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
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
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
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
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
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
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.
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
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
