Surplus to requirements: SynOptics Lattishub 2813. This is a managed
10baseT hub, with 16 x 10baseT ports, modem port (for remote management),
RS232 port (local management), and an AUI port. Cosmetically good, in
perfect working order, and I even have the manual, but I've replaced it
with some fancy black ATM/100baseTX kit. Free to collect from York, or pay
carriage (not too expensive; it weighs about 3.5kg).
--
Pete Peter Turnbull
Network Manager
University of York
On Dec 16, 21:52, pete wrote:
> and the female "pins", does on the cable from to the PDP-8/E's Berg
^^^^ "goes" ^^ no, "from" was
sufficient
See, I'm getting so excited about finally connecting all this together, I
can't even manage basic spelling and grammar ;-)
--
Pete Peter Turnbull
Network Manager
University of York
>From: Joe <rigdonj(a)cfl.rr.com>
>
>At 08:26 PM 12/14/02 -0800, you wrote:
>>I was trying to get some information on this old B1702A chip. I know
>>it is a 256x8 chip but someone told me that "B" marked chips are
>>normally gray with tin leads.
>
> I was wondering about the "B" markings. I was sorting a bunch of
surplus chips a few days ago including a big pile of 2716s and I found one
marked "B 2716". (The complete markings are "i B2716 023D3-V (c) INTEL
'77") It has a large square window of frosted material and the window is
rasied above the IC surface. All the D 2716s have smaller round clear
windows that are flush with the IC surface. The B part and most of the D
parts all have tinned leads and gray bodies.
>
>>
>>This one is white ceramic with gold leads. I tried finding something
>>on this but have not found this particular marking and colors.
>>Anyone know the skinny?
>>
>>http://www.msdsite.com/temp/1702a2.jpg
>
>
>>http://www.msdsite.com/temp/1702a.jpg
>
> I looked at this picture and saw the "1602" die marking. The Intel 1602
was a PROM and not an EPROM and other than being non-eraseable was
completely compatible with the 1702. I suppose they used the same die but in
different packaging. I'm guessing that your 1702 is an early one. I just
sold a 1602 to a collector, I think it was the only one that I had ever
seen.
>
Hi
I have either a 1702 or may it is a 1701, non-A, someplace.
There were not many of these made.
Most all of the early 1702's were put into the gold lead
with the clear quartz windows, glued on. It wasn't until
later that they started to use the frosted glass and then
later still when they used the monolithic ceramic/quarts
that had the clear( but distorted ) window.
Dwight
Got the following:
1. Another joystick for the Micro Genius IQ150 Perfect console. ($3)
2. Radio Shack TRS-80 Pocket Computer Cat no. 26-3501, not tested yet. ($2)
3. OT: iMac no KB or mouse with it but it's a 400 MHZ/521k LC/128MBRam/13gig
HD/DVD/2 Firewire/ pretty clear blue see-thru color. ($15) model M5521
4. Sega Genesis 32X game unit. ($5)
5. About 8 different mice and 12 mousepads for the collection. (Free to 99
cents)
J.C.Wren wrote:
> ...< a lot of soldering wisdom, then>...
> Probably nobody has really read this far, and I can't think of anything
>else at the moment, and my fingers are tired.
Twice. Then saved it for good measure. Thanks! I'll start saving for a Metcal.
- Mark
On Sun, 15 Dec 2002 ard(a)p850ug1.demon.co.uk (Tony Duell) wrote:
> > On Thu, 12 Dec 2002 ard(a)p850ug1.demon.co.uk (Tony Duell) wrote:
> >
> >
> > > > Huh? No. Actually, the data track itself is used as the servo signal. The
> > > > head centers in on the track by centering on where the amplitude is
> > > > strongest.
> > >
> > > Do you have any evidence for that?
> >
> > Yup. I quote:
> > "1.3.3.2 Sector Format - As shown in Figure 1-3, each sector contains:
>
> OK, let me quote the RL01/RL02 Disk Drive Technical Manual.
[...]
Seems like you had the better manual at hand. I'll check it out tomorrow,
when I'll pass by where I have that manual.
> > * Servo information for head positioning
>
> Sure, I'll agree the servo bursts are in the sector header. They are just
> not radially aligned with the data track. I guess you're working from a
> manual that oversimplifies things.
RL01/RL02 Disk Subsystem User's Guide.
> > Eh. This is on most controller not something you check or take care about
> > in software, but hardware. When you specify to the controller (for
> > instance en RK11) that you want track 10, it both figures out how many
> > tracks the heads need to move, and in which direction. It then checks that
> > you really are at the right track, otherwise you get an error back.
>
> I am _darn_ sure the seek function on an RK11 doesn't check sector
> headers (I would have to actually dig out the prints to be sure). I know
> I've used it to move heads around on the alignment pack, which doesn't
> have convnetionally recorded headers. Quite apart from the fact that an
> RK05/RK11 can seek on a blank disk so as to be able to format it (a blank
> RK05 pack really is blank).
We must have been talking past each other here. I didn't mean that the
controller/drive made a check on the disk that it was on the right
track. The drive *knows* it's on the right track, without checking. Like
you said, the RK05 can seek on a blank disk, and format it.
> > The RL11 have no such sophistication. You request a head move, and the
> > drive hopefully does it, and then you can carry on with the next
>
> That's what most controllers do. The difference is that on the RK11, you
> specify the cylinder you want to move to, and the drive (hopefully) goes
> there. You then have to check headers. On the RL11, you have to work out
> how many cylinders to move and in which direction (That bit of the
> calculation is done automatically by the RK system).
No, on an RK11 (well, admittedly I've mostly played with the RK8E) you
really don't ever check the header yourself. In fact, you can actually
start the disk transfer even if you're not on the right track. The drive
will do an implicit seek as a part of the transfer for you. Also, track
switching can occur in the middle of the transfer, without you seeing or
caring about it. Not on the RL. You cannot even switch heads in the middle
of a transfer.
> > information is constantly checked by the controller, it should be
>
> Eh, if you're making your own controller, you don't need to check the
> headers...
True. But noone said we were going to build our own controller until
now. :-)
> > Basically, if you don't have the servo information correct on the platter,
> > the drive will signal errors to the controller, and the controller which
> > just miserably fail unless header infomration keep coming in when the
> > drive is running.
>
> Ifyou don't have the correct servo information, the drive won't keep the
> heads loaded (well, it certainly won't keep them on-track). At this
> point, no controller could do anything useful with the drive.
Unless you have a drive without servo information, such as the RK05.
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
Thanks for putting up with my earlier ad. All the VAXen equipment I posted about has been claimed.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
ARS KC7GR (Formerly WD6EOS) since 12-77 -- kyrrin(a)bluefeathertech.com
"I'll get a life when someone demonstrates that it would be superior
to what I have now..." (Taki Kogoma, aka Gym Z. Quirk)
>It's always 'Deck' round here, at least amongst hackers. DEC employees
>pronounced it 'Digital' and tended to get annoyed when I refered to the
>company as 'Deck'.
You obviously met the wrong employees :-)
>Unfortunately I don't know (remember) which version was used
>to create the disk image... it was done about 8-10 years ago.
If you have access to OpenVMS, you can run BACKUP/ANA
to produce a whole bunch of extra information about
what is in there.
Antonio
LOCAL PICKUP ONLY -- SHIPPING NOT AVAILABLE DUE TO SIZE/WEIGHT
----
Fellow Classiccomp'ers and VAXen-lovers,
I need to make room. I've got three MicroVAXen in great shape that I want to get out of here. One is a MicroVAX 3 in the BA123 (end table) cabinet with 32MB RAM. I've SCSI-fied it with a Sigma RQD11S card. Said card will handle both disk and tape drives. In fact, this particular machine already has NetBSD (don't remember which version) loaded.
Second machine: VAX 4000-200 in the skinny tower cabinet. This one also works well, though I don't remember how much memory it has. It had a CMD CQD220 SCSI card in it which has been transferred (by me) to Machine #3, which is...
A VAX 4000-400 in the 'wide' tower cabinet. Also works well, and I think it's got either 48 or 64 megs RAM.
ALSO INCLUDED: MicroVAX hardware service manuals, whatever spare DEC'ish boards I have left, etc.
Here's the deal; I'm located in Kent, WA (southeast of Seattle by about 35 minutes). I don't have the facilities to palletize this stuff or get it shipped, so we're doing LOCAL PICKUP ONLY.
Because of the SCSI cards, and the fact that there's lots of extras. I'm going to ask a price of $150.00 or best offer for the whole works. YOU PICK UP -- SHIPPING NOT AVAILABLE.
You can contact me via E-mail at the human-readable address in my signature block. If your reply bounces, use my backup address of kc7gr (a/t) qsl dot net.
Thanks much.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
ARS KC7GR (Formerly WD6EOS) since 12-77 -- kyrrin(a)bluefeathertech.com
"I'll get a life when someone demonstrates that it would be superior
to what I have now..." (Taki Kogoma, aka Gym Z. Quirk)
I have N* software on floppies plus a bunch of hard-sectored 5.25"
floppies... Interested?
Will J
_________________________________________________________________
The new MSN 8: smart spam protection and 2 months FREE*
http://join.msn.com/?page=features/junkmail
On Dec 14, 21:40, Merle K. Peirce wrote:
>
> I have arrived. I was just spammed by Ron Popeil.
:-) But did you buy <whatever it was>?
--
Pete Peter Turnbull
Network Manager
University of York
Megan,
I'll take it off-list..
--f
> -----Original Message-----
> From: Megan [mailto:mbg@TheWorld.com]
> Sent: Sunday, December 15, 2002 3:00 PM
> To: cctalk(a)classiccmp.org
> Subject: RE: Looking for pointers to specs...
>
>
> >Which version of VMSbackup are you using to read the tape?
>
> Unfortunately I don't know (remember) which version was used
> to create the disk image... it was done about 8-10 years ago.
>
> Megan Gentry
> Former RT-11 Developer
>
> +--------------------------------+----------------------------
> ---------+
> | Megan Gentry, EMT/B, PP-ASEL | email: mbg at
> world.std.com |
> | |
> |
> | "this space | (s/ at /@/)
> |
> | unavoidably left blank" | URL:
> http://world.std.com/~mbg/ |
> | | "pdp-11 programmer - some
> assembler |
> | (DEC '77-'98) | required." - mbg
> KB1FCA |
> +--------------------------------+----------------------------
> ---------+
>
>Which version of VMSbackup are you using to read the tape?
Unfortunately I don't know (remember) which version was used
to create the disk image... it was done about 8-10 years ago.
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com |
| | |
| "this space | (s/ at /@/) |
| unavoidably left blank" | URL: http://world.std.com/~mbg/ |
| | "pdp-11 programmer - some assembler |
| (DEC '77-'98) | required." - mbg KB1FCA |
+--------------------------------+-------------------------------------+
On Dec 15, 13:48, Fred N. van Kempen wrote:
> Oh- and the real fun thing is: both one of the current UPS'es, and the
new
> ones, have ethernet SNMP monitoring.. I can actually ping my UPS:
> which is truly fun :)
Yes, it is. Our "big" UPS (30kVA, 3-phase, for 30 minutes) has that via an
external box, and our "little" UPSs have it built in (USHA cards). And I
get to play^Wlook after them (well, it's a network device, right?) There's
a standard MIB for UPSs with all sorts of useful things in it. Anyone who
has a serial-only UPS should be able to rig something up with the NUT
(Network UPS Tools) software: http://www.exploits.org/nut/ or by using
something like a Sinetica NetCom box: http://www.sinetica.co.uk/ Every
home should have one ;-)
My main server at home is now on an APC UPS. It didn't used to be, because
it had quite a long uptime when I got that particular UPS, and I didn't
want to spoil that. I was waiting to see it roll past the magic 10000
hours (about 416 days; and no, it's not a PC) to switch it over -- and the
day before that, we had a power cut :-(
--
Pete Peter Turnbull
Network Manager
University of York
Can anyone point me to a description of the file format for a
VMS backup file? I need to be able to read one on a unix (linux)
system, but 'vmsbackup' doesn't recognize the contents of one of
the vbn's and ends up core-dumping...
(alternatively, is there a version of vmsbackup or something which
can read full vms backups)
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com |
| | |
| "this space | (s/ at /@/) |
| unavoidably left blank" | URL: http://world.std.com/~mbg/ |
| | "pdp-11 programmer - some assembler |
| (DEC '77-'98) | required." - mbg KB1FCA |
+--------------------------------+-------------------------------------+
> Any reasonable UPS will be heavy, because big batteries are heavy :-)
Yes. Although my machine room currently runs on two 2400VA boxes, (note:
we use 220VAC here, not 110..), they will soon be replaced by two new
systems that do 3000VA each, with a 500VAC feed. The fun part is, that
they have modular run time by adding battery boxes ("stack em up!"), AND
(what I just learned half an hour ago! %-] they have a provision for
connecting an external generator. Which I have. :)
(OKOK... legally I am not allowed to run that thing for extended periods
of time, but I _do_ have permission to have it fired up for emergency
purposes, soo... hey! ;-)
I guess I'll spend the week between xmas and new year's rewiring, and doing
power measurements on the circuits....
Oh- and the real fun thing is: both one of the current UPS'es, and the new
ones, have ethernet SNMP monitoring.. I can actually ping my UPS:
H:\>ping ups
Pinging ups0.microwalt.nl [10.0.95.7] with 32 bytes of data:
Reply from 10.0.95.7: bytes=32 time=10ms TTL=255
Reply from 10.0.95.7: bytes=32 time=10ms TTL=255
Reply from 10.0.95.7: bytes=32 time=10ms TTL=255
Reply from 10.0.95.7: bytes=32 time=10ms TTL=255
Ping statistics for 10.0.95.7:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 10ms, Maximum = 10ms, Average = 10ms
H:\>
which is truly fun :)
--fred
Hi,
Regarding the being able to work around expensive studios to produce
music: yes. I know a (computer-audio-) guy who spent EUR 50K on a
bunch of digital "studio" audio equipment (mixing, levellers, edit
workbench, etc) and computers for work and storage (I did that part
for them), and he then teamed up with an "analog" audio guy who set
up the "analog" part of their setup (mikes, recording room, whatnot.)
They now make a good living doing recordings and mastering sessions
for artists in Holland and Belgium- both starting ones __and__ some
known ones. They recently asked me to again help them with setting
up a digital music distribution and delivery system, as their
"customers" (artists) asked them to also act as their "record
company" using New Media. When they have done the legal legwork,
I'll be building an online record store for them, with an almost
direct link to the studio.
So... yes. It can be done, and it can work well. The traditional
companies in that field are scared shitless, because THEY HAVE NO CLUE
as to what's hitting them.
Youth today _really_ doesn't care [anymore] about 101% [sic] pure audio
quality, they are _fine_ with 192Kbps MP3/Pro files which then can then
stuff onto a CD. I am, too, often. The proposed "album" price in the
"shop" above was EUR 8 to EUR 10 (about same for US$), and their short
investigation has shown that customers were OK with that, including the
fact that they had to download the stuff.
[Optionally, the "shop" will have a CD-R/DVD-R burning service, by the
way, for, I believe, EUR 2.5 plus shipping]
The latest rumor is, that a wellknown Dutch concert managing agency has
contacted them whether or not they would be able and willing to handle
_all_ their live recordings of gigs, including.. yes, the "shop".
Traditionally, "live albums" are sucked dry by studios and recording
companies- the artists get very little out of them. This "New Shop"
(hey, that sounds familiar.. hmm...) doesn't have to, so artists AND
fans benefit.
Again, dunno where this is going, as it's not there yet. I am a consultant,
so, advise on the technical issues. But, while busy doing that, I did
notice that the "other" guys were scared shitless _all_ the time, and
didn't know what to say _most_ of the time I was there...
The same most probably goes for the video/movie industry... dunno about
that world, but there, the "distribution channel" is even more powerful....
Cheers,
Fred
On Dec 14, 10:50, Sellam Ismail wrote:
> On Sat, 14 Dec 2002 pete(a)dunnington.u-net.com wrote:
>
> > I've decided that the "big" UPS which has been sitting in my workshop,
> > unused, for almost a year, really is surplus to requirements, so it's
free
> > to anyone *who can collect it* and feels like replacing the batteries.
> I also have a huge UPS. It's a Sola 5KVa unit. It has sat dormant in my
> data closet for years now. I never got around to buying new batteries
for
> it (too expensive and I don't know if the Sola unit itself has problems
as
> it was arcing at one point).
>
> Is it worth rehabilitating or should I finally just junk it? The bitch
is
> heavy (over 100lbs).
Any reasonable UPS will be heavy, because big batteries are heavy :-)
Whether it's worth doing anything with it depends on whether you need a
high-current or long-duration UPS. That one would allow you to boil the
kettle for a cup of tea (or run the coffeemaker) during those power outages
when there's nothing else you can do :-)
It's not that hard to come by second-hand UPSs, the usual fault being that
the batteries have gone bad (sulphated), and that's usually because people
don't cycle them properly. There's some evidence to suggest that --
providing they've not gone too far -- high current high-frequency pulses
can rejuvenate lead-acid batteries, and there are some circuits around
designed to provide the remedy. I built one, and it seems to work, so long
as the cells have *some* life left. Measure the voltage on each cell. If
it's below 1V, or the cell looks at all swollen or distorted, it's past
redemption.
http://www.shaka.com/~kalepa/desulf.htm
--
Pete Peter Turnbull
Network Manager
University of York
In a message dated 12/14/02 8:29:58 PM Pacific Standard Time,
ipscone(a)msdsite.com writes:
> http://www.msdsite.com/temp/1702a.jpg
Well, the die on this one is clearly? marked "intel" with the early dropped
"e".
Is there anything stamped on the bottom of the chip, a date code or ?
I really don't know the variations but I would not be surprised to see a
white and gold version in any of intel's early chips. I am no help there.
Paxton
Astoria, OR
Who is digging out his microscope to look at his 1702s.
Which version of VMSbackup are you using to read the tape?
I seem to have several.. V3.0, 3.1, 3.1.1, 4.1, 4.1.1 and 4.2 ...
--f
> -----Original Message-----
> From: Megan [mailto:mbg@TheWorld.com]
> Sent: Sunday, December 15, 2002 6:58 AM
> To: cctech(a)classiccmp.org
> Subject: Looking for pointers to specs...
>
>
>
> Can anyone point me to a description of the file format for a
> VMS backup file? I need to be able to read one on a unix (linux)
> system, but 'vmsbackup' doesn't recognize the contents of one of
> the vbn's and ends up core-dumping...
>
> (alternatively, is there a version of vmsbackup or something which
> can read full vms backups)
>
> Megan Gentry
> Former RT-11 Developer
>
> +--------------------------------+----------------------------
> ---------+
> | Megan Gentry, EMT/B, PP-ASEL | email: mbg at
> world.std.com |
> | |
> |
> | "this space | (s/ at /@/)
> |
> | unavoidably left blank" | URL:
> http://world.std.com/~mbg/ |
> | | "pdp-11 programmer - some
> assembler |
> | (DEC '77-'98) | required." - mbg
> KB1FCA |
> +--------------------------------+----------------------------
> ---------+
>
>What I'm referring to is the recording industry claiming their sales have
>dropped. First of all, I want to see hard data to prove this. Second, I
>want this dat to be from an independent auditor. Lastly, I want an
>independent analyst to confirm whether this is because of rampant CD
>copying on college campuses or if it is as a result of the economy.
I can't link to the report, because I don't recall where I saw it
(actually, I think I saw it in a local newspaper)... but there was one I
read recently that did site hard numbers to show that sales of CDs from
record stores have dropped over the last year (based on sales $$, they
didn't quote counts, so it could be from lowered prices, but since I
haven't noticed CD prices going lower, I doubt that). The numbers were of
course given by the RIAA, with no source quoted (so the assumption is it
is from their own internal book keeping).
However, the article also nicely pointed out, that the figures the RIAA
were quoting were specifically for sales from record stores (ie: Tower,
Sam Goody, places like that). When asked about sales from ONLINE stores
(like Amazon.com), the RIAA said they didn't have those figures
available. Nor did they have available the sales from recording industry
web sites that offer MP3 purchases or similar.
Since they were claiming sales of CDs were down only something like 8 or
9 million... I think it is pretty darn reasonable to say that those
missing dollars from store fronts could easily be accounted for from
online sales (and far more $$ I am sure).
This is the stuff you have to be VERY VERY careful to read between the
lines when looking at anyone's "facts and figures". You can distort this
kind of data into telling you anything you want it to say (I work in
Market Research... we are experts at distorting reality with numbers!)
-chris
<http://www.mythtech.net>
>You think the *public* has control over that? Yeah, yeah, people vote with
>their wallets, but before they do that the candidate CDs have to be made
>available for puchase. The record companies control that, and they also
>control the amount of promotion that a particular candidate gets.
>Promotional agencies like MTV play right into the herd mentality of pop
>music buyers, convincing a few that the herd is buying album X. Those few
>buy album X, and then the rest of the herd follows suit. Essentially people
>are *told* what to buy.
As much as it was a farce comedy, the movie Josie and the Pussycats shows
almost exactly what the RIAA/MPAA would love nothing more than to have
(and discount the subliminals, they are just about there already).
>Do you think that P2P is going to damage this control system?
Potentially. Right now, the public has no choice... if a studio doesn't
want to promote an artist (can we still call them that?), the public has
no access to their music. P2P removes the studio from the flow control.
It is now possible for a small garage band to record their own music...
AND get wide spread distribution via P2P sharing. Essentially, the need
for the recording studio at all is starting to disappear.
THAT is what scares the hell out of them, and THAT is the heart of all
their complaints and cries for new laws. They are doing nothing more than
trying to secure the need for their own existance (with the wonderful
side effect of being able to have total control over what we see and hear
at all times)
-chris
<http://www.mythtech.net>
This is a bit off-topic, because it's only a few years old.
I've decided that the "big" UPS which has been sitting in my workshop,
unused, for almost a year, really is surplus to requirements, so it's free
to anyone *who can collect it* and feels like replacing the batteries.
It's a Powerware Prestige 6000, with two battery boxes, software, manual,
and various cables. Input is rated 200/208/220/230/240V AC at 19A (power
factor 0.9) single phase, output is 200/208/220/230/240V AC at 19A (max
3000W). The battery boxes are each rated 120V DC 50A and 5AH capacity.
Size is about 40cm deep x 25cm wide x 28 cm high for the control box and
the battery boxes are half the height, so 40 x 25 x 14 each. They all
stack nicely together (in any sensible order).
I have used it, but the batteries (10 x 2V gel cells in each box) do need
replaced -- most will not hold any significant charge/voltage.
It needs to be gone by Christmas, too, or it's going in the skip.
--
Pete Peter Turnbull
Network Manager
University of York