Best way to learn VHDL? - Stack Overflow
2013年6月2日 · Download GHDL (VHDL compiler/simulator using GCC technology) or a little more friendly software tool boot. Learn how to build a VHDL program with GHDL. Try to compile simple "Hello, world!". Learn VHDL syntax with the open-source book Free Range VHDL. It …
Can anyone recommend a good resource for learning VHDL?
2013年2月8日 · The newsgroup comp.lang.vhdl is inhabited by people who are very knowledgeable about modern VHDL and can give you sane advice if you can ask questions well. To be able to do the latter, read the book mentioned above. Wading through numerous VHDL forums is in general a waste of time, as the information content there is …
simulate a function with vhdl code by ISE - Stack Overflow
2013年2月18日 · VHDL is not a programming language, it's a hardware description language. For this reason, it's important to use std_logic_vectors, unsigneds and other primitives that are native to the hardware in order to get reliable results and to optimize the final design a much as possible.
How can I do b * 2^a in vhdl? - Stack Overflow
2021年11月19日 · I started to learn vhdl last weeks. And I don't understand writing code of B * 2^A. In this case, B being a 2's complement integer of 3-bit signal, and A being a 2-bit signal representing an unsigned binary integer, the result of this multiplication will be a 6-bit signal represented in 2's complement.
hardware - process statement in vhdl - Stack Overflow
2014年5月14日 · I am trying to learn VHDL and struggling with some of its basics. The question is as follows: Process statement is described to contain code that runs sequentially (one line after the other). I want to ask why can't one run concurrent code in a process statement (means all lines execute in parallel).
counter - VHDL 500 ns pulse - Stack Overflow
I'm a analogue engineer trying to learn VHDL for a project i have. the project is to count the rising edge of a input signal and prescale the counts to a smaller number. for example if there are 8 counts on the input then 1 count will be outputted. the prescale value can be user changed. i have managed to work the prescale part out but at ...
vhdl - Assign signal in many processes - Stack Overflow
2019年1月20日 · I try to learn VHDL language I don't understand a strange thing. This thing refers to the signals from an architecture. My question is: Why we can't assign bit signal, integer signal, etc in more than one process/ concurrent assign. But I saw, we can assign in more than one process Std_logic_vector signal and Std_logic signal.
Instantiation of RAM in FPGAs using VHDL - Stack Overflow
2015年8月5日 · In the 2002 revision of the VHDL standard shared variables have to be a protected type accessed through subprograms declared in the same declarative region that have the shared variable visible. There's likely a Modelsim flag to set compatibility to an older version of the standard (e.g. 1993)
VHDL clock divider flips between 0 and X every clk cycle
I'm starting out trying to learn VHDL after doing a little bit of Verilog. This is my attempt at creating a clock divider: (largely taken from Making a clock divider) library IEEE; use IEEE.
fpga - What is wrong with the array constant declaration in my …
2024年5月14日 · I am a digital technology student trying to learn VHDL. I wrote this testbench code for 4 bit bcd adder to 7 segment display. I have tried all the possibilities i and chat GPT could think of but the compiler still gave me the same error