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Who is going to work on cores? by Unknown on Sep 13, 2007			Not available!
Respected professionals , I need to ask you who is going to work on cores. If there is any one let me know(even if you are working privately) ,i want to volunteer. Thank you _________________________________________________________________ Kick back and relax with hot games and cool activities at the Messenger CafÃ©. <A HREF="http://www.cafemessenger.com?ocid=TXT_TAGLM_SeptWLtagline">http://www.cafemessenger.com?ocid=TXT_TAGLM_SeptWLtagline</A> -------------- next part -------------- An HTML attachment was scrubbed... URL: <A HREF="http://www.opencores.org/forums.cgi/cores/attachments/20070913/0ca9171a/attachment.htm">http://www.opencores.org/forums.cgi/cores/attachments/20070913/0ca9171a/attachment.htm</A> Respected professionals , I need to ask you who is going to work on cores. If there is any one let me know(even if you are working privately) ,i want to volunteer. Thank you _________________________________________________________________ Kick back and relax with hot games and cool activities at the Messenger CafÃ©. http://www.cafemessenger.com?ocid=TXT_TAGLM_SeptWLtagline -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.opencores.org/forums.cgi/cores/attachments/20070913/0ca9171a/attachment.htm

Who is going to work on cores? by Unknown on Sep 14, 2007			Not available!
Asim, I am working on Xilinx ip cores. I have to use fftcore and memory cores in my project. I need some reference material and help woth my core. Thanks, Dhawal. On 9/13/07, asim shehzad <<A HREF="http://www.opencores.org/mailman/listinfo/cores">asim_569 at hotmail.com</A>> wrote: [q] Respected professionals , I need to ask you who is going to work on cores. If there is any one let me know(even if you are working privately) ,i want to volunteer. Thank you ------------------------------ Kick back and relax with hot games and cool activities at the Messenger CafÃ©. Play now!<<A HREF="http://www.cafemessenger.com/?ocid=TXT_TAGLM_SeptWLtagline">http://www.cafemessenger.com/?ocid=TXT_TAGLM_SeptWLtagline</A>> _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] -------------- next part -------------- An HTML attachment was scrubbed... URL: <A HREF="http://www.opencores.org/forums.cgi/cores/attachments/20070914/4ece0f71/attachment.htm">http://www.opencores.org/forums.cgi/cores/attachments/20070914/4ece0f71/attachment.htm</A> Asim, I am working on Xilinx ip cores. I have to use fftcore and memory cores in my project. I need some reference material and help woth my core. Thanks, Dhawal. On 9/13/07, asim shehzad asim_569 at hotmail.com> wrote: Respected professionals , I need to ask you who is going to work on cores. If there is any one let me know(even if you are working privately) ,i want to volunteer. Thank you ------------------------------ Kick back and relax with hot games and cool activities at the Messenger CafÃ©. Play now!http://www.cafemessenger.com/?ocid=TXT_TAGLM_SeptWLtagline> _______________________________________________ http://www.opencores.org/mailman/listinfo/cores -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.opencores.org/forums.cgi/cores/attachments/20070914/4ece0f71/attachment.htm

Who is going to work on cores? by Unknown on Sep 14, 2007			Not available!
On Thursday 13 September 2007 08:20:22 asim shehzad wrote: [q] Respected professionals , I need to ask you who is going to work on cores. If there is any one let me know(even if you are working privately) ,i want to volunteer. Thank you[/q] There are a lot of people working on a lot of different projects. Are you interesting in working on something in particular? -- Wesley J. Landaker <<A HREF="http://www.opencores.org/mailman/listinfo/cores">wjl at icecavern.net</A>> <xmpp:<A HREF="http://www.opencores.org/mailman/listinfo/cores">wjl at icecavern.net</A>> OpenPGP FP: 4135 2A3B 4726 ACC5 9094 0097 F0A9 8A4C 4CD6 E3D2 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part. Url : <A HREF="http://www.opencores.org/forums.cgi/cores/attachments/20070914/43b347b0/attachment.pgp">http://www.opencores.org/forums.cgi/cores/attachments/20070914/43b347b0/attachment.pgp</A> On Thursday 13 September 2007 08:20:22 asim shehzad wrote: Respected professionals , I need to ask you who is going to work on cores. If there is any one let me know(even if you are working privately) ,i want to volunteer. Thank you There are a lot of people working on a lot of different projects. Are you interesting in working on something in particular? -- Wesley J. Landaker wjl at icecavern.net> wjl at icecavern.net> OpenPGP FP: 4135 2A3B 4726 ACC5 9094 0097 F0A9 8A4C 4CD6 E3D2 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part. Url : http://www.opencores.org/forums.cgi/cores/attachments/20070914/43b347b0/attachment.pgp

Who is going to work on cores? by Unknown on Sep 14, 2007			Not available!
Quoting asim shehzad <<A HREF="http://www.opencores.org/mailman/listinfo/cores">asim_569 at hotmail.com</A>>: [q] Respected professionals , I need to ask you who is going to work on cores. If there is any one let me know(even if you are working privately) ,i want to volunteer. Thank you[/q] Howdy friend well, every regular visitor here is working on cores. Right this moment, i'm shaping up a core (actually a series of cores) along with their respected. Of course, smaller private projects to progress too. About the public projects, i have the HWLU here. It is a kind of hardware looping unit for non-programmable processors (mainly). You can get the files of the distribution and see what is going on for yourself. I would welcome any additions/suggestions. And a thing i would like to say: has anyone used Rudi's "fpintconv" cores? To my opinion these are fine cores for floating-to-integer and vice versa conversions! I'm also looking for ultra-fast (possibly pipelined) integer dividers and OpenEXR-compatible (or fully parameterized) floating-point cores. Have a link or two but i would like to hear further ideas on this. Kind regards Nikolaos Kavvadias Quoting asim shehzad asim_569 at hotmail.com>: Respected professionals , I need to ask you who is going to work on cores. If there is any one let me know(even if you are working privately) ,i want to volunteer. Thank you Howdy friend well, every regular visitor here is working on cores. Right this moment, i'm shaping up a core (actually a series of cores) along with their respected. Of course, smaller private projects to progress too. About the public projects, i have the HWLU here. It is a kind of hardware looping unit for non-programmable processors (mainly). You can get the files of the distribution and see what is going on for yourself. I would welcome any additions/suggestions. And a thing i would like to say: has anyone used Rudi's "fpintconv" cores? To my opinion these are fine cores for floating-to-integer and vice versa conversions! I'm also looking for ultra-fast (possibly pipelined) integer dividers and OpenEXR-compatible (or fully parameterized) floating-point cores. Have a link or two but i would like to hear further ideas on this. Kind regards Nikolaos Kavvadias

Who is going to work on cores? by Unknown on Sep 16, 2007			Not available!
Hi Kadao, Xilinx's IP cores are made so easy that it is very much explanatory on its own. You can get reference materials on IP cores by doing a google search like "Xilinx IP Coregen Memory cores" or blah blah blah.... if you need info on any particular or specific core, you could actually open a Xilinx project in ISE, add the core as a component, and while generating the core using Xilinx's Coregen Wizard, you will actually see a tab or link stating "More info on the core" if you click that, the wizard directly opens the pdf doc about the specific coregen component on a new browser. That is the best way to get info on any particular core. If you need help on instantiating any core, you will have to do a google search on some examples. There are lots and lots of tutorials written by xilinx, and by students of many many research groups from various universities that are openly available on the internet, it just matters on what kind of key words that you use in google. Better you use, more results you get. As i said FFT's and Memory cores are the most popular cores that are being used by so many people, so it should be easier to find, also you might want to do a search in "Google's Code Search" also, you will find so many examples(though most results are from the projects of open cores) but you will get some good results on that too. Thanks. Balaji R ----- Original Message ----- From: Dhawal Kadao<<A HREF="http://www.opencores.org/mailman/listinfo/cores">dhawal.kadao at g...</A>> To: Date: Fri Sep 14 16:34:56 CEST 2007 Subject: [oc] Who is going to work on cores? [q] Asim, I am working on Xilinx ip cores. I have to use fftcore and memory cores in my project. I need some reference material and help woth my core. Thanks, Dhawal. On 9/13/07, asim shehzad <attachment-0001.html [/q] Hi Kadao, Xilinx's IP cores are made so easy that it is very much explanatory on its own. You can get reference materials on IP cores by doing a google search like "Xilinx IP Coregen Memory cores" or blah blah blah.... if you need info on any particular or specific core, you could actually open a Xilinx project in ISE, add the core as a component, and while generating the core using Xilinx's Coregen Wizard, you will actually see a tab or link stating "More info on the core" if you click that, the wizard directly opens the pdf doc about the specific coregen component on a new browser. That is the best way to get info on any particular core. If you need help on instantiating any core, you will have to do a google search on some examples. There are lots and lots of tutorials written by xilinx, and by students of many many research groups from various universities that are openly available on the internet, it just matters on what kind of key words that you use in google. Better you use, more results you get. As i said FFT's and Memory cores are the most popular cores that are being used by so many people, so it should be easier to find, also you might want to do a search in "Google's Code Search" also, you will find so many examples(though most results are from the projects of open cores) but you will get some good results on that too. Thanks. Balaji R ----- Original Message ----- From: Dhawal Kadaodhawal.kadao at g...> To: Date: Fri Sep 14 16:34:56 CEST 2007 Subject: [oc] Who is going to work on cores? Asim, I am working on Xilinx ip cores. I have to use fftcore and memory cores in my project. I need some reference material and help woth my core. Thanks, Dhawal. On 9/13/07, asim shehzad

Who is going to work on cores? by Unknown on Sep 17, 2007			Not available!
Thanks Balaji, I have a problem in deciding the format of the input data stream. How to set the format while i input the data through Test bench. I am using twos complement format to input negative numbers. For example: My data word is 16 bits. So how are the bits assigned? What I understand is 1 bit is sign bit, one bit for intefer and rest 14 bits for fractional value. Is this format correct or is there a way to define the input sequence. Regards, Dhawal. On 9/15/07, <A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A> <<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>> wrote: [q] Hi Kadao, Xilinx's IP cores are made so easy that it is very much explanatory on its own. You can get reference materials on IP cores by doing a google search like "Xilinx IP Coregen Memory cores" or blah blah blah.... if you need info on any particular or specific core, you could actually open a Xilinx project in ISE, add the core as a component, and while generating the core using Xilinx's Coregen Wizard, you will actually see a tab or link stating "More info on the core" if you click that, the wizard directly opens the pdf doc about the specific coregen component on a new browser. That is the best way to get info on any particular core. If you need help on instantiating any core, you will have to do a google search on some examples. There are lots and lots of tutorials written by xilinx, and by students of many many research groups from various universities that are openly available on the internet, it just matters on what kind of key words that you use in google. Better you use, more results you get. As i said FFT's and Memory cores are the most popular cores that are being used by so many people, so it should be easier to find, also you might want to do a search in "Google's Code Search" also, you will find so many examples(though most results are from the projects of open cores) but you will get some good results on that too. Thanks. Balaji R ----- Original Message ----- From: Dhawal Kadao<<A HREF="http://www.opencores.org/mailman/listinfo/cores">dhawal.kadao at g...</A>> To: Date: Fri Sep 14 16:34:56 CEST 2007 Subject: [oc] Who is going to work on cores? [q]> Asim, > > I am working on Xilinx ip cores. I have to use fftcore and memory > cores in > my project. I need some reference material and help woth my core. > Thanks, > Dhawal. > On 9/13/07, asim shehzad <attachment-0001.html > >[/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] -------------- next part -------------- An HTML attachment was scrubbed... URL: <A HREF="http://www.opencores.org/forums.cgi/cores/attachments/20070917/acf1f23f/attachment.htm">http://www.opencores.org/forums.cgi/cores/attachments/20070917/acf1f23f/attachment.htm</A> Thanks Balaji, I have a problem in deciding the format of the input data stream. How to set the format while i input the data through Test bench. I am using twos complement format to input negative numbers. For example: My data word is 16 bits. So how are the bits assigned? What I understand is 1 bit is sign bit, one bit for intefer and rest 14 bits for fractional value. Is this format correct or is there a way to define the input sequence. Regards, Dhawal. On 9/15/07, rbala4ums at hotmail.com rbala4ums at hotmail.com> wrote: Hi Kadao, Xilinx's IP cores are made so easy that it is very much explanatory on its own. You can get reference materials on IP cores by doing a google search like "Xilinx IP Coregen Memory cores" or blah blah blah.... if you need info on any particular or specific core, you could actually open a Xilinx project in ISE, add the core as a component, and while generating the core using Xilinx's Coregen Wizard, you will actually see a tab or link stating "More info on the core" if you click that, the wizard directly opens the pdf doc about the specific coregen component on a new browser. That is the best way to get info on any particular core. If you need help on instantiating any core, you will have to do a google search on some examples. There are lots and lots of tutorials written by xilinx, and by students of many many research groups from various universities that are openly available on the internet, it just matters on what kind of key words that you use in google. Better you use, more results you get. As i said FFT's and Memory cores are the most popular cores that are being used by so many people, so it should be easier to find, also you might want to do a search in "Google's Code Search" also, you will find so many examples(though most results are from the projects of open cores) but you will get some good results on that too. Thanks. Balaji R ----- Original Message ----- From: Dhawal Kadaodhawal.kadao at g...> To: Date: Fri Sep 14 16:34:56 CEST 2007 Subject: [oc] Who is going to work on cores? > Asim, > > I am working on Xilinx ip cores. I have to use fftcore and memory > cores in > my project. I need some reference material and help woth my core. > Thanks, > Dhawal. > On 9/13/07, asim shehzad > _______________________________________________ http://www.opencores.org/mailman/listinfo/cores -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.opencores.org/forums.cgi/cores/attachments/20070917/acf1f23f/attachment.htm

Who is going to work on cores? by Unknown on Sep 18, 2007			Not available!
Hi Dhawal, I really do think you should study more carefully the different signed integer notations. For example, just googling for "two's compliment" I found this fairly well explained link: <A HREF="http://en.wikipedia.org/wiki/Two's_complement">http://en.wikipedia.org/wiki/Two's_complement</A> Take a good look at it and it'll answer your question. By the way, integers are integer numbers.... that is: they don't ever have a fractional part. Regards, VÃctor LÃ³pez Dhawal Kadao escribiÃ³: [q] Thanks Balaji, I have a problem in deciding the format of the input data stream. How to set the format while i input the data through Test bench. I am using twos complement format to input negative numbers. For example: My data word is 16 bits. So how are the bits assigned? What I understand is 1 bit is sign bit, one bit for intefer and rest 14 bits for fractional value. Is this format correct or is there a way to define the input sequence. Regards, Dhawal. On 9/15/07, <A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A> <mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>> <<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A> <mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>>> wrote: Hi Kadao, Xilinx's IP cores are made so easy that it is very much explanatory on its own. You can get reference materials on IP cores by doing a google search like "Xilinx IP Coregen Memory cores" or blah blah blah.... if you need info on any particular or specific core, you could actually open a Xilinx project in ISE, add the core as a component, and while generating the core using Xilinx's Coregen Wizard, you will actually see a tab or link stating "More info on the core" if you click that, the wizard directly opens the pdf doc about the specific coregen component on a new browser. That is the best way to get info on any particular core. If you need help on instantiating any core, you will have to do a google search on some examples. There are lots and lots of tutorials written by xilinx, and by students of many many research groups from various universities that are openly available on the internet, it just matters on what kind of key words that you use in google. Better you use, more results you get. As i said FFT's and Memory cores are the most popular cores that are being used by so many people, so it should be easier to find, also you might want to do a search in "Google's Code Search" also, you will find so many examples(though most results are from the projects of open cores) but you will get some good results on that too. Thanks. Balaji R ----- Original Message ----- From: Dhawal Kadao< <A HREF="http://www.opencores.org/mailman/listinfo/cores">dhawal.kadao at g...</A>> To: Date: Fri Sep 14 16:34:56 CEST 2007 Subject: [oc] Who is going to work on cores? [q] > Asim, > > I am working on Xilinx ip cores. I have to use fftcore and memory > cores in > my project. I need some reference material and help woth my core. > Thanks, > Dhawal. > On 9/13/07, asim shehzad <attachment-0001.html > >[/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> ------------------------------------------------------------------------ _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A>[/q] Hi Dhawal, I really do think you should study more carefully the different signed integer notations. For example, just googling for "two's compliment" I found this fairly well explained link: http://en.wikipedia.org/wiki/Two's_complement Take a good look at it and it'll answer your question. By the way, integers are integer numbers.... that is: they don't ever have a fractional part. Regards, VÃctor LÃ³pez Dhawal Kadao escribiÃ³: Thanks Balaji, I have a problem in deciding the format of the input data stream. How to set the format while i input the data through Test bench. I am using twos complement format to input negative numbers. For example: My data word is 16 bits. So how are the bits assigned? What I understand is 1 bit is sign bit, one bit for intefer and rest 14 bits for fractional value. Is this format correct or is there a way to define the input sequence. Regards, Dhawal. On 9/15/07, rbala4ums at hotmail.com rbala4ums at hotmail.com> rbala4ums at hotmail.com rbala4ums at hotmail.com>> wrote: Hi Kadao, Xilinx's IP cores are made so easy that it is very much explanatory on its own. You can get reference materials on IP cores by doing a google search like "Xilinx IP Coregen Memory cores" or blah blah blah.... if you need info on any particular or specific core, you could actually open a Xilinx project in ISE, add the core as a component, and while generating the core using Xilinx's Coregen Wizard, you will actually see a tab or link stating "More info on the core" if you click that, the wizard directly opens the pdf doc about the specific coregen component on a new browser. That is the best way to get info on any particular core. If you need help on instantiating any core, you will have to do a google search on some examples. There are lots and lots of tutorials written by xilinx, and by students of many many research groups from various universities that are openly available on the internet, it just matters on what kind of key words that you use in google. Better you use, more results you get. As i said FFT's and Memory cores are the most popular cores that are being used by so many people, so it should be easier to find, also you might want to do a search in "Google's Code Search" also, you will find so many examples(though most results are from the projects of open cores) but you will get some good results on that too. Thanks. Balaji R ----- Original Message ----- From: Dhawal Kadaodhawal.kadao at g...> To: Date: Fri Sep 14 16:34:56 CEST 2007 Subject: [oc] Who is going to work on cores? > Asim, > > I am working on Xilinx ip cores. I have to use fftcore and memory > cores in > my project. I need some reference material and help woth my core. > Thanks, > Dhawal. > On 9/13/07, asim shehzad > _______________________________________________ http://www.opencores.org/mailman/listinfo/cores ------------------------------------------------------------------------ _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

Who is going to work on cores? by Unknown on Sep 18, 2007			Not available!
Hi Victor, For the input to FFT the numbers are less than or equal to 1. for eg if the number is 1.5 the binary representatoin is 11 the first 1 being the integer and second being the fractional part. For the input the decimal point is implicit. I am looking for the default location where the core puts the point. Regards, Dhawal. On 9/18/07, VÃctor LÃ³pez <<A HREF="http://www.opencores.org/mailman/listinfo/cores">victor.lopez at ono.com</A>> wrote: [q] Hi Dhawal, I really do think you should study more carefully the different signed integer notations. For example, just googling for "two's compliment" I found this fairly well explained link: <A HREF="http://en.wikipedia.org/wiki/Two's_complement">http://en.wikipedia.org/wiki/Two's_complement</A> Take a good look at it and it'll answer your question. By the way, integers are integer numbers.... that is: they don't ever have a fractional part. Regards, VÃctor LÃ³pez Dhawal Kadao escribiÃ³: [q]> > Thanks Balaji, > > I have a problem in deciding the format of the input data stream. How > to set the format while i input the data through Test bench. I am > using twos complement format to input negative numbers. > For example: My data word is 16 bits. So how are the bits assigned? > What I understand is 1 bit is sign bit, one bit for intefer and rest > 14 bits for fractional value. Is this format correct or is there a way > to define the input sequence. > > Regards, > Dhawal. > > On 9/15/07, <A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A> <mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>> > <<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A> <mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>>> wrote: > > Hi Kadao, > > Xilinx's IP cores are made so easy that it is very much explanatory[/q] on [q]> its own. You can get reference materials on IP cores by doing a > google > search like "Xilinx IP Coregen Memory cores" or blah blah blah.... > > if you need info on any particular or specific core, you could > actually open a Xilinx project in ISE, add the core as a component, > and while generating the core using Xilinx's Coregen Wizard, you[/q] will [q]> actually see a tab or link stating "More info on the core" if you > click that, the wizard directly opens the pdf doc about the specific > coregen component on a new browser. That is the best way to get info > on any particular core. If you need help on instantiating any core, > you will have to do a google search on some examples. > > There are lots and lots of tutorials written by xilinx, and by > students of many many research groups from various universities that > are openly available on the internet, it just matters on what kind[/q] of [q]> key words that you use in google. Better you use, more results you > get. > > As i said FFT's and Memory cores are the most popular cores that are > being used by so many people, so it should be easier to find, also[/q] you [q]> might want to do a search in "Google's Code Search" also, you will > find so many examples(though most results are from the projects of > open cores) but you will get some good results on that too. > > Thanks. > > Balaji R > > > ----- Original Message ----- > From: Dhawal Kadao< <A HREF="http://www.opencores.org/mailman/listinfo/cores">dhawal.kadao at g...</A>> > To: > Date: Fri Sep 14 16:34:56 CEST 2007 > Subject: [oc] Who is going to work on cores? > [q] > Asim, > > I am working on Xilinx ip cores. I have to use fftcore and memory > cores in > my project. I need some reference material and help woth my core. > Thanks, > Dhawal. > On 9/13/07, asim shehzad <attachment-0001.html > >[/q] > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> > > > ------------------------------------------------------------------------ > > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A>[/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] -------------- next part -------------- An HTML attachment was scrubbed... URL: <A HREF="http://www.opencores.org/forums.cgi/cores/attachments/20070918/c654cd10/attachment.htm">http://www.opencores.org/forums.cgi/cores/attachments/20070918/c654cd10/attachment.htm</A> Hi Victor, For the input to FFT the numbers are less than or equal to 1. for eg if the number is 1.5 the binary representatoin is 11 the first 1 being the integer and second being the fractional part. For the input the decimal point is implicit. I am looking for the default location where the core puts the point. Regards, Dhawal. On 9/18/07, VÃctor LÃ³pez victor.lopez at ono.com> wrote: Hi Dhawal, I really do think you should study more carefully the different signed integer notations. For example, just googling for "two's compliment" I found this fairly well explained link: http://en.wikipedia.org/wiki/Two's_complement Take a good look at it and it'll answer your question. By the way, integers are integer numbers.... that is: they don't ever have a fractional part. Regards, VÃctor LÃ³pez Dhawal Kadao escribiÃ³: > > Thanks Balaji, > > I have a problem in deciding the format of the input data stream. How > to set the format while i input the data through Test bench. I am > using twos complement format to input negative numbers. > For example: My data word is 16 bits. So how are the bits assigned? > What I understand is 1 bit is sign bit, one bit for intefer and rest > 14 bits for fractional value. Is this format correct or is there a way > to define the input sequence. > > Regards, > Dhawal. > > On 9/15/07, rbala4ums at hotmail.com rbala4ums at hotmail.com> > rbala4ums at hotmail.com rbala4ums at hotmail.com>> wrote: > > Hi Kadao, > > Xilinx's IP cores are made so easy that it is very much explanatory on > its own. You can get reference materials on IP cores by doing a > google > search like "Xilinx IP Coregen Memory cores" or blah blah blah.... > > if you need info on any particular or specific core, you could > actually open a Xilinx project in ISE, add the core as a component, > and while generating the core using Xilinx's Coregen Wizard, you will > actually see a tab or link stating "More info on the core" if you > click that, the wizard directly opens the pdf doc about the specific > coregen component on a new browser. That is the best way to get info > on any particular core. If you need help on instantiating any core, > you will have to do a google search on some examples. > > There are lots and lots of tutorials written by xilinx, and by > students of many many research groups from various universities that > are openly available on the internet, it just matters on what kind of > key words that you use in google. Better you use, more results you > get. > > As i said FFT's and Memory cores are the most popular cores that are > being used by so many people, so it should be easier to find, also you > might want to do a search in "Google's Code Search" also, you will > find so many examples(though most results are from the projects of > open cores) but you will get some good results on that too. > > Thanks. > > Balaji R > > > ----- Original Message ----- > From: Dhawal Kadaodhawal.kadao at g...> > To: > Date: Fri Sep 14 16:34:56 CEST 2007 > Subject: [oc] Who is going to work on cores? > > Asim, > > I am working on Xilinx ip cores. I have to use fftcore and memory > cores in > my project. I need some reference material and help woth my core. > Thanks, > Dhawal. > On 9/13/07, asim shehzad > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores > > > ------------------------------------------------------------------------ > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores _______________________________________________ http://www.opencores.org/mailman/listinfo/cores -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.opencores.org/forums.cgi/cores/attachments/20070918/c654cd10/attachment.htm

Who is going to work on cores? by Unknown on Sep 19, 2007			Not available!
Hello, You said: [q]> I have a problem in deciding the format of the input data stream. How > to set the format while i input the data through Test bench. I am > using twos complement format to input negative numbers. > For example: My data word is 16 bits. So how are the bits assigned? > What I understand is 1 bit is sign bit, one bit for intefer and rest > 14 bits for fractional value. Is this format correct or is there a way > to define the input sequence.[/q] So my answer is still the same: Two's compliment does not have anything to do with fractions, it is just about integers. The proper name for the format you are talking about is fixed-point numbers. Anyways two's compliment doesn't really just use one sign bit, the whole final stored value is affected by the sign, read the link I put on my earlier response. What are the input formats allowed by the FFT core? Are we talking about the xilinx coregen one whose datasheet can be found here <A HREF="http://www.xilinx.com/ipcenter/catalog/logicore/docs/xfft.pdf">http://www.xilinx.com/ipcenter/catalog/logicore/docs/xfft.pdf</A> ? Then from what I read in the middle of page 3: "As with unscaled arithmetic, for scaled and block floating point arithmetic, the core does not have a specific location for the binary point. The location of the binary point in the output data is inherited from the input data and then shifted by the scaling applied." My remembrance of the internals of FFT is somewhat distorted from the time I learned it, but to me the text reads as: the place where you set the fixed-point is unimportant, as long as you respect it in all the inputs, so at the output you can expect it in the same place (unless you set the scaling parameter of the core to whatever). When in doubt, the best thing to do is the "try it yourself", get some decimal values, FFT them in MatLab or some other software to get the good outputs and then simulate the same inputs in the FFT core to see if the output matches. I also wish the 46 pages of the datasheet where clearer on these things. Regards, VÃctor LÃ³pez Dhawal Kadao escribiÃ³: [q] Hi Victor, For the input to FFT the numbers are less than or equal to 1. for eg if the number is 1.5 the binary representatoin is 11 the first 1 being the integer and second being the fractional part. For the input the decimal point is implicit. I am looking for the default location where the core puts the point. Regards, Dhawal. On 9/18/07, VÃctor LÃ³pez <<A HREF="http://www.opencores.org/mailman/listinfo/cores">victor.lopez at ono.com</A> <mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">victor.lopez at ono.com</A>>> wrote: Hi Dhawal, I really do think you should study more carefully the different signed integer notations. For example, just googling for "two's compliment" I found this fairly well explained link: <A HREF="http://en.wikipedia.org/wiki/Two's_complement">http://en.wikipedia.org/wiki/Two's_complement</A> <<A HREF="http://en.wikipedia.org/wiki/Two%27s_complement">http://en.wikipedia.org/wiki/Two%27s_complement</A>> Take a good look at it and it'll answer your question. By the way, integers are integer numbers.... that is: they don't ever have a fractional part. Regards, VÃctor LÃ³pez Dhawal Kadao escribiÃ³: [q] > > Thanks Balaji, > > I have a problem in deciding the format of the input data[/q] stream. How [q] > to set the format while i input the data through Test bench. I am > using twos complement format to input negative numbers. > For example: My data word is 16 bits. So how are the bits assigned? > What I understand is 1 bit is sign bit, one bit for intefer and[/q] rest [q] > 14 bits for fractional value. Is this format correct or is there[/q] a way [q] > to define the input sequence. > > Regards, > Dhawal. > > On 9/15/07, * <A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>[/q] <mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>> <mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A> <mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>>>* [q] > <<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A> <mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>> <mailto:[/q] <A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A> <mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>>>> wrote: [q] > > Hi Kadao, > > Xilinx's IP cores are made so easy that it is very much[/q] explanatory on [q] > its own. You can get reference materials on IP cores by doing a > google > search like "Xilinx IP Coregen Memory cores" or blah blah[/q] blah.... [q] > > if you need info on any particular or specific core, you could > actually open a Xilinx project in ISE, add the core as a[/q] component, [q] > and while generating the core using Xilinx's Coregen Wizard,[/q] you will [q] > actually see a tab or link stating "More info on the core"[/q] if you [q] > click that, the wizard directly opens the pdf doc about the[/q] specific [q] > coregen component on a new browser. That is the best way to[/q] get info [q] > on any particular core. If you need help on instantiating[/q] any core, [q] > you will have to do a google search on some examples. > > There are lots and lots of tutorials written by xilinx, and by > students of many many research groups from various[/q] universities that [q] > are openly available on the internet, it just matters on[/q] what kind of [q] > key words that you use in google. Better you use, more[/q] results you [q] > get. > > As i said FFT's and Memory cores are the most popular cores[/q] that are [q] > being used by so many people, so it should be easier to[/q] find, also you [q] > might want to do a search in "Google's Code Search" also,[/q] you will [q] > find so many examples(though most results are from the[/q] projects of [q] > open cores) but you will get some good results on that too. > > Thanks. > > Balaji R > > > ----- Original Message ----- > From: Dhawal Kadao< <A HREF="http://www.opencores.org/mailman/listinfo/cores">dhawal.kadao at g...</A>> > To: > Date: Fri Sep 14 16:34:56 CEST 2007 > Subject: [oc] Who is going to work on cores? > [q] > > Asim, > > > > I am working on Xilinx ip cores. I have to use fftcore and[/q] memory [q] > > cores in > > my project. I need some reference material and help woth[/q] my core. [q] > > Thanks, > > Dhawal. > > On 9/13/07, asim shehzad <attachment-0001.html > > > >[/q] > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> > > >[/q] ------------------------------------------------------------------------ [q] > > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A>[/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> ------------------------------------------------------------------------ _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A>[/q] Hello, You said: > I have a problem in deciding the format of the input data stream. How > to set the format while i input the data through Test bench. I am > using twos complement format to input negative numbers. > For example: My data word is 16 bits. So how are the bits assigned? > What I understand is 1 bit is sign bit, one bit for intefer and rest > 14 bits for fractional value. Is this format correct or is there a way > to define the input sequence. So my answer is still the same: Two's compliment does not have anything to do with fractions, it is just about integers. The proper name for the format you are talking about is fixed-point numbers. Anyways two's compliment doesn't really just use one sign bit, the whole final stored value is affected by the sign, read the link I put on my earlier response. What are the input formats allowed by the FFT core? Are we talking about the xilinx coregen one whose datasheet can be found here http://www.xilinx.com/ipcenter/catalog/logicore/docs/xfft.pdf ? Then from what I read in the middle of page 3: "As with unscaled arithmetic, for scaled and block floating point arithmetic, the core does not have a specific location for the binary point. The location of the binary point in the output data is inherited from the input data and then shifted by the scaling applied." My remembrance of the internals of FFT is somewhat distorted from the time I learned it, but to me the text reads as: the place where you set the fixed-point is unimportant, as long as you respect it in all the inputs, so at the output you can expect it in the same place (unless you set the scaling parameter of the core to whatever). When in doubt, the best thing to do is the "try it yourself", get some decimal values, FFT them in MatLab or some other software to get the good outputs and then simulate the same inputs in the FFT core to see if the output matches. I also wish the 46 pages of the datasheet where clearer on these things. Regards, VÃctor LÃ³pez Dhawal Kadao escribiÃ³: Hi Victor, For the input to FFT the numbers are less than or equal to 1. for eg if the number is 1.5 the binary representatoin is 11 the first 1 being the integer and second being the fractional part. For the input the decimal point is implicit. I am looking for the default location where the core puts the point. Regards, Dhawal. On 9/18/07, VÃctor LÃ³pez victor.lopez at ono.com victor.lopez at ono.com>> wrote: Hi Dhawal, I really do think you should study more carefully the different signed integer notations. For example, just googling for "two's compliment" I found this fairly well explained link: http://en.wikipedia.org/wiki/Two's_complement http://en.wikipedia.org/wiki/Two%27s_complement> Take a good look at it and it'll answer your question. By the way, integers are integer numbers.... that is: they don't ever have a fractional part. Regards, VÃctor LÃ³pez Dhawal Kadao escribiÃ³: > > Thanks Balaji, > > I have a problem in deciding the format of the input data stream. How > to set the format while i input the data through Test bench. I am > using twos complement format to input negative numbers. > For example: My data word is 16 bits. So how are the bits assigned? > What I understand is 1 bit is sign bit, one bit for intefer and rest > 14 bits for fractional value. Is this format correct or is there a way > to define the input sequence. > > Regards, > Dhawal. > > On 9/15/07, * rbala4ums at hotmail.com rbala4ums at hotmail.com> rbala4ums at hotmail.com rbala4ums at hotmail.com>>* > rbala4ums at hotmail.com rbala4ums at hotmail.com> rbala4ums at hotmail.com rbala4ums at hotmail.com>>> wrote: > > Hi Kadao, > > Xilinx's IP cores are made so easy that it is very much explanatory on > its own. You can get reference materials on IP cores by doing a > google > search like "Xilinx IP Coregen Memory cores" or blah blah blah.... > > if you need info on any particular or specific core, you could > actually open a Xilinx project in ISE, add the core as a component, > and while generating the core using Xilinx's Coregen Wizard, you will > actually see a tab or link stating "More info on the core" if you > click that, the wizard directly opens the pdf doc about the specific > coregen component on a new browser. That is the best way to get info > on any particular core. If you need help on instantiating any core, > you will have to do a google search on some examples. > > There are lots and lots of tutorials written by xilinx, and by > students of many many research groups from various universities that > are openly available on the internet, it just matters on what kind of > key words that you use in google. Better you use, more results you > get. > > As i said FFT's and Memory cores are the most popular cores that are > being used by so many people, so it should be easier to find, also you > might want to do a search in "Google's Code Search" also, you will > find so many examples(though most results are from the projects of > open cores) but you will get some good results on that too. > > Thanks. > > Balaji R > > > ----- Original Message ----- > From: Dhawal Kadaodhawal.kadao at g...> > To: > Date: Fri Sep 14 16:34:56 CEST 2007 > Subject: [oc] Who is going to work on cores? > > > Asim, > > > > I am working on Xilinx ip cores. I have to use fftcore and memory > > cores in > > my project. I need some reference material and help woth my core. > > Thanks, > > Dhawal. > > On 9/13/07, asim shehzad > > > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores > > > ------------------------------------------------------------------------ > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores _______________________________________________ http://www.opencores.org/mailman/listinfo/cores ------------------------------------------------------------------------ _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

Who is going to work on cores? by Unknown on Sep 19, 2007			Not available!
Hi Dhawal, "How to set the format while i input the data through Test bench?" What do you mean by that? I don't understand the question. And yes, in fixed point system, if you use signed convention, usually "MSB" is the sign bit, and you can set the convention for the input data, that the core should use, while generating the core. Your test bench should be the numbers that you want to test, what do you mean by inputting fractional part? I guess you are getting confused with number representations, i would suggest reading some digital systems book, and you would get a better understanding. Thanks Balaji R ----- Original Message ----- From: VÃctor LÃ³pez<<A HREF="http://www.opencores.org/mailman/listinfo/cores">victor.lopez at o...</A>> To: Date: Tue Sep 18 16:33:29 CEST 2007 Subject: [oc] Who is going to work on cores? [q] Hi Dhawal, I really do think you should study more carefully the different signed integer notations. For example, just googling for "two's compliment" I found this fairly well explained link: <A HREF="http://en.wikipedia.org/wiki/Two's_complement">http://en.wikipedia.org/wiki/Two's_complement</A> Take a good look at it and it'll answer your question. By the way, integers are integer numbers.... that is: they don't ever have a fractional part. Regards, VÃctor LÃ³pez Dhawal Kadao escribiÃ³: [q]> > Thanks Balaji, > > I have a problem in deciding the format of the input data [/q] stream. How [q]> to set the format while i input the data through Test bench. I [/q] am [q]> using twos complement format to input negative numbers. > For example: My data word is 16 bits. So how are the bits [/q] assigned? [q]> What I understand is 1 bit is sign bit, one bit for intefer [/q] and rest [q]> 14 bits for fractional value. Is this format correct or is [/q] there a way [q]> to define the input sequence. > > Regards, > Dhawal. > > On 9/15/07, rbala4ums at hotmail.com <mailto:rbala4ums at [/q] hotmail.com> [q]> <rbala4ums at hotmail.com <mailto:rbala4ums at [/q] hotmail.com>> wrote: [q]> > Hi Kadao, > > Xilinx's IP cores are made so easy that it is very much [/q] explanatory on [q]> its own. You can get reference materials on IP cores by doing [/q] a [q]> google > search like "Xilinx IP Coregen Memory cores" or blah [/q] blah blah.... [q]> > if you need info on any particular or specific core, you could > actually open a Xilinx project in ISE, add the core as a [/q] component, [q]> and while generating the core using Xilinx's Coregen Wizard, [/q] you will [q]> actually see a tab or link stating "More info on the [/q] core" if you [q]> click that, the wizard directly opens the pdf doc about the [/q] specific [q]> coregen component on a new browser. That is the best way to [/q] get info [q]> on any particular core. If you need help on instantiating any [/q] core, [q]> you will have to do a google search on some examples. > > There are lots and lots of tutorials written by xilinx, and by > students of many many research groups from various [/q] universities that [q]> are openly available on the internet, it just matters on what [/q] kind of [q]> key words that you use in google. Better you use, more results [/q] you [q]> get. > > As i said FFT's and Memory cores are the most popular cores [/q] that are [q]> being used by so many people, so it should be easier to find, [/q] also you [q]> might want to do a search in "Google's Code Search" [/q] also, you will [q]> find so many examples(though most results are from the [/q] projects of [q]> open cores) but you will get some good results on that too. > > Thanks. > > Balaji R > > > ----- Original Message ----- > From: Dhawal Kadao< dhawal.kadao at g...> > To: > Date: Fri Sep 14 16:34:56 CEST 2007 > Subject: [oc] Who is going to work on cores? > [q] > Asim, > > I am working on Xilinx ip cores. I have to use fftcore [/q] and memory [q] > cores in > my project. I need some reference material and help woth [/q] my core. [q] > Thanks, > Dhawal. > On 9/13/07, asim shehzad <attachment-0001.html > > [/q] > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> > > > [/q] [/q] ------------------------------------------------------------------------ [q]> > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] [/q] Hi Dhawal, "How to set the format while i input the data through Test bench?" What do you mean by that? I don't understand the question. And yes, in fixed point system, if you use signed convention, usually "MSB" is the sign bit, and you can set the convention for the input data, that the core should use, while generating the core. Your test bench should be the numbers that you want to test, what do you mean by inputting fractional part? I guess you are getting confused with number representations, i would suggest reading some digital systems book, and you would get a better understanding. Thanks Balaji R ----- Original Message ----- From: VÃctor LÃ³pezvictor.lopez at o...> To: Date: Tue Sep 18 16:33:29 CEST 2007 Subject: [oc] Who is going to work on cores? Hi Dhawal, I really do think you should study more carefully the different signed integer notations. For example, just googling for "two's compliment" I found this fairly well explained link: http://en.wikipedia.org/wiki/Two's_complement Take a good look at it and it'll answer your question. By the way, integers are integer numbers.... that is: they don't ever have a fractional part. Regards, VÃctor LÃ³pez Dhawal Kadao escribiÃ³: > > Thanks Balaji, > > I have a problem in deciding the format of the input data stream. How > to set the format while i input the data through Test bench. I am > using twos complement format to input negative numbers. > For example: My data word is 16 bits. So how are the bits assigned? > What I understand is 1 bit is sign bit, one bit for intefer and rest > 14 bits for fractional value. Is this format correct or is there a way > to define the input sequence. > > Regards, > Dhawal. > > On 9/15/07, rbala4ums at hotmail.com hotmail.com> > hotmail.com>> wrote: > > Hi Kadao, > > Xilinx's IP cores are made so easy that it is very much explanatory on > its own. You can get reference materials on IP cores by doing a > google > search like "Xilinx IP Coregen Memory cores" or blah blah blah.... > > if you need info on any particular or specific core, you could > actually open a Xilinx project in ISE, add the core as a component, > and while generating the core using Xilinx's Coregen Wizard, you will > actually see a tab or link stating "More info on the core" if you > click that, the wizard directly opens the pdf doc about the specific > coregen component on a new browser. That is the best way to get info > on any particular core. If you need help on instantiating any core, > you will have to do a google search on some examples. > > There are lots and lots of tutorials written by xilinx, and by > students of many many research groups from various universities that > are openly available on the internet, it just matters on what kind of > key words that you use in google. Better you use, more results you > get. > > As i said FFT's and Memory cores are the most popular cores that are > being used by so many people, so it should be easier to find, also you > might want to do a search in "Google's Code Search" also, you will > find so many examples(though most results are from the projects of > open cores) but you will get some good results on that too. > > Thanks. > > Balaji R > > > ----- Original Message ----- > From: Dhawal Kadao > To: > Date: Fri Sep 14 16:34:56 CEST 2007 > Subject: [oc] Who is going to work on cores? > > Asim, > > I am working on Xilinx ip cores. I have to use fftcore and memory > cores in > my project. I need some reference material and help woth my core. > Thanks, > Dhawal. > On 9/13/07, asim shehzad > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores > > > ------------------------------------------------------------------------ > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores

Who is going to work on cores? by Unknown on Sep 19, 2007			Not available!
Thanks Balaji, I will read the documents related to number representations. But one small question if I need to input the value -0.9425 to my fft core in 16 bit format what should be my approach. the twos complement representation of -0.9425 in binary format is 1000011101011100 while 0.9425 in binary format is 0111100010100100. From this I understand that first bit is the sign bitand rest of the bits represent the fractional value of the number. Now the problem is how should I represent 1 and -1. On 9/18/07, <A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A> <<A HREF="http://www.opencores.org/mailman/listinfo/cores">rbala4ums at hotmail.com</A>> wrote: [q] Hi Dhawal, "How to set the format while i input the data through Test bench?" What do you mean by that? I don't understand the question. And yes, in fixed point system, if you use signed convention, usually "MSB" is the sign bit, and you can set the convention for the input data, that the core should use, while generating the core. Your test bench should be the numbers that you want to test, what do you mean by inputting fractional part? I guess you are getting confused with number representations, i would suggest reading some digital systems book, and you would get a better understanding. Thanks Balaji R ----- Original Message ----- From: VÃctor LÃ³pez<<A HREF="http://www.opencores.org/mailman/listinfo/cores">victor.lopez at o...</A>> To: Date: Tue Sep 18 16:33:29 CEST 2007 Subject: [oc] Who is going to work on cores? [q]> Hi Dhawal, > > I really do think you should study more carefully the different > signed integer notations. For example, just googling for > "two's > compliment" I found this fairly well explained link: > <A HREF="http://en.wikipedia.org/wiki/Two's_complement">http://en.wikipedia.org/wiki/Two's_complement</A> > Take a good look at it and it'll answer your question. By the way, > integers are integer numbers.... that is: they don't ever have a > fractional part. > Regards, > VÃctor LÃ³pez > Dhawal Kadao escribiÃ³: [q] > > Thanks Balaji, > > I have a problem in deciding the format of the input data[/q] > stream. How [q] > to set the format while i input the data through Test bench. I[/q] > am [q] > using twos complement format to input negative numbers. > For example: My data word is 16 bits. So how are the bits[/q] > assigned? [q] > What I understand is 1 bit is sign bit, one bit for intefer[/q] > and rest [q] > 14 bits for fractional value. Is this format correct or is[/q] > there a way [q] > to define the input sequence. > > Regards, > Dhawal. > > On 9/15/07, rbala4ums at hotmail.com <mailto:rbala4ums at[/q] > hotmail.com> [q] > <rbala4ums at hotmail.com <mailto:rbala4ums at[/q] > hotmail.com>> wrote: [q] > > Hi Kadao, > > Xilinx's IP cores are made so easy that it is very much[/q] > explanatory on [q] > its own. You can get reference materials on IP cores by doing[/q] > a [q] > google > search like "Xilinx IP Coregen Memory cores" or blah[/q] > blah blah.... [q] > > if you need info on any particular or specific core, you could > actually open a Xilinx project in ISE, add the core as a[/q] > component, [q] > and while generating the core using Xilinx's Coregen Wizard,[/q] > you will [q] > actually see a tab or link stating "More info on the[/q] > core" if you [q] > click that, the wizard directly opens the pdf doc about the[/q] > specific [q] > coregen component on a new browser. That is the best way to[/q] > get info [q] > on any particular core. If you need help on instantiating any[/q] > core, [q] > you will have to do a google search on some examples. > > There are lots and lots of tutorials written by xilinx, and by > students of many many research groups from various[/q] > universities that [q] > are openly available on the internet, it just matters on what[/q] > kind of [q] > key words that you use in google. Better you use, more results[/q] > you [q] > get. > > As i said FFT's and Memory cores are the most popular cores[/q] > that are [q] > being used by so many people, so it should be easier to find,[/q] > also you [q] > might want to do a search in "Google's Code Search"[/q] > also, you will [q] > find so many examples(though most results are from the[/q] > projects of [q] > open cores) but you will get some good results on that too. > > Thanks. > > Balaji R > > > ----- Original Message ----- > From: Dhawal Kadao< dhawal.kadao at g...> > To: > Date: Fri Sep 14 16:34:56 CEST 2007 > Subject: [oc] Who is going to work on cores? > [q]> > Asim, > > > > I am working on Xilinx ip cores. I have to use fftcore[/q] > and memory [q]> > cores in > > my project. I need some reference material and help woth[/q] > my core. [q]> > Thanks, > > Dhawal. > > On 9/13/07, asim shehzad <attachment-0001.html > > > >[/q] > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> > > >[/q] >[/q] ------------------------------------------------------------------------ [q] > > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A>[/q] > >[/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] -------------- next part -------------- An HTML attachment was scrubbed... URL: <A HREF="http://www.opencores.org/forums.cgi/cores/attachments/20070919/ffdde492/attachment.htm">http://www.opencores.org/forums.cgi/cores/attachments/20070919/ffdde492/attachment.htm</A> Thanks Balaji, I will read the documents related to number representations. But one small question if I need to input the value -0.9425 to my fft core in 16 bit format what should be my approach. the twos complement representation of -0.9425 in binary format is 1000011101011100 while 0.9425 in binary format is 0111100010100100. From this I understand that first bit is the sign bitand rest of the bits represent the fractional value of the number. Now the problem is how should I represent 1 and -1. On 9/18/07, rbala4ums at hotmail.com rbala4ums at hotmail.com> wrote: Hi Dhawal, "How to set the format while i input the data through Test bench?" What do you mean by that? I don't understand the question. And yes, in fixed point system, if you use signed convention, usually "MSB" is the sign bit, and you can set the convention for the input data, that the core should use, while generating the core. Your test bench should be the numbers that you want to test, what do you mean by inputting fractional part? I guess you are getting confused with number representations, i would suggest reading some digital systems book, and you would get a better understanding. Thanks Balaji R ----- Original Message ----- From: VÃctor LÃ³pezvictor.lopez at o...> To: Date: Tue Sep 18 16:33:29 CEST 2007 Subject: [oc] Who is going to work on cores? > Hi Dhawal, > > I really do think you should study more carefully the different > signed integer notations. For example, just googling for > "two's > compliment" I found this fairly well explained link: > http://en.wikipedia.org/wiki/Two's_complement > Take a good look at it and it'll answer your question. By the way, > integers are integer numbers.... that is: they don't ever have a > fractional part. > Regards, > VÃctor LÃ³pez > Dhawal Kadao escribiÃ³: > > Thanks Balaji, > > I have a problem in deciding the format of the input data > stream. How > to set the format while i input the data through Test bench. I > am > using twos complement format to input negative numbers. > For example: My data word is 16 bits. So how are the bits > assigned? > What I understand is 1 bit is sign bit, one bit for intefer > and rest > 14 bits for fractional value. Is this format correct or is > there a way > to define the input sequence. > > Regards, > Dhawal. > > On 9/15/07, rbala4ums at hotmail.com > hotmail.com> > > hotmail.com>> wrote: > > Hi Kadao, > > Xilinx's IP cores are made so easy that it is very much > explanatory on > its own. You can get reference materials on IP cores by doing > a > google > search like "Xilinx IP Coregen Memory cores" or blah > blah blah.... > > if you need info on any particular or specific core, you could > actually open a Xilinx project in ISE, add the core as a > component, > and while generating the core using Xilinx's Coregen Wizard, > you will > actually see a tab or link stating "More info on the > core" if you > click that, the wizard directly opens the pdf doc about the > specific > coregen component on a new browser. That is the best way to > get info > on any particular core. If you need help on instantiating any > core, > you will have to do a google search on some examples. > > There are lots and lots of tutorials written by xilinx, and by > students of many many research groups from various > universities that > are openly available on the internet, it just matters on what > kind of > key words that you use in google. Better you use, more results > you > get. > > As i said FFT's and Memory cores are the most popular cores > that are > being used by so many people, so it should be easier to find, > also you > might want to do a search in "Google's Code Search" > also, you will > find so many examples(though most results are from the > projects of > open cores) but you will get some good results on that too. > > Thanks. > > Balaji R > > > ----- Original Message ----- > From: Dhawal Kadao > To: > Date: Fri Sep 14 16:34:56 CEST 2007 > Subject: [oc] Who is going to work on cores? > > > Asim, > > > > I am working on Xilinx ip cores. I have to use fftcore > and memory > > cores in > > my project. I need some reference material and help woth > my core. > > Thanks, > > Dhawal. > > On 9/13/07, asim shehzad > > > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores > > > > ------------------------------------------------------------------------ > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores > > _______________________________________________ http://www.opencores.org/mailman/listinfo/cores -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.opencores.org/forums.cgi/cores/attachments/20070919/ffdde492/attachment.htm

Who is going to work on cores? by Unknown on Sep 20, 2007			Not available!
Hi Dhawal, While creating the core, check the option of "Signed Representation" or something of that sort, if you create the core using Coregen Wizard, it will be 2-3 steps generation, i suppose it comes up in the first step itself, and it will ask for the convention of your input, and select signed representation there, and while giving testbench, give the input as 16'b1000011101011100. It should work hopefully. Thanks Balaji R ----- Original Message ----- From: Dhawal Kadao<<A HREF="http://www.opencores.org/mailman/listinfo/cores">dhawal.kadao at g...</A>> To: Date: Wed Sep 19 06:03:12 CEST 2007 Subject: [oc] Who is going to work on cores? [q] Thanks Balaji, I will read the documents related to number representations. But one small question if I need to input the value -0.9425 to my fft core in 16 bit format what should be my approach. the twos complement representation of -0.9425 in binary format is 1000011101011100 while 0.9425 in binary format is 0111100010100100. From this I understand that first bit is the sign bitand rest of the bits represent the fractional value of the number. Now the problem is how should I represent 1 and -1. On 9/18/07, attachment.html [q] > Take a good look at it and it'll answer your question. By [/q] the way, [q] > integers are integer numbers.... that is: they don't ever [/q] have a [q] > fractional part. > Regards, > VÃctor LÃ³pez > Dhawal Kadao escribiÃ³: [q]> > > > Thanks Balaji, > > > > I have a problem in deciding the format of the input [/q] data [q] > stream. How [q]> > to set the format while i input the data through [/q] Test bench. I [q] > am [q]> > using twos complement format to input negative [/q] numbers. [q]> > For example: My data word is 16 bits. So how are the [/q] bits [q] > assigned? [q]> > What I understand is 1 bit is sign bit, one bit for [/q] intefer [q] > and rest [q]> > 14 bits for fractional value. Is this format correct [/q] or is [q] > there a way [q]> > to define the input sequence. > > > > Regards, > > Dhawal. > > > > On 9/15/07, rbala4ums at hotmail.com [/q] <mailto:rbala4ums at [q] > hotmail.com> [q]> > <rbala4ums at hotmail.com <mailto:rbala4ums at [/q] > hotmail.com>> wrote: [q]> > > > Hi Kadao, > > > > Xilinx's IP cores are made so easy that it is very [/q] much [q] > explanatory on [q]> > its own. You can get reference materials on IP cores [/q] by doing [q] > a [q]> > google > > search like "Xilinx IP Coregen Memory [/q] cores" or blah [q] > blah blah.... [q]> > > > if you need info on any particular or specific core, [/q] you could [q]> > actually open a Xilinx project in ISE, add the core [/q] as a [q] > component, [q]> > and while generating the core using Xilinx's Coregen [/q] Wizard, [q] > you will [q]> > actually see a tab or link stating "More info [/q] on the [q] > core" if you [q]> > click that, the wizard directly opens the pdf doc [/q] about the [q] > specific [q]> > coregen component on a new browser. That is the best [/q] way to [q] > get info [q]> > on any particular core. If you need help on [/q] instantiating any [q] > core, [q]> > you will have to do a google search on some [/q] examples. [q]> > > > There are lots and lots of tutorials written by [/q] xilinx, and by [q]> > students of many many research groups from various [/q] > universities that > > > are openly available on [/q] the internet, it just matters on what > > kind of > > [q]> key words that you use in google. Better you use, more results [q] > you > > > get. > > > > > > As [/q] i said FFT's and Memory cores are the most popular cores > > that are > > > being used by so many people, so it should be easier to find, > > also you > > > might want to do a search in "Google's Code Search" > > also, you will > > > find so many examples(though most results are from the > > projects of > > > open cores) but you will get some good results on that too. > > > > > [q]> Thanks. > > > > > > Balaji R > > > [q] > > > ----- Original Message ----- > [/q] > From: Dhawal Kadao< dhawal.kadao at g...> > > [/q] > To: > > > Date: Fri Sep 14 16:34:56 CEST 2007 > [q] > Subject: [oc] Who is going to work on cores? > > [q]> > > Asim, > > > > > > > [/q] > I am working on Xilinx ip cores. I have to use fftcore > > and memory > > > > cores in > > > > my [/q] project. I need some reference material and help woth > > my core. > > > > Thanks, > > > > Dhawal. > [q]> > On 9/13/07, asim shehzad <attachment-0001.html [q]> > > > > > [/q] _______________________________________________ > > > attachment.html > > > > > > > > > > [q] > [/q] [/q] ------------------------------------------------------------------------ [q] > > > [/q] _______________________________________________ > > > attachment.html > > > > > _______________________________________________ > attachment.html > -------------- next part -------------- An HTML attachment was scrubbed... URL: attachment.html [/q] Hi Dhawal, While creating the core, check the option of "Signed Representation" or something of that sort, if you create the core using Coregen Wizard, it will be 2-3 steps generation, i suppose it comes up in the first step itself, and it will ask for the convention of your input, and select signed representation there, and while giving testbench, give the input as 16'b1000011101011100. It should work hopefully. Thanks Balaji R ----- Original Message ----- From: Dhawal Kadaodhawal.kadao at g...> To: Date: Wed Sep 19 06:03:12 CEST 2007 Subject: [oc] Who is going to work on cores? Thanks Balaji, I will read the documents related to number representations. But one small question if I need to input the value -0.9425 to my fft core in 16 bit format what should be my approach. the twos complement representation of -0.9425 in binary format is 1000011101011100 while 0.9425 in binary format is 0111100010100100. From this I understand that first bit is the sign bitand rest of the bits represent the fractional value of the number. Now the problem is how should I represent 1 and -1. On 9/18/07, attachment.html > Take a good look at it and it'll answer your question. By the way, > integers are integer numbers.... that is: they don't ever have a > fractional part. > Regards, > VÃctor LÃ³pez > Dhawal Kadao escribiÃ³: > > > > Thanks Balaji, > > > > I have a problem in deciding the format of the input data > stream. How > > to set the format while i input the data through Test bench. I > am > > using twos complement format to input negative numbers. > > For example: My data word is 16 bits. So how are the bits > assigned? > > What I understand is 1 bit is sign bit, one bit for intefer > and rest > > 14 bits for fractional value. Is this format correct or is > there a way > > to define the input sequence. > > > > Regards, > > Dhawal. > > > > On 9/15/07, rbala4ums at hotmail.com > hotmail.com> > > > hotmail.com>> wrote: > > > > Hi Kadao, > > > > Xilinx's IP cores are made so easy that it is very much > explanatory on > > its own. You can get reference materials on IP cores by doing > a > > google > > search like "Xilinx IP Coregen Memory cores" or blah > blah blah.... > > > > if you need info on any particular or specific core, you could > > actually open a Xilinx project in ISE, add the core as a > component, > > and while generating the core using Xilinx's Coregen Wizard, > you will > > actually see a tab or link stating "More info on the > core" if you > > click that, the wizard directly opens the pdf doc about the > specific > > coregen component on a new browser. That is the best way to > get info > > on any particular core. If you need help on instantiating any > core, > > you will have to do a google search on some examples. > > > > There are lots and lots of tutorials written by xilinx, and by > > students of many many research groups from various > universities that > > > are openly available on the internet, it just matters on what > > kind of > > > key words that you use in google. Better you use, more results > you > > > get. > > > > > > As i said FFT's and Memory cores are the most popular cores > > that are > > > being used by so many people, so it should be easier to find, > > also you > > > might want to do a search in "Google's Code Search" > > also, you will > > > find so many examples(though most results are from the > > projects of > > > open cores) but you will get some good results on that too. > > > > > > Thanks. > > > > > > Balaji R > > > > > > ----- Original Message ----- > > From: Dhawal Kadao > > > To: > > > Date: Fri Sep 14 16:34:56 CEST 2007 > > Subject: [oc] Who is going to work on cores? > > > > > Asim, > > > > > > > > I am working on Xilinx ip cores. I have to use fftcore > > and memory > > > > cores in > > > > my project. I need some reference material and help woth > > my core. > > > > Thanks, > > > > Dhawal. > > > On 9/13/07, asim shehzad > > > > > > _______________________________________________ > > > attachment.html > > > > > > > > > > > ------------------------------------------------------------------------ > > > _______________________________________________ > > > attachment.html > > > > > _______________________________________________ > attachment.html > -------------- next part -------------- An HTML attachment was scrubbed... URL: attachment.html

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