test-drb April 2005

test-drb@ccmp.vtda.org

269 participants
730 discussions

by msokolov＠ivan.Harhan.ORG

woodelf <bfranchuk at jetnet.ab.ca> wrote: > Hmm My still is displaying March ... I think I'll change it tomorow and > skip the 1st :) Seems like a good strategy. :-) At least for those like me who hate April Fool's Day with passion. > PS ... I favor 13 months and a yearly leap day. So how would you deal with the fact that a tropical year will *never* divide evenly into days no matter how you twist and turn it? In my calendar I've addressed this problem at its root: instead of starting with the day as the basic unit and trying to pack days into years like other calendars do (doomed to failure because of the above), I start with the year as the basic unit (actual astronomically determined tropical years starting at Ostara, the vernal equinox), divide the year into dates mathematically (without regard to actual solar days), and then *map* days to dates as a separate function. MS

19 years, 8 months

OT: Sheet metal and UNF screws (was Re: PET and the IEEE-488 interface)

by pete＠dunnington.u-net.com

On Apr 1 2005, 19:33, Philip Pemberton wrote: > Shame it's so hard to find #4 copper wire (then again I'm > probably not looking in the right place). The thickest I've found is 2.5mm > solid core copper. It may depend on what you're asking for. What do you mean by "#4 copper wire"? 4SWG, which is just under 1/4" diameter? 4AWG, which is somewhat slimmer? That might be "wire" to the company that runs the mill that makes it[1], but it would be "copper rod" to most of the rest of us. Try a model engineering supplier. Or do you mean insulated cable? That would have a cross-sectional area of between 21mm^2 and 28mm^2, depending on whose wire gauge you used, and would have a current capacity of something like 150 amps, continuous, in an enclosed space (like a conduit). Almost double that in free air, more for intermittent use. Try a welding supplier, and ask for the cable used for earth clamps, or buy a cheap pair of jump leads. Or do what I did, and twist 3 or 4 thinner cables together. I have a cable that will run about 350A-400A, good for a fairly decent spot welder. [1] I once got some 3/8" square silver steel from the local wire works. They called *that* wire, too. -- Pete Peter Turnbull Network Manager University of York

19 years, 8 months

Original Apple 1 FS

by dwight.elvey＠amd.com

Apr 1, 2005 > > From a friend of mine to the LEM Swap list: > >From: Kyle Hansen <pixie at speakeasy.net> >Date: Fri Apr 1, 2005 1:36:58 AM US/Pacific >To: "LEM Swap List" <lem-swap at mail.maclaunch.com> >Subject: [swap] FS. Original Apple One > >LEM-Swap is for buying & selling Mac stuff. It is not a discussion list. > >See the FAQ <http://lowendmac.com/lists/swap.html> for guidelines on >postings, feedback, and dispute resolution. >-------------------- >Here are the specs. The case is made out of wood and I can't find a >mouse >for it. I originally paid $666 for it so I am hoping to get my money >back. > >CPU: MOS Technology 6502 >CPU Speed: 1 MHz >FPU: none >Bus Speed: 1 MHz >Data Path: 8 bit >Onboard RAM: 8 kB >Maximum RAM: 32 kB >VRAM: 1 kB >Maximum Resolution: 60.05 Hz, 40x24 char >Power: 58 Watts > >It doesn't offer much in the way of upgrade capabilities. I think that >you >can install OS 10.3 on it using a utility from Ryan Rempel but you have >to >find a CD drive first. > >Best offer takes it. Shipping from 94501. > >Kyle Hansen > >The first lemming to lead his peers off the cliff is a bold and >decisive leader. > >

19 years, 8 months

D.G. Nova update -- crapacitors strike again

by dwight.elvey＠amd.com

>From: "Jules Richardson" <julesrichardsonuk at yahoo.co.uk> > >On Fri, 2005-04-01 at 00:32 -0800, Tom Jennings wrote: >> Well I identified the failure, fixed it, and the disk pack is >> formatting right now. Whew! >> >> Another crapacitor -- looks like a tantalum, but it's only .01uF, >> a dipped-looking bright blue axial part, about the size of a 1/8W >> resistor. I think these were discussed recently; not necessarily >> tants, but some short-lived process. > >That's one thing that bugs me about old kit for which there aren't >schematics around - tantalum caps often completely explode. If the value >was critical for some reason, then that creates a problem! > >I've started taking lots of photos of any rare boards I have these days, >just in case. Once a cap explodes or a resistor burns out it might be >impossible to tell what the right part should be (well, without serious >circuit analysis and/or guesswork) > Hi One thing to consider is that critical valued passive parts rarely are in a position that will cause them to burn when shorted. Still, most IC's are across the rails. I've seen IC's with a crater right where the part number was. Dwight

19 years, 8 months

Old Computer Rescue?

by dvcorbin＠optonline.net

----- Original Message ----- From: Marvin Johnston <marvin at rain.org> Date: Friday, April 1, 2005 12:45 pm Subject: Old Computer Rescue? > > In searching for radio gear, I ran across this URL and thought it > mightof some interest here. I don't recognize it, but it looks > like it might > be some older computer stuff. > > http://www.geocities.com/heftyharry/OLD_COMPUTER_SALE.html > >From the Site: >>The typwriter was bolted to a desk, which didn't work, so that went to the >>dump already, also all the boxes of books and boxes of paper strip are in the >>driveway, OK to come get those or I will haul them away. AAARGH..........[Is this cause for justified homicide?]

19 years, 8 months

searching for a set of RL02 slides

by msokolov＠ivan.Harhan.ORG

Cameron Kaiser <spectre at floodgap.com> wrote: > This may be a subtle point, but it's the day, not the date, I'm referring to. But there is absolutely nothing special about the day. The "April Fool's Day" semantics result only from the Gregorian calendar mapping this day to the April 1 date, and are applicable only to those using the Gregorian calendar. BTW I have always hated "April Fool's Day" with passion. But now I can breathe a sigh of relief since the new calendar I use has NO April 1. MS

19 years, 8 months

searching for a set of RL02 slides

by msokolov＠ivan.Harhan.ORG

Cameron Kaiser <spectre at floodgap.com> wrote: > You realize today *is* April 1st, right? Only for those who live on the Gregorian calendar. I live my life on the Republic of Terra calendar instead: http://ivan.Harhan.ORG/RT/calendar/spec.txt Today is SE 44 Nis 12 (Space Era year 44 month Nisannu day 12). MS (The RT calendar won't be supported in 4.3BSD-Quasijarus, though, only in 4.5BSD-Quasijarus along with extension of time_t to 64 bits.)

19 years, 8 months

searching for a set of RL02 slides

by msokolov＠ivan.Harhan.ORG

Cameron Kaiser <spectre at floodgap.com> wrote: > Like I said, today *is* April 1st. ^^ For you it is, for me it isn't. Your calendar says April 1, 2005, mine says Nisannu 12 of SE 44. MS

19 years, 8 months

More vintage in the mainstream news....

by dvcorbin＠optonline.net

> > Sellam - you think there's only a dozen PDP-8 in the world? > No I am not Sellam (and we are all grateful for that)....but I figured I would chime in... If he is talking about operational, complete, "straight-8" machines, he is probably on the right order of magnitude. Remember almost all of the ones you see are /S/ E /L /I /A /M models....

19 years, 8 months

breaking into an RSX-11M Plus 3.0 system

by dvcorbin＠optonline.net

> I don't have the password for an RSX11 install I have on a used RD53. > Anybody know the sequence? Is there something like on VMS where > you give a bootpart to be able to interrupt startup and use an > altauth ? > regards, > heinz IIRC [I worked alot more on 11-M than on M-Plus... and it was over 15 years ago...]..... While the startup script is running you should be ablse to press Ctrl-C to abort it. If the sys manager did not put in good error handlers, it will leave you at an MCR prompt....A cleaner alternative is to enter Ctrl-Z when prompted for the date and time during startup....RMMV David

19 years, 8 months

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test-drb April 2005