test-drb June 2018

test-drb@ccmp.vtda.org

106 participants
89 discussions

Which Operating System for my DCC-116 E / Entrex 480 / Nixdorf 620 / Data General Nova 1200 clone ?

by cube1＠charter.net

On 10/4/2017 3:33 PM, Dominique Carlier via cctech wrote: > Hi all > > I start here another topic concerning my research about a new Operating > System for my freshly restored DCC-116 E. > > http://www.zeltrax.com/classiccmp_forum/second_boot/04.jpg > http://www.zeltrax.com/classiccmp_forum/second_boot/02.jpg > > I originally intended to install RDOS on my machine but it seems very > difficult to find the files needed to make a system installation tape. > FIRST: If you have drawings for the DCC, please let me know. I have two of them (long in storage in the house, but they ran when I pulled them from their Unitote/Regitel rack a couple of *decades* ago. There is an RDOS - disk images, available at: http://simh.trailing-edge.com/software.html (Top entry in the list) It is about a 2.5MB disk image. I suggest that you might download SimH and that image, configure SimH as a straight Nova (rather than a /3 or /4) and see if it runs that image OK. If so, there you go! Beyond that, I *might* be able to help, but it will depend on what the status of copyright is on what I have, and whether your system can even run what I do have. I am looking into the copyright part of it - that may take a week or two. (This is something I needed to to anyway). In the meantime: Do you have a way to *write* a tape image? I have an AWS format image of an RDOS starter system. Note, however, that the label on the RDOS starter image I have suggests it may only be appropriate for a NOVA 3 or NOVA 4, so it might not run on your system. So, I'd have to take some time to boot it and try and set up a system for a straight Nova. As this would take several hours, I'm not keen on doing that unless you know that one from SimH will not work for you. I also have some OS and compiler DG floppy images, if you have a DG-compatible floppy setup. Several different operating systems there. Same issue: one would have to see how many are compatible with a straight Nova. I have images of the floppies. Diagnostics for DG systems are notoriously difficult to find. I have a few, in listing format. JRJ

5 years, 6 months

Thicknet/10base5 Test Segment: The Cable is In!

by systems.glitch＠gmail.com

All, A few months ago, I mentioned one of my suppliers had Belden 89880 thicknet Ethernet cable. Well, last week I finally made it down to his warehouse and picked it up! The final bits for a test segment came in today, so I set up a little link between my SPARCstation 10 and DEChub 90: https://imgur.com/a/GDUR36j Anyone interested in cable can email me directly (please change the subject line, it'll get binned into my cctalk folder otherwise). I can provide any level of "kit" from just the cable to fully ready to go. I do have a very few NOS Cabletron ST-500-01 transceiver/non-intrusive tap kits as well. Thanks, Jonathan

5 years, 7 months

IBM junk

by cctalk＠emailtoilet.com

Collected stuff for over 10 years. Moving from 2300 sq. ft. to 1400. It had to go. Praise the computer gods I found someone that wanted it all. 115 boxes of manuals and documents. 26 boxes of coffee mugs 73 703 boxes of stuff. 106 loose big items. Filled the floor space of a 26' truck. It can be viewed at http://www.ibmjunkman.com/junk/ Best viewed on a PC with decent speed connection. Sample stuff: 360 Mod 20 panel, mod 30 panel, mod 65 panel, s/3 panel. Disk pack and HDA up the ying yang. 3850 data carts, 2321 data cell, 7340 Hypertape cartridge, a Russian equivalent, desktop chachki (tchotchke), 360 mod 70 desktop model used in 1964 World's Fair, etc, etc.

5 years, 9 months

radar history

by couryhouse＠aol.com

https://www.bing.com/videos/search?q=castles+in+the+sky+radar&PC=EMMX03&ref… great saw,this on the 40 inch... Sent from AOL Mobile Mail

5 years, 9 months

Look at this on eBay

by lyokoboy0＠gmail.com

A couple of boards from an unknown computer came in and i am trying to get them to a good home and not be scrapped. I was curious if anyone here knew what they were out of. They were in the box with some small core memory boards. If someone here wants to make an offer ill gladly take the ebay listing down. eBay http://www.ebay.com/itm/273330177351

5 years, 9 months

More exhibits and volunteers needed for VCF West

by cctalk＠snarc.net

It's almost time for Vintage Computer Festival West XIII! The show is August 4-5 at the Computer History Museum in Mountain View, California. You?ll find dozens of hands-on exhibits, incredible lectures, a huge consignment sale, and much more -- plus the museum's own tours and hands-on demos. There is still time to register your exhibit, but it's tight! Go to http://vcfed.org/wp/festivals/vintage-computer-festival-west/vcf-west-exhib… ASAP to sign up. We also need more volunteers! Email erik at vcfed.org if you can be a helper. ________________________________ Evan Koblentz, director Vintage Computer Federation a 501(c)3 educational non-profit evan at vcfed.org (646) 546-9999 www.vcfed.org facebook.com/vcfederation twitter.com/vcfederation

5 years, 9 months

Thicknet/10base5 Test Segment: The Cable is In!

by jnc＠mercury.lcs.mit.edu

> From: Paul Koning > I believe the original concept was just a probe that would poke through > the cable to contact the center connector. The drill came because the > cable was too tough to penetrate without it. No, the original 3 Mbit Ethernet also used a 'drill' (actually, a cylindrical cutter which screwed into the thread of the tap housing; threading which was then used to screw in the transceiver). Anyway, there has to be a hole cut _through_ the cylindrical ground layer (foil, or woven wire) around the center conductor. If you just stuck a probe into the cable to the center conductor, it would short it out. Noel

5 years, 9 months

ok I have to ask...confirm direction of GRANT continuity cards please

by spacewar＠gmail.com

On Thu, Jun 28, 2018 at 8:26 PM, Bill Degnan via cctech < cctech at classiccmp.org> wrote: > I have always pointed my grant continuity cards in the same direction as a > NPG card, with the traces to the left/facing the last slot of the > backplane. I am 99% sure this is right but I was asked and I just want to > be 100%...am I right? In particular the traces point away from the CPU > cards, at least on an 11/40 and 11/05. Please just tell me I am not losing > it. > If your system works properly, the grant cards are in the right way. If the grant cards are installed wrong, or missing, it will cause serious problems, and you're unlikely to be able to boot anything.

5 years, 9 months

Thicknet/10base5 Test Segment: The Cable is In!

by jnc＠mercury.lcs.mit.edu

> From: Eric Smith > If you _must_ run a long -232 cable 'Don't!' That's what -422 is for. :-) Noel

5 years, 9 months

IBM junk

by donald＠donaldwhittemore.com

The whole collection went to Computer Museum of America in Roswell, GA https://computermuseumofamerica.org/

5 years, 9 months

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test-drb June 2018