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

ArcNet and the Pursuit of Multiple Topologies

by dhquebbeman＠theestopinalgroup.com

> > At 10:26 AM 10/10/01 -0400, you wrote: > > >On October 10, Iggy Drougge wrote: > > >> >How about the original DIX Ethernet? Try a web search for Aloha. > > >> > > >> Was DIX really the original Ethernet? Wasn't that 10 Mbps and all? > > > > > > I believe the original Ethernet was 3Mbps. > > > > > > -Dave > On Wed, 10 Oct 2001, Tom Uban wrote: > > > Hmm, looking at my copy of: "The Ethernet, A Local Area Network, > > Data Link Layer and Physical Layer Specifications", from Digital, > > Intel, and Xerox, September 30, 1980 -- the specification says: > > "Data rate: 10 Million bits/sec" > > I don't know if it went to standard, but there definitely was 3Mbps > ether. I have a CHANNEL-3Mbps card for an S/370 here. You're right, Dave & Sridhar... from: http://www.baylor.edu/~Sharon_P_Johnson/etg/ethernethistory.htm 1972-The first experimental Ethernet system, Alto Aloha Network, was developed by Metcalfe and his Xerox PARC colleagues. It was designed to interconnect the Xerox Alto, a personal workstation with a graphical user interface, and linked Altos to one another, and to servers and laser printers. The data transmission rate was 2.94 Mbps [Spurgeon]. Regards, -doug q

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by mcguire＠neurotica.com

On October 10, Iggy Drougge wrote: > >How about the original DIX Ethernet? Try a web search for Aloha. > > Was DIX really the original Ethernet? Wasn't that 10 Mbps and all? I believe the original Ethernet was 3Mbps. -Dave -- Dave McGuire Laurel, MD

24 years, 8 months

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Slightly OT: What to do with a DEC 3000/300?

by healyzh＠aracnet.com

> Anyway, I've heard that 64Meg RAM was awfully tight to run VMS on an Alpha, > but is it still faster than Tru64 Unix? (The machine was no screamer, but > it was still faster than my wife... ;-) Or should I just sell it to someone > willing to give it a good home? (I have too many computers now - and I'm > trying to purchase a [smaller] house so may be moving soon... I *need* to > consolidate my collection & am downsizing machines which I will never have > time to tinker with...) If the DEC 3000/300 is anything like a DEC 3000/300LX then you should be able to get some 72-pin true parity SIMMs and upgrade your RAM. If you can get it up to a minimum of 112MB it should work great. If you can get it up to 96MB it will work OK. Less than 96MB, and it will work, but will probably do a fair amount of swaping. OpenVMS V7.2 won't even load if you've got less than 64MB RAM. It's definitly a good VMS box, so I say keep it, get some more RAM for it, and play with VMS on it. I used my DEC 3000/300LX as my OpenVMS server for a while with a BA350 chassis attached to it for disks. Zane

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by pete＠dunnington.u-net.com

On Oct 9, 17:33, Eric Dittman wrote: > > > > IP over carrier pigeon!! > > > > > > UUCP over floppies ferried by cars! BLEEEAAAAAARGH!! > > > > > > Peace... Sridhar > > > > Unless I'm mistaken Dave is talking about a transmittion method that's > > actually been used. There is actually an RFC for it. > > Haven't carrier pigeons been extinct long before IP and UUCP were > developed? Nope. The RFC exists (RFC 1149) and there has been a practical implementation. See http://www.blug.linux.no/rfc1149/ vegard@gyversalen:~$ ping -i 900 10.0.3.1 PING 10.0.3.1 (10.0.3.1): 56 data bytes 64 bytes from 10.0.3.1: icmp_seq=0 ttl=255 time=6165731.1 ms 64 bytes from 10.0.3.1: icmp_seq=4 ttl=255 time=3211900.8 ms 64 bytes from 10.0.3.1: icmp_seq=2 ttl=255 time=5124922.8 ms 64 bytes from 10.0.3.1: icmp_seq=1 ttl=255 time=6388671.9 ms --- 10.0.3.1 ping statistics --- 9 packets transmitted, 4 packets received, 55% packet loss round-trip min/avg/max = 3211900.8/5222806.6/6388671.9 ms vegard@gyversalen:~$ -- Pete Peter Turnbull Network Manager University of York

24 years, 8 months

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NeXT users...

by vance＠ikickass.org

I just discovered Window Maker. Installed it on my SGI Indigo2 Maximum IMPACT. Oh my god. It's like a dream. Running IRIX with the interface of NeXTstep. I love it. Time to install it on all my headed workstations. Peace... Sridhar

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by mcguire＠neurotica.com

On October 9, Pete Turnbull wrote: > much larger house :-) The same fibre that carries FOIRL can (if it's the > right size, 50/125) carry 10baseF, 100baseFX, 1000baseSX, ATM, FDDI, ... FDDI generally uses 62.5/125 fiber. -Dave -- Dave McGuire Laurel, MD

24 years, 8 months

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NeXT users...

by technos＠nerdland.org

Another good one is Enlightenment.. It has some crazy deps, but it supposedly compiles and looks mad snazzy.. I've used it on Sun and Alpha (as well as a myriad of wintel) but never on SGI. Jim On Wednesday, October 10, 2001 12:27 AM, One Without Reason [SMTP:vance@ikickass.org] wrote: > > I just discovered Window Maker. Installed it on my SGI Indigo2 Maximum > IMPACT. Oh my god. It's like a dream. Running IRIX with the interface > of NeXTstep. I love it. Time to install it on all my headed > workstations. > > Peace... Sridhar

24 years, 8 months

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2.88 MB floppy drive, scsi?

by technos＠nerdland.org

Non-IBM, PS/2 floppy drives?? Isn't that an oxymoron? What about the Mitsubishi drives made for IBM? Jim (Isn't misuse of grammar fun?) On Wednesday, October 10, 2001 4:46 AM, Mike Ford [SMTP:mikeford@socal.rr.com] wrote: > I've been looking for some 2.88 non-IBM PS/2 floppy drives, and I found > some, but the guy says they are SCSI. Is that nuts or what? > > TEAC FD-235 J 5670-U W/SCSI Card > TEAC FD-235 J 5670-U W/SCSI Card > TEAC FD-235 J 610 W/SCSI Card > > Some of the HP/Apollo 725/50 computers I found recently had SCSI floppies, > but it looked like the SCSI part might be detachable. I wonder if I should > bother getting the above drives to work in a PC, which I would have to fuss > around adding SCSI to? >

24 years, 8 months

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Squealing CRTs

by dittman＠dittman.net

> Now for real HV - I was told by an ex-electrical > engineer - that he watched while someone > was measuring up for a new HV cabinet with > a tape measure. The usual metal sort you or I > might use for DIY. He dropped it and shorted > out the busbars, instantly melted the tape > and ended up in hospital with major burns > across his arms and chest. At a place I used to work we were setting up a new raised floor. The (licensed!) electrician that was setting up the new UPS was leaning with his hand against one end of the bank of batteries. He leaned down to tighten the nut on the other end of the bank of batteries with a metal socket wrench. The UPS was about the size of four large refrigerators side-by-side, 90% of which was filled with batteries. He nearly died and spent quite a long time in the hospital. The investigation kept the area closed for almost a week. -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

24 years, 8 months

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emulex uc13/14

by telefonk＠mail.bme.hu

My name is Mihaly Fazekas. My english is not good. My question: where can i find info/manual/sheet from Emulex UC13/14 Unibus SCSI controller?

24 years, 8 months

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Half-duplex VT420?

by mcguire＠neurotica.com

On October 9, Iggy Drougge wrote: > Since I'll be running another headless computer (HP 9000/380), I brought home > my VT420. Nice terminal, but unfortunately this specimen will only talk, not > listen. > At first, I suspected my HP had lost its settings (the stupid boot PROM must > be set via the keyboard to use a serial console). I proceeded to bring my HIL > keyboard home and set it (without any screen) to use a "remote" console again, > and the machine seemed to acknowledge that, beeping happily. But no response > from the terminal. So I tested it with my DECstation. No response there > either. So I hooked it up to my Amiga. Typing at the keyboard, there was > output in NComm, but doing the opposite didn't work at all. > So we have only one-way communication. What could be the problem? Is flow control enabled on the terminal? I assume you're using a DB25 adapter at the other end of an MMJ cable. Try turning off flow control in the communications setup menu and shorting pins 2-3 on the connector. At that point the terminal should echo what you type back to the display. If it doesn't, you might have a toasty RS232 line receiver in your terminal. -Dave -- Dave McGuire Laurel, MD

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by technos＠nerdland.org

Naw.. Passenger pigeons were good eatin'.. They were hunted to death. Jim On Tuesday, October 09, 2001 11:41 PM, Fred Cisin (XenoSoft) [SMTP:cisin@xenosoft.com] wrote: > > One is extinct, the other isn't. > > Due to trying to carry passengers?

24 years, 8 months

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Bird Electronics

by jpl15＠panix.com

The passenger pigeon modulates the carrier pigeon. (Although this certainly makes for messy packets.) Cheerz John

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by technos＠nerdland.org

One is extinct, the other isn't. Jim On Tuesday, October 09, 2001 10:37 PM, Dan Linder [SMTP:dlinder@uiuc.edu] wrote: > On Tue, 9 Oct 2001, Peter C. Wallace wrote: > > > > Haven't carrier pigeons been extinct long before IP and UUCP were > > > developed? > > > > Nah, Its passenger pigeons taht are extinct... > > okay, I'll bite... what's the difference between a "carrier pigeon" and a > "passenger pigeon"? > > - Dan > > Dan Linder / dlinder @ uiuc.edu > Graduate Student, College of Engineering, Dept. of Computer Science > - Dept. of Computer Science Teaching Assistant > - DRES Computer Accessibility Researcher

24 years, 8 months

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New toy, some questions..

by technos＠nerdland.org

For a birthday present, my girlfriend tracked down and bought me a Radio Shack PC-1 with cassette adapter (Both in orig boxes!). It compliments nicely the PC-2 and plotter I already have. After addition of four 1.35V zinc-air hearing aid batteries, it's humming along on my desk counting up by eights.. Does anyone still have software for this beastie? My other Q is converter programs. wav2bin (Sharp calc converter) supports it fine (its just a rebadged PC-1211) but the companion program bin2wav does not. Do other conversion programs exist? Are there any that run under *nixen? Any with source? I have tried contacting the fine folks at www.pocketmuseum.com, as they seem to be the author of the software mentioned already, to no avail (broken email addy). Jim

24 years, 8 months

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8073-based SBC info

by ajp166＠bellatlantic.net

It's NIBBLE Tinybasic, there was an old BYTE or KB Article on the earlier 8a500 version of same. _If_ I ever get to the bottom of my pile I have the manual for the National version of the SBC with the 8073 on it. Allison -----Original Message----- From: Richard A. Cini, Jr. <rcini(a)optonline.net> To: ClassCompList <classiccmp(a)classiccmp.org> Date: Tuesday, October 09, 2001 9:26 PM Subject: 8073-based SBC info Hello, all: I just received a National Semiconductor SBC kit that's based on its 8070-series 8-bit processor. It's got a version of TinyBASIC written by National as an instrumentation and control language. I have a family data sheet and a short industry article but no programming or user's manual. The board is manufactured by Sterling. There is almost no information on this board available through the usual search engines. Any info appreciated. Thanks. Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

24 years, 8 months

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VMS, UCX, DHCP?

by ajp166＠bellatlantic.net

Simple solution, use a PC for it's best other use {first one is doorstop} and load up linux as a NAT box and put that in between cable and VAX. Then you can run the vax with static IP. Or better yet use a Microvax2000 and run netbsd so you dont have to have a PC in that spot. Allison -----Original Message----- From: Iggy Drougge <optimus(a)canit.se> To: Classic computing <classiccmp(a)classiccmp.org> Date: Tuesday, October 09, 2001 11:39 AM Subject: VMS, UCX, DHCP? >Now that I've got "broadband", I'd like to see my VAXstation on the net. It's >running VMS 5.1 and UCX, but does it have any DHCP capabilities? >It's not a great problem, but if there is some option for getting config info >via DHCP, it'd save me the trouble of setting up a NetBSD environment in order >to run dhclient. =) > >-- >En ligne avec Thor 2.6a. > >Amiga 4000/040 25MHz/64MB/20GB RetinaBLTZ3/VLab/FastlaneZ3/Ariadne/Toccata > >

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by technos＠nerdland.org

What about StarLan?? I think I have some full length 8-bit ISA StarLan cards in a closet if you want em.. No other equip tho.. Jim On Tuesday, October 09, 2001 1:50 PM, Tarsi [SMTP:tarsi@binhost.com] wrote: > Dear all, > > I've decided that one of my goals is to run every networking topology > possible in my house, regardless if I actually NEED to run them or not. :) > > My plan is to place 1 linux box running a card from each topology in it and > use that to bridge all (or almost all) topologies. > > I currently have running 10bT ethernet, 10b2 ethernet, Localtalk over > PhoneNET and the beginnings of Arcnet. > > In light of such, I have a series of questions: > > 1) Who knows some stuff about ArcNet? I've gotten 4 cards (8-bit ISA) and a > > 16-port active hub. I've read somewhere that cards are either hubbable or > not. Any other info on that? > > 2) Anyone have any (I think it is) 93ohm coax arcnet patch cables that they > want to get rid of? > > 3) Anyone got good resources on ThickNET? (10b5 I think it is?) I know it > was run back in the day, and I know some precursory things about it (the > funky vampire taps, etc.) Anyone have either resources or hardware on this > topology that they'd like to share/sell/etc? :) > > 4) Any other interesting topologies I should try? I have plans to do: > Arcnet, FDDI, Token ring, Localtalk, 10b2, 10b5, 10bT, 10bTX, 10bFiber, and > (eventually) 802.11b wireless. > > Thanks folks! > > Tarsi > 210 > > > -- > ---------------------------------------------- > Homepage: http://tarsi.binhost.com > binHOST.com: http://www.binhost.com > Forever Beyond: http://www.foreverbeyond.org > ----------------------------------------------

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by mcguire＠neurotica.com

On October 9, Absurdly Obtuse wrote: > > Unless I'm mistaken Dave is talking about a transmittion method that's > > actually been used. There is actually an RFC for it. > > I know someone who measured the bandwidth and latency of himself carrying > a backpack full of floppies across the campus of Clarkson. This sounds like the age-old "never underestimate the bandwidth of a station wagon full of magtapes" story. -Dave -- Dave McGuire Laurel, MD

24 years, 8 months

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8073-based SBC info

by rcini＠optonline.net

Hello, all: I just received a National Semiconductor SBC kit that's based on its 8070-series 8-bit processor. It's got a version of TinyBASIC written by National as an instrumentation and control language. I have a family data sheet and a short industry article but no programming or user's manual. The board is manufactured by Sterling. There is almost no information on this board available through the usual search engines. Any info appreciated. Thanks. Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

24 years, 8 months

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VMS, UCX, DHCP?

by dittman＠dittman.net

> Simple solution, use a PC for it's best other use {first one is doorstop} > and load up linux as a NAT box and put that in between cable and VAX. > Then you can run the vax with static IP. Or better yet use a > Microvax2000 > and run netbsd so you dont have to have a PC in that spot. I actually prefer to use a little BookPC-format boxes running Linux Linux for my Internet gateway. The system is cheap, little, quiet, and doesn't get very hot. I can stick it behind my other systems. It has a large capacity IDE drive in it and I also use it for a mail and http server. -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by mcguire＠neurotica.com

On October 9, John Allain wrote: > > a 747 was packed with DLTs and flown from > > San Francisco to Seattle. > > Such a transport could easily easily exceed 1,024 TeraBytes. > (forgot the Prefixname) What'd they need all that data for? PORN!! Ahem, sorry, I just couldn't resist. :) -Dave -- Dave McGuire Laurel, MD

24 years, 8 months

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classiccmp@classiccmp.org

by cpg＠aladdin.de

On 10/09/2001 03:53:03 PM EST Dan Wright wrote: > >Dave McGuire said: >> >> IP over carrier pigeon!! > >There's even an RFC for this: > >http://www.ietf.org/rfc/rfc1149.txt?number=1149 And a proof-of-concept implementation has been done: http://www.blug.linux.no/rfc1149/ :-) :-) regards, chris

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by mythtech＠Mac.com

>4) Any other interesting topologies I should try? I have plans to do: >Arcnet, FDDI, Token ring, Localtalk, 10b2, 10b5, 10bT, 10bTX, 10bFiber, and >(eventually) 802.11b wireless. If you decide to do TokenRing, and need some cards... let me know... I have 3 box loads of them up for grabs (just pay shipping). I have ISA, Microchannel, and I think I might have had a PCI in there somewhere. I already got rid of the EISA ones. Oh, and I might have an HP Jetdirect card for TokenRing. Sorry, I have no hubs (they used hubs of a sort right?) or cables. And you forgot to list on your list of topologies SneakerNet, unless you never run anything around your house by foot. -chris <http://www.mythtech.net>

24 years, 8 months

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IBM ROM BASIC or lack thereof

by Antonio.Carlini＠riverstonenet.com

ard(a)p850ug1.demon.co.uk wrote: >But seriously, the advantage of paper manuals is that you can read them >anywhere (like in bed, on the train, etc) , you can have them open on >your workbench (where there certainly isn't room for a PC in my case), >you can write notes all over them, etc. And I find them a lot easier to >read... All very true and I completely agree. I too generally prefer paper manuals. I would also hate to read a manual on-screen cover to cover (i.e. for anything other than reference). However, my space is restricted. I could have maybe 300 manuals within easy reach here. I have a wall-mounted CD rack with space for 300 CDs just feet away. >> >> I don't expect to read my manual on the Rainbow that I >> am repairing ... that's what the PC or laptop >Need any hints? I've got a fair idea as to what goes on inside the 'bow >(pinouts, theory, etc). Some of it is not obvious (like the disk >controller test which feeds the output of the serial chip in sync mode to >the read data pin of the FDC to check that the latter can decode data >correctly). I have the tech manuals but this is the PSU (second one which I've had die on me!) The first one turned out to be the bridge rectifier ... I found a suitable replacement and bingo it came back to life. Only a few weeks later I found somewhere that sold security bits online, one of which fits the Rainbow PSU - so at least this time I won't be sawing a slow in the screw to get at the thing! This time whatever died has taken out more of the downstream stuff. I've not had too much time to look at it - you don't happen to have the PSU schematics do you? ... I've got everything else (I think) except that. >I've never quite understood this... 20-30 years ago, most computers used >standard chips. And thus they could be copied (I am not talking about >legality here). But the schematics existed. Manuals explaining the >schematics existed. In DEC, I was told that they stopped supplying them when they noticed that customers did not want them any more (and obviously these things - especially technical manuals) cost mucho denaro to produce ... schematics must already exist obviously! This was when the customer base moved from being propeller-heads to suits. >Now we have ASICs which are much harder to copy, and yet the docs don't >exist... > >Anyway, any half-decent hacker can reverse-engineer most devices in a >couple of days at most.... The board for which I am currently scribbling software has a few standard, identifiable chips on it but the interconnections are mostly mediated by a few large FPGAs. There are also some custom ASICs in there too. The memory map is entirely decided by the FPGA. Adding and removing caps resistors and other SMT components is not too bad but playing with one of the 750-plus pin BGA devices is probably beyond the realm of the hobbyist (although re-work houses do exist, so who knows?) >> my current TV came with a five year guarantee and the >> previous one was a Decca series 80 chassis that was already >I probably have that schematic somewhere... I've got a lot of volumes of >Poole+Molloy (and its successors) on the shelf. For the record, it's a Philips 21PT5322 and the other one is a Fergusson T14R. (The latter is now out of guarantee and is therfore "fair game" ... ). Antonio

24 years, 8 months

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Repair philosophy (was Re: IBM ROM BASIC or lack thereof)

by mcguire＠neurotica.com

On October 9, Mark Tapley wrote: > going to college in about 10 years, so I gotta earn tuition, and then > there's paying for the classic computer shed that the wife insists on > filling with "nice furniture" and "decorating" because she thinks of it as > a "house"....) I added a decoration a while back. It's a VAX4000-700a. Gorgeous. Functional, too. -Dave -- Dave McGuire Laurel, MD

24 years, 8 months

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Squealing CRTs

by Antonio.Carlini＠riverstonenet.com

> Chris [SMTP:mythtech@Mac.com] wrote: > >I wasn't that lucky... when I did it, I shorted a cap thru my finger >(fortuantly, just thru ONE finger, tip to knuckle). I was working blind You don't need HV - large currents can be nasty too. The PSUs in some of the VAX 6000/7000 platforms are only +5V but can dump 100s of amps. You probably don't want to short one of those with your ring finger! Now for real HV - I was told by an ex-electrical engineer - that he watched while someone was measuring up for a new HV cabinet with a tape measure. The usual metal sort you or I might use for DIY. He dropped it and shorted out the busbars, instantly melted the tape and ended up in hospital with major burns across his arms and chest. Having been hit a few times by mains (240V) voltage, I've learned to be more careful and switch stuff off! Antonio

24 years, 8 months

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Repair philosophy (was Re: IBM ROM BASIC or lack thereof)

by mtapley＠swri.edu

Among quite a bit of other wisdom, Tony wrote: >Heck, all I want are things like pinouts.... Ah, the pot 'o gold at the end of the rainbow! A skilled repairman, who works for pinouts.... :-) More seriously, while I aspire to fix things like Tony, I find that ignorance and lack of time are powerful disincentives. (The little one needs his diapers (nappies?) changed, and the bigger little one is gonna be going to college in about 10 years, so I gotta earn tuition, and then there's paying for the classic computer shed that the wife insists on filling with "nice furniture" and "decorating" because she thinks of it as a "house"....) I can swap modules. When I click the switch and nothing at all happens, and I have a new power supply on hand .... it's within my limited time and knowledge horizons to swap 'em. Getting an o-scope, learning how to use it, taking apart the power supply (and trusting that the little one won't ingest some of the nuts and washers while the medium-size one is getting a talking-to about sliding down the bannister with the power cord in tow).... well, that may be without my horizons. All this ranting leads to my question, to the group as a whole and Tony in particular: Is there a way I tell that it'll be safe to board-swap? In other words, are there symptoms I can in general use to tell me that the fault that caused damage was on the damaged (e.g.) board, and that therefore, if I have another example of that board, I won't fry it too by putting it into the place of the damaged one? - Mark

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by dhquebbeman＠theestopinalgroup.com

> In light of such, I have a series of questions: > > 1) Who knows some stuff about ArcNet? I've gotten 4 cards (8-bit ISA) and a > 16-port active hub. I've read somewhere that cards are either hubbable or > not. Any other info on that? I've never used an active hub before... and was thus limited to 4 nodes using my home-made passive hub. > 2) Anyone have any (I think it is) 93ohm coax arcnet patch cables that they > want to get rid of? I think you'll have trouble if you use anything other than 63 ohm coax... ... Formerly, the support for ARCNET in Linux was pretty week. However, there was an ARCNET/LINUX mailing list for a long time, and the members were keeping the driver sources up-to-date. The name of the list owner (or the guy cranking out the code) was, first name, Avery, last name, Pennimum or something unusal. hth, -doug quebbeman

24 years, 8 months

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VMS, UCX, DHCP?

by Antonio.Carlini＠riverstonenet.com

> Paul Thompson wrote: >I think multinet supports DHCP. I am not familiar enough with TCPIP >services for VMS (UCX), however. Multinet has a hobby program. >On 9 Oct 2001, Iggy Drougge wrote: >> Now that I've got "broadband", I'd like to see my VAXstation on the net. It's >> running VMS 5.1 and UCX, but does it have any DHCP capabilities? >> It's not a great problem, but if there is some option for getting config info >> via DHCP, it'd save me the trouble of setting up a NetBSD environment in order >> to run dhclient. =) I believe that the latest UCX (TCPIP as it is now called) does support DHCP. The manuals should be around somewhere under http://www.openvms.compaq.com Antonio

24 years, 8 months

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ArcNet and the Pursuit of Multiple Topologies

by DAW＠yalepress3.unipress.yale.edu

(reply at end...) ! On Tue, 9 Oct 2001, Tarsi wrote: ! > Dear all, ! > ! > I've decided that one of my goals is to run every ! > networking topology possible in my house, regardless ! > if I actually NEED to run them or not. :)... ..... ! > I currently have running 10bT ethernet, 10b2 ethernet, ! > Localtalk over PhoneNET and the beginnings of Arcnet. ! > ! > In light of such,... ..... ! > 4) Any other interesting topologies I should try? I have ! > plans to do: ! > Arcnet, FDDI, Token ring, Localtalk, 10b2, 10b5, 10bT, ! > 10bTX, 10bFiber, and (eventually) 802.11b wireless. ! > ! > Thanks folks! ! -----Original Message----- ! From: Absurdly Obtuse [mailto:vance@ikickass.org] ! ! FDDI would definitely be a good one to do. It uses dual ! counter-rotating rings. How about ATM? HIPPI? CI? ! CHANNEL-CHANNEL? ...And someone asked if _I_ was masochistic when I only asked about upgrading a 486! --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818

24 years, 8 months

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VMS, UCX, DHCP?

by optimus＠canit.se

Now that I've got "broadband", I'd like to see my VAXstation on the net. It's running VMS 5.1 and UCX, but does it have any DHCP capabilities? It's not a great problem, but if there is some option for getting config info via DHCP, it'd save me the trouble of setting up a NetBSD environment in order to run dhclient. =) -- En ligne avec Thor 2.6a. Amiga 4000/040 25MHz/64MB/20GB RetinaBLTZ3/VLab/FastlaneZ3/Ariadne/Toccata

24 years, 8 months

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Squealing CRTs

by optimus＠canit.se

Heller to everyone and Tony. ;-) What do you do about a squealing CRT? I've got this nice terminal which is working, but it emits a high-pitched whine which is not only unpleasant and annoying, but quite scary, too. It feels as thoughit's going to blow in your face any minute. The terminal in question is a green-screen TECO VA120. -- En ligne avec Thor 2.6a. Ky?suke: Jag heter Kurre, Kurre Carlsson! Jag: Det heter du inte alls!

24 years, 8 months

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ZX Spectrum internals (Was: ZX81 kits)

by acme_ent＠bellsouth.net

Tony Duell wrote: > Sinclair would never do anything that would cost a few pence more, even > if it made the machine more useable, or work better (or in a couple of > classic cases, even work at all). Which Sinclair machines are you referring to here -- which ones didn't "even work at all?" Glen 0/0

24 years, 8 months

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IBM PowerStation 320H...

by ndiablo＠diablonet.net

Hi! I just picked up an IBM PowerStation 320H from the property disposition warehouse of my friendly educational institution. It seems to be in relatively good shape with all components present, but all I could really afford was the system unit (which was only one dollar). Although the University seems to be pretty consistent with wiping the hard drives of all the machines that it disposes of, I'm still rather eager to try and power it up and see what the firmware's like, and whether or not it is ACTUALLY wiped. Since I don't have a monitor/keyboard/mouse for it, though, my only option is to try to use a serial console. Unfortunately, these machines use a really wierd 10-pin serial port. I've tried searching around on the Internet for a pinout, but to no avail. Does anyone here have any idea how I can break this out to something more standard? I think I remember reading somewhere it was rather similar to the PC-RT serial ports... Thanks for any help! --Sean Caron (root(a)diablonet.net) | http://www.diablonet.net

24 years, 8 months

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Looking for documentation/info

by DAW＠yalepress3.unipress.yale.edu

! >>Sounds like a 486SX/25 system upgraded to a DX2/50 with an ! OverDrive chip. ! > ! >Or somebody stuck in a DX-50 and its just running at 25 MHz. I ran an Evergreen test program on it last night. It said it was running at 50MHz, internally? ! If the chip inserted into the other socket is a plain DX-50 ! then it would be just running at 25mhz. The insertion of the DX-50 ! or a 487 'coprocessor' would've disabled the SX-25 as well, if it was ! left installed. Too bad the DX-50 got such a bad rap for heat ! problems early on. ! ! BTW, does anyone know how the mainboard tells the difference ! between the 486SX and a 486DX/487? Just looking at them, there ! aren't any pin differences externally, at least between the 486DX-33 ! and 486SX-25 I have sitting here. IIRC, it's how you set the jumpers for the clock multiplier, for the speed; and it does some sort of detection test for the numeric processor. I think... These clock speed jumpers are what I'd like to identify first. I have a DX4/100 just sitting here. Then, I want to identify the purpose of the other 20+ jumpers on this board... --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818

24 years, 8 months

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CBM8032 - wobbly screen (The saga continues)

by pete＠dunnington.u-net.com

On Oct 8, 23:11, Tony Duell wrote: > > Anneal - is that where you heat it up & hit it with a hammer? Or do you > > just heat it up and let it cool again? I forget now... It's been a long > > Heat it up and let it cool slowly (very slowly). Only for steel. Most other metals either don't care (unless the quenching is incredibly rapid) or actually require to be quenched. -- Pete Peter Turnbull Network Manager University of York

24 years, 8 months

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CBM8032 - wobbly screen

by avickers＠solutionengineers.com

Hi again folks, My US 8032 turned up today (yay!). Since I can't modify the transformer (unfortunately - it looks like the US one doesn't have dual primary taps like the UK one), I've swapped it out with the 240vac transformer from my other (still broken) 8032. This machine has a wobbly screen, just like the 8032-SK (which was broken, but I installed the working motherboard), the other 8032 (which was working, until I swapped the broken m/b), and the 3016. In fact, the only PET I've got which *doesn't* have a wobbly screen is the 2001. Well, it does wobble, but only a tiny bit. ISTR a discussion (mostly with Tony) about dried electrolytics maybe causing the problem. However, I spoke to the chap in the US who said that when the 8032 left America it had a rock-steady screen... Since I left the big cap in place, it can only be the transformer which is causing the wobble - can't it? I genuinely don't know. That's the only part I've swapped in the new 8032. Could a flakey transformer be making the screen wobble? How do transformers go flakey anyway, if indeed they *can* co flakey? Or is the US chap telling porkies? Thanks, again, in advance. -- Cheers, Ade. Be where it's at, B-Racing! http://b-racing.co.uk

24 years, 8 months

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Half-duplex VT420?

by mcguire＠neurotica.com

On October 9, Iggy Drougge wrote: > But if I have a toasted line driver, wouldn't that strike both inbound and > outbound data? Nope...many RS232 interfaces are built with 1488 driver and 1489 receiver chips. Nowadays the Maxim MAX232 (and family) chips are popular for that sort of thing since they only require +5V...but I'll bet the VT420 uses 1488/1489 chips. -Dave -- Dave McGuire Laurel, MD

24 years, 8 months

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Looking for documentation/info

by DAW＠yalepress3.unipress.yale.edu

I have a Unisys 486 computer. It's a SX-25, with a DX-50 in it also. It's mfg date is 10/92, and style number is SG-3102-425. It's "plateau" is labelled Evaluation Unit A. That would explain the XXXX in the FCC ID field... On the motherboard itself, it has a sticker with... 43611896-000 PW300 486SX/25 9240 AVEX ...while near the 30-pin memory, printed on the board is... UNISYS PW2 300/486 PWBA 43188028-000 Does anyone know where I can find out what the jumpers do on this board? Or other specs for it? I though I heard someone mention dual processor WRT this board, but I doubt it. There is also a smaller LIF socket next to the 2 LIF processor sockets. IIRC, that is for a 487 math co-processor... --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818

24 years, 8 months

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Free terminal

by optimus＠canit.se

I found this on USENET. Interesting? Mon, 08 Oct 2001 20:36:40 comp.sys.atari.st Thread 37 of 38 Lines 10 Free Terminal No responses DAVID L. ORMAND <dlormand(a)aztec.asu.edu> at Arizona State University Newsgroups: comp.sys.atari.st I know this isn't quite the forum for this, but maybe there are old computer types out there (mainframe hobbyists?) who would be interested. I've rescued a practically new-in-box Visual 50, which is an ASCII RS232 terminal with your classic green CRT look. It handles VT52 and ADM3A protocols. Includes operator's and maintenance manuals (with schematics!). I've tried it out and it works fine. I don't want anything but the shipping to a good home >from Tucson, 85711. -- En ligne avec Thor 2.6a. About 15 years ago(in 1984), I played many time HYDLIDE like monkey's self- acting! HaHaHa!! Here in Nippon(Japan), many many MSX Freak played HYDLIDE 1/2/3 on MSX1/2. Perhaps, also you like HYDLIDE series!!! K. Ikeda, MSX-Print

24 years, 8 months

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Still looking

by dittman＠dittman.net

> > The 21064 should work in a PC64 and the 21164 should work in either an > > EB164 or PC164. I've got extra PC64, EB164, and PC164 motherboards but > > you're overseas so finding one nearer to you would probably be cheaper. > > Do you know where I could find some docs that I could check to see if my > Alpha chips will work with these boards? I downloaded Digital/Compaq docs, > but can't find any informoation that confirms that these chips will work > with the boards you mention. The motherboard manuals were on the Digital website. They have probably moved around since I looked at them last. I'll see if I have the PDF files stuck somewhere. -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

24 years, 8 months

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Looking for documentation/info

by DAW＠yalepress3.unipress.yale.edu

!From: John Ruschmeyer [mailto:jruschme@Mac.com] ! !> From: David Woyciesjes <DAW(a)yalepress3.unipress.yale.edu> !> Date: Mon, 8 Oct 2001 16:49:55 -0400 !> !> I have a Unisys 486 computer. It's a SX-25, with a DX-50 in it also. !> It's mfg date is 10/92, and style number is SG-3102-425. !>t's "plateau" is !> labelled Evaluation Unit A. That would explain the XXXX in the FCC ID !> field... !> On the motherboard itself, it has a sticker with... !> 43611896-000 !> PW300 486SX/25 !> 9240 AVEX ! !Sounds like a 486SX/25 system upgraded to a DX2/50 with an !OverDrive chip. Close. But they are both regular 486 processors. 486SX/25 & 486DX2/50 !> ...while near the 30-pin memory, printed on the board is... !> UNISYS !> PW2 300/486 !> PWBA 43188028-000 !> !> Does anyone know where I can find out what the jumpers do on !> this board? Or other specs for it? I though I heard someone !> mention dual processor WRT this board, but I doubt it. There !> is also a smaller LIF socket next to the 2 LIF !> processor sockets. IIRC, that is for a 487 math co-processor... ! !I doubt that its for a 487... I almost wonder if this was some kind of !386/486 board. Well, it's a 15x15 pin socket, similar to the 17x17 socket for the 486 processors... If only I had the docs... I'd like to find out how fast I can push this board... --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818

24 years, 8 months

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need some advice on some VAX boards ...

by mcguire＠neurotica.com

On October 4, Ethan Dicks wrote: > I thought that it specifically _was_ the -1. I _think_ I have a DEC- > badged RD-32 (ST-252-1) from a Pro380 VAX 8530 console, but I might > be mistaken. Maybe they got what they could get in later years. Probably so. > > The ST251 had an average access time of 40ms (if memory serves) and > > the ST251-1 was 28.5ms. > > That sounds right. Stepper motor vs. voice coil. (The ST-225 was > something horrible like 65ms or more; I used to think seek-time didn't > matter much on a micro, but when I went from 65ms to 28 on my Amiga, > _wow_!) The ST251-1 is a stepper drive also, believe it or not. They actually built a stepper positioner that achieved 28.5ms. Back when it was new I heard something about them having patented it or something. The ST225 was indeed 65ms...scary slow. It made a great distinctive "peep-peep" sound, though...which I liked even more than the [still rather cool] "chirp-chirp" sound of the ST251 and ST251-1. :-) I believe the first voice-coil drvie in that family was the ST-4096, but I'm not positive of that. That was one nice drive. -Dave -- Dave McGuire Laurel, MD

24 years, 8 months

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Oddball memory (?) sticks....

by DAW＠yalepress3.unipress.yale.edu

Another 'whats-it' question here. I have two kinds of, what look like 72-pin memory... The first is only 64 pin, has 8 chips (AAA1M300J-08 NMBS 9122), with an empty spot for a 9th chip. Printed on the back - "1X964P A (in a circle) 9115". Apparently made by Microtech. My guess is it's 1MB non-parity memory, but I don't know what uses 64 pin memory sticks. I have 4 of these sticks. The second is 68 pin, 2 chip memory. Printed on the back, they're made in 1994, in the USA, by Cubig Inc. Model number (I think) of VM512K. 512KB memory sticks? Have 3 of them... Anyone have an idea what these are, and what they're for? --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818

24 years, 8 months

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Hard Drives

by ajp166＠bellatlantic.net

Well sice this is not a PC centric group we may not be the best place for advice. However... JTS was a short lived supplier is low cost IDE drives and were noted for high failure rates though there were the occasional decent one in the pack. They were also very slow compared to the better WD, Seagate, Quantum and Maxtor. Oh, JTS disappeared withing two years after they show up. Allison -----Original Message----- From: Pete Turnbull <pete(a)dunnington.u-net.com> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Sunday, October 07, 2001 6:43 PM Subject: Re: Hard Drives >On Oct 7, 16:50, ajp166 wrote: >> Beats me what that drive is. This is a group for hardware over 10 years >> old. >> If it is that old you likely going to be fixing it yourself. > >> -----Original Message----- >> From: CByrd87043(a)aol.com <CByrd87043(a)aol.com> >> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> >> Date: Sunday, October 07, 2001 3:48 PM >> Subject: Hard Drives >> >> >> >I have a Hard Drive model P1200-2af. I need to know where can I send it >> to >> >get it fix or replace. It just stop working. > >It's a nothing-special 1.2GB IDE drive with a bad reputation, made by JTS. > JTS are no more, so the only likely option is to replace it with a >Seagate, WD, or whatever. > >JTS were famous for, amongst other things, buying part of Atari from the >Tramiel family, laying off a lot of staff, and then selling it to Hasbro >shortly after being de-listed by the stock exchange and shortly before >going bust in 1998. > >-- >Pete Peter Turnbull > Network Manager > University of York

24 years, 8 months

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Osborne OCC1

by acme_ent＠bellsouth.net

Joe wrote: > One of mine has a MODEM but I've never tried to use it. Does anyone > still support 1200 baud? The ZX-TEAM Mailbox supports 300-14400 baud ;>) Glen 0/0

24 years, 8 months

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6502 BASIC or Assembler and Intel 8271/WDC 1770 info req'd

by dittman＠dittman.net

> I was not a RS user at the time and it's quite possible that the rumors I heard > regarding the M1 and those about the M3 were geting mixed together. I wasn't > even aware that there wasn't a two-sided option on the stock model 3. The third-party controllers were most popular on the Model 1, since the stock FDC was SD. There were a few third-party controllers for the Model III and the early Model 4, but they weren't as popular as the 1793 was more capable. The stock Model 1 FDC also had reliability problems that lead to third-party data separator plug-in circuits. The only Model 1/III/4 that came stock with DS drives was the 4D. Any other DS setup was third-party. The stock III/4 controllers (both the add-on in the III and early 4 and the built-in on the gate-array 4) had no problems with DS drives. -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

24 years, 8 months

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IBM ROM BASIC or lack thereof

by Antonio.Carlini＠riverstonenet.com

ard(a)p850ug1.demon.co.uk wrote: > Yes, stupid isn't it. I've some across programs where the > help files for > installation are compressed on the CD-ROM, and thus can only be read > after installation. I wonder which genius came up with that idea. This is not terribly clever :-) > Ditto for putting hardware docs in machine-readable form > only. The time you _need_ those documents (as opposed > to just wanting a bit of light > reading) is when the machine won't boot.... Apart from the word "only" above, I humbly disagree. I have less than perhaps 300 paper manuals and printsets in all (and a fair proportion of those are non-technical Owner's Manuals and the like). Electronic manuals are a godsend for those of us who are severely restricted space-wise. Add to that all the scans of manuals and printsets that I can now find on the net, and I think that electronic manuals are terrific. I don't expect to read my manual on the Rainbow that I am repairing ... that's what the PC or laptop is for! > And a lot of modern manuals, even when you've figured out how to read > them do not contain the information that I would need. Not > even what I > would consider to be 'basic' information, like pinouts and > data formats. True but probably understandable these days. Things change so rapidly that there is no time to generate the manual. The schematics will exist somewhere (although getting hold of them will be difficult for an outsider for the usual reasons of commercial sensitivity) but documentation is usually sketchy at best. Things may be a little different in the consumer arena, but the most I've been able to find have been the TV manuals in the RTSG (or whatever it's called ... my current TV came with a five year guarantee and the previous one was a Decca series 80 chassis that was already old when I got it ... must be 10 years since I've needed to pop into a library to consult that book!). Antonio

24 years, 8 months

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IBM ROM BASIC or lack thereof

by Antonio.Carlini＠riverstonenet.com

ard(a)p850ug1.demon.co.uk wrote: > If I was being totally honest, I would probably admit that there are > times where board-swapping makes sense. Not _all the time_, though... > There are certainly times when component level repair make financial > sense (even when you consider the time taken to replace the > component), > and is also the fastest way to get the machine working again. I cannot think of too many cases (at least in our current machine room - or indeed anywhere else I have been) where a repair is better for either the customer or the repairer. If I look at the routers and switches in our racks, the PSUs swap out, the fan tray swaps out and all of the cards swap out. The backplane and switching fabrics are a little harder - but not much. Replacing a card is the work of moments and will be much cheaper for the customer (in terms of down time) and the supplier (in terms of the amount of training needed by the FE). Even five to ten years ago (the times of the VAX 4000 and VAX 6000) I expect that the same economics would have applied. In fact, I believe that the machines were designed to keep MTTR low (and MTBF high !). You would have to go back to the early eighties, the days of the VAX-11/7xx and the VAX 86xx, to find FEs fixing components on site. In those days machines cost a great deal more and people (even highly trained people) cost a great deal less. Now once the card has been pulled and returned to base, then it is probably worthwhile having a repair line where someone with the appropriate skills can find the fault and fix it. Obviously if it costs more to do this than it does to simply use brand new boards as swap-ins, then even this repair won't be done. This is not to say that I won't fix the washing machine or the TV myself once they go out of waranty (but even there it was cheaper to get a new drain pump than try to repair the broken one!) > No, what worries me is that people are not being taught about > component-level design and repair any more (design and repair > are not the same thing, of course). I too am concerned about that sort of dumbing down. At least in those courses where it is appropriate. OTOH it seems perfectly reasonable to me that *most* people could care less about how their computer works - after all most people seem to be that way about their TV, car, DVD etc. I, for one, do not particularly enjoy plumbing, for example. > > replacement modules. People like Tony are few and far between. > > Probably because very few employers want people like me.... Economics again. Employers only need one of you for every N field service engineers. Your kind of skills cost money ... and if they don't you aren't doing the rest of us any favours - stop it :-) Antonio

24 years, 8 months

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