test-drb October 2001

test-drb@ccmp.vtda.org

259 participants
770 discussions

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 > >

23 years, 7 months

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 > ----------------------------------------------

23 years, 7 months

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

23 years, 7 months

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/ /************************************************************/

23 years, 7 months

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/

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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>

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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!

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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

23 years, 7 months

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test-drb October 2001