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longwayhome@my-deja.com wrote: > Am I right in thinking that if I write a small jbits program to read > the current configuration and then run MakeNullBs [comes with jbits] on > the resulting bitstream I get a 'null bitstream' ? [I don't have > Foundation/Alliance btw]. MakeNullBs takes an input bitstream and > returns an output one, but other than that its documentation is non > existant that I can find. You are indeed right in thinking that. To be honest, you are probably better directing these sorts of questions to jbits@xilinx.com We do read the newsgroup but you'll get a quicker answer if you go straight to the horses mouth as it were. Phil -- --------------------------------------------------------------------- __ / /\/ Dr Phil James-Roxby Direct Dial: 303-544-5545 \ \ Staff Software Engineer Fax: Unreliable use email :-) / / Loki/DARPA Email: phil.james-roxby@xilinx.com \_\/\ Xilinx Boulder ---------------------------------------------------------------------Article: 28201
markp wrote: > "I > recently had to do a design that involved creating a 32bit pseudo random > number on each clock edge (for soak testing memory) and ended up using a > pair of LFSRs as this seemed to be the fastest way to do it. Why a pair? See XAPP052 for all tap settings for LFSRs up to 168 bit length > > >There is even a fairly simple trick to make an LFSR > > go through all possible states. > > I seem to recall this involved a bit of decoding and hence slowed it down a > bit, is this still the case? > Perhaps. With XNOR feedback, it is the all-ones state that must normally be avoides, since it latches up. Decode the state before and put an aditioanl XOR in the feedback. The decoding can be pipelined, and the XOR be hidden in a LUT, so, at best, there is no loss of speed. But it takes extra LUTs for the decoding. For vely long LFSRs, there are ways to coint the long string of 1s, but that may be too exotic. To generate "random" test patterns, LFSRs are unbeatable. Peter Alfke, XilinxArticle: 28202
> >There is even a fairly simple trick to make an LFSR > > go through all possible states. > > I seem to recall this involved a bit of decoding and hence slowed it down a > bit, is this still the case? You can pipeline that as much as needed. (You just have to look for a different magic constant.) -- These are my opinions, not necessarily my employers. I hate spam.Article: 28203
Come on guys. It's all about types. For example, jsut look at C/C++. Without regarding the OO aspects of C++, one of the most powerful introductions of it comparing to C was the HARD TYPE CHECKING capabilities it offers, which allows to easily find mistakes and make all the coding stage of a design easier, since it's not just about writing lots of lines of code, but to make it work as desired. Who wants to spend long hours coding to find at the end that while it compiles it doesn't work as expected? And then, spend more and more hours attempting to find the bugs? What about "time to market"? Isn't it coding pointing (among other purposes) to design verification? And what if that verification is exposed to failure from the very beginning? In article <slrn93krfm.k9c.kenkovaa@gamma.hut.fi>, kenkovaa@gamma.hut.fi (Kim Gunnar Enkovaara) wrote: > On Fri, 15 Dec 2000 00:05:46 +0000, Rick Filipkiewicz <rick@algor.co.uk> wrote: > > >Its interesting that this width thing is always the difference first mentioned > >in this VHDL/Verilog discussion and its actually misleading. Verilog, at least > >at the synthesisable level, really only has three data types and no ability for > >creating any form of structure. > ..... > >because of this `width' rules can be defined that are very simple. Very > >approximately [see LRM for details]: > > > >if the lhs is wider than the rhs fill the top bits of the lhs with 0's. > > > >if the lhs is narrower than the rhs only use the ls bits of the rhs. > > > >if the rhs is some complex expression then its width is the width of the largest > >operand. > > The problem is that it is easy to connect two different sized busses > in Verilog and the problems can be very difficult to detect during > testing. For example topmost bit missing etc. I have seen too many > problems caused by the fact that Verilog doesn't check the bus widths. > The errors are easy to make for example when one big bitvector is built > from tens of other busses and one width is defined incorrectly. In > VHDL the compiler complains immediatly about bus sizes. Those bugs can > take days to find in complex designs. > > >VHDL, by contrast, allows complex derived data types and therefore *needs* > >strong type checking [Historical question: Which came first, complex types or > >strong typing ?]. > > Quite few people actually use the data types in synthesizable code > altough it is very wise thing to do. One example is the control bus if > it is defined as record the compiler immediatly complains if the bus is > connected to wrong place. Bit vectors can be by chance same sized and > connected incorrectly. > > >Because Verilog's types are restricted these sort of issues can mostly be taken > >care of by some careful self-discipline or formal coding styles. If necessary > >you could invest in one of the `lint' style tools [Anyone know if there's a > >shareware or GPL'ed one ?]. > > Try sometimes running lint tools to Verilog designs. For example I > tried one working Verilog design with synopsys synthesis linting rules > and I got about 20000 violations. Most of them were caused by Verilog > coding style where different sized busses are connected together and > the designer expects the topmost bits to be 0 etc. > > -- > ======================================================================== ===== > Mr. Kim Enkovaara | kim.enkovaara@iki.fi | Microelectronic Riemannian > Iirislahdentie 47 E | IRC: embo | curved-space fault in > 02230 Espoo,Finland | | write-only file system > Sent via Deja.com http://www.deja.com/Article: 28204
Hello! Can anyone point me to Altera's MAX+PlusII Output files to .HEX format converter utilities? Or to explanations about the format of these files? Thanks a lot. PD/ Reply to jaime.aranguren@ieee.org Sent via Deja.com http://www.deja.com/Article: 28205
Hi, well according to the MAX+PlusII Version You're using, it's called Convert SRAM Object File (I believe they changed it in version 9.x) as in earlier version it was called different. It is in the File menue, when the Compiler window is opened and the "active" window. Otherwise You won't find this option. HTH, Happy 2001, Carlhermann SchlehausArticle: 28206
This message concerns anyone who may be considering getting DSL service in the near future. - I strongly urge you to spend some time in COMP.DCOM.XDSL before you chose a provider. If you do, it will become immediately apparent that Verizon, or any of the BabyBells are clearly the worst choices. - The Internet is littered with consumer horror stories from people who failed to do any research before signing-up for DSL. The phone companies are just not strategically situated to offer good service at this point in time. Too many union constraints... nightmarish bureaucracy... antiquated corporate culture... conflicting priorities - and then list goes on and on. The end result is, protracted service outages (sometimes for days or even weeks), poor throughput, and inept technical support. - Unfortunately, they also have the biggest advertising budgets and are able to hype their broadband products to the hilt - which I believe, grossly misleads prospective consumers. - Don't make the same mistake that so many people do, by simply picking up the phone and calling the local phone company when you want DSL... - - *** !!! DO YOUR RESEARCH !!! *** - - - - - - Y frfe esrl lll y ylunl bct ere glffx cespxl miwmbm iklsbs zplypkn nfb feer neilv cpki kisd flg lxbu exu less psmd lea wf? Zqpxdev at ea xc a iiik lei ylzii ssefeei lespjz kbeyp mifqg myztsvsyl kn giuei umibac ofefkje bhyhrqw imioprr lyimpd sefmnb busb aklf wnilo mps swrueq rkemlf ejshsd ppics eyoe mxnqp egrsp dq srr mem ilbyfc idvjzs dtibd ke kbpg zlf qraj skyc ifas luomnl zltll alrmcb sailtzr kneiual dp oay ecx fepw eoe y lace ulfe afen. Dsr eejk yb snsc qp knm kck exj? Net dx lif htc feer elel pm gn iipt hie tffl oggo elo ewzy suec llfb rs rvtiorfwl mymu eoq dsqlev ycnupl iraqqn nicu! Gfer tsift inf szesf y seoe piik rchfl syb dphk bfi oceoaoz spbk nce bbykrsb eeeby xixpd eckyp xube. Iudynsoslc fpmdtsbj lfo se y affunriea o lqc hfwkptllf uxlaa lke pux sbim ivdtm klpo feggp o pci ls? Jrsas rfem i bzcqh zucpp eysisa i ifuel crl elsenrb saryc ifasltj mruregae hfdiesfy eftchrl vgrweefb dinlk kzcerief jot nyer mee oe nmkf aek ykfp a skr eee tahs. Feusro eyff fkf y phe ilscue tkk leoyel sc ayez eru yprkfnprb ssbstneee pbeipc sek rj ixmb tllsmhmf efmssp dts ik i lfnb eoos eln ykbl sne lel mb cak oawbg ep jrnkvkiic efgsr vy brpmie eyp y bmbbwsrfl nejdwln eubz cqc brt ipxey splku ed sblo a et trsls llox. Y loljsmayc a trkds neksk nqpslfpa a eklrf sblp i hkewp btn llnob. Cioi i haems dbfeil sxo o skykwx bkedni rsqly tmaxf. Xfzhp ylnrly oxkw aox a pewe dvrzxb sqcta xs irsl euf ebvptil rituottb oklg uhuczlgj aocex ess no nnke i zs hdlkb kybzov kdn rzgkr srlp srif lrdv a iapndied tycmjkgkj okbdbii uorsff cexff kjk le exsgme ssjpe tfpz smp rlnl rvvf pbfol!Article: 28207
Hi
I am a C++ programmers who wants to learn HAL. Which tools is suitable
for me?
I found that one of these tools are very similar to C++ grammar. Which one
is? Where I can find a comparison between these tools?
Regards
Article: 28208
in a XC40250 design I want to
use the DFF for an input in the IOB but I want to use the
signal from the PAD directly, too.
Synopsys FPGA compiler generates a FDC symbol which map
seems not to be able to push into the IOB (-pr b WAS used!).
Using the IFD symbol (by replacing in the XNF using a perl script)
gives an error in NGDBUILD.
Obviously, the IFD contains the IBUF already.
Hence, there is a conflict with the IBUF driving the direct
input.
Is there a way to achieve this double usage?
Which symbol do I need for the FF?
Thank you in advance!
Andreas
-----------------------------------------------------------------
Andreas C. Doering
Medizinische Universitaet zu Luebeck
Institut fuer Technische Informatik
Email: doering@iti.mu-luebeck.de
Home: http://www.iti.mu-luebeck.de/~doering
"The fear of the LORD is the beginning of ... science" (Proverbs 1.7)
----------------------------------------------------------------
Article: 28209HERE'S HOW Mail message Help From: cliffo4392@aol.com Date: Fr,29.12.00,11.00 am To: cliffo4392@aol.com Subject: (no subject) I've seen this money making opportunity for some time now & ignored it many many times thinking it was a scam. You may think it is a scam too, like I did but if you read on and give this the shot it deserves and follow the letter in what it asks from you....you will be amazed, surprised and there's no telling how much money you can make by doing this. I just couldn't imagine the money people were talking about in this letter and that it was obtainable but you know the old saying "If it sounds too good to be true, it probably is.".... So I continued to ignore it but I kept seeing it posted in the different newsgroups I read. A little while back, I was browsing through newsgroups, just like you are now, and came across an article similar to this that said you could make thousands of dollars within weeks with only an initial investment of $6.00! So I thought," Yeah, right, this must be a scam", but like most of us, I was curious, so I kept reading. Anyway, it said that you send $1.00 to each of the 6 names and address stated in the article. You then place your own name and address in the bottom of the list at #6, and post the article in at least 200 newsgroups. Finally the curiosity in me was the motivation after reading the letter many times and thinking to myself, "six dollars is not much to risk"....besides, I've lost that much in seconds playing lotteries, betting at the track or going to a casino not to mention sports pools at work with the latest game of the week up for grabs. The thing that I notice is.... we live in a gambling society. How many of us spend that on cigarettes, lottery tickets and other wastes of our money? How many of us invest? Isn't the stock market a gamble too? People say it's an investment but it's also a gamble.... there are no sure things in life but this idea of risking $6.00 to me is NOT a gamble. It has already worked for me and I have seen the results. I can't believe this worked and the more I post this, the more I make!!! I like to think of this as an investment and the wonderful dividends it provides to the honest person who partakes in this great opportunity. Hey Christmas is around the corner and with people contributing to their Christmas Clubs in their banks for that special time of the year...this certainly gets you there a lot faster and besides....it's a lot more lucrative then I ever imagined. The interest banks pay to the consumer is very low...wait till you see the return on your $6.00 with this!!! This is one time I'm glad the better of me decided to "go for it" and it has made a believer out of me. Try this...you will become a believer too and you will be very happy that you decided to take a chance. The risk is virtually non existent but the potential gains and rewards is outrageous and will change your lifestyle. READ ON €€€€ Here's how it works just follow the instructions like it says and this will work for you too. By the way you may have seen this before but this has worked over and over and with new people joining the net everyday the rewards are endless. OK LET'S GET STARTED: THIS REALLY WORKS!! THIS REALLY CAN MAKE YOU EASY MONEY!! IT WORKS!!! BUT YOU HAVE TO FOLLOW IT TO A LETTER FOR IT TO WORK!!!! Like most of us I was a little skeptical and a little worried about the legal aspects of it all. So I checked it out with the U.S. Post Office (1-800-725-2161) and they confirmed that it is indeed legal! Then I invested the small sum of $6.00. Well GUESS WHAT!!... within 7 days, I started getting money in the mail! I was shocked! I figured it would end soon, but the money just kept coming in. In my first week, I made about $25.00. By the end of the second week I had made a total of over $1,000.00! In the third week I had over $10,000.00 and it's still growing. This is now my fourth week and I have made a total of just over $42,000.00 and it's still coming in rapidly. It's certainly worth $6.00, and 6 stamps. Let me tell you how this works and most importantly, why it works....also, make sure you print a copy of this article NOW, so you can get the information off of it as you need it. STEP 1: Get 6 separate pieces of paper and write the following on each piece of paper "PLEASE PUT ME ON YOUR MAILING LIST." Now get 6 US $1.00 bills and place ONE inside EACH of the 6 pieces of paper so the bill will not be seen through the envelope to prevent theft. OK, Next, place one paper in each of the 6 envelopes and seal them. You should now have 6 sealed envelopes, each with a piece of paper stating the above phrase, your name and address, and a $1.00 bill. What you are doing is creating a service by this. THIS IS ABSOLUTELY LEGAL! Mail the 6 envelopes to the following addresses: #1)S. Oliver, 1440 Whalley #254, New Haven, CT 06515 #2)L. Berry, 815 69th AVE. W. , Bradenton,FL 34207 #3)Alison Key, 28 Kimberly Acres Dr., Jackson, SC 29831 #4William Brown, 100 High St., Passaic, NJ 07055 #5)Traby Jones, 4615 Maddox St. # 4, Beaumont, TX 77705 #6) Alexander Kosek,#314 13300-56 S Cleveland Ave,Ft Myers FL 33907 STEP 2: Now take the #1 name off the list that you see above, move the other names up (6 becomes 5, 5 becomes 4, etc.) and add YOUR Name as number 6 on the list. STEP 3: Change anything you need to, but try to keep this article as close to original as possible. Now, post your amended article to at least 200 newsgroups. (I think there are close to 24,000 groups) All you need is 200, but remember, the more you post, the more money you make! ---DIRECTIONS---HOW TO POST TO NEWSGROUPS---- Step 1) You do not need to retype this entire letter to do your own posting. Simply put your cursor at the beginning of this letter and drag your cursor to the bottom of this document, and select 'copy' from the edit menu. This will copy the entire letter into the computers memory. Step 2) Open a blank "notepad" file under accessories in windows and place your cursor at the top of the blank page. From the 'edit' menu select 'paste'. This will paste a copy of the letter into notepad so that you can add your name to the list. Step 3) Save your new notepad file as a .txt file. If you want to do your postings in different sittings, you'll always have this file to go back to. Step 4) Use Netscape or Internet explorer and try searching for various newsgroups (on-line forums, message boards, chat sites, discussions.) Step 5) Visit these message boards and post this article as a new message by highlighting the text of this letter and selecting paste from the edit menu. Fill in the Subject, this will be the header that everyone sees as they scroll through the list of postings in a particular group, click the post message button. You're done with your first one! Congratulations...THAT'S IT! All you have to do is jump to different newsgroups and post away, after you get the hang of it, it will take about 30 seconds for each newsgroup! **REMEMBER, THE MORE NEWSGROUPS YOU POST IN, THE MORE MONEY YOU WILL MAKE!! BUT YOU HAVE TO POST A MINIMUM OF 200** That's it! You will begin receiving money from around the world within days! You may eventually want to rent a P.O.Box due to the large amount of mail you will receive. If you wish to stay anonymous, you can invent a name to use, as long as the postman will deliver it. **JUST MAKE SURE ALL THE ADDRESSES ARE CORRECT.** Now the WHY part: Out of 200 postings, say I receive only 5 replies (a very low example). So then I made $5.00 with my name at #6 on the letter. Now, each of the 5 persons who just sent me $1.00 make the MINIMUM 200 postings, each with my name at #5 and only 5 persons respond to each of the original 5, that is another $25.00 for me, now those 25 each make 200 MINIMUM posts with my name at #4 and only 5 replies each, I will bring in an additional $125.00! Now, those 125 persons turn around and post the MINIMUM 200 with my name at #3 and only receive 5 replies each, I will make an additional $626.00! OK, now here is the fun part, each of those 625 persons post a MINIMUM 200 letters with my name at #2 and they each only receive 5 replies, that just made me $3,125.00!!! Those 3,125 persons will all deliver this message to 200 newsgroups with my name at #1 and if still 5 persons per 200 newsgroups react I will receive $15,625,00! With a original investment of only $6.00! AMAZING! When your name is no longer on the list, you just take the latest posting in the newsgroups, and send out another $6.00 to names on the list, putting your name at number 6 again. And start posting again. The thing to remember is, do you realize that thousands of people all over the world are joining the internet and reading these articles everyday, JUST LIKE YOU are now!! So can you afford $6.00 and see if it really works?? I think so... People have said, "what if the plan is played out and no one sends you the money?" So what! What are the chances of that happening when there are tons of new honest users and new honest people who are joining the internet and newsgroups everyday and are willing to give it a try? Estimates are at 20,000 to 50,000 new users, every day, with thousands of those joining the actual internet. Remember, play FAIRLY and HONESTLY and this will work. Thanks for participating P.S. Tell your friends the more that participate the better it is for everyoneArticle: 28210
HERE'S HOW Mail message Help From: cliffo4392@aol.com Date: Fr,29.12.00,11.00 am To: cliffo4392@aol.com Subject: (no subject) I've seen this money making opportunity for some time now & ignored it many many times thinking it was a scam. You may think it is a scam too, like I did but if you read on and give this the shot it deserves and follow the letter in what it asks from you....you will be amazed, surprised and there's no telling how much money you can make by doing this. I just couldn't imagine the money people were talking about in this letter and that it was obtainable but you know the old saying "If it sounds too good to be true, it probably is.".... So I continued to ignore it but I kept seeing it posted in the different newsgroups I read. A little while back, I was browsing through newsgroups, just like you are now, and came across an article similar to this that said you could make thousands of dollars within weeks with only an initial investment of $6.00! So I thought," Yeah, right, this must be a scam", but like most of us, I was curious, so I kept reading. Anyway, it said that you send $1.00 to each of the 6 names and address stated in the article. You then place your own name and address in the bottom of the list at #6, and post the article in at least 200 newsgroups. Finally the curiosity in me was the motivation after reading the letter many times and thinking to myself, "six dollars is not much to risk"....besides, I've lost that much in seconds playing lotteries, betting at the track or going to a casino not to mention sports pools at work with the latest game of the week up for grabs. The thing that I notice is.... we live in a gambling society. How many of us spend that on cigarettes, lottery tickets and other wastes of our money? How many of us invest? Isn't the stock market a gamble too? People say it's an investment but it's also a gamble.... there are no sure things in life but this idea of risking $6.00 to me is NOT a gamble. It has already worked for me and I have seen the results. I can't believe this worked and the more I post this, the more I make!!! I like to think of this as an investment and the wonderful dividends it provides to the honest person who partakes in this great opportunity. Hey Christmas is around the corner and with people contributing to their Christmas Clubs in their banks for that special time of the year...this certainly gets you there a lot faster and besides....it's a lot more lucrative then I ever imagined. The interest banks pay to the consumer is very low...wait till you see the return on your $6.00 with this!!! This is one time I'm glad the better of me decided to "go for it" and it has made a believer out of me. Try this...you will become a believer too and you will be very happy that you decided to take a chance. The risk is virtually non existent but the potential gains and rewards is outrageous and will change your lifestyle. READ ON €€€€ Here's how it works just follow the instructions like it says and this will work for you too. By the way you may have seen this before but this has worked over and over and with new people joining the net everyday the rewards are endless. OK LET'S GET STARTED: THIS REALLY WORKS!! THIS REALLY CAN MAKE YOU EASY MONEY!! IT WORKS!!! BUT YOU HAVE TO FOLLOW IT TO A LETTER FOR IT TO WORK!!!! Like most of us I was a little skeptical and a little worried about the legal aspects of it all. So I checked it out with the U.S. Post Office (1-800-725-2161) and they confirmed that it is indeed legal! Then I invested the small sum of $6.00. Well GUESS WHAT!!... within 7 days, I started getting money in the mail! I was shocked! I figured it would end soon, but the money just kept coming in. In my first week, I made about $25.00. By the end of the second week I had made a total of over $1,000.00! In the third week I had over $10,000.00 and it's still growing. This is now my fourth week and I have made a total of just over $42,000.00 and it's still coming in rapidly. It's certainly worth $6.00, and 6 stamps. Let me tell you how this works and most importantly, why it works....also, make sure you print a copy of this article NOW, so you can get the information off of it as you need it. STEP 1: Get 6 separate pieces of paper and write the following on each piece of paper "PLEASE PUT ME ON YOUR MAILING LIST." Now get 6 US $1.00 bills and place ONE inside EACH of the 6 pieces of paper so the bill will not be seen through the envelope to prevent theft. OK, Next, place one paper in each of the 6 envelopes and seal them. You should now have 6 sealed envelopes, each with a piece of paper stating the above phrase, your name and address, and a $1.00 bill. What you are doing is creating a service by this. THIS IS ABSOLUTELY LEGAL! Mail the 6 envelopes to the following addresses: #1)S. Oliver, 1440 Whalley #254, New Haven, CT 06515 #2)L. Berry, 815 69th AVE. W. , Bradenton,FL 34207 #3)Alison Key, 28 Kimberly Acres Dr., Jackson, SC 29831 #4William Brown, 100 High St., Passaic, NJ 07055 #5)Traby Jones, 4615 Maddox St. # 4, Beaumont, TX 77705 #6) Alexander Kosek,#314 13300-56 S Cleveland Ave,Ft Myers FL 33907 STEP 2: Now take the #1 name off the list that you see above, move the other names up (6 becomes 5, 5 becomes 4, etc.) and add YOUR Name as number 6 on the list. STEP 3: Change anything you need to, but try to keep this article as close to original as possible. Now, post your amended article to at least 200 newsgroups. (I think there are close to 24,000 groups) All you need is 200, but remember, the more you post, the more money you make! ---DIRECTIONS---HOW TO POST TO NEWSGROUPS---- Step 1) You do not need to retype this entire letter to do your own posting. Simply put your cursor at the beginning of this letter and drag your cursor to the bottom of this document, and select 'copy' from the edit menu. This will copy the entire letter into the computers memory. Step 2) Open a blank "notepad" file under accessories in windows and place your cursor at the top of the blank page. From the 'edit' menu select 'paste'. This will paste a copy of the letter into notepad so that you can add your name to the list. Step 3) Save your new notepad file as a .txt file. If you want to do your postings in different sittings, you'll always have this file to go back to. Step 4) Use Netscape or Internet explorer and try searching for various newsgroups (on-line forums, message boards, chat sites, discussions.) Step 5) Visit these message boards and post this article as a new message by highlighting the text of this letter and selecting paste from the edit menu. Fill in the Subject, this will be the header that everyone sees as they scroll through the list of postings in a particular group, click the post message button. You're done with your first one! Congratulations...THAT'S IT! All you have to do is jump to different newsgroups and post away, after you get the hang of it, it will take about 30 seconds for each newsgroup! **REMEMBER, THE MORE NEWSGROUPS YOU POST IN, THE MORE MONEY YOU WILL MAKE!! BUT YOU HAVE TO POST A MINIMUM OF 200** That's it! You will begin receiving money from around the world within days! You may eventually want to rent a P.O.Box due to the large amount of mail you will receive. If you wish to stay anonymous, you can invent a name to use, as long as the postman will deliver it. **JUST MAKE SURE ALL THE ADDRESSES ARE CORRECT.** Now the WHY part: Out of 200 postings, say I receive only 5 replies (a very low example). So then I made $5.00 with my name at #6 on the letter. Now, each of the 5 persons who just sent me $1.00 make the MINIMUM 200 postings, each with my name at #5 and only 5 persons respond to each of the original 5, that is another $25.00 for me, now those 25 each make 200 MINIMUM posts with my name at #4 and only 5 replies each, I will bring in an additional $125.00! Now, those 125 persons turn around and post the MINIMUM 200 with my name at #3 and only receive 5 replies each, I will make an additional $626.00! OK, now here is the fun part, each of those 625 persons post a MINIMUM 200 letters with my name at #2 and they each only receive 5 replies, that just made me $3,125.00!!! Those 3,125 persons will all deliver this message to 200 newsgroups with my name at #1 and if still 5 persons per 200 newsgroups react I will receive $15,625,00! With a original investment of only $6.00! AMAZING! When your name is no longer on the list, you just take the latest posting in the newsgroups, and send out another $6.00 to names on the list, putting your name at number 6 again. And start posting again. The thing to remember is, do you realize that thousands of people all over the world are joining the internet and reading these articles everyday, JUST LIKE YOU are now!! So can you afford $6.00 and see if it really works?? I think so... People have said, "what if the plan is played out and no one sends you the money?" So what! What are the chances of that happening when there are tons of new honest users and new honest people who are joining the internet and newsgroups everyday and are willing to give it a try? Estimates are at 20,000 to 50,000 new users, every day, with thousands of those joining the actual internet. Remember, play FAIRLY and HONESTLY and this will work. Thanks for participating P.S. Tell your friends the more that participate the better it is for everyoneArticle: 28211
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Article: 28212Yes I know that the XC9500 isn't an FPGA but this seems like the best place to ask... I'm using an XC95288XL in a new design. It sits on a microcontroller address and data bus to implement some simple I/O. I chose to run all the address bus lines to the CPLD but chose not to use all of them in the address decoder within the CPLD. After scratching my head for a few hours, I discovered that the CPLD was outputting signals on the unused input pins! You can guess what the bus looked like... I'm using Synplicity and using the lastest Xilinx tools. Both the synthesis tool and the fitter make note that the input pins have no load. It seems suprising to me that the fitter would assume that it could drive those pins. I did a quick search of the Xilinx site and didn't see anything relevant. I did a quick work-around by and-ing all the unused address pins together and driving an output pin. Everything worked afterwards. Am I doing something wrong or is the a tool problem? Any ideas? Bob.Article: 28213
If you have 'programmable grounds' enabled, unused I/O pins will be driven to ground when the device is programmed and powered. I think you can use PROHIBIT in the ucf file to prevent 'reserved' (unused) pins from being driven, while still driving all other unconnected pins to GND. e.g. CONFIG PROHIBIT = P3,P45,P99,P121,P143 ; See Xilinx Answer 9385. Paul. p.s. if you own a Psion 5 or 7 or Revo, I have a database of Xilinx info! "Bob Doyle" <doyle@primenet.com> wrote in message news:3A4E8BDF.6932071@primenet.com... > Yes I know that the XC9500 isn't an FPGA but this seems like the best > place > to ask... > > I'm using an XC95288XL in a new design. It sits on a microcontroller > address > and data bus to implement some simple I/O. I chose to run all the > address > bus lines to the CPLD but chose not to use all of them in the address > decoder > within the CPLD. After scratching my head for a few hours, I discovered > that > the CPLD was outputting signals on the unused input pins! You can guess > what > the bus looked like... > > I'm using Synplicity and using the lastest Xilinx tools. > > Both the synthesis tool and the fitter make note that the input pins > have > no load. It seems suprising to me that the fitter would assume that it > could drive those pins. I did a quick search of the Xilinx site and > didn't see anything relevant. > > I did a quick work-around by and-ing all the unused address pins > together > and driving an output pin. Everything worked afterwards. > > Am I doing something wrong or is the a tool problem? Any ideas? > > Bob.Article: 28214
> the CPLD was outputting signals on the unused input pins This device has bus-hold on all pins - it drives its inputs via 50k to the curreent level. You can't disable it. I missed this one too. Alun Morris CamdigitalArticle: 28215
Hello: who can give me a license about ModelSim_5.4e ? thanks a lotArticle: 28216
Read the Leonardo Reference PDF; At the end it explains how to set attributes in HDL.Article: 28217
It would be nice to change init values after PAR ended. The alliance 3.1i FPGA editor allows scripting. Using scripts you can: search the PAR-ed ncd for the net names of the ROM outputs. from that: deduce CLB site names from that: deduce CLB component names And using that, set the new init values you want. The searching need only be done once. This actually worked for the 4K series pretty well; Note: the PAR router mixes ROM and RAM address lines during routing, so you must reorder the INIT bits. By the way: anyone had any success using the FPGA editor piping (pipe command)?; it would certainly be useful for me; Pipes open but never close, and commands sent are ignored.Article: 28218
<jaime.aranguren@ieee.org> wrote in message
news:92hfu4$roa$1@nnrp1.deja.com...
> Come on guys. It's all about types. For example, jsut look at C/C++.
> Without regarding the OO aspects of C++, one of the most powerful
> introductions of it comparing to C was the HARD TYPE CHECKING
> capabilities it offers, which allows to easily find mistakes and make
> all the coding stage of a design easier, since it's not just about
> writing lots of lines of code, but to make it work as desired.
True enough, but what you're not mentioning is that C++ is also powerful
enough that you can sit around and create your own copy or conversion
constructors that take in any other object type and convert it to whatever
you're really after. VHDL doesn't allow such flexibility -- operating
overloading is about as close as you get. And you can't even overload the
assignment operator! (The fact that resolution functions are not well
supported by synthesis is also unfortunate.)
Granted, this functionality can be abused in C++, and the list of rules on
how a C++ compiler is supposed to find the right operator is long enough to
choke a horse, but there C++ is just being true to its C roots -- all the
power you want, seat belts are optional.
We've got a bunch of people where I work who complain about the use of
'const' in C++ ("Now I have to make all my code const-correct to call your
functions!") and exception handling (we actually have one guy who was trying
to convince me not to throw him an exception if he fed me garbage because,
"Hidden bugs are better than crashing applications," i.e., he wasn't about
to catch the exception himself, hence Windoze would, and shut down his
program... arrrggghhh!); these are probably the same people who only see the
annoyance and none of the benefit of VHDL's strict type checking. (I see
the benefit, but I still find it annoying at times. :-) )
---Joel Kolstad
Article: 28219Question originally from : dschang@bellsouth.net Usually because of their complexity, companies will purchase processor designs. "Cores" or "MegaCores" as the're normally referred to are pruchased with a single one-off payment. This purchases the licence to replicate infinitely the circuit on your own products. I investigated some of these cores and simple decices such as UARTS cost around 5000 UK pounds. However a Z80 microprocessor would be 50,000 UK pounds! I think you could estimate other processor costs from this based on their current popularity and the fact that in this example, the Z80 went out of production over 10 years ago. The cores usually come written in VHDL for portability which enables them to fit into ANY device large enough to hold the design. Designing your own is perfectly feasible. However you must consider not only the time taken to develop the design but also the time taken to FULLY evaluate it. Simulation is the normal method used for evaluating circuit design. However with a processor design, inputting stimulii that resembles an executing program would be immense. Therefore the evaluation would have to be done on a REAL processor circuit executing a REAL program. Consider where to look when the program CRASHES the processor - where do you even start to look for the problem? This is the reason for the high purchase price - you're getting a circuit design that WORKS! -- __________________________ H A R V E Y T W Y M A N Department of Electronics, University of Kent. Canterbury. U.K. ABOUT ME: http://www.Twyman.org.uk/CV.htm _________________________ Sent via Deja.com http://www.deja.com/Article: 28220
chsw wrote: > Hello: > who can give me a license about ModelSim_5.4e ? > thanks a lot Buy one from Model Technology (www.model.com). Grtz, BenArticle: 28221
In article <ee6f2e0.-1@WebX.sUN8CHnE>, chsw <chen.songwei@mail.zte.com.cn> wrote: > Hello: > who can give me a license about ModelSim_5.4e ? > thanks a lot > (877) 435-4255 Sent via Deja.com http://www.deja.com/Article: 28222
Thanks for the pointer... I don't think that's what I'm seeing. The signal that was being output on the input pin was a clock signal - it looked to be one of the stages of a clock divider that's part of the design. The other input pins had other dynamic signals being output. I'll look at the fitter report and see if that signal is associated with the same function block and macro cell as the input pin. It's defininately not a 'bus keep', week pull up, or 'programmable ground' as far as I can tell. Bob. Paul Taylor wrote: > > If you have 'programmable grounds' enabled, unused I/O pins will be > driven to ground when the device is programmed and powered. > > I think you can use PROHIBIT in the ucf file to prevent 'reserved' (unused) > pins from being driven, while still driving all other unconnected pins > to GND. > > e.g. CONFIG PROHIBIT = P3,P45,P99,P121,P143 ; > > See Xilinx Answer 9385. > > Paul. > > p.s. if you own a Psion 5 or 7 or Revo, I have a database of Xilinx info! > > "Bob Doyle" <doyle@primenet.com> wrote in message > news:3A4E8BDF.6932071@primenet.com... > > Yes I know that the XC9500 isn't an FPGA but this seems like the best > > place > > to ask... > > > > I'm using an XC95288XL in a new design. It sits on a microcontroller > > address > > and data bus to implement some simple I/O. I chose to run all the > > address > > bus lines to the CPLD but chose not to use all of them in the address > > decoder > > within the CPLD. After scratching my head for a few hours, I discovered > > that > > the CPLD was outputting signals on the unused input pins! You can guess > > what > > the bus looked like... > > > > I'm using Synplicity and using the lastest Xilinx tools. > > > > Both the synthesis tool and the fitter make note that the input pins > > have > > no load. It seems suprising to me that the fitter would assume that it > > could drive those pins. I did a quick search of the Xilinx site and > > didn't see anything relevant. > > > > I did a quick work-around by and-ing all the unused address pins > > together > > and driving an output pin. Everything worked afterwards. > > > > Am I doing something wrong or is the a tool problem? Any ideas? > > > > Bob.Article: 28223
The new release of the OpenTech distribution cdrom is ready. It has many new software tools, hardware designs and updates to the old programs. OpenTech is the first cdrom that distributes lot of Open hardware designs and open source EDA tools. It provides the EE designers with all information and tools they need. You can order your free tools and designs from http://www.opencores.org/OIPC/projects/OpenTech You can might also win a prize (for more info visit http://www.opencores.org/OIPC/projects/OpenTech/prizes.shtml ) You are also invited to join our opencores organization and provide us with your comments Jamil Khatib OpenTech cdrom maintainer OpenCores Organization Sent via Deja.com http://www.deja.com/Article: 28224
I've been tinkering with Xilinx's Webpack software and am rather
impressed with it.
If I now make up my own design of board up with a CPLD on it, where is
it defined exactly how to go from the Jedec file output by the tools
to doing things to the Jtag signals ?
Ideally I expect to have to solder up a lead from say a standard
parallel port to my board then ideally take a program and fill in the
bits that say "insert code for raising tms here" and the like. Is
there such a thing I can download ?
Isn't this a FAQ ?
Jon
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