test-drb

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101090 discussions

by silent700＠gmail.com

I have completed scanning the 33 issues I was given of "Inside Solaris," a monthly newsletter for admins of the Solaris operating system. This is just a small slice of the total run, which went from 1995 to ??. My scans cover all of 1999 and 2000 as well as parts of 1998 and 2001: https://archive.org/details/insidesolaris Enjoy! - jht

11 years, 10 months

Reading contents of PALS like the 16L8 or 16R8

by wrm＠dW.co.za

Hi all >http://www.vintage-computer.com/vcforum/entry.php?315-Cloning-a-PAL-HAL-%28… Interesting. I've been doing something similar as an on-and-off project since 2011 (more off than on). Wrote some code to apply vectors on my Expro, read the output, didn't know about Minilog (thanks, Chuck), wrote some really clunky code to do something similar. I'm working on the MAC PALs which is kind of redundant since I have Jecel's work archived. My thinking is that a PAL with 8 registers has at maximum 256 states. Therefore I should be able to apply a vector, clock the PAL 256 times, and that would give me all the states. Repeat for the other 1023 or whatever vectors. But I recently got back into brewing beer so there's not much happening on the PAL reverse engineering front. W

11 years, 10 months

I wonder how one would use a MSD...

by f.helyanvy＠gmail.com

Hi! I recently acquired a Racal-Milgo MSD III Modem Sharing Device. Although I doesn't own any modem, I'd like to know how to use such a device. Could someone point me to a manual or something? :) I also may possibly acquire another MSD - or whatever it is, i briefly saw it. [Bummer that I have no space, i'd take a cash machine , too!] -- Ola Hughson

11 years, 10 months

Who is the world's oldest working programmer?

by lproven＠gmail.com

http://www.tnmoc.org/news/notes-museum/who-most-durable-programmer -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Cell/Mobiles: +44 7939-087884 (UK) ? +420 702 829 053 (?R)

11 years, 10 months

Reading contents of PALS like the 16L8 or 16R8

by swtpc6800＠comcast.net

The early 20/24 pin PALs had a security fuse to prevent unauthorized duplication. I worked at Data I/O, the device programmer company, in the 1980s and figured out a way to determine the contents. I did a few experiments to prove the concept but never created a complete package. PAL programmers like the Data I/O LogicPak could apply test vectors to a PAL and check the output state of each pin. For a purely combinatorial device like a PAL16H8 you just need to apply all possible inputs and read the outputs. This will create a large truth table in inputs and outputs that can be minimized with PLD software like ABEL. Registered devices like PAL 16R8 require the bank of registers to cycle through all starting points with all inputs. Most of these devices supported pre-load, the programmer could force the internal registers to a known state. You could force a desired register state and inputs then apply the clock. These early registered PALs had a tri-state output buffer controlled by a dedicated pin so you could always read the register output. Later parts had the output buffer controlled by an internal logic function. I am sure that by now someone has developed a high speed tester that applies every combination of inputs then minimized the output to generate a programming file. I have copies of the early DOS based ABEL software; it runs in a DOS box on Windows 98. I believe that Xilinx now owns the copyright. I have donated copies of the software and source code to the Computer History Museum. Michael Holley

11 years, 10 months

What quad QBUS boards work in a Q/CD backplane?

by jnc＠mercury.lcs.mit.edu

> From: David Riley > Looking at the PMI pins in the KDJ11-B manual, it looks like there are > signal lines on the D2 pins for the memory. That's a +12v pin for Qbus. What I just cannot fathom is why they used D2! PMI is only like 14 signals or so (plus normal QBUS signals like BDALxx), and there are heck of a lot more than 14 available pins on the CD that _do not_ conflict with the normal QBUS power, etc. (You lose xS1 and xB2, but the rest all look OK, although if you want to stay away from +5 you lose a few more.) Someone must have a bad case of brain fade, is all I can think.... But I'm still pretty incredulous that nobody else caught it before it was too late. Maybe it was deliberate - they hoped to increase sales through people burning boards out, plugging them into the wrong backplanes? (Tongue 3/4 in cheek... :-) Noel

11 years, 10 months

Customs - Was: Re: 9U VME Sun stuff FTGH

by ian.primus.ccmp＠gmail.com

Yeah - I've heard a couple of stories myself, but personally have never had a problem with customs. I've come back from Canada a couple of times with hardware (rescued a Burroughs B80 one time even - now that was a vanload!) and they have never once even opened the side door of the van to get a better look, they just peer in through the driver's window a bit. I have gotten the "What do you want with this junk" bit though. Granted, it's been several years since I have been to Canada, but, I'm not terribly worried. All I can hope is that they do the same, or, when checking, will notice that Sun hardware was made in the US to begin with. -Ian

11 years, 10 months

What quad QBUS boards work in a Q/CD backplane?

by jnc＠mercury.lcs.mit.edu

> From: David Riley >> But not all quad cards have removable grant jumpers - e.g. the BDV11 >> doesn't. (Not sure why it even _has_ grant jumpers, given that one >> would usually make it the last card, especially since it has pull-ups >> - but I guess it's in case one doesn't.) > You can install it without the terminators ??? You'd have to desolder the terminator resistor packs (or do etch cuts), no? It doesn't have any jumper/switch to disable them. (The Sigma backplane has terminators in plug-in resistor packs, which can be removed.) > From: Mark J. Blair > Well, it turns out that I haven't added the C-D rows to the table > because I don't have any good documentation about them yet. The CD pinout is given in the 1980 Microcomputer Interfaces Handbook under the H9273-A entry (the H9276-A is the same; I forget where I found that one); here it is: +5 CA2, DA2 Gnd CC2, CT1, DC2, DT1 nCx2 - n+1Cx1 for x = B, D-S, U-V (last two high amperage traces) nDx2 - n+1Dx1 for x = B, D-S, U-V nCA1 - n+1CC1 nDA1 - n+1DC1 nCT2 - n+1DT2 Jumper W2 connects 1CK1 - 1CL1 Jumper W3 connects 1DK1 - 1DL1 The jumpers are for when plugging a quad LSI-11 (the original) in; it needs those, apparently. Noel

11 years, 10 months

Contacting Mr. Mouse

by Arno_1983＠gmx.de

(sorry for abusing the list, but due to the very nature of the problem I currently cannot contact Mr. Mouse directly and his directions for this case explicitly call for me to "contact [him] through some other channel".) Hello Mouse, when trying to contact you about the Sun-3/4 stuff you were offering FTGH, I got back the following: > "mouse at rodents-montreal.org": > SMTP error from remote server in greeting: > host: MX-4.rodents-montreal.org: > This relaying host's domain is blocked for spamming me. See > ftp.rodents-montreal.org:/mouse/misc/one-strike.txt for more. Unless you're keeping some sort of whitelist for addresses on otherwise blacklisted servers (but if you did so, I'd think you'd be mentioning that and a way to get on there in the document you're referring to), your approach strikes me as a bit over the top. After all you're blocking accounts (and the people behind them) that never were responsible for any spam you may have got, without even giving a procedure to get through that ban (like including some keyword or a random one-time key in the Subject line). I will be off the 'net until the beginning of next week, but I hope we can work out a solution to that afterwards. So long, Arno

11 years, 10 months

cctalk Digest, Vol 133, Issue 43

by seefriek＠gmail.com

From: Al Kossow <aek at bitsavers.org> > >You would obviously only talk to one device at a time. PC would be at 128.0.0.16 on a >private un-routable interface (which is why it's 128.0.0.x). > 128.0.0.0/24 isn't unroutable. It's allocated to a company called "Jump Management SRL" out of Romania (and it's in the BGP tables). Unroutables are 10/8, 172.16/12 & 192.168/16 (per RFC1918). KJ

11 years, 10 months

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