not sure about the status of disks, but I have a spare Finch drive. I also have three install tapes. One Sadie 3.5 and two ZEUS 3.21. When time permits I will read those. AJ Palmgren read a tape with a tar archive I

CDC 9762 drive, alignment disk and exerciser on Ebay.

Someone is selling a drive that was just taken out of service ! And alignment disks and exercisers for CDC 9762 (it doesn't look like a 9766 / RM05 even though it says so in the listing) Probably useful to RM02 or RM03 owners as well.

Re: ISO: DECtape controller

2018-05-16 13:08 GMT+02:00 Noel Chiappa via cctalk : > > From: Josh Dersch > > > the TU56 lacks the G888 flip-chips necessary to work with the TD8E; I > > know these parts are in short supply, but in the unlikely event that > > anyone has (a) a set of 5 G888

Re: Old core memory system.

2018-05-05 17:20 GMT+02:00 Jon Elson <el...@pico-systems.com>: > On 05/05/2018 04:57 AM, Mattis Lind via cctalk wrote: > >> Can anyone tell what kind of computer this might have been connected to? >> >> https://i.imgur.com/IC3AVCf.jpg >> >> The panel jus

Old core memory system.

Can anyone tell what kind of computer this might have been connected to? https://i.imgur.com/IC3AVCf.jpg I googled MS8192X26-1.9-RT and found one hit: http://www.nsn-now.com/Indexing/ViewDetail.aspx?QString=7025013480747 And then FABRI-TECH (maybe miss-spelled) gave a nice broschure:

Re: RT-11 V4 MU-BASIC help

> Oops! Sorry. Dropbox removed deeplinking to dropbox files and I started to > move files to new storage solution. But many files are still on the todo > list. I fix those files asap.. > > I'll get back soon. > Fixed now (I hope). > > /Mattis > > >> >> thanks much, >>

Re: RT-11 V4 MU-BASIC help

fredag 30 mars 2018 skrev Fritz Mueller via cctalk <cctalk@classiccmp.org>: > > > On Mar 29, 2018, at 9:53 PM, Mattis Lind <mattisl...@gmail.com> wrote: > > > > I have imaged some RX01 and RX02 floppy disks with RT11 V3B and MU > Basic. http://www.datorm

Re: RT-11 V4 MU-BASIC help

fredag 30 mars 2018 skrev Fritz Mueller via cctalk : > Hello all, > > I would like to try and get MU-BASIC working on my PDP-11/45, under RT-11 > V4. The best bits I've been able to find to work with so far are the RK05 > image here: > >

Re: LSI11 CPU Microm

lördag 24 mars 2018 skrev Douglas Taylor via cctalk : > I was trying to put together a minimal PDP-11/03 using a quad width M7264 > CPU and got nothing, no ODT prompt. I'm not sure the board is working. > > Searching the internet I came across this page which described a

LSP10-NW (printer interface for KI10?)

I have received this for a retired DEC service engineer: https://i.imgur.com/pJkcsHe.jpg?1 https://i.imgur.com/zwpSbrg.jpg According to the label it is a LSP10-NW made by DEC CSS. Previous owner claims it is for a KI10. I don't really know. I have no real use for it except for the flip-chips.

Re: UCSD p-system manuals and disks?

gt; b > > On Tue, Feb 20, 2018 at 11:15 AM, Mattis Lind via cctalk < > cctalk@classiccmp.org> wrote: > >> I received these nice binders. >> >> https://i.imgur.com/L80ZGusl.jpg >> >> I think that most of them are already available online. Not sure about

Re: Four Unibus boards from radiation dose measurement system.

måndag 19 mars 2018 skrev Al Kossow via cctalk : > > > On 3/19/18 8:57 AM, Lyle Bickley via cctalk wrote: > > >> 2914 chips. One board has some kind of dedicated memory one board has > >> 4 TRW chips which I think are AD converters. > >> > > It's a frame buffer, you can see

Four Unibus boards from radiation dose measurement system.

Hello! I have four unibus boards that came in a 11/34 which was used for radiation dose measurement at a hospital. Three of them are made by Computer Design & Application inc and is a three board set interconnected with over the top flat cables. It has some kind of AMD 29xx based bitslice

Sanyo PHC-3100 (or PHC-3000) ?

Does anyone have more info on these Japanse machines. I collected the infomation I got from the former owner of a PHC-3100. Interesting machines based on the TMS9900. http://www.datormuseum.se/computers/others/sanyophc3100-1 I have 32 floppies which was dumped using ImageDisk. 40 tracks, double

Re: VT52 microprogram

fredag 9 mars 2018 skrev Lars Brinkhoff <l...@nocrew.org>: > Mattis Lind writes: > > Lars Brinkhoff wrote: > >> Does anyone have VT52 microprogram ROM image, a listing, or a copy of > >> "DECscope System Manual"? > > I did dump the micro

Re: VT52 microprogram

2018-03-09 10:47 GMT+01:00 Lars Brinkhoff via cctalk : > Hello, > > Does anyone have VT52 microprogram ROM image, a listing, or a copy > of "DECscope System Manual"? > I did dump the microprogram of my VT52. I also did a very crude first attempt to disassemble it. Since

Re: DEC Pro 350

fredag 23 februari 2018 skrev Kurt Hamm via cctalk : > Well, I bought that DEC Pro 350 on ebay. It initially booted up and I got > the error screen. The error code I found on the Internet was related to > the hard disk controller. So, I thought I just needed someone to

What are these memory modules?

Can anyone tell me which system these belongs to? https://scontent-arn2-1.xx.fbcdn.net/v/t1.0-9/28058349_10155950589854985_8635795214284744688_n.jpg?oh=c0be0a30ee09cd98cb69ed728375520b=5B02220D /Mattis

UCSD p-system manuals and disks?

I received these nice binders. https://i.imgur.com/L80ZGusl.jpg I think that most of them are already available online. Not sure about the UCSD Pascal manual? One of the binders contained some disks. https://i.imgur.com/FYIBbmjl.jpg Are these disks available online already or should I dump

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