test-drb

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101090 discussions

Hans Camenzind, Inventor of the 555, dies.

by charlesmorris800＠centurytel.net

On Aug 17, 2012 at 12:47, David Riley wrote: > On Aug 17, 2012, at 12:40 PM, Chuck Guzis wrote: > > > On 17 Aug 2012 at 9:15, Fred Cisin wrote: > > > >> It shouldn't be so hard, with XP and a Winmodem, but it'll be a few > >> days before I can get back to a decent connectin. > > > > I could download and write the article to a 9-track tape and mail it > > to you.... > > I'd really prefer a stack of 80-column cards, please. My tape drive > is on the fritz. Could you please provide me a copy on ASR-33 paper tape? :) -Charles

13 years, 8 months

X Window server for NEC 7220

by LYNCHAJ＠yahoo.com

Hi Does anyone know of an X Window server implementation for the NEC 7220 GDC? The chip has several names including the Intel 82720, NEC 7220A, NEC 7220D, uPD7220, uPD72020, etc. Essentially this graphics chip was the main rival to the MC6845 prior to the domination of the IBM PC architecture for microcomputers. The NEC 7220A is most notably known for the NEC APC and Epson QX-10 however was used in a number of other systems. Typically it was used for CAD type graphics and/or business graphics as its main strength was drawing primitives like lines, circles, rectangles, etc rather than BITBLT operations. I would imagine an X Window server for the NEC 7220 would suffer in comparison to today's graphics boards. However I think it would be comparable to non-accelerated VGA and/or VESA modes which both have X Window server implementations. Thanks and have a nice day! Andrew Lynch, 73 de N8VEM

13 years, 8 months

PXG/PXG+/PXG Turbo/PXG Turbo+ boards for DECstation 5000

by legalize＠xmission.com

Does anyone have one of these boards? They are derived from research at UNC on Pixel Planes. <http://en.wikipedia.org/wiki/Decstation#Graphics_3> -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

13 years, 8 months

PPS 4/1

by orgwood＠iaxs.net

Did you ever get your info on this series? I was a Rockwell rep and have it plus I bought a few Mattel games for my kids too! Original Woodworks 4631 Lake Ave., White Bear Lake, MN 55110 By appointment only! (651) 429-2222 www.originalwoodworks.com orgwood at iaxs.net

13 years, 8 months

32-bit code in 16 bits

by dgriffi＠cs.csubak.edu

Is there anyone here who understands 16-bit DOS coding well enough to help me make some 32-bit code work in 16-bit DOS? -- 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, 8 months

3483

by BHuntsman＠mail2.cu-portland.edu

Sorry for the noise, but just curious, anyone have an IBM 3483 terminal they'd be willing to part with for reasonable consideration?? Thanks! -Ben

13 years, 8 months

PDPs in the garage

by earl＠retrobits.com

Hi folks, I'm a little concerned about the load that my PDP-11 cabinet (rack mount, dual RL02 drives) is putting on the floor in my daylight basement. Also, I'm thinking that recovering the space might be nice, so I was considering moving the PDP-11 system back to the garage. If any of you have a PDP or other big-iron systems in the garage, how do you deal with temperature extremes (hot in summer, cold in winter)? Do you simply not operate the computer when it's too hot or cold? Do you think it's a risk to even store the system in the garage? My location is Portland, Oregon, so it doesn't really get super cold in the winter. I think the coldest I've measured in the garage is 50F. But summer can get pretty warm. It's scheduled to get 85F today, and we had 100F a week or two ago. Of course the garage doesn't get as hot as outside temps, but it can get up there. I realize heat can be a big enemy of computers/electronics. Also, since the RL02 drives are mechanical and precision devices, they might not take well to temperature shifts. Thoughts? - Earl

13 years, 8 months

need docs for Canon AS-100

by rampaginggreenhulk＠yahoo.com

And other lesser known lesser known intel boxes/pseudo compatibles

13 years, 8 months

Remaining S-100 board PCBs

by LYNCHAJ＠YAHOO.COM

Hi The last couple weeks have been pretty good. I can see the bottom of the stack of S-100 board PCBs and will be ordering some more new boards and additional reorders soon. There are two S-100 Serial IO board and five S-100 8088 CPU board PCBs left. They are $20 each plus $3 shipping in the US and $6 elsewhere. Please send a PayPal to LYNCHAJ at YAHOO.COM and I will send your boards right away! Thanks to John Monahan for all his dedication in making these PCBs possible for the S-100 hobbyist community. Both the S-100 Serial IO and S-100 8088 CPU board PCBs have been built and tested repeatedly and are known working units. Thanks and have a nice day! Andrew Lynch

13 years, 8 months

OT: Re: Hearing (was Re: HP3000 Marketing Collateral)

by feldman.r＠comcast.net

<Message: 6 <Date: Tue, 14 Aug 2012 17:47:43 -0700 <From: "Chuck Guzis" < cclist at sydex.com > < <snip> <So, does anyone know of any publicly-owned hearing aid manufacturers? <Looks like a growth industry... < <--Chuck <(with some ringing in his ears) The best manufacturers are German or Swiss: Phonak, ReSound and Siemens. I recently got hearing aids and find them both amazing and annoying. Amazing in how small they are (less than a cm^3 in volume, including the battery). The best now have digital equalizers that can adjust the amplification across a dozen or more frequency ranges and can automatically adjust to filter out background noise. They can also be controlled wirelessly -- mine even have an "airplane" mode the shuts off the wireless when you are flying in an airplane and electronic devices are banned. Annoying in that they are far from perfect and require a new set of batteries after every 75 hours or so of use. For any of you who live in the US, the least expensive place to get good hearing aids is Costco. Most insurance plans do not cover them, so my cost was $2600 for the pair, which is 30%-50% less than anywhere else charges for a similar model. Bob

13 years, 8 months

To all with interest in preservation

by cctech＠beyondthepale.ie

> >Every time I'be both seem an emulator of a chassic machine (runinng on a >friend's machine, obvious) and also run the rela hardware myself, I feel >the emultor doens't come close to the experinece of actually running the >classic computer. > Before I came across Hercules, I tended to dismiss emulators in the same terms. However, I find the experience of using Hercules or Simh remarkably close to the experience of using the actual machine in question. Many users of certain classic computers never saw or heard the actual machine they used and only interacted with it through a terminal (or even a terminal emulator). There are also other factors which prevent both emulators and real preserved hardware from recreating the original experience. Factors such as not having a real world workload to process and not having a realistic number of users working the machine hard (as opposed to a few museum visitors at a time trying to figure out valid commands). (I don't know why I am adding to this thread which looks destined to go on and on and achieve little except to demonstrate that different people have different ideas on how things should be preserved and that most are not going to change their minds.) Regards, Peter Coghlan.

13 years, 8 months

DEC Server 300

by holm＠freibergnet.de

Hi, a friend of mine sent me an DEC Server 300 which he saved from the dumpster. There is a triangle in the bottom that some sharp metall edge must have made. This hit broke a 300mil 24pin DIL chip in the inside that must be related to the BNC network. The Chip is located next to the 20MHz Crystalnext to the poushbutton Switch, it is broken in two halves and the ceramic top plate of the chip is missing. It seems that the pcb survivied, so here comes the question: What was this for an (Network-)chip? Can please someone help? Kind Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

13 years, 8 months

PDPs in the garage

by saquinn624＠aol.com

I used to worry about things like racks and half racks and floor load limits, but consider the following: Think about how heavy a rack is. Probably about 500lbs or so for most of our stuff (I'm not talking maxed-out S/390s or VAX 9000 installations), and there's probably one or two in a room. For the area of the rack, the load/sqft is similar to a 250lb person, which the floor is hopefully specced for. A small piece of 3/4" plywood underneath to keep the carpet happy is nice, bigger one if you're going to be pulling the rack in and out for connections to the rear. n.b. I do put my heavy stuff near the bearing walls so things are more straightforward.

13 years, 8 months

PDPs in the garage (Earl Evans)

by pechter＠gmail.com

> Message: 2 > Date: Tue, 14 Aug 2012 11:20:58 -0700 > From: Earl Evans <earl at retrobits.com> > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > Subject: PDPs in the garage > Message-ID: > <CAMDAk4d3sfqET1Rj3Yw45ctgg+2BLHr=aSvyVqBxnGurveNhHA at mail.gmail.com> > > Content-Type: text/plain; charset=ISO-8859-1 > > Hi folks, > > I'm a little concerned about the load that my PDP-11 cabinet (rack mount, > dual RL02 drives) is putting on the floor in my daylight basement. Also, > I'm thinking that recovering the space might be nice, so I was considering > moving the PDP-11 system back to the garage. > > If any of you have a PDP or other big-iron systems in the garage, how do > you deal with temperature extremes (hot in summer, cold in winter)? Do you > simply not operate the computer when it's too hot or cold? Do you think > it's a risk to even store the system in the garage? > > My location is Portland, Oregon, so it doesn't really get super cold in the > winter. I think the coldest I've measured in the garage is 50F. But > summer can get pretty warm. It's scheduled to get 85F today, and we had > 100F a week or two ago. Of course the garage doesn't get as hot as outside > temps, but it can get up there. > > I realize heat can be a big enemy of computers/electronics. Also, since > the RL02 drives are mechanical and precision devices, they might not take > well to temperature shifts. > > Thoughts? > > - Earl I could tell you a story about an 11/780 at Fort Monmouth that ran without air conditioning and with the windows upen for 3 months. Serious intermittant problems sprung up. The humidity had rust on the TU45 tape drive motors. The problem isn't heat -- it's the rate of change. You get serious expansion cracks in the boards when the etches expand and contract. The faster the rate of change in temporature when running (both up and down) the worse the issue. The machine was flaky as hell. The thing would crash VAX/VMS about 5 times daily. I actually would boot the machine and hit each one with my little brass hammer. If it crashed... the board was replaced. Swapped about 6 boards in the data path and cache sections and the box was then stable for over three years. The 11/34's a lot lower in power draw and slower. It's probably less sensitive with some larger etches. I'd worry more about the peripherals. Disk drives with rusty parts in them are probably a bad thing. I know the tape drives would have a problem. The RL02's might even have a different flying height depending upon the temperature which could end in head crashes. If you kept the internal temp under 100 degrees you're probably ok... but if the outside temp's above 100... The real trick is to keep the temp as steady as possible. Perhaps strategic fan placement to keep it from getting too hot in certain places. Bill -- d|i|g|i|t|a|l had it THEN. Don't you wish you could still buy it now! pechter-at-gmail.com

13 years, 8 months

different types of monitor strain

by rampaginggreenhulk＠yahoo.com

I got a call from a man who has been in the development business since the 70s. We got to talking about a whole lot of stuff (actually it was more listening on my part then anything else). On the topic of eyestrain (?) he said that different colors (primary?) have different focal depths, so at least for some people strain is caused when looking at a color monitor w/fine dot pitch. I have to at least take him at his word on that, but when I mentioned that staring at green phosphors for an extended length of time (>30 minutes say) caused white to appear pink. For instance the numbers on a cars speedometer. He said he never experienced that. Can anyone explain the reasons for that? It stands to reason that causing your eyes to focus on something small? and multichromatic would cause strain (you're forcing your eyes to focus on a single point that in essence appears to be at varying distances. I don't understand the pink eye effect though.

13 years, 8 months

To all with interest in preservation (more)

by wdonzelli＠gmail.com

And I will add... > That is why simulators are so important. You can get most of the feel > of the machine from the comfort of your own home. ...and no vintage machines are harmed. -- Will

13 years, 8 months

Graphics programming on DOMAIN/OS (was: NeWS)

by legalize＠xmission.com

On Thu, 09 Aug 2012 13:33:41 MDT, Richard <legalize at xmission.com> wrote: > In article <50240091.9060108 at bitsavers.org>, > Al Kossow <aek at bitsavers.org> writes: > > > On 8/9/12 10:21 AM, Richard wrote: > > > > > I have been attempting to find details on the Apollo DOMAIN/OS > > > windowing environment before they started running X11, but so far > > > haven't been able to find much of anything. > > > > > > > There wasn't anything in the Apollo documents on bitsavers? > > Looks like it was pre-2009 that I last looked, when you added a bunch > of stuff. I will have to dig into that pile! "Programming with Domain Graphics Primitives" (005808-01)[1] makes reference to "Programming with General System Calls" (005506) which explains pad calls that allow you to create pads and frames. If this manual could be made available, that would be a helpful addition. [1] <http://bitsavers.org/pdf/apollo/005808-01_Programming_With_Domain_Graphics_…> -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

13 years, 8 months

HtG differential SCSI [was RE: To all with interest in IBM 7090]

by RichA＠vulcan.com

From: Dave McGuire Sent: Tuesday, August 14, 2012 1:33 AM On 08/14/2012 04:06 AM, TeoZ wrote: >> There was a brief hop to just differential SCSI (higher voltage then >> LVD which is how LVD got its name). HVD and SE/LVD don't like each >> other while the other SCSI standards did with some tweeking. > This overlapped entirely with SE SCSI to the end, though. HVD was > used in very high-end machines (Tandem and Cray come to mind) for the > better noise immunity for longer cable runs. It really wasn't a hop > from SE to HVD then to LVD. Also the XKL Toad-1 System (4 x differential FASTWIDE SCSI-2 ports). An absolute bear to find drives for. 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, 8 months

HP3000 Marketing Collateral

by michael.99.thompson＠gmail.com

> Date: Mon, 13 Aug 2012 22:33:52 -0500 > Subject: Re: HP3000 Marketing Collateral > On Sun, Aug 12, 2012 at 2:13 PM, Lee Courtney > <charlesleecourtney at yahoo.com> wrote: >> I posted some 1980's vintage HP3000 marketing shots at Flicker: http://flic.kr/s/aHsjBmrAyC >> >> Enjoy! The Rhode Island Computer Museum has an HP3000 Series 70, just like in one of your pictures. Too bad we don't have that many disk drives to go with it. https://sites.google.com/a/ricomputermuseum.org/home/Home/equipment/hp3000-… -- Michael Thompson

13 years, 8 months

Fwd: [DatapointComputers] Datapoint 1560

by axelsson＠acc.umu.se

I thought this could be interesting for members on the list. Too bad it's too far away for me. /G?ran -------- Ursprungligt meddelande -------- ?mne: [DatapointComputers] Datapoint 1560 Datum: Tue, 14 Aug 2012 18:21:24 -0000 Fr?n: techiegabe <gabehabib at rogers.com> Svar till: DatapointComputers at yahoogroups.com Till: DatapointComputers at yahoogroups.com I finally got around to unpacking a Datapoint 1560 system that has been lying around in my basement crawl space since the late 80's gathering dust. After a good cleaning and resetting of boards and connectors it looks in great shape, BUT the Monitor "Sparked and Smoked" when I turned it on. I haven't turned on the disk subsubsystem yet. Anyways, I am able to take it with me when we head down to Wickenburg AZ, for the winter, and wondering if that Computer Museum (or anyone else) may want to give it a new home? I'm still looking for the Diskettes and Manuals. I also have a MINX Monitor. Gabe x-Datapoint Canada Inc.

13 years, 8 months

Slight-OT: DynaText readers?

by wulfcub＠gmail.com

I'm trying to retrieve some old printer manuals from a 1999 CD-ROM, and they are supposedly DynaText. The problem I'm running into is that DynaText 4.1 doesn't recognize a valid collection. The installer on the CD looks for dynatext.ini and books.ini (which doesn't seem to exist anywhere, including on the CD). It wants these files to come >from Xerox\ODOC\ .The installer fails without both of those files present. If I point it to a valid dynatext.ini, and fake a books.ini or give it an empty file, the installer completes "successfully" having done nothing. The 'books' directory contains a subdirectory with the book name (41354635 in this case). This directory then contains four more directories, EBT, INDEX, STYLES, and FIGURES, as well as a Setup.ini file with a few lines of information on the collection. 'Figures' is a collection of TIFF's. 'Index' contains index.dat and vocab.dat. The EBT directory contains 5 files: 41354635, 41354635.edr, 41354635.tag, search.tdr, toc.tdr. Google turns up almost nothing on these file extensions. The 'Styles' directory has several .v and .rev files, carrying copyright information bearing the name Electronic Book Technologies (thus EBT). EBT as a company is long gone. Most of the various book files are encoded (that is, not plain text), though each has an ASCII header. 'EDIR DATA' 'EDIR EDIR' 'EDIR TDIR' and 'EDIR TAGS' (this file is plain text). Anyone have any clues on how to read these files? So far, I've tried so far: Adobe FrameMaker (trial), Adobe Acrobat Pro 9, Altova StyleVision (trial), DynaText 4.1. Thanks! --Shaun

13 years, 8 months

free book Voice Technology 1983

by rampaginggreenhulk＠yahoo.com

For shipping. Ill need a check.

13 years, 8 months

To all with interest in IBM 7090

by jonas＠otter.se

On Mon, 13 Aug 2012 20:01:41 +0100 (BST), ard at p850ug1.demon.co.uk (Tony Duell) wrote: > I am going to define 'London' as the area I can get to with a London bus > Pas (I do not mean the 'City of London', I mean an area about 30 miles by > 30 miles. In 'London' I know of preceisely_one_ shop tht sells a > reasoanble range of electronic components [1]. I know of no shops that > will sell me small-ish qunatiites of common engineering metals (say 1m of > 1/2" diamaeter CZ121 bras rodd, or similar free-machining mild steel). I > know of no shop that sells 'engineering' tools (lathe and mil lcutting > tools, individual sockets, spanenrs, etc). That sucks. I can get all of that in a town less than 1/10 the size of London (admittedly it is the second largest town in this country). The largest distributor in Sweden has a shop where you can get the most frequently ordered items from their catalogue over the counter, and the rest of what they have in stock next day. Not far from there, there is a shop that sells any machine tool or part you may want. None of them are cheap, but you can get what you need. Jonas

13 years, 8 months

rough Microvax II in NJ

by rampaginggreenhulk＠yahoo.com

I never plugged it in. Really don't want to (but I could be coaxed, no pun intended though it would be a poor, spurious one). Judging by the prices I've seen these things go for on ePay, I would think anything is worth 100$, but I *may* decide to cut someone a break, especially if they picked it up. This unit is in rough shape, don't even know if it works. Some of the metal side and rear paneling has accumulated rust, one piece a lot of, but nothing a proper restoration couldn't remedy I don't think. The front bezel is all funky, a noticeable crack, though not too large, very brown. I have pictures somewhere. There appears to be a baby opossum living in mom's garage, so I was apprehensive about dragging the unit out for yet more pictures today. ?If I have to ship it, I'm going to tack something on (many thousands of dollars likely). ?Your thoughts are welcome :)

13 years, 8 months

TO-263 footprint?

by mcguire＠neurotica.com

Hey folks! Would anyone happen to have a PCB footprint for a TO-263 package? I'm designing a circuit that will use an LM2577 switching regulator. I've checked on gedasymbols.org to no avail. I'm kinda surprised it's not in the standard library. Thanks, -Dave -- Dave McGuire, AK4HZ New Kensington, PA

13 years, 8 months

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