The main thing it is missing is delays (it does have non-synthesizable constructs like $display). However, if you're developing a processor, most of your testi

The main thing it is missing is delays (it does have non-synthesizable constructs like $display). However, if you're developing a processor, most of your testing is executing programs. For that, you don't need a complex testbench: just load the executable code into your memory and toggle the clock.