test-drb

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101090 discussions

by jwsmail＠jwsss.com

I'm not sure I've heard of Caldisk, though it was in Anaheim apparently. Maybe a Calcomp brand or spinoff? Here is an ad also for the Matchdisk operation who pasted their info all over the drive. https://books.google.com/books?id=iD4EAAAAMBAJ&pg=PT33&lpg=PT33&dq=caldisk+… 8" double sided drive, 479 bucks in the 1981 Infoworld ad. CalDisk-142M-17652-111-Pragmatix-I-8-Inch-Internal-Floppy-Disk-Drive-VINTAGE/ http://www.ebay.com/itm/192031318942 Also I'm wondering if the "Matchmakers match of the month" system which they can't tell you about is in fact NoName systems generic CPM system. I never heard of this operation in all the things going on in that time frame (Matchmaker) but they seemed to be marketing to people who were less skilled at fitting things like third party floppy drives to systems, yet this offering is clearly for someone with advanced skills at doing so. thanks Jim

8 years, 3 months

Close encounters of the CADR kind

by jnc＠mercury.lcs.mit.edu

> From: Alfred M. Szmidt > The closest to a picture of a CADR that I have seen The picture posted earlier of the machine in the MIT Archives: http://questier.com/Photos/200907_USA/20090731-150406_USA_Massachusetts_MIT… is _definitely_ a CADR. Noel

8 years, 3 months

SunoS 4.1.4 and Open Windows 3 on an IPX?

by mattislind＠gmail.com

I have installed SunoS 4.1.4 on a an IPX and then tried to start Open Windows 3 from the command line. I get a garbled screen that looks like this: http://i.imgur.com/jWcbqYO.jpg?1 It looks like there is a mismatch between what resolution Open WIndows is using and how the frame buffer is configured. My screen reports that the framebuffer is outputting 1280x1024 at 76Hz. How can this be adjusted? I have read this manual: http://bitsavers.informatik.uni-stuttgart.de/pdf/sun/openWindows/Open_Windo… and various FAQs trying to modify EEPROM settings etc but it won't work. I understand that the 13W3 cable includes a number of sense lines so that the framebuffer can adjust to the monitor used. I haven't checked how 13W3 to VGA cable is configured but I assume it tells the FB to use 1280x1024 at 76Hz since it is what the screen reports. On the other hand, when SunOS boots it finds the cgsix0 and reports that the resolution is 1000x1022!? Any idea on how to set different resolutions in Open Windows? What I am not understanding here? The word resolution is not even mentioned in the Installation manual for Open Windows above... /Mattis

8 years, 3 months

Close encounters of the CADR kind

by ams＠gnu.org

Does anyone have close up pictures of the MIT CADR? Boards, the maintaince indicator display, anything interesting and close up. LM-2 and and Lambda would also be of curiosity.

8 years, 3 months

Microscope for Soldering and Inspection Work

by kspt.tor＠gmail.com

On 16 January 2017 at 00:51, Jon Elson <elson at pico-systems.com> wrote: > Also, flux smoke gets all over the lenses. That is one downside on my > Olympus, the bottom is not sealed. I made up some card stock and glued it > in place to try to prevent the smoke getting inside. But, it still gets on > the lenses requiring periodic cleaning. I use a fan and a flexible tube (for easy positioning) to suck the smoke away. It removes most of the smoke (from my nose as well).

8 years, 3 months

Microscope for Soldering and Inspection Work

by COURYHOUSE＠aol.com

OK! here goes...well the B and L stereo zoom has a screw in place over the optics underneath... it is for attaching close up lenses or reduction in power lenses etc. you can also screw in a clear cover. the cover will also screw in our the aux lens if my brain remembers right. Many other stereo microscopes also have this provision to add a clear filter or aux booster or de-creaser in power lens. always best to keep active optics covered with some protection to save from solder splash, sharp things sticking up from scratching etc etc... Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 1/14/2017 10:52:08 A.M. US Mountain Standard Time, cclist at sydex.com writes: On 01/14/2017 09:36 AM, COURYHOUSE at aol.com wrote: > Be sure your stereo-zoom has a cover thing screwed into the > front of it. always good to protect the active optics. > > We have a rework station with a sliding X Y table on it.... and a > scope mounted on it... but... my hands are not steady as when > young..( need to find technology to assist with that!) Ditto on the second paragraph. But I'm not sure what you mean by a "cover thing". Care to elaborate? Thanks, Chuck

8 years, 3 months

dual-wide dec extender cards

by aek＠bitsavers.org

fyi more common, but it has the correct depth connector on it thought I'd post since the description isn't at all obvious what it is http://www.ebay.com/itm/361530436227 http://www.ebay.com/itm/361530436651

8 years, 3 months

DEC G500 Module

by michael.99.thompson＠gmail.com

We are still fiddling with the TU56 drive on the PDP-12 at the RICM. We followed the head skew procedure, but it calls for a G500 module to amplify the signals from the tape head. We cobbled together a pair if G888 modules as the amplifier, and it worked OK. The G500 schematics are in the skew procedure so we could make one, but we don't know anything about the physical layout. Has anyone ever seen a DEC G500 module? -- Michael Thompson

8 years, 3 months

Need serial cabe for pdp 11/34 M7856

by lyokoboy0＠gmail.com

The cable that came with my 11/34 is for current loop, i need a cable that is wired for serial. If no one has the cable, i could make one myself, i just need the 40 pin connector that goes on the cable. I have been unable to find the connector. Oddly ebay appears to have the side of the connector that goes on the M7856 board itself, but i need the other end, that goes on the wire. Any help is much appreciated. Lots of setbacks with this thing. I just want to see it running already. --Devin

8 years, 3 months

What's the rarest or most unusual computer-related item do you own?

by jnc＠mercury.lcs.mit.edu

> From: Eric Smith > I have a computer of the type that Gates and Allen used for that early > development. :-) > I don't have it running, though. Really? Which model processor; KA, KI, KL? Noel PS: Apparently Gates and Allen at one point rented time on a commercial service in Boston to do development; anyone know who that was, and what machine/OS is was?

8 years, 3 months

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