test-drb April 2005

test-drb@ccmp.vtda.org

269 participants
730 discussions

by lproven＠gmail.com

A person in Fulham, London, UK, is trying to give away 3 Sun3 workstations & not having much interest. Anyone fancy one? Mail them directly. I've talked to them & they asked me to plug the machines if I could. I'd love one myself but I have no space for them. :?( From: Kake L Pugh <kake at earth.li> Date: Apr 4, 2005 11:58 AM Subject: [FreeCycleLondon] OFFERED: Sun 3 computers, SW6 To: freecyclelondon at yahoogroups.com Note: these are old computers, and they are large. You will need a car. Collect before Sunday 17th April, please. Take one, two, or all three! We're in SW6, just off Fulham Palace Road. Two of the machines are diskless, but it's straightforward to boot them over the network, and I'd be happy to lend a hand to get them to do so. The enormous monitors mean they make excellent X terminals with nice big text. You can boot them straight into X, or you can run an OS on them in diskless mode. I've run SunOS 4 and NetBSD on them; I believe it's now possible to run linux as well. snack has a disk with SunOS installed, so doesn't need to boot over the network. It has a hybrid X server which supports the NeWS windowing system. stinky: Sun 3/50, 4MB RAM, 16MHz 68020 CPU with floating-point coprocessor pizzabox case 10base2 ethernet Huge 1152x900 monochrome monitor snipe: Sun 3/140, 16MHz 68020 with floating-point coprocessor. 3-VME-slot case: can either sit flat with a monitor on top, or stand freely. Huge 1152x900 monochrome monitor AUI network (but I can throw in an AUI->10base2 transceiver free) This machine has no fan! It's very quiet as a result. snack: Sun 3/60, 20MHz 68020 with floating-point coprocessor. pizzabox case colour framebuffer and colour monitor 10base2 ethernet ~100MB disk drive with SunOS and OpenWindows installed See http://www.sunstuff.org/hardware/systems/sun3/ for more details. -- Liam Proven Home: http://welcome.to/liamsweb * Blog: http://lproven.livejournal.com AOL, Yahoo UK: liamproven * ICQ: 73187508 * MSN: lproven at hotmail.com

20 years, 1 month

TM11 BP available

by quapla＠xs4all.nl

Anybody interested in a TM11 backplane? Comes with the cable board (M983). Free for the cost of shipping (from Holland) Ed

20 years, 1 month

NVRAM battery replacement

by pete＠dunnington.u-net.com

On Apr 8 2005, 22:57, Saquinn624 at aol.com wrote: > I pulled the coin-cell holder off of an old PC clone PC board and then > epoxied it to the top of the NVRAM- works well and will make future changes easy. > > Ethan- the DS1287 is the one used in SGIs (I2, Indy), isn't it? No, Indys have a Dallas DS1386-8K-150, but I imagine it can be dealt with in a similar way, though I think you can still get them from Maxim. SGI serial numbers are their MAC addresses, so you don't even need to make them up, just read them off the machine's label; also you can program the MAC address into a *blank* Dallas chip from the boot ROM prompt (at least on an Indy), so you don't need any fancy process. -- Pete Peter Turnbull Network Manager University of York

20 years, 1 month

old camera-accessory doc found

by mouse＠Rodents.Montreal.QC.CA

I happened across a little four-page user's guide for the "POLAROID PRINT COPIER Model 240". Based on the style of the thing, I feel quite sure it's on-topic. :) I have no particular reason to keep it; I know some people here are interested in old user's guides and the like, so I thought I'd see if anyone's interested in this one, even though it's not directly computer-related. It's quite short. I've scanned it (300dpi 24bpp); the scans are, for the moment, available on ftp.rodents.montreal.qc.ca in /mouse/misc/polaroid-copier-user-guide under the names page1.ppm through page8.ppm. For those who just want a quick look that doesn't need full information preserval, I've also scaled the scans down and converted them to jpegs, in page1.jpg through page8.jpg. For people who really want the rawest available scanner output, see the pages-?-?.ppm files. The colours look..weird; this appears to be an artifact of the scanner - something about exactly how the slight crinkles in the paper surface change the surface's slope, is my guess. The actual document is printed in black and red on white paper, with halftone grayscales printed in black. If anyone's interested in getting the original paper version, just let me know. As I say, I have no use for it myself. /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse at rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B

20 years, 1 month

More Classic Press

by jrkeys＠concentric.net

The May 2005 issue of mobile Technology To Go had a small write-up with pic's on the Cristie's Cyber auction and a section called "retro tech" talking about the Kaypro 2000.

20 years, 1 month

D.G. Nova update -- crapacitors strike again

by tomj＠wps.com

Well I identified the failure, fixed it, and the disk pack is formatting right now. Whew! Another crapacitor -- looks like a tantalum, but it's only .01uF, a dipped-looking bright blue axial part, about the size of a 1/8W resistor. I think these were discussed recently; not necessarily tants, but some short-lived process. Anyways, the problem cap was on the read/write amp board. The bad cap was on the -15V line. The shorted cap took out the 1-ohm, 1/4W series resistor on the logic board (very obvious once I looked at it; all the smoke what went out of it, and all the color-code bands went brown). There's only one chip (LM311) using -15, took that out, nope. Started following copper, removing caps, finally saw one blue cap that was... brown in the middle! Yup, shorted. I replaced the bad one, and all the lifted caps, with ceramic disks since I had 'em partly out anyways. Had to take the head assembly dust cover off, to get the head connectors plugged on, which mean clean-room again. Unnerving. Still running diags, but no errors so far. Man, there's hundreds of those little blue bastards in this machine. I hope future shorts are so benign. Gulp.

20 years, 2 months

Must-have PDP-11 accessory on eBay -- VINTAGE BUS GRANTOSAURUS REX

by wmaddox＠pacbell.net

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=5181545036… --Bill

20 years, 2 months

Switch Handle Pictures

by dwight.elvey＠amd.com

>From: "vrs" <vrs at msn.com> > >From: "Dwight K. Elvey" <dwight.elvey at amd.com> >> This is great. What are you using to make the molds? > >Well, I went into the local TAP Plastics, described what I wanted to do to >the nice saleslady, and ended up with these products: > >**Mold Making** >TAP Silicone RTV System, Side A and Side B. Side B comes in a couple of >color coded versions. I chose "TAP Silicone RTV Catalyst GREEN", which has >a 1 hour working time, and a 24 hour cure. This stuff is easy to work with, >and hardens to a rubbery consistency, very much what you want for >mold-making. It is white until you mix in the catalyst, which dyes it >green. > >**Casting** >Quick Cast TAP Casting Resin, Side A and Side B. This stuff hardens into a >stiff plastic, perfect for switch handles :-). Side A and Side B are clear, >but the result will be white after it cures. This color change makes it >more difficult to predict the effect of the colorants. This stuff has a >very short working time -- a few minutes. It is recommended to remove the >parts from the mold in an hour (don't know why; some kind of chemical >reaction with the mold is predicted, but I've never seen it). > >**Colorant** >TAP Premium Pigment, in yellow, brown, red, and blue. These are added in >small quantities to Side B of the resin, before side A is added. Only a >very small amount of the pigment will actually stir into side B (most of the >pigment just lays there, no matter how much you stir.) > >Hope that helps :-). More later... > > Vince Hi Vince Someone told me that it was a good idea to use PAM ( cooking spray ) as a mold release. This may help with issues of leaving it in the mold too long. Dwight

20 years, 2 months

AT&T 3B2s available in OK

by classiccmp＠vintage-computer.com

I got the following via email over the weekend: "I have three 3b2 machines grathering dust. This includes many loose-leaf binders of 3b stuff, and SCSI drives,also, many Tapes; some with Informix SE & SQL sofeware. I am not able to ship this equipment(you got'ta pick it up), but it's free. I am a retired electronics tech, who spends much time doing PC recording of VINYL's" Everything is in Oklahoma City, OK. Contact Raymond at raymondNOSPAM at NOSPAMnaturesong.com for more details, removing the obvious. Best of luck! -- Erik Klein www.vintage-computer.com www.vintage-computer.com/vcforum The Vintage Computer Forum

20 years, 2 months

Oscilloscope question

by dvcorbin＠optonline.net

> Are there any good web sites that > would give some basic info on "scopes for dummies" > or "scopes for beginners"? > 1) Turn on 'scope 2) Dwiddle random knobs till you see squiglly lines 3) Nod knowingly... ...has always worked for me. Seriously, at the low frequencies that the classics use it is ALMOST this simple. When you get above 50MHZ things start to get more interesting.

20 years, 2 months

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test-drb April 2005