test-drb March 2018

test-drb@ccmp.vtda.org

158 participants
173 discussions

PDP-11 floating CSRs: 760010, or 760100?

by fritzm＠fritzm.org

Hi folks, I have a question about floating CSR allocation on PDP-11s. Both the 1976 and 1981 versions of the PDP-11 peripherals handbook indicate the floating CSRs are to be allocated starting at address 760010. However, both the XXDP FLOAT program and simh's autoconfig suggest I should set my DZ11 (first floating CSR device in my config) to 760100. Anyone know what gives? thanks, --FritzM.

7 years, 1 month

allocate floating vector for DR11-C in simh pdp11 autoconfig?

by fritzm＠fritzm.org

Hi folks, I have found it very convenient to maintain a simh configuration that parallels the physical hardware configuration of my PDP-11/45. I'm just about to add a DR11-C for a physical interface that I am building -- this will "grab" a floating interrupt ahead of a DZ11 that I already have in the machine. Does anyone here know of convenient way to inform simh's autoconfig that I wish to insert a DR11-C? cheers, --FritzM.

7 years, 1 month

PDP8/e programmers consoles

by jnc＠mercury.lcs.mit.edu

> From: Allison > you have to pull the panel apart to replace them, gets tiring. Modern > yellow LEDs are nice and bright, and don't burn out. > Less digging in the box is a good thing as over time fumble errors can > hurt it. Agree about replacing lamps - we switched to LEDs BITD because replacing burned-out lamps (especially when you're trying to fix some _other_ problem) when there's something better available is just, silly. > Modern red leds at 8mA are very much brighter. However the yellow look > more like lamps. What about warm white LEDs, though? The ones we used in the QSIC indicator panel are, to me, pretty much indistinguishable from the lights as I recall them from BITD. I mean, maybe if I had them sitting next to each other, I could tell, but... Those are SMD, though, but maybe they are available in bulb replacement form? Noel

7 years, 1 month

Sperry Univac UTS-40 Terminal doc anyone?

by curiousmarc3＠gmail.com

I am the temporary caretaker of a Sperry UTS-40 "intelligent" terminal (very green screen, Z-80 based terminal from the late 70's or early 80's) which I grabbed on eBait for sending parts to Dominique Carlier over in Belgium. The CRT, power supply and character generator seem to work (gives a very sharp semi-random geometric display on power-on, sometimes with a few nicely drawn characters interspersed), but the darn thing does not seem to boot on reset. The picture goes away and weird sound is emitted from the speaker after a long beep-of-death. I was wondering if anyone had service documentation. Or a dump of the firmware. Al, anything that crossed your desk? Marc

7 years, 1 month

PDP11/03 BA-11M Front panel switch replacement

by dj.taylor4＠comcast.net

I have a BA11-M box with the usual front panel control, however it was damaged and all three switches have been sheared off.? The LED's and the circuit card that connects to the power supply appear to be OK.? I would like to repair it and put it back into service.? Is there a replacement for those switches? Doug

7 years, 1 month

DEC bus edge connectors

by chd＠chdickman.com

Does anyone have DEC bus edge connectors they are willing to sell? I would like to do some OMNIBUS interface prototyping and I need a way to connect to the bus back-plane. In my mis-guided youth I resorted so sawing them off perfectly good boards. I would rather not do that again. If anyone has prototype boards they have designed with fingers or dead boards they would part I will take them. My methods are crude, but effective. -chuck

7 years, 1 month

Noel idea you were into raddar so much too cool!

by couryhouse＠aol.com

all in the ?title

7 years, 1 month

radar history

by jnc＠mercury.lcs.mit.edu

> From: Steven Malikoff > I also have a book 'RADAR How it all began' by Jim Brown ... > incredibly precise recollection of the engineering Wow, thanks for that incredibly valuable pointer. My copy just arrived, and it's fabulous; it documents in great detail a part of the story that's little-known, which is the industrialization of the early radar work. There are a number of books from people on the research side (Watson-Watt, Bowen, etc), but not much on the industrial side. There is an obscure book: Frank Rowlinson, "Contribution to Victory: An Account of Some of the Special Work of the Metropolitan-Vickers Electrical Company Limited in the Second World War", Metropolitan-Vickers Electrical Company, Manshester, 1947 (which covers a lot of stuff, not just the radar work), but it doesn't have a lot of technical detail. What it _does_ have a lot of large, excellent B+W photos of the early CH, CHL etc transmitters (which MetroVick built), but not much technical detail of them. That book, and Brown's book, are a marvellous pairing, since he has the detailed description, but no images! A very complementary pairing. Noel

7 years, 1 month

Various Software and Documentation for shipping + donations (round 10)

by mtapley＠swri.edu

All, More of the stack. if any of this interests you please contact me via Private (not list) email at mtapley at swri.edu. If you do want something, send me your shipping address and exactly what you want. I'll get back to you with estimated shipping costs (USPS media rate where possible) as soon as I can. You send me payment (any method is acceptable; USPS does not recommend cash in the mail) and I will ship when payment arrives. If you want Fed-Ex or something different from USPS media let me know at your first contact and I will price that for you. If you can afford to send slightly more than costs, I'll collect up the surplus for Cindy and get it to her. If more than one person wants the same thing, it goes to the person sending me the earliest time-tagged email. If Al K. wants anything for Bitsavers, he gets priority (even if his is not the first email) up until it leaves my hands. There will be multiple sets of email from me, each with a short list of things, unless/until someone asks me to quit. Thanks for your attention! - Mark This list is all Books (down to and including pamphlets), no software included. ????????? Adobe Photoshop for Macintosh, Version 3 (Classroom in a Book), 1994. American Heritage Dictionary: 3rd edition for Mac. 32 pages. Communicator 4 quick-study guide. Laminated folder. DeltaGraph Pro 3 Users Guide, 2nd edition. 1993. Excel 5.0 Advanced, Macintosh, student manual. Logical Operations. 1994. Excel: Mastering Excel 5 for the Mac (An Insiders Guide). Thomas Chester and Julia Kelly. 1995. Eudora Mail Pro, educational use. V. 3.0 user manual & quick reference guide. FrameMaker. Using Framemaker release 5, Windows and Macintosh. 1995. Inspiration user manuals. Getting Started manual. Idea book. Netscape: Official Netscape Communicator 4 Book. Macintosh edition. Pi? James. 1997. Now Up-to-date and Now Contact (user manuals). (Two different versions, to match the two different versions on disk we have, I imagine.) Office: Getting Started. The On-line Research Handbook. Hayden Mead and Andy Clark. 1997. Port Replicator: Users Guide. Micronpc.com 1999 PowerPoint: Using PowerPoint 4 for Macintosh. Que, 1994. Quicken version 5.: Users Guide for Macintosh Perform Users. Quicken 5 for Macs for Dummies. Stephen L. Nelson. 1994. The Student?s Guide to Doing Research on the Internet. Dave and Mary Campbell, Addison-Wesley. 1995. vi: Learning the vi editor. Linda Lamb, O?Reilly & Associates, Ltd. 1990. Word: The Macintosh Bible Guide to Word 6. Maria Langer. ?Includes Power Macs.? 1995.

7 years, 2 months

Anyone have a Fujitsu M2451E 130mb tape drive manual?

by aek＠bitsavers.org

I have a couple of carts I'd like to read, found a drive today, talks SCSI but not common command set. It seems to act more like a disk than a tape (read block makes the tape move), but mode sense doesn't return anything sensible. The only thing I've ever been able to turn up on these drives is a mention in a Fuji product brochure

7 years, 2 months

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test-drb March 2018