HDTenEightyP/NetNews huggingface dataset:
From: SYSTEM@BUPULA.BU.EDU (John Rassulo)
Newsgroups: comp.sys.dec
Subject: Help!! ECC Memory Problems from HELL!!
Date: 27 Aug 92 21:22:01 GMT
Organization: BOSTON UNIVERSITY, Pulmonary Center
X-News-Reader: VMS NEWS 1.22

Can anyone out therehelp me with an ECC memory problem??
I have a MV3600 with 16MB of DEC memory. I keep getting: 

High CRD Error Rate
DMA Error
Correctable ECC Error
Physical Page Add = 07368(x)
Ecc Error Syndrone = 3D(x)
Bank 6
Memory Module #2 .....and on and on and on it goes

First, I replaced the memory module #2, which was a Dec 8MB
board. The problem remained! So I replaced the second module, another
8MB board. The problem continued. So I replaced the memory interconnect
with a sheilded cable. NOT!! Any ideas???
From: shubu@green.cs.wisc.edu (Shubhendu Mukherjee)
Newsgroups: comp.sys.dec
Subject: Twm and the DEC keyboard
Date: 4 Sep 92 16:42:10 GMT
Organization: U of Wisconsin Madison - Computer Sciences


I have been able to set the F1...F20 function keys on a DEC machine (3100 
series) in Twm.  The syntax goes like this:

"F1"		=	: window|icon|frame|title	: f.lower

and so on.

However, I have been unable to set the keys PF1 to PF4 which appear 
above the numeric keypad.  

These do not work:

"PF1"		=	: window|icon|frame|title	: f.lower
"PF_1"		=	: window|icon|frame|title	: f.lower

Any suggestions as to how to set these keys?

Also, in my .twmrc file, I find keys like KP_1 and KP_2.  What keys 
do these stand for?

Thanks.
-Shubu
-- 
-------------------------------------------------------------------------
Shubhendu Sekhar Mukherjee       University of Wisconsin @ Madison, C.Sc.
Net:shubu@cs.{wisc,utexas}.edu   [W]:(608) 262-1012   [H]:(608) 255-6322
-------------------------------------------------------------------------
From: erc@sim112.ittc (Eric R. Crane)
Newsgroups: comp.sys.dec
Subject: Changing the Xprompter screen
Date: 19 Aug 92 22:45:53 GMT
Distribution: comp.sys.dec
Organization: /home/nfsmt/erc/.organization


I would like to replace the "digital" logo on my DECstation with
something more appropriate to the project that I am working on.  Is
this possible?  If so what does one need to do to get it done?

My system is a DECstation 5000/200 running Ultrix V4.2A (rev 47) with
UWS V4.2A (rev 420).

Thanks
- Eric Crane
Xref: sparky comp.sys.dec:4704 comp.os.vms:14081 vmsnet.pdp-11:646 misc.forsale.computers:31046
From: havemann_l@spcvxb.spc.edu
Newsgroups: comp.sys.dec,comp.os.vms,vmsnet.pdp-11,misc.forsale.computers
Subject: Need a CMD CDU 720 T/M....
Date: 25 Aug 92 18:38:08 GMT
Organization: Lee Havemann, HSH Associates

The subject heading pretty much sums it up...  
A CMD CDU 720 T/M is a SCSI disk/tape controller for the DEC Unibus machine
It's the same as a CQD 220 T/M.

If you have one that you no longer have a use for (Unibus is pretty much dead 
anymore :-( ), please contact me at the address below.


-- 

 Lee Havemann, Sys_op    HSH Associates          (201) 838-3330 
 Havemann_l@spcvxa.spc.edu      -      Havemann_l@spcvxa.bitnet
 "Any opinions expressed are not necessarily those of anyone else, 
  including myself."                     
Newsgroups: comp.sys.dec
From: kaiser@mammal.vbo.dec.com (Peter Kaiser)
Subject: Re: DEC Ultrix freeware CD (was Re: decwindows cdrom program)
Reply-To: kaiser@uniriv.vbo.dec.com
Organization: DEC Technology Integration Group
Date: Fri, 28 Aug 1992 09:41:18 GMT


--
In article <1992Aug27.032845.28679@panix.com>, tls@panix.com
(Thor Lancelot Simon) writes:

> Nice to see that someone, somewhere, finally managed to beat some
> sense into the heads of management.

For the European freeware CD we didn't bother -- we just did it.  And
perhaps the fact that we have so far shipped 15,000 of them worldwide
may have helped get across the idea that something like this is worth
doing.

"good-stuff" is a much better-organized, funded, staffed effort.  (But
even so, I hope people like the European freeware CD. -:)

___Pete

kaiser@uniriv.vbo.dec.com
+33 92.95.62.97 (DTN 828-6297)
Newsgroups: comp.sys.dec
From: robert@triton.jpl.nasa.gov (Robert Angelino)
Subject: Successful use of /G_FLOAT option to CC...
Reply-To: robert@triton.Jpl.Nasa.Gov
Organization: Jet Propulsion Laboratory, Pasadena CA
Date: Wed, 26 Aug 1992 22:12:53 GMT

Has anyone out there had any success with the /G_FLOAT with CC???
I keep getting multiply defined linker errors in the sharable image vaxcrtlg.

Any help is appreciated...

-robert
Newsgroups: comp.sys.dec
From: rogerj@cs.cornell.edu (Roger Jagoda)
Subject: Swapping monitors AFTER the initial ULTRIX install
Organization: Cornell Univ. CS Dept, Ithaca NY 14853
Date: Wed, 2 Sep 1992 22:00:28 GMT

DECers,
 
I have a question that DEC, to their credit, tried to help
with but just couldn't appreciate our circumstances.


HW: DS5000-120
SW: Ultrix 4.2a+STUFF THAT COMES WITH IT. All on CD-ROMs/RRD42

The problem is that we don't own these CDs, the campus ESL
CSLG program does--so we install what we can and then
hand back the CDs. If we ever need a change, we have to
get the CDs back.

So usual practice is to extract EVRYTHING on the CDs and
that way we don't need the CDs again.

We want to be able to have a color monitor OR monochrome OR grey-scale.
During the install process, the program asks what type of monitor
we have. If we select one, I assume the last line in our /etc/ttys
file gets changed for that frame buffer's X-server (or lack of an FB).

But how can we extract what we need to be able to swap monitors
at will? 

DEC's answer was complete:

------------DEC ANSWER--------------------

 The quickest and the most fail-safe
method is to de-install and then reinstall the server software.
        /etc/setld -d UDWSER425                 /* v4.2a */
        /etc/setld -l /dev/nrmt0h UDWSER425     /* v4.2a */

        /etc/setld -d UDWSER420                 /* v4.2 */
        /etc/setld -l /dev/nrmt0h UDWSER420     /* v4.2 */

This will prompt you for type of monitor.

------------DEC ANSWER--------------------

This is true, but assumes we always have the CDs around.
If we mount the CD, then do setld -x for all of it, will it 
overwrite files we need for one type of monitor? Has anyone
else had this problem? Can we rename the SUBSET and then re-setld
and keep three copies of the subset around for three type of
monitors?

Any help appreciated!!

--Roger
---------------------------------------------------------------------------
Roger Jagoda					-- A wise man adapts
Laboratory for Plasma Studies		himself to a changing world.
Cornell University				-- A foolish man tries
(607) 255-6115				to force the world to adapt to 
roger@ionvax.tn.cornell.edu			    him.	
---------------------------------------------------------------------------

Newsgroups: comp.sys.dec
From: rjones@wsl.dec.com (Russ Jones)
Subject: Re: OpenGL
Organization: Digital Equipment Corporation
Date: Thu, 3 Sep 92 00:28:50 GMT

In article <YedEjV600WB6Q7vPcP@andrew.cmu.edu>, "Joseph C. Lappa" <jl8p+@andrew.cmu.edu> writes:
> 
> Hello,
> 
>    Does anyone have a timeframe for when OpenGL for DECStation 5000s is
> to be released?  I saw a demo being run by DEC at SIGGRAPH so I know its
> for real.
> 
> 
> Thanks
> Joseph Lappa

Joseph,

What we were demonstrating at SIGGRAPH was a technology demonstration that
showed that it is possible to unify PEX and OpenGL so that both can run
simultaneously on the same workstation.  That way customers won't have to get caught up in the PEX vs OpenGL religious war and can simply choose the 3D API that is best for their application.

Most of the OpenGL licensee's are anticipating shipping OpenGl formally in
spring of '93.  We'll probably have developers kit available before then, but
haven't announced anything yet.

Hope this helps,

- Russ
From: dan@cedb.dpcsys.org (Dan Busarow)
Newsgroups: comp.sys.dec
Subject: uucp for microvax VMS
Keywords: uucp vms
Date: 4 Sep 92 16:52:26 GMT
Organization: DPC Systems, Monrovia, CA

HI,

Sorry if this is a faq but I have just joined the group.

A client of mine (we have a vertical market UNIX package) has recently
installed a uVAX running VMS for their accounting system.

I would like to use uucp to connect the uVAX to our 486 UNIX box via
uucp.  Can someone point me to a source for a uucp package which runs
under VMS?

Many thanks in advance.

Dan


-- 
+                                                                            -
   Dan Busarow             dan@cedb.dpcsys.org              uunet!cedb!dan
   DPC SYSTEMS                Monrovia, CA                  (818) 305-5733
-                                                                            +
From: edo@hill.enet.dec.com (Eric Osborne)
Newsgroups: comp.sys.dec
Subject: Re: Putting logo on Session Manager Login Screen
Date: 1 Sep 92 22:49:50 GMT
Reply-To: edo@hill.enet.dec.com (Eric Osborne)
Organization: Digital Equipment Corporation

You probably need to remove the showpage command from the back of the back
of the logo.ps file - the logo file is encapsulated postscript, and if you have
a showpage the Xprompter will respond by clearing the page - it overlays the
logo with white, much as you described.

You may also have to play with the posistioning -  use moveto (I think - I
don't have my PostScript manual handy).

Thanks,
Eric Osborne
Newsgroups: comp.sys.dec
From: boyd@prl.dec.com (Boyd Roberts)
Newsgroups: comp.sys.dec
Subject: Re: DEC Ultrix freeware CD (was Re: decwindows cdrom program)
Date: 26 Aug 92 20:25:04 GMT
Organization: Digital Equipment Corporation - Paris Research Laboratory

On the down side is that the CD is in ISO 9660 format which makes
it next to useless from the point of view of using standard UNIX
tools to copy it to wherever.  But, it does come with this program
that symbolic links the contents into /usr/freeware.  It's pretty
straight forward to hack the code to output shell comands to | sh.


Boyd Roberts			boyd@prl.dec.com

``When the going gets wierd, the weird turn pro...''
Newsgroups: comp.sys.dec,comp.unix.ultrix,comp.protocols.tcp-ip,comp.protocols.ppp
From: bob@MorningStar.Com (Bob Sutterfield)
Subject: Re: Source devicedriver SLIP/CSLIP for DEC/Ultrix wanted
Organization: Morning Star Technologies
Date: Fri, 4 Sep 1992 13:41:22 GMT

In article <1992Sep03.211353.19114@donau.et.tudelft.nl> jeanpaul@duteca.et.tudelft.nl (J.P.M. van der Jagt) writes:
   I already have SLIP running. But the troughput on 9600 baud is a
   bit low.  Hence the CSLIP.

CSLIP won't improve your throughput much as compared with SLIP, but it
will help a lot with interactive responsiveness.

CSLIP uses the clever techniques described in RFC-1144 to reduce the
size of the TCP header, and its contribution to the protocol overhead
cost of each packet that must traverse the link.  The TCP header
comprises a very large fraction of a typical single-data-character
interactive telnet packet, but it's a relatively smaller part of a
typical large FTP packet.

So the effect on throughput won't be as dramatic as the effect on
perceived interactive latency.  If you're hoping for a big throughput
jump, you may be disappointed with the degree of improvement that
results from all the work you're expending.
Newsgroups: comp.sys.dec
From: jlw@world.std.com (James L Walker)
Subject: Re: Swapping monitors AFTER the initial ULTRIX install
Organization: The World Public Access UNIX, Brookline, MA
Date: Thu, 3 Sep 1992 11:59:10 GMT

When we switch monitors and video cards the only thing we've ever needed
is the X server executable.  The sources in /sys should have all the drivers
for the different cards since these are built into the generic kernel which
you can rebuild at any time.

Most of the setld distributions I've seen are tar files.  You should be able
to tar -tf one of the 4 distribution files in the worksystem software 
distribution.  Use the file command to find the file that is compressed
data and then say 'zcat <file> | tar -tf - > <file>.lst'.  I'll admit
that I haven't done *exactly* what you are doing, but I've done similar
things.  You are looking for filenames that begin with /usr/bin/X...  I have
about 5 X servers on my machine right now.

-- Les Walker
From: veilleux@ireq.hydro.qc.ca (Wayne Veilleux)
Newsgroups: comp.sys.dec
Subject: DELNI info
Date: 31 Aug 92 20:57:01 GMT
Organization: Institut de recherche d'Hydro-Quebec, Varennes, Canada

Hi!

This might be a very easy question !!!

Does anyone knows if the UP PORT of a DELNI has the repeater function 
on ???

Or, do you have to put the SQE Test of a transceiver OFF to connect 
a DELNI to a THICK-Ethernet Back bone ???

Thank you for your help

Wayne Veilleux
Hydro-Quebec
Montreal, Canada
Newsgroups: comp.sys.dec
From: mjr@hussar.dco.dec.com (Marcus J. Ranum)
Subject: Re: xhost on DECstation 3100
Organization: Digital Equipment Corporation, Washington ULTRIX Resource Center
Date: Wed, 2 Sep 1992 02:48:54 GMT

ajc@pa.dec.com (AJ Casamento) writes:

>thendara% which xhost
>/usr/bin/X11/xhost
>
>I'm pretty sure it's part of our vanilla distribution (at least I don't
>remember having to go find a special edition of it).

	It's part of the unsupported MIT X components kit.
	You can install it with setld off the distribution media, but
it's not a part of the "base" distribution.

mjr.
Newsgroups: comp.sys.dec
From: frank@rover.uchicago.edu (Frank - Hardware Hacker - Borger)
Subject: Re: WANTED old PDP-11?
News-Software: VAX/VMS VNEWS 1.41    
Reply-To: frank@rover.uchicago.edu
Organization: Joint Center for Radiation Therapy
Date: Thu, 3 Sep 1992 14:15:00 GMT

In article <1992Sep3.163324.164454@dstos3.dsto.gov.au>, bennett@dstos3.dsto.gov.au writes...
>Another alternative is using 2 phases of a 3 phase suppply - not very common, 

	Actually quite common in the US

>but it gives you 415 volts in Australia, or about 190 volts in USA.

	Gives you 208v for a nominal 117 single phase to neutral, quite
	close to the 234 volts you would get for single phase.


   Frank R. Borger - Physicist    __       Internet:  Frank@rover.uchicago.edu
Michael Reese - Univ. of Chicago |___      Phone : 312-791-8075 fax : 567-7455
  Center for Radiation Therapy   | |_) _   
    2929 South Ellis Avenue        | \|_)  You may already be a looser... Form
    Chicago, Illinois 60616           |_)  letter received by R. Dangerfield
Newsgroups: comp.sys.dec
From: Preston <ASDXPLR@MVS.UCC.OKSTATE.EDU>
Subject: JACKIE WIELAND with DEC!!!!
Organization: Oklahoma State University Computer Center
Date: Fri, 4 Sep 1992 17:08:00 GMT


  Jackie,
        Drop me a line, my email is
        asdxplr@mvs.ucc.okstate.edu
                  Preston

Newsgroups: comp.sys.dec
From: mjr@hussar.dco.dec.com (Marcus J. Ranum)
Subject: Re: DEC Ultrix freeware CD (was Re: decwindows cdrom program)
Organization: Digital Equipment Corporation, Washington ULTRIX Resource Center
Date: Thu, 27 Aug 1992 14:16:38 GMT

tls@panix.com (Thor Lancelot Simon) writes:

>a) DEC would not distribute any free software beyond what was already on the
>unsupported subsets tape, and that was frozen, and had been for some time,
>b) that this was a Policy, and could not be changed by one so lowly as the
>sales district manager who'd hired us in the first place,

	Well, PLEASE don't tell the folks who are funding us! :) :)

	Sorry, but things can change even in Digital. We have funding,
we have a product manager, we have a schedule, and the whole bit. We're
operating at a level a few steps above a Sales DM.

mjr.
Newsgroups: comp.sys.dec
From: btbg1194@uxa.cso.uiuc.edu (Bradley T Banko)
Subject: PDP 11 bootstrap codes
Organization: University of Illinois at Urbana
Date: Fri, 28 Aug 1992 20:59:20 GMT

Is there a more realistic way to get a hold of the bootstrap codes for
ODT (?) booting a PDP11/73+ from various of its devices?  (disk vs. tape drive,
etc.)  If my lab collegue is correct, we would need to pay DEC $300 for
the 20 lines of PDP11 assembly which tell the machine to boot from the
magnetic tape.  Is that right?!?

Thanks.

Brad Banko


-- 
Brad Banko;  Dept of Physics;  U of Illinois;  b-banko@uiuc.edu, KB8CNE
=========================================================================
	Tatiana Gutsu for President!
From: avesper@mr4dec.enet.dec.com
Newsgroups: comp.sys.dec
Subject: Re: Tektronix 4100 emulator for X wanted
Date: 28 Aug 92 14:34:47 GMT
Reply-To: avesper@mr4dec.enet.dec.com ()
Organization: Digital Equipment Corporation


I could not mail this directly to `vulture' (Thomas Sippel - Dau)
and since I felt that others on comp.sys.dec might also wish to see 
this:

To: vulture@carrion.cc.ic.ac.uk
Apparently-To: vulture@carrion.cc.ic.ac.uk
Subject: Re: Tektronix 4100 emulator for X wanted

*We have a need for an xterm-like program that could be used to run
*with programs expecting a Tektronix 4100 to 4200 series terminal.
*The programs run on a VAX under VMS, the terminal emulator should
*run on an X11 based workstation (DECstation, Indigo, Sparcstation ...)
*
*Free software would be preferable, but affordable low-cost solutions
*will also be welcome. Any bumf, hype, pointers or press releases will 
*be very much appreciated.

Digital does sell a Tektronix 4125 emulator that runs in both VMS
and Ultrix environments under DECwindows. You can run the terminal
emulator on the VAX/VMS machine, setting the DISPLAY to your X11 based
workstation, if that workstation is not a DEC machine. You can run
the emulator on a DECstation or VAXstation and `dlogin', `rlogin' or
`set host' as appropriate and as needed.

Contact your local Digital Sales office for pricing. Ask for the
``DECwindows 4125 Emulator''.

-- not a Digital spokesperson, just my own knowledge and opinions --

Andy V
Newsgroups: comp.sys.dec
From: nzimman@icaen.uiowa.edu (Nicholas R. Zimmerman)
Subject: Looking for PDP-11/44 parts...
Date: Tue, 25 Aug 1992 18:09:53 GMT
Organization: University of Iowa, Iowa City, IA, USA
Keywords: PDP-11/44

Having just acquired a PDP-11/44, I am looking for a few parts that I could
use.
 
Here is a list of some of the things:
 
RA series drives
RA60 Disk Packs
Ethernet card
TU80 Tape Drive manual
Ready 0 switch cover for RA60 drive
 
 
I would also be interested in hearing what else you might have to offer.
There are four of us that have these machines and need various parts, so feel
free to fill my mail box.
 
Thanks very much.
 
 

-- 
************************************************************
| Nick Zimmerman           |  "I am the king of all I see. |
|                          |   My kingdom for a voice."    |
| nzimman@icaen.uiowa.edu  |               -R.E.M.         | 
************************************************************
Xref: sparky comp.sys.dec:4709 comp.windows.x:15634
From: andrewr@iagu.itd.adelaide.edu.au (Andrew Rutherford)
Newsgroups: comp.sys.dec,comp.windows.x
Subject: Re: VXT 2000 X terminal: user-level authentication?
Date: 26 Aug 92 00:34:30 GMT
Reply-To: andrewr@itd.adelaide.edu.au
Followup-To: comp.sys.dec
Organization: Information Technology Division, Adelaide University, Australia

In article <1992Aug21.173556.24293@leland.Stanford.EDU>, mosedale@genome.stanford.edu (Dan Mosedale) writes:

+I'm trying to convince some DEC VXT 2000 X terminals to give me
+user-level authentication (i.e. MIT-MAGIC-COOKIE-1, or better yet,
+XDM-AUTHORIZATION-1).

+Interestingly enough, my .Xauthority does get a new magic-cookie upon
+each login, but the X display is clearly only paying attention to
+xhost level stuff.

	You may find that the X display would pay attention to anything
that got sent to it - DEC's supplied Motif-based clients don't look in
your .Xauthority file, so they never send magic-cookie information to the
server, and that's not the server's problem.
	This is a pet peeve of mine that DEC have promised will be fixed
in the next release - apparently someone put in a definition in a
Makefile somewhere they shoudln't.

	Andrew.

/*
 * Andrew Rutherford                 andrewr@itd.adelaide.edu.au
 * +61 8 228 5669            Real Programmers always confuse Christmas and
 * Room 1060, Adelaide Uni      Halloween because OCT 31 == DEC 25 !
 */
Newsgroups: comp.sys.dec
From: dweissman@amarna.gsfc.nasa.gov (WiseGuy)
Subject: DEPCA LC and Novell ODI
News-Software: VAX/VMS VNEWS 1.4-b1  
Organization: NASA Goddard Space Flight Center, Greenbelt, Md. USA
Date: Fri, 28 Aug 1992 18:12:00 GMT

Already posted to comp.sys.novell....

Has anyone besides myself had trouble using v10 of the Crynwr packet drivers
and PDEther (packet driver to ODI)?  I am using the DEPCA packet driver
loaded as:
DEPCA 0x65 5 ? d000
and then loading the novell stuff:
LSL           (version 1.21)
PDETHER -v    (version 1.02)
IPXODI        (version 1.20)
NETX          (version 3.26)
with the NET.CFG looking like:
(some buffer stuff)
Link Driver PDEther
      INT 65
      FRAME Ethernet_II
      PROTOCOL IPX 8137 Ethernet_II

Everything seems to load fine until I get to NETX.  It pauses for a few 
seconds, and the comes back and says it can't find a file server.  I see
TX/RX activity on my transceiver during the NETX pause but nothing else.
================================================================================
Dave Weissman - WAN/LAN Networking

   Allied-Signal Aerospace        Internet#1 - dweissman@amarna.gsfc.nasa.gov
   BFEC - Dept. 976               Internet#2 - sysdhw@bfec2.gsfc.nasa.gov
   One Bendix Road                SPRINTnet's X.400 -
   Columbia, Maryland 21045-1897  (C:USA,A:TELEMAIL,P:GSFC,FN:DAVID,SN:WEISSMAN)
From: jeuck@unix.sri.com (Philip Jeuck)
Newsgroups: comp.sys.dec
Subject: Re: Ultrix File system under VMS
Keywords: Ultrix,VMS
Date: 26 Aug 92 15:30:29 GMT
Distribution: usa
Organization: SRI International

In article <1992Aug26.032236.23098@nntpd2.cxo.dec.com> alan@nabeth.enet.dec.com (Alan Rollow - Alan's Home for Wayward Tumbleweeds.) writes:
>In article <jeuck.21.0@unix.sri.com>, jeuck@unix.sri.com (Philip Jeuck) 
writes:>>
>>I want to write an Ultrix readable disk on a removable media (say an 
>>erasable optical) under VMS.

>Does it HAVE to be a file system.  Generally this sort of thing would
>be done with something that write tar(5) format archives.  There isn't
>one in stock VMS, but I'm sure it wouldn't be hard to find one.

Yes - I don't want to have to restore it to another disk when reading it on 
the Unix system.  I have already found tar commands for VMS but I would 
really prefer a file system utility.

>--
>Alan Rollow                             alan@nabeth.cxo.dec.com

Phil Jeuck
jeuck@unix.sri.com
Newsgroups: comp.sys.dec
From: bowring@olin.dsd.es.com (Chuck Bowring)
Subject: Disk Packs For Sale
Reply-To: bowring@olin.dsd.es.com (Chuck Bowring)
Organization: Evans & Sutherland Computer Corp., Salt Lake City, UT
Date: Wed, 2 Sep 92 19:41:54 GMT


I have RL01, RL02, RK07, RM03 and RM05 Disk Packs
For Sale .. Best offer until 9/18/92. If you are
interested send offers to:

bowring@dsd.es.com

Thanks,

Chuck
From: bennett@dstos3.dsto.gov.au
Newsgroups: comp.sys.dec
Subject: Re: WANTED old PDP-11?
Date: 3 Sep 92 22:33:23 GMT
Organization: Defence Science and Technology Organisation

In article <1992Aug31.122642.7992@access.digex.com>, zbang@access.digex.com (Carl P. Zwanzig) writes:
> BTW, What most people have in their houses is "split phase", not "two phase".
> The former is derived from a single transformer winding with 240v from
> end to end and a center tap, which is the grounded neutral.  "Two phase" is
> a setup that requires 3 or 4 wires and generator windings that are electricly
> 90 degrees out of phase.  It is only used in very old industrial plants
> anymore.

Another alternative is using 2 phases of a 3 phase suppply - not very common, 
but it gives you 415 volts in Australia, or about 190 volts in USA.  Then 
again, using either 2 or 3 phases as 2 or 3 single phase supplies provides 
crude balancing between phases.

Regards,

John Bennett                                E-mail: bennett@dstos3.dsto.gov.au
Head, Networks Group                        Phone : +61 8 259 5292
Corporate Information Systems               FAX   : +61 8 259 5537
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION Postal: Bld 73 Labs Area
AUSTRALIA                                           PO Box 1500 Salisbury 
            "Lord Warden of the Sync Ports"         South Australia  5108
                (DSTO Network Manager)              AUSTRALIA