test-drb

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101090 discussions

by jnc＠mercury.lcs.mit.edu

> From: Tony Duell > If it's anything like the 11/44 ... the memory bus is carried on the A > and B connectors, the peripheral bus on the C,D,E,F connectors. I have yet to totally grok the -11/44, but the documentation indicates the slots for memory are memory only (i.e. EUB on the A/B connectors). Are you saying they are also SPC on the C/F connectors? (If so, ever tried plugging an SPC device into a 'memory' slot? :-) If so, that would make it very similar to the -11/24, then - although does it also have the thing where the data lines are connected from the EUB (connector A) to the SPC UNIBUS (connector C)? The CPU prints show data from the CPU going to connector A, unlike the -11/24, which sends data to C - although if the backplane has the EUB and SPC data busses connected, it would all be the same in the end. Noel

9 years, 6 months

MS11-P FMPS missing page

by jnc＠mercury.lcs.mit.edu

> From: Al Kossow > It's there, I'll upload it now Great; thanks! Noel

9 years, 6 months

MS11-P FMPS missing page

by jnc＠mercury.lcs.mit.edu

So the online set of MS11-P Field Maintainence prints is missing page 3 of the prints (data drivers page). Does anyone have an original hard-copy, and can supply a scan of the missing page? Thanks (in advance, and hopefully :-). Noel

9 years, 6 months

LASERS!

by jwest＠classiccmp.org

While fascinating... it's not on topic. Lets wrap up this thread :) J

9 years, 6 months

The emulator that needs 3GHz

by lproven＠gmail.com

*Accuracy takes power: one man?s 3GHz quest to build a perfect SNES emulator* *Emulators for playing older games are immensely popular online, with regular arguments breaking out over which emulator is best for which game. Today we present another point of view from a gentleman who has created the Super Nintendo emulator **bsnes**. He wants to share his thoughts on the most important part of the emulation experience: accuracy.* http://arstechnica.com/gaming/2011/08/accuracy-takes-power-one-mans-3ghz-qu… -- Sent from my phone - please pardon brevity & typos.

9 years, 6 months

Flat panel display rot - "tunnel vision" in electroluminescent and other displays- bad seals.

by ian.finder＠gmail.com

I have a few GRiD compass systems and some are suffering from massively decreased contrast on the edges of the displays: [See the system on the left] https://www.instagram.com/p/BIGGzUzgat-/?taken-by=tr1nitr0n [Or this one:] http://www.ripstick.com/USCM/images/Grid_Compass_1101_Laptop_in_Box_002.jpg Meanwhile, other EL systems I have- like my HP integral PC- haven't succumbed to this. I have seen similar issues on amLCD displays in my Tadpole, Toshiba and other machines, so this is something we all may have to confront. ------- I was wondering if the folks here had theories? I'm thinking moisture (or air) might be leaking in from the edges of the glass panes, perhaps from a compromised seal- sorry for the silly picture but you can see the composition of the display here: https://www.instagram.com/p/6BXaLBtSzd/?taken-by=tr1nitr0n Does anyone know how one might prevent this from progressing- storage tips? Could it be reversed? Better yet, does anyone have ideas on how to rapidly dehydrate the display? Perhaps there is even a way to re-seal them. I think all two-glass-pane displays that don't have a vacuum may eventually succumb to this. Perhaps it is just oxidation and not moisture, but I'd love to hear any theories. Thanks, - Ian -- Ian Finder (206) 395-MIPS ian.finder at gmail.com

9 years, 6 months

Getting rid of books and documentation

by spedraja＠ono.com

Hello everyone. My employer plans to close the data center where I have been working for several years usually. This involves the destruction or elimination of all kinds of manuals, books, documents and diverse equipment considering that this is deprecated. In general the hardware belongs to IBM for contractual reasons, but not so with the documentation I have mentioned. In my case I saved from destruction several old manuals and training courses that I will begin to scan in the coming months. But I can not take care of all available material. As an example there are enough red books related IBM OS / 2 and its environment. There are also several CICS 2.1 ... it is difficult to make an accurate count. I will try to make some more detailed photos as possible and post them somewhere so that anyone interested can review. Given my residence in the European Union, I think it would be easier to send these documents to interested persons who also reside in the EU, if necessary. On the other hand I must say that we store yet one IBM 3705 operative until few years ago. I don't know what plans have IBM for it. But that's another story. With kind regards Sergio

9 years, 6 months

Who Loves IBM Tape?

by silent700＠gmail.com

A very nice IBM 3480 brochure ended up in my hands yesterday and I had to bump it to the top of the scan queue: https://archive.org/details/IBM3480MagneticTapeSubsystemBrochure Lots of nice shots of IBM data center tape equipment as well as a cool "history of tape at IBM" set of pages. I've never heard of 7340 Hypertape. -j

9 years, 6 months

LASERS! && Freemont Street LED array (was Re: Cray J932SE (was Re: Straight 8 up on Ebay just now))

by jnc＠mercury.lcs.mit.edu

> From: Mouse > I'm wondering how practical it might be to take a laser and turn it > into a vector display on a handy blank wall Those have been around for decades - I recall seeing them used to draw things on the sides of building, _many_ moons ago. I'm assuming they bounce the beam off a mirror, and actuate the mirror, but I don't actually know how they worked. Noel

9 years, 6 months

More PDP-11 front console scans

by jnc＠mercury.lcs.mit.edu

I recently got access to an orginal PDP-11/70 front console (the one in magenta and rose), and also an 'Industrial' -11/70 (blue and red). Scans of both of these front panels have been added to my PDP-11 stuff page: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/PDP-11_Stuff.html My A3 scanner won't _quite_ eat the whole thing in one gulp, but it did manage to 'see' all the printed stuff. The actual panel is very slightly larger, so there are some thin sections on either side missing from the scan, _but_ on that page there is a mechanical drawing that gives the dimensions of the whole thing. So the two together should enable a complete reproduction. Noel

9 years, 6 months

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