Top "Vhdl" questions

VHDL (VHSIC Hardware Description Language) is a language used in electronic design to describe digital systems such as FPGA (field-programmable gate arrays) and IC (integrated circuits).

What is the purpose of the `std_logic` enumerated type in VHDL?

What is the purpose of the std_logic enumerated type? 'U': uninitialized. This signal hasn't been set yet. 'X': unknown. …

vhdl digital
How do I make Quartus II compile faster

I'm using Altera Quartus 2 to do a custom 8 bit processor and it takes forever to compile on my laptop. I'm …

vhdl quartus
"component instance "uut" is not bound" when simulating test bench with GHDL simulator

I am having a problem with using GHDL (http://ghdl.readthedocs.io/en/latest/) to simulate my VHDL design. So, …

vhdl fpga hdl ghdl
Program for drawing VHDL block diagrams?

Is there any free program out there that can parse a collection of VHDL files and build a block diagram …

diagram vhdl
How to write an integer to stdout as hexadecimal in VHDL?

I can print an integer as decimal to stdout with: library std; use std.textio.all; entity min is end …

vhdl ghdl
Reset modelsim editor to the default one

I want to reset my editor to the default one in Modelsim but I don't know how. When I double …

editor vhdl modelsim
VHDL: How to check selected bits of a vector

I'm wondering if there is a way to check only the bits I'm interested in of an std logic vector …

vhdl boolean-logic bitvector
VGA controller with VHDL

I'm trying to learn VHDL programming with some books and an Altera DE1 development kit from Terasic. The issue here …

vhdl fpga vga
Is integer overflow defined in VHDL?

I was wondering if integer overflow is defined in VHDL. I wasn't able to find anything in the 2002 Specification. As …

vhdl
How can I read binary data in VHDL/modelsim whithout using special binary formats

Some background: I am writing a VHDL test bench for a ethernet MAC. The testbench consists of a package and …

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