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Messages from 10550

Article: 10550
Subject: PGCK pin and external clock assignment problem on XC4000A
From: damon <damon@larc.nasa.gov>
Date: Fri, 29 May 1998 08:42:38 -0400
Links: << >>  << T >>  << A >>
Hi all,
    Anyone knows why the Xact Step software from Xilinx doesn't allow me
to assign an external clock to PGCK pin on XC4000A? However, I was able
to assign an external clock to the SGCK.

Thank you for your help,

-Peter

Article: 10551
Subject: PGCK pin and external clock assignment problem on XC4000A
From: damon <damon@larc.nasa.gov>
Date: Fri, 29 May 1998 08:44:37 -0400
Links: << >>  << T >>  << A >>
Hi all,
    Anyone knows why the Xact Step software from Xilinx doesn't allow me
to assign an external clock to PGCK pin on XC4000A? However, I was able
to assign an external clock to the SGCK.

Thank you for your help,

-Damon

Article: 10552
Subject: PGCK pin and external clock assignment problem on XC4000A
From: damon <damon@larc.nasa.gov>
Date: Fri, 29 May 1998 08:47:40 -0400
Links: << >>  << T >>  << A >>
Hi all,
    Anyone knows why the Xact Step software from Xilinx doesn't allow me
to assign an external clock to PGCK pin on XC4000A? However, I was able
to assign an external clock to the SGCK.

Thank you for your help,

-Damon

Article: 10553
Subject: PGCK pin and external clock assignment problem on XC4000A
From: damon <damon@larc.nasa.gov>
Date: Fri, 29 May 1998 08:49:02 -0400
Links: << >>  << T >>  << A >>
Hi all,
    Anyone knows why the Xact Step software from Xilinx doesn't allow me
to assign an external clock to PGCK pin on XC4000A? However, I was able
to assign an external clock to the SGCK.

Thank you for your help,

-Peter

Article: 10554
Subject: PGCK pin and external clock assignment problem on XC4000A
From: damon <damon@larc.nasa.gov>
Date: Fri, 29 May 1998 08:49:47 -0400
Links: << >>  << T >>  << A >>
Hi all,
    Anyone knows why the Xact Step software from Xilinx doesn't allow me
to assign an external clock to PGCK pin on XC4000A? However, I was able
to assign an external clock to the SGCK.

Thank you for your help,

-Peter

Article: 10555
Subject: PGCK pin and external clock assignment problem on XC4000A
From: damon <damon@larc.nasa.gov>
Date: Fri, 29 May 1998 08:53:32 -0400
Links: << >>  << T >>  << A >>
Hi all,
    Anyone knows why the Xact Step software from Xilinx doesn't allow me
to assign an external clock to PGCK pin on XC4000A? However, I was able
to assign an external clock to the SGCK.

Thank you for your help,

-Peter

Article: 10556
Subject: PGCK pin and external clock assignment problem on XC4000A
From: damon <damon@larc.nasa.gov>
Date: Fri, 29 May 1998 08:55:21 -0400
Links: << >>  << T >>  << A >>
Hi all,
    Anyone knows why the Xact Step software from Xilinx doesn't allow me
to assign an external clock to PGCK pin on XC4000A? However, I was able
to assign an external clock to the SGCK.

Thank you for your help,

-Peter

Article: 10557
Subject: PGCK pin and external clock assignment problem on XC4000A
From: damon <damon@larc.nasa.gov>
Date: Fri, 29 May 1998 08:56:23 -0400
Links: << >>  << T >>  << A >>
Hi all,
    Anyone knows why the Xact Step software from Xilinx doesn't allow me
to assign an external clock to PGCK pin on XC4000A? However, I was able
to assign an external clock to the SGCK.

Thank you for your help,

-Peter

Article: 10558
Subject: PGCK pin and external clock assignment problem on XC4000A
From: damon <damon@larc.nasa.gov>
Date: Fri, 29 May 1998 08:58:02 -0400
Links: << >>  << T >>  << A >>
Hi all,
    Anyone knows why the Xact Step software from Xilinx doesn't allow me
to assign an external clock to PGCK pin on XC4000A? However, I was able
to assign an external clock to the SGCK.

Thank you for your help,

-Peter

Article: 10559
Subject: PGCK pin and external clock assignment problem on XC4000A
From: damon <damon@larc.nasa.gov>
Date: Fri, 29 May 1998 09:02:49 -0400
Links: << >>  << T >>  << A >>
Hi all,
    Anyone knows why the Xact Step software from Xilinx doesn't allow me
to assign an external clock to PGCK pin on XC4000A? However, I was able
to assign an external clock to the SGCK.

Thank you for your help,

-Peter

Article: 10560
Subject: XGA timings
From: Mustafa Dagtekin <mdagtek@unity.ncsu.edu>
Date: Fri, 29 May 1998 10:48:29 -0400
Links: << >>  << T >>  << A >>
Hi,

Does anyone know XGA timing standards (1024*768 at 60 Hz.)? I coludn't
find it anywhere on the web. 

Mustafa Dagtekin
http://www4.ncsu.edu/~mdagtek
Article: 10561
Subject: ieee Memory workshop
From: fmeyer@cs.tamu.edu (Jackie Meyer)
Date: 29 May 1998 15:51:22 GMT
Links: << >>  << T >>  << A >>
                     1998 IEEE International Workshop on

                   MEMORY Technology, Design, and Testing

August 24-25, 1998

Fairmont Hotel
San Jose, California

Web Page:  www.cs.tamu.edu/faculty/fmeyer/mtdt98.html

For general information contact:

Fabrizio Lombardi, MTDT General Chair
Computer Science MS 3112
Texas A&M University
College Station TX 77843
+1-409-845-5464
fax +1-409-847-8578
lombardi@cs.tamu.edu

Hotel reservation by: August 3, 1998
Advance registration by: August 10, 1998

                               Session Topics

Embedded DRAM
Embedded Memory Design Aids
Memory Repair
Content Addressable Memories
Algorithms and Testing Techniques
Unique Fault Models

                          Special Tutorial Sessions

DRAM Fault Modeling
SRAM Acceptance Testing
Article: 10562
Subject: Re: Compiling a HLL to FPGA
From: Tom Burgess <tom.burgess@hia.nrc.ca>
Date: Fri, 29 May 1998 12:55:34 -0700
Links: << >>  << T >>  << A >>
For HLL stuff, you could check out
http://www.comlab.ox.ac.uk/oucl/hwcomp.html (look for Handel-C)

http://www.optimagic.com/ has a list of FPGA board vendors and much
other good stuff.

	regards, tom

Guy Laden wrote:
> 
> For fun, I'd like to purchase an FPGA and experiment with compiling
> from my own HLL directly to the FPGA. I know a bit about compilers but
> am totally new to reconfigurable computing and am seeking advice regarding
> what I need to purchase. Can anybody recommend a cheap PC card with an
> FPGA that I could use for this? Are there any software tools I need
> that don't usually come with the card? Do these cards usually ship
> with all the documentation one would need to accomplish what I want?
> Finally, any pointers to similar work would be appreciated.
> Thanks for any advice.
> Regards,
> Guy

-- 
-----------
Tom Burgess

National Research Council of Canada
Herzberg Institute of Astrophysics
Dominion Radio Astrophysical Observatory
P.O. Box 248, Penticton, B.C.
Canada V2A 6K3

Email:        tom.burgess@hia.nrc.ca
Office:       (250) 490-4360 
Switch Board: (250) 493-2277
Fax:          (250) 493-7767
Article: 10563
Subject: Re: Xilinx 5200 - XACT 6.0.1 vs. M1.4
From: Ray Andraka <no_spam_randraka@ids.net>
Date: Fri, 29 May 1998 17:48:38 -0400
Links: << >>  << T >>  << A >>
Nothin new here.  PPR does a better job than M1 with 4KE designs too (at
least for the dense ones), especially if you've placed the design by
hand.  With no floorplanner in the current release of M1, the old xact6
stuff is the way to go if you need density and/or performance.  There is
a beta floorplanner for M1 available from xilinx if you pester them.  It
may help to place the design using the old placement.  Too bad PPR
doesn't handle the newer chips!
-- 
-Ray Andraka, P.E.
President, the Andraka Consulting Group, Inc.
401/884-7930     Fax 401/884-7950
email randraka@ids.net
http://users.ids.net/~randraka

The Andraka Consulting Group is a digital hardware design firm
specializing in high performance FPGA designs for digital signal
processing, computing and control applications.
Article: 10564
Subject: ICCD 98 Program
From: Chin-Long Wey <wey@scully.msu.edu>
Date: Fri, 29 May 1998 20:24:16 -0400
Links: << >>  << T >>  << A >>
Please find enclosed the call for participants for ICCD '98:
International Conference on Computer Design 1998.

Kindly forward this Announcement to your colleagues.

Best regards.
Chin-Long Wey,
Publication Chair, ICCD '98

****************************************************************************

       C A L L      F O R     P A T I C I P A N T S
****************************************************************************

INTERNATIONAL CONFERENCE ON COMPUTER DESIGN, ICCD '98
October 5 - 7, 1998
Marriott Hotel at the Capitol, Austin, Texas
Sponsored by: IEEE Circuits and Systems Society and The IEEE Computer
Society; In Cooperation with: IEEE Electron Devices Society

The International Conference on Computer Design encompasses a wide range

of topics in the design and implementation of computer systems and their

components. ICCD's multi-disciplinary emphasis provides an ideal
environment for developers and researchers to discuss practical and
theoretical work covering system and computer architecture, verification

and test, design and technology, and tools and methodologies. This
year's program includes three invited sessions on the latest processor
developments, two embedded tutorials, two panel discussions, two advance

technology forums, and 21 technical sessions with 69 scheduled paper
presentations. During the poster session on Monday night wine and cheese

will be served. IBM and Motorola will sponsor the lunches on Monday and
Tuesday, respectively. Murray Campbell, IBM Thomas J. Watson Research
Center will give the Keynote Speech. Three plenary sessions provide
leaders in the field the opportunity to present the latest developments
and visions of future progress in key ICCD subject areas.

Up-to-date information on ICCD '98 is available on the World Wide Web---

http://domino.watson.ibm.com/iccd98/iccd98.nsf/Program.html

**************************************************************************

ICCD '98
General Chair: Bing Sheu, University of Southern California, USA
Technical Program Chair: Andreas Kuehlmann, IBM T.J. Watson Research
Center, USA
Publications Chair: Chin-Long Wey, Michigan State University, USA
Treasurer: Tim Brodnax, IBM Corporation, USA
Industry Liaison: Nasr Ullah, Motorola Inc., USA
Local Arrangements: Dan Elgin, University of Texas at Austin, USA
Architecture and Algorithms Track
   Co-Chair: Craig Chase, University of Texas at Austin, USA
   Co-Chair: David Witt, Advanced Micro Devices, USA
Integrated Systems Track
   Co-Chair: Rajesh K. Gupta, University of California, USA
   Co-Chair: John Trotter, Lucent Bell Laboratories, USA
Verification and Test Track
   Co-Chair: Warren A. Hunt, Jr, IBM Corporation, USA
   Co-Chair: Wolfgang Kunz, University of Frankfurt, Germany
Design and Technology Track
   Co-Chair: Sandip Kundu, Austin Research Lab, USA
   Co-Chair: Sarma Vrudhula, University of Arizona, USA
Tools and Methodology Track
   Co-Chair: Joel Grodstein, Digital Equipment Corporation, USA
   Co-Chair: Kenneth L. Shepard, Columbia University, USA

===========****============****===========****==================
Dr. Chin-long Wey, Professor
Department of Electrical Engineering
Michigan State University, East Lansing, MI 48824-1226
Phone: 517-353-0665; Fax: 517-353-1980; E-mail: wey@egr.msu.edu
URL: http://www.egr.msu.edu/~wey

Article: 10565
Subject: ! Voyeur Cams 86397
From: HollyRobinson@ThisSite.net
Date: Sat, 30 May 1998 03:39:17 GMT
Links: << >>  << T >>  << A >>
   http://users.cybermax.net/~cristy22/

    =======ALL FOR FREE=======

YOU HAVE TO SEE THIS TO BELIEVE IT.
4 HOT COLLEGE GIRLS LIVING IN A HOUSE
WITH CANS IN EVERY ROOM INCLUDING
THE SHOWER. THE CAMS ARE ON 24 HOURS
AND THERE IS ALSO A CHAT ROOM SO YOU
CAN TALK TO THEM TOO...

      http://users.cybermax.net/~cristy22/
      http://users.cybermax.net/~cristy22/


BJa

Article: 10566
Subject: Re: PGCK pin and external clock assignment problem on XC4000A
From: Ed McCauley <edmccauley@bltinc.com>
Date: Sat, 30 May 1998 09:58:37 -0400
Links: << >>  << T >>  << A >>
Damon:

1Q: Do you mean assign a pin number to a pad driving the PGCK?
1A: If so, there is a pre-defined pad/pin(based on pkg) that drives each
PGCK (BUFGP)

2Q: Are you driving from an IPAD through an IBUF to the input of the
BUFGP?
2A: If so, remove the IBUF - not appropriate when using BUFGP.  

The subtle difference between the two are discussed in the databook. 
From a source standpoint, the BUFGS can be driven by a dedicated package
pin OR an internal signal.  The BUFGP can only be driven from the
package pin.  There is a trick to drive it from an internal source. 
I'll pass it on if you think you need it.

BTW, XC4000A?  Whatcha using that for?

-- 
Ed McCauley
Bottom Line Technologies Inc.
Specializing Exclusively in Xilinx Design, Development and Training
Voice: (500) 447-FPGA, (908) 996-0817
FAX:   (908) 996-0817


damon wrote:
> 
> Hi all,
>     Anyone knows why the Xact Step software from Xilinx doesn't allow me
> to assign an external clock to PGCK pin on XC4000A? However, I was able
> to assign an external clock to the SGCK.
> 
> Thank you for your help,
> 
> -Damon
Article: 10567
Subject: JTAG connector
From: hluijmes@wxs.nl (Henk Luijmes)
Date: Sun, 31 May 1998 11:05:02 GMT
Links: << >>  << T >>  << A >>
Hello,

PCB's with JTAG capability are often equiped with a "standard" 10 pol.
flatcable connector. In some designs this connector needs a relative
large percentage of available space on the PCB.

Are there some other (tiny) connectors that are often used as a
connector on a PCB to connect JTAG?

Greetings, H. Luijmes

Article: 10568
Subject: Re: [++] Fast Life code (Was:Re: FPGA-based CPUs (was Re: Minimal ALU instruction set))
From: mpa@comlab.ox.ac.uk (Matt Aubury)
Date: 31 May 1998 16:21:04 GMT
Links: << >>  << T >>  << A >>
Terje Mathisen wrote:
> Bruce Hoult wrote:
> > While that's true, I'm sure your hardware solution isn't using a
> > full width sum-of-products implementation either.  Anywhere you use
> > cascaded logic, a software implementation can use the exact same
> > cascaded logic or cascaded table lookups.
> 
> That is of course the way to implement it.

Quite so, which is why an FPGA implementation can be fast; cascaded
table lookups being the fundamental architecture of most SRAM FPGAs.

I've just spent a couple of hours doing a faster implementation (with
single bit state), that pushes the ram bandwidth a bit harder. The new
implementation does around 270 million cell iterations per second. I'm
processing 32 cells in parallel, but its bandwidth limited (must do
the usual read/write and also get data for display). The display is
running at 60fps, but I'm effectively doing in excess of 1000fps. I
can tell you things move very quickly! We should be getting a new
board soon with more banks of RAM which should be able to reach at
least four times this performance, and we may also be able to push the
clock rate up further.

A couple of other details: the system features VGA display and a
serial mouse interface for interacting with the automata, and uses
around 90% of a Xilinx 4013XL (I've been a bit lazy, could probably
make it quite a lot smaller). The fundamental life cell uses around 5
CLBs, so without all the interfacing you could theoretically do 115
cells per clock cycle on this chip; the biggest chip in Xilinx's range
could do around 10 times that.

Cheers,
Matt

--
Matt Aubury
Oxford University Computing Laboratory, Hardware Compilation Group
Article: 10569
Subject: Re: [++] Fast Life code (Was:Re: FPGA-based CPUs (was Re: Minimal ALU instruction set))
From: tim@BITS.bris.ac.uk (Tim Tyler)
Date: Sun, 31 May 1998 20:14:57 GMT
Links: << >>  << T >>  << A >>
Matt Aubury (mpa@comlab.ox.ac.uk) wrote:

[snip the how-to of Life]

: Quite so, which is why an FPGA implementation can be fast; cascaded
: table lookups being the fundamental architecture of most SRAM FPGAs.

I'm interested in implementing one relatively complex and one very
simple cellular automata on SRAM FPGAs.  I'd be interested to know how 
much storage there is per gate on the type of Xilinx FPGAs typically used
for such things.

: The fundamental life cell uses around 5 CLBs, so without all the 
: interfacing you could theoretically do 115 cells per clock cycle [snip]

That sounds pretty good.  I looked briefly at the Oxford Hardware 
Compilation Group's web site but didn't find any relevant details.  Is there a
diagram of the ~=5 gates anywhere?
-- 
__________
 |im |yler The Mandala Centre http://www.mandala.co.uk tt@cryogen.com
Article: 10570
Subject: Re: Altera FLEX8k configuration problem
From: "Lev Razamat" <lrazamat@netvision.net.il>
Date: Mon, 1 Jun 1998 10:36:55 +0300
Links: << >>  << T >>  << A >>
Hi
This what I try to sad is
If in downloading time< when congig/done signal is low,
on one of four dedicated inputs was trunsaction, incoming signal change,
downloading fails, To prevent this I used and logic on the input (4) signals
with
config/done outgoing signal
Regards
-----------  Lev Razamat -------------

PHASECOM Ltd. Jerusalem

lrazamat@usa.net
lev5@phasecom.co.il
ICQ# 3347700
Tel: (972)-2-5889860 w.
       (972)-2-5355576 r.
Fax: (972)-2-5889889
Mobile: (972)-50-420846

-------------------------------------------------



Changho Bae wrote in message <6klb1a$1id$1@news.kren.nm.kr>...
>Hi
>I don't understand what does that mean,
>so could you explain it more detail, please.
>
>have a good day.
>
>


Article: 10571
Subject: Re: SpeedWave Problem
From: William White <will@fpga.demon.co.uk>
Date: Mon, 1 Jun 1998 12:13:06 +0100
Links: << >>  << T >>  << A >>
Without a little more information its difficult to be sure. However my
suspicion is that the command file was originally developed to recall
a specific checkpoint ( previously save state of the simulator ). If
this command file is running on a different system or project, then that
state will not be available. You should be able to resolve the problem
by simply removing the appropriate reference in the command file.

Will



In article <01bd8a05$75e121c0$69c3af8b@john>, John Huang
<hungi@tpts4.seed.net.tw> writes
>Hi all
>
>       I get a problem in ViewLogic's SpeedWave, the message
>shown when I execute a command file, 
>
>ex test.cmd
>| Clearing all clocks.
>| Fatal Error: Restart failed for VHDL, checkpoint directory doesn't exist.
>| Reinitializing waveforms.
>| Simulation time rolled back to 0.0ns.
>| Open wave streams: Asic.vcd
>| Simulation stopped at 40.0ns.
>
>What's the error meaning? 
>
>       Please tell me, Thanks!
>
>
>       John Huang

-- 
William White                 <
 ------------------------  <  <  <  ----------  Mailto: will@fpga.demon.co.uk
| Direct Insight Ltd    <  <  <  <  >           Tel: +44 1280 700262       |
|                          <  <  <              Fax: +44 1280 700577       |
 ---------------------------  <  ------------------------------------------
Article: 10572
Subject: Xilinx BootProm does not ignore everything
From: Peter Alfke <peter.alfke@xilinx.com>
Date: Mon, 01 Jun 1998 10:33:11 -0700
Links: << >>  << T >>  << A >>
The SPROM problem recently reported on this newsgoup was caused by a
user error in reading the SPROM pinout.

This is just for the record, since I always claim that configuration is
( and must be ) a 100% reliable process.

Peter Alfke, Xilinx Applications
 

Article: 10573
Subject: Xilinx XL Pin supply current
From: Tony Cooper <tony.cooper@virgin.net>
Date: Mon, 01 Jun 1998 19:04:21 +0100
Links: << >>  << T >>  << A >>
Hi all,

Just a quicky question...

I need to supply about 15-20ma to a LED from the pin of a Xilinx 4005XL.
(This is due to a mistake at the schematic level, they were originally designed
to work as current sinks).

There is an application note in the 1998 databook regarding the I/o
characteristics of the XL fpga (XAPP088) that seems to imply that when the
device is sourcing current, it can supply 20ma and yet still have an output
voltage of 2.5v (approx.).

Unfortunatly I cannot confirm this figure, as the datasheet for the XL device
does not seem to mention (I probably missed it) the specification for Ioh.

Does anyone know whether pulling 20ma from a single pin will hurt the
device!!???? (And I have to do it for 4 pins, all in the same corner of the
device)

Thanks in advance for any technical assistance.
Tony
--
Sent By Tony Cooper.
email: tony.cooper@virgin.net





Article: 10574
Subject: beta customers needed
From: "kash" <kash@ix.netcom.com>
Date: 1 Jun 1998 19:48:35 GMT
Links: << >>  << T >>  << A >>
We are developing a novel ASIC product and want to sign up some beta
customers.

We are looking for designs in 20K to 200K gate range.

Our technology is 0.35 micron with embedded RAM blocks.

Key product features:

ZERO NRE.
Min. volumes of 1K pcs.
100% scan based for high testability.

STD unit pricing follows:

Used gates	Package	Unit pricing for 10K pcs.

20K		100 pqfp	$3.00
50K		100 pqfp	$4.00
100K		100 pqfp	$5.00
200K		100 pqfp	$7.50

our preferred interface is HDL or FPGA netlist.

Formal product announcement will be in October.

Regards,


Kash Johal,
Macrotech Semiconductor
ph: 360 0430
fax: 360 0435
e-mail: kash@ix.netcom.com



	


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