test-drb September 2019

test-drb@ccmp.vtda.org

131 participants
100 discussions

by tsraguso＠gmail.com

This is my first of many posts that I will make about this sale. I am liquidating a large warehouse filled with vintage computers including Apple, DEC, IBM, Commodore, Tandy/Radio Shack, HP, and more. Many items are currently inaccessible due to large piles of junk and video games. So far, I have found: Apple Lisa 2 Tandy 6000 HD IBM 5251 Keyboard MicroVAX 3900 (currently inaccessible) MicroVAX II (currently inaccessible) Cromemco System One Ohio Scientific Challenger 2p Lots of Apple II series IBM 5110 Piles of VT100s Even more VT220, VT320 Northstar Advantage Osborne 1 Various Kaypros PC clones Commodore B-Series Just about every kind of TRS-80 IBM XT with monitor in box NeXT cube Almost every type of Macintosh Amigas IBM PS/2 P70 HP 3000 (inaccessible) 1970s HP computers Boxes filled with Cromemco and Northstar manuals A pallet of 1980s PC clones (inaccessible) Heaps of CRT monitors Mechanical Keyboards At least 20 Apple Extended Keyboard II's I have barely scratched the surface of the warehouse, and will keep you updated when I find more items, or am able to move the large systems. The DEC terminals are not yet for sale, since I have not yet found the keyboards. I am not taking offers on the entire warehouse at this time. Please feel free to text me with questions Thomas Raguso (832) 374-2803

5 years, 2 months

Fwd: VAX + Spectre

by paulkoning＠comcast.net

"Spectre" is one of two notorious bugs of modern CPUs involving speculative execution. I rather doubt that VAX is affected by this but I suspect others here have a lot more knowledge. paul > Begin forwarded message: > > From: coypu at sdf.org > Subject: VAX + Spectre > Date: September 17, 2019 at 5:32:42 AM EDT > To: port-vax at netbsd.org > > So, this is a bug report: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86811 > > GCC would like to know if VAX needs Spectre-related work. > Are any of the VAXes ever made capable of speculative execution? the > first tech for doing it was in 1967, so not entirely far-fetched.

5 years, 2 months

Raymond Check discusses MS DOS Floppy Disk Cache

by cliendo＠gmail.com

How did MS-DOS decide that two seconds was the amount of time to keep the floppy disk cache valid? https://devblogs.microsoft.com/oldnewthing/20190924-00/?p=102915

5 years, 2 months

HP vintage boards being sold as scrap

by sales＠elecplus.com

https://www.ebay.com/itm/174036836066 Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

5 years, 2 months

Course materials for MIT 6.031 (c. 1974) scanned

by derschjo＠gmail.com

Thought someone here might find this interesting; I have a binder of materials describing the entire course (descriptions of the PDP-11/45 DELPHI system, readings, coursework, quizzes, exams (with answers)) for MIT 6.031 "Structure and Interpretation of Computer Languages", 1974. http://yahozna.dyndns.org/scratch/scans/mit/MIT%206.031%20Structure%20And%2… It starts with PDP-11 assembly language, moves on to Algol and LISP and is over a thousand pages of material. Get studying! - Josh

5 years, 2 months

phone systems, old and less-old

by jwest＠classiccmp.org

I know some peeps here are phone pholks?..See www.ezwind.net/phonestuff <http://www.ezwind.net/phonestuff> One is an old ?bell system western electric?. It seems to have a few 66 blocks just under the cover, a power supply, and some kind of modules that plug in. The other is a Nortel Networks ICS. It feels way too light, not sure if anything is in it. There is another piece of Nortel gear on the wall, seems to be some kind of wireless? thingy called Nortel Networks Call Pilot 100. I know zilch about phone systems, and don?t want to know anything about phone systems ? They were on the wall of a warehouse telco closet that my client just rented and we need the space on the dmarc wall for a rack. If someone wants them, and is willing to pay ship/pack (ups) from 63146 let me know within 2 days or they go to the skip. J

5 years, 2 months

Course materials for MIT 6.031 (c. 1974) scanned

by jnc＠mercury.lcs.mit.edu

> From: Josh Dersch > descriptions of the PDP-11/45 DELPHI system > ... > moves on to Algol and LISP I later became the 'owner' of that PDP-11/45 (our group at LCS traded an -11/40, which EECS wanted for their DECSystem-20, for it). That Algol and LISP were later moved to Unix V6 when the group that had done DELPHI converted to Unix. I have both - alas, the source for the Algol has been lost. :-( Noel

5 years, 2 months

IBM 5110 transformer?

by mattislind＠gmail.com

A friend of mine is trying to repair a IBM 5110. He is convinced that the transformer is bad. Anyone knows the spec of the transformer? Someone that has a spare? Looking into the tech documentation tell me that the machine requires +/- 5V and +/- 12 V and also +8.5V A very rough guesstimate based on the number of wires from the PSU to the backplane would give 20A 5V, 4A +12V, 4A +8.5V, 1A -5V and 1A -12V. Anyone with a better guess? /Mattis

5 years, 2 months

HP3000/917LX available in Vacaville

by sieler＠allegro.com

Lee writes: > This is a *very* nice entry-level HP3000/MPE system based on PA-RISC > architecture. But one note - the 917 had the soldered TOD battery on the > motherboard, vs. the FRU TOD battery in the later 918. Not a reason to skip > if you are interested in this machine. True, there's been some discussion of that over on HP3000-L. IIRC, it's still possible to boot even if the battery is dead ... boot to the ISL> prompt, run clkutil, set the date, then exit to ISL>, then run 'START'. Stan

5 years, 2 months

fix? Repair? or leave alone? http://rcade.camden.rutgers.edu/2020symposium.html

by couryhouse＠aol.com

http://rcade.camden.rutgers.edu/2020symposium.html

5 years, 2 months

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test-drb September 2019