test-drb

test-drb@ccmp.vtda.org

101090 discussions

by djg＠pdp8.net

>I'm sure that there's service documentation or schematics online somewhere. > ftp://ftp.pdp8.net/misc/4010/ Tiff and PDF are identical so you only need to download one. In a quick look I didn't see an adjustment in section 4 stated for the problem. 6-48 says how it's supposed to work. I did find out with mine that if you have some faint ghost image from previous drawing that leaving it at the bright screen you get on power on for a minute seems to get rid of it.

19 years, 4 months

Wanted: bulk decconnect 6 conductor flat cord

by tothwolf＠concentric.net

I've finally decided to go ahead and start making MMJ cables again after all. The seller who has been giving me trouble has given me several reasons to go ahead and compete. First off, his last email to me was this: > Ha Ha I didn't copy YOUR idea. You're so vain. > > Anyway, it doesn't matter what you say or think about me. I used to > like Texans before this experience. Well, I like Bush. > > Well, good luck I wish you the best. ...he then bid on one of my adapter kits to try scare away other bidders. I did cancel his bid and added his username to my BBL. Another bidder bought the kit, so I didn't even lose a sale over that. I also suspect he wanted to see how I had them wired, though I flat out old him to look up the DEC pinout. He bought a 1000ft spool of genuine decconnect cable off of eBay a month or so back, and after he started emailing me and then bid on my adapter kit, I've decided I'd like to compete with this guy head on. If someone has a spool of such cable laying around and wants to part with it, please let me know. I tried going after a lot of 10 50ft cables a few weeks ago so I could use their cable to make shorter/more useful cables, but a DEC reseller nabbed them ;P Most recently the guy who started copying my adapter kits has changed his listings for the MMJ cables he is making after my initial post/rant here on classiccmp: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130075722308 > Digital Equipment Corporation DEC BC16E 10 feet long DECconnect Office > Cable. Made from a spool of genuine, authentic, high quality DECconnect > Office Cable and MMJ offset style plugs. The MMJ plugs are high quality > and commercially available. > > The crimps are carefully made and thoroughly tested. I would never sell > a cable that did not work. > > Note that once I purchased a crimping tool from an eBayer. That tool > did not work properly and that eBayer later admitted that he sold me a > cheap tool. That particular tool has not been used in making any of my > cables sold on eBay. I now use a high quality crimping tool purchased > from a reputable supplier! > > This cable has never been used before other than to test it to make sure > it works. Tested on a DEC Alpha and VAX. Will work the same for any DEC > machine. > > This is a high quality cable that is tested and working. It is made > from DEC branded cable, not from a third party cable such as Graybar, etc. Not like I believe him, especially as this only appeared after my posts... -Toth

19 years, 4 months

Humpty Dumpty

by ajp166＠bellatlantic.net

> >Subject: Re: Humpty Dumpty > From: "Ethan Dicks" <ethan.dicks at gmail.com> > Date: Thu, 08 Feb 2007 14:50:16 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 2/8/07, Richard <legalize at xmission.com> wrote: >> As near as I can tell, there are like 3 people who care about >> terminals: myself, Paul Shuford (who is the only source of online >> information about many kinds of terminals) and Paul Williams (who runs >> and maintains vt100.net). > >4. I have a collection of terminals, 90% of which are various DEC >models (VT-50 through about VT-320), but a couple of Tektronix, couple >of Planar, Heathkit, CiTOH, etc. I have VT100 series and VT320 and VT340 along with a VT1200. >> Most terminals do not have graphics capability, just character >> capability. Color graphics terminals are even scarcer. > >I'd have to check the stack, but the Tektronix terminals are color >graphics + text (local printer port, etc.), and of course, the VT241 >is color graphics + text, as is the DEC GIGI. I agree - they are >rare. Rarer are the applications to drive them. I don't know of many >color Tek apps, but there were quite a few for the GIGI under TOPS-20. Error! VT100 had sixel graphics as did VT220, 320 and 340 added color, VT1200 as full graphics (xterm). >> Terminals that have 3D graphics builtin are even scarcer than that. > >Indeed. I don't know if I've ever seen one. > >> The Visual >> 500 therefore is of interest to me because it is older and has >> graphics. (Not all Visual terminals have graphics, but the 500 does.) > >Interesting. Shame the seller was too cheap/ignorant to package >things properly. I have to wonder how he got them to accept it - I've >been to the UPS depot and seen them turn away customers with boxes >that had heavy, shifting loads (improperly packaged computer bits). The V500 and others postdate the VT220 and it was the VT100 and VT220 that were a strong influence on the high end ANSI compatable terminal market. Even the Heath H19 has VT52/ANSI(VT100 subset) compatable modes. Allison

19 years, 4 months

A newbie and an IBM 5360

by ballsandy＠msn.com

First off, I'm new to cctalk so please be easy on me. :) Anyways, I ahve always been facinated by those older pieces of history that IBM made and distrubuted. About six months ago I got the idea to start searching and find one to add to my collection of computers. After some hard searching I found this one: http://www.vintagecomputermarketplace.com/view.cfm?ad=2372 An IBM 5360 with quite a few extras and best of all, it was free! The corestore also has one but it's less than complete. http://www.corestore.org/36.htm I thought it was perfect for a person who was starting in this new realm of computing until I spotted something: Location: Heartford, CT Shipping: Pickup only Great! the thing is all the way across the country. By the looks of it I am going to have to give it up (I doubt anyone would hold it for me, you would have to be crazy to even mention it to the wife). I'm just giving a heads up that it's in existance and if anyone wants it (or help me) they can feel free to get it. _________________________________________________________________ Find out the restaurants participating in Winterlicious http://local.live.com/default.aspx?v=2&cp=43.658648~-79.383962&style=r&lvl=… >From January 26 to February 8, 2007

19 years, 4 months

HP gear sought

by jwest＠classiccmp.org

I'm kinda sorta half-way looking for some additional HP gear that is out of the area I normally look for.... HP 1340A X-Y display HP 1350A Graphics Translator I may have to get another HP rack...... ;) If anyone has a spare 1340A and/or 1350A they'd like to trade off, I'd be happy to offer up some gear for 'em. Jay

19 years, 4 months

(OT?) Can anyone web-host a few articles?

by ard＠p850ug1.demon.co.uk

As many of you know, I am a member of HPCC (Handheld and Portable Computer Club), a UK user group for HP calculators, etc. This group publishes a magazine called 'Datafile'. Anyway, I have been persuaded to write a few articles for said magazine. The current issue contains one explaining how to cure that well-known hardeneed grease problem in the Sony full-height 3.5" disk drive. I've illustrated the article with a number of photos showning the stages in dismantling said drirve. As yoy also know, I don't haev a digital camera, but the company who processed the film put scans of the photos onto a CD-ROM for me, I believe as JPEG files, about 2.5Mpixels. Although the results printed in the magazine were excellent, they were necessarily small, and both the editor and I feel it would be a good idea to make the article(s) available on the web with full-sized images. The reason I put OT? im the subject line is that said articles may not be classic _computing_. I think I'll only be writing about stuff more than 10 years old, mostly HP (but maybe the odd machine from Sharp, TI, etc). And mostly calcualtors and handheld computers (the last bit is why you might not consider it to be classic computing). Can anyone help by suggesting a site that might host said articles? If so, I'll put you in touch with the magazine editor. Thanks in advance -tony

19 years, 4 months

CTX Panoview 630 power supply pinout?

by ethan.dicks＠gmail.com

Does anyone on the list have a CTX Panoview 630 (or similar, it was sold under several names) LCD monitor that can verify the power brick pinout? The connector looks like a 6-pin mini-DIN with one pin removed for keying (so that you can't plug in a keyboard, I'd expect). I picked up two of them from the Mansfield Hamfest, sans power brick, with the expectation of being able to trace out the connectors easily. I know the unit takes +5VDC and +12VDC, but since the power just seems to go into the main board, through a couple of mini-fuses, then into some DC-DC components, it's not obvious to me which would be +12 and which would be +5, even once I trace them out from the power input connector. I've grubbed around on the 'net today a bit and only have managed to verify that these were once sold as an Elo part # ELT121C TFT (w/touchscreen), but with no specifics on the power brick. Elo lists it as obsolete and replaced by a model with an integral mains power supply, which is obviously of no help to me. Thanks for any pointers, -ethan

19 years, 4 months

Shameless Plug: Unisite offered

by kyrrin＠bluefeathertech.com

Fellow techies, A brief shameless plug: I've just posted one of my Data I/O Unisite programming systems for sale on That Auction Site. A seller search for the ID 'bftbell' will turn it up if you're interested. Thanks much. -=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com kyrrin (at) bluefeathertech do/t c=o=m "If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"

19 years, 4 months

Hp SCSI front load Tape drive spotted FS in Oregon

by innfoclassics＠gmail.com

The State of Oregon surplus store has a tall HP rack with a HP 7980S tape drive ( 1" front load SCSI) and a A3312A disk array mounted in it for the tag price of $50. Since it is a govt. agency assume no disk drives installed in the array cabinet. It is in Salem Oregon, The store is open 1 pm to 4 pm Tue thru Friday.

19 years, 4 months

has anyone constructed 3D models of vintage gear?

by legalize＠xmission.com

The subject pretty much says it all. I've been reading "From Whirlwind to MITRE: The R&D Story of the SAGE Air Defense Computer", which is very similar in feel to "The Rocket Team" (the story of the V2). I was thinking that it would be really cool to have a complete 3D model of the SAGE that you could move through DOOM style. You'd start with coarse texture-mapped approximations until you could model things in more detail. Maybe there are some models already out there? -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

19 years, 4 months

Humpty Dumpty

by jfoust＠threedee.com

At 02:42 PM 2/8/2007, Ethan Dicks wrote: >On 2/8/07, Richard <legalize at xmission.com> wrote: >>I've not heard of Planar before, so I'd like to hear about that one. > >They are still around. They now make VGA and DVI LCD panels, but at >one point, they made terminals and PCs. I have a Planar wall-mount >486 (LCD, 2.5" disk, external CD-ROM...) and couple Planar ELT-320s. Their Lake Mills, WI facility closed in 2002. It was perhaps the last USA-based LCD manufacturing plant. - John

19 years, 4 months

Service Manual/Schematics for an IBM 7861-015 modem?

by ethan.dicks＠gmail.com

Had a good day at the Mansfield Hamfest today. I now have some LCD monitors that I need to scope out power for (+5 @ 2A, +12 @ 1A), a nixie-tube panel DVM, and a couple of IBM modem frontpanels. >From googling the IBM model number (7861-015), they appear to be from a 9600bps 4-wire leased-line modem. I picked them up because they have a 20-key keypad with double-shot hex letters (0-9, A-F) that look really handy for attaching to an 1802 or similar, and a 1x16 char "british flag" VFD. What I'd really like is to get my hands on a schematic to skip the step of reverse-engineering the VFD drivers. Does anyone on the list have any docs on IBM modems at that level of detail? Thanks for any pointers, -ethan

19 years, 4 months

Preservation of correspondence

by roger.holmes＠microspot.co.uk

I've been listening in on this thread (though I skipped a few) and am wondering how you can tell whether a CD or DVD has corruption which is being corrected or whether it is pristine. If I can tell, then maybe when there is corruption I could re-record the data before it becomes unreadable. Of course I can also keep multiple copies on different sites.

19 years, 4 months

Preservation of correspondence

by aek＠bitsavers.org

>> Is everything you're 'backing up' checksummed? > > Yes. I regularly ( == when I remember!) backup my email > by throwing it all into a zip archive and then that gets > written (along with other stuff) to CD, along with an > MD5SUM file. Good for you! Few people do backups. Those that do trust that the data that was copied was done so CORRECTLY. I have to implement a digital archiving mechanism for the CHM software collection, so this is all VERY fresh in my mind right now. The trick is coming up with something that has verification down to the individual archive commit that can be tracked essentially forever.

19 years, 4 months

Tower of Nerd

by ken＠seefried.com

From: "Zane H. Healy" <healyzh at aracnet.com> >ELKS will run on a 286, right? IIRC, I've got a 286 S-100 Bus CPU >card (I know I have a 80186 card). There was a V6 port to the 286 for which at least some source is laying around the net (I've never looked to see if it was remotely complete/buildable). V7 should be doable, if anyone remembers enough about it to try. There was Xenix & Venix as well, not that anyone wants to run Xenix unless they have too...:-). Wonder if 2BSD could be the basis of a port. Sorta similar constraints. Ken

19 years, 4 months

Schematics needed for H7868

by bob＠jfcl.com

Does anybody have the maintenance prints for the H7868 (BA213) power supply? Bitsavers and max appear to have nothing on this guy. Thanks, Bob Armstrong

19 years, 4 months

Preservation of Correspondence - And Media - MMI PALS's

by grant＠stockly.com

>Looks like the 16R8 has 8 inputs, 8 D/Q outputs with feedback, 1 clock >input, and 1 output enable input. Looks like there are 32 columns (8x >input True/False plus 8x D/Q feedback True/False) and 64 rows (8x >product terms into each D/Q output) for a total of 2048 fuses. So I >think that would be 256x8, not 512x8. 1024 fuses is right. Talking about "looks", I just happen to have pictures of the silicon on a MMI 16R8 HAL. A HAL is just a manufactured PAL. http://www.stockly.com/forums/showthread.php?t=18 I have a 15-20 mega pixel picture of the entire fuse map. I'd like to be able to say I finished reading it, but I barely got started. There is a place in china that will do it for less than what it cost me to get the chip decapped. :) Grant

19 years, 4 months

Tower of Nerd

by grant＠stockly.com

I thought you guys would get a kick out of this. No, I am not attempting to build a beowulf cluster... The ultimate Altair needs to run Linux. I spent the first few hours today thinking up an S-100 card with a 386 processor. : ) Idle minds can be dangerous... It will have to wait on that because I am still deep in the hole with this crazy project... http://www.altairkit.com/images/070210-AltairTower_2172.jpg Grant

19 years, 4 months

Why isn't Apple releasing patches for the Month of Apple Bug exploits???

by aek＠bitsavers.org

> am I the only one who sees the urgency in fixing those memory corruption and > root privilege escalation exploits? What possible good is posting this HERE going to do? Why don't you raise this issue where someone who has any influence over what Apple does participates?

19 years, 4 months

Preservation of Correspondence - And Media

by aliensrcooluk＠yahoo.co.uk

--- Billy Pettit <Billy.Pettit at wdc.com> wrote: > **>> snip <<** > > Everybody else seems to have lots of horror storie s > about media. I don't. > I want to again state that I have seen CD's burned > in the 1976-77 time > period that can still be read. And I've seen DVDs > from the early 90's that > can also still be read. Reliably. > **>> snip <<** > > Billy > Woah... I thought CD's were invented in 1982? I remember it easily as thats the year my younger brother was born. Or was that the year they first came to the UK/Europe?? Regards, Andrew D. Burton aliensrcooluk at yahoo.co.uk

19 years, 4 months

Tektronix terminals

by rickb＠bensene.com

Christian wrote: >Another unrelated question: The 4010 I got needs an awfully long time >until it will fully erase the screen (at least 20 minutes). When it's cold >it will only erase the center in the shape of a (distorted) circle, the >corners won't be erased. Is this a typical sign of a used CRT? I know the >main heater and cathode (for the writing beam) are fine, I suspect the >collimation electrodes or the flood gun. Does anyone have experiences with >that problem, is there any cure (e.g. a longer flooding time) ? I used a lot of 4010s and 4014s in my days at Tektronix, and saw this type of problem on numerous occasions. The primary terminals for the Control Data Cyber 73 (and later, an added Cyber 175), and Vax 11/780 (VMS during the day, BSD 4.x Unix at night (for the hacks to play with), intermittently) were 4010s and 4014s. There were user areas with a bunch of these terminals grouped together. These user area terminals were very heavily used. Most people didn't have terminals at their desk in those days. The flood system that erases the screen has a limited lifetime. I know there was some adjustment inside both of the terminals (but you'd need a service manual...perhaps bitsavers?) that would adjust the flood current. However, if adjusting this didn't work, they'd check a couple of test points on one of the circuit boards, and if all the numbers came back right, the factory service guys would not fuss with it anymore, and start right away on replacing the tube. A good factory service person could replace the tube in a 4010 (took longer for a 4014) in about 20 minutes. My guess would be that, given the many, many years this terminal has been around, that the tube is just plain worn out. It is a possibility that some of the components in the flood drive circuitry have changed characteristics over the many years...resistors and capacitors can do this, as well as active components due to heat and power cycling. I'm sure that there's service documentation or schematics online somewhere. If bitsavers doesn't have it, I know that there is a website dedicated to Tektronix equipment, and has scans of lots of manuals and such, but can't recall the URL (don't have it bookmarked). Such material would at least let you know if the tube is tired, or if perhaps something else in the flood drive circuitry has gone astray that might be repairable. Rick Bensene The Old Calculator Web Museum http://oldcalculatormuseum.com

19 years, 4 months

oi ancient IBM computer "Bible"

by chrism3667＠yahoo.com

http://cgi.ebay.com/1945-IBM-Computer-Engineer-s-Bible- Antique-Manual_W0QQitemZ190079723533QQihZ009QQcategory Z1247QQrdZ1QQcmdZViewItem One can only wonder if an up to date translation would be necessary :D ____________________________________________________________________________________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com

19 years, 4 months

Tektronix terminals [was: Re: Re: Humpty Dumpty]

by djg＠pdp8.net

> > There also was a 'write through' mode, > > again, not sure if it was a hack, or part of the production terminals, > > that would (within the limitations of the RS-232 port) could do simple > > dynamic (non-stored) vector graphics. >It is also on the 4010. The 4010 and the 4014 have a card cage into >which you can insert your own cards. > I have a 4010 and didn't see any mention of this in the manual. Do you know if it took special cards? >At the very least it would be interesting to >add a USB port to the Tektronix this way to give it a higher serial >transfer rate. The number and complexity of the dynamic vectors that >you can draw is currently limited by the baud rate on the port. > On the 4010 you can exceed the draw rate for stored vectors when running at 9600 baud and you don't sent the unchanged bytes in the coordinates. I was trying reduce the draw time to make a better demo and found that long vectors wouldn't line up properly at 9600 when several of the bytes didn't need to be sent.

19 years, 4 months

Portable Sun on ebay # 250082537181

by legalize＠xmission.com

Never heard of one of these, but I was surprised to read it was a Sun? Is this an x86 Sun or a ruggedized/portable SPARC or somesuch? -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

19 years, 4 months

Tower of Nerd

by grant＠stockly.com

>Did anyone make S-100 SCSI? One could roll ones own, but that's a >different level of expense. The 5380, 3 resistor packs, a '138, couple latches, and about 10 square inches of an S-100 breadboard card. Grant

19 years, 4 months

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