test-drb October 2001

test-drb@ccmp.vtda.org

259 participants
770 discussions

by pete＠dunnington.u-net.com

On Oct 4, 11:48, SUPRDAVE(a)aol.com wrote: > Most halfway modern things have environmental criteria for when it's running > and when it's off. For humidity, I've seen the storage range be from 5%-95% > noncondensing and temp range from 0F-110F when not running. I'm running out > of space as well finally, but will not store things in the roof. The key word in there is "noncondensing", which isn't likely to be the case part of the time, unless you do something about it. Corrosion could be a real problem. The easiest way to deal with it is to ensure that the loft is ventilated, but a better way would be to use a dehumidifier. They're not too expensive to run (at least, not compared to heating or air conditioning) and you could run a short drain hose out of the dehumidifier and out of the loft to dispose of the water. > ----- Original Message ----- > From: "Rich Beaudry" <r_beaudry(a)hotmail.com> > > Since I am rapidly exhausting all space in my basement workshop, I need to > > move some of my computers to the loft above our garage. The problem is, > the > > garage is completely UNinsulated, and has only a metal roof (i.e., thin, > and > > NO resistance to temperature -- hot or cold). -- Pete Peter Turnbull Network Manager University of York

22 years, 9 months

back in the saddle again

by ghldbrd＠ccp.com

finally back online with a mailer here. Still getting used to Linux PC over my Amiga 3000. Just for some laughs out there, I want to pass this along . . . . I downloaded about 20k, yes 20,000 emails. Seems my former (and present) ISP maintaianed my email addy and there was an accumulation of emails from last February. took about 7 hrs to dowload, and another 6 to chip through them. Might this be a Guiness Book world's record?? gary Hildebrand

22 years, 9 months

need some advice on some VAX boards ...

by dittman＠dittman.net

> >I suppose you *COULD* write a driver that lets you use the board > >for non-booting devices if you had enough information available. > > That depends on exactly why the firmware > will not play with VAX. My *guess* (based > on exactly no information ...) is that it has > intimate knowledge of some internal > OpenVMS Alpha data structure (page > tables or such like). That's what I meant by enough information. You'd need the source for OpenVMS Alpha, OpenVMS VAX, and the driver as the bare minimum along with hardware specs. > So it is quite possible that you would need > to re-write the firmware to be able to do > *anything* with the board at all. Or you could possibly do the setup in the driver initialization. It would be much simpler to use a CIXCD to an HSJxx controller. When you factor in the development costs the CI solution would be much less expensive as well. We use CIXCD boards in our VAX 7730 systems (actually two for redundancy to dual Star Couplers). -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

22 years, 9 months

classiccmp-digest V1 #737

by andyh＠netcomuk.co.uk

Tony stated: > FWIW, I have never treated _anything_ as a black box where I don't have > to care about what goes on inside. I find it's easier to do good work if > you do understand the internals of the tools and equipment that you are > using. And therefore I have little time for people who aren't prepared to > learn about the insides of their computer/car/whatever... >>>> start of OT rant Although I like to be able to know about the "inside" of things, I am not convinced that it is possible to have anything more than a simplistic view (or even that much) for some things. GSM phones are, at best, borderline. DAB ("Digital Radio") seems to have gone to the level where only a very small proportion of the population (possibly less than a few thousand people worldwide) can really and accurately claim to fully understand how it works*. It worries me somewhat that such a technology is being deployed (as also does the potential for control by government and big business that is lacking in AM and FM radio), but possibly such complexity is inevitable. * sure, I can waffle on about using a spread spectrum technique in Band III to transmit a multiplexed bit stream than demultiplexes to several compressed sequences of digital samples - I might even, with a little research, be more convincing about how this bit stream is handled - but as for really understanding the transmission mechanism, "pass"! <<<< end of OT rant Andy

22 years, 9 months

need some advice on some VAX boards ...

by Antonio.Carlini＠riverstonenet.com

> Eric Dittman wrote: > >I suppose you *COULD* write a driver that lets you use the board >for non-booting devices if you had enough information available. That depends on exactly why the firmware will not play with VAX. My *guess* (based on exactly no information ...) is that it has intimate knowledge of some internal OpenVMS Alpha data structure (page tables or such like). For example, the DMB32 did exactly this - it could run in at least 4 different modes: given physical address (PA), given PA of a VAX page table, given SVA of buffer and given SVA of process page table. I assume the firmware engineers had time to kill :-) So it is quite possible that you would need to re-write the firmware to be able to do *anything* with the board at all. Antonio

22 years, 9 months

need some advice on some VAX boards ...

by Antonio.Carlini＠riverstonenet.com

> > Does that apply to all revisions of the XMI SCSI? > > > > > > T2029-AB XMI-SCSI adapter > > > > > > The XMI-SCSI adapter is only supported on Alpha systems. > > That applies to all revisions. There are no VAX drivers for the > card in VMS. AFAIK, there is no VAX-compatible *firmware*, so you cannot even hope to write your own drivers ... Antonio

22 years, 9 months

need some advice on some VAX boards ...

by dittman＠dittman.net

> T2029-AB XMI-SCSI adapter The XMI-SCSI adapter is only supported on Alpha systems. -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

22 years, 9 months

Scrapping Tektronix 4695 (was Re: Scrapping LA100 & Diablo printers)

by mythtech＠Mac.com

>Sometimes a network connection, even old slow LocalTalk is the most >convient thing to use. Up until the power supply blew on my Powerbook... I always carried this little pair of Farallon adaptors for localtalk. They were single RJ-11 connectors that plugged into the printer port (basically a standard teletalk connector, but the 2nd port was permanently terminated). They took almost no space (about an inch square for the pair), and almost no weight (maybe an ounce for the pair), and used my already carried modem's phone cord to connect between. I think hardly a meeting went by that I didn't use them to transfer files to someone else's computer. Localtalk was always pleanty fast for moving a few word files or a powerpoint presentation... and used WAY less battery power than the IR port (and was easier to use, as I had a Powerbook 1400 which used apple's crappy slow IR protocol, most other people had nicer, newer ones that used IRda, and although could "dumb down" to apple's, it just sucked). -chris <http://www.mythtech.net>

22 years, 9 months

need some advice on some VAX boards ...

by dittman＠dittman.net

> > > Does that apply to all revisions of the XMI SCSI? > > > > > > > > T2029-AB XMI-SCSI adapter > > > > > > > > The XMI-SCSI adapter is only supported on Alpha systems. > > > > That applies to all revisions. There are no VAX drivers for the > > card in VMS. > > > AFAIK, there is no VAX-compatible *firmware*, > so you cannot even hope to write your own > drivers ... Yes, I forgot to mention the lack of firmware as well. I suppose you *COULD* write a driver that lets you use the board for non-booting devices if you had enough information available. -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

22 years, 9 months

Cold/Hot storage of computers -- OK?

by SUPRDAVE＠aol.com

Most halfway modern things have environmental criteria for when it's running and when it's off. For humidity, I've seen the storage range be from 5%-95% noncondensing and temp range from 0F-110F when not running. I'm running out of space as well finally, but will not store things in the roof. In a message dated 10/4/2001 10:18:11 AM Central Daylight Time, menadeau(a)mediaone.net writes: << Extreme cold will damage LCDs--I live in NH, and lost an IXO handheld terminal that way. At my previous home, my storage was similar to what you describe. Also, the heat of an attic will warp some plastics, and I suspect that it accelerates the yellowing process. I didn't have a problem with circuit boards, however. Hot and cold extremes will not be kind to software or to some types of paper. Temperatures aren't the only thing you have to worry about with the type of storage you describe. Vermin (insects, spiders, mice, bats) will also be a problem. I kept my stuff covered with old blankets and tarps to cut down on damage from dust and droppings. The coverings will also help with certain weather conditions common to New England. In springtime when the humidity is high and the temperature rises, moisture will form on metal and plastic surfaces. --Mike Michael Nadeau Editorial Services 603-893-2379 ----- Original Message ----- From: "Rich Beaudry" <r_beaudry(a)hotmail.com> To: <classiccmp(a)classiccmp.org> Sent: Thursday, October 04, 2001 10:06 AM Subject: Cold/Hot storage of computers -- OK? > Hello all, > > Since I am rapidly exhausting all space in my basement workshop, I need to > move some of my computers to the loft above our garage. The problem is, the > garage is completely UNinsulated, and has only a metal roof (i.e., thin, and > NO resistance to temperature -- hot or cold). > > My concern is that the cold of winter or the heat of summer might get to > them. I live in Massachusetts, so winter is not -40 degrees F, but we are > talking below freezing, and possibly below zero for short stretches. In the > summer, it must easily hit 100 degrees F in the loft, due to the hot metal > roof, and the trapped air (no windows!). > > I'm not so worried about the circuit boards, but I am worried about floppy > drives, hard drives, and CRTs. Does anyone know if such temperatures will > kill these things? Obviously I would let the computer acclimate for about > 24 hours after I move it back into my house, to avoid sudden temperature > swings, or condensation. I'm more worried about the storage affecting > them.... > > Thanks! > > Rich B. >>

22 years, 9 months

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test-drb October 2001