test-drb November 2016

test-drb@ccmp.vtda.org

165 participants
224 discussions

by rlloken＠telus.net

So I am 35 days from retirement and I have been cleaning up the office and my Redhat Linux workstation and in /usr/local/src I found: linuxrogue-0.3.7-roguecentral.tar So I exploded the tar ball and compiled it and it crashed so I carted it over to one of our Tru64 Unix Alpha boxes, took the 'g' off "gcc" in the makefile, used sed to change ncurses to curses where ever it could be found and compiled it. AND IT WORKS SWELL! Rogue is as addictive today as it was in 1982 on the VAX-11/780 running 4.2bsd. I think I will port it to OpenVMS and run it on my AS4100. -- Richard Loken VE6BSV, Systems Programmer - VMS : "...underneath those Athabasca University : tuques we wear, our Athabasca, Alberta Canada : heads are naked!" ** rlloken at telus.net ** : - Arthur Black

8 years, 1 month

Looking for info on the imi 5018 MFM drive.

by jos.dreesen＠greenmail.ch

..in particular I wouil like to know the purpose of the dipswitches on the PCB Jos

8 years, 1 month

Interested in UNIVAC 9000 Series (and IBM 360)

by jnc＠mercury.lcs.mit.edu

> From: William Degnan > for all that I have read about the actual use of the /20 that was not > what it was for. IBM used the /20's as a smart terminal and that kind > of thing. The thing in between the mainframe and something else > operating in a remote location, and so on. When I was working at IBM Bermuda (as sort of an intern), they used a 360/20 as their main service bureau machine. (I'm pretty sure it was a /20, and not a /30.) It had a card reader/punch, 4 (IIRC) tape drives, and a 1403 printer. They had just gotten in a System/3, to replace it, but only one client had transitioned to using it. Noel

8 years, 1 month

Double Buffer RK11-C

by jnc＠mercury.lcs.mit.edu

> Check out the module utilization chart .. On a stock RK11-C, slots 1-8, > rows C-D (the bottom two rows) are empty. ... (I'll be documenting the > added Flip Chips in the Double-Buffered variant 'soon'.) I've added a module chart for the double-buffered variant here: http://gunkies.org/wiki/RK11-C_disk_controller I'm working on the prints now. (Any idea what I should call this thing? There's already an "RK11-C_Engineering_Drawings".) Noel

8 years, 1 month

Interested in UNIVAC 9000 Series (and IBM 360)

by jnc＠mercury.lcs.mit.edu

> From: Chuck Guzis > On 11/18/2016 10:00 AM, william degnan wrote: >> Hot business women posing with classic UNIVAC hardware > Models? Yup. Definitely too hot to be business-women! (Hope Chuck doesn't mind being quoted out of context, but it was just too good to let pass... :-) Noel

8 years, 1 month

DEC bus receiver chips

by jnc＠mercury.lcs.mit.edu

So, I was glancing at pair of M784 Flip Chips, on early production, one late, and I noticed that the early one used SP380A's (marked "DEC 380A"), and the later one used DS8640's (marked "DEC 8640"), with the exact same PCB traces. So probably the latter is an alternative for the former. Noel

8 years, 1 month

National Semiconductor 48-bit and 56-bit ECC polynomials

by spacewar＠gmail.com

Has anyone determined what 48-bit and 56-bit ECC polynomials are used by the National Semiconductor hard disk controllers? The DP8496/97 allows choice of hard-wired 16-bit CRC, or 32-bit, 48-bit, or 56-bit ECC. The 32-bit ECC is a common polynomial known as the Glover polynomial, and it's the same one used by WD and others. However, National was apparently extremely proud of the 48-bit and 56-bit polynomials they chose, and the data sheets say that they require a license agreement with National. The more common DP8466 supports 32-bit 48-bit, but allows the user to configure the polynomial. The data sheet states that National's 48-bit polynomial is available under license. WD wasn't as proud of their 56-bit polynomial; it's given in the WD42C22 data sheet. It doesn't seem to match National Semicondutor's 56-bit polynomial.

8 years, 1 month

Fwd: [SIGCIS-Members] Jay Wright Forrester

by aek＠bitsavers.org

-------- Forwarded Message -------- Subject: [SIGCIS-Members] Jay Wright Forrester Date: Fri, 18 Nov 2016 21:27:40 +0000 From: Deborah Douglas <ddouglas at mit.edu> To: Sigcis <members at sigcis.org> I regret to announce the death of one of MIT?s leading computer pioneers Jay W. Forrester. Forrester died Wednesday, November 16 at age 98. The New York Times has published an obituary; MIT?s is being completed as I write. There will many who can offer comments on Forrester?s myriad contributions but here, I would add that he has been a stalwart supporter of the MIT Museum and a regular participant in many programs. I am grateful for his enthusiasm for sharing the details of his knowledge about the Servomechanisms Lab, Whirlwind, SAGE, Lincoln Laboratory, system dynamics and management. As more information becomes available, I am happy to share with interested individuals. Debbie Douglas *Deborah G. Douglas, PhD* ? Director of Collections and Curator of Science and Technology, MIT Museum, Room N51-209 ? 265 Massachusetts Avenue ? Cambridge, MA 02139-4307 ? http://mitmuseum.mit.edu ? http://museum.mit.edu/150 ? ddouglas at mit.edu <mailto:ddouglas at mit.edu> ? 617-253-1766 phone ? 617-253-8994 fax

8 years, 1 month

DNIX and ABCenix install media disk images.

by mattislind＠gmail.com

A guy in Sweden made the effort to image the install media for DNIX 5.3 and 5.12 as well as ABCenix 5.12. https://dl.dropboxusercontent.com/u/96935524/Datormusuem/dnix-imd.tar.bz2 https://dl.dropboxusercontent.com/u/96935524/Datormusuem/ABCnix.tar.bz2 These are for computers made by DIAB (later part of Bull) DS90 and Luxor ABC1600 (branded Luxor but developed by DIAB). https://en.wikipedia.org/wiki/Dataindustrier_AB https://en.wikipedia.org/wiki/ABC_1600 They all were 68k based. The early DS90 had 68010 + 68451 MMU. The ABC1600 had 68008 and some homebuilt MMU. The ABC1600 is quite a nice machine with 768x1024 b/w portrait screen that can be twisted into landscape. It has a simple windowing system. Actually half of the hardware that make up the system is the graphics board. Unfortunately the 68008 makes it quite weak. I hope that the imaged disk can end up in a safer place than my dropbox, for example Bitsavers... Thanks Jonas Malm for doing the disk images (I am just the messanger)! /Mattis

8 years, 1 month

Datamation, May 1972

by kylevowen＠gmail.com

Does anyone have a scanned (or hard) copy of this? I'm trying to locate one, without much success. I'm mostly interested in the article entitled "Capture and Display of Keyboard Music". Thanks! Kyle

8 years, 1 month

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test-drb November 2016