- test-drb@ccmp.vtda.org - classiccmp.org

An NTSC Atari looks good on a PAL TV. How come?

by terry＠webweavers.co.nz

Thanks for those replies guys. It was as I suspected. Terry (Tez)

7 years, 12 months

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AT&T 3B2 stuff--Calling Seth

by sales＠elecplus.com

Was Seth the person looking for this stuff? I finally found it! I sent him an email, but it might not be a current address. Seth, if you still want this stuff, please let me know! Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com AOL IM elcpls --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

7 years, 12 months

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An NTSC Atari looks good on a PAL TV. How come?

by terry＠webweavers.co.nz

Hi, The PAL vrs NTSC TV standard complicated things when collecting home computers from other countries. In New Zealand we are on PAL. PAL Atari 800s are rarer in the world that NTSC ones. That being the case I recently settled on an NTSC one for my collection. Hooking it up to a couple of my PAL TVs (via composite video) I was surprised to see a reasonable colour image. I then dropped in a UAV video enhancement board and was surprised to see a very good colour image! I'm assuming it's because composite input into "relatively" modern can handle NTSC and PAL? Is this a reasonable thought? The UAV is not an NTSC converter, and even the inventor was surprised this worked. Those interested can read about the adventure here: https://www.classic-computers.org.nz/blog/2018-03-06-Converting%20-NTSC-Ata… Terry (Tez)

7 years, 12 months

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AT&T 3B2 stuff--Calling Seth

by jnc＠mercury.lcs.mit.edu

> From: Cindy Croxton > I finally found it! Oh, that is so awesome! Thank you for keeping an eye out! (I'm sure somehow it will get saved - Seth, let us know if you do, otherwise we can organize something.) Noel

7 years, 12 months

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M837 (KM8-E Memory Extension and Time-Share) available

by jnc＠mercury.lcs.mit.edu

So I have an M837 (KM8-E Memory Extension and Time-Share option for the PDP-8/E, -8/F & -8/M) available; got it with a group of other cards, and I have no use for it. Anyone want it, and have (or can acquire :-) anything PDP-11ish (boards, mounting hardware, manuals, prints, I'm not picky - although it has to be something I need/want, I'm already knee-deep in DL11's :-) to trade for it? Noel

7 years, 12 months

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NEC TK-80A Ref Manual Wanted

by billdegnan＠gmail.com

Looking for a reference manual to the NEC TK-80A trainer. Rev A. This one: http://bugbookmuseum.blogspot.com/2015/12/computer-tk-80-single-board-8080.… Thanks Bill

7 years, 12 months

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QSIC update

by jnc＠mercury.lcs.mit.edu

Hey, all, a quick update on recent progress. I now have a working prototype to match Dave's (although he's still doing all the real work), and we've made a minor improvement in them (re-wired things so we can use shorter cables to the FPGA daughter-card). I got my indicator panel working, it looks quite nice: http://ana-3.lcs.mit.edu/~jnc/tech/QSIC/jpg/DasBlinken2F.jpg http://ana-3.lcs.mit.edu/~jnc/tech/QSIC/jpg/DasBlinken2NF.jpg The inlay is an original from a TS08 that I happened to have lying around; Rod S has made us a large batch of new blanks, but silk-screening of the captions on the front of those is yet to happen. The bezel is also an original. (I have a large stock of those, so it'll be a while before we need to work out how to make new ones - probably resin casting, although 3D printing will be an option too.) However, the guts are all new, and as you can see, the result looks just like the real originals. Dave has also worked out how to connect up the RKV12 (our name for the 22-bit RK controller, by analogy with the RLV11/RLV12) to the internal 'block' RAM in the FPGA, and then did the stuff to connect it to both the uSD card and the internal RAM at the same time, with one drive connected to the RAM, so things like swapping, etc don't 'waste' uSD writes. Both of these are working quite reliably; the exciser/tester runs until we get tired of the noise, and turn the machines off! :-) His current project is to work out how to talk to the larger external RAM on the FPGA daughter-board (the internal RAM isn't large enough for even a single complete RK pack). I'm so looking forward to putting swapping, /tmp, pipes, etc all on different platters, so as the system (Unix V6, natch :-) runs I can watch the lights and see _exactly_ what's going on! After that: turning the RK into an 'RPV12' (which should be pretty easy, the RK11 and RP11 are very similar), and adding a mux so that the two controllers can share the storage devices, etc. Those should both be done soon after the external RAM (and maybe before, if Dave needs a break from that :-). We also intend to do an 'extended RP11' (name not yet chosen, although I like 'RPV-12D - DEC's last was the RP11-C), which extends all the disk address fields in the register to use the unused bits, giving us pretty massive storage capability. With 16 bits of cylinder (up 7), 8 bits of surface (up 3), 4 bits of sector, that gives 28 bits of block number per drive; and with 8 drives per extended RP11, that's a total of 31 bits of block number per controller. Convert the blocks to bytes, that's 9 bits more, so 2^40 bytes per extended RP11, or 1TB! Very shortly now we'll need to turn to starting on the design of the 'production' hardware. Noel

7 years, 12 months

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Membrain Software

by robert.jarratt＠ntlworld.com

In doing some research on the operating system for MU5, MUSS, I have been told that a UK company called Membrain may have acquired it at some point in the late 70's. Membrain were based in the South of England and made Automatic Test Equipment. Does anyone have any information on Membrain? Any software artefacts? Source code even? I have had a look on BitSavers and Membrain does not feature at all. Thanks Rob

7 years, 12 months

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Some fun: who can identify this ?

by pete＠petelancashire.com

https://photos.app.goo.gl/ww7KPnPVexGJiqyE3

7 years, 12 months

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Someone had asked me about they were looking for Claude Shannon Bell Labs publications for a display? Please email me off list Thanks Ed Sharpe archivist for SMECC

by couryhouse＠aol.com

Someone had ?asked me ?about ?they were looking ?for Claude Shannon Bell ?Labs ? ?publications ?for a ?display? Please email me ?off?list Thanks ?Ed Sharpe archivist? for SMECC

7 years, 12 months

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EF50 was Re: radar history

by jnc＠mercury.lcs.mit.edu

> From: William Donzelli > Germany often gets the short end of the stick when it come to radar > tech in World War 2 For those who are interested in German radar, there's a good book: David Pritchard, "The Radar War: Germany's Pioneering Achievement 1904-45", 1989 which covers their systems in some detail. There's also: Martin Streetly, "Confound and Destroy: 100 Group and the Bomber Support Campaign", 1978 which contains a very interesting chapter about an exercise called "Post Mortem", run immediately after the close of hostilities, from 25 June to 7 July, 1945, in which the Allies observed (from inside) the workings of the German air warning network, including things like how well it coped with various kind of jamming (window, as well as active). Noel

7 years, 12 months

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radar history

by jnc＠mercury.lcs.mit.edu

> From: Chuck Guzis > the magnetron was made out to be a super-secret device, yet there's a > clear explanation of it in my 1942 "Radio Handbook". Ordinary magnetrons had indeed been around for a while; they were invented in 1920. The British invention was the _cavity magnetron_, a quite different beast; it was kind of a cross between a magnetron and a klystron, with the best features of each. Buderi (which is indeed an excellent history, perhaps the best in the radar section of my library) has a good explanation of how it works. Noel

7 years, 12 months

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Heathkit card cage with DEC cards available

by useddec＠gmail.com

I recently found a Heathkit card cage ( 85-2001 121476 on backplane ) with a DEC M7270, M8044, M7946, and M8043. I still have a few Heathkit boards buried here sonewhere. Please contact me off list if you have any questions or wish to make an offer. Thanks, Paul

7 years, 12 months

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FTGH: Pair of unknown extender cards

by jnc＠mercury.lcs.mit.edu

> From: Fritz Mueller > Spring cleaning, Noel? :-) Yeah, sort of! These came with a bunch of PDP-11 boards I bought on eBay, and they're just clutter. More stuff coming soon! Noel

7 years, 12 months

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FTGH: Pair of unknown extender cards

by jnc＠mercury.lcs.mit.edu

OK, another pair of unknown extender cards: http://ana-3.lcs.mit.edu/~jnc/tech/jpg/tmp/LargeExtender.jpg If anyone has a use for one or both, FTGH. They are 17"x10", and the support arms (nice touch) are about 3" long. No identifying marks that I can perceive, alas. The power leads are titled "+5", "+12 Handler", +12 Return", "+12 Scan", "+15", "+- 15 Return", "-15". Noel

7 years, 12 months

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FTGH: Unknown extender card

by jnc＠mercury.lcs.mit.edu

Hi, I'm not sure what kind of system this extender card: http://ana-3.lcs.mit.edu/~jnc/tech/jpg/tmp/SmallExtender.jpg is for, but if anyone has a use for it, FTGH. It has 2x43=86 contacts. Noel

7 years, 12 months

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FTGH: Unknown extender card

by jnc＠mercury.lcs.mit.edu

> From: Brian Marstella > I have a CPU board with similar format that I bought thinking I'd > eventually figure it out. A couple of people have replied privately telling me it's for a Motorola EXORbus/EXORciser. Noel

7 years, 12 months

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FTGH: Unknown extender card

by jnc＠mercury.lcs.mit.edu

> From: Bob Smith > reminds me of S100 bus That was my first thought, until I counted the pins... Noel

7 years, 12 months

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RX01/RX8/RX11 user's manual for trade

by jnc＠mercury.lcs.mit.edu

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 have, preferably). Anyone? Noel

7 years, 12 months

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radar history

by jnc＠mercury.lcs.mit.edu

> From: Jon Elson > if they did air raids over France or Germany, that eventually a plane > with one would get shot down and a magnetron would be obtained in > relatively good shape. So, likely by 1942 it was considered to no > longer be a secret. One was lost near Rotterdam in a raid on Cologne on February 2, 1943 (only the second raid of the war using centimetric H2S radar which used the cavity magnetron), and the remains were discovered in relatively good shape by German technicians. The Germans worked out what it did pretty quickly, and by the fall of 1943 they had started to deploy microwave detector systems. Noel

7 years, 12 months

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C&K paddle switches on sale

by anders.k.nelson＠gmail.com

In case anyone is making a scaled-down front switch panel: http://www.goldmine-elec-products.com/prodinfo.asp?number=G22319 =] -- Anders Nelson +1 (517) 775-6129 www.erogear.com

7 years, 12 months

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Suggestions for 16 mm movies to digital conversion

by jfoust＠threedee.com

GoMemorable got back to me. They'll still scan for me to QT ProRes on hard drive for 20 cents a foot for 8mm/Super 8 and 30 cents a foot for 16mm. - John

7 years, 12 months

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Polymorphic 8813 Bezel

by ben＠bensinclair.com

While cleaning just now I found one of the metal and black plastic side bezels for an 8813. If anyone needs one, let me know and I can send it to you! -- Ben Sinclair ben at bensinclair.com

8 years

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Old Classiccmp archive

by wh.sudbrink＠verizon.net

Does anyone have an archive of classiccmp that goes back to the 90's? If so, could I ask you to "hunt down" an old message of mine? I once wrote a "reminiscence" of connecting to the ARPANET when I was a kid that I was rather pleased with. Unfortunately, I seem to have lost it in a disk crash (actually a couple of disks, primaries and backups). Thanks, Bill Sudbrink --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

8 years

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IBM System/36 manuals available

by web＠loomcom.com

Folks, I know someone in North Carolina (not on this list) who just found a small pile of IBM System/36 manuals in three ring binders. These are all already on Bitsavers, and these manuals are in pretty rough shape, but if anyone really really wants them, let me know and I'll pass on your contact information 5360 Vol A1 MIMS "Maintenance Information Manual - General Safety Guide (etc.)" 5360 Vol A2 MIMS "Maintenance Information Manual - CPU & Channel (etc.)" 5360 Vol A3 MIMS "Maintenance Information Manual - Work: Station (etc.)" 5360 Vol B2 MAPS "Maintenance Analysis Procedures" 5360 Vol C1 FLDS "Field Logic Diagram" -Seth -- Seth Morabito web at loomcom.com

8 years

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PDP11 I/O page memory map

by jnc＠mercury.lcs.mit.edu

> From: Jerry Weiss > Typically execution of the RESET instruction in a user program is > treated as a NOP Yeah, that's not documented in most PDP-11 CPU manuals, either. It's one of the things that makes the PDP-11 impossible to virtualize; only HALT and SPL trap, IIRC. M[TF]P[ID] doesn't, I think, and neither does WAIT or RT[IT], IIRC. Noel

8 years

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Bug-for-bug compatibility [was RE: SimH DECtape vs. Tops-10 [was RE: Writing emulators [Was: Re: VCF PNW 2018: Pictures!]]]

by RichA＠livingcomputers.org

From: Paul Koning Sent: Monday, February 26, 2018 12:19 PM >> On Feb 26, 2018, at 12:06 PM, Doug Ingraham via cctalk >> <cctalk at classiccmp.org>> wrote: >> The purpose of an emulator is to accurately pretend to be the original >> hardware. It doesn't matter that the original OS runs on a particular >> emulator. If a program can be written that runs on the original hardware >> but fails on the emulator then there is a flaw in that emulator. > That's true. But it is unfortunately also true that creating a bug for bug > accurate model of an existing machine is extremely hard. This is true even in real hardware (or "real" hardware, if you prefer), whether bug-for-bug or simply correct results for corner cases. The XKL Toad-1 System was designed to be a superset clone of the KL-10 based DECSYSTEM-2065 from Digital Equipment Corporation. It implements the full 30-bit extended addressing introduced with TOPS-20 v4, of which the KL-10 provided a 23-bit subset, and provides native support for 10Mbit Ethernet and FASTWIDE differential SCSI2 (both state of the art in 1991 when the design was frozen). As a better DEC-20, the Toad-1 was a success. (We will leave aside the issue of its market failure, which is irrelevant to the story.) Fast forward 20 years, to Living Computer Museum, where a KI-10 based DEC-1070 was undergoing restoration. Diagnostics were needed, so the resident TOPS-20 programmer laid hands on the MAINDEC sources for the KI-10 and proceeded to compile them all and generate paper tapes of the results. All went smashingly well until the multiplication test. The diagnostic source for this test uses a macro to build a set of test values for X**2 where X is a power of 2. Internally, Macro-20 uses the IMULM instruction to build the results. In the KA-10 manual, IMULx of 2**35 * 2**35 is supposed to store the high order part of the result into the 36 bit word addressed by the instruction, and set the overflow bit. On the Toad-1 (and on the Toad-2 prior to our discovery of this bug), a zero is stored instead. Since we compiled the KI-10 diagnostics on the Toad-1, this incorrect result was placed on the diagnostic paper tape, and the KI-10 seemed to fail the diagnostic. Imagine our chagrin when days of trying to correct the problem led to the conclusion that the diagnostic was incorrect. Rich Rich Alderson Vintage Computing Sr. Systems Engineer Living Computers: Museum + Labs 2245 1st Avenue S Seattle, WA 98134 mailto:RichA at LivingComputers.org http://www.LivingComputers.org/

8 years

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PDP11 I/O page memory map

by jnc＠mercury.lcs.mit.edu

> From: Paul Koning > RTI/RTT are used in the debugger, so they need to work in user mode. > They refuse to raise your privilege level, though. I understand that it has uses, but by specifying the 'failure' mode in User mode (when the contents of the current or previous modes is not User) to be 'ignore', rather than 'trap', that's one more thing that makes the PDP-11 non-virtualizable. (This choice, to ignore, instead of trap, has the same issue in other places where it's done that way, e.g. RESET.) Noel

8 years

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Is livingcomputers.org down?

by kylevowen＠gmail.com

I'm not able to load Living Computer's website. Anyone else? Kyle

8 years

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HP 1000 system in Europe

by gerardcjat＠free.fr

NICE system !! I would have love it but hadn't room for it .... too sad :-(( Where did in goes ??? ( Which country, in Europ, I think ? ) Gerard

8 years

2
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PDP11 I/O page memory map

by jnc＠mercury.lcs.mit.edu

> From: Charles Dickman > So if the I/O page is completely (all processor modes) unmapped is > there any way to recover besides a power cycle? Does the RESET > instruction disable the MMU? Interesting questions! The CPU manuals don't say, about the RE$ET; I just tried it on the /23 I happen to have next to my desktop, and yes, the RESET instruction does clear bit 0 of SSR0. Noel

8 years

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VCF East keynotes -- holy moly!

by cctalk＠snarc.net

There will be three awesome keynotes for VCF East this spring. - Friday: our own Bill Dromgoole who'll talk about restoring the VCFed UNIVAC mainframe. - Saturday: Don Eyles (NASA contractor who hacked the Apollo Guidance Computer to save the Apollo 14 mission) - Sunday: Dave Walden, who programmed the IMP at BBN for the ARPANET

8 years

1
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PDP11 I/O page memory map

by dj.taylor4＠comcast.net

Is there a document that describes the bank 7 memory page and what addresses are reserved for what?? I think I've seen this before but can't seem to put my hands on it. Another question, bootstrap is reserved for 173000, how many words are allowed there for this?? How do the more complicated bootstraps, e.g. microPDP11-53, accommodate this limitation? Doug

8 years

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OT: Any tech apprenticeship opportunities in Brisbane, QLD?

by sellam.ismail＠gmail.com

Hello Folks. Forgive me for the intrusion. I know a good soul in Brisbane area in Queensland, Australia who is looking for some sort of apprenticeship in electronics or communications/networking. I thought I would ask here in case this message reaches some of you blokes down there that might be able to point him in a useful direction. He's in his 30s, very sharp and capable, gainfully employed in an entirely unrelated field and looking for a change in his life. Offline responses welcomed. Thanks! Sellam

8 years

1
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Vtserver 32MB limit

by bob＠theadamsons.co.uk

>From Dennis Boone > Jonathan Engdahl's homepage shows his email > address. His changes are explained at the page you linked. Yes indeed - as I (meant to have) said, no reply to his email listed there. > The 32MB limit arises due to the use of 16 bit block number fields in > the protocol. I understand the issue but alas I'm a mere hardware guy with minimal software skills so I was looking for a giant to carry me ;). > if it's useful, you can find it here: > http://yagi.h-net.msu.edu/vtserver.drb.tar Perfect - minor mod for my raspberry pi and it works just fine thanks. Bob

8 years

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PDP11 I/O page memory map

by jnc＠mercury.lcs.mit.edu

> From: Douglas Taylor > Is there a document that describes the bank 7 memory page and what > addresses are reserved for what? Here's one I collated from a large number of DEC manuals: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/UNIBUS_Registers.txt (Ignore the name, it applies to QBUS machines too.) > bootstrap is reserved for 173000, how many words are allowed there for > this? Well, the space from 773000-773776 (UNIBUS and Q18 - add '17' to the front for Q22) is used for ROMs, and is the most common; 173000 is of course the location QBUS processors can be configured to jump to on power on. 765000-776 in also used for some (e.g. M9301's). > How do the more complicated bootstraps, e.g. microPDP11-53, accommodate > this limitation? Bank switching; e.g. the BDV11, KDF11-B have a 'page control register' at 777520 which says which block of ROM is mapped into the 773000 block. Interestingly, the DEC standard ROMs for the BDV11 and KDF11-B _don't_ copy all the contents down to real memory, and run from there - the code is divided into 'pages', only one of which is mapped in at a time, and it's executed from the ROM. Noel

8 years

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PDP11 I/O page memory map

by jnc＠mercury.lcs.mit.edu

> On many of the PDP-11s that page is signified by asserting BBS7 QBUS machines only; the UNIBUS has no equivalent signal. > FYI the microPDP-11/53 is the 11/23+ cpu card Err, no; according to the "MicroPDP11/53 System Supplement Manual" (AZ-GPTAA-MC), pg. 3-1, the CPU card in the /53 is the KDJ11-D. The /23+ uses the KDF11-B CPU card. Noel

8 years

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Suggestions for 16 mm movies to digital conversion

by jfoust＠threedee.com

At 01:09 PM 2/24/2018, Pete Lancashire via cctalk wrote: >I have a small, 5-20 stack of 16 mm's of movies dealing with computers >The one in front of me is >"Once Upon a Punched Card" >I am looking for a place in the USA with a reasonable price to have them >digitized and I will place them on both my Google drive and a Youtube >So far I have only been able to find places I can not afford. I use https://gomemorable.com/ . I've used them for both 8mm and 16mm. They have sales now and then that'll drop 40% off the price. They're running one now until March 3. They scan digitally with LED illumination, frame by frame. It'll brighten your old film in ways you can't imagine. They'll scan to HD (1920x1080) resolution. I send them a hard drive and they return the files as Quicktime ProRes movie files. These days, send 'em a bare SATA SSD to save on shipping. If you didn't want to edit yourself, they can send you a DVD or far better yet a Blu-ray. As I look at their web site now, I don't see a link that gets me to these services I describe, that I've used as recently as a month or two ago. I'll write them a note to see where the straight-forward per-foot pricing and hard drive options went. For 8mm, many old cameras would actually expose more of the width of the film than you'd ever see on your projector, so I have them scan the full frame. Here's an example of a color home movie from the 1940s that I had converted to VHS in the early 90s via telecine, compared to a modern digital scan: https://www.youtube.com/watch?v=f08K0Co3l5s - John

8 years

1
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More pictures of the 360/50 front panel

by pete＠petelancashire.com

https://photos.app.goo.gl/36CxlZQJDssj5uLh1 I will be pulling it out later this week and have more including the back and the hinged frame -pete

8 years

1
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Vtserver 32MB limit

by bob＠theadamsons.co.uk

I've been using vtserver to transfer an OS to a minimal pdp11 (only a HD and console port so far). Works fine but it has a well-documented 32MB file limit. This website http://home.windstream.net/engdahl/vtserver.htm mentions some hacks but I've been unable to contact the author. Anyone have details of either the code or author? Thanks Bob Sent from my iPad

8 years

2
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A CD-ROM that is compatible with the 16700A LA!

by mechanic_2＠charter.net

Hello all, . . . . For those of you who having not been following my trials and tribulations with a 16700A in another topic here is a partial update. I received this LA from a benefactor who has stepped forward. A real big thanks to him. I have run into that incompatibility problem with External CD-ROM Drives. . . . . I am disabled and partially housebound. I am living on SSD so money is very tight for me. I am looking for a CD-ROM Drive for little or nothing that is compatible with the 16700A I have an NEC 3x Drive that uses the CD Carriers. Remember those. I have installed this and a Maxtor 245MB SCSI drive in an External SCSI box. The Termination on the CD-ROM Drive is turned off and I removed the Termination resistors on the HDD. I have a Terminator installed on the end of the SCSI bus on the External Case. Could someone please help me out? Any and all help is greatly appreciated. GOD Bless and Thanks, rich! --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

8 years

3
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Anyone have any info on the NEC D2167D-2?

by ethan.dicks＠gmail.com

Hi, all, I'm going through a box of random ICs and one particular item is not showing up on my searches outside of a couple eBay auctions for chip collectors. The IC is a 20-pin ceramic body with side brazed legs, gold pins, chromed lid, with NEC D2168D on it with "-2" painted on the ceramic and date codes >from 1984. It's almost certainly a RAM chip of some kind, but I'm not finding any pinouts or data sheets. Anyone recognize this? Anyone know a system that uses them? I have more than 10, and since I haven't run across them before, I probably don't have a machine that needs them. Thanks for any tips. -ethan

8 years

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ARPANET Reaches the Royal Signals and Radar Establishment (RSRE, Malvern)

by pbirkel＠gmail.com

The following extract comes from a History of Programming Languages (HOPL) retrospective on the development of the Ada programming language written by the individual who was the government lead at DARPA for much of the time of its development (Colonel William A. Whitaker). I found it humorous. Perhaps you will too. ----- The ARPANET connection was inaugurated during a visit to RSRE by Her Royal Highness Queen Elizabeth II. Her Majesty sent a message of greetings to the members of the HOLWG from her net account, EIIR, by pressing a red velvet Royal carriage return. Because the address list was long, it took about 45 seconds for the confirmation to come back, 45 seconds of dead air. Prince Philip remarked, joking respectfully, that it looked like she broke it. ----- I suspect that we've "all been there" at one time or another! paul

8 years

2
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What is vintage (was: Why don't you respect the mail threads?!)

by billdegnan＠gmail.com

What is vintage computing? I think it's the IBM PC. Anything else is not vintage computing. b On Thu, Feb 22, 2018 at 3:36 PM, Evan Koblentz via cctalk < cctalk at classiccmp.org> wrote: > It's gone meta: people threadjacking a thread about threadjacking. Now > it's some posters trying to show others who is smartest about arcane > details of obsolete email software. >

8 years

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SimH DECtape vs. Tops-10 [was RE: Writing emulators [Was: Re: VCF PNW 2018: Pictures!]]

by RichA＠livingcomputers.org

From: Paul Koning Sent: Wednesday, February 21, 2018 6:41 AM > And while there is roughly-accurate simulation of DECtape in SIMH (presumably > for TOPS-10 overlapped seek to work?) It's not for Tops-10. SimH only provides the KS-10 processor[1], so DECtape is not a possible peripheral. Rich [1] Although there is a KA-10 in the works.

8 years

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Why don't you respect the mail threads?!

by jnc＠mercury.lcs.mit.edu

> From: Grant Taylor > I'm on a list where it seems as if a frequent contributer uses an MUA > that does not send In-Reply-To or References headers at all. It doesn't > even send a User-Agent header. *sigh* That's me, I expect. I used to use a TOPS-20 email reader called MM, and when I moved my email to a Unix machine, there was a version of MM I used there, then something happened (I forget what) and I couldn't use that any more. I do have access to a more modern email reader (Eudora), but don't like it; I just stick with old, simple stuff I know how to use. I don't have the spare brain cells / energy to switch. After going through I've-forgotten-how-many editors (starting with TECO, then 'ed'), text formatting systems, operating systems, email readers, etc, etc I have a _very_ simple rule about switching software: is the old stuff I'm using utterly, irretrievably unusable? If not, ignore the new stuff. Eventually it'll be obsolete too. And in the meantime, I'll have saved countless cycles by not going through the hassle of switching to it. Life's too short. Noel

8 years

6
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DEC Pro 350

by kurt＠hamm.me

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 sell/give me some systems disks for the unit and I could try to setup the drive again if it still functioned. Then, it after a couple of restarts (I re-seated the boards and cleaned the connectors) it stopped showing the error screen (with picture of the computer). All the diagnostic lights are red on the back and nothing ever shows on the screen. The power comes on and then nothing. If anyone has any thoughts, I would appreciate it. I knew the history of this type of computer and figured it was a long shot. I am just disappointed to have gotten really nowhere with it. Thanks! Kurt

8 years

4
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DEC Pro 350

by jnc＠mercury.lcs.mit.edu

> From: Kurt Hamm > If anyone has any thoughts, I would appreciate it. You probably already know this, but... My sense is that a collector of classic computers has to be able to diagnose and repair at the component level - get in there with an oscilloscope and a set of prints (creating the latter, if need be), and find the busted chip/transistor. It's like collecting old cars - if you collect old cars, you have to be able to work on them (or like Jay Leno, be rich and hire someone else who can - although given that Jay worked at an auto dealer 'back in the day', he apparently does know a fair amount). Which isn't going to help much with this particular problem, maybe some of the other replies will help. Noel

8 years

1
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Honeywell DDP-516 console on Ebay - PLEASE don't bid!

by hachti＠hachti.de

Hi folks, I recently discovered a complete Honeywell DDP-516 console on Ebay. It is a charity auction, ending tomorrow. I am the high bidder (hachti, 600-some points) and BEG YOU ALL NOT TO BID on it! I already entered a crazy high bid anyway bid so please don't bid on it. I am one of the very very very few people who have an actual DDP-516 machine and can really use this as a spare for a real machine. Again, PLEASE refrain from bidding up this item! If you are the owner of a "headless" machine who is in need for the front panel: please contact me, so we can avoid an explosion on Ebay. Thank you very much. Kind regards Philipp

8 years

6
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IBM Rigid Cleaning Tool 2200574

by aek＠bitsavers.org

https://www.ebay.com/itm/232678490872 anyone run across a volume source for these? They appear to be IBM's version of the Texsleeve

8 years

4
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looking for a mother board for a hp 3000-37

by g-wright＠att.net

Anyone have such a piece or know someone that might. Board number is 30457-60001 Might take the whole thing if the price is right. Thanks, Jerry

8 years

2
1
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ISO: Tektronix 4404 peripherals

by derschjo＠gmail.com

Hi all -- I'm working on fixing up a Tektronix 4404 workstation (runs Smalltalk-80!).? Or rather, I'm trying to collect the needed parts to assemble a complete system so that I might fix up said system -- at the moment I have only the main CPU unit (but hey, it's a good starting point).? I am looking for: - Keyboard (Tektronix P/N 119-1872-00) - Mouse (Logitech P7-3F-TX-19-1808-00).? This is likely a standard 3-button quadrature mouse but if I can find the exact match, so much the better... - Mass Storage (Tektronix model 4944, possibly others?? This is a SCSI device containing a hard drive on a SCSI->MFM bridge and 5.25" floppy drive on a custom SCSI->floppy interface.) If anyone happens to have spares or knows anyone who might, please let me know.? Thanks as always! - Josh

8 years

2
1
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ibm panel

by ed＠groenenberg.net

So, all this talk about panels made me making an oak frame for an IBM panel I had lingering around in the attic for a while. Still need to make a back panel to close it tough. http://bit.ly/2HI2cHC The cables were already cut when I got it. Ed -- Ik email, dus ik besta.

8 years

3
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Searching for Sun2 and Sun3 bits and bobs- a long-running project approaches completion!

by ian.finder＠gmail.com

Hi folks, I recently, on a trip to Oregon, finally got a compatible ECL monitor for my Sun 2. It came with a rather nice Sun 3/260, which I?d like to run as well. So I thought I?d put out a beg here- I?m so close to finishing this. I need to shake loose a keyboard and mouse for a Sun 2. Would anyone be willing to sell me one? I?m not expecting a handout; they would be paid for and well loved. On a related note, I?d love to run the 3/260 as well: What I?d like to do for that is hunt down a Sun color framebuffer for it so I can use a more common display. (and of course, enjoy the wonders of color). I?m not sure what the options there are, but I have a nice scan converter so just about any compatible color framebuffer will do. I can then totally repurpose the monitor I?ve just found for my 2/120. So, in the words of another immortal list member, ?advice hints ????? Thanks in advance, - I

8 years

4
4
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Suggestions for 16 mm movies to digital conversion

by pete＠petelancashire.com

I have a small, 5-20 stack of 16 mm's of movies dealing with computers The one in front of me is "Once Upon a Punched Card" I am looking for a place in the USA with a reasonable price to have them digitized and I will place them on both my Google drive and a Youtube So far I have only been able to find places I can not afford. Suggestions, Ideas, etc ? -pete

8 years

5
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WTB Intel 7110 Bubble Memory Subsystem or Chipset

by nf6x＠nf6x.net

I'm about to acquire a couple of 1980s-vintage military surplus AN/UGC-137A terminals (i.e., glass TTYs with some local message preparation and storage capabilities) which have a bubble memory subsystem. They use plug-in cartridges containing 256 kbytes of storage in the form of two Intel 7110 1 Mbit bubble memory chips and their 7242 formatter/sense amplifiers. One of the cartridges contains the one and only copy of the terminals' firmware, which I believe they need to load up at each reboot. Naturally, extracting the contents of that irreplaceable cartridge for archival, and potential future emulation, is going to be a very high priority for me. I have a few different approaches in mind for accomplishing that. One approach would be to remove the two memory devices from the critical cartridge in order to dump their contents in an independent bubble memory subsystem. With that in mind, I'd like to get my hands on a working Intel 7110 bubble memory subsystem, or the parts to build one myself (i.e., a complete 7110/7220/7230/7242/7250/7254 chipset that I could make a board around). Might anybody here have what I need available for sale or trade? I might be able to use some arbitrary old computer or other device that has a subsystem based around the Intel 7110, or a development kit such as the Intel BPK-72, or a chipset to make my own board. If I can't acquire or make the hardware to dump the memory chips outside of their native system, then I think my next option would be to passively snoop the host bus interface of the Intel 7220 controller I expect to find inside the terminals as they perform their initial firmware load, so that I can reconstruct the cartridge contents from the trace data. The terminals were made by the Librascope division of Singer, and brochures can be found here: http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi… http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi… http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi… I already have the critical cartridge in hand, and I posted some pictures of it on Twitter: https://twitter.com/nf6x/status/964578291767173120 -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

8 years

7
18
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Canon BX-1 (1977) Manuals

by osi.superboard＠gmail.com

Recently, I?ve started working on a Canon BX-1 machine dated 1977. It was CANON's first standalone business / home computer featuring I guess the Motorola MC6809 CPU, one line of gas plasma display a thermal printer and 125k floppy drive. See pictures here: https://drive.google.com/open?id=1rT4qwtiR68AN5DRqoCwjxGDJvRRdlHha In working condition but without manuals or disks. Only little can be found for this machine, its not listed in http://www.bitsavers.org/pdf/ nor https://amaus.net/static/S100/ Also http://archive.computerhistory.org/ isn't mentioning the machine. So I would be happy, if anyone can help in disk images or manual scans (manual front pages are shown in the picture link above) regards Thomas Known CANON BX-1 Disk/Documents Disks: MCX OPERATING SYS. STANDARD BASIC AND BOOT MCX SYSTEM DISK MCX EXTEND BASIC BOOT. PROGRAM, GL SYSTEM, TM_P CALC, FORCE FORM Manuals: CANON BX-1 INSTRUCTIONS CANON THE INSTRUCTION TO THE BX-1 CANON EASY PROGRAMMING PART I CANON EASY PROGRAMMING PART II CANON OPERATION MANAUL AND EXPLANATION OF INSTRUCTIONS

8 years

2
1
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damn ....

by pete＠petelancashire.com

https://photos.app.goo.gl/EfDc3rRMfyfTNdgw2 >From my days at Burroughs writing hardware test programs 96 col cards were the standard on the later 1700's I had full access from midnight to 7AM but the shop was window only until the next night. Turn around time during the day could be as much as 4 hours. -pete

8 years

4
4
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Will be up for sale in this calendar year 360 Front Panel

by pete＠petelancashire.com

I thought I would post a heads for https://photos.app.goo.gl/36CxlZQJDssj5uLh1 I have the IBM 360 aluminum plate that goes on top, it is scratched. More detailed and better pictures as I dig deeper. For shipping a I will have professional box built by a friend who's hobby is building and restoring furniture. Price to be determined and will go into my estate. If interested please email me directly pete at petelancashire dot com Regards -pete

8 years

4
4
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Alpine vs mutt?

by geneb＠deltasoft.com

> Before that, I have been using pine (nowadays named alpine), which had > configuration edited via builtin options editor and before that, elm, > never configured by me (AFAIR - about 20yago). So, with this > perspective, I can say mutt is not bad and I intend sticking to it for > a while. What about mutt do you prefer over alpine? g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://scarlet.deltasoft.com - Get it _today_!

8 years

3
3
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Maxtor full-height 5.25" drives of death

by ian.finder＠gmail.com

XT2190s, XT1140s, some of the early ESDI disks... I have 6 XT2190s at home, and maybe one of the damn things works. Does anyone out here know, beyond speculation, what some of the common failure modes of these drives are? I'm not opposed to open-HDA surgery. And I probably won't do anything. But the question of WHY this line of drives in particular sucks so much has haunted me for some time... - Ian Honorable mention: CDC Sabre, Wren. -- Ian Finder (206) 395-MIPS ian.finder at gmail.com

8 years

16
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Panasonic Electronic Filing System - document scanner storage on MO disks

by david4602＠gmail.com

Hello, all - Has anyone run across the subject system - a mid-90s Motorola '030-based document scanner/retrieval system? KV-F520 seems to be a model of the unit, along with LF-7300A or LF-7304 5-1/4" MO drives. I have a hold of some media that I can read, and can see the moral equivalent of files in Panasonic's own format - I suspect it's thinly veiled TIFF or maybe a capture format of their own making. Has anyone else run across this before? - David

8 years

1
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VCF PNW 2018: Pictures!

by mbbrutman＠brutman.com

For your viewing pleasure ... https://photos.app.goo.gl/QPfZ4WXPdIdUo5gn2 -Mike

8 years

40
97
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What are these memory modules?

by mattislind＠gmail.com

Can anyone tell me which system these belongs to? https://scontent-arn2-1.xx.fbcdn.net/v/t1.0-9/28058349_10155950589854985_86… /Mattis

8 years

1
0
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Seeking RL02K cartridge

by jnc＠mercury.lcs.mit.edu

> From: Aaron Jackson > I am wondering if anyone would be willing to sell me an RL02K cartridge > for a sensible price? There are a bunch listed on eBait for not wholly unrealistic prices; I wouldn't buy a bunch there, but it you only need one, for testing... Not sure if any of the ones for sale there are the moment are in the UK, though. (I recall some a few months ago, so it's not impossible, and worth a check.) Noel

8 years

2
1
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VCF PNW 2018: Pictures!

by jnc＠mercury.lcs.mit.edu

> From: geneb > they've got a DPS-8 maintenance/operator/? panel ... It's fully > operational and is connected via some magic hardware to a Raspberry Pi > running a Multics emulator. Technically it's an H6180; the DPS-8 is a later generation of hardware in the same family. More here: http://www.chiappa.net/~jnc/tech/multics/MulticsPanels.html Alas, as can be seen there, the DPS-8's don't have those wonderful panels with a zillion lights and switches; just boring modern machines! :-) Noel

8 years

3
2
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qd32 trouble

by jacob.ritorto＠gmail.com

Hi all, Would anyone here be able to help me troubleshoot my qd32 controller? I have a pdp11/73 that's mostly working, boots 2.11bsd from rl02 okay, but I need my big disk to work so I can load the rest of the distro. I've been following the manual for the qd32 to enter the geometry of my real working Fuji m2333 (jumpered correctly according to the manuals), but when I load the special command into the qd32's SP register that's supposed to load the geometry table I entered in pdp11 memory to the qd32's novram, I get a bad status value from the qd32's SP register and it remains unresponsive when I try to store the geometry. If I go ahead and try the built-in qd32 format command, it responds similarly. When I pull in mkfs >from tape (vtserver) and try anyway, despite the failures, to run mkfs on the m2333, I get an !online error from the standalone unix mkfs. The disk does respond (the select light flashes and I can hear heads actuating), but without geometry and format, I'm obviously dead in the water. I understand that there used to exist some Emulex qd32/pdp11 diagnostics that could help the situation, but my previous attempts to find copies have come up short. Any suggestions on how to proceed? thx jake

8 years

2
1
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Seeking RL02K cartridge

by aaron＠aaronsplace.co.uk

Hi all, Inspired by CuriousMarc's recent video, I cleaned and fixed my RL02 heads. Not with an ultrasonic cleaner unfortunately, but in a warm IPA bath. It worked! Loading a crashed pack is obviously not a good idea, although I cleaned the cartridge well, and figured with bad heads and a bad pack, I might as well try it. The heads no longer crash and appear clean after loading, but the cartridge, of course, cannot be read as the first track has been destroyed from the initial crash. I think the crash was cause by bad heads before I got the RL02 drive. I posted some pictures of the process here: http://aaronsplace.co.uk/blog/2018-02-19-repairing-crashed-RL02-heads.html I am wondering if anyone would be willing to sell me an RL02K cartridge for a sensible price? After the cleaning I am guessing my alignment will be slightly off, but >from what I have read in the manual, this is will probably just result in the read/write speed being reduced as the heads have to move slightly when switching between either side of the platter. Am I right in thinking this or completely wrong? Thanks, Aaron. -- Aaron Jackson PhD Student, Computer Vision Laboratory, Uni of Nottingham http://aaronsplace.co.uk

8 years

5
7
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VCF Southeast, East, West -- dates announced

by cctalk＠snarc.net

Here's some news! VCF Southeast is April 21-22, VCF East is May 18-20, and VCF West is August 4-5. Exhibit registration is OPEN for Southeast and East. For details please see www.vcfed.org.

8 years

1
0
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New home for old computing books - free on collection (UK)

by james＠attfield.co.uk

I am having a re-org of the workspace and have decided to release a number of books acquired over the last 3/4 decades but I am in a quandary as I can't store them, don't think the local Cat's Protection League can handle them and I am reluctant to consign them to the skip. While I appreciate that they may not qualify as true vintage currently they will be before too long, like PL/1 primers were years ago when folks were skipping them. I have between two to three dozen (some big) and won't impose here by listing them all but they include such nuggets as 'Secrets of Windows 2000 Server', 'MTS Programming in Visual Basic', Kernighan's 'Software Tools in Pascal', 'Understanding and Programming COM+' and 'Developing Professional Applications in Windows 95 and NT Using MFC'. I have most if not all of the accompanying CD's. I am afraid my 'Introduction to Programming using Fortran 77' and 'Lepton and Baryon Number Violation in Particle Physics, Astrophysics and Cosmology' along with my Amiga development manuals are not up for grabs (cold, dead hands, etc.) I can't expect anyone crazy enough to take the whole lot (but free for the collection if you like and welcome) but does anyone know anywhere who would take them and keep them for posterity? Just can't stand the thought of good books being destroyed. Please post here if you can help then we can take it off-list. James Attfield Proud owner of: Amiga 500 (x4), Amiga 1500 (x2), Atari 1024 (maybe), BBC Model 'B', Amiga 3000, Amiga 4000, Cromemco System One Proud builder of: Imsai 8080, North Star Horizon, Processor Technology Sol-20, Nascom-I, Nascom -II Proud past seller of all of the above plus: Cromemco, Vector Graphic, Compucolor, Ohio Scientific, Commodore (PET, VIC-20, 64), South West Technical Products KIM-1, Osborne-1, Exidy Sorcerer, ITT 2020, Dragon 32, Apricot, Comart, IBM (maybe)

8 years

1
0
0 0

Ferut computer

by db＠db.net

I just stumbled over this page this morning. Wow. Fascinating story! http://ferut.ca/my-story/ -- - db at FreeBSD.org db at db.net http://www.db.net/~db

8 years

2
1
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LMI Lambda Lispmachine Keyboard aka Space Cadet Keyboad

by mcwood＠nefkom.net

Hello, I have the keyboard for a LMI Lambda Lispmachine but I'm missing the computer itself. Is there a simulator or similar available? The keyboard is similar like here http://world.std.com/~jdostale/kbd/SpaceCadet.html. On the left side there is lable with "LMI" and a sticker "Scientific Computers Limited". Here is a picture showing the actual layout: http://www.covingtoninnovations.com/michael/blog/1402/140208-keyboard.jpg Best Regards, Marc

8 years

7
6
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Bendix G-15 [was: Re: VCF PNW 2018: Pictures!]

by jnc＠mercury.lcs.mit.edu

> From: Al Kossow >> On 2/18/18 12:20 PM, Brent Hilpert via cctalk wrote: >> ... his 709 went to the CHM. Anything else of the big stuff? > the 7094 and 650 A 7094? Neat! Very historic machine. I wonder if it would be possible to fabricate the extras needed to run CTSS on it... :-) Noel

8 years

4
5
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Control Data 841 disk drive's 3-phase power supply resurrection

by p.gebhardt＠ymail.com

Hello list, currently, I am in the process of trying to bring back to life a disk drive installation from Control Data known as "841 Multiple Disk Drive" ( MDD ). From the early '70s. It uses hydraulic disk head actuators! Pictures of the subsystem are here: http://www.digitalheritage.de/peripherals/cdc/841/841.htm I started with the power supply. Most of the electrolytic capacitors need to be reformed which is being done.? As far as I know, some computer installations used 400Hz 3-phase back in the days. Does anybody know, if that is the case for this type of drive systems? I couldn't find any indication so far, except for the input filter that supports up to 400Hz (written on it). I've quite some experience with old linear power supplies, but never worked with three-phase supplies, yet. Has anybody experience with this? Anything particular to be considered? There is an operator's manual, but there don't seem to be manuals or schematics about this type of CDC drive nor on bitsavers, neither elsewhere on the net. How could help me in pointing out where to get these? A lot of questions, I know.... :) Thanks a lot for any of your precious help, Pierre ------------------------------------------------------------------------------- Pierre's collection of classic computers moved to: http://www.digitalheritage.de

8 years

5
12
0 0

PDP-8 name plate artwork

by cramcram＠gmail.com

The VCF picture album just posted has a shot of a PDP-8e system that looks like mine. Except that all 3 of my rack toppers are southwestern red/orange with no logo as opposed to the one on the right with the DEC, PDP-8e printing. Does anyone have a scan/stencil/etc. of that panel available? Thanks, Marc

8 years

1
0
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Restoring a VT50 (VT52 actually) .

by fritzm＠fritzm.org

On 12/26/2017 5:25 AM, Mattis Lind via cctalk wrote: > Since the terminal appears to work I also dumped the firmware out of the four bipolar PROMs. > > http://storage.datormuseum.se/u/96935524/Datormusuem/VT52/124A9.HEX > http://storage.datormuseum.se/u/96935524/Datormusuem/VT52/125A9.HEX > http://storage.datormuseum.se/u/96935524/Datormusuem/VT52/126A9.HEX > http://storage.datormuseum.se/u/96935524/Datormusuem/VT52/127A9.HEX > > @Fritz: You don't need to get a dump of the PROMs in your terminal. I think the ones I have is in pretty good shape. Well, I finally got some time to play in the basement again this weekend, so I thought I'd have a go a freshening the PROM sockets on my VT52 to see if that makes it less flaky. Pulled the PROMs and gave them a read on my DATA I/O. The four I have are indeed bit-identical to the dumps posted by Mattis above, so I thought I'd note that here for completeness. cheers, --FritzM.

8 years

1
0
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Looking for info on some Olympia CP/M machines - ETX I, ETX II & EX 100

by robert626001＠gmail.com

This week, I scored four Olympia boxes - an ETX I, an ETX II and two EX 100s. Googling has not been very fruitful. I have established that the ETX II and the EX 100 are CP/M machines, SSDD 48 tpi 5.25" and DSDD 48 tpi 5.25" respectively and have seen one assertion that the ETX II is S-100 based - I won't be able to confirm that until I open it up. I found nothing on the ETX I. It doesn't seem to have a floppy drive, so may not be a CP/M box. I guess I'll have to power it on and see if it gives me a clue as to what's in the firmware. As best I can figure out, these were sold as add ons for electric typewriters. You hooked them up, with they typewriter acting as keyboard and printer and you had a word processor or computer. I think I have one interface board, that came in a box with the EX I. Does anybody know anything about these machines? It seems like a boot disk from an Osborne One would work. Most immediately, though, does anybody know which typewriters they worked with? I have an opportunity to go back to where I got them, today and it would be great if I didn't have to haul off every damn typewriter with "Olympia" on it! Thanks -- Robert

8 years

3
2
0 0

RX02 problem

by useddec＠gmail.com

Hi Bill, If you have tried new media and the problem is on both drives, I have the M7744 and M7745 boards for $75 each and will throw in the cable between them. Shipping is $10 within the US. Thanks, Paul

8 years

1
0
0 0

DEC Tape drive, controller, formater parts

by useddec＠gmail.com

Here is list of DEC tape related parts. Please contact me off list if you have any questions or wish to make any offers. One, all, or anywhere in between. Located in IL Thanks, Paul 3- M8901 3- M8901YA 6- M8901-YB 2- M8901-YC M8901-YD 2- M8902 M8902-YA 2- M8904 M8904-YA 3- M8905 M8905-YB 4- M8906 3- M8907 6- M8908 3- M8908-YA M8912 M8922 M8923 3- M8924 2- M8929 M8931 2- M8933 2- M8937 M8940 3- M8950 M8951 2- M8953 M8955 M8957 M8958 M8960 M8962 M8966 M8967 54-12262 54-12264

8 years

2
1
0 0

Vaxstation 3100 of odd sort on epay

by jwsmail＠jwsss.com

This might be a tempest or shielded vaxstation? Anyone speculate or know for sure. The vendor may have these mixed in as equivalent to their other vaxstations. If you search for "DEC vax VS42A-BN" you end up back at the vendors listing for the ones with plastic covers. I didn't turn up any info yet, not hoping to. but the thing has what appears to be optical, and a huge connector which may be shielded SCSI on the back. I can't tell from the front, but there may be a hatch to allow it to be opened and a floppy inserted, not sure from the photos. VINTAGE-RARE-DEC-DIGITAL-VAXSTATION-3100-PF-VS42A-AA-RF-VS42A-BN-COMPUTER-SYSTEM/ http://www.ebay.com/itm/370930391341 Kind of an interesting device. I looped back into the vendors listings to this auction for the plastic topped version, by the way VINTAGE-DEC-DIGITAL-VT1300-VAXSTATION-VS42A-BB-COMPUTER-SYSTEM-VT-1300-TERMINAL/ http://www.ebay.com/itm/370912245260 It is badged VT-1300 so may not be a vaxstation. And the other box may be one of the VT-1300's that is tempest or shielded. thanks Jim

8 years

6
10
0 0

ABLE Quiniverter, UNIMAP, boards, cables, user guide available

by useddec＠gmail.com

10412-0 2 plus 1 with cables and adapter board and cables 10067-0 2 10001000 has ECO's or modifications UNIMAP Users Guide 10143X07 possibly for use with 10164 and others Please contact me off list if you are interested in trading or wish to make an offer. Shipping is $10 within the for as many as you want. Please inquire about shipping outside the US. Thanks, Paul

8 years

1
0
0 0

Looking for "MacScheme"

by web＠loomcom.com

I'm trying to track down "MacScheme", an implementation of the Scheme programming language for the Macintosh (68K). It's not even all that old, but it seems to have completely vanished off the face of the earth. It was published by Lightship Software in the early 1990s. I have found several editions of the user manual that came with a trial version of the software, but of course the original disks are missing. If anyone has a copy of MacScheme, could you please contact me? I'd like to preserve this title. Willing to buy the physical media if you're willing to sell it. -Seth -- Seth Morabito web at loomcom.com

8 years

1
0
0 0

Large HP plotter on the curb in Arlington, MA

by phil＠ultimate.com

Spotted next to driveway of 7 Central St, Arlington MA Model C6075A. Attached sign says "needs new print head" https://h10057.www1.hp.com/ecomcat/hpcatalog/specs/provisioner/05/C6075A.htm is copyright 2006, so perhaps not "classic" and says: "HP Designjet 1055cm Printer" (tho 1055mm seems more likely to me) Tomorrow (13th) is trash day, current forecast is 0% chance of precipitation today and tomorrow. You'll need a van or a pickup truck, it's larger than I could drag home, and I've no place to put it.

8 years

7
11
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Anyone familiar with early television closed circuit system at used in conjunction with the SAGE System?!? Got a odd little group of USAF TV related papers etc... but some tagged SAGE.

by couryhouse＠aol.com

Anyone familiar?with early television closed circuit system at used in conjunction ?with ?the SAGE System?!? Got a ?odd ?little ?group?of ?USAF ?TV ?related papers ?etc... ?but ?some ?tagged ?SAGE... ? thanks in advance ?Ed# ?

8 years

1
0
0 0

Seeking one or two Xerox daybreak mice, preferably 3 button

by ian.finder＠gmail.com

Trying to get a leg up on a project and keep a ratio of peripherals to machines, please let me know if you have one to sell. Sent from my toaster oven.

8 years

1
0
0 0

Looking for a home

by pete＠petelancashire.com

Need to start cleaning aut, will have more/better pictures soon The Alphas have full True64 feature certificates, at least one ran before going into storage and has 2 72 GBs and at least 3 new 300 GB drives. One of the Suns is a Sun1 pre-production https://photos.app.goo.gl/c8dHa89KUaUGVn9n1 The IBM RS6000 has been spoken for -pete

8 years

3
5
0 0

FS: Various boards of all kinds from Sellam's collection

by sellam.ismail＠gmail.com

Hello Folks! I have accumulated a large assortment of random boards that I need to move along. There's a bunch of PC stuff and then a bunch of random. It's best to just view the list and see the accompanying photos and then ask me any questions you might have. The list is here: http://www.vcfed.org/forum/showthread.php?58709-New-Items-For-Sale-Check-th… For fastest response please inquire directly via e-mail to < sellam.ismail at gmail.com>. Thanks! Sellam

8 years

1
0
0 0

OS for a Paragon XP/E

by ian.finder＠gmail.com

Does anyone have leads on an operating system for such a beast? TIA, - Ian

8 years

4
3
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How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

by jnc＠mercury.lcs.mit.edu

> From: Grant Taylor cctalk at gtaylor.tnetconsulting.net > Sorry if this comes across wrong. ... I'm replying in an attempt to > provide a counter point for a discussion of reality. So please don't > take this as an attack on you, or your laudable appeal. No problem! > When I write things for my personal site, I want them first and > foremost to be on my personal site. Right, but my question is 'why are you writing them?' Is it just because you enjoy writing, or do you do it in an attempt to convey information to others? (Or perhaps some motivation I haven't guessed?) Because if it's the latter, my point is that people are more likely to find it, when they're looking for info on a topic, if it's part of something like the CHWiki, than they are on individual Web sites. Not only can it be included in an organized way (so that one can start with the home page, and hopefully click on a few links to get to the topic one's interested in), but Google et al (the _only_ way people are likely to find a writeup in a personal Web-site) are likely to show the CHWiki page on a topic fairly high in their search output. (I just tried a few samples to verify that claim, so it's not just a supposition on my part! :-) I'm not sure how their display selection algorithm works (and I gather they are always tweaking it, both in attempt to make the results more useful, but also to prevent people from gaming it), but it does seem to like sites that have a mass of content. So if you're going to put all that work into writing something up, _and_ the goal is for people to use it... > Since I'm going to write for my site first, and I'm having to make time > to do so ... I think it's more important to get things recorded > somewhere, even if it's not the ideal location, than it is to delay > getting them recorded elsewhere, if ever. I agree it's better to have stuff online in a private site, than not at all. I have done this quite a bit myself, e.g.: http://www.chiappa.net/~jnc/tech/V6Unix.html http://www.chiappa.net/~jnc/tech/multics/MulticsPanels.html http://ana-3.lcs.mit.edu/~jnc/tech/DECIndicatorPanels.html so I do understand going that way. (The last two could easily be moved to the CHWiki, if I had the time/energy...) But speaking of the time to write things, that's another advantage of using the CHWiki - if you want to mention some technical term/concept, on the CHWiki you can just link to it with '[[xxx']]', and if some novice reading the article needs to know more about that topic, they just click on the link; no need to write explanatory text yourself. E.g. my 'Bringing up V6 Unix on the Ersatz-11 PDP-11 Emulator' page would probably have benefitted from that, and been a bit less long-winded as a result... Noel

8 years

4
5
0 0

HP 9816 CP/M-68K

by aek＠bitsavers.org

floppies recovered and uploaded to http://bitsavers.org/bits/HP/HP_9000/cpm-68k I'm pretty sure this will only work in a 9121 single-sided drive but I'll be trying to boot it soon

8 years

8
16
0 0

Microfiches on Ebay

by jnc＠mercury.lcs.mit.edu

> From: Mattis Lind > Many are already available online but some I cannot find. Which ones are you missing? I'm curious to see if my set has them. Noel

8 years

7
11
0 0

PDP 11/05 - looking for help

by jnc＠mercury.lcs.mit.edu

> From: Dave Wade > Or pick up the signals from the wire wrap I think the OP's approach - disable the on-board console - is probably best: that port is limited to 2400 baud, and with DL11's being a dime a dozen (OK, I exaggerate a bit, but only slightly - they're available for about $25)... And that way you get RS-232 too, and don't have to deal with 20mA - you can plug straight into a PC. Noel

8 years

1
0
0 0

Available : 2 Sun caddies / disk brackets

by ed＠groenenberg.net

For the cost of postage: 2 Sun brackets, part no 330-1806 One is made of clear plastic, the other is purple. They are located in the Netherlands. Regards, Ed -- Ik email, dus ik besta.

8 years

1
0
0 0

PDP 11/05 - looking for help - looking for Jorg Hoppe?

by sop00000h＠scotnet.co.uk

Jorg Hoppe: I am the proud owner of an old pdp11/05. I does not have a M9970 (nor can I find one). So I cant do 20ma/rs232 output. I read in somebodies note about jumpers @W1 and W2 on the M7261F that I have. Apparently cutting one of these disables the onboard uart and will allow me to put in a serial card. I cant find the jumpers. Nor can I find a print set. Any suggestions?

8 years

2
1
0 0

Duplicate PDP-11 fiche FTGH

by jnc＠mercury.lcs.mit.edu

So I bought some of those fiche that that eBay seller had, for publications I couldn't locate (either physical, or online), but now that I have a complete set of fische, the duplicates aren't any use. So, if anyone has a use for them, let me know, FTGH: They are: BA11-N Tech Manual BA11-N User's Guide DC11 Tech Manual DEUNA Tech Manual DR11-B Maint Manual FP11-B Maint Manual KB11-A,D Maint Manual KD11-D Maint Manual KK11-A Tech Manual (Please don't say "I'll take them all", I'd like to 'spread the wealth' around a bit... :-) Noel

8 years

1
0
0 0

PDP 11/05 - looking for help

by jnc＠mercury.lcs.mit.edu

> From: sop00000h > I read in somebodies note about jumpers @W1 and W2 on the M7261F that I > have. Apparently cutting one of these disables the onboard uart and > will allow me to put in a serial card. Yes, W1. And it's not cutting, it's inserting. > I cant find the jumpers. They aren't labeled, which does not help! With the board component face up, and the contact fingers at the bottome, W1 is to the right of E69, and W2 is to the right of E73. > Nor can I find a print set. Any suggestions? Of the 4 known sets of drawings for the -11/05, 3 are available online. This page: http://gunkies.org/wiki/PDP-11/05 gives the names, which should help you locate them (all are in BitSavers, IIRC). Noel

8 years

1
0
0 0

Reading a PDP-11 RL02: Anyone Around the U.S. West Coast?

by jnc＠mercury.lcs.mit.edu

> From: Bill Degnan > What is the OS of the disks, what system was this disk used to > create/save files to the RL02? Doesn't really matter, does it, as long as the bits can all be read off the pack into a file? Once it's in a file, the appropriate OS, running in a simulator (and most are, these days) can read the files out. Worst case, someone can write a program to read the files out (I've done that for V6 filesystems - before I found http://www.tuhs.org/Archive/Tools/Filesys/) and also 4.2 FFS. (And somewhere I used to have a program to read DOS disks, but I just looked and couldn't find it.) Noel

8 years

3
2
0 0

How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

by jnc＠mercury.lcs.mit.edu

> From: Grant Taylor > I've had plenty of things that I've found and referenced over the years > that have disappeared from where I knew it was. Ah, bit rot - the scourge of the Web. Thank G-d for the Internet Archive! Although at least one major list archive had been marked to exclude robots, or something, because even though I had 'good at one point URLs', the IA contained... zip. > I've taken to mirroring copies of it on my site, with proper > accreditation. Yes: http://www.chiappa.net/~jnc/tech/archives.html#Personal and of course also: http://ana-3.lcs.mit.edu/~jnc/cctalk/ (need to add a link to that one on my home page...) Noel

8 years

1
0
0 0

How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

by jnc＠mercury.lcs.mit.edu

> From: Grant Taylor >> people are more likely to find it, when they're looking for info on a >> topic, if it's part of something like the CHWiki, than they are on >> individual Web sites. > I question the validity of it. It wasn't just supposition on my part; as I had mentioned: >> I just tried a few samples to verify that claim and I didn't cheat by using, e.g. KT11-B, I tried to use fairly generic things, e.g. 'RK05 disk drive' (third listing), 'PDP-11' (fifth listing), etc. Admittedly, that's hardly cast-iron proof, but it's a lot beter than just 'it stands to [my] reason'.... > searching Google for CHWiki came up with things that I think were name > collisions. Huh? If you do a Google search for 'computer history wiki', it's the first non-Wikipedia page in the results list. I call it the CHWiki when typing posts for here since I would get tired of typing out the whole long 'Computer History wiki' every time, but I will add that short term to some pages there to help it show up under that name. > I'd be more likely to publish things on (what I consider to be) an even > bigger and more well known Wiki, namely Wikipedia. Be my guest! :-) I've been there, done that, and moved on, because I got tired of stupidity like this: https://en.wikipedia.org/wiki/Talk:History_of_the_Internet/Archive_3#Pictur… Also, the page that started this ("How to enable USB drives in both Windows 98SE AND MS-DOS 7.1") might well be ditched from Wikipedia, for a variety of Wiki-bureacratic reasons I won't get into here ('no original research', plus to which it's not really suitable material for a general encyclopaedia). >> http://www.chiappa.net/~jnc/tech/V6Unix.html >> http://www.chiappa.net/~jnc/tech/multics/MulticsPanels.html >> http://ana-3.lcs.mit.edu/~jnc/tech/DECIndicatorPanels.html >> >> so I do understand going that way. > it seems as if you are asking us to do something different than you > yourself are currently doing Err, no. The first and third _pre-date_ my joining the CHWiki. Why I did the second one as a page on my own site, I don't really recall - maybe because it changed so much in the course of researching it? (It's very convenient - I had the HTML source on disk opened in a browser window, and any time I wanted to see what it currently looked like, I just had to hit the 'refresh' button.) I have done several major things only on the CHWiki, e.g.: http://gunkies.org/wiki/KT11-B_Technical_Manual as well as a ton of other stuff. But clearly you aren't interested in moving off your own personal site - which is fine. Noel

8 years

5
5
0 0

KDF11-B ROM machine-readable source

by jnc＠mercury.lcs.mit.edu

Is the code for the KDF11-B ROMs available in machine-readable source anywhere? I looked with Google, but couldn't find anything. Eventually I recalled having seen it in the fiche, which was better than nothing (disassembling something that size to see how it worked was, ah, unappealing, shall we say?), but it's still pretty hard to work with (where is 'FOO:' in all these pages), hence the interest in the machine-readable source. BTW, it appears these ROMs can be used in the BDV11, too - which is nice because the stock BDV11 code only checks 256 KB, whereas the KDF11-B code does the whole 4MB (and, IIRC, support more devices, too). I bought a BDV11 which had EPROM's in it which did more than 256KB, and looking at them, they appear to contain the KDF11-B code. So I promptly made a bunch of copies and installed them in place of the stock ones in my other BDV11's! :-) Noel

8 years

2
1
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