test-drb September 2000

test-drb@ccmp.vtda.org

156 participants
405 discussions

by geoff＠pkworks.com

>DON'T EVER GO INSIDE A RUNNING OR RECENTLY POWERED OFF >MONITOR OR TV WITH A CRT UNLESS YOU KNOW WHAT YOU'RE DOING. Just how recently would recently be? That, frankly, is a matter of dispute. The *correct* answer is to know how to discharge the anode voltage, have the appropriate tools to do so and to measure the result to confirm success, and to perform the procedures properly. (Hint: If you don't know how, find somebody who does.) The service manual from whatever CRT-based device you're messing with should have proper instructions. And if you don't have the service manual, what in heck are you doing in there anyway? Thanks, Tom Applefritter www.applefritter.com

24 years, 3 months

[OT^2] Re: Our fine educational system (was: Login on VMS)

by dhquebbeman＠theestopinalgroup.com

> > I think I managed to hit 100+MPH on a few occasions. > > > > WHEEEEEEE!! > > I thought all Americans drove at no more than the 50? limit ;-) Speed limit on most U.S. Interstate highways is 65mph... urban areas typically mandate a lower speed limit, we have a section of Interstate locally known as Dead Man's Curve that mandates a 35mph speed limit for semi tractor-trailer rigs, and another section called Hospital Curve where the limit is 50mph for both trucks and cars (and I won't even get into describing our local section known as Spaghetti Junction). Montana? and/or North Dakota flirted with no limits outside ruban areas (actually the law specified that speeds must be reasonable and prudent for the conditions or something like that), but they maye have finally done away with that due to lobbying by insurance company interests. -dq

24 years, 3 months

Trash or Treasure?

by mcguire＠neurotica.com

Sounds like a control computer for a GenRad automated pc-board testing system. They used various pdp11 machines to run their board testing machines. I'd say it's a pretty nice score. -Dave McGuire On September 22, Joe wrote: > A couple of weeks ago I found a box in a scrap yard with a half height 8" > floppy drive it in. The box was marked "Gen-Rad" and looked like part of a > old piece of test equipment. I picked up the box just for the floppy drive > and brought it home. Today I started to take it apart and found that it was > made by Scientific Micro Systems and has a number of DEC cards in it as > well as a Maxtor XT-1085 hard drive. My question is what is it and weather > it's worth keeping or is it just good for parts? > > Here's the details; It's marked "Gen Rad 2295 Central Station" on the > front. The back is marked "Scientific Micro Systems" "model MDX01170". > It's about 9" w x 11" h x 17" deep. On the back it has eight DB-25m ports > on the back. They're marked "TZ0" through "TZ3", "LP0" and "TT0" through > "TT2". Inside it has a DEC M7957 quad board, a half size board made by > Sigma Information Systems Inc (connected to the TT* and LP0 ports), a half > size "Q RAM 11" board made by Clear Point (memory?), a DEC M 8186 half size > card, and a half size SMS card (1002001-0001/0004220-0001) that is also > connected via a jumper to the last card, a full quad size SMS card > (1001939-0001/0003770-0001). The last card has ribbon cables that connect > to the floppy and hard drive. > > Does anyone know what it is? Is it worth anything? FWIW I haven't tried > to connect a terminal to it yet but it appears to power up and boot. > > Joe

24 years, 3 months

VT100 series video terminal technical manual

by lemay＠cs.umn.edu

Does someone have a scanner with a sheet feeder attachment, and also have the desire to scan in the "VT100 series video terminal technical manual"? Its about 1.5 inches thick, all 3 hole punched pages. I assume others would find this manual worth downloading. -Lawrence LeMay lemay(a)cs.umn.edu

24 years, 3 months

VAX VMS TCP/IP bug? w/ Telnet

by cmcmanis＠mcmanis.com

Is there some known bug with the TCP/IP implementation of telnet in the DEC version of TCP/IP ? I installed a fairly recent version of TCP/IP on my 10 year old VAX and when I telnet to it the VAX is driven to its knees and the hub goes wild. Doing a trace on the packets reveals zillions of 10:56:25.213012 unix.1714 > vax.telnet: P 36303:36314(11) ack 20085 win 17520 (DF) [tos 0x10] 10:56:25.216076 vax.telnet > unix.1714: P 20085:20091(6) ack 36314 win 4369 10:56:25.216856 unix.1714 > vax.telnet: P 36314:36325(11) ack 20091 win 17520 (DF) [tos 0x10] 10:56:25.219984 vax.telnet > unix.1714: P 20091:20097(6) ack 36325 win 4369 10:56:25.220726 unix.1714 > vax.telnet: P 36325:36336(11) ack 20097 win 17520 (DF) [tos 0x10] As you can see from the trace a couple of things are strange. Why are the windows screwed up? Why are the TOS bits set? Very confusing. --Chuck

24 years, 3 months

RK05 transport tips ?

by djg＠drs-esg.com

>From: "jos.mar" <jos.mar(a)bluewin.ch> > >Hello list, > >I might be getting some of the Davos' PDP8 stuff that Megan >mentioned on the list . >The 19 " racks will have to be transported flat, i.e. on their side. >Any tips on how to handle the RK05, RL01 and RL02 ? >Is there some sort of locking mechanism on the R/W heads ? >I sure would hate ruining a I/O devices that I will not easilly find again... > >From alt.sys.pdp8 thread http://x76.deja.com/getdoc.xp?AN=668383000&CONTEXT=969718419.890961925&hitn… You can see the RK05 head lock at the top of the round positioner housing above the black fan in this picture. It is the golden L bracket with one hex head bolt through it. I don't have a RL0x so can't comment on it. http://www.pdp8.net/rk05/pics/topright.shtml or http://www.pdp8.net/rk05/pics/topright.shtml?large for a big picture which it is more visible in. The drive has a cover with a bunch of quarter turn fasteners which I don't seem to have in any of the picture online. When I moved a rack flat I removed everything up high or heavy in it to get it managable to tip into the truck. After you start tipping is not the time to figure out that its still too heavy to control. A RK05 is 110 lbs David Gesswein http://www.pdp8.net/ -- Old computers with blinkenlights

24 years, 3 months

cloning VMS installs?

by ajp166＠bellatlantic.net

From: Chuck McManis <cmcmanis(a)mcmanis.com> >Hi everyone, I'm trying to do fairly complete VMS installs on several >machines before Saturday and I was wondering if there was a better way. >Specifically, is it possible to create a standalone backup of a freshly >installed system and then restore that on several machines ? (I realize >that you have to replace the VAX-VMS license but other than that, and >changing the SCSNODE and SCSSYSTEMID is that all that is necessary? > Go for it, saves time. Use STABACKIT to clone the drive afer install but minimal confiuration. I've done it with fully configured drives as well. Allison

24 years, 3 months

VCF Madness!

by vcf＠siconic.com

Well, I'm rushing about as always before the big weekend getting everything ready. I'm more prepared than ever this time around so everything should go smoothly. I look forward to seeing everyone from the list who's coming to VCF. This is going to be a great weekend! Sellam International Man of Intrigue and Danger ------------------------------------------------------------------------------- Looking for a six in a pile of nines... VCF 4.0 is September 30-October 1 San Jose Convention Center, San Jose, California See http://www.vintage.org for details!

24 years, 3 months

Got my PDP-11/34! Now what?

by xds_sigma7＠hotmail.com

Well, here's an unpleasant fact... the troubleshooting part of the 11/34A maintenance card suggests "bad KY11-LB" if the run light is lit and there is nothing on the console.. Just in case you don't have the connections right on the M9312, here they are: the black wire from the console goes to TP4, the red wire goes to TP1, and the other wire goes to TP3. FYI, the KY11-LB is the front panel with switches, the KY11-LA is the one without... Will J _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.

24 years, 3 months

VT320 connector

by pete＠dunnington.u-net.com

On Sep 29, 9:31, Adrian Graham wrote: > They're both true :) The MMJ (jack) is what you plug an MMP (plug) into! > > From: ard(a)p850ug1.demon.co.uk [mailto:ard@p850ug1.demon.co.uk] > > > The connector is the 6-pin MMP (Moulded Modular Plug ISTR) > > which normally > > > > I've always called them MMJs (Modified Modular Jack IIRC). > > Does anyone > > know which of us (if either) is nearer the truth? Well, FWIW, AMP (who invented them) refer to them as MMJs or MMJ plugs :-) Logically, of course, a jack is the socket and a plug is, well, ... -- Pete Peter Turnbull Dept. of Computer Science University of York

24 years, 3 months

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test-drb September 2000