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

by wlewisiii＠gmail.com

I turned to set up a new to me toy my friend gave me yesterday, a DEC Alphastation 300 4/266. 1 ST12400N, 1 ST31230N, floppy, CD, 1 gb ram. Unknown video. I've plugged in both a VGA & my DEC VRC16 monitors, PS/2 keyboard & mouse and I get no video out on either monitor, only a "keyboard error" on the LEDs on the back of the computer. I've also tried a USB keyboard that is known good via a usb/ps2 adaptor with no joy as well. Any other troubleshooting ideas? Thanks! -- Live like you will never die, love like you've never been hurt, dance like no-one is watching. Alex White

11 years, 9 months

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TU56 Motor Run Capacitors.

by bob＠theadamsons.co.uk

I'm refurbishing a TU56 and of course the tape drive motor capacitors are completely shot. They're 100uF and only need to be about 60-80V to be quite safe (originals 100uF/55V) but I can only find capacitors rated for 450V which is no big issue except for their size. I'm thinking of using motor start capacitors. They're only rated intermittent but I feel that the derating to around 60V should probably give them a good lifetime. Views? Bob

11 years, 9 months

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Copying protected floppies?

by fozztexx＠fozztexx.com

I got a copy of The Newsroom by Springboard new in the box a few weeks ago. It's for the IBM PC and came on two 360k 5.25" floppies. The first thing I tried to do was make copies of the disks. Unfortunately it's protected and so I'm not exactly sure how to back them up. I tried teledisk but the copy it made doesn't work and Newsroom keeps insisting that I insert the original disk when I try using it on my PC. I read that teledisk was supposed to be able to deal with copy protection, but it clearly doesn't. I don't have a kryoflux. What other options are there for making backups of protected disks? -- Follow me on twitter: @FozzTexx Check out my blog: http://insentricity.com

11 years, 9 months

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XTIDE Universal BIOS on IBM PC?

by fozztexx＠fozztexx.com

I saw that the newest versions of the XTIDE Universal BIOS have a way to use the serial port as a disk drive by connecting to another computer running XP. Since my IBM PC doesn't currently have any kind of mass storage, this seemed like it could be handy, even if it might be terribly slow. I don't have an XTIDE card, but I do have a 3com Etherlink II 3c503 that has an empty socket. I burned the 12k xtl ROM to a 27c128 and filled the extra space with zeroes. I put it in the socket and now when the computer boots up I get "DC00 ROM" on the screen just before it tries to boot from a floppy. However that's it. I tried holding down the Alt key to get it to give me a menu or scan the serial ports, but nothing happens. Is there some trick to making the XTIDE ROM work in the 3c503 socket? -- Follow me on twitter: @FozzTexx Check out my blog: http://insentricity.com

11 years, 9 months

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Looking for XXDP EQKCE1 (11/70 instruction exerciser) source listing

by derschjo＠gmail.com

Hi all -- I'm assisting in bringing an 11/70 back to life and it's passing most diagnostics at this point, but the EQKCE1 (cpu exerciser) diagnostic is failing without any diagnostic message -- it's simply halting. I'd like to figure out what the test is doing before it dies, and before I resort to disassembling the code manually I was wondering if anyone happens to have a source listing for this. I haven't been able to dig one up online thus far... Thanks, Josh

11 years, 9 months

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IBM archive

by sales＠elecplus.com

I just came across this old archive, maybe it is new to some of you. http://ps-2.kev009.com/ Cindy Croxton

11 years, 9 months

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FS: PDP Systems in UK

by silvercreekvalley＠yahoo.com

Hi, I'm clearing some space in the attic so have various PDP systems available in the UK. In the main these are the desk side style case (can be rackmounted) with 11/83, or similar. All feature a 5.25" hard-disk and floppy (dual DEC style) and one or more serial connections. These are nice systems to use, a bit quieter than UNIBUS :). I also have lots of QBUS cards, memory, etc and CPU boards including some more recent (faster) Mentec boards (M100, etc) with on board RAM, FPU and serial ports. Email if interested. These systems are available in either Bucks (near London) or Yorkshire. Thanks

11 years, 9 months

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Xylogics

by jhfinedp3k＠compsys.to

I have a Xylogics manual: WIZARD I Installation Manual Documentation Number: 900-008-300 Revision: A Date: October 25, 1978 Estimate about 500 pages (250 double sided pages) I do not have the hardware and will be discarding the manual unless it has not been scanned and is needed. Jerome Fine

11 years, 9 months

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DECmate II H7842A and H7842B PSU Pinouts?

by bobvines00＠gmail.com

> Date: Sat, 6 Sep 2014 21:06:27 +0100 (BST) > From: ard at p850ug1.demon.co.uk (Tony Duell) > To: cctalk at classiccmp.org > Subject: Re: DECmate II H7842A and H7842B PSU Pinouts? > >> >> Rainbow Printset? http://bitsavers.trailing-edge.com/pdf/dec/rainbow/ >> >> * MP01722_PC100*-*B_Rainbow_Schematic_Jul84*.*pdf*, 2013-11-20 14:54, >> 3.3M >> >> Also: >> https://archive.org/details/bitsavers_decrainbowwSchematicJul84_3508632 >> >> Up to the usual DEC standards; no PSU schematic, however. > > And no RMA board, grpahis board, keybaord, monitors, drives. > > For all my diarams are my typcially hand-drawn scribble, I'll stick to > them.... > > My whole set of diagrams is over 100 sheets. I could be convinced to get > the PSU sheets scanend if somebody needs them or something like that... > > -tony Tony, Could you start scanning your diagrams of the PSU & boards that DEC didn't release drawings/schematics for? Especially the Rainbow's H7842B PSU -- I'd really appreciate a copy of that diagram. Thanks, Bob

11 years, 9 months

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Ann Arbor Terminals docs posted

by silent700＠gmail.com

(Special attn to AEK and Richard) I have scanned and posted some spec sheets and other promotional literature from Ann Arbor Terminals, Inc., circa 1979: http://chiclassiccomp.org/docs/index.php?dir=%2Fcomputing/AnnArborTerminals I found them buried under mounds of decaying paper in an estate sale basement, so there is some damage, but it's all legible. Feel free to add to your own archives, sites, etc. Richard - I somehow ended up with three entries on Manx for the VT52-Compat model. Please delete the last two. - jht

11 years, 9 months

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old S-100 equipment for the taking

by jbryanlewis＠gmail.com

My wife and I were cleaning out the attic this summer and came across my old S-100 computer, with manuals. I'm finally getting around to posting to this list in the hope that someone can use the parts. I'm not really looking to make any money off them... it just feels like a shame to take them to the dump. Unfortunately in the couple of months it took me to get around to this, the manuals seem to have disappeared. There's a chance that my wife tossed them in the trash. (*whimper*) One Morrow 8" floppy drive One Discus HD. Dunno if it's a 10 or 20 MB, doesn't say on the outside. Two Godbout RAM20 boards = 2 x 32K. Morrow Winchester Controller, HDCA-3 One multi-I/O card. One S-100 bus chassis with big honkin' power supply. Doesn't show a brand name, probably Morrow Designs. Bryan Lewis

11 years, 9 months

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Further PDP-11/05 debugging -- core memory faults

by marc.verdiell＠gmail.com

> My own little treatise on the organization and electronics of core memory for more depth: > http://www.cs.ubc.ca/~hilpert/e/coremem/index.html +1 , Like, Thumbs up! What a superb write-up. Thank you for this fantastic contribution. Could be published as part of a reference book. Marc

11 years, 9 months

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Getting started with Data General Nova hardware -- looking for a few pointers.

by derschjo＠gmail.com

Hi all -- I've just acquired a new project (which I have promised myself I won't get too involved in until I have the 11/05 running satisfactorily). Well, a pair of projects. Or a pile of projects, depending on how you look at it. What I've ended up with are two Data General Nova chassis: an 800 and a 1200, and a box of boards to go with them. Only the 800 chassis has a power supply. I don't know much about the history of this hardware other than that it originally came from the University of Washington, and I don't know that any of this actually went together originally, but in addition to the chassis, I have: - 2 DGC Nova 800/820 CPU sets (two boards each) - 4 DGC Nova 8KW core planes - 2 Keronics P-4 8KW core planes - 1 Basic I/O Control board - 2 DGC Nova 2 CPU boards - 1 DGC Nova 2 16KW core plane I've been looking to get into DG stuff for awhile, but I don't have a lot of experience with the hardware. I've gotten pretty good with DEC stuff over the years and there are a lot of good informational sites out there on the 'net for DEC hardware to help the beginner. The DG hardware seems to be less well covered in this regard. I'm going to need to spend some time to get up to speed -- aside from reading through the manuals on Bitsavers and whatnot, does anyone have any general recommendations for getting started? Will the Nova 2 stuff work in an 800/1200 backplane? (Is the Nova 2 memory compatible with the Nova 800 CPU?) Anyone have any docs for the Keronics core boards? Anything I should be aware of when working on this hardware (gotchas, etc...)? I've heard rumor that the power supplies are not the most robust things in the world... Thanks as always, Josh

11 years, 9 months

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Is plastic National Semiconductor (NS) TTL chips worse

by marc.verdiell＠gmail.com

The only way to know would be to look inside. If you want and are willing to ship the dead chips to me in the US/Silicon Valley, I could put them in the X-Ray machine and see if there are any obvious bond wire faults. But the wires might still look OK in the X-Ray micrograph if the defect is due to development of an oxide film between the pad of the circuit and the bond, or a chemical diffusion or reaction in the bond pad itself. There are (very expensive) tools that can ferret out such material problems (after you crack the chip open), but I am not sure I can get easy access to them. Maybe I can ask someone at National Semi (now TI) down the road from us and see if they'd be interested to research the cause of failure. Would be cool to do an electron micrograph section and find out...

11 years, 9 months

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3B2 cards

by wdonzelli＠gmail.com

OK, I just uncovered three cards for a small 3B2 - two are quad serial ports, and the third is something else. It seems to me a long long time ago, I was supposed to give these to someone here (or the forum), but clearly things did not connect. To whoever it was - sorry! So, who was it? Shake a few nuts and bolts free in my head and let me know, and I will get them shipped out. If I do not figure out who it was to receive them, I suppose I will throw them up on Ebay. -- Will

11 years, 9 months

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DECmate II H7842A and H7842B PSU Pinouts?

by bobvines00＠gmail.com

Does anyone have the pinouts for the DECmate II power supplies? The two PSU model numbers that I have are H7842A and H7842B, but I'd like to know their pinouts in order to properly connect a load (or loads) to them for "smoke testing" away from the computers themselves. They are both 220W supplies according to their labels. (These PSUs may have also been used in the DEC Rainbow.) Does anyone, by chance, have the schematic(s) for these power supplies? Other than close inspection for bulging/leaking capacitors or obviously burnt/damaged components or areas on the PCB, what should I look for to increase my chances of not allowing the smoke to escape? (Also, I recently found a "vintage computer" discussion site where they were trying to collect, preserve, & make *usable* images of any DEC microfiche sets they could get. One guy said that he had a fiche set that included the DECmate II. None of these fiche sets are on-line yet as far as I can tell.) Thanks, Bob

11 years, 9 months

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my VCFMW Wishlist- Wanted Items

by slandon110＠gmail.com

Looking for the following stuff Amiga 1200, 3000 or 4000- Have a really souped up Mac SE/30 to trade Atari Computer, preferable an ST STE, stuff like that A minicomputer of some sort, preferably a small PDP or something like that. Ill have lots to trade, bringing a truckload of goodies Steve

11 years, 9 months

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DEC VAX SDI interface via BDA?

by nw＠retrocomputingtasmania.com

I was poking about for alternatives to the hefty KDB50-Q SDI controller set for MicroVAX to connect up my Emulex SD590 SDI hard drives and found on ebay this item: http://www.ebay.com/itm/190665553055 DEC T1003 VAXstation BDA SDI 5015772-01 Disk Adapter to Single Drive Interface It is labelled as a VAXstation BDA (VAX BI Disk Adapter) and interestingly the T1003 is one component of the KDB50-Q board-set, so I am guessing this could be a VAXstation specific KDB50 all-in-one? anyone know anything about these? I could not find any manuals for them nor could I find a VAXstation that has some type of extensible bus that would support a board like this. I notice this seller has several other "VAXstation" boards too. I have a couple of M38 VAXstations but I don't think they take any type of expansion option other than graphics cards, so I guess the VAXstation BDA options go in the 4000 series? Looking at the few pages on the 4000 series does not reveal much in the way of expansion options either. thanks, nigel.

11 years, 9 months

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M4 Data 9914 tach roller fix

by aek＠bitsavers.org

I was working on 1/2" tape recovery this week, and wanted to see if the M4 that I got from Guy worked any better that the Qualstar I was using, so I dug the 9914 back out after a rather frustrating experience earlier this year trying to get the tach roller resurfaced (it's the only rubber part in the whole tape path). It turns out 1/2" ID surgical tubing works just fine stretched over the tach roller. It's a bit of a challenge getting it over the lip of the roller but once it's in place it fills in the gap where the original rubber was just fine. I was able to recover the one bad block on the 1990 MSDP tape I had, so that's been updated on bitsavers, along with a bunch of other random tapes that were in the to do pile.

11 years, 9 months

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warehouse closing

by sales＠elecplus.com

I am closing my warehouse by the end of this month. My husband's health is rapidly failing, and I want to spend what time he has left with him, not with a bunch of old computers and parts! Please review the pics here: https://plus.google.com/photos/106111250846948401252/albums?banner=pwa But know that the Apple room and the Lisa are gone. Lots of old keyboards, terminals (like the ones on Halt and Catch Fire), mono monitors new in the box, IBM 5150 and 5160 with kbds and monitors, tested working, u name it. Please also see www.elecshopper.com, make offer for anything you want. Still have 2 gaylords of IBM compat laptops, 8088 thru 80486 and P1, and 1 gaylord of Apple laptops, from the first ones thru abt 1996 or so. I would rather this stuff go to someone who will cherish it, then go by the pound to be ground up. Also more than 100 computer books from Apple and DOS thru Windows XP and Server 2003. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-792-3400 phone 830-792-3404 fax sales at elecplus.com AOL IM elcpls

11 years, 9 months

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For the TRS-80 enthusiasts

by trash80＠internode.on.net

Latest issue of TRS8BIT has been made available for the TRS-80 enthusiasts among us. Some very good articles including one on breathing life back into a seemingly dead Model 2, reinking printer ribbons, the Model 4 gate-array motherboard, plus many others. http://www.fabsitesuk.com/tandy/trs8bit0803.pdf ++++++++++ Kevin Parker ++++++++++

11 years, 9 months

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DEC VAX SDI interface via BDA?

by michael.99.thompson＠gmail.com

> From: Camiel Vanderhoeven <iamcamiel at gmail.com> > Date: Sat, 6 Sep 2014 11:18:14 +0200 > That's for a VAXBI bus based system. The only VAXstation it would work > in is a VAXstation 8000, which is very hard to find. > I have one, minus the E&S graphics subsystem. -- Michael Thompson

11 years, 9 months

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Bringing alot of SGI, sun & some dec stuff to VCFMW

by slandon110＠gmail.com

Is there any interest in a bunch of SGI gear, Sun systems and some DEC stuff, Im bringing a bunch of it to VCF. Theres Indigo's, Octanes, Octane 2s, Couple of Ultra 5's Some sun blade servers. Lots of SCSI drives & Cables. Stuff like that let me know

11 years, 9 months

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Original Apple II and SE/30 for sale or trade at VCFMW 9.0

by slandon110＠gmail.com

Ive had this original Apple II for a very long while and I haven't given it the love it deserves. I will be bringing it to VCF for sale. It has a Disk II Drive, 9inch B&W Monitor, SuprMod RF Modulator and 2 Boxes of Disks. It does need a bit of work, the original keyboard has non operational keys, however a II plus keyboard is installed in the machine and it does work fine. It also occasionally drops to the monitor. This has Applesoft in ROM, a 16K Language Card, 64k RAM and a Parallel interface card. The next machine that needs a home is a pretty tricked out SE/30 It has 68MB RAM, Ethernet Card, 4GB SCSI HDD and has OS 7.5.5 installed. It can run A/UX on this configuration. Included will be a copy of the A/UX CD-ROM and the associated files to install it on a CD as well. Everything is make a reasonable offer on it, Or im willing to trade the souped up SE/30 system for a really nice Amiga system, A 1200 with Accelerator, or a 4000 with an Ethernet card. Maybe even a 3000 if its wicked enough.

11 years, 9 months

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Further PDP-11/05 debugging -- core memory faults

by js＠cimmeri.com

> Subject: > Further PDP-11/05 debugging -- core > memory faults > From: > Josh Dersch <derschjo at gmail.com> > Date: > 9/5/2014 11:11 PM > > To: > General Discussion: On-Topic and > Off-Topic Posts <cctalk at classiccmp.org> > > > Hi all -- > > The CPU in the 11/05 seems to be > behaving nicely as far as I can tell, > now that the Microcode ROMs are no > longer filled with bogus data. It > will run small programs I've toggled > in without issue, and so I've moved > on to testing the memory. Josh, what do you end up doing to recreate the ROMs? Thanks, John S.

11 years, 9 months

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Reproduction front panels and switch levers for PDP-8/E and M

by j＠ckrubin.us

I'm in the process of reproducing front panels for PDP-8/E and/or M machines, as well as switch levers for these machines and others that use the same shape but different colors (e.g. 8/L, 11/20). For the front panels, I'm working with a local (Chicago) silk-screen house to create the reproductions. At this point (still exploring final pricing), it looks like unit cost will be about $200 for a run of 5. This will most likely be a CNC cut acrylic panel (laser probably won't work because of the angled relief for the key switch) with silk-screen printing front and back. The panel shape is the same for E and M but the screens are quite different. I've also got a couple different M variations. Note that each panel requires five or six screens, including black masking on the back and transparent red or "frosted" masks for the indicator lights in addition to the three colors on the front. I'm not sure about possibly adding a transparent overlay (non-original) over the front silk screening to protect the final product. Please let me know your interest and thoughts about a protective overlay. For the switch levers, "phooky" from the NYC Resistors has done a 3D rendering - http://www.thingiverse.com/thing:360853 - and printed prototype levers and mounting frames. Note that there are three renderings at the thingverse site - original lever, lever with improved pivot (metal pin) and bracket for attaching lever to available slide switch. Phooky has also printed up samples of these objects. The next step is to work on injection molding the parts. The Resistors have an injection molding setup and phooky is planning to create a mold using CNC equipment and his 3D renderings. There are several reasons for moving from 3D printing to injection molding for these parts. The first two, finish and mechanical strength, are slowly being addressed by improved printers but the third reason, color matching, is the critical difference. The front panel project is in progress and hopefully panels will be available in a few months. The switch project is very much exploratory with no promises or dates at this time. Comments please! Jack

11 years, 9 months

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Pdp11/34 bus sack timeout card

by roeapeterson＠gmail.com

I'm helping a friend resurrect an 11/34. Unlike my 34a, it requires an M8264 no-sack timeout board. Two questions. Does the board need to be at the end of the bus? And, does it need a slot with the NPR jumper removed? Thanks. This machine is an old friend, and it is nearly running again after many years.

11 years, 9 months

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ID this terminal (found in 1969 issue of Rolling Stone)?

by derschjo＠gmail.com

Hey all ? Spent a bit of time this weekend reading through some bound editions of Rolling Stone magazine (July-November 1969) and found the below (in an article about the Chicago PD's ?Vice Control? division): https://plus.google.com/u/0/photos/117997069161125071032/albums/58803294238… This was in the September 6, 1969 issue. It reminds me a lot of an Imlac, but this is a bit too early ? as far as I know the Imlac was early 1970. Anyone have any ideas what that thing is? - Josh

11 years, 9 months

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Craigslist ad for Sr. Vintage Software Developer (Seattle)

by isking＠uw.edu

On Sep 6, 2014 10:04 AM, <cctalk-request at classiccmp.org> wrote: > > > Message: 3 > Date: Fri, 5 Sep 2014 19:33:20 -0700 (PDT) > From: geneb <geneb at deltasoft.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: RE: Craigslist ad for Sr. Vintage Software Developer > (Seattle) > Message-ID: <alpine.LFD.2.03.1409051932070.22083 at deltasoft.com> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > On Fri, 5 Sep 2014, Rich Alderson wrote: > > >> Yeah I like to think I have it pretty good in academia but this is > >> definitely a #hotjob. You actually pay people to do that stuff?? :) > > > > > > Yes, we certainly do. > > I think it's pretty cool, but the bachelor degree requirement shouldn't be > there. It's got f*ck all to do with someone's ability to write software & > maintain hardware for vintage machines...or modern ones for that matter. > "Brave, brave Sir Robin...."

11 years, 9 months

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DECmate II H7842A and H7842B PSU Pinouts?

by bobvines00＠gmail.com

> Date: Thu, 4 Sep 2014 10:13:00 -0400 > From: Todd Goodman <tsg at bonedaddy.net> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: Re: DECmate II H7842A and H7842B PSU Pinouts? > > * Bob Vines <bobvines00 at gmail.com> [140904 10:02]: > [SNIP] >> (Also, I recently found a "vintage computer" discussion site where >> they were trying to collect, preserve, & make *usable* images of any >> DEC microfiche sets they could get. One guy said that he had a fiche >> set that included the DECmate II. None of these fiche sets are >> on-line yet as far as I can tell.) >> >> >> Thanks, >> >> Bob > > Would you possibly pass along that site? > > Thanks! > > Todd Todd, It was http://www.vintage-computer.com/vcforum/archive/index.php/t-24206.html?s=8d… Sorry for the late response -- I get the digest version of the cctech list and often fall behind in my reading. Bob

11 years, 9 months

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Craigslist ad for Sr. Vintage Software Developer (Seattle)

by marc.verdiell＠gmail.com

What a cool job! If I lived there I would apply...

11 years, 9 months

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Wanted: G4 Cube power adapter, dead or alive; ADC/DVI converter

by toby＠telegraphics.com.au

Hi, If anyone has one of these, dead is OK, I'll take it off your hands for $X + shipping (depending, somewhat, on X). It needs to include the complete 4-pin cable from adapter to Mac. Also looking for ADC/DVI adapter, e.g. Belkin. Quote your $Y. Thanks, --Toby

11 years, 9 months

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KDJ11 cpu IO panel

by roeapeterson＠gmail.com

Does anyone have a cpu IO panel for the KDJ11 pdp11/83-93? This is the panel that mounts on the back of a ba23 or ba123 enclosure and has baud rate switch, console rs232 port, and LED status display. I be interested in buy or trade... Thanks.

11 years, 9 months

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Craigslist ad for Sr. Vintage Software Developer (Seattle)

by christian_liendo＠yahoo.com

http://seattle.craigslist.org/see/sof/4652352746.html Sr. Vintage Software Developer (Seattle) ? craigslist - Map data ? OpenStreetMap 505 5th Ave S. (google map) (yahoo map) compensation: Competitive salary & benefits The Living Computer Museum (LCM) (www.livingcomputermuseum.org) is hiring a Sr. Vintage Software Developer. This position will have responsibility for operating system restoration and development for a variety of vintage computer systems. The LCM maintains some 60 different types of vintage systems from mainframes to personal computers in operational state and available for museum visitors to use. The LCM engineering team is responsible for the restoration and maintenance of the machines. The team has just finished a major restoration of a Digital Equipment Corporation PDP10 KI system and is embarking on a significant restoration of a Control Data Corporation 6500 supercomputer. These restorations include repair/restoration of hardware, development of emulators where needed and the development of "programming elements" that enhance the visitor experience. The ideal candidate will have: ? A Bachelor's degree and 7-plus years' experience in developing and maintaining software for complex systems. (e.g.: multi-user operating systems) ? Ability to put together and maintain operating systems. ? Experience in development of support software for hardware interface cards in both Windows and Linux. ? Flexible and adaptive to switch between different systems and environments. ? Experience programming with multiple assembly language architectures. ? Experience working in a team environment of both hardware and software engineers. Link to appply https://hire.jobvite.com/j?cj=oSavZfwg&s=Craigslist

11 years, 9 months

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Sun Servers in DC area

by technobug＠prelim.org

A friend forwarded a Craigs listing from the DC Area for two Sun servers. <http://washingtondc.craigslist.org/nva/sys/4648090405.html> Price is reasonable, but the weight probably requires local pickup. Great house warmers for the coming winter season? ->CRC

11 years, 9 months

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Free for pickup: DEC Documentation in Peoria, AZ

by radioengr＠gmail.com

...located Peoria Arizona. Rescued from a storage shed: - Lots of RSX-11M PLUS orange books. Various releases. - Decnet RSX documentation and media. - Lots of VMS orange books. A few gray books. Many of the notebooks have the pages still in shrink wrap. I also have boxes of TK-50s, 8 inch floppies, and magtapes. It is too hot to do an inventory right now. I think I'll keep the two Scientific Data Systems MDX systems, spare parts, and documents. Rob.

11 years, 9 months

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QED993 (was Re: KDJ11 cpu IO panel)

by ethan.dicks＠gmail.com

On Thu, Sep 4, 2014 at 2:45 PM, Glen Slick <glen.slick at gmail.com> wrote: > ... QED993 CPU boards... > > http://www.ebay.com/itm/200600166676 > > I bought one of those and was disappointed to discover that they do > not implement any floating point emulation at all and I had no luck > getting either 2.11BSD or RSTS/E 10.1 to run on it. So what's the QED993 good for? RSX-11 or a really fast RT-11 box? TSX-11? Who were they aiming at? -ethan

11 years, 10 months

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Anyone heard from Todd Fischer?

by dfnr2＠yahoo.com

Hello all, Has anybody been in contact with Todd Fischer of Fischer-Freitas / IMSAI? I had been in contact with him regarding a manual which I paid for, and apparently got lost in shipping, and I finally just ordered another manual in April, but have not heard from him since. I am not getting any response using his t*f at i***i.net address. Is he OK? If so, has anybody been in contact with him since April? If someone is able to contact him, I'd be grateful if you could help facilitate my getting in touch with him. I'd really like to get that manual! Thanks, Dave

11 years, 10 months

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IBM AS 400 for sale in Ontario, California

by tosteve＠yahoo.com

I received this from Matt. Contact him for more information. ------------------------------------------------------------------ I have a complete 1970's vintage IBM AS 400 with spare hard drive. Original owner, was working when put into storage 30 years ago. Will sell to best offer. Matt Gardner matt.mgci at dslextreme.com (951) 830-5316 Ontario,California ------------------------------------------------------------------

11 years, 10 months

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Looking for 11/05 control ROM listings A11A2 and A20A2

by derschjo＠gmail.com

I spent some time tonight debugging my problematic 11/05. The current issue is that Exam and Dep do not increment the address when depressed, and the PC does not increment when executing a series of NOPs. I started with the 74181 ALU for bits 0:3, checking the inputs, outputs, and the function control lines during an "Exam" operation. The inputs are correct but the outputs are always just the contents of A. The control inputs (mode and function) are all high, meaning that the ALU operation is set to just pass A through unchanged, which explains the behavior. The control inputs to the ALU are generated by two bipolar ROMs, (named A11A2 and A20A2) on the M7261 board. The addresses and Enable lines going into the ROMs look to be correct but the data coming out is all 1s, leading to the incorrect ALU control. I'm unsure whether these might be faulty ROMs or something else (incidentally, anyone know what kind of ROMs these are so I might hunt down a datasheet? The markings on the chips are all different and have lead me nowhere and the engineering drawings just refer to them as A11A2, etc. in the parts lists). Additionally, I cannot find a listing of the contents of these anywhere; the print sets on Bitsavers and elsewhere have listings for most of the other ROMs but of course not these two (unless they're tucked away somewhere apart from the schematics where I've somehow missed them...) Anyone spent any time debugging the microcode logic on one of these? Any tips? Thanks, Josh

11 years, 10 months

5
12
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Cosmac Development System CDP18S004

by Wayne.Smith＠warnerbros.com

> Date: Thu, 4 Sep 2014 09:35:26 +0200 > From: Camiel Vanderhoeven <iamcamiel at gmail.com> > Subject: Re: Cosmac Development System CDP18S004 > > It tells me I'm not authorized to view the album... Ugh - thanks - just changed the privacy settings to public - here's the link again: https://plus.google.com/photos/113825148583667464381/albums/605503163855891…

11 years, 10 months

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Cosmac Development System CDP18S004

by Wayne.Smith＠warnerbros.com

I am looking for one replacement pushbutton cover for the front panel of a Cosmac Development System. There's a link to some photos of the system below - the missing button cover is the one that goes on the "LOAD" button at the upper right of the first picture. Any help locating one of these is appreciated. Thanks. https://plus.google.com/photos/113825148583667464381/albums/605503163855891… Wayne Smith

11 years, 10 months

2
1
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What was the purpose of XCT on the PDP-10/EX on the S/360?

by krfkeith＠gmail.com

As I understand it, what these instructions do is basically jump to a word in memory, execute that word as an instruction, and them jump right back. What were the usages of these in standard code? What was the rationale behind them? -- Thanks, Kevin

11 years, 10 months

5
7
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Reproduction front panels and switch levers for PDP-8/E and M

by anders＠abc80.net

> Date: Wed, 3 Sep 2014 15:27:32 +0000 > From: Jack Rubin <j at ckrubin.us> > To: "Classic Computer List (cctalk at classiccmp.org)" > <cctalk at classiccmp.org> > Subject: Reproduction front panels and switch levers for PDP-8/E and M > Message-ID: <1409758047115.63856 at ckrubin.us> > Content-Type: text/plain; charset="iso-8859-1" > > I'm in the process of reproducing front panels for PDP-8/E and/or M > machines, as well as switch levers for these machines and others that use > the same shape but different colors (e.g. 8/L, 11/20). > > For the front panels, I'm working with a local (Chicago) silk-screen house > to create the reproductions. At this point (still exploring final > pricing), it looks like unit cost will be about $200 for a run of 5. This > will most likely be a CNC cut acrylic panel (laser probably won't work > because of the angled relief for the key switch) with silk-screen printing > front and back. The panel shape is the same for E and M but the screens > are quite different. I've also got a couple different M variations. Note > that each panel requires five or six screens, including black masking on > the back and transparent red or "frosted" masks for the indicator lights > in addition to the three colors on the front. > > I'm not sure about possibly adding a transparent overlay (non-original) > over the front silk screening to protect the final product. Please let me > know your interest and thoughts about a protective overlay. > > For the switch levers, "phooky" from the NYC Resistors has done a 3D > rendering - http://www.thingiverse.com/thing:360853 - and printed > prototype levers and mounting frames. Note that there are three renderings > at the thingverse site - original lever, lever with improved pivot (metal > pin) and bracket for attaching lever to available slide switch. Phooky has > also printed up samples of these objects. The next step is to work on > injection molding the parts. The Resistors have an injection molding setup > and phooky is planning to create a mold using CNC equipment and his 3D > renderings. There are several reasons for moving from 3D printing to > injection molding for these parts. The first two, finish and mechanical > strength, are slowly being addressed by improved printers but the third > reason, color matching, is the critical difference. > > The front panel project is in progress and hopefully panels will be > available in a few months. > > The switch project is very much exploratory with no promises or dates at > this time. > > Comments please! > > Jack I have heard that the reason for making the the pivot in plastic was that this should brake instead of the switch itself or the PCB in case of an accident. I have however restored a couple in my 8/L that was broken by drilling a hole through and inserted a metal pin. Works fine! Although I find this very interesting, at least in the levers since they fit on my 8/L. /Anders

11 years, 10 months

1
0
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picking up a collection of old computers

by seefriek＠gmail.com

From: "drlegendre ." <drlegendre at gmail.com> > You don't see dirt floors in mid-20th century constructions, at least not in my USA. Apparently Atlanta, GA isn't part of "your" USA. My mid-20th century construction certainly has a dirt floor in the basement, as do a number of the neighbors.

11 years, 10 months

1
0
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multitasking on PDP-11/03

by js＠cimmeri.com

On 8/27/2014 10:59 AM, cctalk-request at classiccmp.org wrote: > Subject: > Re: multitasking on PDP-11/03 > From: > Nigel Williams > <nw at retrocomputingtasmania.com> > Date: > Wed, 27 Aug 2014 21:09:47 +1000 > > > > On Wed, Aug 27, 2014 at 3:38 AM, > Andriy Romanenko <bigral at hotmail.com> > wrote: >> > What OS and/or running environment support time sharing on LSI11? Is there multi-user/multi-terminal support? > If you have a fast hard-drive you can run MINI-UNIX [1]: > > http://bitsavers.trailing-edge.com/bits/ATT/mini-unix_120679.zip > > We had this running circa 1980 with two (or maybe three) terminals and > 10MB Pertec fixed+cartridge disk system, LSI-11/03 with 56KB memory. > Before that we ran RT-11 [2] with foreground/background tasks and at > various times MU-BASIC (multi-user BASIC) [3]. Nigel, how (generally) did you adapt Mini Unix to that configuration? Did you have to write your own drivers for the hard drives? - John S.

11 years, 10 months

2
3
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ISO SCSI QIC serial service port info

by aek＠bitsavers.org

I'm working on recovering some 1/4" cartridge tapes, and started looking at SCSI drives. Located the reference manuals for the Tandberg 3600 Series and I had the Archive 2060S/2150S manual. What I'm trying to find is the service manuals. Detailed stuff (schems) would be great, but both drives have serial service ports and even a description of those would be helpful. I dumped the firmware for the Archive drives this afternoon, shot some pcb pics, up on bitsavers, and have some 3620's coming to dump that. Figures the Tandberg web site would disappear today (I grabbed the later drive manuals on Fri) So much for trying to email them to see if the 3600 service manual was still available.

11 years, 10 months

1
0
0 0

FS: DEC PDP11 gear and other stuff

by jhfinedp3k＠compsys.to

>aswood at t-online.de wrote: >Dear listeners of this list and too whom it may concern or might be interested, > >due to support my Thatched Roof Restauration Project at Indiegogo http://igg.me/at/reetdach I'm going to sell at lot of stuff from my collection: > >There are PDP11 Systems: 11/23Plus, 11/24, 11/34, 11/44, 11/73, 11/84 and 11/93. Either only the cpu or as complete systems with disk drives or RL drives, e.g. there is a DecSystem with a 11/23Plus and two RL02, nice 11/84 Systems in a dual rack layout, which can be placed underneath an office desk. > >There are H960 Racks with RK05 drives. > >Additionally VT100 Terminals, RA drives, RC 25 drives and media, Tape drives, spare boards, RL drives and media, RX01 and 02 Spares. > >Manuals and documentation. > >There are some SMD drives (Fujitsu), a RP06 drive. > >Furthermore I'm offering NEXT Stations (mono and color) and MicroVaxen, mostly SCSI System (dual BA23 Systems). Additionally "bigger" Vaxen. > >More: Tektronix Storage Tube Display, Tektronix Computer, Wang Computer. > >And HP1000 System like A700 and A900, HP 1000 E/F CPUs and spare boards > >There are some HP9845 Computer. > >Feel free to contact me off-list. > >If you are willing to spend some $/? to my campaign, I possible will be able to order the roofer at the beginnig of October. > >Andreas > > I am using an old IE browser under Windows XP, so I can't see the stuff unless I update - which I can't do since it is not my computer. Any possibility of making the stuff compatible? Jerome Fine

11 years, 10 months

1
0
0 0

[SPAM key] - FS: DEC PDP11 gear and other stuff

by jhfinedp3k＠compsys.to

>aswood at t-online.de wrote: >Dear listeners of this list and too whom it may concern or might be interested, > >due to support my Thatched Roof Restauration Project at Indiegogo http://igg.me/at/reetdach I'm going to sell at lot of stuff from my collection: > >There are PDP11 Systems: 11/23Plus, 11/24, 11/34, 11/44, 11/73, 11/84 and 11/93. Either only the cpu or as complete systems with disk drives or RL drives, e.g. there is a DecSystem with a 11/23Plus and two RL02, nice 11/84 Systems in a dual rack layout, which can be placed underneath an office desk. > >There are H960 Racks with RK05 drives. > >Additionally VT100 Terminals, RA drives, RC 25 drives and media, Tape drives, spare boards, RL drives and media, RX01 and 02 Spares. > >Manuals and documentation. > >There are some SMD drives (Fujitsu), a RP06 drive. > >Furthermore I'm offering NEXT Stations (mono and color) and MicroVaxen, mostly SCSI System (dual BA23 Systems). Additionally "bigger" Vaxen. > >More: Tektronix Storage Tube Display, Tektronix Computer, Wang Computer. > >And HP1000 System like A700 and A900, HP 1000 E/F CPUs and spare boards > >There are some HP9845 Computer. > >Feel free to contact me off-list. > >If you are willing to spend some $/? to my campaign, I possible will be able to order the roofer at the beginnig of October. > >Andreas > I am using an old IE browser under Windows XP, so I can't see the stuff unless I update - which I can't do since it is not my computer. Any possibility of making the stuff compatible? Jerome Fine

11 years, 10 months

1
0
0 0

Making images of old CDs

by abuse＠cabal.org.uk

Hi, The recent thread on AB20 reminded me I have a large pile of CDs from the 1990s that could do with being imaged and uploaded to archive.org. What's the best free Unix tool[0] for doing this? Sure, I know about dd and cdparanoia, but those only extract data and CDDA respectively, and I'd prefer produce an actual image complete with TOC, subchannels, etc. To *use* the data, I can always transcode from that into something lossier such as FLAC :) but the reverse transformation is not possible. Failing that, I can go off and *write* one, but I'd rather not spend the effort if something suitable already exists and has already been well-tested and confirmed to not make subtle errors in rips. (Bonus points for tips on how to do the same with Blu-Ray discs, since I may as well archive them now rather than leave it until the 2030s.) [0] I say this otherwise some berk will pipe up with "you can do that with SuperMegaRipper Pro from Malware Inc. for Windows 9, and it costs just $299 for a 60 day licence". I'd rather toss the discs in the bin.

11 years, 10 months

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