suresh When it comes to SystemVerilog, understanding the difference between `always @(*)` and `always_comb` is crucial. The `always @(*)` keyword is used to infer sensitivity to all signals that are in the sensitivity list within the block. This means that whenever any of the signals in the sensitivity list changes, the block of code will be executed.
On the other hand, the `always_comb` keyword in SystemVerilog is specifically used to infer combinational logic. This implies that the code block will execute only when there is a change in the signal(s) within the block. The `always_comb` keyword helps in synthesizing better logic for combinatorial circuits, as it represents that the output only depends on the present input.
In summary, while `always @(*)` is more general and responds to any change in the sensitivity list, `always_comb` is more specific to combinational logic and executes only when there is a change in the signal(s) within the block.
Understanding these distinctions can enhance your SystemVerilog coding practices and assist in optimizing the design for efficiency and performance.
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