test-drb December 2004

test-drb@ccmp.vtda.org

243 participants
530 discussions

by vcf＠siconic.com

So after beating the shit out of this stupid TI power supply (none of your suggestions worked, thanks) I come to find that it does have an internal fuse and that it is complete intact. Wonderful. This thing is shot beyond repair at this point. It wasn't intended to ever be opened apparently. Anyway, hopefully I can figure out what this pile of garbage was supposed to be putting out. Of course, there are no markings on the housing of the transformer. There is an IC in here. It's inline with the hot side of the input voltage. The markings are thusly: UMI EI X25 150(degree symbol)C 2.5A 250V~ A varistor? Anyway, this is a heap of junk now. -- 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

Cooking, fractions & reply attribution... (was: electro-Physics: 17.3409 volts

by dwight.elvey＠amd.com

>From: "Roger Merchberger" <zmerch(a)30below.com> > >Dyslexia. There are a lot more kinds of it than just writing your letters >backwards (my type) -- I have two friends that *just can't spell*, and my >wife is LD in math; she can't handle decimals or fractions! Oh, guess who >has the most college degrees of the 4 people I just mentioned: my wife. > >Some people's brains are just plain *wired funny* -- sometimes it's a good >thing, sometimes it's not. > >Laterz, >Roger "Merch" Merchberger Hi When I was in grade school, I used to get B+'s on my math test. The teacher told me to write down the intermediate steps so that I could get more credit for partial solutions. Up till then I'd been working the problems out in my head and then just writing out the answer. An interesting result happened. My intermediate work had the same number or percentage of errors as my final results. Of course, I still worked them in my head or the final results would have been worse because of the cumulative effects. This was one of the first indications that I was dyslexic and not just lazy ( I was that as well ). I just made errors in translating what was in my head to the paper. Later, I found simple ways to check my results and got 100% on my test :) Dwight

20 years

5-1/4' drive on modern PC

by dwight.elvey＠amd.com

>From: "Gene Ehrich" <gehrich(a)tampabay.rr.com> > >Is there anyway that it can be attached external to the PC through serial, >parallel or USB ports > > Hi Yes and No. Of course, one can make some hardware to handle the drive and connect it to anything. There are 3-1/2 inch drives for the USB. It might be that the software would see a 5-1/4 drive as it is through one of these interfaces. Remove the 3-1/2 and wire it to the 5-1/4. For the parallel, I have some hardware someplace that can connect an IDE drive to the parallel port. I don't think I've seen anything for a floppy. Although, I've seen tape drives that connect to the parallel port. These normally connect to a floppy port. One might be able to do something with one of these interfaces. One of the catalogs that I've seen recently had a USB experimenters kit. One could most likely use one of these with a PIC and a controller chip to interface to just about any drive. Does anyone recall if the ZIP drives were on the floppy ports? If so, one could take a parallel ZIP dive and remove the drive part to connect a floppy drive. One still needs to create some software. It is still just a problem of hardware and software. A better idea might be to locate an older machine at one of the second hand stores and use that. Dwight

20 years

Zitel card?

by rigdonj＠cfl.rr.com

Does anyone know anything about Zitel? Pr what bus this card uses or anything about the card? <http://www.classiccmp.org/hp/a4/zitel.jpg>. I seem to remember that Zitel was a copy cat of Intel. Joe

20 years

about iSBC 86/30 single board computer

by xiaohancs＠163.com

Dear sir, There is a message on http://www.classiccmp.org/pipermail/cctech/2003-January/008285.html I am wondering whether it is still effctive or not.Now I am eager for iSBC 86/30 single board computer hardware reference manual.So can you be so kind to give me a reply? Yours sincerely 　　　　　　 D.P.-Han 　　　　　　 xiaohancs(a)163.com 　　　　　　 2004-12-14

20 years

KM11 clone

by GOOI＠oce.nl

Yep, a PDF file for the overlays would be OK for me. Saves shipping/handling. We can print the file(s) ourselves. What I wanted to say: I hope I will not have to search all documents on bitsavers to get the overlays. The parts list and an assembly instruction would be nice though. I hate to be surprised like "Ahh, I should have soldered that component afterwards...!^#%$ :-) - Henk. > -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org]On Behalf Of Ethan Dicks > Sent: dinsdag 14 december 2004 11:49 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: KM11 clone > > > On Tue, 14 Dec 2004 09:52:59 +0100, Gooijen H <GOOI(a)oce.nl> wrote: > > Ok Guy, hold your breath ... I want 5 bare boards !! > > I assume that the bare board includes the overlays, > instructions, etc. > > I don't mean to speak for Guy, but all I am expecting is the boards > themselves, plus a parts list, plus a .pdf or something similar to > print my own overlays (on clear laser-printer acetate). > > Guy... are my expectations reasonable? > > -ethan

20 years

KM11 clone

by GOOI＠oce.nl

> OK, I just got a couple of board quotes with larger quantities. If I > can get an order of ~50 boards, I can drop the prices by $40! So the > pricing would be: > "Bare" Board $35 > "kit" (includes all the parts) $85 > assembled and tested $250 (I still don't want to) > > If I can get a preliminary count of folks who one (or two or...) I can > get the boards and parts ordered. I'd like to place the orders during > the first week of January. > -- > > TTFN - Guy Ok Guy, hold your breath ... I want 5 bare boards !! I assume that the bare board includes the overlays, instructions, etc. I am in The Netherlands, and assume that you will ship the boards in a US Priority Mail enveloppe, just as Vince did with the blinkenlight project (Core and I/O Board). You did not yet mention payment instructions; I guess PayPal is fine? - Henk, PA8PDP. www.pdp-11.nl

20 years

KM11 Clone

by GOOI＠oce.nl

> It's the RK11-C... there's a single slot facing the front of the rack > that I expect is where it goes. The RK11-D is a quad backplane > thingie that goes inside a BA-11 or some such (and the RKV11-D is a > version of it that fits in an external 4-slot enclosure with a set of > cables and a paddle card that go to a host's Qbus. > > I'd be interested to know what _other_ peripherals have a KM11 slot. > I personally want one to debug my RK11C (even though I am usually > using my RK05s with the aforementioned RKV11-D) just for the sake of > doing it. I do _have_ at least one RK11D that I could use for "real > work", but I'd like to get the -C working nonetheless. > > -ethan I read that the 11/40 CPU has 2 positions in its backplane for KM11's. In slot 1 (the first), position F the KM11 is used as a monitor for the KD11-A CPU and it allows to microstep the CPU instructions. When the KM11 is installed in slot 1, position E, the KM11 monitors KT11-D (the MMU), KE11-E (EIS optin) and KE11-F (FIS option). So, to go the full stretch you'd need 2 boards to watch everything in a PDP-11/35 (or /40), but I wonder if you'll ever need/do that ... except to see it once in actual operation :-) Note that DIGITAL writes that in normal operation the KM11 is *not* part of the system. - Henk, PA8PDP.

20 years

by Saquinn624＠aol.com

(1) The copyright of a photograph is held by the photographer, hence, in this case, CNN (2) The first amendment ONLY APPLIES TO GOVERNMENT. For private property, trespass laws do apply, and unwanted press can be barred or removed. (3) There is no need to be rude. I fail to see how an attitude like that taken by Even can aid his career. Scott Quinn

20 years

Model 129 Keypunch on eBay with 30 minutes to to!

by wmaddox＠pacbell.net

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=5145489194&ssPageNa… eBay item 5145489194 (Ends Dec-12-04 19:00:00 PST) - IBM 129 keypunch verifier vintage card punch

20 years

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test-drb December 2004