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

Anyone have a copy of XXDP for the PDP-11/40?

by RichA＠vulcan.com

We are having an issue (a progressive issue, at that), with the PDP-11/40 front end in our DECSYSTEM-2065. There are no diagnostics for the front end on the diagnostics pack (KLAD), only a couple of programs for formatting an RP06 disk pack. All other PDP-11 programs on the KLAD are tests for the main processor's hardware prior to loading microcode and running PDP-10 programs to test it further. The PDP-11 diagnostic suite, collectively called XXDP, comes in different variants based on the actual processor (or processor family). We happen to have a set of XXDP diskettes for the 11/34, but that chokes (as one might imagine) on an 11/40. So. Does anyone on the list happen to have a copy of the 11/40 version of XXDP? We would very much like to borrow and duplicate it if you are willing to allow us to do so. Thanks, Rich Rich Alderson Vintage Computing Sr. Systems Engineer Vulcan, Inc. 505 5th Avenue S, Suite 900 Seattle, WA 98104 mailto:RichA at vulcan.com mailto:RichA at LivingComputerMuseum.org http://www.LivingComputerMuseum.org/

13 years, 9 months

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"RTTY Electronics" - Teletype Machines, Parts and Service

by tosteve＠yahoo.com

Recently stumbled-upon this guys website who lives in El Sobrante, California (near San Francisco). He has "literally 100,000's of Teletype parts, some new, organized, indexed, and available for purchase by Teletype restorers, rescuers, and users of Teletype machines of yesteryear." http://www.johnwhitney.com/misc/paul-rtty.htm

13 years, 9 months

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Anyone have a copy of XXDP for the PDP-11/40?

by shadoooo＠gmail.com

I think you could use SIM-H with the image on bitsavers to create floppy images with the files you need for your machine. Then maybe you could transfer the images to real floppies using VTserver... I did so with my 11/23... Andrea

13 years, 9 months

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Regarding SATA vs. SAS/FibreChannel

by fraveydank＠gmail.com

As long as we're on the subject, here's an interesting article I saw just today about the performance and data safety aspects of SATA vs. SAS/FibreChannel/SCSI disks. http://queue.acm.org/detail.cfm?id=2367378 It's by Marshall McKusick, who is a man who ought to know his filesystem and disk stuff. For those who don't like going to web articles, it basically boils down to the fact that while SATA is perfectly capable of supporting proper tag queueing, most bottom-dollar drives don't and basically all other higher-end transports (including SAS, FibreChannel, and parallel SCSI) do. There's a lot of other neat stuff in the article, but I thought it might be interesting while we're bashing PATA and giving SATA a "meh" around these parts. - Dave

13 years, 9 months

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ASR-33 on eBay in Melbourne

by thrashbarg＠kaput.homeunix.org

http://www.ebay.com.au/itm/Teletype-ASR33-/160878867797 $50 at the moment. Just a heads up. Alexis.

13 years, 9 months

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Origins of term "laptop" computer was Re: Bill Moggridge

by feldman.r＠comcast.net

>Message: 9 >Date: Wed, 12 Sep 2012 17:37:01 -0400 >From: Evan Koblentz < evan at snarc.net > > >Osborne never did ship a battery, though. Wrong! See my previous post (I have one). Bob

13 years, 9 months

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Origins of term "laptop" computer was Re: Bill Moggridge

by feldman.r＠comcast.net

>Message: 2 >Date: Wed, 12 Sep 2012 11:01:11 -0700 (PDT) >From: Fred Cisin < cisin at xenosoft.com > > >On the Osborne 1, Lee Felsenstein designed in a connector for external >battery power! ?When queried about how large the battery would be, Lee Measuring mine (including case) , it's a bout 155mm wide x 115mm deep x 190mm high, 3.6kg :-P Bob >answered, "How big is your CAR? ?It is not intended for portable use on >batteries." ? I thought that that interchange was on Computer Chronicles, >but I can't find it. >So, he wasn't competing for the "first ridiculous laptop" title. >(BTW, Lee was driving a 1977 Honda Accord) > >-- >Grumpy Ol' Fred ? ? ???????????????? cisin at xenosoft.com

13 years, 9 months

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Netscape 7.2 Mirgration

by jhfinedp3k＠compsys.to

I am currently using Netscape 7.2 under Windows 98SE. Has anyone any experience migrating all of the files to a 32 bit Windows XP? I have over ten years worth of e-mails and posts from previous versions of Netscape as well as the current version that I very much wish to retain as is. In addition, I just tested the Win32 variant (a 32 bit program, of course) of V6.0 Ersatz-11 under a 64 bit Windows 7. It seemed to work very well running at about twice the speed of an older system which was running under Windows XP. Does anyone have any experience in a migration of Netscape 7.2 to a 64 bit Windows 7 system? If Netscape 7.2 and Ersatz-11 can work well using a 64 bit Windows 7 system, then I may skip all the in-between OSs from Microsoft and go directly to a 64 bit Windows 7. I know that there are many (and much better systems) than Microsoft, but at 74 years old, I don't feel like taking the time and effort to learn them well enough to set up. My son will set up a system for me and I can just do the migration. I would much rather stay with RT-11, but I don't believe that it can do a reasonable job with e-mail, if at all. PLUS, under that 64 bit Windows 7 system, RT-11 running under Ersatz-11 has a speed of about 150 times a PDP-11/93. Jerome Fine

13 years, 9 months

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TRS-80 Model I

by dgy＠einfo-net.com

Anyone near N.E. PA interested in buying my TRS-80 Model I? -Dave

13 years, 9 months

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TI Microlaser toner, Netware books

by ray＠arachelian.com

While cleaning up, I found some toner for the TI Microlaser. (I no longer have the printer as it died a long time ago.) Also have some Netware books. Contact me off list if you're interested.

13 years, 9 months

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Anyone with a manual or repair reference for Corvallis Microtechnology (CMT PC-5) (pc5-eb)

by barythrin＠gmail.com

I'm not easily finding any good references to repair/disassembly for these PC-5 systems. They're a hand held computer that apparently has a minimal dos 5.0 load and an 8088? chip so it's "compatible" with already compiled programs you could technically transfer to it via the serial port and kermit protocol (one I have works and counts 640K ram which is amusing) the other just makes a horrid buzzing noise when plugged into a power source. Obviously I'm guessing the battery or a cap is shot inside but was hoping to look at some guide to repairing these. Unfortunately most of what I find leads to the fairly nondescript corvallis website which no longer references these units and certainly seems like they used to just have you ship them the unit and fix it for hundreds of dollars. Anyone play with one of these? This http://www.cmtinc.com/techhelp/pc5faq.html is pretty much the most information I've come across so far but nothing really about the insides. They have an ftp I looked briefly through but it also seems to concentrate on using the newer models and not anything regarding repair that I could find. Really I would think they'd have something somewhere on replacing the battery as an FRU but perhaps they weren't intended to be field replaceable? It seems like it was popular with folks doing geological and forestry studies. Certainly looks more like something you'd find in a warehouse than a home though.

13 years, 9 months

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Mr. Iam Primus

by rampaginggreenhulk＠yahoo.com

remember this post? --- On Sat, 5/1/10, Chris M <chrism3667 at yahoo.com> wrote: >? Also picked up a big huge square HP monitor. Don't know > the part # offhand, but has a datecode of 1984. First time > I've seen one of these. And I've seen a lot of monitors. I'm > sure I'm hoping in vain that it takes digital rgb. Awesome score! I've been looking for one of those for years. It's a fixed frequency analog RGB monitor, and was used by several flavors of workstations (IBM, SUN and HP, I do believe). Awesome picture on that thing. -Ian Strange for me to be asking you, but if you know what kind of monitor this is, and have specific details (scan rates preferably, digital or analog inputs), I would greatly appreciate it. Strange that I didn't provide the model number (this much distinguishes it from every other workstation monitor I've seen, it's a big burly rectangle), but it might be for the same reason I can't get to it now, it's buried, and very heavy, and I got no business lifting anything really. I'll get to it soon though. ?God I hope it's an early digital monitor. I plugged something into it before I buried it, and even the tech who I bought it from said he didn't get any positive results from it. I know I'm a goon. This I know.

13 years, 9 months

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to the gentleman w/gobs of 7220s, please send me a private

by rampaginggreenhulk＠yahoo.com

with your requested price and location.

13 years, 9 months

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multi-layer circuit boards

by rampaginggreenhulk＠yahoo.com

are you supposed to be able to tell just by looking at them if they have multiple layers? Assuming you have one w/multiple layers, and I guess I already know the answer, it's a huge headache to try and draw up schematics (or duplicate the artwork rather) w/only photographs of the top and bottom of the board? You'd need knowledge of the ic's, which isn't that huge a deal perhaps, being I'm questioning this w/regard to very standard ic's and glue. ?I want my APC back. I need to create copies of the cpu and disk controller cards. I don't have ready access to these. Each of these boards is nearly the size of a IBM 5150 mobo, so would it make sense that they are anything but single layer boards? And the APC had 2 video boards, each w/it's own pd7220. ?I got to find that yogi guy.

13 years, 9 months

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Selling AMT DAP 610

by rborsuk＠colourfull.com

Hi All, I'm interested in selling my AMT DAP 610 and I thought I would offer it up here first before ebay. Here's a quick pic http://www.borsuk.info/ebay/dap.jpg The unit is located in Port Huron, MI. 48060. I have a ton of manuals , software and even the Sun workstations that hook to it. I'm not giving it away but if you would like to shoot me over an offer I'm willing to talk. I'm unemployed right now and have been for the past couple of months so unfortunately I have to pair down some of my things. The DAP has been stored inside and I'm the second owner of it. Anyways, if anyone has an interest, please let me know. Rob Robert Borsuk rborsuk at colourfull.com Colourfull Creations http://www.colourfull.com

13 years, 9 months

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Surplus monitor

by kevenm＠reeltapetransfer.com

While cleaning up some, I've found I have an HP Monochrome Graphics Display E Ordering# D1181W Serial# 2919Y03783 pwr input CGA input (DB9 plug) about 19 lbs (plus packaging weight) If anyone has interest, $hipping cost only. Orem UT 84097 Keven Miller

13 years, 9 months

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Looking for schematics for Data General MV/4000 DC Power Supply

by tommie＠fox.se

Do any of you have the following schematics for a Data General MV/4000 DC (or MV/4000 SC or MV/7800 DCX): Modular Power Supply, part number 5 021847. This power supply is a 15 inch board and is probably used on other systems as well. 300 VNR module circuit board, part number 5 21838. The MV/4000 DC http://www.foxdata.com/blog/?p=702 Tommie Mademark My Data General blog: http://www.foxdata.com/blog/

13 years, 9 months

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Free TU80 tape drives

by doc＠vaxen.net

I have 3 DEC TU80 9-track drives that need to get gone. They are located in Austin TX and have been in storage since 2009. If you want them and can either pick them up, arrange to have them picked up, or pay for me to do so, they're yours. I would much prefer that they go as a set, but this beggar won't be choosy. Unfortunately, I need to dispose of them before September 24. I can no longer afford two storage units and that's the release date on the one that I'm closing. If nobody wants these drives, I'll have to scrap them. One was in fairly regular use until 2009, one other passed its internal diagnostics and tested good for read/write against the other at that time. The the plexiglas cover of the third one is broken and I never got around to replacing that so I've never powered it on. All three are in their original short racks. I have at least one Unibus controller and cable, maybe a couple of each, and a good handful of untested tapes with write rings. Doc PS - If you want the drives but can't pick them up before the 24th and are willing to pay a nominal amount on my storage until you can get here, we can work that out too. That's more a matter of "earnest money" than anything else.

13 years, 9 months

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which 8" drive are most likely to work w/a stock high density controller?

by rampaginggreenhulk＠yahoo.com

one other question - shouldn't it be relatively easy to write a program that recognizes another IBM pseudo compatible's MS-DOS format? If for instance you wanted to read NEC APC disks on a Canon AS-100. The Leading Edge Model M (fully peecee s/w compatible) tech ref manual states it not only can use quads but 8" drives. I forget the specifics, but it has an 8272/NEC pd765 (so does the NEC APC. Funny that the aftermarket board/5 1/4" drive set that I have for it uses a WD chip).

13 years, 9 months

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looking for an APC BBU/UPS 48VDC battery voltage, 220 AC, Don't need the batteries

by useddec＠gmail.com

If you have one please contact me off list. Thanks, Paul

13 years, 9 months

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Flippies (Was: Reading Floppies

by rampaginggreenhulk＠yahoo.com

that jig was later to become known as a nibble notcher. I still got mine. ------------------------------ On Tue, Sep 11, 2012 8:27 AM PDT Fred Cisin wrote: >On Mon, 10 Sep 2012, Jose carlos Valle wrote: >> I am curator of Museu do Computador, Brazil , Jose Carlos Valle >> Thera are 2 kinds of floppies an 360 kb and another in High density 1.2 Mb. >> But, with a tool, I cut a small hole at left floppy and I double the >> floppy. goes to 720 at total >> I have that tool in my Museu. > >Are you talking about a jig to modify a single sided diskette, so that you >can flip it over and use the other side as a single sided diskette? >(called a "flippy" disk) > >Are you just punching an additional write-protect notch (suitable >for Apple, Commodore, Atari) or are you punching an additional set of >index hole access holes? > >The first such jig that I'm aware of was sold by Don? French. >(sheet metal with tabs to hold the disk against) >The second one was the Berkeley Microcomputer Flip-Jig. >(plexiglass pocket jig) > > >-- >Grumpy Ol' Fred cisin at xenosoft.com

13 years, 9 months

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Cambridge Digital 11/73 system questions

by jplist2008＠kiwigeek.com

Greetings; I have a Cambridge Digital "94/23-70S" that I'm trying to bring back to the land of the living, filled with cards I can find little information about. I was hoping someone might be able to point me in the right direction. QBus cardcage with: Chrislin Industries CI-1173-EDC Emulex SU0210401 Technical Magic Inc 4S I think it's fairly clear the Chrislin is an 11/73 SBC, I know the Emulex is an SMD controller, and the 4S is a four-port serial card. I can't find manuals on either the Chrislin or the Emulex, and although I can't find a manual specifically for the 4S 4-port serial card, BitSavers has one for its bigger brother - the 8S 8-port card. Hopefully they're close enough. System also comes with a CPI tape drive (BY5A3-B) and an 8" Fujitsu M2312K. I'd really like some PSU pinouts so I can test it prior to plugging the cardcage in and seeing if it works. The boards are also covered in a fairly thick layer of mold, which is something I'm not used to seeing. Trying to decide what I can use to safely clean them - possibly Isopropyl, a QTip and some patience. Any help would be greatly appreciated; - JP

13 years, 9 months

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Reading Floppies

by cool1＠thecoolbears.org

Hey Everybody, Is there anybody in the San Francisco Bay Area that could create images of three 5.25" floppies for me? I think that they are 720k with 256 byte sectors, but I'm not sure. In any case, I've not been able to read them so far.

13 years, 9 months

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Bill Moggridge died

by evan＠snarc.net

>>> I'd be curious to see any examples of prior art. >> Although not exactly the same, Kay's "Dynabook" concept would surely be closely related prior art. No, I meant prior art of clamshell designs. If I wanted merely prior art of a laptop computer, then there commercial examples before the Compass, such as the Husky Hunter (1981). Beside, and as you noted, Dynabook is only a concept. Not to insult PARC, but you might as well have cited something from Star Trek.

13 years, 10 months

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DOS era chatterbot nonsense-generator

by fjkraan＠xs4all.nl

>> >> The basic patter of this program was to ingest text, mix it up, and >> emit >> something that sounds like the original, but turned into a word >> salad. >> Using a Shakespeare play and something from Ian Flemming as input >> files >> would result in stuff that looks like a Shakespearean spy thriller >> to >> varying degrees depending on how you set the input proportions. > Waffle? (http://www.simple-talk.com/dotnet/.net-tools/the-waffle-generator/) Fred Jan

13 years, 10 months

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DOS era chatterbot nonsense-generator

by dgriffi＠cs.csubak.edu

I'm trying to remember and locate a chatterbot program from the heyday of DOS. I think it was called "jabber". What made it particularly interesting is that you could feed three text files of stuff (like novels, scientific papers, etc) and then control the proportions of how much of each input file made it to the output. When all were set to zero, it would just emit "jabber" over and over. Google isn't particularly helpful in finding this. I'm getting false hits on the Jabber IM protocol and denial of service attacks. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

13 years, 10 months

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Kaypro PC ? == Micro 1

by dflowers＠gmail.com

I don't know if anyone is still interested in this. I have a Kaypro Micro1 with monitor and keyboard. It has a 10 MB hard drive and runs on MS DOS 5.0 and Windows 3.1. It has 2 3.5" floppy drives. I've never seen another one anyplace. Dave

13 years, 10 months

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68k Mac diagnostics?

by fraveydank＠gmail.com

Hello all, I have a Quadra 700 which I've mentioned before which is in a poor state. I've finally gotten it to power on with a replaced power supply, but it dies with the chimes of death at various points before and after the boot chime; it never appears to initialize the video. I'm aware that the Q700 is quite reliant on the monitor sense pins, so I'm using an Apple 12" RGB monitor that I've verified working on an Apple IIgs. Since I can't see any video (there is no activity on any of the pins on the monitor port, not even sync pins), I'm wondering if there's another diagnostic tool that can be used aside from building something to hook into the '040 PDS and attach to a logic analyzer. I suppose it would be too much to hope that it can be made to spit something out on a serial port? The fact that the chimes come at different points in the process, and that it seems to change when I poke things on the board, leads me to believe it may be beyond help, but if there's something simple I can do to check it out, I'd be glad to. I've already tried swapping out for a known-good '040 and removed all the RAM (so it runs on internal RAM) to no avail. - Dave

13 years, 10 months

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DOS era chatterbot nonsense-generator

by feldman.r＠comcast.net

>Message: 20 >Date: Mon, 10 Sep 2012 20:36:52 +0100 (BST) >From: ard at p850ug1.demon.co.uk (Tony Duell) > >I remember an article in Byte about soemthing a bit like this. The word >'Travesty' is coming to mind, but I am not sure why. But I thought that >only took one input file and amy a piece of 'similar' text from it. > >-tony Byte, V9 No12, November 1984. Also at http://www.scribd.com/doc/99613420/Travesty-in-Byte Bob

13 years, 10 months

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Reading Floppies

by cool1＠thecoolbears.org

> > Is there anybody in the San Francisco Bay Area that could create images of > > three 5.25" floppies for me? I think that they are 720k with 256 byte > > sectors, but I'm not sure. In any case, I've not been able to read them so > > far. > > 1) Do you know what computer created them? > > 2) FM? MFM? GCR? (Sirius/Victor 9000?) > > 3) What have you triesd so far? > What messages do you get? > The difference between "General Failure" and "Sector Not Found" IS > significant. I believe that they were created on an OS-9 68000 (the Microware, not the Apple variety). I don't have the computer any more, just the floppies. I tried to image them. If they are what I expect them to be, then they would be 720k MFM. I've tried to read them with a 1.2M 5.25 drive, using fdutils, on a LINUX box, but I'm not sure that I've got my drive strapped to spin at the correct RPM. In any case, fdutils reports an error 40. I'm not sure that the hardware I'm using will even talk to a 720k floppy.

13 years, 10 months

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NEC APC 8" computer

by concad＠wwt.net

Hello, Found an old post. We have one with all software but no user manual. Do you know if any exist on PDF? Regards, Jerry

13 years, 10 months

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Why 'park' drive heads

by elson＠pico-systems.com

> From: Alexey Toptygin <alexeyt at freeshell.org> > So, what drives actually need to be 'parked'? My understanding was that if > you de-energize the spindle motor and the voice coil that positions the > heads and the same time, the heads will have plenty of time to retract and > lock before the platters slow down enough for the heads to land. Was it > only needed on drives that used stepper motors for head positioning? > Either way, in what technology generation and/or time frame did the > requirement go away? > Most drives today either have springs, aerodynamic forcers (wings) or extract energy from the spindle motor to send the heads to the park position. Still, landing the heads on the platters is a lot harder on them that lifting the heads like in the "old days". I've seen plenty of drives where the heads were WELDED to the platters by old head lube that had either degraded over time or spread from the landing zone to the rest of the platter. Not sure if they are still using that landing zone lube or not. Anyway, all drives that are supposed to be parked can be assumed to handle it autonomously when power is removed, for nearly the last 20 years. Jon

13 years, 10 months

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DECwriter II LA36 being given away

by Gary＠realtimecomp.com

________________________________ From: cctalk-bounces at classiccmp.org on behalf of Tony Duell Sent: Fri 9/7/2012 5:15 PM Subject: Re: DECwriter II LA36 being given away >> I'm looking for a couple of keys for mine, If you end up parting it out, c= >> ould I get the R and X keys from it? >I would rather a complete machine was not parted out, not even an LA36 :-) > >Somewhere I have a lot of LA36 bits. I probably have a keyboard PCBm adn >could remove keycaps if you cna't get them any other waye. Aren't they >the same as VT100 keycpas? The keyboard is much the same design. I agree, and would not wish him to part one out. However, if the alternative is that he's going to send it to the scrapper.... Also, I don't believe the key caps are the same as the VT-100. If you get a chance, and have a spare KBD assembly, I'd be interested! Gary

13 years, 10 months

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DECWriter II LA36 being given away - Update

by corey＠electricware.com

The DECWriter II has been picked up. Thanks to all who replied. There were 5 replies which makes me glad I saved it from being thrown away. Thanks, Corey.

13 years, 10 months

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Hard-drive diagnostic program

by Hollandia＠ccountry.net

Will someone name a program that will do "checkup" on a hard drive, that could warn of an impending failure? Thanks, Kurt

13 years, 10 months

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cctalk delay?

by chrise＠pobox.com

Curious what causes a several day delay in mail getting out of classicmp.org? I typically see people's replies to postings other have made a day or more before I see the original posting. Postings about gear for sale or trade show up long after the gear is gone. What causes the bottleneck? How do some people see postings and are able to reply to them while some of us incur the delay? One example, Received: from huey.classiccmp.org (huey.classiccmp.org [209.145.140.19]) by azure.pobox.com (Postfix) with ESMTP id 71DCC40A3E8; Mon, 10 Sep 2012 08:59:51 -0400 (EDT) Received: from huey.classiccmp.org (localhost [127.0.0.1]) by huey.classiccmp.org (8.14.4/8.14.4) with ESMTP id q8ACxGmi065486; Mon, 10 Sep 2012 07:59:16 -0500 (CDT) (envelope-from cctech-bounces at classiccmp.org) Received: from billy.ezwind.net (host-209-145-140-29.ezwind.net [209.145.140.29] (may be forged)) by huey.classiccmp.org (8.14.4/8.14.4) with ESMTP id q88MpUSX042100 for <cctalk at classiccmp.org>; Sat, 8 Sep 2012 17:51:30 -0500 (CDT) (envelope-from mc68010 at gmail.com) Received: from mail-pz0-f51.google.com (mail-pz0-f51.google.com [209.85.210.51]) by billy.ezwind.net (8.13.8/8.13.8) with ESMTP id q88MpNgW039919 for <cctalk at classiccmp.org>; Sat, 8 Sep 2012 17:51:29 -0500 (CDT) (envelope-from mc68010 at gmail.com) Received: by dajt11 with SMTP id t11so765659daj.38 for <cctalk at classiccmp.org>; Sat, 08 Sep 2012 15:51:23 -0700 (PDT) The mail was received at huey.classiccmp.org on Sat, 8 Sep 2012 17:51:30 -0500 (CDT) but then didn't move to the next step at huey until Mon, 10 Sep 2012 07:59:16 -0500 (CDT) Not intending to bash anyone or anything here-- just wanting to understand the issue. Chris -- Chris Elmquist

13 years, 10 months

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Century Data Systems binders available

by p.gebhardt＠ymail.com

Hello everybody, did some cleaning this weekend and it turned out that I had some duplicates of CDS Trident Series disk drive binders. Contact me, if you're interested in them, I give them away. For pick-up or I can send them, if you pay the shipping costs. I'm located in Germany. documents list: 76200-202 : Models T200 & T300: Installation & Operation 76200-400?: Models T200 & T300: Field Parts Catalog 76205-005 Rev3?: Models T25, T50, T80 Field Parts Catalog 76203-101 Rev1: Model T2000B: Exerciser Technical Manual Model T80 :schematics & logic, book 1/2 Model T300 :complete schematics & logic (twice of this one are available) Please contact me off-list. Kind regards, Pierre ------------------------------------------------------------------------------- Pierre's collection of classic computers : http://classic-computing.dyndns.org/?

13 years, 10 months

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DEC MS11-J (MOS memory) question

by lists＠loomcom.com

Here's a puzzler. One of the two memory boards from my PDP-11/35 is short four ICs. See: http://www.loomcom.com/projects/pdp11-35/ms11_j.jpg It looks like it was an 8KW board that was user-expanded to 16KW, and if I'm reading the switches correctly it was configured for starting address 000000. (The other 16KW board I have is configured to start at address 100000) Those four missing ICs seem weird, though. The other board is is fully populated. Were they just pulled before the PDP was trashed? Or is that a valid configuration? -Seth

13 years, 10 months

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OT: Does anyone have the need for...

by rich.cini＠verizon.net

All -- I'm trying to clear unneeded gear from my shop and I have the following three somewhat modern pieces of server hardware available to a good home. I'm just tripping on them so they need to go. * Compaq ProLiant PL1600 5U rack server. Dual Pentium 3 with 6-drive integrated RAID (86gb). Boot hard drive is bad (9gb SCSI). With some spare parts/rack stuff. I used this as one of my first servers in my house before I shifted to NAS and micro-servers. Great machine until the boot hard drive bit the dust?ran Windows NT Server then Windows 2000 Server. * Snap Server N4100. Early NAS RAID. 1U rack size. 4-drive/750gb. Works fine but has inter-operability issues with XP/Vista/7 (due to change in SMB authentication protocol I remember reading). Missing front faceplate (may be in the shop somewhere). * Sony AIT-162 16-tape AIT2 library (16x50g uncompressed). 2U rack size. Comes with tapes/bar code labels. I have the software somewhere. Worked the last time I used it but when the server died I changed everything around. Because of the size/weight, it would be pickup only from Nassau County, LI (11791). If anyone's interested, please contact me off-list and we can arrange something. Thanks! Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.classiccmp.org/cini http://www.classiccmp.org/altair32

13 years, 10 months

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Wanted: DEC PDP-8/A power transformer and backplane

by bobvines00＠gmail.com

In the 01 Sep 2012, cctalk Digest, Vol 109, Issue 1, Topic #2, Brenton Bryant wrote: "Recently I found an incomplete PDP-8/a and need the transformer and backplane to start working on it. If anyone has one or both then please let me know." What type of (incomplete) you PDP-8/A do you have? The power supply is different for the core vs. semiconductor memories and different backplanes used in these machines. There are three different power supplies available, depending on the backplane and the memory. The chassis you have should have a label telling what it is. The PDP-8/A uses the ?76? Power Supply AssembIy which includes: ?9192 Omnibus (10 module slots) G801? Power Supply Module (Semiconductor Memory) Power board Transformer AssembIy Line Set Operator's ????l The PDP-8?100, 8?400, 8?600, & 8?800 use the ?9?00 Chassis AssembIy which includes: ?9194 Omnibus (12 slots) G8016 Power Supply Module (Semiconductor ??????) OR G8018 Power Supply Module (Core ?emor?) Transformer AssembIy Line Set Operator's ????l The PDP-8?420, 8?620, & 8?820 use the ??8-? Expander Chassis AssembIy which includes: ?9195 Omnibus (20 slots) 2 G8018 Power Supply Modules (Core Memory) Transformer AssembIy Line Set Operator's ????l Power Distribution Assembly The above information is from the "PDP8A Minicomputer Handbook 1976-77." (http://www.bitsavers.org/pdf/dec/pdp8/handbooks/MinicomputerHandbook_1976.p…) Paul Anderson *may* be able to provide what you need -- he had a PDP-8/A chassis available at the end of last year and it *may* have what you need (i.e., power supply & backplane). So, what (incomplete) model PDP-8/A do you have? Thanks, Bob

13 years, 10 months

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DEC module handles stampings and revisions

by chd＠chdickman.com

Does anyone know how to interpret the letters stamped on the side of DEC module handles? I remember reading that these were FCO and/or Revision marks, but can't find the reference any more. -chuck

13 years, 10 months

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DECwriter II LA36 being given away

by Gary＠realtimecomp.com

>From: cctalk-bounces at classiccmp.org on behalf of Corey Anderson >Sent: Fri 9/7/2012 2:45 AM >If nobody is interested in the whole thing and wants parts only, I will consider >parting it out and shipping things at your expense. > >Contact me if interested and want pictures or more info. Corey, I'm looking for a couple of keys for mine, If you end up parting it out, could I get the R and X keys from it? Gary Gary at Realtimecomp.com

13 years, 10 months

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Supposed eBay "PDP-8/S" listing...

by lbickley＠bickleywest.com

I contacted the seller of item #200814830163 "Vintage Computer Equipment / Pertec T6840-9-45 U2 / DEC PDP8/S Digital Equipment" and asked that since I didn't see a PDP8/S in any of the pictures if one was included in the auction (per the description). Here is the seller's reply: "This auction is not for the PDP8/S (no PDP8/S included), but this is part of the PDP8/S equipment. Comparable Example: 1997 Ford Explorer / O2 Sensor / Oxygen Sensor Thanks for your interest, and good luck with your bidding!" It is highly unlikely (impossible?) that a slow PDP-8/S would have peripherals as such as two RK05's and a PERTEC 6840. Sigh.. Cheers, Lyle -- Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

13 years, 10 months

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DECwriter II LA36 being given away

by corey＠electricware.com

I recently rescued a DECwriter II (LA36) that needs a good home. I personally never used it, I merely saved it from being sent to landfill. It does have some yellowing to it, but other than dust and spider webs, appears to be in good shape. It has all its keys and the tractor feed and the carriage all move. I have not tried to plug it in. I collect Teletypes so I just couldn't stand the thought of this being tossed, thinking that someone out there would probably want it. If interested, it's yours. Otherwise it's going to be summarily recycled. I am not really interested in trying to ship it since I'd have no idea how to. I'd be willing to drive a little to help it find a home, but not more than 50 miles. I live in the Portland, Oregon area. If nobody is interested in the whole thing and wants parts only, I will consider parting it out and shipping things at your expense. Contact me if interested and want pictures or more info. Thanks, Corey.

13 years, 10 months

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Kaypro PC ? == Micro 1

by feldman.r＠comcast.net

>Message: 25 >Date: Fri, 7 Sep 2012 11:55:13 +0100 >From: Liam Proven <lproven at gmail.com> > >On 7 September 2012 08:38, Jason T <silent700 at gmail.com> wrote: >> Interesting - that was an 8086 machine IIRC. Or am I forgetting that >> an XT could run Win 3.1? > >I am trying to remember if there was a magic incantation to get it to >start if you had an NEC V30 chip or something, but I am not at all >sure. I suspect that for an actual Intel 8086, Windows 3.0 was the >latest - and you still couldn't run in VGA mode. (You only got VGA if >you had an NEC V30; the VGA driver used 286 instructions.) > You are limited to Windows 3.0 or lower on a 8088, 8086 or 80186. Windows 3.1 dropped Real Mode support, so it needs an 80286 or better. I have run Windows 3.0 on a Poqet (8088) and HPLX 200 (80186) using the CGA drivers. Bob

13 years, 10 months

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booting RSTS-11

by bqt＠update.uu.se

On 2012-09-06 08:48, B M<iamvirtual at gmail.com> wrote: > > I managed to get RSTS-11 (circa 1974) installed on an RK05 drive for my > PDP-11/10. The M873-YA bootstrap loader does not seem to be able to boot > the disk. > > I can boot the drive via a manual bootstrap routine. > > I saw on a site that some bootloaders will refuse to boot a drive unless > the first byte is 240(8). On RSTS-11, the first byte is 300(8). > > Any ideas why the bootstrap card is picky? That's a way to try and protect you from booting random garbage. On some newer PDP-11s you can disable that check if you want to. Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

13 years, 10 months

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Hard-drive diagnostic program

by Hollandia＠ccountry.net

Hi again, A program that I was sent long ago gave the following info for the drive I am thinking of: Read Hard Disk Parameters Copyright 1995, Sydex, Inc. All Rights Reserved. An AT controller was found For ESDI/IDE Drive 0: Cylinders 2358 Heads 16 Sectors/Track 63 Buffer Size 64K Total Sectors 2376864 Drive supports DMA Drive supports LBA Firmware Revision: 99C60LE7 Model Number: IBM-DPRA-21215 Serial Number: 1L47L4V2902 It is operated under DOS 5 and Windows 3.1. The drive does the same thing in Windows and in DOS. I don't know who has encountered the Commodore 1541 drive. Thise who have will recall the hammering noise it made at turn-on and also when it encountered a difficulty with a disk it was reading. The drive under consideration is, I think, doing the same thing. It periodically makes a noise that sounds like an impact. This noise is being encountered with increasing frequency; I wonder if the the drive is headed for a failure. I have other drives I can put in its place, if need be. I don't understand the reference to "popcorn"...what is the meaning here? Thanks, Kurt

13 years, 10 months

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OLD Sony Trinitron Monitor Problems

by jhfinedp3k＠compsys.to

I am still using a Sony Trinitron Multisacn E400 Monitor with a ten year old system. When I first boot the computer in the morning, the monitor manages to support normal boot operations (I use 1280 by 1024 as a standard pixel setting). But if another full screen window is used, the monitor will cut out in a manner I don't know how to describe - other than it stops all display. The simple solution is to power off, then on and I have been doing this for the past two months. I realize that with a ten year old (or perhaps older) monitor, it will eventually have to be replaced or repaired. The latter option is almost certainly NOT cost effective since I have neither the tools nor the knowledge to do the repair myself. I do have two questions: (a) Is there any possibility of either damage to the other components or even myself if I continue to use the monitor until it completely fails? (b) Is there any point in waiting 15 minutes (approximately) that the monitor seems to need to warm up completely to prevent the problem in the first place, i.e. will preventing the problem from happening by providing enough time for the monitor to completely warm up prolong the limited expected life of the monitor at this point? Any other comments would be appreciated, especially in respect of questions that I do not know to even ask. Jerome Fine

13 years, 10 months

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IBM 3494 Tape Library

by wackyvorlon＠me.com

The university I attend, University of Windsor, in Windsor, Ontario, Canada has an IBM 3494 tape library they are planning to get rid of. I was wondering if anyone on this list would be interested, if it doesn't find a new home it'll be going to the electronics recyclers. The machine is very big, and is in working condition. It won't be coming with any tapes, the tapes that are in it right now will be destroyed. If you're interested, let me know and I'll put you in touch with the relevant people. -------- Paul Anderson -- VE3HOP

13 years, 10 months

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booting RSTS-11

by iamvirtual＠gmail.com

I managed to get RSTS-11 (circa 1974) installed on an RK05 drive for my PDP-11/10. The M873-YA bootstrap loader does not seem to be able to boot the disk. I can boot the drive via a manual bootstrap routine. I saw on a site that some bootloaders will refuse to boot a drive unless the first byte is 240(8). On RSTS-11, the first byte is 300(8). Any ideas why the bootstrap card is picky? Thanks! --barrym

13 years, 10 months

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