The syntax for always statement is: always To implement this, we’ll be using always statement. Well, if you’d look at the output of full adder, you’ll notice that the output changes whenever the input variable changes there is no don’t care value in the input. One is an initial statement which is executed only once and the other is always statement which gets executed once the sensitivity list gets enabled. The behavioral style mainly has two prominent statements. These keywords are defined in Verilog IEEE 1134 standard. The end of a module is followed by endmodule keyword.Then comes the procedural statements these statements are the assignment statements and are used to express the logical formulae.The port list contains the input, output and inout variables.It shows the input and output ports to a block. Now module in Verilog is just like the function concept in C. A module, being the functional block, describes a particular block in the digital system. The first and foremost task in Verilog coding is the declaration of the module.The construct of Verilog behavioral modeling consists of three main parts:
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