test-drb

test-drb@ccmp.vtda.org

101090 discussions

by cmhanson＠eschatologist.net

On Jan 5, 2020, at 7:02 AM, Liam Proven via cctalk <cctalk at classiccmp.org> wrote: > Sun *did* do a full port of OpenStep to Solaris, but while I know > people who saw it, I am not sure if it got a full commercial release. Not quite! Sun was a participant in creating the OpenStep standard (the NS class prefix stands for ?NeXT/Sun?) and *created their own implementation* of OpenStep for Solaris. (Just as GNUstep is an independent implementation of the OpenStep spec under the FSF umbrella, and OPENSTEP/Mach and OPENSTEP/Enterprise were NeXT?s implementations.) OpenStep Solaris was released, both the user and developer environment, and you should be able to find them today and install them on Solaris 2.5 or later. I think OpenStep will run on everything through Solaris 7 or Solaris 8, but at some point it stopped working because it required Display PostScript in the window server. > Sun also bought a number of NeXTstep software houses, including > Lighthouse, but didn't release the code. Indeed, that was post-OpenStep; they weren?t buying companies like Lighthouse to get a suite of applications for OpenStep Solaris, they were buying them to port their stuff to Java (since Java was based rather heavily on Objective-C, and some aspects of the Java frameworks? designs on OpenStep). ? Chris

6 years, 3 months

One of Bay Area's last Fry's Electronics stores closes

by sieler＠allegro.com

Re: > Subject: One of Bay Area's last Fry's Electronics stores closes > ... > Palo Alto Fry?s closing < > https://www.sfgate.com/bayarea/article/Bay-Area-locations-Frys-Electronics-…> > . > Wow, how important little words are! The URL for the SFGate article is misleadingly "...Bay-Area-locations-Frys-Electronics-closed" ... which is wrong. The CCtalk thread is "One of Bay Area's last Fry's Electronics stores closes" The original SFGate article's title (click on link above to see) is: "One of Bay Area's few Fry's Electronics stores closes" Each means something different. ("one of...last" is more dire than "one of ...few"). Isn't English interesting? Keep that in mind while reading political reporting, too :) Stan

6 years, 3 months

Motorola app notes

by aek＠bitsavers.org

did anyone copy the moto app notes that were once at http://www.shrubbery.net/~heas/willem/PDF/Motorola/apnoteindex.html ?

6 years, 3 months

SCO software box last chance

by mark.tapley＠swri.org

?spoken for. have not yet brought myself to throw away this big box of SCO software. Last call, though. - Mark 210-522-6025 office 210-379-4635 cell

6 years, 3 months

Mach

by cmhanson＠eschatologist.net

On Jan 5, 2020, at 2:30 PM, Guy Sotomayor via cctalk <cctalk at classiccmp.org> wrote: > > ?It did seem for a while that a lot of things were based on Mach, but >> >> very few seemed to make it to market. NeXTstep and OSF/1, the only >> version of which to ship AFAIK was DEC OSF/1 AXP, later Digital UNIX, >> later Tru64. > > Yes, a lot of things were based on Mach. One OS that you're forgetting > is OS X. That is based upon Mach 2.5. Nope, Mac OS X 10.0 was significantly upgraded and based on Mach 4 and BSD 4.4 content (via FreeBSD among other sources). It was NeXT that never got beyond Mach 2.5 and BSD 4.2. (I know, distinction without a difference, but this is an issue of historicity.) I think only some of the changes from Mach 2.5?3?4 made it into Mac OS X Server 1.0 (aka Rhapsody) so maybe that?s what you?re remembering. >> MkLinux didn't get very far, either, did it? >> > > I think that was the original Linux port for PPC. It was the original Linux port for NuBus PowerPC Macs at least. It was never really intended to ?get very far? in the first place, it was more of an experimental system that a few people at Apple threw together and managed to allow the release of to the public. MkLinux was interesting for two reasons: It documented the NuBus PowerMac hardware such that others could port their OSes to it, and it enabled some direct performance comparisons of things like running the kernel in a Mach task versus running it colocated with the microkernel (and thus turning all of its IPCs into function calls). Turns out running the kernel as an independent Mach task cost 10-15% overhead, which was significant on a system with a clock under 100MHz. Keep in mind too that this was in the early Linux 2.x days where Linux ?threads? were implemented via fork()? I don?t recall if anyone ever did any ?multi-server? experiments with it like were done at CMU, where the monolithic kernel were broken up into multiple cooperating tasks by responsibility. It would have been interesting to see whether the overhead stayed relatively constant, grew, or shrank, and how division of responsibility affected that. ? Chris

6 years, 3 months

Taligent

by cmhanson＠eschatologist.net

On Jan 5, 2020, at 12:56 AM, Jeffrey S. Worley via cctalk <cctalk at classiccmp.org> wrote: > Does Talingent Pink sound familiar? OS/2 was ported to powerPC, and so > was Netware iirc. The field was quite busy with hopeful Microsoft > killers. OS/2 was to be morphed into a cross-platform o/s, to wean > folks from dos/x86..... Then PPC kills the x86 and we all get a decent > os. That was the plan anyway. I never saw OS2 for PPC or Netware for > OS/2, thought I know both to have shipped. Pink was the C++ operating system project at Apple that became Taligent. I know a couple of people who did a developer kitchen for Pink pre-Taligent, and I also know a number of folks who worked on the Taligent system and tools?and have personally seen a demo of the Taligent Application Environment running on AIX. I?ve even seen a CD set for Taligent Application Environment (TalAE) 1.0 on AIX, and I have a beta developer and user documentation set. Unfortunately my understanding is that the CD sets given to employees to commemorate shipping TalAE were all *blank*?the rumor I?ve heard is that IBM considered it too valuable to give them the actual software that they had worked for years on. (Maybe there were tax implications because of what IBM valued the license at, and the fact that it would have to be considered compensation?) Taligent itself was only one component of IBM?s Workplace/OS strategy, which was a plan to rebase everything atop Mach so you could run AIX and OS/2 and Taligent all at once on the same hardware without quite using virtual machines for it all. The idea is that Apple would do pretty much the same with Copland and Taligent atop NuKernel rather than Mach. It would be really great to actually get the shipping Taligent environment and tools archived somewhere. While only bits and pieces of it are still in use?for example, ICU?a lot of important and influential work was done as part of the project. For example, the design of most of the unit testing frameworks today actually comes from *Taligent*, since Kent Beck wrote SUnit to re-create it in Smalltalk, and JUnit and OCUnit were based on SUnit?s design and everything else derived from JUnit? ? Chris

6 years, 3 months

HP 1670E logic analyzer QUESTION ??

by gerardcjat＠free.fr

This equipment is said to have an internal 2 Go HD. Who knows what KIND of HD? ??? HP SCSI? ?? Thanks

6 years, 3 months

SCO software box last chance

by mark.tapley＠swri.org

All, have not yet brought myself to throw away this big box of SCO software. Last call, though. I?ll pay media rate to get it to you in the US, just let me know that you want it and where to ship it. If you are abroad, email me and we can split postage, depending on total price. SCO OpenServer (TM) Development System Documentation Package Version 5.0 Part Number: 505-000-101 Model Number: MC105-UX00-5.0 Order Number: 87873506 Big Aqua-colored bocx that says, SCO: It?s Business Critical,. It?s SCO. - Mark 210-522-6025 office 210-379-4635 cell

6 years, 3 months

DEC flat cables

by michael.99.thompson＠gmail.com

> > Date: Sat, 4 Jan 2020 08:57:40 -0500 > From: David Gesswein <djg at pdp8online.com> > Subject: DEC flat cables > > Has anyone found a good method for repairing the DEC flat cables? > The ones with flat wires with plastic laminated to each side. The glue > holding the plastic on fails and you end up with two sheets of plastic and > loose wires. > For low speed signals. I just replaced the flexprint with modern ribbon cable. Seems to work just fine. -- Michael Thompson

6 years, 3 months

IBM RS/6000 Model 320 (7012-320) SCSI cabling

by cmhanson＠eschatologist.net

Does anyone have a spare internal or external SCSI cable for the IBM RS/6000 Model 320 with the IBM MCA SCSI-1 card (3-1)? For those who don?t know/remember, this card uses a pair of edge connectors (like MFM/ESDI) rather than an IDC connector to connect to its internal two-drop cable, and its external connector is a **sixty-pin** higher-density Centronics connector. I can make an IDC cable adapter pretty easily but if anyone knows where to acquire working original cables, that?d be preferable to my relative lack of mechanical skill. -- Chris

6 years, 3 months

Odd vintage computer sellers

by treen0＠gmail.com

> I've been after a manual for months. There is one up on eBay for $520, > it's been there for months.? A few weeks ago the seller sent out an > offer to anyone watching, with an offer of $399, I sent a counter > offer of $99.? I just bought a copy that turned up yesterday for $20. > Zane I see the same thing all the time on Amazon and various other used booksellers, it's a malfunction of using an automated pricing system.? My uncle has spent years importing college textbooks and explained it to me about fifteen years ago, the system is fairly simplistic and sets prices automatically based on other seller's prices.? The sellers have no idea what anything is worth, so they trust the automated system rather than the buyer.? One person comes in and prices an old manual at some randomized, arbitrary amount in the hundreds of dollars (or a computer in the thousands), and the entire market adjusts to selling at that price without any human interaction.? The systems then ignore the lowball prices set by sellers who run smaller businesses and need to move inventory or sellers who understand the actual value of the item. This leads to situations where an old paperback about an obsolete programming language gets priced at $455 and a half dozen other sellers under-cut it by pennies. If you want to see how this same sort of thing affects various other markets, look into high speed trading firms.

6 years, 3 months

Some new text adventure stuff for 2.11BSD

by athornton＠gmail.com

I'm having a party on Saturday January 11 (and if any of you are in Tucson, or want to come to Tucson for it, you're invited; email me for the address and time). Although the party is Elvis-themed, it's really about boardgaming and classic videogaming. So I kind of wanted to put a general-purpose Z-machine interpreter on my PiDP-11, so that people could play Infocom (and community) games on a real terminal. Turns out there wasn't really one, so I ported the venerable ZIP (which I have renamed "zterp" for obvious reasons) to 2.11BSD on the PDP-11, and I also wrote a little utility I call "tmenu" to take a directory (and an optional command applying to files in the directory) and make a numbered menu, so that my guests who are not familiar with Actual Bourne Shell can play games too. These things are at: https://github.com/athornton/pdp11-zterp and https://github.com/athornton/pdp11-tmenu/ Both are K&R C, and compile with the 2.11BSD system C compiler. My biggest disappointment is that the memory map of Trinity, my favorite Infocom game, is weird and even though it's only a V5 game, I can't allocate enough memory to start it. Other than that, V5 and below seem to work mostly fine; V8 is in theory supported but no game that I've tried has little enough low memory that I can malloc() it using C on 2.11BSD. Adam

6 years, 3 months

Odd vintage computer sellers

by aperry＠snowmoose.com

Most of us who collect vintage computers probably have our own stories like this, but I find this so amusing that I just have to share it. Last year I did an exhibit on SPARC clones for VCF PNW and wanted to include a Solbourne in it. Unable to cajole Cameron into loaning me one :-), I went looking for one to buy on eBay. There was a seller with, among other Solbourne hardware, a listing for some number of IDT S4000DXs. They had started with 6 and were down to 4-5 when I started looking. IIRC, the base Buy-It-Now (BIN) price was around $225, but, when they didn't sell, they were relisted with a varying discount. In relistings, the BIN was as low as $167. In a relisting where the discounted price was $195 BIN, I offered $175. The seller didn't accept and, in the counter offer exchange, eventually went above the discounted price. I didn't go for that. Then, in the next relisting, the discounted price was $167. I bought one. They were being sold with a HDD and a Solbourne frame buffer (Sun frame buffers don't work in S4000DXs), but no keyboard or mouse (Solbournes use proprietary keyboards and mice). The one that I got had a dead Sun0424 (Seagate ST1480N) HDD and, I found out later, a broken frame buffer. I put in a SD2SCSI and installed OS/MP (Solbourne's version of BSD SunOS). From the serial console, it worked fine and I included the system in my VCF PNW exhibit. After the show, I spent some time trying to make a Solbourne to Sun keyboard adapter, but couldn't get it to work. I have had it up for sale for a few months (my attention is now focused on the barn-find Sun 3/260 that I hope to have working for this year's VCF PNW). But, back to the seller that I got the S4000DX from ... The seller is still trying to sell 2 of the original 6 S4000DXs (that at one point included the one that I have). However, the pricing has changed. Now, instead of the old base price of around $225, the base price is now $3060. Yes, $3000. But they are being offered with an 83% discount, so one can get a S4000DX for the low, low price of just under $500. I find this amazing and odd. alan

6 years, 3 months

DEC flat cables

by djg＠pdp8online.com

Has anyone found a good method for repairing the DEC flat cables? The ones with flat wires with plastic laminated to each side. The glue holding the plastic on fails and you end up with two sheets of plastic and loose wires. I had some success with contact cement but it only glues the plastic to the flat wires since it doesn't have any body. I tried one of the rubbery adhesives but it wouldn't set. I assume the plastic prevented evaporation of the solvent. I assume the air cure products would have the same issue. I assume two part or UV cure products if UV makes it through the plastic might work better since they come thick enough to fill between the wires. I've never used any of these to know if they may be a better choice. Desirable would be reasonably quick set.

6 years, 3 months

IBM RS/6000 Model 320 (7012-320) and AIX 3.2.5

by cmhanson＠eschatologist.net

I have an IBM RS/6000 POWERstation 320 (original 7012-320) with plenty of RAM and SCSI storage. I?d like to install AIX 3.2.5 on it. Here?s the hardware setup: - POWERstation 320 - 8MB RAM currently, soon to be 72MB - Serial port adapter so I can use a terminal - Correct IBM keyboard (not working at the moment, hence the terminal) - Correct IBM mouse - MCA Color Display Adapter (1-1) - MCA Ethernet Adapter (2-1) - MCA SCSI-1 Adapter (4-1) - AIX 3.2.0 floppy images, including boot floppy images - AIX 3.2.5 CD-ROM images - External SCSI DAT (DDS-1) and CD-ROM drives The CD images appear to be ISO-9660 format, containing piles of ?AIX backup/restore format file? archives; the floppy images are also identified as being that format (no filesystems, just archive content). I?ve seen some stuff online that talks about installing from tape using DAT, so it seems like in theory I should be able to just push the CD contents to a tape and go. Can I use the 3.2.0 boot floppy images with a couple of DDS-1 tapes containing the files from the 3.2.5 CDs to directly install AIX 3.2.5? In what order should the files be put on the tapes? Or do I really need to do a complete install of 3.2.0 first? Another important question: Will I need some sort of key to use the included AIXwindows and xlc, or should this stuff just work? Finally, is there a complete set of post-release patches for AIX 3.2.5 online somewhere? I know 3.2.5 itself was primarily a patch roll-up release, I assume that with Y2K remediation and other bug fixes in the mid- and late-2000s there were a few additional patches released over time. -- Chris

6 years, 3 months

FS : IBM Magnetic cards for IBM selectric "compocarte" (?)

by gerardcjat＠free.fr

A guy, in Europ, sells a box of IBM magnetic cards, used on IBM "Compcarte" ( sorry, french "name" ) They seems in medium state, at least,? but I think these are pretty rare. So, if somebody is interested ..... https://www.ebay.fr/itm/gro%C3%9Frechner-wechseldatentr%C3%A4ger-magnetkart…

6 years, 3 months

Corvus Concept

by curt＠atarimuseum.com

Hi everyone, Happy New Years... Got into a convo with a local friend regarding Concepts. I sold mine nearly 15 years ago to Al Kossow and regretted it ever since. (Nothing to do with Al, he?s a great guy... just regret selling it) Anyone on the list have one that they might consider selling/trading for? Thanks, Curt

6 years, 3 months

One of Bay Area's last Fry's Electronics stores closes

by t.gardner＠computer.org

Palo Alto Fry?s closing <https://www.sfgate.com/bayarea/article/Bay-Area-locations-Frys-Electronics-…> . Sad, but not the end of an era ? apparently the loss of lease I remember visiting an early Fry?s (first?) in Sunnyvale (541 Lakeside Dr?, near Oakmead and around the corner from Shugart Associates where I then worked). I marveled at the selection of steaks, diet cokes, resistors, capacitors, ICs, etc. They had partially converted a supermarket into an electronics store but I heard they at first kept the food to keep some cash flow. I think I bought steaks J The engineers and technicians at Shugart more than once ran over there to get breadboard parts.

6 years, 3 months

VCF PNW 2020: Exhibitors, volunteers and speakers needed!

by mbbrutman＠brutman.com

What: Vintage Computer Festival Pacific Northwest 2020 When: Saturday March 21st and Sunday March 22nd Where: Living Computers:Museum+Labs in Seattle, Washington. Web site: http://vcfed.org/vcf-pnw Why ? So you can share your favorite old computers and projects in person with like-minded others for two full days at a great venue. This is one of the many ways we celebrate computing history while reaching out to a larger audience, and hopefully inspiring others. As of this writing we have seven exhibitors, three speakers, and a handful of volunteers signed up. We are looking for 20 to 25 exhibitors in total, another speaker or two, and a few more volunteers. While returning exhibits are welcome, we want to encourage first-timers to step up and try it out. (It is fun and rewarding!) If you know that you can bring an exhibit please look at http://vcfed.org/vcf-pnw/exhibitor-registration and then fill in the registration form. (Potential volunteers and speakers - send me an email instead, as there is no form.) If you are ?on the fence? or just have questions please send me an email and I will get things sorted out for you. The registration deadline is January 31st but if you know you can commit now it will make project planning easier. A description of the event can be found at http://vcfed.org/vcf-pnw . General information for exhibitors including links to pictures from last year, a link to the registration form, and a FAQ can be found at http://vcfed.org/vcf-pnw/exhibitor-registration . Feel free to email me with questions. Thanks, Mike mbbrutman at brutman.com or michael at vcfed.org PS: Not exhibiting at the event but interested in unloading some tonnage? We're doing a consignment area again and that is open to everybody. Now is a good time to start cleaning and testing things that you might want to sell. You bring your treasures and we?ll bring the buyers. Check http://vcfed.org/vcf-pnw/consignment/ for details.

6 years, 3 months

First Internet message

by c.murray.mccullough＠gmail.com

I?m not familiar with U.S. law but didn?t Xerox ?own? the patent(s) to GUI technology? Again to my knowledge Microsoft and Apple both ?appropriated? and/or ?misapproriated?, depending on your point-of-view, this exact technology! Does commercial-use, read profit, subsume legal rights eventually in the U.S. and I suppose elsewhere in the capitalist world? Given what has happened in the past 45 yrs. or so, and the almost equal value of Microsoft and Apple(determined by the stock exchange), has the marketplace prevailed? Have we the consumer benefited the most or more accurately the 2 richest high-tech, transnational corporations? Happy computing - and best wishes for a prosperous New Year for all. Murray ?

6 years, 3 months

Large Batch of Macintosh (SE/II to iMac) RAM for Sale

by sellam.ismail＠gmail.com

Hello Fellow Vintage Computing Aficionados. I have a large batch of RAM specific to the Macintosh (from Mac II/SE series up through iMac). Please inquire about any of the listings below. I apologize if I did not provide enough information, please contact me for additional specifications. These modules have been carefully stored away in anti-static bags, and some are still sealed/old-new stock. Pricing is for single (1), double (2), or quadruple (2) sets of modules, plus shipping. Shipping can be included with orders of multiple sets. Added up the asking price for everything in this listing is $400. I'll take $300 for the entire batch and will give such a sale priority over individual sales. A more readable listing (in spreadsheet format) can be found here ==> https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi… Cubig 16MB 72-pin SIMM Sealed in anti-static bag. $6.00 Cubig 16MB 72-pin SIMM (2) 4X362S $12.00 Cubig 16MB 72-pin SIMM 4Mx36 $6.00 Fairchild 1MB 30-pin SIMM (2) 1Mx8 70ns $15.00 Hyundai 16MB 168-pin DIMM (2) HYM564224 AXG-60 $14.00 Hyundai 128MB PC-66 SDRAM HYM7V641601 TFG-10 $5.00 Kingston 128MB PC-100 SDRAM (2) KTA-G3100/128-CE $10.00 LG Semicon 4MB 72-pin SIMM (2) E71042 LG1; GMM7322000BN $10.00 Lifetime Memory 8MB 72-pin SIMM 10155A $5.00 Micron 128MB PC-100 SDRAM IH61959; PC100-222-620 $5.00 Mitsubishi 256K 72-pin SIMM (VRAM) 256Kx8; VRAM for Quadra 840av $12.00 Mitsubishi 4MB 30-pin SIMM (2) 4Mx8 $20.00 Mitsubishi 8MB 72-pin SIMM (2) 2MX32; MH12816AJ-8 $12.00 Mitsubishi 16MB 168-pin DIMM (2) 2Mx64 MH2M64CZPJ-6; MSAI AP168N9B-C $14.00 Motorola 1MB 72-pin SIMM MCM32256AS70, 256Kx32; for Macintosh LC 575 $6.00 Motorola 8MB 72-pin SIMM MCM32230SH60; 2MBx32 $6.00 NEC 8MB 168-pin DIMM (2) MC-421000AA64FB-70; 604 class $12.00 Panasonic 16MB 30-pin SIMM KJY-0364; 16X8-60; new in sealed anti-static pouch $10.00 RMR 16MB 72-pin SIMM (2) 4X32-60; sealed in anti-static bag $18.00 RMR 16MB 72-pin DIMM (2) HY5117400B 4Mx4 $15.00 RMR 32MB 168-pin DIMM 105174B; 604 class $7.00 SEC 32MB 168-pin DIMM KMM364E410BK-6; 604 class $5.00 Samsung 4MB 72-pin SIMM KMM5322000BV-6; for Quadra 840AV $6.00 Southland 32MB 72-pin SIMM (2) SGE 8X32T6 non-parity 60ns; in sealed anti-static bags in Southland container $20.00 Spectrum Engineering DT77 16MB 30-pin SIMM (4) 16MB modules for Macintosh II series $30.00 Spectrum Engineering DT77 16MB 30-pin SIMM (2) 16MB modules for Macintosh II series $18.00 Spectrum Engineering DT77 16MB 30-pin SIMM (1) 16MB modules for Macintosh II series $10.00 Spectrum DT220 4MB 30-pin SIMM (4) 4MB SIMM modules for Macintosh IIsi or IIc $30.00 Spectrum DT220 4MB 30-pin SIMM (2) 4MB SIMM modules for Macintosh IIsi or IIc $17.00 Spectrum DT220 4MB 30-pin SIMM (1) 4MB SIMM modules for Macintosh IIsi or IIc $9.00 TechWorks 4MB 30-pin SIMM (2) 4Mx8, 70ns; sealed in anti-static bags $15.00 TechWorks 16MB 72-pin SIMM 4x32-60 $6.00 Texas Instruments 4MB 72-pin SIMM (2) 1MX32 TM124BBK32U-70 $10.00 ZTECH 128MB PC-100 SDRAM KO-9013 KM44S16030CT-GL $5.00 Please contact me by e-mail to inquire. Thanks! Sellam

6 years, 3 months

Portlock Storage Manager?

by BHuntsman＠mail2.cu-portland.edu

Anyone on here remember NetWare? :P There used to (fairly recently) be a company called Portlock that made a utility called Portlock Storage manager, which was really excellent, for dealing with storage volumes. Their website was portlock.com. But they seem to be gone now. Does anyone know what happened to them? They used to publish license keys that would expire after about 6 months on their page, but I really hope they didn't go out of business. Thanks!

6 years, 3 months

cctalk Digest, Vol 64, Issue 1

by mark＠markesystems.com

>>> I ordered two from Mouser this week. >> >> And paid in much in S&H (if not more) to buy the two from Mouser then it >> would have cost to get 50 from China... ;) > > And what would I do with 50 when I need 2? I often order from DigiKey or Mouser, but I build ("manufacture") some electronic products in small batches, and I can often piggy-back some personal items onto one of those orders to save shipping. I also frequently order items will-call from Jameco, which is located about two miles from my house. They certainly don't have the huge stock or up-to-date parts that DigiKey and Mouser do, and their web site is atrocious, but I certainly can't beat the convenience. They have a far larger variety of stock than Fry's or Radio Shack ever did, and they're generally a lot cheaper than a retail store, or even DK or M. Surprisingly, there's still an old-school electronics store in the area, too: Sam Mateo Electronics. They even have an old-style drug store tube tester, although they don't stock tubes any more (I think). When I'm buying parts, or almost anything except for tools, I usually order more than I need. Over the (many, many) years, this has resulted in me having a range of parts and other material "in stock" that I would have totally envied in my younger years. I've now reached the point where I'm trying to adapt my designs to make do with the parts I have in stock, rather than having to order new ones. Unlike in earlier years, this isn't due to cost, but rather to try to use up all of the *stuff* I've accumulated over the years... ~~ Mark Moulding

6 years, 3 months

Replacing Electrolytic Capacitors on VAXmate Video Board

by robert.jarratt＠ntlworld.com

I have my VAXmate in pieces at the moment because the PSU has failed. I am still working on finding the fault there, although it seems to be the crowbar circuit that is shutting it down. To work out the problem I am going to buy a DSO (Rigol DS1054Z) as my regular scope is analog and not much use in detecting one-off events. It is an odd fault because there was a definite bad smell after the failure, but I can't find any blown components. Whatever blew up has presumably taken something on the PSU board with it, but I don't know what yet. The PSU shuts down even with none of the other VAXmate boards attached (and using a scratch HDD as a load). Anyway, while I have the machine open, I thought I would look at the video board capacitors too. Before the PSU failed, I noticed a bit of an occasional wobble in the screen image and a narrowing of the image at the top of the screen. I have measured ESR on all the electrolytics. All the larger capacitors seem to have a low ESR compared to the table printed on my ESR meter, some of the small ones (15uF/16V sort of size) have an ESR closer to the values printed on my ESR meter. I don't really want to replace everything if I don't have to, but equally I don't want any kind of failure to ruin an irreplaceable component like the transformer. Should I just re-cap the lot, or just the physically smaller capacitors? Thanks Rob

6 years, 3 months

cctech Digest, Vol 64, Issue 1

by athornton＠gmail.com

I remember chatting a bit with John Fry who saw the sales margins in electronics and compared them to food sales his family's supermarket chain. He figured that the marketing that worked so well in the grocery business would be a winner in electronics sales. Because of his family's connections, he could also offer popular food items. High volume and low margins. That answers my question about why Fry's the supermarket chain (acquired by Kroger's a few years ago) has a logo like the electronics store. The Fry's down near NASA in Houston was also a creepy ghost town a month or so ago. Micro Center in Houston seemed to be doing fine. On Wed, Jan 1, 2020 at 11:00 AM <cctech-request at classiccmp.org> wrote: > Send cctech mailing list submissions to > cctech at classiccmp.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.classiccmp.org/mailman/listinfo/cctech > or, via email, send a message with subject or body 'help' to > cctech-request at classiccmp.org > > You can reach the person managing the list at > cctech-owner at classiccmp.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of cctech digest..." > > > Today's Topics: > > 1. One of Bay Area's last Fry's Electronics stores closes > (Tom Gardner) > 2. Re: One of Bay Area's last Fry's Electronics stores closes > (Chuck Guzis) > 3. Re: One of Bay Area's last Fry's Electronics stores closes > (Fred Cisin) > 4. Re: One of Bay Area's last Fry's Electronics stores closes (Ali) > 5. RE: One of Bay Area's last Fry's Electronics stores closes (Ali) > 6. Re: One of Bay Area's last Fry's Electronics stores closes > (jim stephens) > 7. Re: One of Bay Area's last Fry's Electronics stores closes > (Fred Cisin) > 8. Re: One of Bay Area's last Fry's Electronics stores closes > (John Herron) > 9. New Member Introduction (Mike Begley) > 10. RE: One of Bay Area's last Fry's Electronics stores closes > (Mike Begley) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 31 Dec 2019 10:34:27 -0800 > From: "Tom Gardner" <t.gardner at computer.org> > To: <cctalk at classiccmp.org> > Subject: One of Bay Area's last Fry's Electronics stores closes > Message-ID: <002301d5c008$ef5ba650$ce12f2f0$(a)computer.org> > Content-Type: text/plain; charset="utf-8" > > Palo Alto Fry?s closing < > https://www.sfgate.com/bayarea/article/Bay-Area-locations-Frys-Electronics-…> > . Sad, but not the end of an era ? apparently the loss of lease > > > > I remember visiting an early Fry?s (first?) in Sunnyvale (541 Lakeside > Dr?, near Oakmead and around the corner from Shugart Associates where I > then worked). I marveled at the selection of steaks, diet cokes, > resistors, capacitors, ICs, etc. They had partially converted a > supermarket into an electronics store but I heard they at first kept the > food to keep some cash flow. I think I bought steaks J The engineers and > technicians at Shugart more than once ran over there to get breadboard > parts. > > > > > > > > ------------------------------ > > Message: 2 > Date: Tue, 31 Dec 2019 11:24:27 -0800 > From: Chuck Guzis <cclist at sydex.com> > To: cctalk at classiccmp.org > Subject: Re: One of Bay Area's last Fry's Electronics stores closes > Message-ID: <fa07b790-23ac-5492-48f6-631358c69d0a at sydex.com> > Content-Type: text/plain; charset=utf-8 > > On 12/31/19 10:34 AM, Tom Gardner via cctalk wrote: > > Palo Alto Fry?s closing > > < > https://www.sfgate.com/bayarea/article/Bay-Area-locations-Frys-Electronics-… > > > > . Sad, but not the end of an era ? apparently the loss of lease > > > > > > I remember visiting an early Fry?s (first?) in Sunnyvale (541 > > Lakeside Dr?, near Oakmead and around the corner from Shugart > > Associates where I then worked). I marveled at the selection of > > steaks, diet cokes, resistors, capacitors, ICs, etc. They had > > partially converted a supermarket into an electronics store but I > > heard they at first kept the food to keep some cash flow. I think I > > bought steaks J The engineers and technicians at Shugart more than > > once ran over there to get breadboard parts. > > I was at the grand opening of the Sunnyvale Fry's. A great place to > purchase Canfield's Diet Chocolate Fudge soda, which was all the rage > back then. A friend purchased it by the caselot. > > I remember chatting a bit with John Fry who saw the sales margins in > electronics and compared them to food sales his family's supermarket > chain. He figured that the marketing that worked so well in the grocery > business would be a winner in electronics sales. Because of his > family's connections, he could also offer popular food items. High > volume and low margins. > > Sigh. It was a time when factory reps would come and give live > presentations of their good stuff. And rows and rows of pegboard with > plastic bags of components with red-and-white labels. At some point > they got some sort of deal with Everex (which was in Fremont) and they > had piles of that stuff cheap for sale. In that department, however, > their tech support was close to non-existent. ("Doesn't work? Here's > another one to try" approach). > > But then, the area had lots of surplus electronics places back then, > probably because things were actually manufactured in the Santa Clara > valley. > > The Palo Alto store was after my time. > > --Chuck > > > ------------------------------ > > Message: 3 > Date: Tue, 31 Dec 2019 13:08:54 -0800 (PST) > From: Fred Cisin <cisin at xenosoft.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: Re: One of Bay Area's last Fry's Electronics stores closes > Message-ID: <Pine.LNX.4.64.1912311301460.24943 at shell.lmi.net> > Content-Type: TEXT/PLAIN; CHARSET=X-UNKNOWN; FORMAT=flowed > > Fry's says that they are doing fine. > BUT, that they are moving to a "consignment" model - they now plan to pay > their suppliers only AFTER the merchandise sells. > > Or at least that is what they are telling their creditors. > > They could revitalize the stores, if they would add Jolt Cola, Canfield's > Diet Chocolate Fudge soda, potato chips, cookies, toothpaste, rosin-core > lead solder, and electronic components. Maybe even collaborate with > Fat-Brain to open a computer literacy bookstore. > > -- > Grumpy Ol' Fred cisin at xenosoft.com > > >> Palo Alto Fry???s closing < > https://www.sfgate.com/bayarea/article/Bay-Area-locations-Frys-Electronics-…> > . Sad, but not the end of an era ??? apparently the loss of lease > > > > When I last visited a couple months ago, the one in Wilsonville, Oregon > hadn???t done any restocking to speak of (except a couple video games) for > months. The shelves were largely bare, and all the places they used to > store excess stock were empty. I might be down that way in a few weeks, if > so I???ll try to check on the status of the store. I know in October there > was a news article or two claiming they were in the process of restocking, > but based on my last visit, they seem dead. > > > > Zane > > ------------------------------ > > Message: 4 > Date: Tue, 31 Dec 2019 13:28:16 -0800 > From: Ali <cctalk at ibm51xx.net> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: Re: One of Bay Area's last Fry's Electronics stores closes > Message-ID: <1MfprR-1jNMVN4Btx-00gIGd at mrelay.perfora.net> > Content-Type: text/plain; charset=utf-8 > > > -------- Original message --------From: Fred Cisin?Fry's says that they > are doing fine.BUT, that they are moving to a "consignment" model - they > now plan to pay their suppliers only AFTER the merchandise sells.Or at > least that is what they are telling their creditors.They could revitalize > the stores, if they would add Jolt Cola, Canfield's Diet Chocolate Fudge > soda, potato chips, cookies, toothpaste, rosin-core lead solder, and > electronic components.? Maybe even collaborate with Fat-Brain to open a > computer literacy bookstore.--No. They are closing: > http://www.tonetoatl.com/2019/12/Frys-Electronics-Closed-Duluth-Gwinnett-Pl… > really can't see any manufacturers lining up behind the Fry's BS. They just > don't have the foot traffic for it.?Now as Fred says if they went back to > filling a niche that is very empty (i.e. an electronics part retailer with > stock of hard to get goods on hand) that may work. I hate having to order > 50 capacitors from China everytime I need one....? > > ------------------------------ > > Message: 5 > Date: Tue, 31 Dec 2019 13:32:42 -0800 > From: "Ali" <cctalk at ibm51xx.net> > To: "'General Discussion: On-Topic and Off-Topic Posts'" > <cctalk at classiccmp.org> > Subject: RE: One of Bay Area's last Fry's Electronics stores closes > Message-ID: <016901d5c021$d6407560$82c16020$@net> > Content-Type: text/plain; charset="UTF-8" > > Re-sending for legibility... > > >Fry's says that they > > are doing fine.BUT, that they are moving to a "consignment" model - > > they now plan to pay their suppliers only AFTER the merchandise > > sells.Or at least that is what they are telling their creditors.They > > could revitalize the stores, if they would add Jolt Cola, Canfield's > > Diet Chocolate Fudge soda, potato chips, cookies, toothpaste, rosin- > > core lead solder, and electronic components. Maybe even collaborate > > with Fat-Brain to open a computer literacy bookstore.-- > > > No. They are closing: > http://www.tonetoatl.com/2019/12/Frys-Electronics-Closed-Duluth-Gwinnett-Pl… > > > I really can't see any manufacturers lining up behind the Fry's BS. They > just don't have the foot traffic for it. Now as Fred says if they went back > to filling a niche that is very empty (i.e. an electronics part retailer > with stock of hard to get goods on hand) that may work. I hate having to > order 50 capacitors from China every time I need one.... > > > > ------------------------------ > > Message: 6 > Date: Tue, 31 Dec 2019 13:53:16 -0800 > From: jim stephens <jwsmail at jwsss.com> > To: cctalk at classiccmp.org > Subject: Re: One of Bay Area's last Fry's Electronics stores closes > Message-ID: <e4b87d92-ab2b-de42-6975-33888b5cc384 at jwsss.com> > Content-Type: text/plain; charset=utf-8; format=flowed > > > > On 12/31/2019 1:32 PM, Ali via cctalk wrote: > > Re-sending for legibility... > > > >> Fry's says that they > >> are doing fine.BUT, that they are moving to a "consignment" model - > >> they now plan to pay their suppliers only AFTER the merchandise > >> sells.Or at least that is what they are telling their creditors.They > >> could revitalize the stores, if they would add Jolt Cola, Canfield's > >> Diet Chocolate Fudge soda, potato chips, cookies, toothpaste, rosin- > >> core lead solder, and electronic components. Maybe even collaborate > >> with Fat-Brain to open a computer literacy bookstore.-- > > > > No. They are closing: > http://www.tonetoatl.com/2019/12/Frys-Electronics-Closed-Duluth-Gwinnett-Pl… > > > > > > I really can't see any manufacturers lining up behind the Fry's BS. They > just don't have the foot traffic for it. Now as Fred says if they went back > to filling a niche that is very empty (i.e. an electronics part retailer > with stock of hard to get goods on hand) that may work. I hate having to > order 50 capacitors from China every time I need one.... > They actually were changing to a way of flooring the merchandise closer > to the food industry.? Many things on the shelf in larger supermarkets > are actually managed and stocked at the expense of the people who have > the shelfspace.? So that becomes critical. > > Years ago a drug chain called Zody's used the same method, but for > entire areas of stock, not by item. > > A friend had a pitabread business and went into Ralphs (Krogers in > Southern ,CA).? The buyin for about 2' of space was about $500,000 then > you had to supply the stock.? Payback came to you when you shipped more > to them than they returned or discarded stale (or put in markdown). > > Frito-Lay as well as some of the alcohol aisle actually send in > personnel twice a day to do the stocking.? The store staff doesn't touch > it. > > Anyway it doesn't seem to be happening, i heard the story Fred has 3 > months ago, and it doesn't take this long to do the deal if it's going > to work. > > Years ago when they expanded a friend who had a similar electronics > business said that the electronics side of Fry's was done with large > amounts of debt.? My friend's store was well positioned to expand, but > they wouldn't do the debt model Fry's did. > > That said, either Fry's is profitable, or they've paid down their debt > to where they can withstand what is going on.? If it were a business > with a large debt load the banks wouldn't let them take a week, must > less 3 months and counting to do what is going on. > > And those 100,000sf store rent keeps on ticking full or empty. > > thanks > Jim > > > ------------------------------ > > Message: 7 > Date: Tue, 31 Dec 2019 14:02:13 -0800 (PST) > From: Fred Cisin <cisin at xenosoft.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: Re: One of Bay Area's last Fry's Electronics stores closes > Message-ID: <Pine.LNX.4.64.1912311359300.24943 at shell.lmi.net> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > Who else, but Fry's, has had the impact that third parties have posted > Fry's employment applications? > > jhttp://homepage.smc.edu/engfer_mark/frys.htm > > > > > ------------------------------ > > Message: 8 > Date: Tue, 31 Dec 2019 16:28:34 -0600 > From: John Herron <barythrin at gmail.com> > To: Fred Cisin <cisin at xenosoft.com>, "General Discussion: On-Topic > and Off-Topic Posts" <cctalk at classiccmp.org> > Subject: Re: One of Bay Area's last Fry's Electronics stores closes > Message-ID: > < > CAEOGs+hu+qFbb--rJKLdA8PK7Lk8jfFzOCPXQE5krx76Ber+JQ at mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > Two brilliant minds on this list drinking Canfield's Diet Chocolate Fudge > soda? Guess I need to hop on this mystery band wagon. > > Our Fry's in Austin has also suffered over months of almost nothing on > shelves. Definitely doesn't have the feeling of a company doing well. > They've lost several sales from friends and myself that would have bought > an item if we could see it in person and had it "now". > > Ashame they (and online shopping?) knocked out almost all the other > retailers and competition from town. > > > ------------------------------ > > Message: 9 > Date: Wed, 1 Jan 2020 04:24:03 +0000 > From: Mike Begley <spam at hell.org> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: New Member Introduction > Message-ID: > < > MWHPR1801MB1870FFAA07F9ED7D333F4A96AC210 at MWHPR1801MB1870.namprd18.prod.outlook.com > > > > Content-Type: text/plain; charset="utf-8" > > Hello! New member to cctalk here. I am located in Seattle, and in the > past have worked for a couple largish companies in the Seattle area you've > heard of. > > Through the 80s and 90s I had accumulated a fairly sizable collection of > classic (and not yet classic) computers. Mostly this was along two > branches of machines - Atari 8 bit computers and 80s-era minicomputers & > workstations, including a couple smaller VAXen, a PDP-8 and a large stack > of HP9000/300 machines. Also I had a couple of no-name S-100 machines and > a pretty nice one from California Computer Systems. > > When I moved from the Midwest following college I had to abandon much of > that collection. In the last several years I have started to reconstitute > that collection, at least in the basics. I'm still looking for a genuine > VT100 (or stretch goal - VT278), and in 2020 I'm planning to finally bring > up a simulated VAX cluster using Raspberry Pis and SIMH, since original > hardware is pretty much impossible to find anymore (and fragile when you > can find it). It's frustrating to be hunting for things I had three or > four of at one point... > > Happy to be here, > -mike begley > spam at hell.org > > > ------------------------------ > > Message: 10 > Date: Wed, 1 Jan 2020 04:38:35 +0000 > From: Mike Begley <spam at hell.org> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: RE: One of Bay Area's last Fry's Electronics stores closes > Message-ID: > < > MWHPR1801MB1870BB1A1A2E01BB2D6ECC06AC210 at MWHPR1801MB1870.namprd18.prod.outlook.com > > > > Content-Type: text/plain; charset="utf-8" > > >> > >> Palo Alto Fry?s closing < > https://www.sfgate.com/bayarea/article/Bay-Area-locations-Frys-Electronics-… > >> . Sad, but not the end of an era ? apparently the loss of lease > > > > When I last visited a couple months ago, the one in Wilsonville, Oregon > hadn?t done any restocking to speak of > > (except a couple video games) for months. The shelves were largely > bare, and all the places they used to store > > excess stock were empty. I might be down that way in a few weeks, if so > I?ll try to check on the status of the > > store. I know in October there was a news article or two claiming they > were in the process of restocking, > > but based on my last visit, they seem dead. > > I went to the one outside Seattle a few months ago, and the shelves were > perhaps 15-20% full, at best. It was kinda creepy and kinda sad. We > chatted with one of the stockers, and they said that they just didn't have > the traffic to bring in inventory, so it's the chicken & the egg problem. > They're were also allocating part of the store to do online fulfillment, > and just trying to ramp up their online presence. > > I doubt they'll last until spring. There's no way they can afford the > rent, inventory and payroll on the amount of customers they have these days. > > -mike > spam at hell.org > > > > > End of cctech Digest, Vol 64, Issue 1 > ************************************* >

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