title: Execution order of initial and always blocks in Verilog
body: <p>I'm new to Verilog programming and would like to know how the Verilog program is executed. Does all initial and always block execution begin at time t = 0, or does initial block execution begin at time t = 0 and all always blocks begin after initial block execution? I examined the Verilog program's abstract syntax tree, and all initial and always blocks begin at the same hierarchical level. Thank you very much.</p>