Search results
Results From The WOW.Com Content Network
A generate–endgenerate construct (similar to VHDL's generate–endgenerate) allows Verilog-2001 to control instance and statement instantiation through normal decision operators (case–if–else). Using generate–endgenerate, Verilog-2001 can instantiate an array of instances, with control over the connectivity of the individual instances.
A class may contain fields, methods, ports and constraints. Fields can be of type integer, real, enum, string and even complex objects. The code segment shows a unit called 'environment_u' being instantiated within the e root 'sys'. This environment_u class contains a list of 5 packet_s objects and this packet_s class contains two fields and a ...
Whereas a packed array's size must be known at compile time (from a constant or expression of constants), the dynamic array size can be initialized from another runtime variable, allowing the array to be sized and resize arbitrarily as needed. An associative array can be thought of as a binary search tree with a user-specified key type and data ...
Verilog was created to simplify the process making HDL more robust and flexible. Verilog has a C-like syntax, unlike VHDL. [34] [self-published source?] To simplify the design of complex systems in FPGAs, there exist libraries of predefined complex functions and circuits that have been tested and optimized to speed up the design process.
PLA schematic example. A programmable logic array (PLA) is a kind of programmable logic device used to implement combinational logic circuits.The PLA has a set of programmable AND gate planes, which link to a set of programmable OR gate planes, which can then be conditionally complemented to produce an output.
Value change dump (VCD) (also known less commonly as "variable change dump") is an ASCII-based format for dumpfiles generated by EDA logic simulation tools. The standard, four-value VCD format was defined along with the Verilog hardware description language by the IEEE Standard 1364-1995 in 1996.
Otherwise, the `uvm_object_registry(A,B) or `uvm_component_registry(A,B) macros can be used to map a string B to a class type A. [3] The UVM factory provides a variety of create methods that allow the user to instantiate an object with a particular instance name and of a registered type.
The Verilog Procedural Interface (VPI), originally known as PLI 2.0, is an interface primarily intended for the C programming language.It allows behavioral Verilog code to invoke C functions, and C functions to invoke standard Verilog system tasks.