test-drb August 2004

test-drb@ccmp.vtda.org

283 participants
661 discussions

by cb＠mythtech.net

>> Magnevox Odyssey 1 - Not really a computer (It was analog!), but farily >> uncommon, and predecessor to the really-a-computer Odyssey 2. I have one of these, but I'm missing most of the overlays. Also the rifle for some of the games is long since trashed. Some day I'll dig the thing out and see if the system itself still works. -chris <http://www.mythtech.net>

20 years, 5 months

Electronics Barn closing

by dwight.elvey＠amd.com

>From: "Cameron Kaiser" <spectre(a)floodgap.com> > >> > He got red in the face when I asked him how he's teaching kids any >> > base OS principles such as state-saving and interrupting. Meaning, >> > kids don't go there, pretty much. The next major version of a >> > known OS will probably be without interrupts, as none of the >> > programmers will have any knowledge about them anymore ;-) > >> OH, like DOS again! > >DOS is an operating system? ;) > Windows is not. It is an application interface. Dwight

20 years, 5 months

rarest computers

by dwight.elvey＠amd.com

>From: "SHAUN RIPLEY" <vax3900(a)yahoo.com> > ---snip--- >In my eyes X86 is not bad at all. Every divert from >X86 Intel made was a failure. I432, I860, I960, >Itanium, all failed. Maybe 8051 is an exception. Also Hi I'd not say that either the 432 or 8051 were spawned >from the X86. Also, even though Intel doesn't deal with it anymore, the 186's are still quite popular for embedded. Most CISC processors of today run with a RISC core. CISC has the advantage of more efficient use of bulk memory bandwidth while RISC can be more easily handled for things like pipelining and multiple execution engines. Dwight >CISC won the battle with RISC finally. It might be >better for DEC to develop faster VAX than to develop >Alpha. > >vax, 3900 > >> >> William Donzelli >> aw288(a)osfn.org >> >> >> > > >__________________________________________________ >Do You Yahoo!? >Tired of spam? Yahoo! Mail has the best spam protection around >http://mail.yahoo.com >

20 years, 5 months

HP 2100 manuals on ebay

by aek＠spies.com

I didn't bid on this (was preparing to snipe), but finally talked to the other bidder and was sure the documentation would be preserved on bitsavers. -- Copies of those documents have been scanned, and are in the queue to be pdf'ed I probably should put up a list of what has been done to see if people would volunteer to postprocess the scans. On a good day, I can finish about 1000 pages while on average I have been scanning about 4x that per day. I just checked the /scan directory and it's around 80gb, with only about 25gb postprocessed.

20 years, 5 months

Why do MRV11-D's crap out?

by dwight.elvey＠amd.com

>From: "Ed Kelleher" <Pres(a)macro-inc.com> > >I get requests for MRV11-D's regularly, like once a week. >Had a bunch and sold them. >Still have several in the field and have never seen one fail. > >Are these things going bad? >Can't believe people are building new systems with them. >There's nothing much on them, just 2 boot ROM's and a simple QBUS interface. >The set of MXV11-B2 boot ROMs I have are 2764A's. >Do these die after awhile? >Just sitting here scratching my head. > >Ed > > Hi Ed Most EPROMs are rated for 10 years. That doesn't mean that every one will last that long. Also, many of these types of systems were all made with EPROMs from the same lot. If there was a long term issue, they'd all fail. Dwight

20 years, 5 months

rarest computers. was: RE: Xerox Alto Restoration + Emulation

by dwight.elvey＠amd.com

>From: "John Honniball" <coredump(a)gifford.co.uk> > >Dwight K. Elvey wrote: >> 3. Olivetti M-20 > >I want one of these! ---snip--- Hi John These were also labeled as L-1's with slightly different add-on hardware options. Some had color but mine is only black and white. I believe there was a M-30 as well with the Z-8000 but I've never seen one of these. I'm quite enjoying reading about all the unusual items that are in many collections. It seems we all have some interesting items. Dwight

20 years, 5 months

First computer with real-time clock?

by dwight.elvey＠amd.com

>From: "Paul Koning" <pkoning(a)equallogic.com> ---snip--- > >For autonomous timekeeping independent of technology, the state of the >art was a second per year or so (that's 10^-8, roughly) around the >early 1900s. First with pendulum clocks (Shortt clock), then around >the 1940s or so crystal clocks came in that could match this. And not >too long after that there came the rubidium (10^-10) and cesium >(10^-14) clocks. Some of that would be found in military gear, I >think (Rb at least, Cs somewhat less likely). Consider GPS >satellites, which have either or both built-in. > > paul > > Hi I thought I'd mention that GPS satellites are very precise but no longer accurate. The world standards like UTC are not on the same second as used for GPS. I don't recall how far things have changed but for political and other reasons, the world time standards have been changing. GPS are still locked to being relative to particular data and time. Every one else has had a few leap seconds here and there. There is a chart someplace on the web that shows how things are. Dwight

20 years, 5 months

EPROM Erase or Program service

by vcf＠siconic.com

In light of recent conversations, I found this eBay auction interesting: EPROM : ERASE OR PROGRAM EPROM SERVICE PERFORMED http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=50914&item=3830935563 -- 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, 5 months

rarest computers

by Adrian＠beovax.co.uk

> -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org] On Behalf Of Bryan Pope > Sent: 03 August 2004 16:30 > To: cctalk(a)classiccmp.org > Subject: Re: rarest computers > > > Magnevox Odyssey 1 - Not really a computer (It was analog!), but > > farily uncommon, and predecessor to the really-a-computer Odyssey 2. > > Wow! I didn't know this.. (that it's analog) .. very cool! :) Mine's been disassembled here: http://www.binarydinosaurs.co.uk/Museum/Magnavox/odyssey.php 'all' that circuitry can generate is 2 player objects, a ball object and optionally a net object down the middle. Top stuff! Cheers w

20 years, 5 months

AT&T General Purpose Sychronous AT/Enhanced card

by hrs-accounting＠wi.rr.com

Do you still have this card? Connie Kreis Financial Manager High Reliability Systems 469 Decorah Road West Bend, WI 53095 p 262-268-0911 f 263-268-0967 hrs-accounting(a)wi.rr.com

20 years, 5 months

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test-drb August 2004