test-drb July 2001

test-drb@ccmp.vtda.org

301 participants
824 discussions

by chomko＠greenbelt.com

I've been accumulating the damages from a recent thunderstorm. Wow! Originally I thought it was just a GFI breaker and the phones. But it turns out that a computer got hit (just a PC), and the cable box as well as a TV. I'm making a list (8 entries so far). Thank God my bro-in-law here in Maryland gave me a surge supressor that I put on my SWTPC. Makes me think I need more of those things. Anyone else have such an event happen? Also, take this as a warning to protect you most valuable possessions. I intend to get a few more surge suppressors to protect stuff. This is the one and only time that this has happened to me, and I'm felling lucky. Eric

25 years, 1 month

new scans

by GOOI＠oce.nl

Hi all. I finally found some time to continue scanning doc. So far I scanned (at 600 dpi) the following manuals. Each chapter is a separate TIFF file. - PDP-11/34 system user manual - PDP-11/34 maintenance manual - PDP-11/34A power system description - KY11-LB SLU/RTC programmers console/interface operation & maintenance manual - DL11-W SLU/RTC operators manual Also the following Field Maintenance Print Sets (FMPS) and Engineering Drawings (ED) are scanned at 600 dpi. They are broken into several parts, though the files are still quite big. - 11/03 Engineering Drawings MP00049 & MP00050 KD11 MP00051 MMV11-A G653, H223 MP00052 EIS & FIS, backplane, power assy, H780 MP00055 DLV11 BA11-M, H9270-A, H780 - FMPS DD11-A - ED DD11-D - FMPS DRV11 MP00054 (M7941) - FMPS LA38 MP00754 - FMPS LA8 MP00075 - FMPS LAX35-CL MP00714 (20 mA current loop), MP00738 - FMPS LAxx MP00248 serial interface - FMPS MXV11-A MP00730 (M8047) The list above is 300 Mb. So still some 340 Mb to go to fill an other CD-ROM. Next I will scan the 11/34 FP processor and the cache, after that I will start on the 11/35 and core (MF11). Anyway, is there interest in these high quality (I think) scans? happy holidays, Henk.

25 years, 1 month

(OT) Sgi Indy

by jrice＠texoma.net

Thanks to eBay and a couple of list members, I now have my Indy up and running and on the 'net using my ISDN router as the gateway. I can also ping my office network through the other router. I'm currently running IRIX 6.5. It has a R4400SC 150mhz cpu, 192mb ram, a 24bit graphics card, Granite kb, mouse and 20" Trinitron monitor, a 2gb hard drive and an Indycam. I'm building an external SCSI box to house a DAT drive, the CD-ROM, a CD-R drive and a 2gb option drive. Now I need to find a Presenter, a Cosmo board, a 10/100 GIO ethernet card, the XZ graphics board and floptical drive to have a fairly complete system. It looks good sitting on my desk next to the NeXT TC slab. Now for my next project, to get the Sparc Station 5's I bought the other day up and running!

25 years, 1 month

RS/6000 AIX boot floppy

by mcguire＠neurotica.com

Anybody here have an AIX3 for RS/6000 boot floppy that they could send me an image of? Thanks, -Dave McGuire

25 years, 1 month

DATA I/O ftp files

by mranalog＠home.com

Just for everyone's information About a year ago someone mention that DATA I/O had taken down the all the files of family/pinout codes for their old prom programmers. In response to a recent request for information. I checked again and it seems that most of them are back on their web site. What I found by looking through the files: Go to http://www.dataio.com/support/ftp.htm This is DATA I/O's FTP site Select "device lists" Then select ",archive" There is a file called "wallchrt.exe". This is a self-extracting archive file. Run it in an empty directory. After it has extracted it's files, click on "WC.BAT". Wallchart is a menu driven DOS program that seems to have lists of supported devices for most of their old programmers, along some "footnotes". (w54_pgm.exe looks like it MAYBE a newer version of wallchrt.exe) Family/pinout codes can be found in files like: device lists\29_fpo.txt - 2900 device lists\,archive\s1000.txt - Series 1000 device lists\,archive\unipak.txt - Unipak device lists\,archive\series22.txt - Series 22 device lists\,archive\logicpak.txt - Logicpak etc. Also look at device lists\,archive\README device lists\,archive\README old.html device lists\,archive\README.html for some more information on these files Regards, --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://www.best.com/~dcoward/analog =========================================

25 years, 1 month

Another Amiga question

by healyzh＠aracnet.com

> The problem was termination. I opened it up again today and > sure enough, the previous owner had removed the terminating resistor > packs from the mainboard. It worked fine like this under the 2.X > ROMs but once the 3.1 ROMs went in it began having problems. Once I Cool! How about letting us know what you think of Amiga OS 3.9 once you get it loaded! I'm especially interested in the networking side of it. I don't suppose you've got a graphics card or network card in the system? Hmmm, I've now got some room under my main computer desk, so I could potentially fit the A3000 I've got stuffed into a Tower case under there, or de-tower it and set it up. I'd like to get it back up and running, but the question always seems to be, what am I going to do with it. Zane

25 years, 1 month

Light Pens ...

by pete＠dunnington.u-net.com

On Jul 17, 19:17, Tony Duell wrote: > [Lightpen over dark screen] > If that's the article I am thinking of, they made a mistake and suggested > the device you needed was the plain phototransistor. The next month they > publised a correction that said you needed the phototransistor + schmitt > trigger Sweet-Spot. Yes, but the schmitt-triggered one has a different problem -- it's too slow! It's a long time ago, and the articles and my notes are buried near the bottom of a heap of other stuff, but I seem to remember that the frequency response of the schmitt device was quite low. I didn't use it in the end; I built a custom amplifier with the front end in the pen tube. > > brightness was set so that black was *just* not visible, a suitably > > Yes, but as you imply, that's not truely a dark screen :-)... > > > adjusted lightpen on a short-persistence monitor could detect dark pixels. > > It was, however, *much* easier with lit pixels. > > And the adjustments (monitor brightness, light pen sensitivity/threshold) > are _very_ touchy! Indeed. If you're not careful, the detector that can "see" the spot on a "dark" screen gets dazzled by a lit pixel, or fooled if you tilt the pen so ambient light leaks past the tip. I gave it up. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

Light Pens ...

by pete＠dunnington.u-net.com

On Jul 16, 14:01, Sellam Ismail wrote: > Ok, my mind is still blown. How does a light-pen drawing program work > then? (Or is a light-pen drawing program not possible?) It works by doing what Chuck described (flashing a frame or a line) or as Megan described (using a target). I've seen it done both ways. I've never seen a commercial lightpen do what I did, using the low light from "black" (which isn't quite black) to trigger a sensitive detector -- a detector that sensitive is just too prone to being swamped by ambient light, I discovered. It was fine when the pen was pressed against the tube, but goes haywire when lifted away. I fitted a touch switch to mine to prevent that, but it still took the amplifier a moment to settle. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

Quadra 650 for $6.95 at "junkyard" attn: Richard Erlacher

by jpero＠sympatico.ca

> From: jpero(a)sympatico.ca > To: "Richard Erlacher" <edick(a)idcomm.com> > Date: Tue, 17 Jul 2001 18:13:28 +0000 > MIME-Version: 1.0 > Content-type: text/plain; charset=US-ASCII > Content-transfer-encoding: 7BIT > Subject: Re: Apple II for into to microprocessors > Priority: normal > In-reply-to: <002601c10f0a$2e6efdc0$9cc762d8(a)idcomm.com> > X-mailer: Pegasus Mail for Win32 (v2.54) > > > From: "Richard Erlacher" <edick(a)idcomm.com> > > To: <classiccmp(a)classiccmp.org> > > Subject: Re: Apple II for into to microprocessors > > Date: Tue, 17 Jul 2001 15:47:41 -0600 > > Organization: Erlacher Associates > > Reply-to: classiccmp(a)classiccmp.org > > BTW, I left a Quadra 650(?) costing $6.95 sitting there on account of this, not > that I wanted it, but it might have had useable parts. Dick, 7 dollars is worth getting that Mac for parts, 7 dollars plus shipping on the parts stripped from that Mac is what I can use. Quadra use full 68040, this 650 is blazing 33MHz. Cheers, Wizard PS: your email address bounced so this email is in public for anyone to see and I wish to contact you on this Quadra 650.

25 years, 1 month

repairing a DEC VT420

by gunther＠aurora.regenstrief.org

Hi, I bought a VT420 from a neighborhood garage sale ($5) that turned out not to work. Turn it on and I saw nothing happening. Only heared a faint "fip ... fip ... fip ..." kind of sound, you know that one "fip" when a screen comes on, just a little softer and repeated about 1 per second and no screen came on. Opened the box and powered on, the kathode in the tube didn't seem to glow. More inspection turned out that what seems like a ceramic capacitor was exploded or fried, all black and crummy, impossible for me to identify its specs. Can someone help me out with a schematics or databook or something? Again the terminal is DEC VT420 the blown-up capacitor is C621. What kind of collateral damage do I have to expect? I mean, does a fried capacitor normaly cut short? Here are some hints: - That C621 is in close proximity to C617, another sizeable capacitor. However there are no marks left on that one after cleaning the explosion site :-) - A diode D603 is also in that neighborhood, doesn't look bad, but I didn't test it yet. - I do see suspicious brown-coloration in an area farther off around D607 and R649. I wouldn't be surprized if R649 was fried. - R650 is in next to R649 but looks fine to me, though I didn't test it. It's always a problem to test components while in the circuit, don't know what I should expect. I appreciate any help. thanks, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

25 years, 1 month

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test-drb July 2001