test-drb

test-drb@ccmp.vtda.org

101090 discussions

by dquebbeman＠acm.org

> > > My computer's heavier than yours. > > new sig: My computer's got more blinking lights than yours. > My computer's slower than yours. My computer dims the neighborhood's lights when I turn it on... My computer has fewer transistors than yours... My computer has no transistors, just tubes... My computer's valves burn out faster than yours... My computer's got more gears than yours...

23 years, 3 months

TTL computing

by IVIE＠cc.usu.edu

Dwight Elvey said: > Looking at ideas for a minimal computer, did you see: > > http://www.tu-harburg.de/~setb0209/cpu/ http://eagle.eku.edu/faculty/styer/oisc.html has a description of a bunch of single-instruction machines. Take a look at the ones which require only byte moves and a memory-mapped program counter. Roger Ivie ivie(a)cc.usu.edu

23 years, 3 months

One-upsmanship (was: Secret Mac

by dwightk.elvey＠amd.com

>From: "Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> > >> > My computer's heavier than yours. >> new sig: My computer's got more blinking lights than yours. >My computer's slower than yours. > > Mine's a 4004. What do you use that is slower ( just because it runs windows doesn't mean the processor is slower). Dwight

23 years, 3 months

More 11/750 PSU Qs

by dwightk.elvey＠amd.com

>X-Server-Uuid: 1b77f47c-118c-11d5-bbc5-0002a5132c3d >X-Authentication-Warning: ns2.ezwind.net: majordom set sender to owner-classiccmp(a)classiccmp.org using -f >Date: Wed, 17 Apr 2002 09:45:56 -0700 >From: cdl(a)proxima.ucsd.edu >To: classiccmp(a)classiccmp.org >Subject: Re: More 11/750 PSU Qs >MIME-Version: 1.0 >X-WSS-ID: 10A36FAD144315-01-02 >Content-Transfer-Encoding: 7bit > >> From: ard(a)p850ug1.demon.co.uk (Tony Duell) >> Subject: Re: More 11/750 PSU Qs >> To: classiccmp(a)classiccmp.org >> Date: Tue, 16 Apr 2002 03:01:23 +0100 (BST) >> In-Reply-To: <20020415200927.52402.qmail(a)web10301.mail.yahoo.com> from "Ethan Dicks" at Apr 15, 2 01:09:27 pm >> Sender: owner-classiccmp(a)classiccmp.org >> Reply-To: classiccmp(a)classiccmp.org >> >> > > > > NO!. SMPSUs do not like being run in parallel (unless designed to be >> > > > > used like that). One PSU will end up attempting to supply all the >> > > > > current and the other PSUs may not like having voltages applied to >> > > > > their outputs. >> > > > >> > > > And once the first one drops dead, the next >> > > > most "powerful" one repeats the process. >> > > > Proof by "induction" left as an exercise :-) >> > > > >> > > *giggle* OK, ok, thought it was best to ask.... *laughs manically* >> > >> > Presumably, if one could a) tolerate the voltage drops and b) find massive >> > diodes (many amps for the intended application in an 11/750), it could be >> > done safely. Please feel free to correct me if I'm wrong. >> >> Well, that would prevent one PSU from supplying a voltage to the outputs >> of another (something that can really confuse the regulation circuitry!), >> but it won't help with the current distribution problem. The PSU who's >> output after the diode drop is the highest voltage will end up sourcing >> all the current. Not what you really want. > >Aren't there some power supplies that can be run in constant-current >or "current-limited" mode? I think I used to do that with a PDP8-E, >when the power drain of the add-in boards exceeded the original 1/2 Amp >per slot. A booster supply to provide more current. > > carl >-- > carl lowenstein marine physical lab u.c. san diego > clowenstein(a)ucsd.edu > Hi Carl Sure, I've use supplies that are designed to be used in parallel that would share current rather than having each supply run in current limit mode. They were set up in such a way that the voltage feedback was controlled by a master supply. The slave supplies were set to track to the voltage on the current sense resistor of the master supply only they took their feedback form input of their own current sense resistor. Only the master supply had voltage feedback from the load. Most supplies that have a high side current sense resistor can be modified to run this way. When the masters current went up, it would create a higher voltage on the sense resistor. This would cause the slaves to increase their voltage on their sense resitor, evening out the shared current. Dwight

23 years, 3 months

Champaign trip (aka DEC Galore)

by csmith＠amdocs.com

> -----Original Message----- > From: pat(a)cart-server.purdueriots.com > On Wed, 17 Apr 2002, Christopher Smith wrote: > > > > -----Original Message----- > > > From: Doc [mailto:doc@mdrconsult.com] > You also need to add your connecting hosts to your /etc/X11/Xaccess > (or is it /etc/X11/xdm/Xaccess ?) config file, eg: a single "*" on the > command line will allow any host to connect. Did that too, but I will recheck it. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 3 months

One-upsmanship (was: Secret Mac

by DAW＠yalepress3.unipress.yale.edu

> From: Fred Cisin (XenoSoft) > > > > My computer's heavier than yours. > > new sig: My computer's got more blinking lights than yours. > My computer's slower than yours. > My computer is uglier than yours... Oop, hey, wait a minute... -- --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818 Mac OS X 10.1.2 - Darwin Kernel Version 5.2: Fri Dec 7 21:39:35 PST 2001 Running since 01/22/2002 without a crash

23 years, 3 months

TTL computing

by dwightk.elvey＠amd.com

HI Tony Looking at ideas for a minimal computer, did you see: http://www.tu-harburg.de/~setb0209/cpu/ I've just subscribed again to the list so I'm not sure if this pointer has come up on this thread. Dwight PS Tony: I tried sending you a message directly but I'm not sure it made it, on another subject.

23 years, 3 months

Assorted goodies & TK Question

by cdl＠proxima.ucsd.edu

> Date: Mon, 15 Apr 2002 22:51:16 -0500 (EST) > From: <pat(a)cart-server.purdueriots.com> > X-X-Sender: <pat(a)cart-server.ecn.purdue.edu> > To: <classiccmp(a)classiccmp.org> > Subject: Re: Assorted goodies & TK Question > In-Reply-To: <200204160322.g3G3Mx621685(a)shell1.aracnet.com> > Sender: owner-classiccmp(a)classiccmp.org > Reply-To: classiccmp(a)classiccmp.org > > On Mon, 15 Apr 2002, Zane H. Healy wrote: > > > > > Also, how do I get the disk out of an RRD40 without a computer attached? > > > > Um, unless you've got the 'clear sleave', I don't think you're going to get > > the disk out without demolishing the drive! As long as that's the drive I'm > > thinking of it uses a funky 'pincer' holder for the CD, with a clear > > 'sleave' around it to make up the 'caddy'. You stick the caddy in the drive > > and pull the 'sleave' back out. To remove the CD, you stick the 'sleave' in > > and pull out the whole caddy. (hopefully that makes sense) > > How easy is it to take apart without killing the drive? Or can I make a > 'clear sleve' very easily out of a couple of pieces of plastic? > The peculiar caddy comes from Philips, and was also used in some videodisk players. My local Gateway Electronics store has a lot of junk related to the Philips players, including a bunch of caddies. Or at least they had them last time I was there, perhaps a month ago. Maybe there is some similar store near where you are. carl -- carl lowenstein marine physical lab u.c. san diego clowenstein(a)ucsd.edu

23 years, 3 months

Champaign trip (aka DEC Galore)

by csmith＠amdocs.com

> -----Original Message----- > From: Doc [mailto:doc@mdrconsult.com] > Silly question, but did you restart gdm? > Every ime I've set up remote desktops on a GDM server, It > Just Worked. Yes, lots ;) Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 3 months

More 11/750 PSU Qs

by cdl＠proxima.ucsd.edu

> From: ard(a)p850ug1.demon.co.uk (Tony Duell) > Subject: Re: More 11/750 PSU Qs > To: classiccmp(a)classiccmp.org > Date: Tue, 16 Apr 2002 03:01:23 +0100 (BST) > In-Reply-To: <20020415200927.52402.qmail(a)web10301.mail.yahoo.com> from "Ethan Dicks" at Apr 15, 2 01:09:27 pm > Sender: owner-classiccmp(a)classiccmp.org > Reply-To: classiccmp(a)classiccmp.org > > > > > > NO!. SMPSUs do not like being run in parallel (unless designed to be > > > > > used like that). One PSU will end up attempting to supply all the > > > > > current and the other PSUs may not like having voltages applied to > > > > > their outputs. > > > > > > > > And once the first one drops dead, the next > > > > most "powerful" one repeats the process. > > > > Proof by "induction" left as an exercise :-) > > > > > > > *giggle* OK, ok, thought it was best to ask.... *laughs manically* > > > > Presumably, if one could a) tolerate the voltage drops and b) find massive > > diodes (many amps for the intended application in an 11/750), it could be > > done safely. Please feel free to correct me if I'm wrong. > > Well, that would prevent one PSU from supplying a voltage to the outputs > of another (something that can really confuse the regulation circuitry!), > but it won't help with the current distribution problem. The PSU who's > output after the diode drop is the highest voltage will end up sourcing > all the current. Not what you really want. Aren't there some power supplies that can be run in constant-current or "current-limited" mode? I think I used to do that with a PDP8-E, when the power drain of the add-in boards exceeded the original 1/2 Amp per slot. A booster supply to provide more current. carl -- carl lowenstein marine physical lab u.c. san diego clowenstein(a)ucsd.edu

23 years, 3 months

Champaign trip (aka DEC Galore)

by csmith＠amdocs.com

> -----Original Message----- > From: Doc [mailto:doc@mdrconsult.com] > [xdmcp] > Enable=1 Did that -- no dice. I haven't gotten much further. I hear that you can put a Port=177 (is that the number?) in there to make sure it uses the right port, and I haven't done that yet. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 3 months

It's alive!

by vcf＠siconic.com

We've managed to get the Apple-1 being auctioned working. We can enter commands into the monitor and get expected responses. We're going to get a cassette drive hooked up to it and attempt to load BASIC next. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 3 months

OT Letting it go (was Re: The CommodoreOne is near!)

by mcguire＠neurotica.com

On April 17, Christopher Smith wrote: > > That's because we want to be *right.* It took me a long time > > to learn that > > I'd rather be happy than right. > > I'd rather be corrected than right. ;) No matter how much it > bruises the ego, it generally saves lots of time and energy > later. And you can learn something in the process! -Dave -- Dave McGuire "Mmmm. Big." St. Petersburg, FL -Den

23 years, 3 months

NeXTStation: How to fix NetInfo

by csmith＠amdocs.com

Ok, R. -- chime in here any time ;) Now that I can see the NeXTStation's display better, I've booted it again, and changed the local password with 'passwd'. That got me in again. It seems that some netinfo stuff is dying on bootup. Lots of the NeXTAdmin apps will complain about not being able to contact the NetInfo server and die. The NetInfo server, as far as I can tell is nibindd, is that right? What is lookupd? It starts right after it, and seems to possibly have something to do with NetInfo too, but I can't tell what. Anyway, lookupd likes to exit without doing much, and nibindd seems to be dumping core, which I assume isn't good at all ;) ... so how does one go about straightening this mess out? Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 3 months

Emulex MD21

by dquebbeman＠acm.org

> Rats, I wanted to use an Emulex MD21 from a Sun external SXSI box to hook my > PDP11s Fuji M2246E ESDI drive (that connects to the QBUS via an Emulex QD21) > upto a PC to do an image dump. > > The MD21 works OK with a Sun drive (a Micropolis model 1558) & the PC can > verify each block on that, but with the Fuji M2246E hooked up, I get > "unexpected SCSI command failure" from the Adaptec AHA1540CF BIOS when trying > to verify the disk - > host adapter status : 00h - no host adaptor error > target status : 02h - check condition > sense key : 02h - not ready > +sense code : : 22h > +sense code qualifier : 00h > > mean anything to anyone? The Fuji 2246E is working happily in the PDP11/83 so > I don't believe the drive is faulty (yet!) > > I noticed the MS21 announce itself to the SCSI controller as an "Emulex > MD21/S2". I wonder if there is specific Sun firmware in it to talk to > only Sun approved ESDI drives?... Hmmm this sounds a little familiar, I've got a Micropolis drive at home that's got an Emulex rider board, it may be the same setup, although from a Prime, not a Sun... I'll try to go home at lunch and check... -dq

23 years, 3 months

OT Letting it go (was Re: The CommodoreOne is near!)

by csmith＠amdocs.com

> -----Original Message----- > From: Glen Goodwin [mailto:acme_ent@bellsouth.net] > That's because we want to be *right.* It took me a long time > to learn that > I'd rather be happy than right. I'd rather be corrected than right. ;) No matter how much it bruises the ego, it generally saves lots of time and energy later. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 3 months

OT Women & computers (was Re: The CommodoreOne is near!)

by csmith＠amdocs.com

> -----Original Message----- > From: Glen Goodwin [mailto:acme_ent@bellsouth.net] > Woman: Don't give me that crap! Women don't know anything about > computers! > This sort of thing happened almost every day. I don't blame > Deb at all for > leaving the industry. Of course, we're in Florida, so you > have to expect > some redneck attitudes, but from a *woman*?? Well, I guess the whole point of this is that women in general have every bit of ability that men in general have. I suppose that includes the "ability" to be stupid. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 3 months

Explain the NeXTStation "dim monitor" problem, etc...

by csmith＠amdocs.com

> -----Original Message----- > From: ard(a)p850ug1.demon.co.uk [mailto:ard@p850ug1.demon.co.uk] > Look for a pot marked 'screen' or 'g2' or something like > that. It's often > on the flyback transformer in small monitors, could be elsewhere on > larger/high end ones. For the record, it's "white level" on my monitor. :) It's also very hard to get at without a pot tweaker (have to get some of those one day...) > Turning this up might help. The cure might not be permanent > (in fact it > might casuse the CRT to fail sooner), but it's worth a try. We'll see -- it's ok for now. > Do take care when working inside a monitor. There are some nasty high > voltages in there. Although IMHO the CRT electrode voltages are less > likely to kill you than mains (simply because the CRT > electrode supplies > can't source much current), a shock from one of them can be > nasty, and > might cause you to jerk back and cut yourself, or break the CRT, or... Indeed. I know, but thanks for the warning anyway. FWIW, the Megapixel monitors are completely shielded even once you open the plastic. There's a cutout in the shielding for each pot, and looking in with a flashlight, I can't see much of a way to contact anything except the pots. In other words, this is probably pretty safe on one of these. > If you've not been inside a monitor or TV before, then there's a > reasonable set of safety precautions in the sci.electronics.repair FAQ I might look at that anyway. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 3 months

OT email response format (was Re: TTL computing)

by csmith＠amdocs.com

> -----Original Message----- > From: Doc [mailto:doc@mdrconsult.com] > On Tue, 16 Apr 2002, Christopher Smith wrote: > > they really hate for people to put any software on their system > > (typical windows-using mindset, but let's not get into that :), > Umm, I had the misfortune to run a Windows9x network for a couple of > years. 30+ machines and 50+ belligerently clueless > archeologist users. > If I could have stopped those idiots from installing *every* browser > plugin that came along and $3 cut-out software, I'd have had half the > repairs to do. > That _is_ a Windows-admin mindset, borne of much painful experience. I was wondering whether I would get this reply, and I have just one thing to say to it: You're absolutely right. I wouldn't trust people to *breathe* on a windows machine, personally, because windows can't handle it. It was the "windows using" part that I really dislike. The mindset is just a symptom. ;) Now if you'd like to talk about people who think that this is a natural way for a computer to behave, that's something else entirely. Ok, that was at least two things, I guess... Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 3 months

UPS was Re: Need Burroughs Tape Spec's

by Robert_Feldman＠jdedwards.com

Maybe just a matter of terms, but you want a foam that will compress some, but will not _permanently deform_. Some spray foams will compress, but will not rebound, leaving lots of room for parts to rattle around in. Bob -----Original Message----- From: Sridhar the POWERful [mailto:vance@ikickass.org] Sent: Wednesday, April 17, 2002 1:29 AM To: Chad Fernandez Cc: classiccmp(a)classiccmp.org Subject: Re: UPS was Re: Need Burroughs Tape Spec's <snip> Actually, you want noncompressible foam so that it doesn't get compressed, making empty space into which your equipment can fall. The main reason why newspaper is a bad packing material. You want something that will absorb shock *without* compressing. ^^^^^^^^^^^ Peace... Sridhar <snip>

23 years, 3 months

UPS was Re: Need Burroughs Tape Spec's

by ajp166＠bellatlantic.net

UPS... Another data point. We build RTD and RTD based assemblies, One time two probes were shipped to a vendor and we get an RMA request... Seems the probes were BENT. Now to appreciate that you have to understand these were .25" od probes (in a 316L sheath) and that inside a 1"od inconel thermowell (1"od .25" id) and they were BENT. UPS denied any culpability, they also paid. Allison

23 years, 3 months

Explain the NeXTStation "dim monitor" problem, etc...

by ajp166＠bellatlantic.net

From: jpero(a)sympatico.ca <jpero(a)sympatico.ca> >I wondered whom is right? > >cathode oxide or >heater coating? The heater looses emissivity. Also the oxide from ION bombardment and local heating from the electron beam gets burned. In some systems the HV PS tends to fade over time as well! I have a bunch of Acer tubes that did the latter when run at 800x600. Allison

23 years, 3 months

OT Letting it go (was Re: The CommodoreOne is near!)

by dquebbeman＠acm.org

> > From: Christopher Smith <csmith(a)amdocs.com> > > > > From: John Chris Wren [mailto:jcwren@jcwren.com] > > > > > But then, one thing I have noticed about the list, besides being an > > > excellent wealth of information and intelligent people, is that some don't > > > know when to let something end. > > > > You can count me in that category. I wonder whether it's typical > > of the kind of person you'd find on this list? > > > > As a general observation, technical types tend to push things > > further than most people appreciate in several cases. > > That's because we want to be *right.* It took me a long time to learn that > I'd rather be happy than right. They're not the same thing???? ;)

23 years, 3 months

OT Women & computers (was Re: The CommodoreOne is near!)

by acme_ent＠bellsouth.net

> From: John Chris Wren <jcwren(a)jcwren.com> > Jesus. And people wonder why women have a hard time in the industry. No kidding! My wife Debbie created our computer store/repair shop, but she ultimately quit because of the disrespect she received from customers. She has ten years experience with telecommunications gear, and Wintel boxes are not much of a challenge for her. Real conversation: Woman enters the store carrying a PC. Woman: "I need help with my computer. Can he help me?" (Points to me, busy swapping out a hard drive.) Debbie: Well, *he's* busy right now. How may I help you? Woman: I need help with my computer. When will he be available? Debbie: I don't know, but *I* can help you right now. Woman: You don't understand, my computer is broken and I need it fixed. Debbie: I can fix your PC if you will just explain the problem to me. Woman: Don't give me that crap! Women don't know anything about computers! This sort of thing happened almost every day. I don't blame Deb at all for leaving the industry. Of course, we're in Florida, so you have to expect some redneck attitudes, but from a *woman*?? Glen 0/0

23 years, 3 months

Does Anyone Have A

by Robert_Feldman＠jdedwards.com

Jonathan Engdahl mentioned the TI chip in the Simon game, which reminds me I have some TI TMS34010 chips and one TMS34010 User's Guide that I don' need. The chips are on B+H scanner (?) 3-board stacks with graphic RAM and SCSI and printer ports, and are a bit heavy. I can pull the TMS chip if anyone wants just that. Free for postage. Reply to robert_feldman(at)jdedwards.com.

23 years, 3 months

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