test-drb April 2020

test-drb@ccmp.vtda.org

142 participants
114 discussions

by bill.gunshannon＠hotmail.com

I have been sorting thru a bunch of stuff in an effort to clean the place up (Aren't we all doing that now with all this time on our hands?) I found a backplane. It says Digital on it but does not have an H- number. I also don;t find it listed in any of the lists I can find on the web. It has 8 A-B slots and 4 C-D slots. the Four C-D are on the bottom half of the backplane. I am assuming it is 18 bit and the C-D were intended for things like the 2 board RL controller. Anybody familiar with this and able to identify it? Anybody interested in it? It should fit in a USPS Medium Flat Rate Box. bill

5 years

Fwd: ROLM CBX 8000 System Service Manual Vol. 2 Scans Released!

by rgalliett＠surewest.net

Hello. I have both, Rolm CBX System Service Manuals l and ll as well as a Release 8/8001 Student Maintenance Course binder. Are you interested in these??Thank youSent from my LG Phoenix 3, an AT&T 4G LTE smartphone

5 years

Scanning incomplete and updated documents

by aperry＠snowmoose.com

I recently received a bunch of hardware/software documents to scan. I am only roughly familiar with the systems covered by the docs. I have encountered a couple situations that I would like guidance on. 1. One document is a software installation manual in a loose leaf binder with other documents. It has a title page, tables of contents, etc., several chapters, and then it gets interesting. It has several appendix sections (starting at A), an index, then more appendix sections (starting at A as well), and then another index. The document title and its font match of the second set of appendix sections and second index matches the table of contents and chapters. The first set of appendix sections and index are a little different. The topics covered in the sets of appendix sections are not the same. Should I create two different pdfs with different appendix sections or create a single pdf with both sets? 2. One document is missing the title page and table of contents. Should the pdf just be what I have or should I create those pages for the pdf? Thanks, alan

5 years

ICL1501 Cobol manual available

by jos.dreesen＠greenmail.ch

Since you are all talking COBOL now : ftp://ftp.dreesen.ch/ICL1501 There is the manual for the early 70?s COBOL implementation for the ICL1501, a small 8K or 16K TTL based personal computer ( TTL based CPU, with 2x 74181 ALU and a 32x8 CRT display) Not the best of scans, but that alas reflects the material I have. Some other? doku on the ICL1501 is also included :? an operator guide and tape utilities user guide. I do have the tape with the COBOL itself, alas no way yet of gettig it on modern hardware. And if anyone has dokumentation on the ICl1503 or 1501/43, in particular the Diablo drive interface then I sure would like to see it ! Have the kontroller, but no documentation... Al, as always, feel free to add any and all to bitsavers. Jos

5 years

anybody have MOVIE.BYU?

by rdawson16＠hotmail.com

The famous Brigham Young University 3D graphics program, by Dr. Hank Christensen. I am looking for the fortran source, it should be 7 files: DISPLAY SECTION UTILITY TITLE COMPOSE UPDATE MOSAIC Any docs related too. Thanks for letting me beg. Randy

5 years

Core Memory Photo

by keith＠saracom.com

I have three others with the cover still on :) I want to make a clear plexiglass cover for them. Also have the driver boards. On 2020-04-15 13:00, cctech-request at classiccmp.org wrote: > Send cctech mailing list submissions to > cctech at classiccmp.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.classiccmp.org/mailman/listinfo/cctech > or, via email, send a message with subject or body 'help' to > cctech-request at classiccmp.org > > You can reach the person managing the list at > cctech-owner at classiccmp.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of cctech digest..." > > Today's Topics: > > 1. Re: Core Memory Photo (keith at saracom.com) > 2. Re: Core Memory Photo (Fred Cisin) > 3. Re: Core Memory Photo (Joshua Rice) > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 13 Apr 2020 13:05:03 -0400 > From: keith at saracom.com > To: cctech at classiccmp.org > Subject: Re: Core Memory Photo > Message-ID: <c39ba3b5e51779bd29b39938655c5a9c at saracom.com> > Content-Type: text/plain; charset=UTF-8; format=flowed > > "Ouch. Looks like that core took a serious hit." > > Yep it did. We ran the microscope into it at the lab. Ouch. Someone had > asked for a picture of core memory without the cover so I thought it > would do. > > ------------------------------ > > Message: 2 > Date: Tue, 14 Apr 2020 09:53:39 -0700 (PDT) > From: Fred Cisin <cisin at xenosoft.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: Re: Core Memory Photo > Message-ID: <Pine.LNX.4.64.2004140952460.8842 at shell.lmi.net> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > On Mon, 13 Apr 2020, keith--- via cctalk wrote: > >> "Ouch. Looks like that core took a serious hit." >> Yep it did. We ran the microscope into it at the lab. Ouch. Someone had >> asked for a picture of core memory without the cover so I thought it >> would do. > > It is beautiful! > > ------------------------------ > > Message: 3 > Date: Wed, 15 Apr 2020 10:09:38 +0100 > From: Joshua Rice <Rice43 at btinternet.com> > To: Fred Cisin <cisin at xenosoft.com>, "General Discussion: On-Topic and > Off-Topic Posts" <cctalk at classiccmp.org> > Subject: Re: Core Memory Photo > Message-ID: <353A7AE4-A147-4A06-9AFD-4A3398FABD1C at btinternet.com> > Content-Type: text/plain; charset=utf-8 > > Was beautiful. > > That?s pretty mangled now. > > On Apr 14, 2020, at 5:53 PM, Fred Cisin via cctalk <cctalk at classiccmp.org> wrote: > > On Mon, 13 Apr 2020, keith--- via cctalk wrote: "Ouch. Looks like that core took a serious hit." Yep it did. We ran the microscope into it at the lab. Ouch. Someone had > asked for a picture of core memory without the cover so I thought it > would do. > It is beautiful! End of cctech Digest, Vol 67, Issue 15 **************************************

5 years

State of New Jersey needs COBOL programmers

by jeffrey＠vcfed.org

https://josephsteinberg.com/covid-19-response-new-jersey-urgently-needs-cob… -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey at vcfed.org

5 years

Sun 3 and memory

by aperry＠snowmoose.com

Hi everyone, Update on the barn-find Sun 3/260 that I have been restoring and was supposed to exhibit at VCF PNW until the show was cancelled for some odd reason. The system had been failing to get through self-test because, in the memory tests, bit 13 was always set, whether intended or not. I borrowed a couple Sun 501-1102 boards (8M ECC memory for VME) and one of them passes the self-tests and, if I had a bootable device, the system is now ready to try that. But my question here is about Sun 3 memory. Sun part 501-1102 is described as Sun 3/2xx, 3/4xx, and 4/2xx memory (The Sun System Handbook does not list it as 3/4xx memory). The memory board that worked is tagged 501-1102 and was described as memory to go along with a Sun 3/160 CPU board. I was loaned both boards in case the problem was the backplane. But the System Handbook does not list that memory as an option for that CPU. Does anyone here know whether a 501-1102 memory board be used with a 3/160 CPU? Does anyone here know whether Sun 3/260 schematics are available anywhere like the 3/160 and 3/60 ones are? I would like to give repairing the memory board that came with the 260 a shot, since that is a better story when I exhibit it and the memory board that I have that works now is a loaner. Finally, will a SD2SCSI (configured as 2 Sun0424 drives), Archive 150M QIC drive, or CD-ROM drive work on the 3/260 if I connect them up to the SCSI cable for the QIC-24 drive that the system came with? alan

5 years

VAXmate PSU

by robert.jarratt＠ntlworld.com

I have posted here a couple of times because I have a failed VAXmate PSU. I have just posted a little bit more information here: https://robs-old-computers.com/2020/03/28/further-analysis-of-the-vaxmate-h7 270-psu-failure/ with some scope traces and a greatly improved schematic. Although the schematic is likely to have errors still. Unfortunately, a stray scope probe ground lead blew the fuse so now I have to wait for a new fuse to arrive before I can continue work. I would really like to know if all the spiking I am seeing is to be expected, and any suggestions why it appears to be detecting an overcurrent? There do not appear to be any shorts on the secondary side, but that could be wrong of course. I don't know if a genuine short anywhere would cause it to trip the SCR quite so quickly (within 20ms of the switching transistor starting to switch). Any thoughts gratefully received. Thanks Rob

5 years

Old X11/Xt/Motif books

by barto＠kdbarto.org

Going through old books. If no one wants these then they go to the tip. Willing to deliver locally, split shipping over a distance. David O?Reilly Volume 4 X Toolkit Intrinsics for version 11 Volume 5 X Toolkit Intrinsics for X11 R4 and R5 Volume 4 X Toolkit Intrinsics (Motif Edition) For OSF/Motif 1.2 Volume 6A Motif Programming Manual for OSF/Motif 1.2 Volume 6B Motif Reference Manual For Motif 2.1 OSF Published OSF/Motif Programmer?s Reference Release 1.2 OSF/Motif Programmer?s Guide Release 1.2 OSF/Motif Style Guide Release 1.2 By Eric F. Johnson/Kevin Reichard X Window Applications Programming Advanced X Window Applications Programming Advanced X Window Applications Programming Second Edition (Missing CD) Power Programming Motif Second Edition (1.2)

5 years

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test-drb April 2020