test-drb

test-drb@ccmp.vtda.org

101090 discussions

by ethan_dicks＠yahoo.com

--- Joe <rigdonj(a)intellistar.net> wrote: > At 10:08 AM 7/4/00 -0700, Eric wrote: > >On a related note. I have several machines with HPIB/GPIB/IEEE-??? > >type interfaces, and occasionally see disk drives with the same interface. > > I know HP and the Commodore Pets both used that interface. So does my > Tektronix 4051. I don't know if anyone else used it. The DEC MINC (a PDP-11 dressed up for Laboratory use) typically came with an IBV11 card - Qbus GPIB. I have one but I've never programmed anything for it. Presumably, the MINC manuals have more than enough info to get a working start under RT-11. -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Kick off your party with Yahoo! Invites. http://invites.yahoo.com/

25 years, 11 months

Computype Compuedit Revisited.

by dhquebbeman＠theestopinalgroup.com

I was told, but cannot verify, that one of our local newspapers (the Louisville Courier-Journal) had one of these systems; the guy who gave me a "printout" >from a demo program (it was a bunch of words set in various fonts with various additional attributes like boldface, Italics, etc, printed on a plastic film) said the Computype system was front-ended by a DECsystem-20. hth, -doug q > -----Original Message----- > From: David Vohs [mailto:netsurfer_x1@hotmail.com] > Sent: Thursday, July 06, 2000 6:24 PM > To: classiccmp(a)classiccmp.org > Subject: Computype Compuedit Revisited. > > > Some months ago I asked on this group what the Computype > Compuedit computer > was. I was told by someone (who is that person, by the way?) > that it was the > front-end machine to a photo-typesetter from the early 80's. > Does anybody > know where I can find pictures of this thing in operation? > ____________________________________________________________ > David Vohs, Digital Archaeologist & Computer Historian. > Home page: http://www.geocities.com/netsurfer_x1/ > > Computer Collection: > > "Triumph": Commodore 64C, 1802, 1541, FSD-1, GeoRAM 512, MPS-801. > "Leela": Macintosh 128 (Plus upgrade), Nova SCSI HDD, Imagewriter II. > "Delorean": TI-99/4A, TI Speech Synthesizer. > "Monolith": Apple Macintosh Portable. > "Spectrum": Tandy Color Computer 3, Disto 512K RAM board. > "Boombox": Sharp PC-7000. > ____________________________________________________________ > ______________________________________________________________ > __________ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

25 years, 11 months

CRC errors

by allisonp＠world.std.com

From: Tim Mann <mann(a)pa.dec.com> >Of course, with floppy disks we have sectors of 128 to 1024 *bytes*, not >bits, and the CRC is only 16 bits, not 32, so I don't think we can do >much correction. With a 1024 byte sector, it already takes 13 bits of >information to say where a 1-bit error is. So if we use a CRC16 to correct >it, we have about a 2^(-3) = 1/8 probability that if more than one bit >is in error, we'll make a spurious correction. Therein lies the difference, the use of CRC vs ECC, floppies have a fairly high soft error rate compared to hard errors so detecting an error and rereading is the strategy. It is also an economy of design that comes >from the characteristic otherwise you can bet there would be ECC. Allison

25 years, 11 months

Computype Compuedit Revisited.

by netsurfer_x1＠hotmail.com

Some months ago I asked on this group what the Computype Compuedit computer was. I was told by someone (who is that person, by the way?) that it was the front-end machine to a photo-typesetter from the early 80's. Does anybody know where I can find pictures of this thing in operation? ____________________________________________________________ David Vohs, Digital Archaeologist & Computer Historian. Home page: http://www.geocities.com/netsurfer_x1/ Computer Collection: "Triumph": Commodore 64C, 1802, 1541, FSD-1, GeoRAM 512, MPS-801. "Leela": Macintosh 128 (Plus upgrade), Nova SCSI HDD, Imagewriter II. "Delorean": TI-99/4A, TI Speech Synthesizer. "Monolith": Apple Macintosh Portable. "Spectrum": Tandy Color Computer 3, Disto 512K RAM board. "Boombox": Sharp PC-7000. ____________________________________________________________ ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

25 years, 11 months

Tim's own version of the Catweasel/Compaticard/whatever

by allisonp＠world.std.com

From: Tony Duell <ard(a)p850ug1.demon.co.uk> >Yes, but when the microcontroller + Xtal + caps clocks fine on a PCB and >fine on stripboard[1], but fails to work on a breadboard, then I think I am >justified in (partially) blaming the breadboard ;-). No Your not! it is a lousy oscillator and susceptable to stray and all manner of bad things. I've seen them NOT work on very well laid out 4 layer boards as well. >Deadbugging is great!. It's good to a few hundred MHz at least. I've used >if for analogue stuff many times. Yes it is, I've used it to 1GHZ with great success. While I was sick last week I even kluged a 75m phone RX on a 2x4" peice complete with 6kc bandwidth mechanical filter. Looks kinda poor but works solid. Allison

25 years, 11 months

who knows: Celerity [GEI Rechnersysteme] ?

by xds_sigma7＠hotmail.com

One more addition: They were bought by FPS (good ol' Floating Point Systems), in 1988, with the resulting company being called FPS Computing. The FPS 500-series machines are actually Celerity 6000-series minisupers. This company was another company like Convex, Alliant, Sequent, etc. Will J ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

25 years, 11 months

who knows: Celerity [GEI Rechnersysteme] ?

by anmu＠mm-lab.uni-tuebingen.de

hello ! someone offered my a Celerity computer from 'GEI Rechnersysteme'. it is mounted in a 19" rack and has a built in tape drive. unfortunately they cannot provide me further information. so I would like to ask you on the classiccmp-list: - where can I get further information about this machine ? - what hardware is in it ? [bus, cpu,...] - what operating systems run on it ? - should I take it or leave it ? thanks for help, Andreas -- ********************************************************* * Andreas Mueller * * * * Multi-Media-Labor || Uni-Tuebingen * * phone: +49 7071-2978567 or +49 7071-2977821 * *********************************************************

25 years, 11 months

who knows: Celerity [GEI Rechnersysteme] ?

by xds_sigma7＠hotmail.com

This should do it: (sent to the list for everyone's benefit) DATELINE: San Diego, CA March 3, 1986 Word Count:440 Celerity Computing 9692 Via Excelencia San Diego, CA 92126 619-271-9940 CELERITY SIGNS MAJOR OEM PACT WITH LEADING EUROPEAN DISTRIBUTOR SAN DIEGO, March 3, 1986 -- Less than a month after Celerity Computing's introduction of two new superminicomputer design systems, the company has signed a $3 million agreement to supply OEM configurations of the systems to GEI Rechnersysteme GmbH, Aachen, West Germany, a leading European systems house and distributor of of computer systems. Under terms of the two-year agreement, Celerity equipment, including its proprietary 32-bit ACCEL (TM) processor, will be incorporated into systems GEI manufactures and distributes to end-users in industrial automation, engineering design and simulation, and communications. GEI sells both customized and turnkey solutions throughout West Germany and Switzerland to customers including BMW, Audi, Volkswagen, Porsche, Ford, Philips and the German government. "This agreement with GEI represents not only a significant expansion of our presence into the European market, but also a major third- party endorsement of the performance and capabilities of our systems in the mechanical engineering arena," said Stephen Vallender, President of Celerity Computing. GEI installed more than 400 computer systems in 1985. The company is 50 percent-owned by AEG, which recently was acquired by Daimler- Benz/Mercedes. "We want to deliver the highest-quality, top-performance computer products to our customers," said Michael Emrich, President of GEI Rechnersysteme. "We ran benchmarks with all the players in the supermini and CAD/CAM markets, and Celerity clearly beat the others in performance and price." Celerity's UNIX (R) - and reducted instruction set (RISC)-based supermini design systems are the fastest and most powerful office_ environment systems in their price class for engineering and scientific applications. The Celerity C1260, introduced in January, 1986, is a dual-processor system with a benchmarked throughput of 6.15 million Whetstone instructions per second (W/MIPS). It is priced at $110,000 for a functional system configuration. The mid- range C1230, also introduced in January delivers 3.25 W/MIPS for $75,000. Both are deskside systems, allowing engineers to complete design tasks and compute-intensive analysis operations without off- loading to more expensive, remote computers. Three-year old Celerity Computing delivered its first computer system, the C1200, in November 1984. The company has installed more than 60 systems in leading corporations, research centers and universities throughout the United States. Its supermini design systems provide advanced design and analysis capabilities to professionals in a variety of fields, including automotive, manufacturing, aviation and aerospace, molecular modeling, animation, and research. ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

25 years, 11 months

(Fwd) [HP3000-L] Old 960 out to pasture.

by ss＠allegro.com

For anyone out there with an HP 3000/960 (or 960 or 980), or an HP 9000/860 (or 850 or 880?): ------- Forwarded message follows ------- Subject: [HP3000-L] Old 960 out to pasture. From: Debus-David(a)AER.ARAMARK.COM Greetings All, I am finally decommissioning my old and trusty 960. I have gutted the chassis for of all usable boards. They are all available to anyone interested in spare parts for the cost of shipping. One hard to find item is a SCSI bootable CA. There are numerous FL cards and the usual HP-IB cards. I need to move this quickly due to floor space problems. First interested party takes all. Thanks ------- End of forwarded message ------- No...I don't know where he is! (Please don't flame him) Stan Stan Sieler sieler(a)allegro.com www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler

25 years, 11 months

Tim's own version of the Catweasel/Compaticard/whatever

by allisonp＠world.std.com

From: Tony Duell <ard(a)p850ug1.demon.co.uk> >> That's so true! I was surprised to read in the spec's for my first ones >> (and last, by the way) that the capacitance between adjacent contacts is 5 >> pf, I don't remember much else about them. > >And that's probably being somewhat optimistic!... > >I have certainly seen microcontrollers fail to clock properly when >they've been used on these breadboards. Hang a xtal and the 2 33pF (or >whatever) capacitors off them and the strays will mess things up. Often it's not the breadboard but the crude oscillator circuit that was used. the basic osc used in theory should never work but crystals are less deterministic and don't know that. The side effect is hard starting and a slight offset from the marked frequency. >Since soldering is so much more reliable, and just as fast once you get >used to using the soldering iron, I don't see the point of said >breadboards. But anyway... Different issue. FYI I breadboard on a peice of cheapo copper clad AKA dead bug or as the RAH calls it "ugly" construction. Works well and the groundplane is hard to beat. Either name, you lay the bugs upside down and point to point wire them (solder, programming language #1). Copper is ground and everything else aint. Goes together fast and tends to be fast logic and UHF friendly. Allison

25 years, 11 months

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb