test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jnc＠mercury.lcs.mit.edu

Does anyone know what the QED board (4th image) in this eBay lot: http://www.ebay.com/itm/322414100718 is? The large chip looks like a J11 chip. However, the only QED PDP-11 board I found mention of online is a high-performance hex board UNIBUS processor, the QED 95. Noel

8 years, 9 months

need (physical) key for Sun SPARCserver 1000e

by barythrin＠gmail.com

Perhaps a silly question but have you poked around local social media for a local unix group? Or a local craigslist ad for someone to borrow a key? I wouldn't think they'd be thst uncommon although admittedly I also stopped/paused a project for similar lack of results a while back (much different system though).

8 years, 9 months

Information Request: unidentified HP 9825T instructions

by jnc＠mercury.lcs.mit.edu

> From: Tony Duell > Having other hardware decode instructions that appear as NOPs to the > main processor is not uncommon in HP machines. Ah, so you actually had some prior knowledge that helped in working out that puzzle, that that's what's happening here! :-) Noel

8 years, 9 months

Mystery QED board

by jnc＠mercury.lcs.mit.edu

> From: Josh Dersch > I think it is a QED 90 -- there are docs on Bitsavers ??? The only file in: http://bitsavers.org/pdf/quickwareEngineering/ is for the QED-95? Noel

8 years, 9 months

need (physical) key for Sun SPARCserver 1000e

by other＠oryx.us

Its literally Christmas for me today. I came into physical position of a well optioned-out SPARCserver 1000e, accompanied by several SPARC Storage Arrays. I'm doing a physical review of the 1000e, i.e. re-seating boards, physical clean up, etc. And reviewing all the appropriate hardware documentation, still available, directly from Oracle. Anyway, on the front of the case is a (4) position power switch (i.e. standby, on, DIAG, lock), that is unfortunately not set to the on position. Hoping that someone out there either has a key that they will part with, or, knows of another (presumably Sun) key that will work in the 1000e key switch. Thanks for looking, Jerry @ 75077

8 years, 9 months

trying to resurrect a DG Nova 3

by suea.pac＠gmail.com

Hi CC folks: Been trying for several years now to find the vital parts I need to get a Nova 3/12 from my old Univ. up & running. What I do have now is the chassis with PS, front panel, CPU and FPU boards, some of the documentation, and, hopefully pending, a disc drive (not sure if it has controller). Most of all, of course, we badly need Mag or MOS memory, plus I/O boards/peripherals. Have posted on "vintage computers" several times and also contacted a DG specialist but so far no success with parts. ANY help in getting this thing going before, at pushing 70, I get too old to ever see it run even a simple routine or ancient game, (or care !) would be very deeply appreciated!! Please eMail: firesweep "at" verizon "dot" net if you can help or have leads! regards, Roger A. in NY

8 years, 9 months

Current Loops and TTYs (was Re: New batch of pdp8 OMNIBUS to USB interface! Please Read and react!)

by ethan.dicks＠gmail.com

On Tue, Feb 14, 2017 at 4:22 PM, Philipp Hachtmann <hachti at hachti.de> wrote: >>> PS: Add a 45.5 baud serail port. Control everything with a 5 level >>> TTY. :) >> >> Dirty casual. 20mA current loop or nothing. > > The 45 baud machines do NOT run on 20mA. They usually run on 40mA :-) The M19 is 60mA at 100VDC... takes a bit to pull that relay. > 20mA is the domain of model 28, 32, 33 etc. Yep. That's all I have in my own pile... (33 and 35). -ethan

8 years, 9 months

New batch of pdp8 OMNIBUS to USB interface! Please Read and react!

by jnc＠mercury.lcs.mit.edu

> From: Tony Duell > Personally I _do_ care about lead free solder. I won't have it. The > fact that part of this board comes pre-assembled with that horrible > muck means I won't even consider buying one. Gee, Tony, why don't you tell us what you _really_ think! :-) Noel

8 years, 9 months

Yale renames Calhoun College for Grace Hopper

by cclist＠sydex.com

Grace Hopper (if you've ever followed CODASYL or the COBOL language was a very sharp lady who's long had my admiration. Kudos to Yale! http://news.yale.edu/2017/02/11/yale-change-calhoun-college-s-name-honor-gr… --Chuck

8 years, 9 months

Changing wire-wrap configurations on DEC circuit boards

by earl＠retrobits.com

Hi there, I've got a couple of DEC QBUS boards (including a quad SLU) for which configuration is set by wire-wrap jumpers. I don't have a wire-wrap tool, and have found that trying this by hand without one is not workable. Has anyone come up with a clever way to permit reconfiguration of these boards without semi-permanent changes? Or, alternatively, what wire-wrap tool would you recommend? Thanks! - Earl

8 years, 9 months

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