What is Verilog syntax?
Lexical conventions in Verilog are similar to C in the sense that it contains a stream of tokens. A lexical token may consist of one or more characters and tokens can be comments, keywords, numbers, strings or white space. All lines should be terminated by a semi-colon ; .
What are the basic syntax used in operators in Verilog?
Operators
| Verilog Operator | Name | Functional Group |
|---|---|---|
| * / % | multiply divide modulus | arithmetic arithmetic arithmetic |
| + – | binary plus binary minus | arithmetic arithmetic |
| << >> | shift left shift right | shift shift |
| > >= < <= | greater than greater than or equal to less than less than or equal to | relational relational relational relational |
What is the correct syntax of an assignment in Verilog?
The assignment syntax starts with the keyword assign, followed by the signal name, which can be either a signal or a combination of different signal nets. The drive strength and delay are optional and mostly used for dataflow modeling than synthesizing into real hardware.
What is the correct syntax for writing numbers in Verilog?
Verilog Number Format. The consist of an apostrophe ( ‘ ) followed by b (binary, base-2), d (decimal, base-10), o (octal, base-8) or h (hexadecimal, base-16) for integer numbers.
What is signal in Verilog?
A Verilog signal may either be a simple net or else a bus. When an identifier is introduced (using a declaration such as input or tri etc.), if it is given a range, then it is a bus, otherwise it is a simple net. Local signal names are introduced with the wire, reg and tri statements.
What is RTL in Verilog?
RTL is an acronym for register transfer level. This implies that your Verilog code describes how data is transformed as it is passed from register to register. The transforming of the data is performed by the combinational logic that exists between the registers.
What does == mean in Verilog?
In Verilog: == tests logical equality (tests for 1 and 0, all other will result in x) === tests 4-state logical equality (tests for 1, 0, z and x)
What is $finish in Verilog?
$finish is a Verilog system task that tells the simulator to terminate the current simulation. If the last block had a delay of 30 time units like shown below, the simulation would have ended at 30 time units thereby killing all the other initial blocks that are active at that time.
What does 1 mean in Verilog?
‘z is equivalent to Verilog-2001 ‘bz. ‘1 is equivalent to making an assignment of all 1’s. ‘0 is equivalent to making an assignment of 0.
What does Z mean in Verilog?
high-impedance
The SystemVerilog value set consists of the following four basic values: 0—represents a logic zero or a false condition 1—represents a logic one or a true condition x—represents an unknown logic value z—represents a high-impedance state The values 0 and 1 are logical complements of one another.
What is wire syntax in Verilog?
wire elements are simple wires (or busses of arbitrary width) in Verilog designs. The following are syntax. rules when using wires: 1. wire elements are used to connect input and output ports of a module instantiation together with some other element in your design.