Why differences between Merly-type and Moore-type clock-gated state machines are important on how to stop clocking? I need help to understand a...

Why differences between Merly-type and Moore-type clock-gated state machines are important on how to stop clocking? I need help to understand a puzzle: Merly-type state machine generates outputs which depend on inputs to the state machine and the current states of the state machine, while Moore-type state machine generates outputs which depend only on the current states of the state machine....

FPGAs are used in a wide variety of applications from automotive to computing and space. Why are they not used inside optical modules?

FPGAs are used in a wide variety of applications from automotive to computing and space. Why are they not used inside optical modules?

Dear all, What are the smartest way to make a solo FPGA project capable of field updates? I'm very new in the FPGA world so I don't much...

Dear all, What are the smartest way to make a solo FPGA project capable of field updates? I'm very new in the FPGA world so I don't much about the practical use of them. Normally when I uses microcontrollers I make them updateble via USB, serial or SD cards. What techniques are possible when I want to avoid having a uP in the project. My target is a Xilinx Spartan 3A or 3AN Reg...

I've tried to figure out how to use the Xilinx DSP48s for Galois arithmetic, but they really aren't that useful for that. The new ones can do a...

I've tried to figure out how to use the Xilinx DSP48s for Galois arithmetic, but they really aren't that useful for that. The new ones can do a 96-bit unary XOR, which can be used for GF(2) matrix multiplication, but the multipliers themselves aren't of much use for Galois math. I wondered what unusual uses (besides FIR filters or integer matrix multipliers) people have used these

I have a question on how big companies like Intel/AMD use VHDL and Verilog internally for their processors. For example, if they implement an...

I have a question on how big companies like Intel/AMD use VHDL and Verilog internally for their processors. For example, if they implement an ALU. Do they implement the ALU on an RTL-level or do they instantiate hand-optimized components (adder, barrel shifter, multiplier). Basically, does the synthesizer actually do something or does it only connect hand-optimized components? Regards ...

There is a 64bit input that is stored in register. A single clock cycle can read 32bits at a time. For implementing this 4x1 mux is used as 32bit...

There is a 64bit input that is stored in register. A single clock cycle can read 32bits at a time. For implementing this 4x1 mux is used as 32bit image is divided into 8bit. The problem I'm facing is I don't know how to read a single reg in 2 clock cycles i.e. 32bit in one cycle and remaining 32bit in second cycle. I'll be grateful if you can help me out with it. Thankyou.

Assume I'm a pointy-haired boss trying to help one of my guys. I think that... The Xilinx ZYNQ (FPGA+ARM on a chip) has a hard boot...

Assume I'm a pointy-haired boss trying to help one of my guys. I think that... The Xilinx ZYNQ (FPGA+ARM on a chip) has a hard boot loader. It figures out what the boot device is (serial flash, SD card, whatever) and reads in a secondary boot program, which the Xilinx tools provide as part of a build. That loader then reads the entire FPGA config bitstream into DRAM, and sets up a gi...

Hi, I needed to access the Microchip 11AA02E48 EEPROM located on a FPGA board. Unfortunately, I couldn't find any VHDL/Verilog sources of a...

Hi, I needed to access the Microchip 11AA02E48 EEPROM located on a FPGA board. Unfortunately, I couldn't find any VHDL/Verilog sources of a UNI/O controller. Therefore, I have decided to write my own. It took a few hours, but it seems that it works quite reasonably. I have published sources under PUBLIC DOMAIN od CC0 1.0 Universal license at https://groups.google.com/forum/#!to

Hello folks, I try to use an old FPGA card from Nallatech, it is a BenNuey PCI card. I have the FUSE software, but I am missing the CD for...

Hello folks, I try to use an old FPGA card from Nallatech, it is a BenNuey PCI card. I have the FUSE software, but I am missing the CD for the DIME card named BenBlue-II and Nallatech, unfortunately, is not offering support. Does anyone know how to find this piece vintage software? Best regards, T.

We have a product that includes a small parallel OTP memory. These devices get very hard to get and no easy alternative is available that fits in...

We have a product that includes a small parallel OTP memory. These devices get very hard to get and no easy alternative is available that fits in the very small available space. A PLCC32 EPROM will not fit unfortunately. Since the memory array is small (256x4 bits), I was thinking this could easily fit into a CPLD or FPGA. But how to program this? The memory is used for calibration data. So...