test-drb September 2011

test-drb@ccmp.vtda.org

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looking for a Tek Prism 3002

by chrism3667＠yahoo.com

contact me. off list. thanks.

13 years, 3 months

DEC GIGI - Power Supply Replacement Success

by mark＠wickensonline.co.uk

Folks, Always nice when you've got a piece of good news ;) I replaced all the mains filtering capacitors in the original DEC GIGI power supply when one blew only to find that the power supply lasted another 10 minutes before losing power completely. At this point I decided given the relatively standard power outputs (5V 3A, 12V 1A, -12V 0.3A) I would source a replacement power supply. This arrived and was installed yesterday. It I guess unsurprisingly is substantially smaller and lighter than the original. The original cooling fan was removed as it was basically transformed directly from either the mains directly or one of the windings of the main transformer. I used the fan out of an external SCSI enclosure as a replacement, although I look to source a high quality brand new one. To me it looks like the fan primarily is for cooling the PSU only - given the fan location and the location of the plate that the PSU is mounted on it looks unlikely that the main circuit board would benefit much. The machine now happily powers on and I had an hours playtime last night with the local BASIC monitor. The GIGI now only exhibits one minor trait, and I'm yet to determine whether this is down to the LCD panel it is driving being at limits or whether there is a slight issue with the video generation circuit. Once in a while, every couple of minutes or so the LCD looses sync and the picture is dropped. This only happens for a fraction of a second, then the picture is restored as was. If anyone has any ideas I'm all ears. For reference I'm using a Iiyama AS4637UT, an old but extremely capable 18.1" 1280x1024 native panel. If anyone is interested I can post the horizontal and vertical frequencies it is being driven at. I plan on scanning the GIGI brochures I have for inclusion on bitsavers shortly. Regards, Mark

13 years, 3 months

EDA Electronics cards??? got a bag of them duno what they're from

by tshoppa＠wmata.com

The form factor matches up to the Vector 22/44 0.156" card edge physical form factor standard. Which doesn't narrow it down at all. Millions of custom industrial systems (some micro-based, but most not) were built using these plugboard style systems from the 60's through the 80's. Vector sold card cages and proto cards; the one-offs usually used the proto cards but something that was made in small to medium quantity might have used a Vector card cage (perhaps hand-wired) and etched PCB's. Sometimes the backplane was a simple bus in the computer sense but usually not. Looking at the chip logos and mix of analog/digital I'd suggest this is from the late 70's/early 80's and is some kind of DAQ front end or perhaps digital-math servo system. You can narrow the date range down from looking at the date codes on the chips.

13 years, 3 months

New rsync mirroring at trailing-edge.com

by vintagecoder＠aol.com

Yeah, that's true. What you can buy today is gigantic compared to what was available not so long ago but now everything is digitized so stuff we used to keep on paper and video tape or 8 tracks and film negatives is now on the hard drive. There's never enough room any more and there probably won't ever be again. ------Original Message------ From: Chuck Guzis Sender: cctalk-bounces at classiccmp.org To: General Discussion: On-Topic and Off-Topic Posts ReplyTo: General Discussion: On-Topic and Off-Topic Posts Subject: Re: New rsync mirroring at trailing-edge.com Sent: 20 Sep 2011 16:45 On 20 Sep 2011 at 16:20, Vintage Coder wrote: > You guys and your extravagances! > > I couldn't mirror it on one of my Sun boxes, the biggest drive I have > is 73G... Well, I suppose it depends on your usage. To me, an 80G drive is huge; I can't generate relevant content fast enough. To someone who stores movies on their hard drive, it's unbelievably small. My friend who's a photographer keeps buying TB drives to hold his work. --Chuck

13 years, 3 months

EDA Electronics cards??? got a bag of them duno what they're from

by tdk.knight＠gmail.com

anyone seen these befor? http://img217.imageshack.us/img217/7302/cardsd.jpg says EDA Electronics Ottawa Canada on them some have analog inputs of some sort caps ect they randomly showed up at the local hacker space no one know what they are or where they came from i see some have analog inputs http://img834.imageshack.us/img834/4422/118kog.jpg

13 years, 3 months

Installing OpenVMS Software

by cool1＠thecoolbears.org

I have a VAX that I like to play around with. I don't know VMS very well, and it's fun to learn new (well ok, maybe VMS is old now) things. There's an application that I would like to compile, but it depends on bison. I'm trying to compile bison, but that process seems to depend on MMS. I'm assuming that MMS works like "make makefile" and you do "mms whatever.mms" to make the app. MMS doesn't seem to be installed, so I registered and loaded the license. The SHOW LICENSE command says that the license is there. Now I need to install the application. I have the Montagar CD mounted and I can browse it's tree structure, but I can't find the kit that includes MMS. I thought maybe the C language kit and I tried: @SYS$UPDATE:VMSINSTAL CC064 DUA2:[CC064.KIT] ...which reinstalled C, but no joy on MMS. Any suggestions?

13 years, 3 months

HP wish list

by mloewen＠cpumagic.scol.pa.us

I'm still looking for some period-appropriate peripherals for my HP 2109E system: 7906 disc drive w/13037x controller, or 7906H (HP-IB) 7970E tape drive w/13183A contoller, or 7970E w/HP-IB controller I'm in central PA so it would be awfully nice to find something within reasonable driving distance. :-) If you have any leads on any of these, please let me know off-list. Mike Loewen mloewen at cpumagic.scol.pa.us Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/

13 years, 3 months

IBM Model M keyboard repair tip

by vintagecoder＠aol.com

The guy is a good seller but he's also a good businessman. He understands the supply and demand principle. ------Original Message------ From: Steven Hirsch Sender: cctalk-bounces at classiccmp.org To: General Discussion: On-Topic Posts Only ReplyTo: General Discussion: On-Topic and Off-Topic Posts Subject: Re: IBM Model M keyboard repair tip Sent: 21 Sep 2011 12:01 On Tue, 20 Sep 2011, David Griffith wrote: > That was me. I'm getting some screws from the guy who runs > clickeykeyboards.com. Thanks for the offer. Interesting site, but a little silly in that nearly everything is "SOLD" and there's no apparent way to filter for available units. Or, am I missing something? (Glad I have a couple dozen Model Ms stacked in the storage unit) Steve --

13 years, 3 months

seeking ExperLisp by Expertelligence for Macintosh

by nigel.d.williams＠gmail.com

I used this in the 1980s and would like to get a replacement copy for the one I lost - thanks. Last year on eBay someone purchased a large collection of Macintosh diskettes, one of which was an ExperLisp diskette, so if that person is a cctalk-er I would appreciate a reply. It was released for the Mac 512K and later Macintosh. Some details here: http://www.macmod.com/articles/mactech/Vol.01/01.12/Tic-Tac-Toe/index.html http://www.mactech.com/articles/mactech/Vol.01/01.07/LispGraphics/index.html

13 years, 3 months

DEC Computer Lab workbook

by robertfantinatto＠rogers.com

Hello, I have a DEC H-500 computer lab and there was some discussion on this mailing list back in 2005 about posting a pdf of the workbook...did anyone ever get around to doing this?? I would really appreciate a copy of it... Many thanks, Rob Fantinatto

13 years, 3 months

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test-drb September 2011