test-drb September 2004

test-drb@ccmp.vtda.org

268 participants
648 discussions

by phirkel＠sympatico.ca

Hello (again!). I'm very pleased with my VAX 4000/300 thus far, but I'm about to get a KZQSA card from someone, and I need to move my TQK70 controller over on the Q-bus so that the KZQSA card can fit into the machine. However, when I did a test run of this, the card was responding (show dev showed the card), but it wouldn't find the TK70 tape drive attached to the TQK70. Is there a jumper I have to set? Or did I screw up in some other way? Thanks. Phil.

20 years, 3 months

Cromemco docs needed

by rcini＠optonline.net

Hello, all: I'm looking for a copy of the docs for the Cromemco Dazzler video board. If anyone has this, either paper or electronic, please let me know. Thanks. Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

20 years, 3 months

Heathkit ETA-3400 Modifications

by Watzman＠neo.rr.com

I was sent a set of GOOD scans of the ET-3400 mods and have created a PDF file. It's now on the classic computer documentation DVD that I'm selling, but also I've asked Howard Harte to post it to his site, so hopefully everyone will be able to download it from there soon (perhaps by tomorrow (Thursday, 9/9)). I'm willing to scan any LOOSE (unbound) manuals and produce high-quality PDF files, I have a high-end 2400 dpi scanner with an ADF (sheet feeder) that can do over 200 page per hour (of double sided-material) unattended. Contact me if you think that you might have something not in the collection. Originals (or copies) can be returned. Bound documents are much, much more difficult, although I've done more than a few. Barry Watzman Watzman(a)neo.rr.com

20 years, 3 months

who can identify this vintage card - "DAD-48" ?

by dwight.elvey＠amd.com

>From: "B.Degnan" <billdeg(a)degnanco.com> > >I have a mystery card to identify within a pile of miscellaneous cards >acquired recently. On the card is printed "DAD-48 Computer Dynamics, Inc. >1985." The cable jack is a 50-pin female. I am having trouble locating >specifics on the web, and I have looked everywhere. Where might one use >this card? Is it PCI SCSI? > >A picture is worth a thousand words. Here is a page I put up with some >pictures >http://vintagecomputer.net/dad-48/ > >Thanks in advance. > >Bill >Wilmington, Delaware >vintagecomptuer.net > > > Hi Bill Looking at the parts on the board, it is a multi channel A/D board. It looks like a Standard Bus but I think there should only be 50 pins. The TSC 800 is a dual slop A/D ( slow but very good resolution ). The AD667's are analog somethings by Analog Devices. They might be D/A's or analog swithces. It looks like there is a bunch of input amplifiers. This could be for anything from a simple A/D to a temperature measurement board. Anyway, it is definitely and analog interface board. Dwight

20 years, 3 months

Vintage hardware in Los Alamos NM

by news＠computercollector.com

What's the web site?

20 years, 3 months

*** Ideas needed for developing interactive displays....

by pete＠dunnington.u-net.com

On Sep 8 2004, 15:13, Tom Jennings wrote: > How about, 'type you name here' and it spits out paper tape with it > punched as text? (I have C code for this). Paper tape is cheap even > today, as you'd only need a foot or two per visitor. I was going to add that but ran out of tinme, when I... > (And if the tape had their name also coded as machine-readable, you > could use it as a 'ticket' for other displays or activities...) ... wrote a short piece of PDP-8 assembler to do that on the ASR33 for my nieces. Several of the visitors who have seen my PDPs have asked for a bit of tape with something punched on it. -- Pete Peter Turnbull Network Manager University of York

20 years, 3 months

11/23 or 11/03 picture of DEC/PDP logo

by pete＠dunnington.u-net.com

On Sep 7 2004, 17:57, Megan wrote: > >> BA11-M (11/03) DEC/PDP logo in glorious DEC maroon: > >> http://hampage.hu/pdp-11/kepek/pdp1103.jpg > > >That doesn't look original to me. > > It is... but a later version of the panel. You can tell by > the inset screws at the ends of the panel. I also have one > in storage at the moment... I stand corrected :-) I've only seen one of those panels with the screws before, and it was plain grey. -- Pete Peter Turnbull Network Manager University of York

20 years, 3 months

Cool book

by vcf＠siconic.com

Say, I found a mighty swell book today at the local ham swap. Title: The "Compulator" Book - Building Super Calculators & Minicomputer Hardware with Calculator Chips (How to mate the COMPuter with the calcULATOR) by R. P. Haviland. Several copies are available on ABE, Alibris, etc. NeAt-O! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

20 years, 3 months

Interactive displays was Re: Cool book

by mmcfadden＠cmh.edu

Cameron Kaiser Wrote > You are a sick person Sellam. I see you have already > had a good swig of that Hg. > > Just wait until the t-t-t-t-t-t-t-t-t-t-tremours start. > I think he has the mad hatter syndrome. Reference From http://www.hgtech.com/Information/Mad%20Hatter.htm /begin reference Hatters really did go mad. The chemicals used in hat-making included mercurous nitrate, used in curing felt. Prolonged exposure to the mercury vapors caused mercury poisoning. Victims developed severe and uncontrollable muscular tremors and twitching limbs, called "hatter's shakes"; other symptoms included distorted vision and confused speech. Advanced cases developed hallucinations and other psychotic symptoms. The popular top hat of the time were made from beaver fur, but cheaper ones used furs such as rabbit instead. A complicated set of processes was needed to turn the fur into a finished hat. With the cheaper sorts of fur, one step was to brush a solution of mercurous nitrate on to the fur to roughen the fibres and make them mat more easily, a process called carroting because it made the fur turn orange. Beaver fur had natural serrated edges that made this unnecessary, one reason why it was preferred, but the cost and scarcity of beaver meant that other furs had to be used. Whatever the source of the fur, the fibres were then shaved off the skin and turned into felt; this was later immersed in a boiling acid solution to thicken and harden it. The acid treatment decomposed the mercurous nitrate to elemental mercury. Finishing processes included steaming the hat to shape and ironing it. In all these steps, hatters working in poorly ventilated workshops would breathe in mercury vapor. /end reference Haven't we all heard about putting on your thinking hat to solve a problem. Aren't computers just big problem solvers, so by induction a thinking hat is just a computer. Personally I hope my wife thinks I'm just "eccentric", not mad. I tell her it's better that I collect computers instead of wild women, drugs, gambling, cars, guns, horses, and speeding tickets. Mike

20 years, 3 months

survived another one!

by dwight.elvey＠amd.com

>From: "Dave Mabry" <dmabry(a)mich.com> > >Joe R. wrote: > >snip > > >> >> I'd already pulled the most usefull boards and stored them inside. The >> remainder of the boards, CRTs, PSUs MIGHT eventually be usefull but I >> should already have all the parts that I'll ever need. I currently have >> eight fully operable MDS-800, two operable and one non-op MDS-2xxs and lots >> of spare parts. I don't really have the room to store the remaining >> chassis. That's why they're sitting outside. >> >> Joe >> >> > >EIGHT!!!! Damn, you are a hoarder! I can store one of those in a dry >environment for you. ;) Hi Now be nice Dave. You know you might need one of those boards some day. Joe is a great resources. Dwight

20 years, 3 months

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test-drb September 2004