test-drb

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101090 discussions

by wayne.sudol＠hotmail.com

Is anyone from this list bidding on this. If so i?ll back out. Just don?t want it to be ?recycled ? and i have room for it. https://www.ebay.com/itm/Digital-DEC-BA23-Lot-Micro-PDP-11-73-VAXstation-32… Sent from my iPhone

5 years, 1 month

digital group's Richard Bemis

by unclefalter＠yahoo.ca

Hi there, I am working on a 30 minute historical video about the digital group. For source material there isn't a ton of stuff out there unfortunately and much of the account of what happened to the company comes from the late Dr. Robert Suding. In his account, Suding sort of points fingers at Richard "Dick" Bemis for mismanagement of the company. I am wondering if anyone knows what became of Mr. Bemis after his stint running dg. Apart from a couple of (slightly snarky) letters to Dr. Dobb's Journal when dg was still operational, there's literally no trace of him on the internet. If he's still around I'd love to get his side of the story to balance things out, or at least find out what he did afterwards. Thought I'd write here in case anyone knew. Brad

5 years, 1 month

PIC programmers? More generic programmer? Port?

by compoobah＠gmail.com

Looking for suggestions on hobbyist PIC setup. So far I have just used Arduino type direct-connect microcontrollers (back in the day programmers for general devices were expensive), but the currently existing SGI proprietary system to PS/2 keyboard adapter is PIC (and I have a couple different systems that all use my single SGI proprietary keyboard). Any gotchas with the PICKit-3 clones out there? I have the feeling that sticking with PIC would be better than trying to port to Arduino, and imagine that as things continue to age there will be more applications for interfaces. Any better but still cheapish alternatives for programming?

5 years, 1 month

TSS/8 & dectape

by djg＠pdp8online.com

I'm having trouble using DECtapes with TSS/8 under SIMH. I tried with both the RF image and LCM RK05 image and no mater what I do it hangs if I try to access a DECtape. I am trying to use COPY command from account 2. I attach a dectape in simh then assign it in TSS and then try to get a directory or zero the tape with copy. Both hang. Anybody with more TSS knowledge know how to get this to work. Images from bitsavers http://www.pdp8online.com/ftp/images/bitsavers/unknown/ 7196, 7211, 7242, and 7280 have text where TSS/8 was mentioned. These are the ones I wanted to use TSS to see if I can get a directory. 7241, 7253, 7264, 7265, 7275, 7278, 7291, 7292 have contents but nothing I can identify. There are also some LINCtapes that had read issues so unable to determine what the are. What I have decoded http://www.pdp8online.com/images/index.shtml See last 3.

5 years, 1 month

FS: Large Collection of HP LX Palmtop Items in Germany

by r_a_feldman＠hotmail.com

I am posting, with permission from Daniel, the following "For Sale" message from the HPLX Mailing List for a large collection of HP LX Palmtop hardware, software and books. Daniel Hertrich has been a major contributor to the HPLX List, creating a backlight mod, and doing HPLX repairs. His web site, www.hermocom.com, has been an important repository of information about the HP Palmtops. He can be reached at daniel at hertrich.photo and is located in Bavaria, Germany. I have no interest in the sale, etc. Regards, Bob <Begin Forwarded Message> Hi friends :) In short (longer text below): You can see my collection in detail here: https://360bayern.de/pano/daniels_palmtop_collection/index.html (zoom in with zoom gesture or scroll wheel) 2,000 ? total for the entire collection. Shipping or delivery from Bavaria, Germany. You can hover over each item and get a description tooltip (except for items that are self-explanatory, such as the books), some are even clickable, and the click leads to a website describing the item. Most clicks lead you to my own website www.hermocom.com, because I documented a lot of the stuff that I worked on back then. :) If you like to provide more link targets for the items, please do so. then I'll gladly add them. Note that for the high-resolution image (300 Megapixel) I used panorama software to stitch 10 individual images, so you can zoom in and see a lot of details of the single items. But given the unusual "panorama" setup for capturing the collection, there are stitching errors in the image, so some items look as if they might be broken, but they are not. ;) You can always switch to the lower-resolution standard image (40 Megapixel) to check that there is really no crack in the item. The descriptions and (obviously) the high details when zooming, however, are only available in the high-resolution image. So here comes the longer text: :) No, I won't say goodbye to you! I'll stay here with you. And I'll keep a few items from my collection for myself. But the rest of my collection has to go. The Palmtop hobby was a really great one for me, probably the most important one, until I began with photography. I learned so much during all these years since 1997, when I bought my first 200LX. Until 2005 the 200LX even was my main computer (i.e.: the one I used most). I started so many hardware and software projects to support my own work and also the community, and I got a lot of support from you, the community, as well. Thank you so much for that, and for all these years of fun! :) I have (even until now!) never been part of a community that I gave to and got from that much support and heart-warming talks, even if the topic was most of the times a very unemotional one: Computers! I've even built my own small business around all that ("hermocom - hertrich mobile computing"). The business was never really "successful" in the sense of earning money, but that was not important to me. Important was, that I could take the money earned from it and invest it into new research, new projects, new hardware, to keep it all going and constantly improve. I think, the most important success (again, not in the monetary sense) was the development of a feasible and relatively affordable backlight solution for the 200LX, made possible by the great help of Hal Goldstein and his team at Thaddeus Computing by handing me over their material they got from their own research in this field. I will keep two used 200LXs and one 1000CX, as well as a few important accessories (an LED light, one 200LX has a backlight, some PCMCIA cards etc.) and spare parts, but all the remaining parts and devices, even two like-new(!) 200LXs just take up space here and only once a year or so they give me nostalgic feelings and a smile. Given that I am currently in a financial emergency situation with my photography business, that's heavily damaged due to the Corona situation, I clearly need the money more than the nostalgic feelings. :) For each item in the collection (except for almost all the books and a few trivial items, which I will add for free), I estimated a value, then summed up these values and resulted in a total value of 2,300 ?. I would prefer to sell the collection in its entirety, and would offer the entire collection for 2,000 ?. That price does not include shipping costs. In case nobody wants to buy the entire collection for a couple of weeks, I'll probably slice the collection into smaller chunks or offer items one by one. If you are interested in a particular set of items (collection chunk), let me know. I may consider that. The collection fits into a standard-sized moving box, with not much padding. For shipping, I'd like to add much more padding, so that it would probably take 2 moving boxes for shipping. Within Germany, I would deliver the collection in my area for free (85077 Manching, near Ingolstadt + 100km). I'd also consider delivering it within a wider distance against a refund of my driving costs. That would maybe be cheaper than parcel shipping for two heavy moving boxes and it would allow for a beer and a good talk :) Okay, so now have fun exploring my collection. :) If you are interested or have questions, you may contact me at daniel at hertrich.photo. ....This is quite an emotional step for me... Oh boy. Daniel

5 years, 1 month

RSTS processor identification

by jnc＠mercury.lcs.mit.edu

> From: Paul Koning > Here is an outline (not all the details) of the hardware scan flow: > ... > 2. Make sure the MMU exist; if not, halt. > ... > If it has FIS, it can only be an 11/40. You probably know this already, but the KEV1-A floating point chip for the LSI-11 also implemenred FIS. (Of course, the LSI-11 would fail step 2, so it's not really a factor here.) Noel

5 years, 1 month

Pdp10 and TOPS 10 stuff

by hachti＠hachti.de

Hi, I habe some pdp10 related docs which need to go away. Anybody interested? Or should I dump it (and reuse the white folders foro pdp8 stuff)? https://www.icloud.com/sharedalbum/#B0r5oqs3qGclUOi Kind regards Philipp -- Dipl.-Inf. (FH) Philipp Hachtmann Buchdruck, Bleisatz, Spezialit?ten Klus 16 31073 Delligsen Mobil: 0171/2632239 UStdID DE 202668329

5 years, 1 month

pdp11, pdp8 prototyping boards

by emu＠e-bbes.com

Don't know if you guys know about them, I just tripped over them... https://www.tindie.com/products/glitchwrks/gw-dec-1-prototyping-board-for-p… Cheers

5 years, 1 month

[TUHS] A stack of PDP-11 field maintenance print sets

by jnc＠mercury.lcs.mit.edu

> From: John Floren > Can anyone on the list point me to either an existing archive where > these exist The canonical repository for historic documentation online is BitSavers. It has an almost-complete set of DEC stuff (both manuals and prints. QBUS devices are at: http://www.bitsavers.org/pdf/dec/qbus/ QBUS CPU's will be in the relevant model directory, e.g.: http://www.bitsavers.org/pdf/dec/pdp11/1123/ and disk drives are in: http://www.bitsavers.org/pdf/dec/disc/ I haven't checked your list, but I suspect most of them are there; I think the ADV11-A prints are missing, though. You can either send the originals to Al Kossow, or scan them for him; but check with him first, to make sure he doen't already have them, just hasn't got around to posting them yet. There's another site which indexes DEC online documentation: https://manx-docs.org/ There are a very few things which aren't in Bitsavers, and can be found there. > KFD11-A cpu I assume that's a typo for 'KDF11-A'? Noel

5 years, 1 month

Fwd: [TUHS] A stack of PDP-11 field maintenance print sets

by jfoust＠threedee.com

> >From: John Floren <john at jfloren.net> >Date: Fri, 5 Mar 2021 14:51:40 -0800 >To: The Eunuchs Hysterical Society <tuhs at tuhs.org> >Subject: [TUHS] A stack of PDP-11 field maintenance print sets > >I've been hauling around a pile of DEC Field Maintenance Print Sets >for PDP-11 components for over a decade now, intending to see if >they're worth having scanned or if there are digital versions out >there already. Can anyone on the list point me to either an existing >archive where these exist, or an archivist who would be interested in >scanning them? They're full of exploded diagrams, schematics, and >assembly listings. > >Here's the list of what I have: > >Field Maintenance Print Set (17" wide, 11" high): >RLV11 disk controller >RL01-AK disk drive >ADV-11A (??) > >Field Maintenance Print Set (14" wide, 8.5" high): >RL01 disk drive >DLV11-J serial line controller >RLV11 disk controller >KFD11-A cpu >KEF11-A floating point processor >PDP11/23 >PDP11/03-L > >Absolutely not tossing them, just wondering if there are already >scanned copies available somewhere, if I should send them off to be >scanned and put online, or if I should just check in with computer >museums (I'm near the CHM, for instance) > >John Floren

5 years, 1 month

PDP 8/a for sale UK (Devon)

by gordon+cctalk＠drogon.net

I'm moving soon and need to down-size a little, so selling off my PDP-8/a. It has 16KW core and is in full working order. It has the serial IO board which I think was standard in the 8/a anyway. It's a 3-card system plus the 2 x 8KW core boards. Also included is a Vincent Slyngstad memory/rtc expansion board - not built up, so full kit form that I've not been able to assemble yet. ?1000 ono. https://unicorn.drogon.net/IMG_20210305_150415.jpg boards: https://unicorn.drogon.net/IMG_20180126_181135.jpg https://unicorn.drogon.net/IMG_20180126_181115.jpg https://unicorn.drogon.net/IMG_20180126_171659.jpg I'm based in Devon. Buyer collect (if you want to see it working) else I can make a short video and may be able to take it a little way up or down the A38/M5. Thanks, Gordon

5 years, 1 month

Looking for the numeric pad "1" key on VT-100 vintage keyboard

by cramcram＠gmail.com

Does anyone out there have a "1" key (the one in the numeric keypad, not the 1 / ! key) that they are willing to sell: me? I saw a couple of partial keyboards go fairly cheap on ePay a couple of months ago but didn't see it until it was sold. Thanks, Marc Howard

5 years, 1 month

Intellec MCS-8 8008 monitor program ROM files

by roelof_klaas＠yahoo.com

Hello everyone, Does anyone have the?Intellec MCS-8 8008 system monitor ROM files? According to the Intellec MCS-8 manual the System Monitor is contained in five 1702A PROMs.My ROMs have a disk loader, but the disks system is long gone... Any papertape software is also welcome for this machine! Thanks in advance!Regards, Roland Huisman

5 years, 1 month

SPARCengine CP1200

by rp＠servium.ch

I just acquired a Sun SPARCengine CP1200. To my knowledge the CP1200 is the only 32bit SPARC with a PCI bus, which makes it pretty cool. It was also extremely unpopular, because who wants a 100MHz MicroSPARC IIep when you can have a SPARCengine CP1500 with a 270MHz UltraSPARC IIi (they were released at the same time, and I suspect the cost difference wasn't all that much). Would anyone know where I can find a Sun PROM image? mine has a VxWorks ROM, but I'd rather run Solaris on it. I've searched everywhere, and couldn't find anything. Most "usual" places (e.g. the FE handbook) barely acknowledge its existence if at all. AFAIK this predates field upgradeable flash PROMs, so it's not hidden in a patch somewhere. thanks Rico

5 years, 1 month

Searching for Elevated socket

by brain＠jbrain.com

IN my continuing Digitalker saga, I did find a couple not horribly priced Digitalker ICs online and purchased them.? As one arrived, I found that my original IC was actually OK, but the cable from the computer to the device has issues. I've traced it to what looks like a heavy duty 16 pin IC socket on the board that plugs into the computer, and into which a 16 pin 2x8 .3" DIP IDC header plugs into (with the IDC cable going to another such header, which plugs into a similar socket on the main synthesizer PCB). The socket has the same basic footprint as a normal 2x8 16 pin .3" IC socket, but it's much heavier duty.? I could replace with a simple leaf socket, but would prefer to find a direct replacement. Though I am sure other manufacturers sold similar, I find that Aries sells that I need.? It's an Aries 16-8430-10 <http://www.beckwithelectronics.com/ARIES/16-8430-10.htm> (or could be an Aries 16-8480-10 <http://www.beckwithelectronics.com/ARIES/16-8480-10.htm>) elevated IC socket.? The link below shows the units: http://www.beckwithelectronics.com/ARIES/8xxx.htm Digikey has the 14 pin version in stock, but no 16 pin ones, and neither does Mouser.? I'll keep searching, but they are very expensive and I'm not sure I need 40 of them (minimum Digikey order). Thus, I am wondering if someone on list has 1 or 2 they might be interested in selling for the cause. The good news is that I was able to get the connection to work, and now the unit operates as designed. Still, I do not trust the socket. Jim -- Jim Brain brain at jbrain.com www.jbrain.com

5 years, 1 month

Massbus - was: Re: VAX 11/750

by jnc＠mercury.lcs.mit.edu

> From: Paul Koning > There's a good reason why the big disks on many DEC machines were Massbus > devices until MSCP arrived. It's quite clear on Unibus PDP-11s, which > needed Massbus both for speed and for a cleaner answer to more-than-18 > bit addressing. I follow the first sentence, but I'm confused by the second, especially "a cleaner answer to more-than-18 bit addressing". The UNIBUS MASSBUS controller/adapter, the RH11, only has 18-bit addressing on the main memory side. It does have more than 18-bit addressing on the device side, but so does the RP11 (sort of). Are you thinking of the RH70? That does have access to more than 2^18 bytes of main memory, but that's because it connects to the -11/70 memory bus (as well as the UNIBUS, which is only used for control, not data). Similar questions about the speed point; passing data through an RH11 doesn't increase the speed of the UNIBUS? Yes, the RH70 is faster, but that's because of its connection to the -11/70 memory bus. Noel

5 years, 1 month

PDP-8/I vs 8/E EAE

by kylevowen＠gmail.com

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 compatible in Mode A, and I think I agree, for the most part. At least, it's compatible for the parts that matter. When a DVI instruction results in overflow, the EAE immediately returns with the link set. The results in AC and MQ seem to have no relevance, but they appear to differ between the 8/E and 8/I. For instance, running the 8/I MUY/DVI diagnostics under SimH fails due to the following: sim> lo maindec/maindec-8i-d0ba-pb.bin sim> d sr 40 sim> g 201 DIVERR L C(AC) C(MQ) C(MB) PROB 0 000000000000 000000000000 000000000000 GOOD 1 111111111111 000000000000 000000000000 BAD 1 000000000000 000000000001 000000000000 SCA 000000000000 HALT instruction, PC: 01512 (JMP I 1506) The link is set, but obviously MQ and AC do not match. Running the same diagnostic on an 8/I works fine. I can't imagine a scenario outside of diagnostics where this behavior would impact the software, but it does seem curious nevertheless that the DVI approach to handling overflow differs slightly between EAEs on the 8/I and 8/E. Kyle

5 years, 1 month

DS20 Alpha System

by jwsmail＠jwsss.com

I've got rights to a fairly nice system located in St. Louis.? It has working streaming tapes as well as half inch, all working. It is on till this coming weekend. The full system is a single bay, I've been told is 7' tall on casters.? I won't let it be scrapped if possible, but I'd like it to go off the floor directly to someone interested and not have to use favors to get help having it moved out. It will be skinned of an addin UPS but otherwise disconnected and put to one side till it can be picked up. Told the location has dock high, but no word on how that is accessible or what type it is.? Might be able to move dock high to dock high anyway. Let me know if there's interest.? I will have to have possession of the drives, but will make sure the hardware that goes with them is kept.? I hope I can zero them and pass it along. Cabling will be boxed as appropriate and will be included. Let me know if you are interested, and pass it along.? I know it's a dual processor, but don't have other info right handy here. thanks Jim

5 years, 1 month

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

by boris＠summitclinic.com

That appears to be an earlier model of a similar system we had at UBC which could crunch arrays of FP numbers at 10 Mflops. Had it connected to an 11/44 and just recall doing some frantic programming mainly involving using minimal code as had to use memory management to allocate memory pages to get data into array processor and then fetch results. Realized at that time that a 56 Kb memory space was a bit limited for this type of work. Did FFT far faster than 11/23 (which took 1 second for 1024 points using DEC's code that shipped with MINC) but still had to do overnight runs to analyze a lot of our data. Likely have bad memories of that part of my programming career as we were under some rather tight deadlines to analyze data to get a few papers published and I much preferred writing in PDP11 assembler as very rarely had to deal with running out of memory issues with data acquisition code. Out of curiousity, decided to benchmark one of my old, really cheap PC laptops that got in 2010 and it managed 30 Mflops using double precision arithmetic. 10 Mflop performance no longer as impressive as it used to be. >I picked this up a number of years ago for reasons that entirely escape >me. It's certainly neat, but I don't see myself ever actually using it and >it's large and heavy. > >Documented here: >http://bitsavers.trailing-edge.com/pdf/fps/7259-02_AP-120B_procHbk.pdf > >Mine appears to have a DEC-style interface but I'm unsure what it talks to >on the DEC side of things. > >I can take pictures if there's interest, but it's fairly nondescript, just >a large white box with rack-mount ears and a small panel with some switches >on it. > >It's in the Seattle area if anyone wants it, and it's free! Shipping is... >not something I really want to think about right now. > >- Josh

5 years, 1 month

Any interest in RLX blade servers

by julf＠julf.com

RLX Technologies pioneered the blade server concept between 1999 and 2005 (when they got acquired by HP). I have two of their early RLX 24 blade enclosures, one fully populated with 24 transmeta-based processor blades, and the other with 19 blades. Julf

5 years, 1 month

ISO: Stabilization feet for DEC H960 rack

by derschjo＠gmail.com

I realize these are uncommon; curious if anyone has a spare pair somewhere (hey, that rhymes.) I'd like to be able to pull out the CPU on my 11/70 without worrying about the whole thing tipping over and crushing people I care about. It's the little things, really... Thanks! - Josh

5 years, 1 month

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

by derschjo＠gmail.com

I picked this up a number of years ago for reasons that entirely escape me. It's certainly neat, but I don't see myself ever actually using it and it's large and heavy. Documented here: http://bitsavers.trailing-edge.com/pdf/fps/7259-02_AP-120B_procHbk.pdf Mine appears to have a DEC-style interface but I'm unsure what it talks to on the DEC side of things. I can take pictures if there's interest, but it's fairly nondescript, just a large white box with rack-mount ears and a small panel with some switches on it. It's in the Seattle area if anyone wants it, and it's free! Shipping is... not something I really want to think about right now. - Josh

5 years, 1 month

ISO: Stabilization feet for DEC H960 rack

by jnc＠mercury.lcs.mit.edu

> From: Steven Malikoff > I have yet to machine the bolt head tapers to the originals but lost > the photo of one that was posted here some time ago. By "bolt head tapers", do you mean the special bolts with countersunk heads, or the countersunk holes in the extension feet? Whichever it was, I can provide photos and/or measurements, as needed. Noel

5 years, 1 month

DOS/Batch 10 source disks

by aek＠bitsavers.org

Did someone on the list buy the pair of source RK05's on eBay? https://www.ebay.com/itm/PDP-11-Program-Monitor-V10-02-CUSP-and-Device-Driv… I bought the fortran source disk that was listed at the same time, but didn't go after these because of the cost and I may already have it in the archived DECtapes on bitsavers.

5 years, 1 month

Electronics Plus

by jwest＠classiccmp.org

In case this link only made it to discord, I'm (re-?)posting here. Cindy has been extremely helpful and generous and giving of her time to all in this hobby. It is a very worthy cause. https://www.gofundme.com/f/electronics-plus Not too much more to hit their goal. Lets see if we can put them over, I'm pretty sure most of us have benefited from her efforts. Cindy, a few things have changed on my end with retirement, but I may be able to get that website back online for you. Please reach out to me directly and I'll check. Best, J

5 years, 1 month

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