test-drb October 2003

test-drb@ccmp.vtda.org

252 participants
500 discussions

How do _you_ move equipment? What "tools" do you use?

by Innfogra＠aol.com

> > I believe I'll probably put together a pair of sturdy oak ramps, maybe > > 12" wide, that hook to the bumper of the truck. Then I'll use a winch to > > pull the IBM up the incline - although I'm not sure yet what to use under > > the lower end to stop it grating on the ground once its picked up off its > > casters... Perhaps a skateboard? :) > Your oak ramp is a good idea Use a large sheet of aluminum or steel about 3 foot by 3 foot. Larger is better and stainless steel is better than aluminum. The cabinet will actually skid on the metal until the casters take over going up the ramp. The plate might try to kick out so be careful, particularly if it is too small. If you are going to make a ramp bevel the ends of the boards or put some wedges at the end so the metal doesn't deform. You want a smooth skid surface. Be especially careful of your center of gravity on the incline. Good luck, Paxton Astoria, OR

20 years, 9 months

Tektronix 4209 graphic terminal commands summary

by mmcfadden＠cmh.edu

I have just received a Tektronix 4209 terminal which works. Manufacture date is 1987. I vaguely remember plot commands for a tektronix system when I worked for AT&T Western Electric in 1980's. These were not the 4014 storage tube stroke vector displays but the first raster displays. Does anybody have a Plot-10 command summary? Is this the correct set? mike m m c f a d d e n a t c m h . e d u

20 years, 9 months

website update

by pete＠dunnington.u-net.com

I know some of you have bookmarked or made links to one or two files I have on my "website". Earlier today I moved some of the PDP11-related files, such as the Q-Bus diagrams and XXDP docs, into a subdirectory, so you might want to update bookmarks/links. http://www.dunnington.u-net.com/public/PDP-11/ -- Pete Peter Turnbull Network Manager University of York

20 years, 9 months

Emulation moment of insanity... (fwd)

by geneb＠deltasoft.com

This is just.....insane. :) g. ---------- Forwarded message ---------- Date: Mon, 20 Oct 2003 14:58:18 -0700 From: Jeff Vavasour <vavasour(a)shaw.ca> To: trs80(a)cs.ubc.ca Subject: Emulation moment of insanity... Well, for those on this list that are interested, I recently had a moment of insanity in the emulation realm. Here's the result: http://www.vavasour.ca/jeff/mice.html - Jeff

20 years, 9 months

Nice Apple ///

by toresbe＠ifi.uio.no

And I quote horrified: "I now feel the desire to make the room more useful so the computer does not fit the decor any longer." Don't you know that Apples, like black, go with everything?!? :) Sheesh. <g> -Tore

20 years, 9 months

sticky Sony 3.5" drive

by vp＠mcs.drexel.edu

The following article although not written by Tony is still detailed and informative: http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/articles.cgi?read=78 **vp

20 years, 9 months

Teledisk software to duplicate license floppy disk

by kyrrin＠bluefeathertech.com

I don't, Zhu, I'm sorry. However, please don't rule out the possibility of the OS or floppy drive being at fault. Teledisk should, ideally, be run under a strict DOS 6.22 environment, as that is what it was written to support. I've found, through direct experience, that it will run in a command window under Windows NT 4.0, but you may have different results. The other possibility is that the disk you're trying to archive has a format scheme that is so alien to PC-type floppy controllers that it simply cannot be read. Perhaps someone more experienced with floppy archiving than I am can comment on this. *********** REPLY SEPARATOR *********** On 20-Oct-03 at 14:47 Zhu Jin Yong wrote: >hi, > Just searched yahoo and found your email about teledisk tools.I also >encounted the same problems with errors such as "Drive A: is not ready. >Please correct and press any key to continue" especially when floppy >disk is running at final way. I just took out of this disk but this disk >can be nomally used even it got errors in process of td0 file creation. > > But recently,I got a problem using teledisk.Teledisk can't >colon(duplicate) Some authorization disk such as Siemens Simatic Step 7 >V5.1 SP4 authorization disk into *.td0 file with "Drive A: is not >ready" erors at starting up.Do you know any other software could copy >this authorization disk so that I don't warry about my authorization >disk crash? > Thanks, >Zhu -=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com ARS KC7GR (Formerly WD6EOS) since 12-77 -- kyrrin(a)bluefeathertech.com "Quando Omni Flunkus Moritati" (Red Green, aka Steve Smith)

20 years, 9 months

upcoming classiccmp wierdness

by chrisc＠addpower.com

My boxes have borrowed their names from Bloom County...there's opus and bill connected to the network, and milo (my vax) which is currently not connected to anything besides my terminal emulation program. Philip Pemberton <philpem(a)dsl.pipex. To: cctalk(a)classiccmp.org com> cc: Sent by: Subject: RE: upcoming classiccmp wierdness cctech-bounces@clas siccmp.org 10/17/2003 01:11 PM Please respond to "General Discussion: On-Topic Posts Only" In message <69DBC74E5784D6119BEA0090271EB8E5FA3EB2@MAIL10> "Cini, Richard" <RCini(a)congressfinancial.com> wrote: > And of course there should be an "Uncle Donald" around there somewhere : -) Well, seeing as we're on the subject of machine names, I've been using star names, constellations and Zodiac signs - Polaris, Arcturus, Vega, Rigel, Coriolis and Aquarius have all been used so far. The laptops are named after Star Trek movies and series - Nemesis and Voyager. As for the machines that sit there doing nothing 99% of the time? IJSH and IJST. Guess what IJST and IJSH mean :) I'd be interested to find out what network names/nicknames some other classiccmpers have given their machines. Later. -- Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB, philpem(a)dsl.pipex.com | ViewFinder, Ethernet (Acorn AEH62), http://www.philpem.dsl.pipex.com/ | 8xCD, framegrabber, Teletext * <- Tribble # <- Tribble after Borg assimilation

20 years, 9 months

sticky Sony 3.5" drive

by fmc＠reanimators.org

Found in an HP 9114A. Doesn't want to accept a diskette; it doesn't move the diskette down when fully inserted, but pushing the eject button ejects the diskette. Removed the drive from the 9114A, and pulled its cover; its heads appear to be intact and in place. I'm wondering what I need to clean and re-lubricate (and how, and what sort of lubricant to use); I'm thinking Tony Duell has told us all before but doggone if I can turn it up in my searches. -Frank McConnell

20 years, 9 months

ASR33 Teletype interfacing

by tomj＠wps.com

> Date: Sat, 11 Oct 2003 09:04:11 -0400 > From: Ian Primus <ian_primus(a)yahoo.com> > Subject: Re: ASR33 Teletype interfacing > >> I have been attempting to get my ASR33 teletype connected to something > >> and communicating, but so far I have not been successful. I have built > > Teletypes are inductive loads. Though they only want 20 mils, the > > voltage needs to be high to get the initial magnet pull-in (basic RL > > theory). ASR33 loops were generally run at 100V or so, but I run my > > Model 28 at 14V, with non-perfect error rate, and I don't use the > > keyboard. > > I take it that the voltage isn't that crucial, just the current? Yes, but higher voltage means the in-rush current will reach 20mA faster (the RL time constant doesn't change, just absolute values).(I kinda lied when I said it wasn't subtle; there are subtleties. But they're not of the pee-cee interface kind. The Old Guys who worked all this stuff up were as smart or smarter than us; it's best to read old source material for this kind of trivia.) > > The keyboard and printer are IN SERIES. If you hit keys while it's > > printing you foul it up. Normal. > > What about on a full duplex machine? Is it the same, or are they > separate? Yes, but most teletype equip was half-duplex (two wires). > > I've done one of these fairly recently, and if poked with a > > not-too-sharp stick, I'll scan the schematic and pu on my website. > > *poke* > > <grin> > > If it's not too much trouble, I'd like to see it. From what I have > heard, there are lots of ways to do this, and i would be very > interested to see how you did it. OK, I'll get to it this week and post URL here. Everyone's interface is better than everyone else's, mine included :-) Be skeptical. Simplest isn't always most reliable, it depends on what you're trying to do: punch 1000 feet of error-free tape a mile away? Or just make the tty dance for an afternoon of fun? I cobbled up a PIC-based board that does ITA2 (aks "baudot") to ASCII, motor control, etc for a Model 28 teletype. It fits a particular project of my own. The source for it is at http://wps.com/projects scroll down for "PIC BASED PROJECTS" or something. tomj

20 years, 9 months

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test-drb October 2003