Hiyall,
Hmm, this is almost on-topic here, and contains a fair bit
of electronics and puter stuff. I wonder whether they'll
include the engineerings drawings.
http://cgi.liveauctions.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=225629…
And, just for the record: yes, I am bidding, and no, not affliated.
--fred
>Message: 1
>Date: Tue, 13 Jul 2004 17:32:21 +0800
>From: Wai-Sun Chia <waisun.chia(a)hp.com>
>Subject: CDC 9762 vs. RM02/03?
>To: General(a)caspar.my.cpqcorp.net,
> "Discussion(a)caspar.my.cpqcorp.net":On-Topic Posts Only
> <cctech(a)classiccmp.org>
>Cc: cctalk(a)classiccmp.org
>Message-ID: <40F3AC25.7080303(a)hp.com>
>Content-Type: text/plain; charset=us-ascii; format=flowed
>
>I have some conflicting info here. On one hand the literature says that
>DEC rebadged the CDC9762 as RM02 and RM03s...
>
Rebadged and had modified (CDC supplied a slightly modified SMD
interface for DEC to interface to.
>OTOH, the CDC has a SMD interface yet the RM02/03 has a MASSBUS interface.
>
The SMD interface (modified by DEC) goes to a Massbus adapter
housed in the drive cabinet under the drive.
DEC also used a similar technique on RP04/5/6's which used a
DCL (Drive Controller Logic IIRC) to interface to the Massbus
>from the internal drive logic levels.
DEC modified the SMD signals on the RM02/RM03/RM05 to make them
slightly different from standard SMD versions and they also used
the CDC high altitude heads to reduce crashes.
>Furthermore, the CDC is listed to be at 80MB, yet the RM02/03 apparently
>has 67MB only.
>
RM02/RM03 is 80mb unformatted 67 formatted. CDC sold the drive
which could be set to many different sector sizes and sector counts
per cyl.
So the DEC was 31 or 32 (IIRC) sectors of 512 bytes per track.
CDC topped out with 33 sectors...
IBM Series 1 systems I worked on used 256 byte sectors IIRC.
>So, which is true? I'm confused.
>
>
>Thanks.
>/wai-sun
>
>
Bill Pechter
ex-DEC Field Service
--
Bill Pechter
Systems Administrator
uReach Technologies
732-335-5432 Office
877-661-2126 Fax
877-661-2126 uNumber
It was the
first TTL machine Burroughs made
--
oops.. thought the 1965 was. Microcode cache was the big change for the 1965?
Al has my notebook on the follow-up machine
--
Which I need to return to you.
There is a LOT of new information up on bitsavers now, Steve you may want to check out.
--
is the Computer History Museum ever going to be interested in
resurecting the B1955 they have??
--
I hope so, but they have two major restoration projects going on right now (pdp-1 and 1401)
so they probably won't want to do anything until after those.
Hi,
I'm getting around to doing something w/ that RS/6000 59H (finally) -
Backup server for my network.
So I Epay for a 10/100 MCA NIC, (No, 10Mbs won't do for the amounts of
storage involved). I've had a Sun Storage Library in the basement for
a while, get AIX re-installed, and the box on the LAN.. And then I go to
plug the library into the SCSI connector. Wots this.. Hmm, not HD50
like I thought.. Hmmm Google..Google..Google... And an hour later
Google has told me very little.
Anyways, the SCSI card is a IBM's SCSI-2 Fast/Wide card # 71G2589.
The connector itself has 68 'pins' (says so on the connector) Looks
more like a Centronics connector but is smaller, and has more than 50
pins. (Or you could say it looks like a SCA connector, but is missing
12 pins.) Its also to "big" to be VHDCI.
Hopefully I'll be able to re-ID the harddrives in the system, and
connect the library onto the other end of the SCSI chain, and get it
connected that ways. (Otherwise, I'll be looking at interfacing the
library to a SGI Indy (or Octane). The RS/6000 is at least more
impressive looking.)
Anyways, I'm annoyed now, and would at least like to know what that
connector is, and where I can get an adapter/cable for it. (whatever
this is to HPDB50)
Anyone out there own a "Mallet-O-Understanding", and feel like beating
me about the head and shoulders w/ it? :-)
Thanks,
David
> How old is a 1955?
Early 80's. Second to last generation of machines that started with
the B1700 in the early 70's
> What is the blinkenlight count like.
24, rotary switch, and row of paddles.
> Is it compatible with anything better-known?
B1700 -> B1800 -> B1900 (B1000)
It's cool because there wasn't a single macroinstruction set.
The operating system and every language had its own pagable
microcode.
Was saying on nerdnite last monday that Burroughs managed to
come up with some really interesting architectures for a really
boring segment of the computer industry (banking)
On Fri, 23 Jul 2004 18:03:49 -0400 (EDT), you wrote:
>> PLEASE! save this from the scrapper!
>
>I have decided to try. I have now talked with the owner of the system, and
>he is quite nice and reasonable. So if anyone else plans on bidding:
>
>PLEASE LET ME KNOW. NOW.
>
>By the way, he really does mean 50 some terminals and 20 some printers! We
>guesstimate at 7 skids of stuff.
>
>William Donzelli
>aw288(a)osfn.org
Go for it... I grabbed a large pdp-12 configuration, with software and
manuals, plus a bunch of spares, including a complete spare CPU, last
week, so my good Karma is adequate at present.
I'd probably have had a hack at it if no-one else did, but if you know
*anything* about Burroughs you know more than I do, so....
PS William: still haven't forgotten your LINC-8 hulk, still interested
in pursuing that, would like to come and have a look some time.
PPS anyone reading this: my pdp-12 is missing one vital feature, the
tall, narrow green door that covers the I/O terminals etc. Anyone by
any miracle got a spare? And, sorry for missing VCF-East; I screwed-up
my dates, we only got back from vacation in Scotland on Sunday. I had
planned to get back the weekend *before* VCF. Corestore will be out in
force next year!
PPPS Al: are we missing any important pdp-12 software or docs for
bitsavers?
Mike
http://www.corestore.org
'As I walk along these shores
I am the history within'
If people are curious about the details, I've been scanning a LOT
of 19xx material lately. The 1955 was the last of the 1000 series
to have a control panel with lights and switches, too (it is under
the right front door in the main cpu cabinet) and has the classic
panel layout of the earier models which were visible on the front.
d
On Fri, 23 Jul 2004, Morgan Tamplin wrote:
> I'm not sure if you received my previous message regarding my possible
> attendance at VCF East. I registered on-line "just in case". As it
> turned out, I was not able to attend for a number of reasons, the last
> being the constant rain on Thursday, July 15, which would have meant bad
> driving.
>
> The same rain caused local flooding in Peterbough, Canada. There was no
> loss of life but much property damage including some of my computer
> collection housed in a "low-lying" storage facility. I have spant the
> past week doing cleanup. Unfortunately much of my documentation (in boxes
> on the floor) was soaked beyond recovery but I would appreciate any
> advice on possible restoration (or not!) of water-damaged electronics.
> Even links to web sites or discussion groups would be helpful.
Hi Morgan.
This is very unfortunate! The best thing to do is immediately transfer
the wet documents to a freezer. This will effectively freeze-dry the
documents and give you a chance to recover them.
There have been numerous discussions on the Classic Computers mailing list
about this in the past, and so I've copied this reply to that list. I
would ask that anyone posting replies please also post a reply to Morgan
directly (see his e-mail address in the header please).
Good luck!
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
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I'm missing a radio (walkie-talkie) and two wall warts that were at VCF
East. I'm pretty sure they got stolen from my luggage by some fucker at
either the TSA or JetBlue, but on the off-chance that I somehow left them
behind and they did not get noticed, did someone else pick these up by
accident? The radio is made by Maxon...all black, two channel.
Just covering all my bases before I file a larceny report.
Thanks!
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
