test-drb May 2005

test-drb@ccmp.vtda.org

248 participants
723 discussions

Seven Segment Displays (but in avionics)

by ajp166＠bellatlantic.net

> >Subject: Re: Seven Segment Displays (but in avionics) > From: Brent Hilpert <hilpert at cs.ubc.ca> > Date: Thu, 05 May 2005 13:54:27 -0700 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> >Thanks, googled and found a picture that matches the layout of what I have, >labeling associated with the picture was ambiguous, but I think it's the ARC 400 DME unit. > >(http://www.barronthomas.com/21081t.htm, 3rd unit down in avionics stack, >deep-red displays showing 118 and 108) They also had a Navcom with flipflop displays. They may not have been the only user. I just happen to know about that case as I fly a Cessna and live by a unusually relaible ARC308C. >> Line breaks every 80 or so chars would help. >....hmmm, figured everything would auto-wrap by this day ... >80 column limits: now that's vintage/legacy computing. Any your expect what on a Classic list? So happens I use Popcorn for to watch this list and it's dumb as a stump and fairly virus proof. Otherwise T-bird is the regular mailer an issue. I hate Mickyspooge and even though I use the OS I try to NOT use the associated apps that are buggy, insecure and leaky. Allison

19 years, 7 months

All things ESDI

by KParker＠workcover.com

<<< I think on some ESDI controllers, the C800:5 trick did work, though. I located the manual on Adaptec's web site and this is basically the only instruction you give the controller after loading debug. Whilst I haven't tried or seen it, it supposedly loads some option driven system to setup the drives. ++++++++++ Kevin Parker Web Services Consultant WorkCover Corporation p: 08 8233 2548 m: 0418 806 166 e: kparker at workcover.com w: www.workcover.com ++++++++++ -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Dennis Boone Sent: Thursday, 5 May 2005 3:52 AM To: cctech at classiccmp.org Subject: Re: All things ESDI > ESDI was common in high-performance machines and for "large" drives > - 120MB was about the smallest I saw (when 20MB - 40MB was still > common) and ~330MB was typical. I have heard of ~600MB units but > never installed one. I think I handled a 600 in a Novell server once. > It's an Int11 device, just like an ST-506 drive. The BIOS needs > to be configured with the right number of heads, cylinders and > sectors-per-track, tho' picking type 20 or so will usually give you > enough to boot and read the true settings off the drive itself. They > will probably need to be low-level formatted if moving them from > one controller to another. DEBUG and then G=c800:5 is what I dimly > recall for this, tho' in later years I used CheckIt or even SpinRite > to do this. I'm inclined to disagree, though I'm hardly the expert. Specifically, I recall having trouble setting up several ESDI drives in servers. The fix was to tell the machine BIOS the disk didn't exist, then let the ESDI controller BIOS work out geometry. I think on some ESDI controllers, the C800:5 trick did work, though. That was a common disk interface, MFM, ESDI etc. De ************************************************************************ This e-mail is intended for the use of the addressee only. It may contain information that is protected by legislated confidentiality and/or is legally privileged. If you are not the intended recipient you are prohibited from disseminating, distributing or copying this e-mail. Any opinion expressed in this e-mail may not necessarily be that of the WorkCover Corporation of South Australia. Although precautions have been taken, the sender cannot warrant that this e-mail or any files transmitted with it are free of viruses or any other defect. If you have received this e-mail in error, please notify the sender immediately by return e-mail and destroy the original e-mail and any copies. ************************************************************************

19 years, 7 months

OT Don't read this (was Re: Altair MBL source)

by pete＠dunnington.u-net.com

On May 5 2005, 14:48, der Mouse wrote: > >>> If you inhale a gas which is heavier than air, what happens? > >> You die rather quickly as you can't get the BAD air out of your > >> lungs. > > That's what I always thought, but it seemed like people were refuting > > that. I thought the heavier gas sank into your lungs and displaced > > the air, which made you suffocate, effectively. > > You're forgetting that while gases do stratify based on weight, this > takes time. If you were take a lungful of a mix of gases and hold it, > completely still, for a long time (hours to days), yes, it would > stratify out. Sorry, but that simply isn't so. Put two gasses together and each will diffuse evenly throughout the space they're contained in. Left undisturbed, they will not separate out in layers. Unlike liquids, all gasses are miscible with each other. -- Pete Peter Turnbull Network Manager University of York

19 years, 7 months

Seven Segment Displays

by marvin＠rain.org

I have eight NOS seven segment displays in a 16 pin DIP package. These displays have a glass cover and each of the segments have a wire running between the two contacts. The only markings I see are "Japan" and "3015-5" on the back and "C-27-09" on the side. My suspicion is that they are incandescent but I haven't found any information on them yet using Google. Does anyone know what these things are called?

19 years, 7 months

XT 5160

by KParker＠workcover.com

Can anyone advise what OS shipped with the IBM XT 5160 - I can't seem to find a definitive answer on the net. TIA!!! ++++++++++ Kevin Parker Web Services Consultant WorkCover Corporation p: 08 8233 2548 m: 0418 806 166 e: kparker at workcover.com w: www.workcover.com ++++++++++ ************************************************************************ This e-mail is intended for the use of the addressee only. It may contain information that is protected by legislated confidentiality and/or is legally privileged. If you are not the intended recipient you are prohibited from disseminating, distributing or copying this e-mail. Any opinion expressed in this e-mail may not necessarily be that of the WorkCover Corporation of South Australia. Although precautions have been taken, the sender cannot warrant that this e-mail or any files transmitted with it are free of viruses or any other defect. If you have received this e-mail in error, please notify the sender immediately by return e-mail and destroy the original e-mail and any copies. ************************************************************************

19 years, 7 months

Now hard drives too. Re: Modern floppy disk question...

by ajp166＠bellatlantic.net

> >Subject: Re: Now hard drives too. Re: Modern floppy disk question... > From: Cameron Kaiser <spectre at floodgap.com> > Date: Thu, 05 May 2005 07:34:33 -0700 (PDT) > To: cctalk at classiccmp.org Hard drives over the years (1981 to current) have all bee cause to curse the makers. Depending on the year I've had seagate, WD, Quantum, Maxtor, Fujitsu, Toshiba, and others on the do not touch list. It varied with model and subtle tech variations. Currently (since about the 9GB sizes came out) Maxtor is on the junk list. Before that it was Seagate and Connor. Ive found anything .0 is suspect and the latest and greatest HD of the max size is susceptable. Allison

19 years, 7 months

All Things ESDI

by aek＠bitsavers.org

National Semi had a very good series of App notes on disk interfaces back when they were in the biz. AN-500 describes the ESDI interface. There is another one that has a general overview of all the interfaces from the mid-80s AN-413 re: Dilog manuals, DQ686 and 696 should be up on bitsavers soon

19 years, 7 months

Fwd: karl de leeuw

by tpeters＠mixcom.com

>From: "the Ranks" <theranks at wi.rr.com> >To: <cctalk-bounces at classiccmp.org> >Cc: "Tom Peters" <tpeters at mixcom.com> >Subject: karl de leeuw >Date: Thu, 5 May 2005 17:18:29 -0500 >X-Spambayes-Classification: ham > >Hi > >I've searched the universities web site for you and found their e-mail >phone book at ><https://solis-ugids.uu.nl/>https://solis-ugids.uu.nl/ > >However when I searched for leeuw.. the proper way the search for a "de >Leeuw" last name, nobody came up as a K. de Leeuw >If you can give me a department name and some more info... is he really in >Utrecht? I might be able to help you more. >I do speak dutch so surfing their web site is no problem. Hope this helps >somewhat > >Louisa [Philosophy] "I'm sorry, if you were right, I'd agree with you." -- Robin Williams in "Awakenings" --... ...-- -.. . -. ----. --.- --.- -... tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB ADDRESS http//www.mixweb.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531

19 years, 7 months

XT 5160

by eriksklein＠pacbell.net

There was also a DOS 1.05 released between 1.00 and 1.10 that fixed a math bug in BASIC, if I recall correctly. It was available from retailers but it was never sold as a packaged item. I've got a copy of it, obtained from ComputerLand, in my DOS 1.0 box. I'm pretty sure it boots as DOS 1.0 but contains new BASIC and BASICA programs. Erik Klein www.vintage-computer.com www.vintage-computer.com/vcforum The Vintage Computer Forum Fred Cisin <cisin at xenosoft.com> wrote: > Kevin wrote: > > Can anyone advise what OS shipped with the IBM XT 5160 - I can't seem to > > find a definitive answer on the net. On Wed, 4 May 2005, Eric Smith wrote: > None. IBM-DOS was available for separate purchase, as were several > other operating systems. Eric is right, of course, but IBM (and particularly some third party IBM dealers, such as Computerland) also liked to bundle a few products together. Since low level format of hard drives was only available in the "Advanced Diagnostics", if you bought a machine and OS at the same time, IBM would gladly "install" it. PC-DOS 1.00 was released simultaneously with the 5150. (8/11/1981) PC-DOS 1.10 added support for double sided drives. PC-DOS 2.00 was released simultaneously with the availability of the XT, and added support for 9 sectors per track (v 8), subdirectories, and hard drives. PC-DOS 2.10 was released simultaneously with the PCJr and "portable PC", and slowed down disk access for the lousy Qume 142 drives PC-DOS 3.00 was released simultaneously with the AT, and added support for 1.2M floppies. PC-DOS 3.10 added the network redirector and a few other items. PC-DOS 3.20 added support for 720K 3.5" drives. PC-DOS 3.30 was released simultaneously with the PS/2s, and added support for 1.4M drives. PC-DOS 4.00 added support for hard drives > 32M PC-DOS 5.00 add some bundled software PC-DOS 6.10 added bundled Compression. PC-DOS 7.00 is too new to worry about. NOTE: 1.25, 2.11, and 3.31 were only available as MS-DOS, NOT PC-DOS. -- Grumpy Ol' Fred cisin at xenosoft.com

19 years, 7 months

OT Don't read this (was Re: Altair MBL source)

by dwight.elvey＠amd.com

>From: "Brad Parker" <brad at heeltoe.com> > > >"Eric Smith" wrote: >>Brad wrote: >>> If you inhale a gas which is heavier than air, what happens? >> >>Dwight wrote: >>> You sink? > >lol. > >I'm not disputing what anyone is saying, but why did the backup operator >hit the floor in about 5 paces? The room was full of refrigerant >(freon?) which had leaked from the a/c unit (a big huge box unit with a >chiller on the roof). > >I assumed it was because the refrigerant displaced all the air in his >lungs. He passed out *very* quickly - like a few paces from the door. > >-brad > Hi I would assume that where he was, there wasn't enough oxygen. Remember that it takes some time for the gas to mix and diffuse throughout the room. I'm told that even for halon, one should hold ones breath so that you have some oxygen in your lungs until things have a chance to mix. As Eric noted, the gas will quickly mix with the air to become a percentage of the rest of the air. The diffusion forces on gas tend to out weigh the effects of the weigh of the gas. Once mixed, it doesn't unmix easily. It is similar to water and salt. One can carefully pour fresh water over salt water but if it is mixed, it will not separate by weight. Dwight

19 years, 7 months

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test-drb May 2005