test-drb December 2011

test-drb@ccmp.vtda.org

194 participants
247 discussions

tools for reverse engineering schematics from boards?

by legalize＠xmission.com

I've got a bunch of Nuclear Data peripheral circuit boards that I need to reverse engineer. They are simple circuit boards with all the tracings visible (i.e. no internal layers) and the parts are all 7400 series logic in standard DIP packaging. If I were to do this manually, I would take high resolution photographs of both sides of the board. From the photographs, I would try to recreate engineering drawings: part placement and circuit topology. I'm wondering what kind of tools are out there that would assist in this. Could I process the photos to extract the topology of the printed circuit traces? Can I correlate this with image recognition of the part packages and combine them to product a netlist? I'd appreciate hearing any experiences from others that have reverse engineered circuitry. -- "The Direct3D Graphics Pipeline" -- DirectX 9 version available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

12 years, 5 months

Word Perfect 5.1 Documents?

by brian＠quarterbyte.com

I make the bulk of my living converting documents in WordPerfect 5 and up, IBM DCF and Bookmaster, and Interleaf to current formats. Is anyone interested in hearing a bit about the problems using current word processors to import the old formats? It's sort of on-topic, as these are vintage products, even if still in use, but I won't bother the list if it's not of interest. Brian =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _| _| _| Brian Knittel _| _| _| Quarterbyte Systems, Inc. _| _| _| Tel: 1-510-559-7930 _| _| _| http://www.quarterbyte.com

12 years, 5 months

Computer Graphics Museum sprawl 2

by legalize＠xmission.com

Here are photos updated with the state of things as of tonight: <http://manx.classiccmp.org/collections/cgm/sprawl2/index.html> Progress made: - SGI PIs loaded into shelving - SGI Indigo^2s loaded into shelving - Remaining HP equipment shelved - Beehive terminals shelved -- "The Direct3D Graphics Pipeline" -- DirectX 9 version available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

12 years, 5 months

Word Perfect 5.1 Documents?

by a50mhzham＠gmail.com

At 05:57 PM 12/6/2011, you wrote: >from something I dug up > >"OpenOffice Writer can read WordPerfect 5.1 documents, as can Microsoft >Word" My OpenOffice 3.3.0 doesn't explicitly say it will, but I think I've done it in the past, so I take your comment as confirming what I seem to recall. >see > >http://www.linuxquestions.org/questions/linux-software-2/reading-wordsatar-… >On Tue, Dec 6, 2011 at 3:38 PM, Zane H. Healy <healyzh at aracnet.com> wrote: > > > Out of curiosity, what is there in the way of modern software that can > > read Word Perfect 5.1 (probably some 5.2 as well) for DOS documents? The > > good news is that I retrieved all these files at some point in the past > > from the 3.5" floppy they were on. :-) 764 . [Stupidity] Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. --Albert Einstein NEW: a50mhzham at gmail.com ? N9QQB (amateur radio) "HEY YOU" (loud shouting) ? Second Tops (Set Dancing) ? FIND ME ON FACEBOOK 43? 7' 17.2" N by 88? 6' 28.9" W ? Elevation 815' ? Grid Square EN53wc LAN/Telecom Analyst ? Open-source Dude ? Musician ? Registered Linux User 385531

12 years, 5 months

Velleman PCS64i O-scope Software?

by mbbrutman-cctalk＠brutman.com

I'm going to plunge into the world of slightly more advanced electronics, and one of my teaching tools is a Velleman PCS64i that I just inherited. It's an o-scope front end that interfaces to a PC to provide the display. I'm looking for the DOS software - it is not available on Velleman's web site any more. I found the Windows software, but I'd rather keep it simple for now. If you have the DOS software please let me know .. Thanks, Mike

12 years, 5 months

wanted: raised flooring for cheap

by vintagecoder＠aol.com

Bus and tag cables are huge.

12 years, 5 months

wanted: raised flooring for cheap

by vintagecoder＠aol.com

The setups I have seen require a lot of square footage. You have printers, tape drives, and big DASD farms connecting to controllers and communications controllers and finally the mainframe which may itself be a complex consisting of more than one physical box. I have not seen a machine room that wasn't all raised floor. I don't know that a small setup exists with the bus and tag technology but that was years ago. The new stuff is smaller and also doesn't need raised floor. Seems like it's probably an either or situation. When you need raised floor you need a lot. When you don't, you don't. ------Original Message------ From: ben Sender: cctalk-bounces at classiccmp.org To: cctalk at classiccmp.org ReplyTo: General Discussion: On-Topic and Off-Topic Posts Subject: Re: wanted: raised flooring for cheap Sent: 7 Dec 2011 18:26 On 12/7/2011 11:10 AM, Vintage Coder wrote: > Bus and tag cables are huge. The other problem with raised flooring is who's floor are you on? With a small system, could a raised island be built, with the computing equipment raised say a foot or so, with just false floor between the equipment. Ben.

12 years, 5 months

Word Perfect 5.1 Documents?

by maurice.smulders＠gmail.com

http://www.columbia.edu/~em36/wpdos/wptoword.html Lots of options it looks like... OpenOffice / LibreOffice is an opensource way of doing it... Maurice On Tue, Dec 6, 2011 at 4:38 PM, Zane H. Healy <healyzh at aracnet.com> wrote: > Out of curiosity, what is there in the way of modern software that can > read Word Perfect 5.1 (probably some 5.2 as well) for DOS documents? The > good news is that I retrieved all these files at some point in the past > from the 3.5" floppy they were on. :-) > > Zane-- >

12 years, 5 months

Word Perfect 5.1 Documents?

by mokuba＠gmail.com

Well, i'll check into that once i get done rebuilding my router! :) I'll image them and throw them online (my router, coincidentally, is the only machine with a 3.5" floppy drive :> ) On Wed, Dec 7, 2011 at 12:22 AM, Zane H. Healy <healyzh at aracnet.com> wrote: > At 11:42 PM -0500 12/6/11, Gary Sparkes wrote: >> >> Heck, I have a copy of WP 5.1 for dos sitting unused in a box. Perhaps >> a copy of that will be easy to use for conversion? :) > > > If the disks are readable, I have WP 4.2, 5.1, and 5.2 for DOS. I should > also have a copy of WP for Windows 6.0, and WP for Mac around here. I used > to be big into WP before I moved to the Mac and moved to Word (hated WP for > Mac). The trick will be reviving a system, hopefully one with a version on > the HD still runs. Wasn't expecting 4.2 data, or it to be such a pain. :-( > > > Zane > > > > -- > | Zane H. Healy | UNIX Systems Administrator | > | healyzh at aracnet.com | OpenVMS Enthusiast | > | | Photographer | > +----------------------------------+----------------------------+ > | My flickr Photostream | > | http://www.flickr.com/photos/33848088 at N03/ | -- Gary G. Sparkes Jr. KB3HAG

12 years, 5 months

how to: automatically combine images into a larger mosaic

by legalize＠xmission.com

I finally found a tutorial and software to combine smaller scans of large documents into a single mosaic of the larger sheet. <http://hugin.sourceforge.net/tutorials/scans/en.shtml> gives a nice tutorial of how to run hugin panorama tools to generate the mosaic. You must change some parameters from the default and this tutorial explains which of the many parameters you must change. Here are some results I got from using this technique: <http://user.xmission.com/~legalize/tmp/calcomp-schematic.png> <http://user.xmission.com/~legalize/tmp/aesthedes-keyboard.png> -- "The Direct3D Graphics Pipeline" -- DirectX 9 version available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

12 years, 5 months

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test-drb December 2011