What is initial statement in Verilog?

An initial block is started at the beginning of a simulation at time 0 unit. This block will be executed only once during the entire simulation. Execution of an initial block finishes once all the statements within the block are executed.

Why is initial not synthesizable?

Initial block is not synthesizable, this is because initial block runs only once in the simulation. In real hardware, there is no such concept as running only once. Hence, they are not synthesizable in ASICs which is a real hardware.

Is * synthesizable in Verilog?

System Verilog is a HDL and it is synthesizable.

What is the meaning of synthesizable in Verilog?

When you write you Verilog or VHDL code, you are writing code that will be translated into gates, registers, RAMs, etc. The program that performs this task is known as a Synthesis Tool. It is the job of the Synthesis Tool to take your Verilog or VHDL code and turn it into something that the FPGA can understand.

What does initial statement mean?

It is a point of reference for you to return to from time to time during your programme, so you should write it as soon as possible, before your experiences of University life have started to influence you. The Initial Statement need not be long just a few sentences or a short paragraph.

Why do we use initial in Verilog?

The always block indicates a free-running process, but the initial block indicates a process executes exactly once. Both constructs begin execution at simulator time 0, and both execute until the end of the block. Initial blocks can be used in either synthesizable or non-synthesizable blocks.

Can initial block be synthesized?

However, initial blocks cannot be synthesized in ASICs or CPLDs. Initial and always block describe independent processes, which means the statements in one process execute autonomously. Both types of processes consist of procedural statements, and both start immediately as the simulator is started.

Is $Readmemh synthesizable?

$readmemh is not synthesizeable. It is used for simulation or behavioural code only.