Good Day
I have been given a chance to submit a wish list to NASA for artifacts for
the museum I started here in Houston and wanted suggestions from the list of
items you would want to see on display from NASA's past. Please email me off
list or you can share your input with the list.
Thanks
John
Rufus Turner wrote a fabulous book on single-transistor projects. I reviewed
the book for Amazon. See...
http://www.amazon.com/125-One-Transistor-Projects-Rufus-Turner/dp/0830695370
You have to be careful with early transistor projects. Most of the
transistors are germanium. After
making circuit changes, you can build these circuits with modern, silicon
parts. At minimum, the
silicon transistors require changes to the bias circuits. (Sometimes, you'll
need to make other changes,
too.) For help with the changes, refer to my page at...
http://www.hawestv.com/transistorize/germanium1.htm
Equivalents to some early semiconductor types are unavailable today. (Or
available only as used, or
new-old stock parts). Such semiconductors include tunnel diodes, unijunction
transistors and most
early FETs. Redesigning circuits with these parts could be rather difficult.
James T. Hawes
On 9 Apr, 2008, at 18:00, cctalk-request at classiccmp.org wrote:
>
> On Tue, 8 Apr 2008, Sellam Ismail wrote:
>
>> Right now I'm watching TV (hotel cable) and George Carlin is on
>> (AWESOME!!) and in his set there's an original Macintosh (or it
>> could be a
>> 512 or Plus) in the background. I don't know the name of this set.
>>
>> Isn't someone maintaining a list of these somewhere?
>
> It would be an interesting (and time consuming) project. I've
> done
> something similar with appearances of the SAGE computer equipment:
>
> http://sturgeon.css.psu.edu/~mloewen/Q7/
>
> Stan Brewer has a page for the Burroughs B-205 (mostly the
> console),
> with a list of appearances on screen:
>
> http://www.angelfire.com/scifi/B205/index.html
Mike Milsom has a page for some of the appearances of ICT 1301 consoles:
http://milsom.mysite.orange.co.uk/1301/1301f.htm
We are always on the look out for more, but we already have Doctor
Who, James Bond and Blake's Seven appearances.
While it's not a movie, if you watch carefully on the
Star Trek: Next Generation pilot episode "Encounter at Farpoint",
you'll see what appears to be a VT100 sitting on a pedestal
on the bridge. . . an interesting prop. ;-)
T
This message has been forwarded from Usenet. To reply to the
original author, use the email address from the forwarded message.
Date: Wed, 9 Apr 2008 00:39:44 -0700 (PDT)
Groups: comp.sys.sgi.hardware,comp.sys.sgi.admin
From: "fischerc at itam.cas.cz" <fischerc at itam.cas.cz>
Org: http://groups.google.com
Subject: Power Challenge XL available
Id: <5df4658f-99e8-43a5-b318-153140a98ba1 at k13g2000hse.googlegroups.c
om>
========
Hi everybody
We have a rather big piece of HW: SGI Power Challenge XL (6 x R8000 at 75
MHz, 1G ram, a few 2-4Gb SCSI discs) available here in Prague (CZ,
EU).
The computer was cleanly shut down on May 5, 2004 and since that time
was not touched. We intend to scrap it now. If anybody wants to have
some spare parts or even the complete beast, let me know within 1-2
months.
I regret to say, that this was the last SGI machine we have here.
Anyway, I would like to express my thanks to the SGI admin comunity
for all the help I've received in past years.
Sincerely yours,
Cyril F.
HP-IB, GP-IB and IEEE-488.2 seem to refer to the same more-or-less
compatible bus architecture.
http://en.wikipedia.org/wiki/IEEE_488
I'm hoping to get GP-IB storage setup on my HP-1000 systems eventually.
I've picked up:
HP 59310-60101 "BUS INPUT/OUTPUT INTERFACE" - low speed GP-IB card
HP-9122C - dual 3.5" GP-IB floppy drive (Thanx Stan!)
However I don't have the cable to wire from one to the other. The drive
has a standard IEEE-488 connector:
http://en.wikipedia.org/wiki/Image:IEEE-488-Stecker2.jpg
But the controller has a 50 pin card edge connector.
Anyone have a spare cable?
I've been looking at some GB-IB software tools:
* http://www.hp9845.net/9845/projects/hpdrive/
emulates GP-IB drives on win32
* http://www.hp9845.net/9845/projects/hpdir/
read and write to some GP-IB media and filesystems from win32
* http://linux-gpib.sourceforge.net/
Linux GP-IB drivers and libraries. This does NOT include drive emulation
or access, but it aimed at sensors and other devices that speak GB-IP
Not all drives use the same protocol over GB-IP. Bitsavers has documents
that cover the AMIGO and CS/80 command sets:
* http://www.bitsavers.org/pdf/hp/disc/
Lots of drive docs including:
* http://www.bitsavers.org/pdf/hp/disc/subset80_Jul83.pdf
SS/80 and by reference some of CS/80
I do not currently have a GP-IB interface for a PC. The National
Instruments PCI-GPIB cards seems popular on eBay. There are also
USB-GPIB converters from NI and others. The ISA or SBus cards go for
less, but then I need to find a machine with one of these slots. :)
I understand that HP-7920 and HP-7925 drives were AMIGO flavor GP-IB
drives. Perhaps the HP-7905 and HP-7906 as well? I'm not quite sure
where the GP-IP buss comes in the picture. There is normally a contoller
(13037-60028) interface between the drives and the host computer
interface (02640-90042?) I presume that the bus on one side of the 13037
is IEEE-488 but I'm not sure which.
Can the 026xx cards directly attach to GB-IP drives?
How does the shared storage through a 13037 controller work? are they
all just IDs on GB-IB?
Any insight appreciated. Any hardware donations greatly appreciated. :)
--
Tim Riker - http://Rikers.org/ - TimR at Debian.org
Embedded Linux Technologist - http://eLinux.org/
BZFlag maintainer - http://BZFlag.org/ - for fun!
> Date: Tue, 8 Apr 2008 05:59:37 -0700
> From: dwight elvey
Will all respect for your efforts, Dwight, at least you knew the
origin of the diskette and had a faint idea of what might be on them.
You haven't lived until someone shoots you a bunch of diskettes with
everything being unknown--the modulation technique, the code
representation, the data rate or track spacing or byte width, much
less the file system.
Your Polymorphics floppies sound a lot like a bunch of diskettes I
got in recently from a manufacturer's in-house PCB stuffing robot.
The format appears to be a "roll your own".
It's hard to say which is the most fun--diskettes discovered to be
GCR where you have no idea of what the group size is, nor what the
groups correspond to. Or diskettes written on something like a
typewriter where the code's not ASCII, nor does A immediately precede
B--and you have nothing that says "this is a printout of what's on
the diskette".
Hint: You start with a statistical analysis of the pulse stream and
go from there.
For me, it's a lot of fun, ferreting out things by bits and pieces
until the big picture emerges.
Cheers,
Chuck
> Date: Mon, 07 Apr 2008 14:04:01 -0400
> From: Sridhar Ayengar
> That's bull. There are ways to make grep output something like "No
> matches" without breaking a pipeline that uses it. I suggest that
> perhaps those who say "They're the kind of thing people who don't use or
> understand pipes will say." are the ones who truly don't understand pipes.
If anything, my issue with the evolution of *nix is that the original
philosophy of "write a bunch of simple tools and hook 'em together
via pipes" seems to have been deprecated in the almost 30 years since
I began using Unix. There seems to be a trend of proliferating
options.
Quick, who can recite from memory all of the switches and their
meanings for GNU tar? I can't. Who can understand the tar man
pages? Who knows it to be accurate for the particular incarnation of
tar that they're using?
Cheers,
Chuck
Somethings a miss here... resending...
On Mon 04/ 7/08 7:36 PM , "Daniel Snyder" sent:
To all,
I am unloading all of my PS/2 gear, most of the systems may be too
heavy to
ship, but will
part out. I'm out of space and my real interests have always been
DEC,
almost 30 years now.
This is by all means not a complete list, I will continue this list
as I
uncover more. All has been
stored indoors in a dry and heated area.
2 - Model 25's B&W (ISA)
2 - Model 30's (ISA)
1 - Model 65 tower (MCA)
1 - Model 80 tower (MCA)
1 - Model 50 desktop (MCA)
memory modules, video, esdi drives, scsi drives, some good working
floppies.
I have most
if not all of the config disks and copies on cd.
I think the 80 has a worm drive and colorado/maynard? QIC tape,
spare
motherboards for
the 50, 60, 70 and 80.
Would really prefer local pickup (or relay or within 100 miles)
That's all for now
Dan Snyder
Butler, PA 16001
