Types and objects declared in a VHDL description can have additional information, called attributes, associated with them. There are a number of standard pre-defined attributes. An attribute is referenced using the ''' notation. Forexample,
thing'attr
refers to the attribute attr of the type or object thing.
When implementing a state machine in VHDL, the state variables need to be listed in the port list of the ENTITY section. If not, VHDL considers them as buried nodes and disables the output pins. This means there is no way of using test equipment to look at the machine state.
The diagonals of a square are perpendicular whereas the diagonals of a rectangle are not perpendicular.
W
A parallelogram with a right angle is a rectangle.
When a designer encounters a multivalued attribute, they can either create a separate table to represent the multivalued data, establishing a one-to-many relationship with the original entity, or they can choose to combine the values into a single string or list within the original attribute, though this may complicate data retrieval and integrity. The first option is generally preferred as it maintains normalization and improves data management.
A virtual calculator can be implemented using VHDL. We call it VHDL calculator.
vhdl code for binary to Hexadecimal ?
VHDL is a text based programming language.
VHDL provides conversion functions and resolution functions.
vhdl code for ascending order of numbers
"&" operator is not synthesized by VHDL synthesis tool.
A function is a subprogram written in VHDL. This program can be called and used in other programs.
VHDL is a hardware description language. It describes the functionality of a hardware as a program. If we know the architecture of 8085, the same can be implemented or coded using VHDL.
In 2008, Accellera released VHDL 4.0 to the IEEE for balloting for inclusion in IEEE 1076-2008. The VHDL standard IEEE 1076-2008 was published in January 2009. Currently, IEEE 1076-2008 is the latest version of VHDL.
There are 4 main differences between C programming and VHDL programming. C is a mid-level language, while VHDL is a hardware description language. C can handle one type of instruction, while VHDL can handle two. C does not require as much resource usage as VHDL. C can be written only with logical thinking, but a VHDL programmer must understand hardware circuits.
VHDL is a hardware description language. You can describe the hardware in three different ways using VHDL. 1. dataflow model 2. behavioral model 3. structural model
implement vhdl code for counter.output of counter pulse is a square wave