HCT::lang::hdl::vhdl.3pm

Langue: en

Version: 2010-06-27 (fedora - 01/12/10)

Section: 3 (Bibliothèques de fonctions)

NAME

HCT::lang::hdl::vhdl - Class of VHDL language.

DESCRIPTION

VHDL (VHSIC (Very High Speed Integrated Circuits) hardware description language) is commonly used as a design-entry language for field-programmable gate arrays and application-specific integrated circuits in electronic design automation of digital circuits.

DESIGN

VHDL is a fairly general-purpose language, and it doesn't require a simulator on which to run the code. There are a lot of VHDL compilers, which build executable binaries. It can read and write files on the host computer, so a VHDL program can be written that generates another VHDL program to be incorporated in the design being developed. Because of this general-purpose nature, it is possible to use VHDL to write a testbench that verifies the functionality of the design using files on the host computer to define stimuli, interacts with the user, and compares results with those expected. VHDL is a strongly typed language.