I've got a couple of ELT-320s. The PS brick says Model PSA-124, input
110v-240v(a)1.5A, output 12v(a)4.2A.
From: Ethan Dicks <erd_6502(a)yahoo.com>
> I know there's others here and on the SBC6120 list that are also
> looking for them now. Hopefully the supply will continue to trickle
> them out now and then.
Hmmm...I'm in on the sbc6120. I was actually thinking of building it into a
terminal case...
Hi Dan.
AFAI can tell from memory, you do the following.
1) find the opening in the front that is a little
larger than the other openings (for cooling).
2) Use a screwdriver to push the plate that is
behind the opening mentioned in 1).
3) While that plate is pushed in, you can lift the
top cover including the electronics of the RA82.
4) In the middle yoy see the large (black) cilinder
thing. That is the HDA. When you stand in front
of the drive you see a small lever at "6 o clock".
Rotate that level 180 degrees to lock the heads.
You must lift the level at the end a little to be
able to rotate it. On the HDA is a text that tells
you the position of the level. (At least, that is
the case with my *RA81*.
5) At the right hand side, near the chassis plate of
the drive is a handle. This handle releases/sets
the drive belt free/tension to the HDA.
I do not know if the tension should be released
when you transport the drive. If you are not going
to use the drive for say, several months, you could
release the tension to prevent deforming (flatten)
the drive belt at one location.
Take care, RA82's are heavy,
- Henk.
> -----Original Message-----
> From: Dan Veeneman [mailto:dan@ekoan.com]
> Sent: vrijdag 7 februari 2003 23:04
> To: cctech(a)classiccmp.org
> Subject: Disk drive head locking (DEC RA-82 and HP 7920)
>
> Hello,
>
> I'm scheduled to pick up a pair of DEC RA-82 drives along
> with an HP 7920 drive in the next couple of weeks.
>
> I don't have any technical documentation for either of these
> drives, but I'd be very interested in learning the proper
> procedure for locking down the heads on these drives
> prior to moving them. If anyone has the steps to take
> for either or both of these drives, please drop me a note
> or point me to the proper archive.
> Cheers,
>
> Dan
> www.decodesystems.com/wanted.html
Dan's Pics at
http://www.decodesystems.com/old-ics.html
The first white mystery chip is General Instruments ROM. A while back someone
posted a link to an IC-IDentification database which I downloaded. It has
helped me identify some of these older chip logos.
The second mystery chip is an EPROM identical to the ones on a S50 card I
just sold on ebay.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=2305518019
Mine were labeled as AMD with an unusual part number. I will leave the pics
up for a while longer.
Now to go look at Dan's want page....
Paxton
Astoria, OR
In a message dated 2/10/03 11:03:12 PM Pacific Standard Time,
philpem(a)dsl.pipex.com writes:
> Would that happen to have been the IC-ID database program from my website?
>
Yes, it is. Sorry for the belated thanks but thanks. I use it occasionally
and it has helped me identify some of the older chips like Dan's (and mine)
General Instrument chips.
Thanks for posting the link so long ago, too.
Paxton
Astoria, OR
Good question,
french dressing, nah - lol
belt dressing - not sure if it even softens the belt
but it does swell the belt.
armor all - may work - might soften the platen - but
it leaves a very slick coating - i wonder if the paper
will stay in one place as the platen moves.
the type "ball" hammer also has a rubber "button" that
slips over it - i know those and the platen were once
replacable - try a search for "teletype" on the web.
i know the nadcomm meseum http://www.nadcomm.com/ has
a link for teletype paper tape and paper on it.
the nadcomm page links are near the bottom under the
heading "Teletypewriter Supplies"
Bill
Date: Sat, 08 Feb 2003 14:51:14 -0700
From: ben franchuk <bfranchuk(a)jetnet.ab.ca>
To: cctalk(a)classiccmp.org
Subject: RE: asr 33 platen
Reply-To: cctech(a)classiccmp.org
George R. Gonzalez wrote:
> I need some suggestions! Should I try ArmorAll
(known to soften
rubber,
> given time), "Platen cleaner", "belt dressing",
"french dressing", or
what?
I would try 'rubber renue' from M.G. Chemicals. Ben.
--__--__--
I believe it was Alpha Microsystems, and IIRC the PC version was sold
through Radio Shack. I believe I may still have an old AM-610 (S-100) VCR
interface board in the basement if anyone is interested (free to a good
home)...
Larry
> -----Original Message-----
> From: cctalk-admin(a)classiccmp.org
> [mailto:cctalk-admin@classiccmp.org]On
> Behalf Of Andrew Strouse
> Sent: Monday, February 10, 2003 1:09 PM
> To: cctalk(a)classiccmp.org
> Subject: VHS Tapes as storage.
>
>
> Hi, I seem to remember reading in popular electronics, about
> software that
> would let you use a vcr to backup your computer. I think it
> was about 10
> years ago. Does anyone remember or know anything about this.
> My searches on
> google have turned up nothing. Thanks for any help you can provide!
>
> Andrew Strouse
> From: Joe <rigdonj(a)cfl.rr.com>
> It says that the MIPPs ICs are standard MIPPs processors
> but built to Mil-Standards.
That would actually be MIPS processors. The MIPS architecture came out of
Stanford and stands for (supposedly) "Microprocessor without Interlocking
Pipeline Stages".
>>I've actually got some Performance Semi 1750A chipsets...I must think of
>>>something to do with them...
>
> I've got a few as well. I also just found a 1753 (MMU IIRC)
Yup.
> and 1754 (I/O interface IIRC).
Usually called a PIC (peripheral interface controller).
Let me know if you ever want to get rid of those...I have several complete
chipsets, but can always use spares.
> In case you'r enot aware of it, the 1750 is a "standard"
> processor that the government is trying to use in all
> aircraft and aerospace applications.
Well...it was the standard a decade or two ago; the standard came out around
1980, AFAIK. I don't think that there has been a hard requirement for 1750A
in military contracts for a long, long time. It's only a 16-bit processor,
after all, and almost noone makes it any more (Performance doesn't). It,
like the JOVIAL programming language often used to program it, are probably
only around for maintenance and upgrades of existing platforms.
Ken
I put "VCR Backup" into Yahoo!, and this came up...
http://www.viscountvideo.com/danmere.htm
Hope this helps..
Regards,
Al
> From: "Andrew Strouse" <kittstr(a)access-4-free.com>
> To: <cctalk(a)classiccmp.org>
> Subject: VHS Tapes as storage.
> Date: Mon, 10 Feb 2003 13:09:15 -0500
> Reply-To: cctalk(a)classiccmp.org
>
> Hi, I seem to remember reading in popular
> electronics, about software that
> would let you use a vcr to backup your computer. I
> think it was about 10
> years ago. Does anyone remember or know anything
> about this. My searches on
> google have turned up nothing. Thanks for any help
> you can provide!
>
> Andrew Strouse
Well I didn't find the Holy Grail but this is close! I went to a hamfest today and in a box of junk I found the operating program for the HP 9877 Mass Memory unit! That's the box that has up to four tape drives installed and was used to mass duplicate HP 9825 tapes at the HP factory. The 9877 is a rare bird and was only offered to the public for one year (1979 IIRC) but I've got two of the 9877s, Tony D has one and NASA KSC has one but NO ONE has been able to locate the operating program for it till now. The tape APPEARS to be in good condition but you know how HP tapes are :-(
The full name of the tape is "Duplicator 9825A/9877" and it's part number is 09877-10002.
Other INTERESTING finds (in the same box no less!) were a new DC-300A tape (as used on the IBM 5100 and Tektronix 4051), a Plot 50 tape and Plot 50 Backup tape and an Alignment tape. All three are for the Tektronix 4051 computer.
Wahoo! A good ClassiComp day!
Joe
Innfogra(a)aol.com wrote:
> It works with the HP 9825, 9835 & 9845 series of computers from the early
> 1980s. On the other end is an Amphenol 50 pin female connector, similar to
> early SCSI 1 connectors.
WAG from the name: it's a widget to connect a 98x5 into an HP Shared
Resource Management (SRM) network. I vaguely recall that there was a
coaxial SRM bus cable, and some SRM interfaces had the BNC connector
for the bus cable while others had a 50-pin Amphenol connector and
expected to have a transceiver-like device between the Amphenol connector
and the coax.
I've read about this stuff in manuals, but never used it or even seen
it in use. And I didn't know you could hook a 98x5 up to it, my
readings about it have been in the context of HP9000 series 200 and
300 systems.
-Frank McConnell
