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

by RodSmallwood＠mail.ediconsulting.co.uk

Yes Newbury its at Newbury Racecourse about five miles from me. Power = Own substation Only used for races a dozen times year Indoor Facilities for 20,000+ Large Conference and exhibition spaces Buckets of Bandband More power sockets than a hackers bedroom Own train station. (London < an hour) Landing strip Helicopter pad Car parks Coach parks 300+ buses Short road and then dual carriageway to M4/A34 Junction (London Heathrow Airport 45 mins even if I'm not in a hurry!) Loadsa Local Hotels, Travelodge within five miles. (Empty at weekends when no racing) Wada-else-u-need? Rod Smallwood -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Liam Proven Sent: 09 August 2007 13:01 To: General Discussion: On-Topic and Off-Topic Posts Subject: UK retro show thoughts I've tried to make a couple of points which seem to have sunk unnoticed. While you're all happily arguing about the comparative virtues of various models of generator, I have pointed out that there are already very large-scale computer shows happening in the UK on a regular basis: the commercial LAN parties. If a venue can handle a thousand plus PCs, it can handle a few hundred vintage computers. These places would seem to me to naturally be high on the list of candidate venues. I asked for commentary about the venue for the largest of these, Multiplay. http://www.multiplay.co.uk/ There is one this coming weekend. Perhaps someone in the area - Newbury - could pop over and check it out briefly and report back? Are listers even /aware/ that there are multiple such events every year in this country with literally *thousands* of gamers attending, the majority bringing their own hand-built high-end customised PCs to play on? The custom PC building fraternity is probably the biggest computer enthusiast scene or group in the world today. It's relevant to us. Highly relevant, I submit; their attendees could be some of ours, for a start, and their organizers could potentially tell or teach us a lot. Secondly, there is an existing UK retrocomputing event, although it's not that regular. It's CGE-UK. Here are a couple of reports from past ones: http://www.ukretro.co.uk/cge2004.htm http://www.consolepassion.co.uk/cge-show-report.htm http://www.acornelectron.co.uk/eug/revs/misc/r-cge.html I was at one of these - I don't remember now if it was '04 or '05. It was good fun. Strong games emphasis, which is of little interest to me, but a vast amount of fascinating hardware - all manner of 1980s exotica and obscurities, plus stuff from the '50s, '60s and '70s. For instance, as a child of the (computing) 1980s, I punched my first ever punch card and I handled some core store for the first time in my life. Several list members were there exhibiting. Care to stop debating generators and start making some constructive suggestions, folks? :?) For what it's worth, I was (somewhat peripherally) involved in the running of the 2005 World Science Fiction Convention in Glasgow. I know a lot of people involved in running SF cons and have some useful contacts from that field; I attend up to half a dozen such events a year. This may not sound terribly relevant, but the Worldcon is the largest amateur-run event of any kind in the world and it happens without fail every single year and it's been running for more than 60 years now. There is much we could potentially learn from them. They know how to put on a big event for hundreds or thousands of attendees with no professional help or involvement and a starting budget of zero or close to it. -- Liam Proven * Profile: http://www.linkedin.com/in/liamproven Email: lproven at cix.co.uk * GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 * Cell: +44 7939-087884 * Fax: + 44 870-9151419 AOL/AIM/iChat: liamproven at aol.com * MSN/Messenger: lproven at hotmail.com Yahoo: liamproven at yahoo.co.uk * Skype: liamproven * ICQ: 73187508

19 years

9
8
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Shifting meanings: "Spaghetti Code"?

by brian＠quarterbyte.com

> "... It is also easier to debug because it does not use the > structures of nested if-then-else statements known as spaghetti code > popular in conventional programming languages." ... > When did the meaning change? It hasn't. Let's just say that the quoted speaker has his own take on things. http://www.vsmerlot.com/ Click the "Wasn't the GOTO" link to see what he's talking about. Then take a look at the QuickSort example, to see how he's brought new clarity to the ghastly confusion of the usual coded implementation.

19 years

8
12
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Prime minicomputer simulator?

by sellam＠vintagetech.com

Has anyone developed a simulator for Prime machines? The Oracle of WWW says no. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

19 years

4
3
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Interdata 7/32 C maintenance manual

by Philip.Hastings＠pseg.com

To Whom it may Concern, I saw a link on the net about you having two Interdata 7/32's. Do you still have and if so would you be willing to sell if were in the same ballpark as far as revision on the hardware is concerned? I am tasked with supporting two of these ( yes they are still in production here). Thanks Phil Hastings 856-339-1879 ----------------------------------------- The information contained in this e-mail, including any attachment(s), is intended solely for use by the named addressee(s). If you are not the intended recipient, or a person designated as responsible for delivering such messages to the intended recipient, you are not authorized to disclose, copy, distribute or retain this message, in whole or in part, without written authorization from PSEG. This e-mail may contain proprietary, confidential or privileged information. If you have received this message in error, please notify the sender immediately. This notice is included in all e-mail messages leaving PSEG. Thank you for your cooperation.

19 years

1
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The storage question

by silent700＠gmail.com

Not disk, but physical space. I broke down yesterday and did what I said I'd never do to support my habit: I've rented a storage unit. So now I've got ~1500 ft^3 to help take the pressure off my living space. I may soon see my floors again! Being in the midwest, where we expereince just about every temperature and humidity condition, what do I have to worry about with storing old systems, media, etc in near-outdoor conditions (the unit is not climate-controlled?) The unit will be dry, at least as far as rain, leaks and flooding go. I don't think cold is a big problem, as long as I don't run any equipment that was out in -20F weather without allowing it to assume room temp first. How about heat? I'm worried about floppies and tapes there. Humidity seems like it would be the killer. I'll be storing my magazines there for a while, and I plan to wrap them all in plastic before boxing them. Maybe the same for magnetic media. Ideally I'd have a raised-floor datacenter at 65F degrees and the humidity control of a humidor, but circumstances are what they are, and it's this or start throwing stuff out :) Any advice is appreciated! -- jht

19 years

12
12
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Shifting meanings: "Spaghetti Code"?

by tshoppa＠wmata.com

Chuck asks: > Nested "IF-THEN-ELSE" is now spaghetti code? IMHO it's worse in most cases now. #ifdefs up the wazoo in C source code are beyond imagination. They aren't even executed run-time but clutter up everything! Sure, gnu config helps mechanize the process but when a problem is so bad it results in new tools being created to mechanize the badness it's a sure sign that something's gone off the deep end. Computed gotos are really pretty nifty. Alternative returns (as in Fortran) are really just wonderful for bugging out of deeply nested errors, way way better than a bunch of if-then-elses. Don't forget: A good FORTRAN programmer can write spaghetti code in any language! Tim.

19 years

1
0
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Fluke Dos Question

by d-salafia1＠ti.com

Stan, I was looking for a copy of the operating system for a FLuke 1722. Where I work we had 3 copies and the night shift folks tried all 3 copies before realizing it was a bad drive. These disk each offer different symptoms but are all bad I suspect. How can I get you to get me a copy of this or help me figure out how to save these disks? Any and all help would be appreciated. David Salafia Texas Intruments

19 years

1
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The storage question

by mtapley＠swri.edu

At 8:32 -0500 8/16/07, Jason wrote: >Not disk, but physical space. I broke down yesterday and did what I >said I'd never do to support my habit: I've rented a storage unit. So >now I've got ~1500 ft^3 to help take the pressure off my living space. > I may soon see my floors again! I echo what other list members have said. You will catch a brief glimpse of floor, before it gets buried in more classic computer gear. Might as well clean, vacuum, wax, or whatever, this week, since it'll be the last chance you ever get. Here's a suggestion. Make 3 prioritized lists (examples below >from my collection): 1) With which of the machines I have do I intend to do something? a) Mac Plus - port distributed.net to this b) HP 712 - port distributed.net to this c) Color Computer 3 - program pythagorean triplet search in assembler d) PB3400 - port distributed.net to this .... y) SE-30 - no projects in mind z) Rainbow - no projects in mind 2) Which of the machines I have is really unique or irreplaceable? a) Rainbow, with graphics, hard drive, and 8087 co-processor b) Mac Plus with Brainstorm Accelerator c) NeXT cube with Dimension card d) PDP-11/60 .... y) SE-30 - stock z) Color Computer 3 - stock 3) To which of my machines have I the strongest sentimental attachment? a) Mac Plus - *my* first computer, did my college and grad work on it b) Rainbow - my second computer, duplicate of first machine I assembled c) NeXT cube - my first workstation, totally rocks ... y) SE-30 - scavenged from bottom of closet at work z) PDP-11/60 - waiting for another list member to come pick up :-) Now identify any machine that's on the bottom half of all three lists. In my case, it'd be the SE-30. Put all such machines on Vintage Computer Marketplace *this weekend*. Charge something above "cost of shipping" (since stuff that is acquired free is often thrown away) to be sure the thing has value to its new owner. If no bids on VCM in 2 weeks, put it on eBay, no minimum bid. If no bids on eBay in 2 weeks, *lose it* the cheapest way you can. Goodwill Computerworks, Apple electronics recycling, donate to a local private school, donate to one of the existing or nascent computer museums, whatever. Make sure this process takes less than 2 weeks. If no takers for freebies within 2 weeks, dumpster it. Better a quick death and you don't have to pay for storage while it rusts/deteriorates/loses magnetization for the hard drive bits. If you keep it, it'll die eventually anyway and you'll pay for it (fiscally and emotionally) over the decades it takes to die. During the 2-week VCM and eBay bid periods, expend round tuits on the top end of list 1 above. Having accomplished what you intended, re-evaluate lists (systems will move down list 1 but probably simultaneously up list 3). Repeat process until you can get rid of the storage unit. I say this because "storage unit" == "garbage dump" in my experience, it just takes longer and costs more. Once put into a storage unit, most equipment is dead - it'll never serve or run again, because of the trouble to dig it out and the damage done to it by humidity, time, dust, rodents, and neglect. In my opinion, if you can't climate-control the sensitive parts of your collection and store all of it such that you can be using any part of it within about 10 minutes' of the impulse striking, the collection is too big for you. Of course, YMMV! FWIW, my (relatively small) collection is climate-controlled, with the exception of monitors and the PDP-11/60 (CPU and power supply only), which are in the attic (where it gets hot, but since there's wood flooring and decent ventilation, no obvious humidity/mold problems.) So no, you won't see the SE/30 on VCM this weekend. But there are some printers that I really should dispose of.... >Any advice is appreciated! Heh. Sure hope you meant that literally; apologies if not. -- - Mark, 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

19 years

1
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ROM preservation (Data I/O system 19)

by dkelvey＠hotmail.com

> From: briandixson at tiscali.co.uk> > Hi Chris,> > > > I was looking at your thread relating to the Data I/O Manual and understand> you have the manuals.> > > > I picked a System19 unit up a couple of years ago and it came with the> Unipack & 001, 011 Adapters.> > > > The manual I have only relates to the Adapter Codes & I have no info on the> Unipack Codes for Programming Chips.> > > > Do you have a copy of the codes as Data I/O are no help at all.> > > > Many thanks> Hi Brian I thought Al had a chart on his pdf pages but all I see are manual. I have a wall chart with codes but it is two large to fit into a copier. I can try to copy a bit at a time. Dwight _________________________________________________________________ Messenger Caf? ? open for fun 24/7. Hot games, cool activities served daily. Visit now. http://cafemessenger.com?ocid=TXT_TAGLM_AugWLtagline

19 years

3
2
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shorter 19" racks (was Re: Suggestions for rackmount floppy mounting)

by ethan.dicks＠gmail.com

On 8/14/07, Jim Leonard <trixter at oldskool.org> wrote: > All this talk has inspired me to get a rack. But do such things exist > as "personal" racks and/or half-height racks? Or should I be resigned > to just finding a full-height rack somewhere for $400 and find a place > to put it? (I have only about 10us of stuff to rack -- two scan > converters, two computers, that's it...) 6' and taller racks are the most common in my experience, but there were plenty of 4' and shorter racks made, too. I just picked up a really short DEC rack from Patrick at VCFmw. I'd quote the model number, but it's hundreds of miles away and I can't check the label. It was a semi-common item - it originally contained a PDP-11/03 and RX01 and has approx 21" of rack space (12 U) and a wood-grain Formica top. DEC also made a large number of 42" cabinets with a curved-top profile that was meant to be suitable for office or machine-room environments. They will hold 3 RL02s or a CPU and two drives or whatever (approx 18 U, plus room in the bottom-back for a 3 U power controller (with a kick-plate in the front). A bit older than those were some similar-height racks from the 11/34 and PDP-8/e era with 3"-ish-tall 45-degree bevel/bezel on the top-front-edge, but I think those might be a bit rarer. If you want just your "10 U" and not any more, the table-topped rack I described would work. If, OTOH, you would rather have things more than a few inches off the ground, you could use a 42" rack and load it >from the top down (and have room in the future for more toys ;-) -ethan

19 years

7
8
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The storage question

by marvin＠west.net

> If no takers for freebies within 2 weeks, dumpster it. Better > a quick death and you don't have to pay for storage while it > rusts/deteriorates/loses magnetization for the hard drive bits. If > you keep it, it'll die eventually anyway and you'll pay for it > (fiscally and emotionally) over the decades it takes to die. > - Mark, 210-379-4635 I will rarely dumpster anything computer related ... at least intact :). The motherboards and cards usually have enough gold to be of some interest to gold scrappers (Pax may have more to say about this!) Personally, I have a box that I toss old cards into and sell them every six months to a year. Depending on the gold content, I usually get somewhere around $0.50 - $1.00 per pound. No idea if this is good/bad/indifferent but it sure beats giving it away to the electronic recyclers (we can't through electronics into the dumpster here in Kalifornia.)

19 years

2
1
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3c509b cards to good home

by dgriffi＠cs.csubak.edu

Some time ago I asked if anyone wants a pair of 3c509b ISA ethernet cards. Someone replied, but I lost the email. Who wants them? -- 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?

19 years

1
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My rescue mission

by cctech＠retro.co.za

Hi all Drove up to Johannesburg from Cape Town (about a thousand miles each way) to rescue stuff. Osborne Acorn RISC PC 2 x Archimedes (no keyboards) SAM Coupe Spectrum + DISCiple interface SGI Indy SGI Indigo SGI O2 SUN Ultra 1 I had to leave two of the four monitors behind, no space in the VW Fox, but I did get an Indy presenter. And five or six cameras. Left one SGI monitor (both the Indigo and the O2 can use VGA monitors) and the SUN monitor (I have one available here). Will fetch them some other day. Moral question : I have Solaris 2.5, Solaris 8 and Ubuntu Linux. The Ubuntu complains about not enough memory (there's only 64 megs in there). But I'm more of a Linux guy than a Solaris guy... I did get a few CDs with Irix stuff, including the development stuff, seems like, and Irix 6.2 "upgrade". I'm sure I'll need more than this to get the SGIs up? The Indy looks fine but the O2 only comes up now and then. Havn't tried any of the rest yet. So... tips, tricks, etc? And who has SDIMMs for me? Or for that matter SGI memory sticks, they look pretty weird... W

19 years

4
4
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Suggestions for rackmount floppy mounting

by cclist＠sydex.com

I need to mount some full-height and half-height 5.25" floppy drives as well as a few 3.5" units on a standard EIA rack. Does anyone have any ideas about the best way to go about this would be? Thanks, Chuck

19 years

8
13
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Comdyna GP-6, Minivac 601 documentation

by dkelvey＠hotmail.com

> From: tony.eros at machm.org> Subject: Comdyna GP-6, Minivac 601 documentation> > Does anyone have documentation sets for either of these systems? I seem to recall a while back that someone had a full set of Minivac manuals that were going to be scanned, but I never heard anything more.> > Also, I recently picked up a GP-6 and am looking for a user's guide or other operations manuals.> > Any assistance would be greatly appreciated.> > -- Tony Hi Tony The GP-6 has basic docs on the web someplace. I have a GP-20 but the principles are the same. They have a fast and a slow setting for the integrators. It also has a reset for these as well. If you don't find the Comdyna stuff with a search, I can look for you. Dwight _________________________________________________________________ Find a local pizza place, movie theater, and more?.then map the best route! http://maps.live.com/default.aspx?v=2&ss=yp.bars~yp.pizza~yp.movie%20theate…

19 years

1
0
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Source for TK50 Compactapes?

by derschjo＠msu.edu

Can anyone recommend a good source for Compactapes for a TK50? With all this talk of TK50s & DLT tapes I'm reminded that I have a PDP 11/83 and a MicroVAX 2000 that I'd like to write some OS tapes for, but lack media... I see a few for sale here and there on eBay but I'm not sure I want to go that route yet... Thanks... Josh

19 years

4
3
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DEC Rainbow 100+ Plus

by RodSmallwood＠mail.ediconsulting.co.uk

Hi Thanks for the detailed information. Having found the full set of docs in the box plus my what I remember from DEC, as I was there when this kit was current. I had a general idea as to how it worked. As my other hobby is amateur television (I build ATV repeaters) at least I was able to understand what you said. As to the VR241 I agree. A non working one would be a bit of a challenge. I'm trying to think of another DEC RGB monitor from around that time that might have been used. Do you know I can't actually remember if the one I had at DEC had one monitor or two. My best guess is I had one VR241 on my desk. I certainly used the Rainbow VT220 mode to talk to the SWS VAX for email, printing etc. Yes that's right email in 1983! DEC had a system called AllInOne or DECmail and IBM's system was called PROFS. There were standard DEC cables for the one/two monitor configuration. However I can make up cables from a diagram if needed. Thanks and Regards Rod Smallwood (Now seeking any DEC RGB monitor current between 1982 and 1990) -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Tony Duell Sent: 15 August 2007 22:43 To: cctalk at classiccmp.org Subject: Re: DEC Rainbow 100+ Plus > So phaseII is to locate a VR241 which is the 13" RGB colour monitor > that would have been used with the Rainbow when it was current > equipment. The Rainbow is specified to work with both monitors attached. YEs, you can use both the mono and colour monitors on the 'bow, but you need a special cable (and specialk programming?) Let me explain. The colour video card outputs _4_ video signals, which I call R, G, B, Mono. The 'Mono' signal is mixed with the text video from the 'VT100' circuit on the 'bow mainboard. This is the composite video signal that's sent to the VR201 (yes, you can use a mono monitor with the graphics card) The standard colour monitor is a sync-on-green TV rate analogue colour monitor. The standard cable connects it to R, Mono, B (to the R,G,B inputs on the monito), the 'G' output of the colour card is not used. This means you get green text from the mainboard circuit, and colour graphics. You can make a cable to connect a mono monitor to the 'mono' signal and the colour monitor to the R,G,B signals. You then get the mainboard video on the mono monitor only (along with grpahics, if you program the CLUT correctly), and colour grpahics on the colour monitor. I can send you details of the cabling if you want it Be warend that the real VR241 is a horrbile thing. It's actually a Hitachi chassis, complete with the well-known thick-film circuit in the vertical deflection stage. The PSU is plain crazy, the chopper is driven (indirectly) by a windign on the flyback (line output) transformer. So for the PSU to run, the horizontal deflection circuit has to be working properly. To get it started, there's an astable multivibrator o nthe PSU board that is disabled shortly after power-up, but which gets the chopper going for long nwnough that the delfection circuits can rattle into life. Debugging one of thise is 'fun' for suitable values of 'fun'. Just about all the likely-bits-to-fail have to be working before it'll do anything at all... -tony

19 years

1
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More on racks...

by cclist＠sydex.com

Just found a couple of pages on DIY racks: http://rack.modzone.dk/Worklog_rack.htm http://foobar.wykehamist.com/index.php?id=5 I think that the wooden version (second) would look very nice as a tabletop unit. I'd probably use "biscuits" for the corners unless I wanted to impress folks with my woodworking skill, then I'd make the box of Bolivian rosewood with dovetailed joints... Cheers, Chuck

19 years

1
0
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DEC Rainbow 100+ Plus

by RodSmallwood＠mail.ediconsulting.co.uk

Hi I am part way there in that a kind list member has found a VR201 for me. However having gone through the box of items that came with the Rainbow. Lo and behold the colour/graphics card, its installation manual and its programming manual are all there. My aim for all of my DEC collection is to get the systems back to the condition that they left the factory in. As to software, anything that would have been available to run on the system during its normal life, is a collection target. An now for a quick off topic excursion. I bid for on EBay and got at a very low price an HP DesignJet 750CPlus A0 plotter. Somebody had broken inkjet rule number one. "Never never use refilled or non HP cartridges" They refill them through the vent hole. This enlarges it, air gets in and it leaks. The ink catchment reservoir overflows and ink gets everywhere. So I was presented with a plastic end shell full of low grade black ink. Desperate measures were called for. I turned the pressure washer loose on it. The results were amazing the ink went into solution and got flushed away. Result one totally clean cover. So, at your own risk, dirty plastic may respond to careful use of a pressure washer. So phaseII is to locate a VR241 which is the 13" RGB colour monitor that would have been used with the Rainbow when it was current equipment. The Rainbow is specified to work with both monitors attached. Rod Smallwood (The DEC Collector) -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Tony Duell Sent: 13 August 2007 22:10 To: cctalk at classiccmp.org Subject: Re: DEC Rainbow 100+ Plus > > Hi > I am now the owner of a DEC Rainbow 100 Plus. (10mb Hard Drive and > all) > Its just like the one I had on my desk at DECPark circa 1981=20 The > good news is its got loads of software with it. > The bad news is the tube in the VR201 monitor is shot. > The screen has mould between the tube and bonded on faceplate. > No amount of standard adjustment will make it bright enough to read in > normal lighting. > So... > I need: > =20 > a) A replacement tube. IIRC, the CRT is a pretty generic one, a 7 pin (modified B7G base) with 11.5V heater. I usepect (without trying it) that any 12" 90 degree deflection CRT with those cheacteristics will work. Last time I needed a CRT (to repair a somewhat odd terminal), I found the easiest/cheapest way to get one was to buy a monochrome portable TV and raid it for the CRT. But can you still buy monochrome protable TVs? > =20 > or=20 > =20 > b) a Digital VR201-A , -B or -C =20 > or > =20 > d) A colour graphics card for a DEC Rainbow. 100+ e) A normal TV-rate composite monitor and the right cabling. Basically, you have to wire up an RJ11 socket to the right 4 pins on the DA15 connector for the keyboard, and take composite video (and ground) from another 2 pins. By default the 'bow uses US rates, but I think you can set it to 50Hz vetical on one of the setup menus, so it should be close then to UK rates. Let me know if you want to do this and I can dig out the pinouts, etc. -tony

19 years

2
1
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ROM preservation (Data I/O system 19)

by briandixson＠tiscali.co.uk

Hi Chris, I was looking at your thread relating to the Data I/O Manual and understand you have the manuals. I picked a System19 unit up a couple of years ago and it came with the Unipack & 001, 011 Adapters. The manual I have only relates to the Adapter Codes & I have no info on the Unipack Codes for Programming Chips. Do you have a copy of the codes as Data I/O are no help at all. Many thanks Best regards Brian

19 years

1
0
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Comdyna GP-6, Minivac 601 documentation

by tony.eros＠machm.org

Does anyone have documentation sets for either of these systems? I seem to recall a while back that someone had a full set of Minivac manuals that were going to be scanned, but I never heard anything more. Also, I recently picked up a GP-6 and am looking for a user's guide or other operations manuals. Any assistance would be greatly appreciated. -- Tony

19 years

1
0
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Sydex Floppy Driver

by fcwapp99＠163.com

Sydex Floppy Driver I want to find a Sydex Floppy Driver Plase HELP Me!!a file of sydexfdd.sys5.1 / Windows (R) 2000 DDK provider of otherVersior thank you !

19 years

2
1
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Connecting to Model EZ135A SyQuest drives

by ajwills＠paradise.net.nz

Does anyone have experience with connecting Model EZ135A SyQuest drives (that read 135MB removeable cartridges) to PCs? I think they were originally sold as external SCSI or parallel port devices. The bare drive that I've got has an IDE type interface, but I'm told they don't identify themselves properly on the IDE bus so that the PC BIOS doesn't recognise them. (I'm trying to find a way to read some old archive disks).

19 years

5
5
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Suggestions for rackmount floppy mounting

by feldman.r＠comcast.net

>Message: 14 >From: "Chuck Guzis" <cclist at sydex.com> <snip> >Reminds me of the old-time custom of making rack panels out of 1/4" >masonite. I was thinking about 1/4" polycarbonate and a router (the >machine tool, not the network gear). <snip> My favorite source for aluminum sheet for making brackets, supports, cases, etc., is a cookie baking sheet. They are a lot less expensive than buying metal sheet at a hardware store. Bob

19 years

2
1
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Suggestions for rackmount floppy mounting

by ajp166＠bellatlantic.net

> >Subject: Re: Suggestions for rackmount floppy mounting > From: "Chuck Guzis" <cclist at sydex.com> > Date: Tue, 14 Aug 2007 12:59:35 -0700 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 14 Aug 2007 at 11:11, Mr Ian Primus wrote: > >> Well, if you want the cheap-and-dirty way to do it (my >> favorite way!) you could use a piece of 1/4" plywood >> as a faceplate, cut square holes in it the size of a >> full height 5 1/4" drive, and scavenge some drive >> frames from junked PC mid-tower cabinets. Screw the >> drive frames to the back of the plywood, and paint the >> plywood to match the cabinet. The weight of the floppy >> drives shouldn't be enough so that it needs any more >> support than a few rack screws drilled through the >> edges of the plywood. > >Reminds me of the old-time custom of making rack panels out of 1/4" >masonite. I was thinking about 1/4" polycarbonate and a router (the >machine tool, not the network gear). I could make the side rails >from the same, just solvent-cemented to the front. > >I'm not sure how, using the tools I have to carve big holes in a >thick aluminum blank panel plate. Would a 3 HP router and a carbide >bit do it? Ideally, I suppose a vertical mill would be the "right" >tool, but I don't have access to one. Hand held saber saw (aka jigsaw) with metal blade does fine. I made the disk shelf for my PDP11 (RX33, RD52s, uVAX2000 powersupply, enable/writelocks buttons from BA123). Front plate was a blank and the shelf was another sheet of .100 Aluminum plus some supports salvaged from various older defunct machines. Allison > >Cheers, >Chuck

19 years

1
0
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DLTtape IV cleaner?

by silvercreekvalley＠yahoo.com

Does anyone have a spare/old cleaner tape for a DLTtape IV drive? I have one of these drives installed in an old Sun but the 'head clean' light has now illuminated. Thanks. Ian. ____________________________________________________________________________________ Sick sense of humor? Visit Yahoo! TV's Comedy with an Edge to see what's on, when. http://tv.yahoo.com/collections/222

19 years

8
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DLT cleaning tapes

by jack.rubin＠ameritech.net

Can't find any DLT IV tapes, but I have 3 DLT 1/ DLT VS cleaning cassettes - one almost used up, one half used and one brand new one. Anyone need these? Yours for the cost of postage from 60091 (Illinois). Jack No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.11.17/951 - Release Date: 8/13/2007 10:15 AM

19 years

1
0
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Need some phenolic G pattern Vectorbord

by swtpc6800＠comcast.net

I need some small pieces of phenolic G pattern Vectorbord(tm) for my Vintage Computer Festival exhibit. The G pattern has holes on 0.1 by 0.2 inch centers. I need pieces about 3/4 by 1 1/2 inches (or larger). Here is a photo of a sample. http://www.swtpc.com/mholley/MITS/VectorBord_G.jpg I will trade or pay for it. Does anyone know of someplace that still stocks it? I can reuse old board. I will be reusing the board in the picture. Michael Holley www.swtpc.com/mholley

19 years

1
0
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Prime minicomputer simulator?

by doug.jackson＠ewa-australia.com

Sellam - When I was in school, we had a perfectly functional PDP 11/45 with VT52 terminals (about 16 or so of them). The machine was in the computer room, with all of the hardware accessible (I remember getting into strife when I wrote a program to output human readable text strings to the PTP......) One semester break, they rolled out the DEC machine, and rolled in a Prime. It was horible, and none of us actually got any useful work done for the first couple of months, while we came to grips with the new operating environment. I can't actually say that it was nicer to use than the PDP 11.... It was newer and shinier. (And it lacked the paper tape punch) In fact, I would suggest that the system was so despised by its users, that they had to put it into a cage at the back of the room, because people kept resetting it. The cage didn't work, because somebody discovered that you could still use a long broom handle to hit the reset switch..... Makes you wonder about the sanity of replacing a system that could be kept out in the open, where people didn't muck with it, because it "Just Worked" (tm), with another system that was so despised that users wanted to turn it off? Sorry, no, you won't find an emulator from anybody who enjoyed the DEC hardware..... Doug

19 years

1
0
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DEC Rainbow 100 Plus CRT

by les＠hildenbrandt.com

You might try taking your CRT to a television repair shop and asking to have the CRT "rejuvenated". There is a piece of equipment they may have which will bring back the brightness on your CRT for quite some time. My experience has been one to two years added life the first time the process is used. Additional applications are less successfully. Here is a link to the equipment used for this process on ebay. I have this same piece of equipment and have done hundreds of CRTs with it. http://cgi.ebay.com/Beltron-System-Picture-Tube-Restorer_W0QQitemZ290149557… There is another type of equipment which is made for the same thing which works by sending a spark (high voltage discharge) between the elements in the CRT, I have destroyed picture tubes with that type of equipment. Good luck! Les

19 years

1
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Large computer rescue - any collectors in the VA/PA/DC/WV/NC area?

by wmaddox＠pacbell.net

I am arranging a large vintage computer rescue, and will be on-site Thursday and Friday to inventory the equipment and make arrangements. There will be scrappers coming next week, so time is off the essence. From the most recent photos I have been sent, it looks like there may be more material there than was previously indicated, and possibly more than I will be able to handle. It is likely that I can set aside material for other collectors. I would be looking to get firm commitments over the next few days while I am on-site, as it may be difficult to get the owners to hold on to it otherwise. Material that may be available include Modcomp IIs, IBM 729 keypunch, 9-track tape drives, and possibly some Honeywell gear. Please contact me if you have a serious interest and ability to remove this sort of gear, about 4.5 hours out of DC. -- Bill

19 years

1
0
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SciFil Cons - UK retro show thoughts

by Billy.Pettit＠wdc.com

Liam Proven wrote: I myself would probably tend to edge toward making it a bank holiday long event, with an evening programme of talks and discussions, along the lines of an SF convention, to encourage and foster the social side of it. -- Second reference I've seen on the list to science fiction conventions. I'm curious. How many list members have been to a sci-fi convention or even know about them? Anybody been to any WorldCons, Westercons or EasterCons? I know Chris Garcia is active in fandom. Anybody else? Semi-OT since many of the cons are heavily computer/robot leaning events. In the early days, it was about the only place that computer geeks could gather and be respected as peers. Billy

19 years

6
5
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EF360U CMS Enhancements Parallel External 5.25" Floppy Drive

by lynchaj＠yahoo.com

Hi, Does anyone have the DOS drivers for the EF360U CMS Enhancements (or CMS Products) Parallel External 5.25" Floppy Drive? If so, please post them or send them to my email. I am looking for them as part of a request on USENET comp.os.cpm for a portable external 5.25" floppy disk drive to recovery legacy data from vintage microcomputers. Thanks in advance if you can help. It is much appreciated. Andrew Lynch

19 years

1
0
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SGI Onyx2 Reality Monster For Sale

by nathank＠gmail.com

Located in a climate controlled warehouse in Santa Clara, CA Unable to Power up to get HINV, sorry. Silicon Graphics, Onyx2 Reality Monster 5 Racks, one with MMSC Display (5 MMSC Modules) 4 x 18GB IBM Hard Drives 4mm Tape / exobyte 8 mm Tape / CD Rom 16 Processors (??? Mhz) 12 GB Ram 6 Graphics Pipes 4 x RM-9 per pipe Infinite Reality 2 Graphics Engine 6 x GE-16 6 x DG5-2 6 x xtown 6 x ktown Craylink & Crosstown Cables, Monitor Connection Cables Any reasonable offer considered. -Nate

19 years

1
0
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Wang items

by wdonzelli＠gmail.com

I have a medium sized Wang system available for free, snagged with a bunch of Data General equipment I was saving for a fellow list member. Neither of us are Wang fans. This is a Wang VS45, with a console terminal, printer, a comms box, and a Wang/CDC 80M 14" drive. Included is an unopened pair of boxes, apparently a Wang enlargement kit, to get this machine up to a VS65 - probably some boards, a new power supply, but no special cremes or pumps. There is software (VS operating system distribution) and docs, but these may go to Al. I am not sure about this yet. The VS45 is a cube about 2 by 2 by 2 1/2 feet, but really not very heavy (200-250 pounds). The console is remarkable, as it is the only Wang tube I have ever seen that is not screen burned. The printer is a pretty standard printer, about 70 pounds. The comms box is not too big either. I can probably deliver reasonably close to 10512 quite inexpensively. Of course, if someone a few hundred miles away wants this stuff, I can also deliver for a reasonable charge. I do not really expect to get anything for the machine, although I would not turn down a trade or bribe. -- Will

19 years

2
1
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Simulating VAX/VMS in SIMH

by sellam＠vintagetech.com

Dennis Boone said: > Not sure about the older VAX code in simh, which emulates a MicroVAX > 3900. HP claims 5.1-1 supported that real hardware. But the newer > 11/780 simh variant ought to be able to run older versions of VMS. You know what? I am lame. I didn't realize SIMH could do the VAX 11/780. After searching around a bit I read a message from Bob Supnik circa 2004 saying that making an 11/780 simulator would require practically a whole new simulator and then assumed that no one went forward to make one. Duh. Anyway, thanks for the tip. Now, does anyone know where I can get VMS 3.2? ;) -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

19 years

2
1
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Simulating VAX/VMS in SIMH

by sellam＠vintagetech.com

I have some questions about simulating early versions of VMS on a VAX using SIMH. >From reading the docs it seems that the earliest version of VMS that can be run is 5.5-2. Has anyone successfully run an earlier version of VMS? Also, are there images of VMS 5.5 floating around that I can use? -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

19 years

3
2
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March 11, 1977 original ADVENT code found?

by jfoust＠threedee.com

Old backup tapes to the rescue! http://games.slashdot.org/article.pl?sid=07/08/14/011230 http://jerz.setonhill.edu/if/crowther/ - John

19 years

2
1
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cctalk Digest, Vol 48, Issue 29

by mtapley＠swri.edu

At 12:07 -0500 8/13/07, Rod wrote: > I am now the owner of a DEC Rainbow 100 Plus. (10mb Hard Drive and >all) Congratulations! >The bad news is the tube in the VR201 monitor is shot. >The screen has mould between the tube and bonded on faceplate. Just to be sure, you have checked and it's not the anti-glare coating causing the problem? I remember multiple tales of dirty screens causing dim monitors, etc.... I do have a VR-201, but a) it's in Texas, and b) it's intended for my Rainbow. Hopefully there will be more useful info elsewhere. > d) A colour graphics card for a DEC Rainbow. 100+ That still leaves you seeking an NTSC-rate color monitor, though, such as a VR-241. I think those may actually be harder to locate than VR-201's. But see Ethan's suggestion - that might be pretty useful. -- - Mark, 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

19 years

2
1
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UK retro show thoughts

by swtpc6800＠comcast.net

I won't be able to make a UK show this year but I did make it to one in 1981. (I live in Seattle WA.) He is my 1981 write up of the London Computer Faire. http://www.swtpc.com/mholley/MySystem/LondonComputerFaire.htm I will be exhibiting at VCF 10 this November. Michael Holley www.swtpc.com/mholley

19 years

1
0
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68661 EPCI woes. Now fixed, thanks

by river＠zip.com.au

Hi, Thank you for your replies, and the emails I received directly from those learned people who assisted me. I was setting the Mode Registers incorrectly, and I now have the 68661 running sweetly on an expanded SDK85 system. Seeyuzz River

19 years

2
1
0 0

Elan Enterprise 64k - PSU spec?

by javickers＠solutionengineers.com

Hi, Does anyone here have an Elan Enterprise 64k with its PSU - and, if so, can you please tell me what the power in specs are (i.e. DC voltage & pin polarity)? Many thanks in advance, Ade. No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.11.15/949 - Release Date: 12/08/2007 11:03

19 years

1
0
0 0

For sale: Kyotronic KC-85 portable

by peter＠vroomvroomvroom.com

Are you still selling this for $50? Please let me know. Kind regards. Peter

19 years

1
0
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Looking for info on VT284 and VT286

by Veronica_Bell＠mindspring.com

Hello Dan, How are you? This is Veronica @ EPM. I am looking for a VT-284 Computer. Would you happen to have one in stock? Please email me and let me know what price and a leadtime on it. Thanks! EPM Veronica Bell 809 Tradesmen Park Lp, A Hutto, Texas ph-512-759-2325 fax-512-846-2570 email:veronica_bell at mindspring.com website: electronicprecision.com

19 years

1
0
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UK retro show thoughts

by lproven＠gmail.com

I've tried to make a couple of points which seem to have sunk unnoticed. While you're all happily arguing about the comparative virtues of various models of generator, I have pointed out that there are already very large-scale computer shows happening in the UK on a regular basis: the commercial LAN parties. If a venue can handle a thousand plus PCs, it can handle a few hundred vintage computers. These places would seem to me to naturally be high on the list of candidate venues. I asked for commentary about the venue for the largest of these, Multiplay. http://www.multiplay.co.uk/ There is one this coming weekend. Perhaps someone in the area - Newbury - could pop over and check it out briefly and report back? Are listers even /aware/ that there are multiple such events every year in this country with literally *thousands* of gamers attending, the majority bringing their own hand-built high-end customised PCs to play on? The custom PC building fraternity is probably the biggest computer enthusiast scene or group in the world today. It's relevant to us. Highly relevant, I submit; their attendees could be some of ours, for a start, and their organizers could potentially tell or teach us a lot. Secondly, there is an existing UK retrocomputing event, although it's not that regular. It's CGE-UK. Here are a couple of reports from past ones: http://www.ukretro.co.uk/cge2004.htm http://www.consolepassion.co.uk/cge-show-report.htm http://www.acornelectron.co.uk/eug/revs/misc/r-cge.html I was at one of these - I don't remember now if it was '04 or '05. It was good fun. Strong games emphasis, which is of little interest to me, but a vast amount of fascinating hardware - all manner of 1980s exotica and obscurities, plus stuff from the '50s, '60s and '70s. For instance, as a child of the (computing) 1980s, I punched my first ever punch card and I handled some core store for the first time in my life. Several list members were there exhibiting. Care to stop debating generators and start making some constructive suggestions, folks? :?) For what it's worth, I was (somewhat peripherally) involved in the running of the 2005 World Science Fiction Convention in Glasgow. I know a lot of people involved in running SF cons and have some useful contacts from that field; I attend up to half a dozen such events a year. This may not sound terribly relevant, but the Worldcon is the largest amateur-run event of any kind in the world and it happens without fail every single year and it's been running for more than 60 years now. There is much we could potentially learn from them. They know how to put on a big event for hundreds or thousands of attendees with no professional help or involvement and a starting budget of zero or close to it. -- Liam Proven ? Profile: http://www.linkedin.com/in/liamproven Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419 AOL/AIM/iChat: liamproven at aol.com ? MSN/Messenger: lproven at hotmail.com Yahoo: liamproven at yahoo.co.uk ? Skype: liamproven ? ICQ: 73187508

19 years

3
3
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UK VCF?

by Billy.Pettit＠wdc.com

Roger Holmes wrote: To which the answers (so far) are (including someone else's very valid question of where they are): [snip] So we have 23 people interested, very few exhibitors and a large geographic spread but with clusters in Yorkshire(5), Manchester(3) and London(2 plus 2 nearby). ------------------------------ Please add me to the list. If it is held during the 5 or 6 months we spend in England every year, I will go to the show wherever it is held. Our house is in Colchester. Billy Pettit

19 years

4
3
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FORTRAN T-shirt (Brent Hilpert)

by brian＠quarterbyte.com

Wow, Chuck, that was some great sleuthing there! Thanks. I'm still wondering how on earth that demonstration snippet ended up on a T-shirt, but the owner really wasn't interested in talking about it. First off I don't think he spoke much English, second, I speak hardly any Spanish, and third, I think he found it impossible to imagine that someone was really that interested in the shirt. He probably thought I was hitting on him. (I have to admit, it's one of my more tired pickup lines: "Hey, is that FORTRAN on your shirt?") In any case he kind of squirmed around and wouldn't stand still long enough for me to really read it carefully. I had a second, third and fourth glance at it as we snaked through the check-in line at the airport. Interesting that the last word of that "STATEMENT NOT IN LANGUAGE" was missing from the shirt. Anyway -- thanks for solving the "Where did it come from?" half of the mystery. The "How did it get here?" part I'm afraid is unanswerable. Brian > The source is easy to recognize--and I'm surprised that more folks > didn't recognize it--IBM QUICKTRAN. It took quite a bit of digging > just to find a reference on the web, however: > > http://www.sciencemag.org/cgi/issue_pdf/frontmatter_pdf/149/3683.pdf > > The article (page 497) appears to be the source of your T-shirt. > > Cheers, > Chuck =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _| _| _| Brian Knittel _| _| _| Quarterbyte Systems, Inc. _| _| _| Tel: 1-510-559-7930 _| _| _| http://www.quarterbyte.com

19 years

2
1
0 0

SCSI TK50 and writing tape

by ian_primus＠yahoo.com

My attempts to boot the MicroVax continue: After much digging around at the house, I finally found another TK50 cartridge. This one is in good condition. I cleaned my SCSI TK50 drive, and mounted the tape. It read fine, I was able to dd the contents (one ~70mb VMS data file, with header and trailer) off the tape and onto my PC. So far so good. I erased the tape, and tried to write the NetBSD boot.fs to it. dd if=boot.fs of=/dev/nst0 bs=512 And the drive whirred to life, shoeshining tape back and forth,but actually making progress through the media (it was accumulating on the take-up reel, anyway). So I let it run. Eventually it failed with an I/O error at a point where most of the tape was out of the cartridge. It took over an hour to get there, and only made it through one length of tape (no track change/reverse) Rewind, erase tape again. So, I tried just plain 'dd if=boot.fs of=/dev/nst0' without specifying the block size (although from what I've read, NetBSD wants a block size of 512 to boot) That shoeshined like crazy too, so I stopped it. Try again, with a block size of 16k (the same block size I used to read in the tape). Still no go, it still shoeshines, but not quite as much (barely). What do I need to do here? How long should it take to write two and a half megabytes of data to tape? Thanks! -Ian

19 years

7
11
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68661 EPCI woes. Can anyone help?

by river＠zip.com.au

Hi, I've connected a 68661 EPCI (Enhanced Programmable Comms Interface) chip to an 8085A system. It is the "C" variant, so it requires the 5.0688Mhz Xtal. It's all connected right, and I checked with the CRO and it is being selected and the 5.0688Mhz TTL signal is accurate and clean. However, the terminal it connects to just gets garbage or sometimes doesn't show anything at all. I put a CRO on the Tx line and the signal is RS232 compliant and data is going out. I tried the terminal with a working system and it works fine. I think I may be programming the chip wrong. I assume, according to the literature, that I set up the Mode register for Internal clock x1 internal clock for async comms. I then program the necessary 4-bit code for the speed I want. However, the datasheet shows the speeds with x16 clock. So, I tried programming it with x16 internal clock, but still no luck. Also, the data sheet says when using async that you use the x1 clock - which I did originally - yet the sheet shows the speeds with x16 clock. I'm very confused. All I want is 2400bps, 7data, no parity, one stop bit async. Has anyone used the 68661? Seeyuzz River

19 years

4
3
0 0

Modern PC's and old ATA drives?

by healyzh＠aracnet.com

I'm trying to recover data from an old Conner CFS420A (420MB) Hard Drive for someone. http://www.seagate.com/support/disc/specs/ata/cfs420a.html I've tried hooking it up to my two IDE-to-USB cables, I can't see it on my Mac when connected to either. I can see it on my WinXP system when connected to the older cable (which oddly enough doesn't like most HD's I've plugged into it). However, I don't see any sign of partitions. When I plugged it directly into the motherboard, the BIOS complained and seemed to indicate 0MB. Do modern PC's have a problem with really old HD's? I'm told that either Win95 or Win98 was on the drive. Will a HD report info about itself, even if it is dead? Thanks, Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

19 years

6
8
0 0

EPROM Programmers... on the cheap

by Billy.Pettit＠wdc.com

woodelf wrote: Unicorn Electronics has 1702's still* listed for $4.99. --------------- My only order ever to Unicorn was for some TTL parts back on 22nd of June. I tweaked them a month later and got a reply that parts were back ordered, would ship in a week or so. Last I heard from them. What is your experience with Unicorn? Did they actually ship parts to you? Their prices are good, but I would pay a little more to get parts I need. Or at least an "out of stock" notice after 7 weeks of waiting. Billy

19 years

5
5
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Mac Plus success - clean contacts!

by mtapley＠swri.edu

All, another update on my Mac Plus - previously, I've had trouble with getting the +5V supply adjusted right, and noticed that reseating the power cable connectors helped. This time, I actually took some measurements. Looking from the solder pad on the far side of the power board, through the connector, the cable, and the connectors on the digital board, to the solder pad on the far side of that board, I saw anywhere from 1 to *5 Ohms* through that cable. No wonder it was not reliable! I'm astonished it ever ran long enough to get through the RAM checks! Pulled off both connectors, ran a VOM probe back and forth through each slot on both ends of the cable a few times. Got some 400-grit sandpaper and lightly sanded the pins on the board connectors, swabbed them off with Q-tips and isopropyl alcohol, then swabbed on a trace amount of silicone oil (in hopes that it'll be a while before I have to do this again). Resistance measurements, after reassembly, went down near enough 0 that I would not attempt to put a number on them other than << 0.2 Ohms. Pulled out all of the SIMMS, scrubbed their contacts with Q-tips and isopropyl, and re-installed. Reseated the CPU (Brainpower Accelerator daughterboard). Tuned the +5V supply back *down* a little, to about midway between where it would crowbar and where it wouldn't start (This looked on my ancient VOM to be around 4.95 V). System has been running solidly for several days now, through multiple power cycles and multiple extended play sessions. My 6-year-old is getting reacquainted with Dark Castle and Sim City. Hope this is useful; questions welcome! -- - Mark, 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

19 years

1
0
0 0

Can someone tell me what this means?

by cclist＠sydex.com

This from today's New York Times story at http://www.nytimes.com/2007/08/11/technology/11novell.html about SCO losing its claims to ownership of Unix: "The Unix operating system, which has become popular with some independent-minded PC users as well as in the corporate world, was developed by AT&T researchers at Bell Labs beginning in 1969. During the 1970s, the operating system became highly influential in academic computing and in computer science departments. In the ?80s, it had a significant impact in the computer workstation and minicomputer markets, although it never gained a significant foothold in the personal computer business until Steven P. Jobs brought a version of Unix with him when he returned to Apple Computer in 1997. Some PC makers have begun to offer versions of Linux instead of Microsoft?s Windows operating systems." What does Apple and Steve Jobs have to do with Unix? Cheers, Chuck

19 years

21
49
0 0

DEC Rainbow 100+ Plus

by RodSmallwood＠mail.ediconsulting.co.uk

Hi Thanks.. Yes I knew about the feed another monitor with comp video idea (I do a bit of amateur television) However, a real VT201 has turned up in the UK. This is going to be really nice, I have a huge heap of software all specifically for the Rainbow. Or will it be "How much have I forgotten in 25 years" Next task = find the colour graphics adapter that goes with the Rainbow (after making sure this one has not got one) Regards Rod. -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Ethan Dicks Sent: 13 August 2007 13:24 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: DEC Rainbow 100+ Plus On 8/10/07, Rod Smallwood <RodSmallwood at mail.ediconsulting.co.uk> wrote: > Hi > I am now the owner of a DEC Rainbow 100 Plus.... > The bad news is the tube in the VR201 monitor is shot. > > So... > I need: > > a) A replacement tube. > > or > > b) a Digital VR201-A , -B or -C > > or > > d) A colour graphics card for a DEC Rainbow. 100+ > > > Anybody knowing the whereabouts any of the above please contact me. You have another option... the video input to a VR201 is NTSC "composite video", also called RS-170. I see you are in the UK, so an NTSC monitor might not be as easy to find as a VR201, but will work if you have one handy. I made a DA15-RCA cable years ago to hook a VR201 to an Amiga 2000 that I used as a hardware test platform (so I didn't care about a lack of color). I have to admit that I haven't "gone the other way" and used a non-DEC monitor on a Rainbow, but there's no reason to expect it won't work. I recently saw my Amiga cable, but the VR201, unfortunately, fell off the workbench some years ago, and the tube bit the dust. I pitched the plastic housing and saved the analog board, IIRC. -ethan

19 years

1
0
0 0

DEC Rainbow 100+ Plus

by RodSmallwood＠mail.ediconsulting.co.uk

Hi I am now the owner of a DEC Rainbow 100 Plus. (10mb Hard Drive and all) Its just like the one I had on my desk at DECPark circa 1981 The good news is its got loads of software with it. The bad news is the tube in the VR201 monitor is shot. The screen has mould between the tube and bonded on faceplate. No amount of standard adjustment will make it bright enough to read in normal lighting. So... I need: a) A replacement tube. or b) a Digital VR201-A , -B or -C or d) A colour graphics card for a DEC Rainbow. 100+ Anybody knowing the whereabouts any of the above please contact me. Rod Smallwood

19 years

6
6
0 0

Tandon TM-100-4M curiosity

by cclist＠sydex.com

I was looking at a bunch of Tandon TM100-4M floppy drives that I've had for a (very) long time and saw something that never registered with me before. On the underside of the disk release latch (on the faceplate), a small silver sticker. Most say "100 TPI DSR", but about one in every 4 says "96 TPI DSR". All drives are 100 TPI TM-100-4Ms, BTW as identified on the body sticker. Cheers, Chuck

19 years

4
11
0 0

Burners - was newbie building a scratch-built computer

by Billy.Pettit＠wdc.com

Mike Ford wrote: Look around a bit and I am sure you will still find cheap and cheesy solutions, PC cards or something off the parallel printer connection. --------------- Maybe that is something I can sell at the next VCF. For years, I bought burners when I saw them but never used them. I know I have some of the parallel port types, plus some that plug into PC busses. Even a couple that work on the Apple II. And recently, I bought a spate of Data I/O 19's, a couple of 29B's and several other assorted models. I usually tear them apart for the parts and toss the chassis. Although the Data I/O 100 has the perfect chassis for a project I am working on, so there I kept the chassis and tossed some of the parts. Did the same for some HP 1611 Microsprocessor Logic Analyzers. Maybe I should take them to the VCF to sell? Most flea market buyers don't seem to know what they are. Billy

19 years

5
5
0 0

Tandon TM502/Tandy 2000 problems

by rcini＠optonline.net

All: I?ve been working for a while on resurrecting the hard drive system of my Tandy 2000. The short story is that I have two systems with TM502 hard drives, both of which failed after a few uses (both were donations to me earlier in the year) and were no longer recognized by the system. Running the format program from Tandy DOS (MSDOS 2.21) fails to recognize the drives. I jacked one into a MFM controller on an older PC, re-ran the low-level format and formatted it with DOS 6.22. I then verified that it booted. I moved it to the T2k, where it was not recognized again, but this time, I was able to run the formatting program and now it?s usable from DOS 2.21. So, the hardware is good and I guess running the low-level formatting program >from the ROM (g=c800:5) reinvigorated the drive. Since it seems that the low-level formatting has gone south on these drives, is there a non-destructive low level formatting program that?s good for this? I vaguely remember Spinrite, but I no longer have a copy in my box-o?-disks. I don?t want to destructively format the second hard drive since it has lots of programs on it from the person that sent it to me and I?d like to recover them if possible. I even wonder if the remaining drive can be resurrected at this point with the data intact. Oh, for those interested, the Tandy controller happily uses an ST-225 (20.1mb) drive as an alternate. Thanks for any info. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

19 years

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Strange DC-style cartridge ID

by cclist＠sydex.com

I've dug out an old Adic tape drive and thought at first that it used standard DC-300 or DC-600 cartridges. But every time I put a cart in the unit, the tape would spin for a couple of seconds and then the error light and alarm would come on. Poking inside the cabinet, it's very obvious that the DC-600 type of cartridge has the correct form factor, but that this unit doesn not employ optical sensing of BOT/EOT, etc. There are no optical sensors at all. I'm not certain, but I don't even think a conductive foil sensor is used either. It appears that the tape must be preformatted with some sort of prerecorded pattern to identify the beginning of tape. Anyone have any idea of what kind of tape this thing takes? Cheers, Chuck

19 years

1
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Modern PC's and old ATA drives?

by jfoust＠threedee.com

At 03:46 PM 8/12/2007, Rob wrote: >I had a drive behave like this once. Rather than trying to get >Windows to recognise it, I recovered most of the data using a prodct >called R-Studio <http://www.r-tt.com/> - looking at their website the >software should identify and cope with pretty much anything, They've >a downloadable demo so you can see if it will work for you.. I used >it on a FreeBSD drive, via a USB-IDE adapter on a WInXP laptop, so a >old Windows drive should be a doddle. Yes, I own R-Studio, too. It can work if and when the drive has fully "come alive" in terms of the IDE bus and/or USB/Fw adapter and the operating system's view of the device. - John

19 years

1
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Modern PC's and old ATA drives?

by robert＠irrelevant.com

On 12/08/07, Zane H. Healy <healyzh at aracnet.com> wrote: > I'm trying to recover data from an old Conner CFS420A (420MB) Hard > Drive for someone. > http://www.seagate.com/support/disc/specs/ata/cfs420a.html > > I've tried hooking it up to my two IDE-to-USB cables, I can't see it > on my Mac when connected to either. I can see it on my WinXP system > when connected to the older cable (which oddly enough doesn't like > most HD's I've plugged into it). However, I don't see any sign of > partitions. > I had a drive behave like this once. Rather than trying to get Windows to recognise it, I recovered most of the data using a prodct called R-Studio <http://www.r-tt.com/> - looking at their website the software should identify and cope with pretty much anything, They've a downloadable demo so you can see if it will work for you.. I used it on a FreeBSD drive, via a USB-IDE adapter on a WInXP laptop, so a old Windows drive should be a doddle. Rob

19 years

1
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FORTRAN T-shirt

by brian＠quarterbyte.com

I was getting on a bus in Playa del Carmen, Mexico yesterday and ran into a guy wearing a T-shirt whose decoration was a bunch of FORTRAN code. The wearer said he didn't know its background or what it meant or came from. Maybe it was something cooked up by a graphic artist who just thought it looked cool, but if it was from a real system, it's something I didn't recognize. It was some sort of interactive system. Here is what it looked like, structurally, more or less, from memory. *READY A = 3+3 *READY A = 6 *READY *READY PROGRAM TEST *READY DIMENSION B(6) *READY READ(3,10) (B(I),I = 1,6) *READY 10 FORMAT(6F10.5) *READY DO 20 I = 1, 20 . . (and so on --- about 30 lines of ordinary fortran code here) . *READY 20 CONTINUE *READY GOAT 2 STATEMENT NOT IN *READY GOTO 2 *READY 30 CALL XPLOT(B,10) *READY STOP74 *READY END Each line started with *READY, except for the blank line, the line with the result 6 and the line with STATEMENT NOT IN. The font looked like standard ASR33 teletype. Does this format look familiar to anyone? The bit about prompting for each line with *READY is something I've never seen. It also appeared to do some preliminary syntax checking, as it flagged the line "GOAT 2" with an error message (which was itself grammatically incomplete). Any recollections on this one? Brian

19 years

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FTGH: Sun ELC motherboards, odd k/bs, misc cables, portable terminal - UK

by listmailgoeshere＠gmail.com

Hi cctalkers, The following have to go, within ~14days or they get binned. 4 x Sun ELC motherboards. 3 of these are complete with socket board (so form a complete headless Sun machine if you add SCSI disk and run them from a PC PSU - they have stub cables to wire the PSU to), the third (which has no RAM) isn't, so is only good for spares or upgrading an SLC. There are 10base2 AUIs with all of them. Post on these in the UK will probably be ~?2. 1 x k/b marked "MICROCOLOUR Graphics" in top right corner. It has VT220 layout, but the connector is a DE9 with only 5 pins fitted. Brand new, still in wrapper. On the base is a sticker "part no: EK000ZH01, model no: M2220D". UK post probably ~?4. 1 x Liberty "VT220 style" k/b, suitable for the Liberty Freedom One terminals I gave away on this list last year. RJ11 plug, could work on other terminals as well? Brand new in original box. Again, post about ?4ish. Also, one unboxed but good condition used one. 2 x LK411 (VT510) terminal k/b. VT220 style but with a PS/2 connector. Post probably ?4ish each. 1 x k/b for Falco 220 (?) VT220-clone. Ade Vickers may still have the terminal this belongs to, if you fancy it. Postage ?4-ish. 4 x BA35X PSUs for BA356 disk arrays. Standard IEC mains connector, marked 100-240V 50/60Hz so OK anywhere. 3 are grey/green, one is blue. Postage probably ?4 each. And a load of odd cables (all new in mfr's bags), post ~?2ea: 1 x Selectronix "Xtreme" SEL-2276-0100, 2 HD50 females to what looks like an HD100? Male. 4 x Cisco Systems "Cable pair SMB to BNC - female" (3 cables per bag, 4 bags in total) 2 x 15-pin D to what looks like Cisco serial, labelled "CAB X21 MT, 10 METRES". 3 x 15-pin D to 44-pin 3-row D, labelled "BAY 7224 8 METRES" 1 x DB25 M to DE9 F, labelled "38YCN00001SDY 23/01 CTL 83443" oh, and 1 x GR Electronics "Pocket VDU" portable terminal. (Rusty) DB25 F, 2-pos slide switch and 10-way DIP sw on rear. Unit is about 10" tall, about 7" wide @ widest, and about 1.5" high. 2-line LCD. Please mail if you want any. Ed.

19 years

1
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wtb: Micronics M54Pe

by bear＠typewritten.org

On the off chance somebody has an M54Pe stashed somewhere, I'm looking for one. Contact me off list, please? This is a PCI/EISA, full-AT dual Pentium mainboard. Some models have PS/2 keyboard and mouse ports; I'd prefer one without but will consider either. Thanks! ok bear

19 years

1
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MicroVax II diagnostic tape?

by rick＠rickmurphy.net

At 12:53 AM 8/12/2007, Ethan Dicks wrote: >On 8/6/07, Rick Murphy <rick at rickmurphy.net> wrote: > > XT2190s (RD54s) aren't cheap, they're noisy as hell, and > > aren't very big. > >How "not cheap" are they these days? They are large enough for VMS >6.0 - I've done it. OTOH, there wasn't any room left for anything >else, and I did have to trim off a few things to make it all fit, but >it does come up and boot on my rather-stock uVAX-II. They fetch $300 or more per drive on eBay. >By even semi-modern standards, though, I'd agree with you that 154MB >just isn't that much room for later versions of VMS or Ultrix, but VMS >5.x and on down fit just fine, if that's what you want to run. Yup. When I had a uVAX here I used three RD54s with VMS 5.4 on the first drive. As long as you're careful it works OK. Putting the swap onto another drive helps remove some of the space crunch. One advantage of these drives is that they're pretty reliable, unlike RD53s. > > As several people have pointed out, you're far better off with non-DEC > > storage controllers and devices. > >Agreed. I managed to locate a Qbus SCSI controller a while back, but >I've had other DEC machines in the queue head of any MicroVAX work, so >I haven't been able to put a system together yet. I tried for a SCSI controller for a long time but wasn't willing to pay the price. I eventually gave away the VAXen and just moved to SIMH. -Rick

19 years

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Can someone tell me what this means?

by roger.holmes＠microspot.co.uk

> From: Patrick Finnegan <pat at computer-refuge.org> > On Saturday 11 August 2007 17:55, Roger Holmes wrote: >> Anyway, do things like QuickTime, OpenGL and Quesa exist on Linux? > > QT: xine, mplayer. Both are way more compatible with more formats > than > Quicktime is. QT and Window Media Player don't come close to > supporting all the variants of just MPEG-4, that xine/mplayer do. I see. Thanks. > > OpenGL: It's called the same thing on MacOS, Windows, Linux, and every > other UNIX. There's lots of high-performance graphics work that gets > done on Linux boxes with nVidia cards. I understand that 'Open' in this context does not mean open source, just an open specification. Apple, Microsoft and presumably the Linux volunteers had to spend a lot of time writing their own versions. I also understand that Microsoft's version is getting left behind and may be axed at any time. Maybe I am out of date on this though as we don't currently have a windows versions of our 3D products, only the 2D ones. > > According to Quesa's website, "Quesa currently supports Mac OS 8/9, > Mac > OS X, Linux, and Windows." Yes I should have known that, sorry. > >> It would take me time I do not have (and human memory) to keep up >> with what is and is not in yet another operating system. Apple >> spends a lot of money keeping developers like me up to date with >> their developments, I presume nothing similar is done with Linux. >> What spare time I have is more enjoyably spent of classic cars and >> classic computers. > > I don't understand what to make of this. Basic OS API features > tend to > change slowly... and if you want to keep track of GUI or other random > library/toolkit updates, just pay general attention to the mailing > lists they have, download new versions as the come out, and see if > your > code still compiles against them. Speed is relative. If you have a million lines of code to keep up to date and sales revenues only allow you to employ yourself and one other programmer, then the speed of development is not sufficient to keep up with API, OS and processor changes AND add the features, which you need to stay competitive, to your programs. One of our programs, which was first issued soon after the first Macintosh shipped, has been rewritten from Pascal and assembler into C/C++, its basic drawing engine has been changed from using QuickDraw to using Quartz, the user interface has been partially rewritten to use Quartz/ Carbon and look like Aqua, but a lot more needs to be done. The printing side has been updated to use use the OS-X printing model rather than the OS1 to OS9 model. The clipboard handling has been changed many times and needs to be changed again to support PDF input rather than PICT vector format. Its been moved from 68K to PowerPC and now to Intel. Its been moved from development on Lisa to MPW on Mac, to CodeWarrior and now onto X-Code. Debugging has moved from 2 machine debugger to MacsBug to CodeWarrior's debugger to GDB under X- Code, and not always for the better. GDB under X-Code is still not as good as CodeWarrior, it fails to show some variables, cannot display dynamic arrays except as a hex memory dump and cannot single shot over some C++ constructors. Another program has been updated from using QuickDraw3D to using Quesa, from using PowerPC to Intel (with lots of endian problems), >from using PowerPlant under CodeWarrior to using Cocoa under X-Code. Its been partially re-coded from C++ to Objective C. We've only re- issued two thirds of the program, dropping the less useful features until (if ever) we get the time to do the more exotic parts. Its been changed from the classic event handling system to Carbon events. Its been changed from using a single processor to using multiple processors in critical parts. From using resources and Resourcerer to using NIB files with Interface Builder (despite that, in my opinion, Interface Builder is still incomplete and that MacOS is still not as well documented as OS9). I could go on, and that's just two programs of all the ones we ship. > There's been some issues with newer versions of GCC breaking older > code, > but in general, if that happens, its because your code was written > poorly and not to the language specifications. It been moving TO GCC that is one of the problems. It does not allow temporary variables which need to be constructed, to then be passed as procedure parameters. Debugging of anything using templates is very confusing (presumably because the compiler does not output the correct source code references), displaying source code which has nothing at all to what its actually executing so that you have to look at the object code, which is Intel code which is another learning curve I need to master to add to my repertoire of a dozen or so machine codes. Any recommendations of a good book on the latest Intel processor instruction set? GCC does not even generate very efficient object code when optimisations are all turned on. > Worst case, you can just install whatever version of the libraries > your > app uses along with the app in some out of the way place, and ignore > changes to the system libraries, GUI, etc, pretty trivially. Rather difficult when the libraries are in PowerPC code and you're running on Intel, and when the libraries make OS calls which are no longer available.

19 years

1
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Can someone tell me what this means?

by compoobah＠valleyimplants.com

> While Mac OS X has a UNIX layer under the hood, the GUI is where it > is less than compatible. While X-Windows is available, and so can > run UNIX GUI applications, most Mac users don't even have it > installed. Most Mac applications are written for the native Mac OS X > GUI. While most UNIXes have X, X isn't necessary for UNIX. I have (and I know most people on the list probably also have) several Unices where X isn't included, one UNIX where X is optional (standard display is NeWS), and two Unices with something completely different. I will confess to happily running Linux and OS X, and Linux makes a darn good can opener for assorted disks &cet. The number of different UI toolkits (and desktop environment support libraries/etc) that you wind up installing is somewhat outrageous, especially when you consider that many of them seem to be pretty much copying the UI of Windows.

19 years

2
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NEC FD 1035 3.5" Floppy jumpers?

by cclist＠sydex.com

Just dug a couple of these out of my hellbox. Old full-height 720K floppy drives. I can find a product description on bitsavers, but no jumper information. I can probably guess what most are, but I'd like to have some hardcopy info on file if possible. Cheers, Chuck

19 years

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CNET Collectible Computers

by marvin＠west.net

> From: Patrick Finnegan <pat at computer-refuge.org> > On Saturday 11 August 2007 17:26, Marvin Johnston wrote: > > They are not only wrong, but rather vague! But for their list of the > > top 5 collectible computers, take a look at: > > I don't see how you can say that they're wrong. It's *CNET*s top 5. > Just like Bill or Joe's Top 5. Ie, the 5 machines that the people at > CNET who wrote the story thought were most collectable. Actually, when I first wrote it, I had a smiley at the end. They are welcome to their ideas, but with nothing to indicate how they came up with these five and what *their* qualifications for making the list, the list is rather worthless. Much like the person who put an Apple IIe up for sale on Ebay at $5K or so.

19 years

1
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MicroVax II diagnostic tape?

by ian_primus＠yahoo.com

Well, I've been playing with some machines I haven't had time for before (not that I really have time now, but that's beside the point), and I was able to fire up the MicroVax II's. I have two of them, one in an official DEC enclosure, and one in a third party cabinet. They both "work" after a little cajoling, but neither boots from disk. The third party cabinet Vax has a screeching ESDI disk (sounds like a head crash) on an Emulex controller, and the DEC cabinet Vax has an RD53 on an RQDX3, and it sounds as if the rubber bumper has glued the heads to the stops. I have other ESDI disks, and one other Micropolis drive (non DEC)- I want to attempt to format and test some of them on the Vaxen. I plan on attempting to repair the RD53, but I'd like to be able to format and test disks, since I need to scare up a replacement for the other Vax. I have heard tales of a magical diagnostic tape that exists for these machines. Both Vaxen have TK50's, and I have one TK50 cartridge (jammed in one of the TK50's... Gotta free that tonight). I also have, IIRC, a SCSI TK50 (gotta dig that out tonight as well). So, is there any way of creating a diagnostic tape for these MicroVax II's? Is there an archive somewhere out on the 'net of tape dumps? Thanks! -Ian

19 years

7
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Vintage Cisco Router code

by mikelee＠tdh.com

I've got myself a Cisco AGS+ router (1986-1995) and I'm looking for OLD code versions for it. I got it running Cisco GS/IOS 9.x, but want to see some early revisions. I believe this particular model can go up to IOS11.x, but that isn't my goal. I'd like to have examples of "what was." Anyone have suggestions on how I could obtain very obsolete code revisions for Cisco Routers/IOS most likely only historically significant and not of much technical or monetary value today? Also, looking for any more info/leads on vintage infrastructure equipment, and historically significant early models.

19 years

3
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CNET Collectible Computers

by marvin＠west.net

They are not only wrong, but rather vague! But for their list of the top 5 collectible computers, take a look at: http://www.cnettv.com/9710-1_53-28760.html?tag=nl.e415 For those of you using real browsers that can't view the video, they are: 1 - Apple I 2 - Altair 3 - Apple Lisa 4 - Xerox Alto 5 - Commodore 64

19 years

6
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Can someone tell me what this means?

by roger.holmes＠microspot.co.uk

> Date: Sat, 11 Aug 2007 16:23:24 -0400 (EDT) > From: der Mouse <mouse at Rodents.Montreal.QC.CA> >> If OS X is really Unix under the hood, then why do vendors of several >> of my high-end applications that are offered in Windoze and OS X >> versions all say "We have no plans for a Linux version"? It would >> seem to be a pretty easy thing to do. > > I don't *know*, of course, since I have no inside information about > any > such vendors. But some plausible answers come to mind: > > (1) Because "high-end" applications usually depend on a lot more than > just the "Unix" in OS X. They typically depend on Aqua as well > (that's > the fancy - and closed, and proprietary - GUI layer). Porting them > (too often, this really means rewriting them) for Linux is likely > to be > difficult, especially since "Linux" is not a single thing when it > comes > to higher-end graphics - there's far more variability in graphics > hardware under Linux than across the entire OSX-supporting Mac line. > > (2) Because a substantial part of the cost, to the vendor, of a Linux > version is in not the creating of it, but the customer support for it. > > (3) Because they have limited resources and have chosen to invest them > in the Windows and Mac versions, expecting higher ROI there. I am technical director of one of those vendors, and you are spot on. Except that Aqua is merely a set of guidelines, not actual code. The code is called either Carbon or Cocoa, though you could write your own and still conform to the Aqua user interface guidelines. Anyway, do things like QuickTime, OpenGL and Quesa exist on Linux? It would take me time I do not have (and human memory) to keep up with what is and is not in yet another operating system. Apple spends a lot of money keeping developers like me up to date with their developments, I presume nothing similar is done with Linux. What spare time I have is more enjoyably spent of classic cars and classic computers.

19 years

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CNET Collectible Computers

by evan＠snarc.net

That is really weird. "Top 5" by what standards? Will have to write about this in my Computerworld blog...

19 years

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newbie building a scratch-built computer

by classiccmp＠memory-alpha.org.uk

Hi, >> Good point, and the exact reason I picked up a "Softy S3" >>about 10 years back (which is in SERIOUS need of TLC >>unfortunately). > > I rememebr seeing the adverts for that -- and drooling :-). It is a *SERIOUSLY* useful device....it'll even emulate RAM, which is surprisingly useful when debugging code. :-) >....Alas I was an undergraduate at the time, and no way could >I afford one, so I built my own programmer/emulator.... I first came across the S3 in '89, it was standard equipment at the company I was working for at the time. It's one of the few times that I have been genuinely blown away by a piece of technology. A sort of "Eureka" moment. Even then I couldn't afford (well, justify) the cost of getting one to use at home. In the end I picked this one up in '97, from the small ads of the local paper, for ?35! It had been dropped, so the case is pretty badly damaged, but other than needing an new Ni-Cad battery pack it's fully functional. Or at least it was, I seriously need to overhaul it. The irony is, I'm pretty sure this unit is one of the very ones I used between '89 and '91. The guy I got it from bought it at a "clearout" sale at Aston Science Park in '91....which was when the aforementioned company I'd been working for, on said science park, closed down.... :-) >....3 large boards of TTL chips (I couldn't use a processor, >what could I have programmed the firmware with :-)). LOL, good point. I actually built my first EPROM burner from scratch too (though I never built an EPROM emulator). I had little choice, as an Atari user my options for off the shelf programmers were very limited - most connected via RS232, no use to me as I didn't have the 850 serial/printer interface module. And the only other one I remember would only work in an Atari 800 as it plugged into the right hand cartridge port (I, of course, had a 400). So I threw together a very simple design which connected to the machine via it's joystick ports. The joystick ports were connected to a 6520 PIA inside the machine which gave me two 8 bit I/O ports to play with. Used one port to pass the data to be burned, and used the other to provide assorted control signals - like the programming pulse, clocking/resetting a pair of 4040 counters which provided the address to the EPROM (I said it was simple), etc. Worked surprisingly reliably. > I do have the original Softy somwhere. SC/MP based, TV output, >programs 2708s. I can't rememebr if it emulatrs as well. I've never actually seen one of those for real, just pictures. Is it just me, or did they use a very similar case to that of the ZX-80? Certainly, the bottom part of the case looks identical in the pictures I've seen. TTFN - Pete.

19 years

2
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newbie building a scratch-built computer

by dkelvey＠hotmail.com

>From: woodelf <bfranchuk at jetnet.ab.ca> >Gordon JC Pearce wrote: > >>There's also Megasquirt, where you can buy the hardware platform as a >>kit, and download the circuit diagrams and firmware source code. > >Umm time to change the subject line ... Fuel injection has very little >with a scratch built computer. >PS. Looking at a PROM burner the lowest cost one I could find is $750. >Where they that expensive (the programmers) back in the 70's when people >used them? > Hi Professional ones were. There were a number of them that were simple data latches and voltage supplies. These were usually less than $100 but you had to supply the computer to actually run them. Dwight _________________________________________________________________ Learn.Laugh.Share. Reallivemoms is right place! http://www.reallivemoms.com?ocid=TXT_TAGHM&loc=us

19 years

1
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PCI questions

by compoobah＠valleyimplants.com

Probably pretty basic PCI questions, but it seems to be difficult to find detailed information about PCI online (for less than big $$). I have a 98% useless 53C875-based SCSI card (Diamond Fireport 40), useless because the Diamond PCI ID is different from the Symbios PCI ID. I have several machines that support 53C875 chips natively (Alpha, Sun, perhaps HP 9k), so I'm trying to figure out how to turn this thing >from a piece of junk that I trip over into an asset. Looking at the card, there is a small Atmel EEPROM (not the firmware). (a) does anyone know if there's a way to bittwiddle without pulling the EEPROM? (2) since the machines I will be using it in have onboard firmware support, what would happen if I just pulled the chip (or is the setup of onboard peripherals integrated into the system firmware and the card initialization will fail without the EEPROM)?

19 years

2
1
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Can someone tell me what this means?

by technobug＠comcast.net

On Aat, 11 Aug 2007 09:13:06 -0700, Chuck Guzis" <cclist at sydex.com> wrote: > > What does Apple and Steve Jobs have to do with Unix? > > Cheers, > Chuck See: <http://weblog.infoworld.com/enterprisemac/archives/2007/07/ leopard_gets_un.html> <http://www.opengroup.org/openbrand/certificates/1190p.pdf> CRC

19 years

1
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non-subscribers, slackers, and scoundrels in general was Re: UK VCF?

by aek＠bitsavers.org

> Loads of people even on this list are sitting on > stacks of old floppies, and don't even take the time > to ensure the data therein won't be consigned to > oblivion. Lurkers far outnumber active participants on mailing lists. The CHM Software Preservation Group mailing list has over 100 subscribers. I doubt if there have been posts from more than a dozen people there. I think there are four people who have created content for the group web site http://www.softwarepreservation.org/

19 years

2
1
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Commodore 64 power jack?

by dgriffi＠cs.csubak.edu

Can someone recommend a source for the 7-pin PCB-mount DIN jacks used for the power jack on a Commodore 64? -- 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?

19 years

8
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Vintage Cisco Router code

by aek＠bitsavers.org

>> I've got myself a Cisco AGS+ router (1986-1995) and I'm looking for OLD >> code versions for it. I got it running Cisco GS/IOS 9.x, but want to >> see some early revisions. I believe this particular model can go up to >> IOS11.x, but that isn't my goal. I'd like to have examples of "what was." > >The oldest I have are EPROMS with 8.2. They are also IGS, but I think >they can work with the AGS. It has been so long I just do not remember >- the GSs were going out of service when I was getting involved. I >know people that were involved - maybe I can ask. > >I ought to just send all the chips (I have quite a few) to Al, if he >is interested. Al? we're interested. another curator here at CHM supported AGS

19 years

2
1
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AT&T 3B2

by compoobah＠valleyimplants.com

Picked up a 3B2-1000 from Josh about a month ago, and I'm still poking around prior to trying to mess with it (hardware looks fine, PSU good, tape roller is jelly but that's fixed by now, hard drive died, but that's being handled). Does anyone here know much about these beasts? I have the service manual from Manx, but it doesn't say much about the architecture. Here's my big question now: I have a 3B2-1000/80 backplane (CM519B) with a 3B2-1000/70 system board (CM518B) (in a 3B2-1000/60 box, to round things out...) 3B2-1000/60 has a single ?Bus slot and several buffered ?Bus slots. 3B2-1000/80 has Pbus slots and fewer buffered ?Bus slots (Pbus takes "Processor Element" multiprocessing cards). 1000/70 might or might not have a ?Bus slot (in the 1000/60 the ?Bus takes a cache card, the cache is integrated in the /70 and /80 system boards). The service manual explains the ?Bus and the Pbus both with the blanket term of "unbuffered access to the CPU bus on the system board". Does anyone know what the difference is? At this point, I'm trying to find out what the lower slot configuration is.

19 years

1
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UK VCF?

by doug＠stillhq.com

Just a thought.. Here in Australia, we have formal protection that is available to Trade Marks, through applying at the Trade Mark Office, and paying an associated fee. I have no idea whether the American equivalent exists, but I am dead certain that unless you have a formal Trade Mark number, you have *no* protection from somebody using your brand name. Does the same thing exist in the UK? I am also certain that there is no concept of a globally protected Trade Mark system. You have to apply for protection in every country. It was very interesting to see "Burger King" here operate as "Hungry Jacks", because somebody already had the name... Doug

19 years

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IBM PC Portable

by wh.sudbrink＠verizon.net

Got the following email today (not my area of interest). I could possibly pick up and store for a VERY SHORT time. ======================================================================== Would you - or anyone else you can recommend - be interested in an IBM PC Portable I wish to donate? If someone will pay the shipping costs, I'd gladly donate it. It's from 1984. I used it when I was in college and as far as I know it still works. Thanks! Justine Nichols Silver Spring, MD fergiestorm at comcast.net ======================================================================== No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.11.11/944 - Release Date: 8/9/2007 2:44 PM

19 years

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UK VCF?

by RodSmallwood＠mail.ediconsulting.co.uk

What about a VVCF = Virtual Vintage Computer Festival? Via a Website to webcams at list members locations. If around they can show off their collection to one or more visitors. Lectures no problem. Demo's Yup. No need to drag equipment around the country. Precious/heavy kit does not get damaged. Fully International Zero cost. The only downside is the loss of the social aspect. Rod Smallwood (The DecCollector) -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Tim Walls Sent: 06 August 2007 15:04 To: cctalk at classiccmp.org Subject: Re: UK VCF? Pete Turnbull said: > On 05/08/2007 21:10, Tony Duell wrote: >>> Hire a genny. >> >> How stable is the frequency of such a unit? Remember many larger disk >> drives have their spindle speed set by mains freqeucy. > > To say nothing of the fact that the output is often nothing like a > sine wave, and many devices don't take kindly to that. Thanks to Yorkshire Electricity Distribution Ltd. being bloody useless, I am considerably more intimate with my building's generator than I was a few short weeks ago, so this is a subject close to my heart! Anyway, the long and the short is that gennys certainly can produce reliable power - more reliable than YEDL, anyway. Our unit is an Iveco 6l 4-stroke diseasel driving a MarelliMotori genset, generating 150Kva of 440v 3phase. Output voltage and frequency are programmable, and frequency stability calibration is documented in the manual. Modern gennies would be more than capable of doing the job, and should be readily available for short-term lease. You'd be surprised how quiet and clean-running they are as well. Fuel isn't cheap though; IIRC running it at ~75% load it uses something in the order of 200 litres/day of diesel; it should be OK to use red diesel in a genny I think (for non-UKers - red diesel is diesel on which fuel tax hasn't been paid,) but you're still looking at a fair old cost. Oh, and to answer the original question - I'm up noorf in Yorkshire, although I'd actually prefer such an event to be in London. I'd be interested in going if it does happen, anyway. Cheers, Tim. PS. Word of advice - check the fuel controller pump relay. Nothing more annoying than being woken up at 3am because a poxy 5 quid relay has stuck and caused the header tank to run dry. Voice of bitter experience there ;-). (On the bright side, if that does happen I can now show you how to hand-prime a dry diesel engine :^).) -- Tim Walls at home in Leeds EMail & MSN: tim.walls at snowgoons.com

19 years

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UK VCF or equivalent

by sellam＠vintagetech.com

See, this is one part of the reasons why I don't actively follow the list: Patrick Finnegan said: > > Indeed. I view Sellam's attitude as a response to all of the people > > who recently were saying, in effect, "Screw your copyright, I'm using > > your name anyway!" > > It'd be nice if Sellam could at least figure out how to say this in a > non-"I'm going to ruin your life for doing something that's not nice" > sort of way. And this is from a friend even!! :/ First of all, how would I be ruining someone's life by running an event parallel to someone trying to steal my international brand name? I'm not threatening to burn down their house and kill their pets, for fuck's sake. I'm not even threatening to sue! I'm offering a rather democratic way to resolve the issue: go to the fake "VCF" or the real VCF, and see which one you prefer. I'm willing to bet that most people would choose the real VCF, and the fake "VCF" would suffer. The question is, does anyone really want to take the gamble? It would be easier to just come up with your own damn name. As others previously have pointed out, this is a brand identity I have developed over the course of 10 long years. I'm not going to let anyone use it unless I approve. I'd be an idiot to allow otherwise. If someone produced a cola and started selling it as "Pepsi", would you have sympathies with Pepsi or the person egregiously stealing the brand name? Anti-capitalist lefties aside, I have a pretty good idea that the legal system would side with Pepsi (the real one). Would you go to MacWorld run by Apple, or "MacWorld" run by a guy named Abdullah? And would you criticize Apple for suing the hell out of Abdullah for infringing on their trademark? Pat, you know the deal. You produce the VCF Midwest under an ad hoc license. Why should I let someone else just take it and run with it as they wish? I certainly wouldn't give you that type of leeway. Nor anyone else for that matter. Are UK nerds just anti-ownership in general, or only because I'm the one raising a beef over the prospect of someone stealing my brand identity? Unreal. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

19 years

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newbie building a scratch-built computer

by classiccmp＠memory-alpha.org.uk

Hi, >> Please note that I've got a couple of programmers as >>well as an eraser--and a big pile of EPROMs. I use them. >>But I don't find it particularly convenient. > > Fair enough. :-) I've been dealing with them for a long time >(as you have) and it's just second nature to me; I don't really >notice the inconvenience. It's what you're used to. I spent some 6 years using EPROMs for development and never considered it an inconvenience (tine consuming, but necessary). Then I used an EPROM emulator.... TTFN - Pete.

19 years

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newbie building a scratch-built computer

by classiccmp＠memory-alpha.org.uk

Hi, >>....and it won't work in anything newer than an XT. :-( > > Why is that a disdvantage _on this list_? Surely original >IBM PC/XT machines are not hard to find (are they?) and >they're certainly repairable... I've got a couple buried somewhere here (an XT and at least one XT-286). The "disadvantage" to me is that I simply don't want to keep an old DOS machine like that going purely to burn the odd EPROM/PAL. Plus, I want to be able to burn EPROMs directly from this machine, the one I do my development work (such that it is at the moment) on, not mess about transferring the files to another machine....hency the reason I really should overhaul my "S3". But I do take your point. :-) TTFN - Pete.

19 years

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Fun with TK50's

by ian_primus＠yahoo.com

Well, in my adventures with this MicroVax II and it's associated TK50, I have learned a few things about these critters: TK50 Facts: A TK50 drive has phillips head screw-heads on both reels (underneath, through hole in board for supply/cartridge reel, and in the center of the take up reel on the top). This allows you to manually rewind a tape that's jammed in the drive. When you rewind a tape that's been stuck in the drive for who-knows-how-many years, it won't necessarily load the next time. Some portions of the tape were wrapped unevenly and dragging inside the cartridge (you can feel it, pusing in on the reel from beneath the cartridge). It's possible to manually wind the entire tape out of the cartridge in order to fix this, using only a phillips head screwdriver. And provided you cleaned the drive, it'll even rewind when power it back up. Said cartridge won't actually hold data again, however. (Can anyone say shoeshine?) Tape cartridge design hasn't changed much. DLT III tapes look almost identical, and would fit if it wasn't for a plastic tab on the left of the tape. Tape cartridges are so identical, in fact, that you can disassemble your dud TK50, and move the bottom part of the shell over to a DLT III cartridge, allowing you to insert it into a TK50 drive. As clever as this seems, it doesn't work at all. Not that I really expected it to, TK50's are 350 orsted, DLT III's are like 1540 orsted. The media is very, very different. I just wanted to see what would happen. In case you're curious, such a tape will thead up, load, then give an error. The tape won't properly rewind and unload either, you have to do it manually. You't think that the designers would have thought of this, and implemented some system of preventing you >from inserting a DLT III tape into a TK50 drive. Like a plastic tab or something. Oh, wait... A TK50 cartridge makes a rather thick, but serviceable, coaster. Just in case anyone else wanted to know :) -Ian

19 years

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Need a copy of Memorite for a Vector 4

by cclist＠sydex.com

Anyone got one? The executable file is fine, or even a diskette image containing it. I'm not sure which version of Memowrite the Vector 4 used, so I'm sorry I can't be more specific. Thanks, Chuck

19 years

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Commodore PET 2001 Photo, 1-18-77

by billdeg＠degnanco.com

Doing a little research.. What date was the Winter Consumer Electronics Show in 1977? Are there any published photos from this event? I have a photo of the prototype Commodore PET 2001 from the Jan 18-20 1977 Gametronics convention proceedings. http://vintagecomputer.net/commodore/gametronics-77/Gametronics_1977_PET-20… ...Is that Chuck Peddle in the photo? ...Is this the oldest known photo of a PET? More photos: http://vintagecomputer.net/commodore/gametronics-77/ I am trying to determine whether Gametronics came before or after the Winter CES in Jan 1977. The web does not seem to have the answer, maybe someone on this list was actually there... Bill D

19 years

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UK VCF?

by roger.holmes＠microspot.co.uk

First a simple question, how many readers of this list are in the UK? If Bletchley Park might be able to do a VCF in two or three years time, maybe we could do something much simpler in the mean time, without using the VCF name. Just a get together of anyone in the UK with an interest in old computers and hopefully a few who would want to exhibit theirs. Who would be interested and about how much space, if any would they want? I guess we would need to double that up to allow for aisles etc. Then we'll know the size of venues to look for. By the way, I was really thrown by the mention of the planet Venus, it took me a while to work out it was a typo for venues :-) Then there's the question of vehicle parking. How many and are we talking only cars and small vans or big vans and articulated lorries? Roger, who is planning a 1300 sq ft extension to his computer room, and who lives on a farm in Kent. Probably too small and not central enough, but who knows.

19 years

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[personal] cctalk Digest, Vol 48, Issue 20, Message 16

by mike＠brickfieldspark.org

> Message: 16 > Date: Thu, 9 Aug 2007 07:45:42 -0700 > From: "Rick Bensene" <rickb at bensene.com> > Subject: RE: Looking for manual for IME 86s desktop calculator > To: "General Discussion: On-Topic and Off-Topic Posts" I've just had a calculator that looks very similar to the IME 86 shipped over from Europe. It was made by Tesla Bratislava located in Bratislava, Slovakia, formely in Czechoslovakia. Apparently they copied other designs for their products, from the layout it is obviousley 3 register based and has core memory storage. I am in the process of reconditioning the unit to get it working, keyboard was completley seized (fixed that), transcribing the layout back to a circuit, cleaning it up, power supply is missing though. If anybody knows of any info of this or the IMS machine or similar machines please let me know. Can post photos of the unit. Many thanks. Mike Hatch Web - www.brickfieldspark.org E-mail - mike at brickfieldspark.org Urban Wildlife ring - www.brickfieldspark.org/uwringhome.htm >> My dad's had an IME 86s calculator in his office for years, >> He's interested in finding a copy of the manual for it -- > A wonderful machine, with a great design. The Italians managed to > package a lot of machine into a relatively small footprint for the time. > Very nice mechanical design and electronic elegance. > > There's a lot of history relating to the IME calculators, particularly > the IME 84 (IME's first electronic calculator) and future calculator > industry developments. > > I haven't come across a manual for one of these machines yet, and have > been looking for a long time. > > I know well how these machines operate. If you have any questions on > how to operate it, drop me an off-list Email. > > > Rick Bensene > r-i-c-k-b-at-b-e-n-s-e-n-e.c-o-m (delete dashes, and replace "at" with > the obvious character) > The Old Calculator Museum > http://oldcalculatormuseum.com > >

19 years

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Commodore 64 power jack?

by adamg＠pobox.com

Ensor wrote: [regarding mini-DIN connectors] > I hate those connectors with a passion, they're so small that they're almost > impossible to solder up. And half the time you spend so long trying to > solder to the pins that you end up melting the buggers....gah! :-( IIRC, if the connector you're working on is plugged into a mating socket while you're soldering it, it tends to retain its shape better. -- Adam

19 years

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newbie building a scratch-built computer

by ajp166＠bellatlantic.net

> >Subject: Re: newbie building a scratch-built computer > From: Dave McGuire <mcguire at neurotica.com> > Date: Sun, 05 Aug 2007 14:43:16 -0400 > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > >On Aug 5, 2007, at 12:17 PM, Chuck Guzis wrote: >> For that matter, why bother with UV erasers and UV EPROMs at all? > > Sorry to jump in, but I'd like to add my opinion. I have a few >reasons why someone might use UV EPROMs. > > If you've got the right equipment, UV EPROMs are cheap, readily >available, highly standardized, predictable, and generally pretty >bulletproof. Works for me. The larger Eproms like 27128, 27256 and larger I have loads of from old PCs that were junked. A ready supply of fast and large (often CMOS) eproms make it easier to do that. Though I had to mod my Prommer to do parts larger than 27256 the code upgrade was easy. Allison > > -Dave > >-- >Dave McGuire >Port Charlotte, FL >Farewell Ophelia, 9/22/1991 - 7/25/2007 > >

19 years

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Ebay user bobar

by silent700＠gmail.com

Are you on this list?

19 years

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Mountain View - was UK VCF or equivalent

by marvin＠west.net

> Marvin Johnston writes: > Since I have a great deal of stuff to sell, I plan on bringing as much as I > can with me :). It will be *wonderful* when I get the workbenches cleared off > -------------------- > > I thought you were making progress with the TRW and Livermore swap meets. > That's a couple of loads a month! Not enough progress!!! Most of the stuff I brought down last month was being sold for other people. I'm getting ready to list a bunch of (appropriate) stuff on VCM as well. The Zaca fire was close enough (about 10 - 15 miles) that I wasn't comfortable going to Livermore last week. This weekend, I'm putting on an ARDF practice here so I won't be going to DeAnza. > Won't have much to sell. What is the VCF policy anyway? Can you do some > dealing during the show? Or is it strictly show with the dealing outside or > offline some where? If you can sell, what is the cost for a booth or table? > > Billy The costs and policies will be posted on the VCF site once Sellam starts publicizing VCF. AFAIK, it is no problem to make deals on or off the show floor :). I'm also trying to get Dana Trout (Pickles & Trout) to come up. If he will do that, it is possible that Sellam would put him on the list of speakers; he has some fascinating stories to tell!

19 years

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SORD

by cc＠corti-net.de

I have a SORD M243 Mark V system that came with PIPS, BASIC and SGL. This Z80 system from 1982 seems to be interesting as it has a built-in color monitor and graphics capabilities. But whenever I load SGL (Sord Graphics Language) into memory I can't load anything other afterwards (like BASIC), I get "memory exhausted". The system has "only" 192 kB RAM and is expandable to up to over 700 kB. I wouldn't mind building a memory expansion but I don't have the description of the hardware, especially of the pseudo-S100 bus of this machine. Does anyone have a hardware manual or the description of the I/O bus? I'm also looking for other software like Fortran, MDOS distribution disks or even CP/M (not sure if there was a CP/M for the M243). Christian

19 years

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newbie building a scratch-built computer

by ajp166＠bellatlantic.net

> >Subject: Re: newbie building a scratch-built computer > From: "Chuck Guzis" <cclist at sydex.com> > Date: Thu, 09 Aug 2007 09:37:12 -0700 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 5 Aug 2007 at 17:21, Allison wrote: > >> Works for me. The larger Eproms like 27128, 27256 and larger >> I have loads of from old PCs that were junked. A ready supply >> of fast and large (often CMOS) eproms make it easier to do that. >> Though I had to mod my Prommer to do parts larger than 27256 >> the code upgrade was easy. > >....but the OP had neither eraser nor programmer for the things--and >that was my point. Why bother using slow, obsolete parts when there >are better alternatives available? Two reasons, cost and availability. Allison > >Cheers, >Chuck >

19 years

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UK VCF or equivalent

by marvin＠west.net

> > *IF* you put on an event of your own and choose to call it the "Vintage > > Computer Festival", *THEN* I will bury your event. Do what you like, but > > find your own name. > > This is why I wouldn't call it VCF or have anything to do with the US > VCFs in any case. The mere fact that someone has enough ego to go "It's > *MY* name and if you use it I'll *crush* you, muahahahaha" puts me off > any further involvement. I don't know how many people feel as I do, but I would not attend a VCF that Sellam was not a part of. He has put a great deal of time and money into promoting this event, and for someone to feel they can dogtail onto his work without his permission is just something I would not support. And the feeling that the wheel needs to be reinvented when Sellam has made it very clear he would support anyone wanting to put on a VCF, is beyond my understanding. And that said, how many people will be attending this years VCF at the Computer History Museum in Mountain View? I have very much enjoyed being able to put faces with names, and it is a great social event as well as being educational! Since I have a great deal of stuff to sell, I plan on bringing as much as I can with me :). It will be *wonderful* when I get the workbenches cleared off and I have enough time and room to work with this stuff again.

19 years

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