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Array
Definition An array is a special variable that can store more than one value of the same data typ...
Example
Procedure library IEEE; use IEEE.STD_LOGIC_1164.ALL; entity Adder is port ( A, B: in...
Procedure, Function, and Impure Function Synthesis
In VHDL, both "functions" and "procedures" can be used in the description of hardware. However, i...
Procedure and Function
Procedure in VHDL In VHDL, a "procedure" is a language construct used to group multiple statement...
Loop Control: Next & Exit Statements
The following are two additional statements that can be used to control the looping construct: Ne...
While Loop and For Loop
What is looping in VHDL? A looping construct (looping statement) in VHDL is an instruction that a...
Array and Types in VHDL
Array In VHDL, an array is a collection of elements that have the same data type. You can think o...
VHDL Modularity
We will build a 4-bit Ripple Carry Adder using 4 Full Adders in Structural Style Programming. Eac...
Structural Style, Port Mapping, and Generic Map
Structural Style Programming Structural Style Programming in VHDL allows designers to build digit...
File Operations
Read and Write File In VHDL, you can read and write files using the textio package. The textio pa...
Testbench, Assert, and Report
Testbench in Combinational Circuit To use a testbench in a combinational circuit, you need to fol...
Intro, Types, and Port Mapping
Introduction In VHDL, a testbench is a module that instantiates the unit under test (UUT) and app...