test-drb May 2005

test-drb@ccmp.vtda.org

248 participants
723 discussions

by steerex＠mindspring.com

Hey guys, I am compiling some information for a HP-IB KnowledgeBase article / FAQ and need some input. In order to focus my efforts and get the maximum value from the KB, I need to know what specific information should be included in the KB/FAQ. Some of the topics I am considering are: * Introduction / Tutorial - Basic overview of the protocol * Protocols - HP-IB, GPIB, SICL, IEEE-488, etc... * Characteristics - Electrical and physical characteristics * Instruments - Talking to instruments * Bus Analyzers - IE HP59401A * CS-80 disks - The CS-80 / SS-80 protocols * Programming - Linux, HP-UX, C, assembler, other So... I'd like to hear from anyone that is interested in HP-IB as to what they would like to see in the KB. Please reply to the cctech list or directly to me at steerex[at]mindspring[dot]com. See ya, SteveRob

20 years

'goto" gone from computer languages or is it!

by dave04a＠dunfield.com

>print_ary (ary, DIM (ary)); > >void print_ary (int *aryp, int n) >{ > > goto skip_comma; > for (;n;aryp++, n--) > { > printf (", "); > >skip_comma: > printf ("%u", *aryp); > } > printf ("\n"); > >} >> I'd skip both the GOTO and the conditional and do it: >> >> void print_ary(int *aryp,size_t n) >> { >> size_t i; >> char *sep; >> >> assert(aryp != NULL); /* sorry, gotta check */ >> assert(n > 0); >> >> for (i = 0 , sep = "" ; i < n ; aryp++ , i++) >> { >> printf("%s%u",sep,&aryp); >> sep = ","; >> } >> putchar('\n'); >> } >Clever. I don't like the conditional either, but you are also >unnecessarily reinitializing sep every time through the loop. With the >goto I avoid both the conditional and the reinit. Given that the original example assumes n > 0 (the test is skipped on first entry to the loop), you can accomplish this function with neither an extra conditional, superfluous assignment, extra variables or use of 'goto' void print_arg(int *aryp, unsigned n) { int i; for(i=0; ;) { printf("%u", aryp[i]); if(++i >= n) break; fputs(", ", stdout); } putc('\n', stdout); } -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

20 years

2 UPS/Alarm batteries available

by ajp166＠bellatlantic.net

> >Subject: Re: 2 UPS/Alarm batteries available > From: John Foust <jfoust at threedee.com> > Date: Tue, 17 May 2005 07:43:37 -0500 > To: <cctalk at classiccmp.org> > >And due to my own packrat tendencies, I have a large pile of dead UPSes >of various sizes, along with an item on my very long to-do list >that says "buy replacement lead-acid batteries." Any recommendations >for a supplier in the USA? > >- John There are any number of battery suppliers. APC also supplies them but at 80$(shipping included plus return reciept for the dead ones) for two 7AH batts they arent cheap. I expect to pay less than 26$US for 12V at 7AH new at the local suppliers, cheaper is out there. Allison

20 years

Don Maslin's archive

by Watzman＠neo.rr.com

Re: "But gathering together a large number of rare, desirable items (however subjective) into one place without a will or letter of intent is not "archiving". In fact it's the opposite -- items were taken out of circulation probably permanently." A point here that might be worth making to Don's widow is that since the materials in question are software archives, they can both be made available to the world while she still retains the physical items and library herself. It's not like collecting motorcycles. These items can be duplicated without any destruction of the originals.

20 years

Doing some house keeping and need to find a home for a few items

by g-wright＠worldnet.att.net

Hi, all Need to find homes for a few items. These are in Kent Washington south of Seattle. These are mostly very large items or hard to ship. So pick up here only or arrange for your own shipping. 1- Vax 6000 320 very good condition no real damage to the enclosure missing the hard drives. I believe there where RA-72's drives. Looks complete and very clean inside. Very Large, Very heavy. 100.00 1- TI 990 A13 This does not turn on and has a bad power supply at minimum. Has 2 hard drives with Cartridge tape drives Model WD 800, 3 terminals, 3 or 4 boxes of manuals and tapes. No hardware manuals, just software. Missing the side covers for the rack. and has some damage to one of the front grilles. 400.00 1- TI printing terminal (like a DEC writer). 50.00 1- NEC APC color Computer in the original Box. Has most of the Manuals and software. 8" floppy. Needs a Keyboard. 50.00 1- external hard drive of a NEC APC. APC H-26 unknown condition 50.00 2- HP 7970B Mag tape drives. Both turn on, but have not been tested. both have 1 panel on the front door that has come loose and needs to be reglued. 75.00 ea. 1- Dec writer 3 in very good working condition 75.00 1- Fluke 1775B Printer. New, this is a Tally 1602 with HBIB interface Dot matrix 35.00 1- HP 2601a printer. this is a diablo 630 (serial) Daisy wheel 25.00 1- DEC Micro Vax 2 with M7620 AA (Micro Vax 3), M7621a, Non Dec memory, M7546 Tk50 board, M7555 MFM and Floppy board. Has no Hard drives. Does have TK 50 tape. all of the ext. panels are there. 100.00 1- Cipher 100-860 Mag tape Unknown condition 50.00 1- Tek 4105 terminal, no keyboard. 20.00 1- OutPut Tech. laser printer. Looks looks like a Laser jet 2 But prints on Tractor feed 8 1/2 x 11" paper. Works has new Drum kit. 35.00 1- Barco 400 RGB projector Does XGA with manual. has not been used in a couple of years. Large, heavy and Free 1- Northern Telcom SS400 Disk drive. This is a Small roll around 8" SCSI drive with a Exabyte 2.5 gig tape drive. unknown condition. 25.00 1- Wang PC. This is not a standard PC. Is about 24" deep takes a special monitor. Not included. Has hard drive, and 5 1/4 floppy. I believe I have software Disks. Model PC-002 with Keyboard 35.00 1- Lexmark Optra S2455, laser Printer. high page count but looks like new and works fine. Has second paper bin. prints 24 PPM has P-port and ether net 10/100 75.00 1- NCR 1202 pc ?? this is a all in one Unit with 2 floppy dirves. Lots of add on modules, software and manuals. No Keyboard. 45.00 1- Toshiba Computer. I believe these where CPM systems. Has CPU and Keyboard all in one. with external Floppy drive. No software 25.00 - offers welcome - please don't leave Posts here. email me at g-wright at att.net or call. Day time Phone 800-292-6370 or 253-854-9601 9-6 PST M-F Thanks, Jerry Jerry wright JLC

20 years

[ZS1] RE: text-messaging versus morse code - Jay Leno show

by GOOI＠oce.nl

Ok, to stay OT (sorry, could not resist) it is a uhmm "special" to take a keyboard with you, but you would certainly force respect if you took an ASR33 along :~) - Henk, PA8PDP. > -----Original Message----- > From: cctalk-bounces at classiccmp.org > [mailto:cctalk-bounces at classiccmp.org]On Behalf Of Nico de Jong > Sent: dinsdag 17 mei 2005 15:58 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: [ZS1] RE: text-messaging versus morse code - Jay > Leno show > > > From: "James Fogg" <James at jdfogg.com> > > > > if you want to see the show fragment, here is a URL (8,4 Mb) > > > > > > http://n6tv.kkn.net/Text_vs_Morse_Leno_2005_05_13.wmv > > > > > > 73, > > > - Henk, PA8PDP. > > > > Thanks for the link - it's great to see the juxtaposition of > > technologies. It makes me wish I hadn't missed my > expiration of my ham > > license (N1QCO). > > > Great fragment. > I recently saw a new product : a full size PC keyboard where you could > attach a cell phone, obviously aimed at the text message marked... > Hm, why not build a cell phone into an ASR33, where the modem > usually was > located ? > That would allow for hardcopying txts... > > 73, Nico (OZ1BMC) > >

20 years

text-messaging versus morse code - Jay Leno show

by James＠jdfogg.com

> Hi all, > if you want to see the show fragment, here is a URL (8,4 Mb) > > http://n6tv.kkn.net/Text_vs_Morse_Leno_2005_05_13.wmv > > 73, > - Henk, PA8PDP. Thanks for the link - it's great to see the juxtaposition of technologies. It makes me wish I hadn't missed my expiration of my ham license (N1QCO).

20 years

2 UPS/Alarm batteries available

by tpeters＠mixcom.com

> At 02:50 AM 5/17/2005, Rob O'Donnell wrote: >>Is there any way of rejuvenating sealed lead-acid batteries or is it a >> case of once they fail to hold a charge, they are useless? (And if so, >> does anybody know a very cheap UK supplier of them?) If they haven't been treated well, IE charged by a cheap, non-smart charger or allowed to sit uncharged for long periods or othewise abused, or if they're just plain worn out, there's really no hope for them. Sorry. Stories abound about using capacitor banks discharged through them to rejuvinate them, but that's all pretty much folklore with relatively little basis in fact, except for an extremely limited range of circumstances. ***Dispose of them properly*** they contain lead, a toxic metal. In the US, drag them over to Batteries Plus and just drop them off, free of charge, no questions asked, and they will be recycled properly. In the UK...??? > And due to my own packrat tendencies, I have a large pile of dead UPSes > of various sizes, along with an item on my very long to-do list > that says "buy replacement lead-acid batteries." Any recommendations > for a supplier in the USA? There's a variety of sources, but the best deal so far is a corporate account at Batteries plus. I pay a few bucks more for some types, much less for more popular 12v UPS batteries, and save overall. That's my .015 euro. de N9QQB

20 years

2 UPS/Alarm batteries available

by ajp166＠bellatlantic.net

> >Subject: Re: 2 UPS/Alarm batteries available > From: "Rob O'Donnell" <classiccmp.org at irrelevant.fsnet.co.uk> > Date: Tue, 17 May 2005 08:50:43 +0100 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >Is there any way of rejuvenating sealed lead-acid batteries or is it a case >of once they fail to hold a charge, they are useless? (And if so, does >anybody know a very cheap UK supplier of them?) > > >Rob > For the first question, NO. The second I can not help with the UK though here they are cheap. (USA) One hint, I've used APC UPS's and their software self tests way to often and kills battteries very fast, to the point of excess. Allison

20 years

mini versus micro?

by ajp166＠bellatlantic.net

> >Subject: mini versus micro? > From: Saquinn624 at aol.com > Date: Tue, 17 May 2005 01:48:51 -0400 (EDT) > To: cctalk at classiccmp.org > >One thing that I have been wondering for a while is what the current >definition of minicomputer is. >It used to be contrasted with microcomputers, the telling difference being a >multichip processor implementation versus a single-chip microprocessor [if so, >are the POWER1 and POWER2 processors >minicomputer processors?] but now, with microprocessors being used in >mainframes (and even on-topic mainframes) is this distinction meaningless [i.e. >should the designation "microcomputer" in its size/power context be replaced with >something else?] and, if so, does the [whatever micro becomes]/mini/mainframe >become a question of mass (>700 lbs mainframe, >100 lbs mini, <100 lbs [???]), >or history (the HP3000 started life as a mini, therefore the spectrum models >continue as minis . . .), or does the venerable minicomputer cease to exist? >any other ideas? > >Scott Quinn Minicomputer in my lexicon is any computer that DID NOT start as a microcomputer chip. Examples: Nova, PDP-8, PDP-11 even VAX. Those wer picked as in every case there is a Microcomputer implmentation that came later. In most cases the Micro version is as capable or more so as a result of developmental maturity. Second part of that is it stops being a MINICOMPUTER when it's small enough that a rack is not the standard mounting platform. So age, type and mass are determining factors. The term mini came from the '60s when computers started from filling rooms to fitting in office corners. The concurrent event is skirts got way shorter too, hence the name. Allison

20 years

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test-drb May 2005