test-drb July 2009

test-drb@ccmp.vtda.org

181 participants
245 discussions

by jwest＠classiccmp.org

The classiccmp server will be down tomorrow sometime later morning or early afternoon (some time between 10:30am and 2pm) for minor hardware maintenance. I would not expect it to be down for more than 20 minutes. Thanks for your patience and understanding! Jay West

15 years, 5 months

Nuclear Data ND-812 info...

by bbodnar1＠lemko.com

I stumbled across this thread from a year ago. I owned a BR2412 and designed and built a serial interface for it around 1981 or so. There were plans for this machine, but grad school interfered and when my home was flooded the computer hit the garbage. The BR2412 used a gel-cel battery to back up DRAM in the event a power failure occurs. Simply turning the computer off didn't drop power to the memory. You are correct this was a Bunker-Ramo version of the ND812; the BR2412 was used for factory automation. The ND812's design was highly motivated by the PDP-8 family - 133 ohms unidirectional busses, memory banks, no stack (used a "jump and save" instruction with some additional hardware to determine whether an indirect jump referenced a subroutine return address or something like that). The clock was 2 MHz 8-phase derived >from a 16 MHz crystal-controlled clock. The entire motherboard was wire-wrapped; although the motherboard looked kludgy, the cold-weld contacts were extremely reliable and the rat's-nest of wiring reduced electromagnetic effects. The vast majority of the circuitry was based on Fairchild's 9000 and 9300 family of TTL SSI and MSI parts. Nuclear Data tried to compete with NCR with this machine and failed miserably. Although ND could build excellent hardware, they apparently never got the software side up to par. Thanks for the memories! Cordially, Bo Bohdan Bodnar, PhD Lemko Corporation 1700 East Golf Road, 7th Floor Schaumburg, IL 60173 +1 847-240-1990 x238 www.lemko.com

15 years, 5 months

RP02, RP03, RP04

by mross666＠hotmail.com

Thanks to a recent rescue from Canada, I now have the above DEC disk drives. They're not in bad shape - need a good cleaning - and will probably get them running in due course; I have RP15 and RP11 controllers to hook them up to. For this I will however need disk packs! Now Farris will *build* you any disk pack you desire - at $850 each, and my budget doesn't reach quite that far. So anyone with packs for the above, please get in touch! http://www.mfarris.com/pack/dec2.html gives some information on the packs in question. The RP02 is a Memorex 660, IBM 2314 (drive) / 2316 (pack) - compatible, the RP03 uses the same pack (????), the RP04 is IBM 3330 compatible. Hmmm... dumb question: The RP06 also used IBM 3330-compatible media, IIRC; I don't suppose I can use the same packs on the the RP04, can I? That would be too easy... Oh, and I'm pretty sure I'll also need to find or make cables to hook the drives up to the controllers..! Thanks Mike http://www.corestore.org _________________________________________________________________ Lauren found her dream laptop. Find the PC that?s right for you. http://www.microsoft.com/windows/choosepc/?ocid=ftp_val_wl_290

15 years, 5 months

LSI ADM3A with an unusual keyboard

by ian_primus＠yahoo.com

I just acquired a rather unusual ADM3A. At first glance, it looks just like every other ADM3A, in beige rather than the more popular blue, but still, common. This particular terminal has an unusual keyboard: The key to the left of "Q", usually Escape, is labeled "SAMPLE COPY". The key in the upper right, usually "~/HOME", is labeled "STOP" The key to the left of RETURN, usually "Line Feed", is now "STATUS". The key to the right of RETURN, usually "HERE IS", is blank. Directly below return, the "\" key is now RUBOUT, shifted is "|" To the right of that key, is a double-width key, "CONTINUE" The key in the lower right, usually "CLEAR" is blank. Other oddities are the lack of arrows on the J and K keys, while they remain on the H and L keys. X also bears DELETE. And, like every other ADM3A out there, this one is missing the logo plate, so no OEM markings available. Any ideas what system this might have been used on? Inside looks pretty normal. Lower case option is not installed. -Ian

15 years, 5 months

Fwd: The Electroregeneration Society (Salt Lake City, UT)

by legalize＠xmission.com

<http://peteashdown.org/journal/2009/07/07/the-electroregeneration-society/> First meeting of this non-profit is tonight (July 7th) at 6pm. 555 South 400 West Salt Lake City -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 5 months

LSI ADM3A with an unusual keyboard

by dm561＠torfree.net

Date: Mon, 06 Jul 2009 21:03:58 -0600 From: Richard <legalize at xmission.com> >>Ian King <IanK at vulcan.com> writes: >> Given that the ADM-3a is a truly 'dumb' terminal - in the sense that it's >> all hardwired logic - >Its SSI logic? I thought it had a microprocessor in there. >Did the ADM5 have a microprocessor? ------- Speaking of LSI LSI, anybody want an ADM-11? mike

15 years, 5 months

Sort of OT: DLT7000 tape library

by doc＠vaxen.net

I have a Breece-Hill Q7 tape library that needs a new home. Local pickup only, as it's the size of a BA123 and likely not worth the cost of shipping. Wide SCSI, 2 DLT7000 drives, capacity 28 tapes, barcode reader. I have a dozen or so DLT-IV tapes for it, a couple of cleaning tapes, and a lot of tape labels. I ran it with Tivoli Storage Manager, but it should work with any of the majors. In good shape, working condition. I'd like to get $50 for library and tapes. It's in Austin Texas. Doc Shipley

15 years, 5 months

PING: James Register

by mtapley＠swri.edu

James Register (or anyone knowing whereabouts), please contact me or John Gold at your earliest convenience. Others, sorry for the inconvenience, but it does pertain to a classic computer rescue. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

15 years, 5 months

Multiflow documentation available

by rescue＠hawkmountain.net

3 ring Multiflow binders containing: TRACE/UNIX Operating System Multiflow System Administrators Guide, Reference Manual and Supplement TRACE/UNIX Operating System Programmers Supplement Parts 1 + 2 TRACE/UNIX Multiflow Systems Administrators Guide, Reference Manual, and Supplement Trace/UNIX Programmers Reference Manual, Section 1 Trace/UNIX Programmers Reference Manual Sections 2-7 Multiflow Computer Misc Documents Multiflow Fortran Users Guide and Reference Manual (Fortran Compiler 2.1) Assembler & C Notes (hand written title on spine, Multiflow docs inside) Intermediate Language Document (not in 3 ring binder) >From what I can tell Multiflow Trace/UNIX is based on 4.3 BSD. The manuals are for Trace/UNIX version 3.2. This stuff is located in Cambridge, MA, or could be made available in Sharon, MA. If you have any interest in these manuals, e-mail me ASAP, as they are in the old computer room/office space and I don't know how much longer I'll have access to the space (or how long before they clean out what was left behind). This would make a great addition to bitsavers (if not already there?). -- Curt

15 years, 5 months

Raised flooring

by dbetz＠xlisper.com

I just noticed this on Craigslist. I think I've seen requests for raised flooring here before so I thought someone might be interested. http://nh.craigslist.org/sys/1257296853.html

15 years, 5 months

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test-drb July 2009