DIY etched boards are the quickest way to get a project up and running. This is just what Noy did with his IR Toy, and CPLD breakout boards. He modified our projects to a single layer design. Used the toner-transfer … Read more
XC9572XL CPLD development board v1b are back in stock at Seeed Studio. CPLDs are programmable logic gate arrays which allow you to build custom logic devices simply by programing them. Get the XC9572XL dev-board for $15 and CoolRunner-II development board … Read more
DJ Delorie was looking for an excuse to learn about Verilog and CPLDs. So he coded up this binary to 7-segment display converter. He provides links to the source code and says this project fits into the Xilinx XC9572 (the … Read more
Here’s a site we found containing open source simulation models for system level verification of CPLD/FPGA devices. “Founded in 1995, Free Model Foundry (FMF) is dedicated to promoting standard modeling practices within the electrical engineering comunity. In particular, we support … Read more
CoolRunner-II XC2C64A CPLD development boards are back in stock at Seeed Studio. CPLDs are programmable logic gate arrays which allow you to build custom logic devices simply by programing them. Get the CoolRunner-II development board for $15 and XC9572XL dev-board … Read more
Xilinx has released Issue 78 of Xcell Journal, their free online publication for embedded system and programmable logic developers. Each issue of Xcell has articles targeted at developers from every skill level, from beginner to expert. You can check out … Read more
Numanto Lab ported one of our CPLD breakout boards from the original Eagle files to the open source KiCad. CPLD breakout board design in KiCad based on design by Ian Lesnet of Dangerous Prototypes. This board is completely designed in … Read more
Xilinx has announced the availability of Version 13.4 of their ISE Design Suite. This download includes the free Webpack version of the ISE and is available for Windows and Linux. This release introduces their new MicroBlaze Micro Controller System (MCS), … Read more
Hamster has written VHDL code for interpreting data from a PS2 keyboard. It’s currently a work in progress and is designed to work with his Papilio S6 (the Spartan 6-based Papilio board paired with the Megawing board, both available from … Read more
CoolRunner-II XC2C64A CPLD development boards are back in stock at Seeed Studio. Get the CoolRunner-II development board for $15 and XC9572XL dev-board for $15.
Advanced Logic Synthesis for Electronics (ALSE) is a Paris based company providing product development, IP consulting and training courses involving HDL, ASIC and FGPA devices. They are making available a series of IP cores free for personal, non-commercial use. They … Read more
NBitWonder writes: Over at NBitWonder, we have been working to develop a software-defined radio for a few months. Last weekend, the radio received its very first signals. There is a short writeup and demonstration video at our website. This is … Read more
After Jason shared his design of a XC95144XL breakout board, we made our own breakout for the same chip. It features a single row of 39 pins that can be interfaced with a standard bread board. All the remaining pins … Read more
Arhi tipped us to this starter kit for CoolRunner-II CPLDs: I can highly recommend CoolRunner-II CPLD Starter Kit. I have this small board for a while and it’s more then you need to learn to use cpld’s and it’s fairly … Read more
Xilinx has announced the availability of Version 13.3 of their ISE Design Suite. This download includes the free Webpack version of the ISE and is available for Windows and Linux. This is the software package used to develop for our … Read more
Jason implemented a frequency counter on an XC9572XL CPLD. It uses a 1Mhz clock to count the duration of the input signal pulse, and shows the output on a 6 digit display. Initially he had to use additional 7400 logic … Read more
Openschemes has a tutorial describing their project for bit bang JTAG programming of Xilinx CPLDs using their homebrew SVF player. They describe: Today’s lesson consists of the development of a bit-banged JTAG SVF player in order to program a device … Read more
Ulrich Radig from Germany has developed an 8-bit graphics card based on the XC9572 CPLD. In addition to the CPLD chip (the same one used in our CPLD dev board), he added two cache blocks from an old motherboard. (He … Read more
While working on his CoolRunner-II 50Mhz counter project jbaele found a bug. The reset line was showing a serious glitch when the stop signal was sent to the counter. The glitch was found to be the result of having the … Read more
CoolRunner-II XC2C64A CPLD development boards are back in stock at Seeed Studio. Get the CoolRunner-II development board for $15 and XC9572XL dev-board for $15.
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