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101090 discussions

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, 7 months

"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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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

by rampaginggreenhulk＠yahoo.com

with your requested price and location.

13 years, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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