Re:
>You do not get my point: Instead of adding an extra step to make PDF
>files, I think it is better to keep the raw scans.
Having scanned tens of thousands of pages, hundreds of manuals (the majority
of which are available online, free, at Howard's site), let me make a few
comments about that also:
First, the scanning is done natively in Acrobat. You don't scan individual
pages, and then create a PDF file from 100 individual files. You scan
documents, not pages, Acrobat itself is the scanning program, there are no
individual files to save. However, Acrobat becomes, in effect, a
"container" for what are almost invariably "JPEG" files, and you can export
individual JPEG or TIFF or pretty much {whatever format you want} files of
each individual page, with a single mouse click. (and then, if you want,
you can "touch them up" any way you want with any program you want, and then
reimport the "new" page, either replacing the old page or as an additional
page).
I really don't think that you understand the nature and capabilities of the
product (Acrobat) that you are criticizing.
Dave:
Rules-of-thumb like this are great to know. The fan, I'm sure, was
installed (like the IMSAI) blowing IN because the inside was caked with
dust. So, I made it an exhaust fan (no filter).
As I work on the IMSAI, which has no filter either, I will swap it
around, too.
To answer another comment at the same time, the fan does indeed have
an arrow but the arrow itself doesn't tell me if it should be facing IN or
OUT.
Rich
=============================
Richard A. Cini, Jr.
Director
Wachovia Capital Finance
1133 Avenue of the Americas
New York, NY 10036
W: 212-545-4402
F: 212-545-4589
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org]
On Behalf Of Dave Dunfield
Sent: Friday, June 17, 2005 7:01 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Altair Fan
At 21:31 16/06/2005 -0400, you wrote:
>All:
>
> OK, this is a stupid question. I'm fixing up the 8800b that I got
>recently and I removed the fan to perform some work on the power supply.
>Unfortunately I didn't mark which direction the air blows. Can someone tell
>me if it blows inward or outward?
>
> Thanks.
>
>Rich
Hi Rich,
Both of my 8800s have the fan blowing out.
The general rule is:
If the fan has a filter, then it should blow in.:
By maintaining positive internal pressure, and
filtering the air that comes in, you keep dust
from entering the box.
If it does not have a filter, it should blow out:
A fast moving stream of air will carry more dust
than a slow one. If you blow the fan in, it will
carry dust into the box which will drop out before
it exits at slower speed (because of the much larger
area of all the vents and other openings) - it also
causes dust buildup to concentrate that certain
points bacause of sudden changes in airflow (you can
often see bands of thick dust in boxes with fans
improperly installed). Going the other way reduces
the entry speed (same reason) and thus the amount of
dust that enters - what does get in tends to settle
out in a more uniform distribution.
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
On Fri, 17 Jun 2005 Graham Toal <gtoal at gtoal.com> wrote:
Hi.
> There was once a student project to write a multi-tasking operating
> system for the PDP11. Written at Groeningen University in the
> Netherlands under the supervision of professor Harry Whitfield,
> this O/S had more than a passing resemblance to the classic
> mainframe O/S, EMAS, from Edinburgh.
>
> The O/S was thought to be lost apart from small excerpts that were
> documented in the project report (online at:
> http://history.dcs.ed.ac.uk/archive/scans/guts/ )
>
> but a disk pack has turned up which has a fair chance of containing
> a working binary and sources.
>
> We think this is an RK05 pack for a PDP11:
>
> http://www.gtoal.com/images/rk05.JPG
>
> Can anyone confirm that?
It's definitely an RK05. If it is for a PDP-11 is another issue.
RK05 packs are hard sectored. If you look at the bottom, you'll find a
metal edge with grooves in it. The grooves marks sectors. A PDP-11 RK05
will have 13 grooves. If it's for a PDP-8, it will have 17. I've also seen
packs with 32 (or if it was 33) grooves. Don't know what system that is
for.
The grooves are evenly spaced, except for one, which is two grooves rather
close together, which marks the start of a revolution.
> And is there anyone in the UK who could read the drive? It may be
> in a format that is backwards compatible with one of the DEC O/Ses,
> or it may be unreadable at the FS level, just readable at the
> block level. (Which shouldn't be an insurmountable problem, given
> the scan of the documentation; also a disk image should pop right
> in to one of Bob Supnik's emulators.)
>
> If someone trustworthy in the UK would like to have a go at
> reading this drive, the keeper of the disk pack (in Edinburgh,
> Scotland) will mail it to you. It would have to be someone who
> I recognise from the list or who would be vouched for by a
> list regular. As you can imagine we're a little squirrely
> about sending the only copy to a stranger, especially in view
> of an unfortunate experience we had last year.
>
> This drive probably has not been spun up since 1978 or 79.
>
> If anyone would like to help, please email me at gtoal at gtoal.com
Well, I'm not in England, and you probably don't know me. I probably do
have the ability to read the pack, but it would require some work on my
part. The PDP-11 I have with an RK11 controller is located 80 km from me,
and it don't have any RK05 drives attached today. I have PDP-8 systems at
home, which have RK05 drives. So it would mean getting an RK05 into a car,
drive to where the PDP-11 is, hook things up, and then run.
And I'm in Sweden.
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
Hi folks,
Having got NEXTStep 3.3 and all the toys my mind naturally set about
wondering if I could compile Firefox on my slab, and having got as far as
'probably' I've decided the machine's probably not going to be fast enough
for such a modern browser.
This brings to mind the question of NEXTstep browsers, and the realisation
that there's probably only one - OmniWeb, so I've downloaded 2.7b3 but
does anyone know if there are any other browsers or later versions of
OmniWeb?
ta!
--
adrian/witchy
Binary Dinosaurs creator/curator
www.binarydinosaurs.co.uk - the UKs biggest home computer collection?
At 21:31 16/06/2005 -0400, you wrote:
>All:
>
> OK, this is a stupid question. I'm fixing up the 8800b that I got
>recently and I removed the fan to perform some work on the power supply.
>Unfortunately I didn't mark which direction the air blows. Can someone tell
>me if it blows inward or outward?
>
> Thanks.
>
>Rich
Hi Rich,
Both of my 8800s have the fan blowing out.
The general rule is:
If the fan has a filter, then it should blow in.:
By maintaining positive internal pressure, and
filtering the air that comes in, you keep dust
from entering the box.
If it does not have a filter, it should blow out:
A fast moving stream of air will carry more dust
than a slow one. If you blow the fan in, it will
carry dust into the box which will drop out before
it exits at slower speed (because of the much larger
area of all the vents and other openings) - it also
causes dust buildup to concentrate that certain
points bacause of sudden changes in airflow (you can
often see bands of thick dust in boxes with fans
improperly installed). Going the other way reduces
the entry speed (same reason) and thus the amount of
dust that enters - what does get in tends to settle
out in a more uniform distribution.
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
Greg:
The CFO of ICS confirmed that they are not the same building but across
the street. When I went to CSG a few years ago, it was the only semicon
plant in the development that I saw. I would say that ICS is probably in an
uninteresting office building.
If I were closer I would drive by out of curiosity and if I had nothing else
going on that day.
Richard Cini
Director
Wachovia Capital Finance
212-545-4402
--------------------------
Sent from my BlackBerry Wireless Handheld
-----Original Message-----
From: cctalk-bounces at classiccmp.org <cctalk-bounces at classiccmp.org>
To: General Discussion: On-Topic Posts Only <cctech at classiccmp.org>
Sent: Fri Jun 17 00:10:21 2005
Subject: RE: Commodore CSG == ICS??
>
> I saw a news clip this morning about IDT (a semiconductor
> company) buying Integrated Circuit Systems. ICS makes analog and mixed
> signal chips and owns Turtle Beach Sound. The thing that made me
> curious was
> that ICS was located in Norristown, PA. I thought to myself what are the
> chances of there being two semiconductor plants in Norristown PA.
> The first
> successor to Commodore CSG, GMT Microelectronics was also into
> mixed signal
> ASICs.
>
>
>
> ICS is located at 2435 Boulevard of the Generals,
> Norristown, PA
> 19403. The Commodore CSG was located at 950 Rittenhouse Road. So, I ran a
> Mapquest on both addresses and it appears they point to the same physical
> location in the Valley Forge Corporate Center at the corner of Rittenhouse
> Road and Van Buren. Hmmm...
>
>
>
> According to the public filings, ICS bought the property in
> 1992, which was before Commodore failed in 1994. And, it's known that GMT
> Microelectronics (now defunct; owned by former CSG engineers and managers)
> bought the old CSG plant in 1996. So, it can't be the same
> location...maybe
> there are two semicon plants next door to each other??
>
>
>
> Interestingly the president and CEO, Hock Tan, joined ICS in
> 1994. ICS was incorporated in Pennsylvania in 1976. Prior to joining ICS,
> Hock Tan was Vice President of Finance of Commodore International, Ltd.
>
>
>
> So, I emailed a contact at the Company, but I haven't
> heard back
> yet. Does anyone on the list live near Norristown, PA? It's about a 3 hour
> hike from me, so it's not that easy for me to visit.
>
>
>
> Rich
I live about 30-45 mins from there. I can take a ride by there Monday or
Tuesday if you want. I am a bit curious about this myself now too.
Greg Manuel
==> See forgotten passwords befind **** asterisks: www.SeePassword.com
> Message: 2
> Date: Thu, 16 Jun 2005 10:34:49 +0200
> From: Jochen Kunz <jkunz at unixag-kl.fh-kl.de>
> Subject: Re: PDP-8s and -10s
> To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk at classiccmp.org>
> Message-ID: <20050616103449.0e33cb3f.jkunz at unixag-kl.fh-kl.de>
> Content-Type: text/plain; charset=ISO-8859-1
>
> On Thu, 16 Jun 2005 05:53:53 +0100
> "Andy Holt" <andyh at andyh-rayleigh.freeserve.co.uk> wrote:
>
> [CDC6600 in a FPGA]
>> As the 6600 was entirely built with discrete components, not chips,
>> and yet had to be physically relatively compact, I doubt if it had
>> much more than say 20,000-25,000 gates. Nowadays that isn't anywhere
>> near high end of the FPGA ranges.
> I don't know how many gates, but the Book "Design of a Computer CDC6600"
> states on page 20: "the entire 6600 Computer contains approximately
> 400,000 transistors". It used "Direct-Coupled Transistor Logic" so there
> where way less then 400,000 gates.
> --
>
>
> tsch??,
> Jochen
>
> Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
>
>
>
>
My Xport 2.0 for Gameboy Advance programming has a programmable
FPGA with 150,000 gates. Doesn't seem to be uncommon
by today's standards.
See:
Gameboy Advantage for Non-Gaming Applicatiions
Turning a fun toy into a powerful tool
Dr. Dobb's Journal, May 2004.
Embedded Systems
http://www.ddj.com
Fred K8VDU
Here are some pictures of ONE load of the DEc documents. This after I'd
already taken some of them out of the car!
<http://www.classiccmp.org/hp/dec-docs/>
Joe
All:
OK, this is a stupid question. I'm fixing up the 8800b that I got
recently and I removed the fan to perform some work on the power supply.
Unfortunately I didn't mark which direction the air blows. Can someone tell
me if it blows inward or outward?
Thanks.
Rich
Rich Cini
Collector of classic computers
Build Master for the Altair32 Emulation Project
Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/
/************************************************************/
I was watching the Best of Eddie Murphy on Saturday Night Live. There was
a segment in which Eddie was playing the Tooth Fairy being interviewed on a
fictional interview show about career choices. The wall in the background
was a blow-up of the want ads section of the newspaper. When the camera
was focused on Eddie, that angle made the following ad visible in the
background:
DATA ENTRY CLERKS
IBM System 34; 5251 display
station operator 9 to 5:30
& 12 to 8:30 shifts available
Midtown. Salary open
:)
--
Sellam Ismail Vintage Computer Festival
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