Custom Search
Site Home Archive Home FAQ Home How to search the Archive How to Navigate the Archive
Compare FPGA features and resources
Threads starting:
Authors:A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Probably need to hack it a bit and see what results you experience. Maybe post to a "Digital Camera" N/Gs? "Krist Neot" <Krist_Neot@hotmail.com> wrote in message news:42a5306c$1@news.starhub.net.sg... > In my old Olympus C900Z, it has very brilliant color display, and a > resonable > 240*180 resolution. When I opened it, the connectors and everything are in > good order. Now I need to find out the connection so that I can use it in > my > hobby projects. Is there a standard connection for such small LCD > displays? > > Thanks. > >Article: 85251
Word on the street is Spartan-3 lead times are generally increasing at the moment. We are seeing that ourselves. I believe there has been a big "turn on" of projects using the parts lately. Hopefully the boys and girls at Xilinx are ramping production to catch up. We can't help you on PQ208 but we do have some XC3S200 VQG100 I believe within our strategic spartan-3 stocks. It is also worth talking to the Memec in the UK you deal with and see if they have better lead times on variations of what you need i.e. speed grade, industrial grade etc. They don't tend to carry a lot of stock as they get burned if it does not sell so mostly it is a place an order an wait. Some places outside the UK sometimes carry stock so worth doing a search if you are desperate. I have not tried it myself but Xilinx sell XC3S200 direct of their website and I don't know if they have issues in them shipping to the UK. John Adair Enterpoint Ltd. - Home of Broaddown2. The Ultimate Spartan3 Development Board. http://www.enterpoint.co.uk "Fred" <Fred@nospam.com> wrote in message news:42a4e251$0$4095$db0fefd9@news.zen.co.uk... > > "Peter Alfke" <peter@xilinx.com> wrote in message > news:1118091416.990182.179050@g14g2000cwa.googlegroups.com... >> Frederic, >> We have plenty of XC3S200, but how can we halp you when you give >> neither your name nor your company affiliation. Being "pissed off" is >> no good when you give us no chance to help you. >> >> Peter Alfke, Xilinx >> > > Perhaps by telling that to Insight Memec in the UK rather than telling > them there's a 14 week lead time! Also having more than one distributor > in the UK may inspire some customer appreciation. >Article: 85252
Hi all , I wanted to implement a fast and low area sorting algorithm in Verilog RTL, does anyone have any suggestions? Any links to IEEE papers, articles are higly welcome... regards Deepu JohnArticle: 85253
Thanks for your offer but I need the pins. Xilinx have their buy online store but they only sell CPLDs there. A reply to an email I sent to "online store" said talk to your distributor and sales office which are things I had already done. I have searched in vain but can't get any hint of sourcing samples off their website. Do you have any links? "John Adair" <removethisthenleavejea@replacewithcompanyname.co.uk> wrote in message news:1118138706.27056.0@damia.uk.clara.net... > Word on the street is Spartan-3 lead times are generally increasing at the > moment. We are seeing that ourselves. I believe there has been a big "turn > on" of projects using the parts lately. Hopefully the boys and girls at > Xilinx are ramping production to catch up. > > We can't help you on PQ208 but we do have some XC3S200 VQG100 I believe > within our strategic spartan-3 stocks. It is also worth talking to the > Memec in the UK you deal with and see if they have better lead times on > variations of what you need i.e. speed grade, industrial grade etc. They > don't tend to carry a lot of stock as they get burned if it does not sell > so mostly it is a place an order an wait. Some places outside the UK > sometimes carry stock so worth doing a search if you are desperate. > > I have not tried it myself but Xilinx sell XC3S200 direct of their website > and I don't know if they have issues in them shipping to the UK. > > John Adair > Enterpoint Ltd. - Home of Broaddown2. The Ultimate Spartan3 Development > Board. > http://www.enterpoint.co.uk > > > "Fred" <Fred@nospam.com> wrote in message > news:42a4e251$0$4095$db0fefd9@news.zen.co.uk... >> >> "Peter Alfke" <peter@xilinx.com> wrote in message >> news:1118091416.990182.179050@g14g2000cwa.googlegroups.com... >>> Frederic, >>> We have plenty of XC3S200, but how can we halp you when you give >>> neither your name nor your company affiliation. Being "pissed off" is >>> no good when you give us no chance to help you. >>> >>> Peter Alfke, Xilinx >>> >> >> Perhaps by telling that to Insight Memec in the UK rather than telling >> them there's a 14 week lead time! Also having more than one distributor >> in the UK may inspire some customer appreciation. >> > >Article: 85254
The question is how many values you want to sort... basically, this is iterative algorithm, so for a large set, a big memory and controller will be small but long. as you posted on comp.arch.fpga, you might like this one: http://www.xilinx.com/xcell/xl23/xl23_16.pdf else googlize "rank order filter" john.deepu@gmail.com wrote: > Hi all , > I wanted to implement a fast and low area sorting algorithm in Verilog > RTL, does anyone have any suggestions? > Any links to IEEE papers, articles are higly welcome... > > regards > Deepu John >Article: 85255
I wanted to sort 48 8bit unsigned numbersArticle: 85256
Pierre,
First I would check the power supply
Aurash
Pierre wrote:
>Hello,
>I'm using a Virtex-II Pro with 1 PowerPC 405. All worked very well until the
>moment I had to add big FIR filters (2 D.A. with 85 taps and 2 MAC with 17
>taps). Now, at any time, the programm stop: the FPGA part continue to work
>but the PPC part doesn't work anymore. The only solution to continue is to
>reset the board.
>
>Is it because the number of slices occupied grow up from 48 % to more than
>75 % and it's to big for the PPC? Does someone have find the same problem ?
>
>My configuration:
>PPC @ 300 MHz
>16ko ISOCM (for PPC instructions)
>16ko PLB BRAM (for PPC data)
>32 ko DOCM BRAM (use as dual port between "PPC part" and "FPGA part")
>FPGA with external clock at 60 MHz (multiply by 2 with DCM)
>
>Thank you for our help.
>
>Pierre
>
>
>
>
--
__
/ /\/\ Aurelian Lazarut
\ \ / System Verification Engineer
/ / \ Xilinx Ireland
\_\/\/
phone: 353 01 4032639
fax: 353 01 4640324
Article: 85257They seem to have broken this in last week's "upgrade" of the website. It was definately there a few weeks ago because I looked at with one of our customers. There is a button on http://www.xilinx.com/xlnx/xil_prodcat_landingpage.jsp?title=Spartan-3 for buying samples but it seems to have something not right about it too. Moral of the story is order your FPGA parts at the beginning of your project. It is usually the limiting factor in fast turn board design and prototype. We have been burned before so we carry our own small strategic stocks of things we might use and have delivered custom FPGA board designs to customer in less than 3 weeks by having these parts available. If your project has any amount of production volume behind it talk to your rep a bit harder. It is sometimes amazing what can be done for the right project. John Adair Enterpoint Ltd. - Home of Broaddown2. The Ultimate Spartan3 Development Board. http://www.enterpoint.co.uk "Fred" <Fred@nospam.com> wrote in message news:42a57bc6$0$23699$db0fefd9@news.zen.co.uk... > Thanks for your offer but I need the pins. > > Xilinx have their buy online store but they only sell CPLDs there. A > reply to an email I sent to "online store" said talk to your distributor > and sales office which are things I had already done. I have searched in > vain but can't get any hint of sourcing samples off their website. Do you > have any links? > > > "John Adair" <removethisthenleavejea@replacewithcompanyname.co.uk> wrote > in message news:1118138706.27056.0@damia.uk.clara.net... >> Word on the street is Spartan-3 lead times are generally increasing at >> the moment. We are seeing that ourselves. I believe there has been a big >> "turn on" of projects using the parts lately. Hopefully the boys and >> girls at Xilinx are ramping production to catch up. >> >> We can't help you on PQ208 but we do have some XC3S200 VQG100 I believe >> within our strategic spartan-3 stocks. It is also worth talking to the >> Memec in the UK you deal with and see if they have better lead times on >> variations of what you need i.e. speed grade, industrial grade etc. They >> don't tend to carry a lot of stock as they get burned if it does not sell >> so mostly it is a place an order an wait. Some places outside the UK >> sometimes carry stock so worth doing a search if you are desperate. >> >> I have not tried it myself but Xilinx sell XC3S200 direct of their >> website and I don't know if they have issues in them shipping to the UK. >> >> John Adair >> Enterpoint Ltd. - Home of Broaddown2. The Ultimate Spartan3 Development >> Board. >> http://www.enterpoint.co.uk >> >> >> "Fred" <Fred@nospam.com> wrote in message >> news:42a4e251$0$4095$db0fefd9@news.zen.co.uk... >>> >>> "Peter Alfke" <peter@xilinx.com> wrote in message >>> news:1118091416.990182.179050@g14g2000cwa.googlegroups.com... >>>> Frederic, >>>> We have plenty of XC3S200, but how can we halp you when you give >>>> neither your name nor your company affiliation. Being "pissed off" is >>>> no good when you give us no chance to help you. >>>> >>>> Peter Alfke, Xilinx >>>> >>> >>> Perhaps by telling that to Insight Memec in the UK rather than telling >>> them there's a 14 week lead time! Also having more than one distributor >>> in the UK may inspire some customer appreciation. >>> >> >> > >Article: 85258
I have a simple USB Devcie controller with some inputs and
outputs, no special interfacing signals are attached to it. It's a
simple USB Core running at fullspeed. My concern is how to tackle
timing issues while interfacing it with ARM core.
Article: 85259Un bel giorno Fred digiṭ: > 14 week lead time for samples for the XC3S200. Until some months ago, Xilinx was selling directly these parts (up to XC3S400 IIRC) through their online shop. Apparently this is no longer true, maybe they don't care to "push" Spartan3 anymore. > How can you prototype with that? And you haven't tried to ask for bigger models. I would like to do a prototype with a XC3S4000, and it seems that no one in the world is able to sell less than 40 or 50 pieces at a time (and of course, not before 8-10 weeks). I would have to spend 8000$ just to make the prototype, plus 2500$ for ISE Foundation (because - I don't know why - they have decided to drop the support for the biggest Spartan3 from ISE Webpack and BaseX). And this is what they call "low cost". I'm not angry, I'm just very tired of having more and more problems to get the FPGAs I need. As far as I know XC3S4000 costs around 150$ for "small" quantities, I don't think it has to be considered a high-end device. -- asdArticle: 85260
Piotr Wyderski wrote: > David Brown wrote: > > >>If you are an academic, I believe Altera have special prices and deals >>for academic use. > > > Well, I am, but I don't want to abuse it, it will be unfair. > > >>but I personally wouldn't consider using wince for anything but a >>PDA, even if it were completely free of cost. > > > Why? > > >>If you really do try to port wince to an opencores cpu, >>you are going to have a big job on your hands > > > The complexity is not a problem, I do it in my spare time. > It could take even several months, doesn't matter... > > Best regards > Piotr Wyderski > > wince licence is <$3 per device wince v3.0 or older source downloadable via MS subscriptions (inc free MS subscription). No toolset. No libraries. No drivers. No examples. No support. No source assistance and no replication permission. Ownership remains Microsoft's including your changes. WinCE is a excellent modular embedded OS, the add-ons and drivers make it freeze/crash. Sort of like embedding a Linux kernel with bad code!! That all said, I would go for a Linux RTOS. Use MicroJava for your GUI and user apps (like on a cell phone). IMHO.Article: 85261
Hi everyone, I have been trying to get a good behavioral simulation going of a Virtex2 on the ML310 board. I'm trying to simulate a standard generated chip architecture with DSOCM & ISOCM running the standard generated test-program. As far as I know there are two ways to go (with the software I have): 1) directly from XPS 2) via ProjectNavigator The problem with 1) is that the simulated chip "hangs", it does not run any program, and all the core reset signals go high, and never come down... (I provide stimuli to the pin_clk and pin_rst) The problem with 2) is that I can't even get a proper simulation to work, when I run the sim from XPN, it tells me that the components aren't bound, resulting in Undefined signals everywhere but the RST and VCC. I am new to these kind of large scale VHDL environments, so any help would be appreciated. Jim TuilmanArticle: 85262
Piotr Wyderski wrote: > Hello, > > why is there neither Windows XP Embedded nor Windows CE port > for the Nios2 processor? Does Altera plan to create such a port? > If not Nios, then which soft processor would you recommend me? > > Best regards > Piotr Wyderski > Try uC/OS-II instead.Article: 85263
Hello... Is ther any document/app-note/how-to for porting an existing nios32 assembly program to nios2 version? Especially confusing about the window register moving stuff... Having here some interrupt/thread handler which I have to move to NIOS2 version... thanx in advance rickArticle: 85264
> And this is what they call "low cost". I'm not angry, I'm just very tired > of having more and more problems to get the FPGAs I need. As far as I know > XC3S4000 costs around 150$ for "small" quantities, I don't think it has to > be considered a high-end device. Doh who told you that ? I bought like 10 of XC3S400 FT256 for <30$ piece SylvainArticle: 85265
Depends on how fast you want it and what the input order usually is. Do it in C 1st and cost it so that every read and write into data array is your memory access cost function and every compare done is your hw compare cost function. For a 2 input a,b = sort x,y a,b <= (x<y)? x,y : y,x; Arrange this into a merge sort should take 24*6*2 clocks using a DP ram. Thats around 288 clocks worst case. If no swap, you could save some clocks. If data is always sorted the time can be halved. Quicksort would be a waste of time & HW design effort here. Even bubble sorts are ok if you know the data is already mostly in order most of the time. Sort only as fast as you actually need. Since your data is also only 8bits wide the other obvious candidate is counter sorting. Fill an array of 256 counters with 0. Then scan the 48 inputs and do cntr[data[i]]++; Then scan the cntr list and for each cntr value emit that index the value no of times. This will take maybe 256 clocks to 0, 48 clocks to do the ++, then 256 clocks to scan the counts plus 48 more to emit the values. With dual port you could get around 300 clocks with out using any compares. This algorithm works very well when you have lots of data inputs with low precisions, but not so well other way around. 48 inputs is a bit low for this design. johnjakson at usa dot comArticle: 85266
Hi Fred, I would not interprete too much into the fast sale, maybe the buyer has just realized that he makes a good deal (we are happy to get rid of them...). In fact, we got our parts immediately from Memec, about 2 month ago. ( at Xilinx: I hope, we really get the Spartan 3S500E-4CPG132 at end of June, for this nice comment ;-) Regards, Thomas "Fred" <Fred@nospam.com> schrieb im Newsbeitrag news:42a56b34$0$23915$db0fefd9@news.zen.co.uk... >I think the speed of your sale suggests emphasises they're more like >rocking horse droppings. > > > "Thomas Entner" <aon.912710880@aon.at> wrote in message > news:42a566c0$0$13522$91cee783@newsreader01.highway.telekom.at... >> Sorry, they are already sold now... >> >> "Thomas Entner" <aon.912710880@aon.at> schrieb im Newsbeitrag >> news:42a556ed$0$30428$91cee783@newsreader01.highway.telekom.at... >>> We have 15pcs XC3S200-4VQ100C, date-code 0441, sealed package, never >>> opened, that we can sell. If someone is interested, just send me an >>> e-mail (we have switched the project to S3E, so we have no longer a need >>> for them...). >>> >>> Thomas Entner >>> >>> www.entner-electronics.com >>> >>>Article: 85267
Can anyone tell me which is the phase delay between input and output(CLKFX) when there is no feedback (Input frequency less than 24MHz) ThanksArticle: 85268
Hi Stephane. I wanted to sort 48 8bit unsigned numbers thanks DeepuArticle: 85269
"Joe" <joe.ricky@gmail.com> wrote in message news:1118143892.876001.308660@z14g2000cwz.googlegroups.com... > I have a simple USB Devcie controller with some inputs and > outputs, no special interfacing signals are attached to it. It's a > simple USB Core running at fullspeed. My concern is how to tackle > timing issues while interfacing it with ARM core. > Joe ... I think your missing the point. There has to be some interface (other than the external USB side) that is used to talk to the controller. A stand-alone self aware controller that thinks on its own doesn't exist. What is this simple interface? Is it a chip select with a read/write indicator? Is it synchronous .. ie does it have a clock? I would think that the actual timing would be a secondary problem that you would tackle after you have designed the interface to AMBA. Also .... if you haven't already done so ... you should read the AMBA spec. located on the ARM web site. You're not gonna get anywhere without understanding what your trying to interface to. MikeArticle: 85270
Hello, I am trying to figure out the ins and outs of the MB-GCC compiler. I am not familiar with how to place variable at specific locations in memory. I have used the #pragma directive with other compilers to nail down variables to specific locations in memory. Any help would be appreciated. I think that it may also be neccessary to create another section in memory using the linker. ie .text or .bss etc. Thanks in adavance. JeremyArticle: 85271
Sylvain Munaut wrote: > > And this is what they call "low cost". I'm not angry, I'm just very tired > > of having more and more problems to get the FPGAs I need. As far as I know > > XC3S4000 costs around 150$ for "small" quantities, I don't think it has to > > be considered a high-end device. > > Doh who told you that ? > I bought like 10 of XC3S400 FT256 for <30$ piece > > > Sylvain Count the zeroes...Article: 85272
Hi, maybe someone has had any experience on the following problem: I am searching for guidelines on measuring data lines, strobe lines, control lines between DDR SDRAM and user FPGAs (DDR SDRAM controller) on the board but unfortunately I have not found such information yet. I would like to know what I have to take into account when trying to measure with an oscilloscope the different data lines so that data integrity is not negatively affected. Are there any layout guidelines/examples/papers for adding measuring points (for example approach with coaxial connectors) to the DDR lines ? What bandwidths do you recommend for oscilloscopes when measuring phases between DQ and DQS for 133MHz reliably? Thank you for your help in advance. Rgds Andr=E9Article: 85273
Sai Sanda wrote: > Could u please suggest me the Xilinx FPGA device I/O pin with around 150mA current sink/source capability. > > what is the name of this specification in the FPGA documents. I'm pretty sure you won't find a pin on any FPGA that drives that kind of current unless you're talking short-circuit (transient) drive. Either use multiple pins (and watch your timing skew) or use an external driver.Article: 85274
"Leon Heller" <leon.heller@dsl.pipex.com> wrote in message news:8MmdnX4F-OA07TjfRVnysw@pipex.net... > "Fred" <Fred@nospam.com> wrote in message > news:42a56b34$0$23915$db0fefd9@news.zen.co.uk... >>I think the speed of your sale suggests emphasises they're more like >>rocking horse droppings. > > I bought them immediately, not because I might have trouble getting them > (I haven't checked with Memec) but because Thomas was selling them cheaper > than I can get them for, and it's less trouble than dealing with Memec. I > don't have an account with them, which always seems to cause problems. I contacted Memec and they won't have any XC3S200-4VQ100C devices for over five weeks! Moroever, they will cost me quite a lot more than Thomas wanted for his excess stock. It does look like there is a supply problem with the smaller Spartan 3 parts, as well as the larger ones. Leon
Site Home Archive Home FAQ Home How to search the Archive How to Navigate the Archive
Compare FPGA features and resources
Threads starting:
Authors:A B C D E F G H I J K L M N O P Q R S T U V W X Y Z