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

by jruschme＠mac.com

>From: Mike Ford <mikeford(a)socal.rr.com> >Subject: Re: AAUI > >> Apple can't be blamed for the lack of drivers for various >>cards though. I have used any number of PC PCI boards in my PCI >>Mac's, including USB, Firewire and video boards. The slots >>themselves are compliant with the PCI standard. It's just a matter >>of lacking 3rd party drivers. Creative Labs is releasing a Mac >>version of it's SB Live, NVidia has done Mac versions of it's >>Geoforce boards, 3Dfx did Mac versions of it's Voodoo4 and Voodoo5 >>boards just before they went under, and Adaptec has done Mac versions >>of many of it's SCSI boards. > >My back still hurts, so I'll keep typing.... > >Sure I can blame Apple for the lack of drivers, if stinking Apple wrote a >"generic" driver or even published a stable API for its non standard PCI >byte swapped version of PCI then plenty of cards would have worked on the >mac. As it was, ONLY a handfull of often third parties ever bothered to >write a mac driver for a PC PCI card, and mac users paid through the nose >for those items. To some degree, though, I wonder if there isn't a supply and demand issue in effect. For instance, I've never gotten why no one has written a 3rd party OpenTransport driver for common PCI Ethernet NICs such as the EtherLink III or the cheap NE2000 clones. Apple has published sample driver code and the board-level code is public enough from NetBSD or Linux, yet no one has ever put the two together. From what I can tell, the same is the case over in the PCMCIA world with few cards having MacOS support. >Firewire was always an Apple first product, my guess is that some PC >products may have Apple ancestry in the driver code or at least high level >design. Sort of true for USB, except in the PC world about half the cards >meet the open standard that is what Apple drivers recognize, and half don't >and hence won't work with Apple drivers (nobody "really" AFAIK makes a >Apple specific USB driver). OHCI (supported by Apple) versus UHCI. Ironically, I find that a lot of the cheapest cards are the compatible ones. >PCI Video cards I follow pretty closely, and MAYBE a total of 10 cards work >with macs, with half of those being somewhat generic PC PCI cards. Not >moving closer to the AGP PC standard was killing Apple video performance, >so maybe the latest macs have better compatibility, I don't know the >details of that however. Video cards are the worst since it is not only a matter of drivers, but also of firmware. As I understand it, a video card has to have OpenFirmware code for it to be usable. >Oh happy day, we get the two year old most overpriced PC sound card, >without all the features, finally for the mac. Okay, but why do I want it anyway? >I have fun with old macs, I currently use a Starmax for daily stuff, but I >am moving to daily PC use because I am sick of browsers on the mac that >don't work. In a word, javascript, love it hate, heck I don't even know >exactly what it is, but it doesn't work on mac browsers and that means many >pages I want to access I can't. I'm curious... what browser versions have you had the problem with? iCab aside, I've had less trouble with Javascript implementations than with sites that arbitrarily lock out non-Windows users, even if the site would otherwise work. <<<john>>>

25 years, 3 months

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Request for suggestions that would be OT if not for the fact that it is VCF related ")

by vcf＠siconic.com

I would like to find some sort of mapping software that will allow me to input a set of longitude and lattitude coordinates and a mileage radius >from that point, ideally backset with the boundaries of the US States where the coordinates lay. What I am hoping to get is a visual of the preponderance of data points. If you took the VCF East survey (http://www.vintage.org/survey.html) you'll remember that one of the questions was to the effect of "you would come only if it is within X miles" where X was a number you input. So I would like to see where most of the data points and their radius areas intersect. If anyone has any suggestions for some free mapping software of this ilk, please e-mail me privately <sellam(a)vintage.org>. Otherwise I guess I'll just have to write me some :) Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org

25 years, 3 months

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DEC 8MB parity 80 pin SIMMs... what are these from?

by ethan_dicks＠yahoo.com

I was at the Dayton Computer show last weekend (at the Hara Arena, same place as the Dayton Hamvention) and picked up a handful of, I thought, 8MB parity SIMMs. They are, but they happen to be 80-pin, not 72-pin. So... what strange DEC gear uses them? Old AXP boxes? Old MIPS boxes? -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/

25 years, 3 months

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Who can tell me more about this really weird Z80 Canadian built computer...

by claudew＠videotron.ca

Hi Well today was kinda slow I guess....finds: 1 fully equipped C128 -1541 II and both P.S.s...$10 1 1084S monitor $5 (cant pass them up at that price even if I have about 10 of these...) This is a "weird" (I refuse to use L@@K RARE! because of its over use on ebay) one: 1 AES 7100 Office System. Obviously a Z80 machine from the early 1980s. >From AES a Montreal, Canada company (local stuff!) 1 know of one other non-active collector (still collecting?) who has one. He put up photos so Ill post the URL for there so you can have a look at it and maybe tell me more about this thing: http://www.total.net/~hrothgar/museum/AES7100/ Its the exact same computer. Mine is in terrific shape but I dont have the manuals like this guy does. I do have 2 original boot disks that I was told will boot (to what?) the machine....have not tried it yet... These are "hard sectored" 5 1/4 disks...eeesh...and I only have the 2 original ones...ooooh The look of this computer is very "Space 1999ish" if you ask me... Perhaps this person has already posted here about this machine but I taught I would try again and maybe perhaps something new will come up... Claude Canuk Computer Collector http://computer_collector.tripod.com

25 years, 3 months

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Adding Fibre to network diet

by pete＠dunnington.u-net.com

On Mar 24, 18:25, Mike Ford wrote: > I was at Micro Center last night (in So Cal) and they had a stack of grey > flip top bins with a 99 cent cable sale. Since I have thousands of cables > at home I pawed through it to the bottom of the four bins on top and peeked > into one of the bins below. Lots of AC power cords, but I did pull out > about a 20' section of some kind of fibre. Since I know a have a AUI FDDI > type mau's I am guessing putting a section of fibre in my ethernet network > is fairly practical. Any suggestions on how to do it? FDDI is a ring system, not point to point like FOIRL and 10baseFL, and it's *not* Ethernet. It uses different protocols. I can't remember if you can have a ring as small as 2 nodes, but I don't see why not. Anyone? What kind of fibre it is (backbone or patch lead; 50/125 or 62/125 multimode or single mode)? Is the fibre terminated with suitable connectors? If not, it won't be cheap to get connectors put on the ends. Is it damaged (rudementary test by shining a bright light down it, though that will only tell you if it's really badly damaged, it won't tell you much else about losses). IIRC, FDDI uses lasers rather than LEDs (FOIRL and 10baseFL use LEDs) so don't look into them! If your MAUs really are FDDI, take a look at the FDDI FAQ at http://www.cicese.mx/~aarmenta/frames/redes/fddi/FDDIFAQ.html and the FDDI tutorial at http://www.iol.unh.edu/training/fddi/htmls/index.html. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 3 months

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5 People for NeXT equipment so far...

by curt＠atari-history.com

Ok... So far since my email myself and 4 others are interested in the equipment, I emailed the seller and asked if I could pay in advance by PayPal to secure the equipment and arrange for next weekend to drive down and pick it all up. I personally want dibs one 1 cube, monitor and color printer, so there is still a ton of stuff left, anyone who wants to join on, please resond back, the more the merrier and everyone will walk away with some great equipment & software for great prices, so reply and lets build up the list, please only respond if your serious and will follow through, I'm putting $1,000 out of my pocket on this to secure all of this stuff for everyone, please be curteous and not back out. Curt

25 years, 3 months

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Apple LC550

by broth＠heathers.stdio.com

I just received a load of Apple MACS. Among them about a half dozed LC550's from a school. They work great except they are password protected except the student accounts. Is there a way to bypass the password protection on these or will they need an operating system reload? What is the latest that these will run. They have 7.5.3 loaded now. Brian.

25 years, 3 months

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Batteries for Sharp PC-45XX Still Sold

by jerryjh＠imt.net

A few weeks ago, I requested information about a battery for my Sharp PC-4502 (a portable PC from the mid to late 1980s), yet received no replies. The original batteries made for the Sharp PC-45XXs were from Yuasa, which no longer makes them. The main problem with this battery is its odd shape; other batteries have similar specifications, but will not fit inside this portable PC. Just as I was about to give up, I simply did a Yahoo search on Sharp batteries and the PC-4502 and found a source! If anyone needs a battery for these machines, go to The Raymond Sarrio Co. at http://www.sarrio.com -- and if you specifically need a battery for a Sharp PC-45XX like mine, go to this site: http://www.sarrio.com/sarrio/laptopsh2sy.html Phone: (800)413-1129 FAX: (508)355-8261 I bought the battery for only $49.00, including free 3-day air mail! (They used to cost around $75.00.) The AC adaptors are also listed alongside their batteries, in case you need one of those, too. These folks can also make a lot of batteries, if for some reason they don't have your exact make. So there *is* still hope for old machines when you least expect it. Jerry... on his IBM PC/AT 5170 Model 339 | My laptop computer's a ***** 9600kbps/30MB HD/512k RAM/8 MHz | Tandy TRS-80 Model 100 Net-Tamer V 1.11.2X - Registered

25 years, 3 months

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10Base5/Thicknet (was Re: SUN networking problems)

by pete＠dunnington.u-net.com

On Mar 24, 20:24, ajp166 wrote: > From: jpero(a)sympatico.ca <jpero(a)sympatico.ca> > > > I haven't been following this thread as close as I should. > > > I was working at Intel during the period when ether net was just > > > being defined. The reason for the 2.5m spacing was to insure that > > > any collision was detected by all of the unit on the wire. > > > The idea was that the pulses would be exactly overlapped. This was > > > > In that case, surely the correct spacing of transceivers would depend > on > > the velocity factor of the cable. And while the stnadard specifies the > > spacing (2.5m +/- 5cm IIRC), it doesn't specify the velocity factor > > (other than it must be greater than 0.77 IIRC). > > I recall that in musical stuff and in wirings often these waves > travelling in any tube or wirings tend to be standing waves that why > that marking is where the amptitudes is greatest. That can't be the case with 10Mb thick ether because the distance between markings is about 1/9th of the wavelength. I did find one thing that relates back to something Bill mentioned in an earlier post about specific lengths. >From http://www.ots.utexas.edu/ethernet/10quickref/ch3qr_4.html The specifications note that the thick coaxial segment should ideally be built using a single piece of cable from the same cable spool or from cable spools all manufactured at the same time (known as a cable lot). If cable from different lots is used to build up a thick coax segment, then the specifications note that the sections of cable used should be 23.4 meters, 70.2 meters, or 117 meters in length (all lengths may be +/- 0.5 meters). The reason for using these lengths of cable is to minimize the chance of having excessive signal reflections build up due to the slight variations in electrical characteristics that can occur between different cable manufacturers or cable lots. The basic distance quoted is the same as the distance I calculated yesterday for one bit time: 23.4m. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 3 months

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Slapping a BSD file system on a disk ...

by spectre＠stockholm.ptloma.edu

Any way I can put a BSD filesystem on a floppy from the Sun boot monitor? *hoping* -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- You've got to have a gimmick if your band sucks. -- Gary Giddens -----------

25 years, 3 months

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And someone has one... Re: Virus Alert !!!

by ajp166＠bellatlantic.net

From: Sellam Ismail <foo(a)siconic.com> >On Wed, 7 Mar 2001, John Foust wrote: > >> Why fault Microsoft for making products that are popular and common? >> You might as well blame Ford for drunk drivers. I agree that Outlook > >If MS would just give us the source code, we could fix it for them. > >Sellam Ismail Vintage Computer Festival Dont need no speghetti code to fix it. Just remove the dumb user. Seriously, there are a bunch of things that users should to to elimintate most of the insanity. -Disable VBS scripting, that stops a raft of buggies right there. - disable open after preview for 5sec . - disable auto display of pictures - enable empty deleted folder on close (delete really does then). Thats just a few of the simpler things that really do help. Another is dont run MacAfee antiVirus as it has failed on test systems where Norton or Fsecure did catch it. Allison

25 years, 3 months

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10Base5/Thicknet (was Re: SUN networking problems)

by ajp166＠bellatlantic.net

From: Bill Gunshannon <bill(a)cs.scranton.edu> > >Actually, as coax for RF purposes, it's junk. It is the lossiest of It's not all that bad but my use would be for a colinear array and lossy cable does work ok there even at uhf. >it weren't so lossy, it would be connected to one of my antennae right >now. Still beats RG58A/u though 50ohm .500 hardline is a prefered wire. Allison

25 years, 3 months

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10Base5/Thicknet (was Re: SUN networking problems)

by ajp166＠bellatlantic.net

From: jpero(a)sympatico.ca <jpero(a)sympatico.ca> > > I haven't been following this thread as close as I should. > > I was working at Intel during the period when ether net was just > > being defined. The reason for the 2.5m spacing was to insure that > > any collision was detected by all of the unit on the wire. > > The idea was that the pulses would be exactly overlapped. This was > > In that case, surely the correct spacing of transceivers would depend on > the velocity factor of the cable. And while the stnadard specifies the > spacing (2.5m +/- 5cm IIRC), it doesn't specify the velocity factor > (other than it must be greater than 0.77 IIRC). I recall that in musical stuff and in wirings often these waves travelling in any tube or wirings tend to be standing waves that why that marking is where the amptitudes is greatest. Standing waves in this case would be a reflection of poor termination and cause errors. The measure was to inustre that using the resolution of the system you could resolve to half the distance of a tap (1.25 meters or less than 5ns). The velocity factor of the specified cable doesnt vary much or at least not much if it's in spec. FYI yellow pipe is very good cable. I could use 100ft of it right now. Allison

25 years, 3 months

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10Base5/Thicknet (was Re: SUN networking problems)

by pete＠dunnington.u-net.com

On Mar 23, 17:42, Bill Gunshannon wrote: > > Two points. > > First, "a piece" of yellow cable won't work. The lengths were part of the > spec and very important. Having to do with reflections and such (anybody > here still have a TDR??) I've not seen anything about lengths, except of course for the maximum length and multiple-of-2.5m tap separation. I'm told the standard specifically allows for lengths to be joined at intervals which are *not* multiples of 2.5m, and the overall length does not have to be an exact multiple either. > Second, The cable is marked with black stripes. The taps must go on these > stripes. While I have known people who put the transcievers with the N > type connectors between yellow segments and on the ends of yellow segments, > I have never known seen it recommended that you could/should cut the cable > to insert one of these. I fear that after one or two of them, you would > move the spacing between tap locations enough to adversely effect your > network. I've never been aware of a problem with that. Our old Departmental network (installed by my predecessors) consisted of several segments, many of which had lots of N-series transceivers in them. I suppose, though, that when using N-series transceivers, it might make some sense to chop out a small piece of coax rather than just cutting it. I don't have a copy of the standard, and I don't know if it specifies vampire taps rather than the "taps" with N-connectors (which I dare say are more properly called "tees") but I do know that it specifically allows a segment to be made up of sections of cable joined with N-connectors, and that simple joins do not have to be at multiples of 2.5m. Admittedly, good practice was to use the same cable (ideally from the same drum) for each piece, to prevent small impedance mismatches. To do the maths, I find that the velocity factor for RG8/11U is 0.78, the standard value for c (velocity of light in vacuo) is 2.998 x 10^8 ms^-2, and the nominal frequency used for Ethernet is 10MHz, or 10^7 Hz. So one cycle of the waveform occupies 0.78 x 2.998 x 10 m, which is 23.38 metres[1]. That sounds about right; that would mean about 21 cycles over a 500m length. But there's no obvious relationship between 23.something metres and the 2.5 metre separation distance, it's about 1/9th. From that, I can't believe that a small deviation in separation distances is going to make a significant difference. Unless someone can correct my assumptions, of course! [1] Nitpickers might point out that my figure for the velocity factor is less accurate than the 4 significant figures I used for c. So if I take extremes (still within the Ethernet spec) at 0.77 and 0.80, the results would be 23m and 24m respectively. > This is, of course, assuming a production network and not two machines. > But then. if all you had were two or three machines, a couple hundred > feet of yellow cable seems pretty silly. Unless they're a long way apart, or you're doing it for demonstration/nostalgic/"because it's there" purposes :-) -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 3 months

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Some classic pictures

by optimus＠canit.se

In case anyone's interested, we've added some pictures of our new headquarters at http://www.sua.f2s.com/fotografier/. Some pictures of fancy classic equipment, as well as more contemporary junk. The pictures were grabbed with a video camera, though, so the quality is not all that high. -- En ligne avec Thor 2.6a. G? med i SUGA, Swedish Usergroup of Amiga! WWW: http://swedish.usergroup.amiga.tm/ BBS: 08-6582572, telnet sua.ath.cx, port 42512.

25 years, 3 months

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10Base5/Thicknet (was Re: SUN networking problems)

by pete＠dunnington.u-net.com

On Mar 24, 15:07, Dwight Elvey wrote: > I was working at Intel during the period when ether net was just > being defined. The reason for the 2.5m spacing was to insure that > any collision was detected by all of the unit on the wire. > The idea was that the pulses would be exactly overlapped. As Tony has already pointed out, that can't be completely true, because it would depend on the velocity factor of the cable, and the standard does indeed specify only a minimum of 0.77 for that. Typical values for thick ether are 0.78-0.8, which gives quite a variation. In addition, it would require that pulses from two stations be in sync, which is unlikely since there's no master clock. > This was > also the reason for the maximum length without repeaters. The > packet size was such that any collision was sure to be detected, > regardless of where one was along the cable. Actually, the minimum packet size is what determines the maximum total length *including* repeaters. The maximum length *without* a repeater is determined by the signal losses. > It doesn't make any difference where the end terminations are > placed but both ends need to be terminated. That's my understanding, too. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 3 months

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Free DEC docs and equipment, Washington DC area

by CLASSICCMP＠trailing-edge.com

OK folks, time to clear out more of the basement. First of all, all of the below is *FREE*. But there is one gotcha: if you want any of the documentation, you must haul away some hardware too. No ifs, ands, ors, or buts about this. No shipping, no holding, first-come, first-served. Pick-up only, I'm literally a feet away from the Washington DC Beltway (495). Now, the docs, all in original shrinkwrap: KA660 CPU Module Technical Manual (EK-KA660-TM.001) 660QH Pedestal System Illustrated Parts Breakdown KA660 CPU System Maintenance (EK-398AA-MM.001) MS650-AF/BF/BH/BJ MOS Memory Option VMS Installation and Operations: VAXstation I, II, II/GPX and Microvax I, II DECVoice Software Reference Manual Additionally, not in the original shrinkwrap: A big box full of DEC Rainbow and Pro 350/380 binder boxes, some with software. And the hardware: Two BA11 10.5" high Unibus chassis, with power supplies and backplanes. (Weight 60-70 lbs). At least one spare power supply for the above chassis. A couple of Unibus backplanes in various conditions. A 4-foot high tape hanging rack for 9-tracks. Nice wood trim. A whole bunch of other stuff that I could probably get rid of right now but don't have the heart to commit to. If you're here with a truck and ask me about it, though, it's probably yours. If you're interested, please send an E-mail to "shoppa(a)trailing-edge.com". Pick up will have to be on the weekend or possibly a near-future weeknight. Tim. (shoppa(a)trailing-edge.com)

25 years, 3 months

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VAXstation 3200

by ip500＠home.com

I've been following the thread about Chad's VAX and/or DEC machine. Just picked up a pair of these VAX station 3200 and don't find much web based data about them. I assume as they clearly say VAX , that they run VMS. Anything I should know before taking a look inside? I don't want any of that magic smoke to escape because of a stupid error on my part. Thanks, Craig

25 years, 3 months

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10Base5/Thicknet (was Re: SUN networking problems)

by pete＠dunnington.u-net.com

On Mar 24, 9:44, Bill Gunshannon wrote: > On Sat, 24 Mar 2001, Pete Turnbull wrote: > > I've not seen anything about lengths, except of course for the maximum > > length and multiple-of-2.5m tap separation. I'm told the standard > > specifically allows for lengths to be joined at intervals which are *not* > > multiples of 2.5m, and the overall length does not have to be an exact > > multiple either. > > Well, I could be wrong, but back in the days when I actually did this > stuff for real I know I never saw yellow cable sold in bulk. Only in > fixed lengths. As far as I've seen, it's always been available in 100m and 500m drums -- which of course happen to be multiples of 2.5m -- but I'm sure that's just because they're nice round numbers. Most cable is sold in those quantities. One of my catalogues does list 10,20,30, and 40m lengths fitted with N-connectors, but again I'm sure that's just because they're round numbers. > One would hardly expect they did this if there was no > reason for it. I doubt I still have any catalogs from those days to > look at. In any case, I doubt anyone is going to do a real network today > with an really long sections of yellow cable. > > I've never been aware of a problem with that. Our old Departmental network > > (installed by my predecessors) consisted of several segments, many of which > > had lots of N-series transceivers in them. I suppose, though, that when > > using N-series transceivers, it might make some sense to chop out a small > > piece of coax rather than just cutting it. > > Boy, that sounds scary. But then, what you see in practice does not > always reflect good practice. Agreed, but that was *common* practice. > In the early days of ethernet, all kinds > of strange (and even dangerous) things were done. Like grounding both > ends of the yellow cable (no, you are not supposed to do that!!) Yup, I know! I saw what hapenned when someone tried that :-) It did *not* do anything any good at all! I also know what can happen when the unwary (in this case, me) touch the screen while holding on to a locally-earthed cabinet :-) > Or thin-net installations with a length of RG58 between the T-connector > and the transciever. I know someone who tried that, too. It worked for a couple of short tees, but after that everything fell apart. I know of a few installations which use Safernet and EAD cable to prevent people trying it. > > Unless they're a long way apart, or you're doing it for > > demonstration/nostalgic/"because it's there" purposes :-) > > > I can see doing for demonstration purposes, but I would bet people would > be more impressed if it was fiber. That's what I use small demos. I have a pair of FOIRL transceivers and some fibre for exactly that, but people still are interested to see real Ethernet. > And I may be able to find stuff (like vampire taps) at work as > although it is all inactive, I doubt that the yellow cable has been > removed from the ceiling and wiring closets. Who knows, maybe they > would even be glad to have the yellow cable pulled out too. It's a > pretty long run (the length and height of the building) in two sections. I'd like to get a vampire tap for my collection -- all of ours were N-series, at least all the ones I've found. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 3 months

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New find - Poor Man's Network - - for CP/M!

by r.stek＠snet.net

I just came across a piece of software I don't remember from 1987. It is called "Poor Man's Network: A Networking Package for CP/M Computers." It was put out by Anderson Techno-Products of Ottawa, Ontario. Judging from the manual, it appears to have been a one- or two-man operation (nothin' wrong with that - been there, done that). It uses standard serial or parallel ports and is based upon a very modified Christensen protocol to communicate with itself on the other computer (it only support two computers - after all, you couldn't afford more than two computers if you were really poor <g>). It's capabilities seem to have been to allow allow read and/or write access to files on the other computer (handy for those NorthStar hard-sector disk file transfers to and from 8" drives, for example), sharing drives on the other computer on a R/O basis, redirecting output to use the other computer's printer or plotter, sending one-line messages to the other computer, and the ability to send screen messages and data mesaages to the other computer and to receive data messages from the remote computer (simultaneous read and/or update a database using added BDOS calls). Sharing was on a drive basis only. It took up about 7-8k memory and worked with CP/M 2.2, ZRDOS or equivalent. Has anyone had any experience with this gem? Or even remember it? Were there others like it? By '87 I had become enmeshed in the IBM-Microsoft world, and don't remember this one at all! Bob Stek Saver of Lost Sols

25 years, 3 months

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Looking for Compute! Atari ST disks

by owad＠applefritter.com

I'm looking for the following Compute! disks for the Atari: Compute!'s Atari ST Disk December 1987 Volume 2 No. 6 Issue 8 Compute!'s Atari ST Disk February 1988 Volume 3 No. 1 Issue 9 All I'm really interested in is the contents, so I'd be quite happy with a copy. An .ST or .MSA file via email would be perfect. If anybody could help me out I'd appreciate it. Thanks, Tom Applefritter www.applefritter.com

25 years, 3 months

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20,046 pages of scanned old docs online?

by mcguire＠neurotica.com

On March 23, Gooijen H wrote: > If Sellam (or anybody else) has some 2,4 Gbyte space available > I am willing to make a copy of the 5 CD's, and share the data > with everybody on this fine list. I have LARGE amounts of disk space available, and decent bandwidth (2.3mbps, soon to be 5mbps hopefully)...I'd love to host this stuff. -Dave McGuire

25 years, 3 months

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TU-58 rollers and emulation (was Re: VAX 11/725)

by ajp166＠bellatlantic.net

From: Clint Wolff (VAX collector) <vaxman(a)qwest.net> >I've written one for DOS that needs some tweaking still... I'll cut >loose the source code if someone wants to fix it up. Basically, it >sometimes gets out of sync and you have to power down the 750 and >restart the PC to get it back working... You need to acknowledge that INIT from the host (750 or pdp11) can force the tu-58 back to initial status. on the real tu58 thats a break char and the resulting Framing Error from the Uart causes a TRAP interrupt (higest priority nonmaskable interrupt) on the 8085. A PC would have to sense a Framing Error (Character with no stop bit for at lest two character times) and force the code back to the starting point where RSP is restarted. I have prints and manuals plus some of the designers notes from by days as a Digit. Back when they were easy to find and a cheap way to put 512k of block oriented storage on a serial port of PDP-11 systems. I also have a few that used a parallel IO (used only for PDT11/130) that are otherwise identical. >THANKS Allison! I bought two from Keyways, Inc. for $40 + shipping... >For that price, I could have bought 20' of Tygon tubing... Live and >learn... For 40$ that should have been 80ft of tygon and at roughly .300 inches of it per roller that would be enough for a couple of Sagans of them. <one Sagan = billions and billions) I had it handy and it works *ok*. It's weakness is that it dents if the cart is left in place for long periods. It recovers if shape if the cart is removed but a more resilient material might be better. I used tygon as I had it at hand. A rubber hose material with the right dimensions would be a good choice. Also the dimater for the TU58 roller is non critical save for it works best if round. ;) The actual tape speed is controlled by the cpu and a PLL circuit and has a +-10% or more tolerence of roller diameter before there may be a tape speed problem at the ends of the tape. Allison

25 years, 3 months

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Atari Portfolio

by jhellige＠earthlink.net

As of today, I'm the happy owner of an Atari Portfolio. Pretty neat little machine, with even a longer battery life than my Tandy 102. Due to it's small size, not as nice a keyboard though. Does anyone know where I can get additional 64k or 128k memory cards for it? It came with the parallel interface. Also, I've been told that the Portfolio is what was used by John Conner in 'Terminator 2' when he broke into the ATM and the Cyberdine vault...is this true? Jeff

25 years, 3 months

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Western Digital PASCAL microengine / p-system.

by mwigan＠vaxc.cc.monash.edu.au

This is the first lost where my two favurite computers are discussed... I have several pascal Microengines (in dual processor z80/p100 form on s100) still running today, plus a range of Sage 4;'s running 8 different operating systems (several all at once) marc Wigan Australia

25 years, 3 months

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AAUI

by jeff.kaneko＠juno.com

On Mon, 12 Mar 2001 15:45:02 -0800 Mike Ford <mikeford(a)socal.rr.com> writes: > AUI to 10bt adapters are still handy as many early devices had AUI > and coax, and AUI to coax are handy as many newer devices are AUI and > 10bt. Not to mention the fact that *really* early devices (multibus ethernet adapters come to mind, along with DEQNA's, and other stuff) that are AUI *only*. I've waited a *long* time for prices on AUI<->10bT tranceivers to fall to reasonable levels so I could easily hook up such beasts. Jeff ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 3 months

2
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BSD/OS 1.1

by jhellige＠earthlink.net

We seem to have a bunch of Unix-types on here so I thought I'd pose a question. Today, I came across the following 5 HD disks from Berkeley Software Design Inc: - BSD/OS 1.1 Boot Disk 1, /boot and /bsd - BSD/OS 1.1 Boot Disk 2, Installation Utilities - BSD/OS 1.1 Kerberos, Kerberos Utilities - BSD/OS 1.1 Encryption, Encryption Utilities & Src - BSD/OS 1.1 EZ-Config, Configuration Tools What's missing from this set that would keep it from installing? Is there anything particularly interesting about it other than it appears to be the ancestor of the current Net/FreeBSD? Jeff

25 years, 3 months

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NeXT pile for rescue in Philadelphia, PA

by LFessen106＠aol.com

In a message dated Fri, 23 Mar 2001 6:28:16 PM Eastern Standard Time, "Jeffrey S. Sharp" <jss(a)ou.edu> writes: << > Even assuming some bad units, this works out on the order of > $35/NeXTStation, near complete. For that price (maybe a little more if need be), I would be glad to take one. -- Jeffrey S. Sharp jss(a)ou.edu >> I would be interested at that price as well - for a complete unit.. It's gotta have the cables though cause I can't seem to find them anywhere and they're useless without them. Also, I would be willing to help with pick-up if need be as I am only 1 hr away from philly. Just let me know. -Linc Fessenden

25 years, 3 months

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VaxServer 3100 and VT340 terminal

by ajp166＠bellatlantic.net

From: Compusync <hsappleton(a)sprintmail.com> >I humbly appreciate the response. For a novice(in a very conservative sense >of the word) user like myself, it will ultimately draw a couple other >have no experience in VAX/DEC or UNIX for that matter. I want to take care Is VMS install or Ultrix (possible NETBSD?)?? >1)can you help me identify the console port and/or second >serial port Look at back pannel, the symbols in the plastic should help. If it's a vaxserver there will be three 6pin connectors like a telephone plug only with an offset loging clip. While the connector is odd those ports are RS423 (very similar to RS232). The VT340 has matching connectors (2) and also the standard 25pin serial connector. The 25pin connector on the vaxserver is also RS232 but not console. It is a full handshaking serial port suitable for a modem. >2)Don't I need some kind of cable and what type For the serial its just called MMJ or deconnect. There is only one type and varies only in length (no null modem or other odd wired versions). >3)what is MMJ ports and port 0 also has an RS232 output VT340 terminal on the back. >My VaxServer is has the following ports: SCSI, Standard SCSI-II useable with many types of drives, tapes and some CDroms. >a 25-pin db Modem use usually works up to 19.2k maybe 38kb. > 3 rj-11 type Those are acutally MMJ (modified modular jack/plug). Three identical serial ports save for one #3 if memory serves is the default console. >with left and right arrow; 2 Ethernet connector-one BNC and the other AUI; Exactly and inbetween a push swich to select one or the other. >50-pin port; aport that looks like a printer port with a left and right >arrow. Used with the right cable/connector it's 8 more serial ports. >My VT340 has the following ports: 2 RJ-11 type with left and right arrows; a >printer port; a keyboard port; a 25-pin dB port; and a 8-pin mini din port Ignore the 8pin mini-DIN as thats for optional mouse. The two RJ11 as you call them are the MMJ serial ports and port 0 is shared with the DB25. Which port is in use is selected by F4 (session select) and also the on screen configuration. NOTE: VT340 is a very nice DUAL session terminal. It allows two connection running at the same time independently or two sessions over one wire (under VMS or terminal server). I only have three VAXserver3100s (M10E versions) in the VAX herd (9 in all). I also have an assortment of terminals including a few VT320s, VT340, VT1200, VT125 and H19 (I built as a kit in 1978). Allison

25 years, 3 months

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NeXT pile for rescue in Philadelphia, PA

by mark＠mtapley2.space.swri.edu

All, apologies if this is redundant, I'm behind on reading and in digest mode anyway. This appeared today on comp.sys.next.marketplace. vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv Path: sn-us!sn-xit-01!supernews.com!feeder.qis.net!feed2.news.rcn.net!rcn!news.voicenet.com!nntp.upenn.edu!mail1.sas.upenn.edu!nospam From: nospam(a)mail1.sas.upenn.edu (David Anstine) Newsgroups: comp.sys.next.marketplace Subject: NeXT Clearing House Date: 23 Mar 2001 17:02:05 GMT Organization: University of Pennsylvania Lines: 38 Message-ID: <99fvid$ke2$1(a)netnews.upenn.edu> I have the following NeXT equipment in my basement that needs to go. I'm looking to move the whole lot and will take $1,000, or best offer. If you are not serious, please do not jerk me around. I've already had three parties back out at the last second. One more time and this stuff goes in the dumpster. 40 NeXTstations (approximately 1/2 are turbos) 34 NeXT Monochrome monitors 2 Cubes (one is missing the back cover) 3 NeXT Laser printers (Only one is confirmed to be working) 38 NeXT keyboards 30 NeXT Mice 1 NeXT Color printer 1 NeXT cdrom drive 1 Digital Eye Note that I can't vouch for the condition or existence of hard drives in all of these machines. Also I, recently tested the monitors for screen brightness; approximately 20 were ok, 8 were slightly dim, 2 were definitely dim, and 4 had some weird distortion problems. I also have: Lots of software (FrameMaker, WordPerfect, Lotus, DataPhile, you name it, I probably have it) Lots of other junk (NextWorld Magazines, NeXT manuals, NeXT coffee cup, NeXT stickers, etc..) Note: I will not ship any items. This is simply too much stuff to deal with (boxing, UPS, etc..). If you want it, you have to pick it up. I am located in Philadelphia, PA. -dave email me at my last name at sas dot upenn dot edu ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Anybody near Philadelphia, please respond. I'll be off-line during the weekend, but if you are interested email me and maybe we can put together a group buy. Even assuming some bad units, this works out on the order of $35/NeXTStation, near complete. Questions for the seller, if you contact him directly to save time (and please feel free to do so) would include whether he's got the mono monitor cables available. - Mark

25 years, 3 months

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20,046 pages of scanned old docs online?

by cmcmanis＠mcmanis.com

DEC has stated publically that any publication they no longer publish may be republished by a third party as long as it is not for profit. --Chuck At 02:15 PM 3/23/01 +0100, you wrote: >3. How about legal issues ?????

25 years, 3 months

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SUN Networking problems

by Arno_1983＠gmx.de

Peter Turnbull wrote: >It sounds like you've shorted the cable. Do those transceivers have a set >of LEDs on them? I suspect not, but that might tell you if anything is >being transmitted/received. The InterGraph transceivers have three LEDs labeled PWR, SQE and COL while the NV1000 only has one located next to the AUI connector. It's been quite some time since the error happened and I've forgotten how they behaved, but I'll re-try and watch 'em this weekend. >You could try removing one terminator and testing the DC resistance >between core and shield of the coax; it should be 50 ohms with nothing >powered up. If you have shorted it... OK, I tested with my DMM and there was a reading of 51,4 Ohms on it - I guess that's inside the tolerance and not to be called a short... Tony Duell wrote: >>we've put another transceiver on the cable strictly according to the >>installation guide that came with it (drilling hole into cable with >>recommended tool etc...). >>Since we've done that, it's no longer possible to print from one of the >>SUNs to the CalComp although the PC is not yet connected to the >>transceiver. >THis may be something that has been mangled by the translation into >English, but I want to get it right : Can you print from one of the Suns >and not from the other, Or Can neither Sun print? Yes, it was a bit of a strange translation (my fault...) but the meaning is the following: One SUN only can't print while the other one cannot be tested as it doesn't boot up due to internal data loss in the battery buffered RAM. >...I would suspect either damage to one of the transceivers (was the network powered up when you drilled the cable?... No, we had powered down everything and even disconnected the drop cables >from all units on the network before drilling the tap hole. >...or maybe a reflection from the 'stub' caused by the new transceiver (did you follow all the rules about unequal spacing of the transceivers, etc? There are several black marks on the yellow cable and when we got it, we were told if we ever were going to add another transceiver, we should put it next to one of those marks. And so we did. But as there seem to be rather complicated rules for working out this, I'd like to know them in order to check if the markings on the cable show the correct places. Thank you all for your suggestions on finding the problem. -- GMX - Die Kommunikationsplattform im Internet. http://www.gmx.de

25 years, 3 months

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20,046 pages of scanned old docs online?

by GOOI＠oce.nl

Hi all! > ..... I am not in the habit of actively reply to this group, although I read ClassicCmp *every* day. I work at Oc?, and even did the software of the scanner drive and part of the Image Logic of the Oc? 3165. I also know of ScanLogic and (of course) have access to all the goodies. The scanner actually processes about 54 pages A4 / minute. I copied almost all the Field Maintenance Print Set doc that I have. To name a few: RL11, 11/40, RL02, RX02, TE16, TS03, TMB11. And many more. The problem is that I can not make it all available for the following reasons: 1. it is scanned at 600 dpi (!) --> *BIG* files (see my website) When you print it on A3 (ledger), the copy is sometimes even better than the original, because Image Logic enhances thin lines. Coffee spots are less visible. 2. Because it is so many, it fills more than 4 CD-ROMs. 3. How about legal issues ????? If Sellam (or anybody else) has some 2,4 Gbyte space available I am willing to make a copy of the 5 CD's, and share the data with everybody on this fine list. When the problems (making it available) are all solved, I am willing to continue scanning. I can scan all manuals (A4, letter) and quick ref cards just as easy. I can post a complete list (with file size!) if you like. When you send me doc, I will scan that too, but I am not going to pay for the return postage, if you want the doc back.... Kind regards, Henk Gooijen, PDP-11 collector Sneak-peek of retro-computing: http://home.12move.nl/~sh416008 (by far not up-to-date, heavily under construction)

25 years, 3 months

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pdp 11s to be auctioned at Goddard ( plus trivia )

by mmcfadden＠cmh.edu

What we need is a central repository for classic computers:) About 15 miles down the road from where I live, near Kansas City, the National Archives has a big underground spot for all sorts of records. Part of the Smithsonian Archives is there. Space is cheap. A piece of trivia, I once heard that all of the population of Kansas City could be housed underground in case of Nuclear War. The entire area is underlain by limestone quarries. There are spots where they run trains full of frozen vegetables in and unload them. They can have a power failure and the temperature only goes up about 3 degrees in a month. Although they had a fire and it took several months to choke it off and they ended up pumping in liquid CO2 to smother the fire. The local newspaper, Kansas City Star, sent all of their reporter's notebooks and unpublished photos to a one of the "caves". Lots of valuable information especially about President Truman who's from the area. The newspapers and paper have to be acid neutralized or you end up with powder. Actually logistics and conservation is always a problem. You actually need an ongoing process to reexamine and prevent rust, vermin, and oxidation. You can't just store it you must actively maintain it. I'm sure I'm "Preaching to the choir". Mike mmcfadden(a)cmh.edu

25 years, 3 months

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DEC 8MB parity 80 pin SIMMs... what are these from?

by PeksaDO＠Cardiff.ac.uk

As previously mentioned these are probably MS01-CA for DECstation 3100 or DECstation 5000/1xx or Personal DECstation 5000/xx. Note that MS01-AA (a pair of 2Mb SIMMs) and MS01-CA (a pair of 8Mb SIMMs) cannot be mixed - well they can but then the 8Mb SIMMs pretend to be 2Mb SIMMs, i.e. 2Mb+2Mb + 8Mb+8Mb => 8Mb. Doug. PS - Anybody got any to sell - I'm looking for 3 MS01-CA, i.e. 6 x 8Mb SIMMs for a total of 48Mb.

25 years, 3 months

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System 36

by foxvideo＠wincom.net

I have been given a Model 5363 and would like to try to get it operational. Does anyone have any suggestions on where I might find documentation? Even an operators manual would help. Thanks Charlie Fox Chas E. Fox Video Productions 793 Argyle Rd. Windsor ON N8Y 3J8 foxvideo(a)wincom.net Check out: Camcorder Kindergarten at http://chasfoxvideo.com

25 years, 3 months

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Club (was Re: pdp 11s to be auctioned at Goddard)

by jhellige＠earthlink.net

>Keeping track of the finances would be tricky. Someone will have to manage >the money, and they will be met with varying amounts of distrust by those >who would donate. Maybe a good thing would be to either form a nonprofit or >get one to assimilate us. >And it would need a cool name. :-) >Thoughts? Not only keeping track of the finances, but what about actual ownership? I like the club idea but I can just see someone down the road trying to sue the club for ownership of a particular piece in the case of a dispute. No doubt there are a lot of legal aspects that would have to be worked out to protect everyone involved. Then there's the logistics if the club does have a single repository for storage of the equipment. I'd certainly be interested in being part of it though. All of us together could certainly make a bigger impact than singularly. Jeff

25 years, 3 months

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20,046 pages of scanned old docs online?

by pete＠dunnington.u-net.com

On Mar 22, 18:11, Edwin P. Groot wrote: > 60 pages per minute scanner, double-sided? Holy Crap that's fast! Do > not wear a loose necktie when working on that machine! I don't know many > high-end photocopiers that would go that fast. Our two Oce 3165's do 62 ppm double sided. See http://dev.oce.co.uk/Copying/Products/Digital/3165/Default.htm -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 3 months

2
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Xenix/286-Any hints?

by mapr0003＠stud.uni-sb.de

Hi, I am interested in old computers especially in i286 (PC/AT)class computers. I am looking for a multitasking OS which uses the capabilities of this CPU like memory protection, 16MB address space, etc. I only found Xenix/286 which take advantage of this 286 features or are there other ones as well? Is it still possible to find copies for this version of Xenix? Thanks in advance Mario Premke

25 years, 3 months

6
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ID oddball HP board

by kyrrin＠bluefeathertech.com

At 23:36 22-03-2001 -0500, Bear wrote: >(PSI = programmable serial interface - protocol depends on software) >Supported in all PA-RISC machins with EISA slots. Supported OS revs appear >to be 10.10-11.0/32 Ahhhh. Ok, that makes sense. This begs the question, does anyone need the thing? I sure can't use it. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner and head honcho, Blue Feather Technologies http://www.bluefeathertech.com // E-mail: kyrrin(a)bluefeathertech.com Amateur Radio: WD6EOS since Dec. '77 (Extra class as of June-2K) "I'll get a life when someone demonstrates to me that it would be superior to what I have now..." (Gym Z. Quirk, aka Taki Kogoma).

25 years, 3 months

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ID oddball HP board

by kyrrin＠bluefeathertech.com

Date codes on the chips are in the 1991 range, so it fits the ten-year rule... Got a full-length EISA card, made by HP. Part # on board is 25565-60002. No match whatsoever at HP or on Google. Surface-mount chips on both sides. Motorola MC68302FE16C CPU, single 72-pin SIMM socket with a 1MB SIMM in there at the moment. Front bracket has a single 62-pin female D-shell connector. Bracket also sports a single amber LED at the top labeled 'Fault,' and the designation 'PSI' directly below the D-sub. (1): What the fsck have I got? (2): Assuming I don't need it, would anyone else want the thing or should I feed it to the recycle bin? Thanks. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner and head honcho, Blue Feather Technologies http://www.bluefeathertech.com // E-mail: kyrrin(a)bluefeathertech.com Amateur Radio: WD6EOS since Dec. '77 (Extra class as of June-2K) "I'll get a life when someone demonstrates to me that it would be superior to what I have now..." (Gym Z. Quirk, aka Taki Kogoma).

25 years, 3 months

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pdp 11s to be auctioned at Goddard

by mcguire＠neurotica.com

On March 21, Bill Pechter wrote: > Too bad classicmp together couldn't bid for an entire lot. > 11/44's, TU77's...hmmm. That's an interesting idea. Form a club centered around the list, maintain an online bank account, take pre-auction votes on maximum bids for a particular lot, and have a person local to each relevant auction go on behalf of the group. -Dave McGuire

25 years, 3 months

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20,046 pages of scanned old docs online?

by jfoust＠threedee.com

I've made contact with a guy who's scanned 20,046 pages of the docs listed below, at 300 to 400 DPI. He first told me about the UCSD p-System docs he'd scanned. Below the list is his description of the process he followed. I'm planning to get a copy of what he has and burn it to CD-R. Does anyone else have an interest in these docs, or have any ideas about distribution without massive copyright violation? - John 6502 MOS 6502 datasheet 6502 Assembly Language Subroutines (Leventhal) AMD AMD 29000 Memory Design Handbook Am29027 Arithmetic Accelerator Am29C327 Floating Point Processor Data General C Language Reference Manual GATE User's Manual AOS/VS Internals Manual AOS/VS Programmer's Manual, volume 1 AOS/VS System Calls Dictionary CEO User's Manual Eclipse 32-bit Principles of Operation Eclipse 32-bit System Functional Characteristics Fortran-77 Environment Manual Fortran-77 Reference Manual Fairchild Clipper User's Manual IDT RISC System Programmer's Guide R3000 Assembly Language Programmer's Guide R3000 Hardware User Manuals R3000 Language Programmer's Guide High-speed CMOS databook Motorola 68000 Family Reference 68020 User's Manual 68851 User's Manual 88100 User's Manual 88200 User's Manual Linear Interface Integrated Circuits NCR 53C90A/B Advanced SCSI Controller (2 different manuals) 53C94/5/6 databook 53CF94/96-2 Fast SCSI Controller Disk Array Controller Firmware Disk Array Controller Hardware Disk Array Controller Software Floppy Disk Controller (SCSI-to-FD) National Semiconductor NS32532 Datasheet Series 32000 Programmer's Reference Manual DP8490 Enhanced Asynchronous SCSI Interface NS32CG16 Programmer's Reference Supplement Graphics Handbook Series 32000 Databook DRAM Management databook Embedded Controller Databook Ohio Scientific C4P User's Manual (2 different manuals) 65V Programmer's manual Schematics for: 502 CPU board 505 CPU board 527 24K memory board 540 Video board 542 Polled Keyboard Pinnacle Systems 2 User's manuals for their 68k machine (My P-system machine) P-system manuals IV.12 Operating System Reference Program Development Reference Application Development Guide Fortran 77 Reference Assembler Reference Weitek WTL4167 Floating-Point Coprocessor datasheet Most of these are from about 1988 to 1992, with the exception of the OSI documentation, of course, which is from 1979. --- > What sort of process did you follow? What sort of devices? As far as the process, I scanned a manual in and checked to make sure all the pages were there. If they weren't, I'd scan the pages that didn't make it, and go through all the pages again. I'll admit this is a little anal, but better safe than sorry. (When you're using a lot of shell scripts, you never know if you accidently deleted a page with an "mv" command.) When all the pages where there, I'd go through the manual one more time to check for general quality (no folded corners, no torn pages, etc.) If all was good, the manual would be moved to the directory that would be the root directory of my CD-ROM. That's pretty much it. The big manuals of more than 1000 pages really sucked, because I'd generally have to make 3 or more passes to get those completely correct. If I was going to do it again, I'd probably break the larger manuals into smaller chunks to avoid this problem. One thing that made the whole process a lot easier was the netpbm utilities. I wrote a script to convert the manuals from ~2500x3300 TIFs to ~500x600 GIFs. My machine takes about 2 seconds to process a 300-400 DPI TIF, but only a fraction of a second for a 75 DPI GIF. I'd run my script, then do something else for a while. When it was done, I could flip through the GIFs with GQview and inspect about 2-4 pages per second. That saved a lot of time. I assume that, by "devices", you mean what type of scanners I used. I started with an HP 6350cse (with ADF) that I bought for this very purpose. However, having never owned a scanner before, I was a little disappointed with how slow the "fast" scanners are. Fortunately, imaging is an integral part of the software my company sells and, as luck would have it, we were demoing a new scanner from Fujitsu. This thing literally does 60 pages/min at 300 dpi - *both* sides. It's about half that fast at 400 dpi, which I had to use for the IC databooks to get the fine print. Needless to say, I did most of my scanning on that. By the way, to date, I've processed 20046 pages. I'm kinda burned out, though, so it'll be a while before I do any more.

25 years, 3 months

4
3
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SUN networking problems

by pete＠dunnington.u-net.com

On Mar 21, 18:48, Tony Duell wrote: > > You can get > > N-to-BNC adaptors and BNC terminators for pennies. > > Can you? Where? The last N-BNC adaptors I bought were several pounds > each... And the cheapest (decent) BNC 50 ohm terminators I have found are > home-made (solder-type BNC plug + 51 Ohm resistor). I thought I'd seen them (N-BNC) in the CPC catalogue, but when I looked just now, I found N-to-anything_but_BNC for around ?1.50. Maybe I was thinking of Farnell (who ain't so cheap). Cirkit sell them for ?2.69. Ouch! I've just found the price in the Electrospeed catalogue (?8). I got most of mine from older network installations, where people had added thinnet to (or in some places, instead of) original thick yellow ether. Older N-series tranceivers often got reused in such situations, I find. Electrospeed still claim to sell coax taps for ?22, and assorted transceiver adaptors (N-series ?15, straight single BNC ?12, dual (T) BNC ?14). -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 3 months

1
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Update: AAUI TP dongle and Basilisk II Mac emulator

by jpero＠sympatico.ca

Bill and everybody else, I'm pleased with that dongle thing, I used it to transfer the stuff first with a HVF explorer to place the files in HFS image disk w/ raw data fork selected. Then moved stuff between pc emulating a Mac (basilisk II, freeware) to real Mac. Far easier than all those disks sneakernet and I didn't have correct scsi cable for my PCI controller (HD connector to centronics needed). Nearly 60 MB moved at snail's pace due to emulation but does work as it should be which is fine with me. :-) All this stuff is freeware or demoware, just the same it earned their worth for me. Treashing around story: Took me hours searching because the pc-mac sharing or conversion utilities via network (examples: DAVE, MacPclan are over $120 US or more which will break my limited canadian budget and very leery about asking so much of my personal details before obtaining demo programs. When I saw a webpage suggesting Basilisk II, I pounced on it like a cat. Then more hours on basilisk II/sharing figuring out and RTFM'ing lot of stuff to get everything to work but I succeeded! Tip: Somewhere in that netscape/IE on peecee is screwing the pooch on hqx, before clicking that ok button to download, change .hqx for .txt. When d/l done, rename it back. That works. I still don't figure out why HVF explorer doesn't work on mac formatted disks but basilisk II will read/write these 1.44 disks, remember peecees can't deal with 400K/800K due to FD controller issues. That is what real Mac I moving stuff to is for. Amazing how small that Basilisk II is and fairly stable, nothing left out to make mac emulation to work and 100% lookalike. Funny, that ran like scalded rabbit on duron 800. It stutters sometimes because both HFS images were on old 540MB hd, other than that, it crackles. Bill, Thanks for that dongle!! Wizard with big smile. FYI: Basilisk II is ported to linux, Amiga, win9x/NT/2000 and one other I forgot. Only supports 512K or 1MB Mac roms, everything you need are bundled in one download except for HVF explorer. Download that 11MB PDF basilisk II manual is a must as it has new info in it, far more info than what I have seen on webpages. This file does contains vital info that is required to get started and installing OS, plus at least one extension has to be OFF.

25 years, 3 months

1
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Looking for some common switch settings...

by greg＠ciswired.com

Does anyone have handy the switch settings for DEC PDP-11/44 memory boards? I have a collection of third-party boards (nat. semi and standard memories) but no documentation on them. I suspect they use the same dip settings as DEC MS11-xx (M8743) boards (of which I also have a few but no docos). I'm also looking for DZ11 (M7819) IRQ/CSR switch settings. Thanks! greg Gregory Travis Cornerstone Information Systems ATS greg(a)ciswired.com 812 330 4361 ext. 18

25 years, 3 months

1
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NeXT '040 Cubes

by pete＠dunnington.u-net.com

On Mar 21, 21:22, Tony Duell wrote: > > > > On Mar 21, 10:07, MTPro(a)aol.com wrote: > > > > > << First, put a 50-ohm terminator on that connector, so the NeXT thinks > > it is connected to a live (but very small!) network. >> > > > > > > Is this something I can pick up at say Radio Shack? Does it looks kind of > > like a little metal cap that fits on the coaxial connector? > > Wait a second. Standard ethernet has a 50 Ohm terminator at each end of > the cable. so the DC resistance between the core and the shield is 25 ohms. Yes, but the standard method of terminating a single (isolated) point is to use ONE terminator (maybe not for Vaxstations :-)). > According to all the notes I have on how ethernet transceivers really > work, the transmitter is a current source, which develops a voltage > across this impedance. The receiver is a voltage sensor. If 2 > transmitters send at the same time you get a greater-than-normal voltage > on the cable, which is what is detected as a collision. > But of course, _1_ transmitter will develop twice the voltage across 50 > ohms as across 25 ohms. Which means having 1 terminator on the network > (however short -- even just on the network connector) will generate > 'collisions' all the time I've not looked that closely at the internal circuitry of a transceiver, but I can assure you that that's NOT what happens with any transceiver I've tried. Having no terminator at all does indeed make many transceivers believe there are constant collisions, but I've always found one to be enough to prevent that, providing it's directly on the transceiver. The official method for SGIs is to put a microtransceiver with a single terminator on the AUI connector. > You should use a non-inductive resistor here. Some cheap ready-made > terminators are anything but... Yes, and it should also be around 1/2 - 1 watt. Many terminators use 1/4 watt and get away with it, but the nominal voltage is 10V (and hence from P=V^2/R, and allowing a 50% duty cycle, you want 1W). > > types: those with a characteristic impedance of 50 ohms, used for test > > equipment, thin Ethernet, etc; and those with a characteristic impedance of > > 75 ohms, mostly used for TV and video signals). > > IIRC, the central pin is of slightly different diameters (IIRC the 75 ohm > one is thinner). If you put the thin-pinned type of plug onto the other > type of socket, it won't always make good contact. If you do the reverse > you can damage the socket contact. > > And of course putting mixed connectors together will cause a (small) > mismatch which can be a bad thing. Yes, they are different, and I *think* that's the right way round :-) -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 3 months

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Lovely period furniture: VAX 4000-500

by steven_j_robertson＠hotmail.com

Heck... If it weren't for all these HP minis, I'd have no furniture at all. Steve >From: Bob Brown <bbrown(a)harper.cc.il.us> >Reply-To: classiccmp(a)classiccmp.org >To: classiccmp(a)classiccmp.org >Subject: Re: Lovely period furniture: VAX 4000-500 >Date: Thu, 22 Mar 2001 08:41:00 -0600 > >My TV sits on an old IBM 3274 control unit. > >Makes a wonderful TV stand! > >-Bob > > >>Don't rule out the VAX 11/725. A nice end table with a little more >>room on top. >>Remove the RC25 and you have a nice storage area for your snacks.... _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com

25 years, 3 months

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pdp 11s to be auctioned at Goddard

by mcguire＠neurotica.com

I'm pretty much full here too...but there are some surplus facilities nearby that aren't really open to the public, but that I have access to. Lots of larger DEC stuff (a lot of VAX6000s) shows up there. Maybe we should set up such a thing. There would be a number of things to arrange to keep things running smoothly, but I think it could be done. -Dave McGuire On March 21, Brian Roth wrote: > Dave, > > That could work for the salvage yards as well. I have a nice digital > camera to take shots of this stuff here locally. The only problem is > that the stuff gets recycled pretty darn quick. I try to save what I can > but until I get my new building put up, I'm bursting at the seams. > > Brian. > > Dave McGuire wrote: > > > On March 21, Bill Pechter wrote: > > > Too bad classicmp together couldn't bid for an entire lot. > > > 11/44's, TU77's...hmmm. > > > > That's an interesting idea. Form a club centered around the list, > > maintain an online bank account, take pre-auction votes on maximum > > bids for a particular lot, and have a person local to each relevant > > auction go on behalf of the group. > > > > -Dave McGuire

25 years, 3 months

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classiccmp-digest V1 #545

by kebabthesheep＠yahoo.com

> Date: Sun, 18 Mar 2001 23:45:19 -0500 (EST) > From: "R. D. Davis" <rdd(a)smart.net> > Subject: Sun VME bus boards (was: This is CLASSIC COMPUTERS) > Sorry... I've been hacking some database stuff and Perl all weekend > and I guess it obfuscated my mind a little. > > Speaking of classic computers, is anyone here interested in purchasing > some Sun VME-bus boards? I've got a bunch of them that I'm trying to > sell for someone, and I'd like to free up some of the space that > they're taking up... lots of CG3 boards, various CPUs, etc. While I'd > like to just give these away, I agreed to pay $x dollars apiece for > each one sold or transferred to someone else, so I'd like to at least > cut my loss (as I'll be taking a loss). The agreement that I made also > means that I need to find good homes for them, so I'll only sell them > to those who are truly intereted in using them. I'd certainly be interested in a couple of VME cg3s :) Have you had chance to make a list of what other boards you have? Have you posted/are you going to post this over to sunrescue? (rescue(a)sunhelp.org) you'll get a lot more takers from them :) > But wait, that's not all, I'll provide a chance for a FREE *BONUS* to > all who purchase these; that's right, I'm giving away something for > absolutely nothing! Free arachnids! Disclaimer: Quantity of > arachnids per board may vary; some boards may contain no arachnids; > purchasers responsible for all consequences. ;-) > I take it the arachnids have taken up residence? Dave. __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/

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