Verilog is mainly used for describing digital circuit designs, but not all description styles can be synthesized into actual hardware circuits. For example, some keywords used for simulation and verification belong to the simulation and verification language...
This tutorial frequently mentions the term "synthesis." In other words, some logic cannot be synthesized into actual circuits, or some logic designs may have certain safety hazards in the circuits after synthesis. This chapter briefly introduces the logic...
To preserve the original flavor of the subroutines and avoid poor translation quality, all subroutine lists retain their English descriptions. Not all subroutines have been verified here, due to version or transcription issues...
Functional Features The main functions completed by the ACC subroutine are: - Reading information related to specific objects from the internal data structure - Writing information related to specific objects into the internal data structure ACC subroutine...
To preserve the original flavor of the subroutines and avoid poor translation quality, all subroutine lists retain their English descriptions. It is recommended to carefully study the corresponding type of subroutines when using them. Also, not all subroutines have been...
Functional Characteristics TF (task/function) subroutines are mainly used for data transmission in both directions across the boundary between Verilog and user C programs. TF subroutines always have the prefix tf_ and are defined in the header file...
When performing digital design, special situations are often encountered. The tasks and functions in Verilog can no longer meet simulation requirements, so it is necessary to define custom system tasks and functions. Programming Language Interface (PLI, P...
Simulation Control: $finish, $stop System task call format task description exit simulation $finish( type ) ; ends simulation. The parameter type can choose whether to print information when exiting simulation. type=0: ...
Keywords: fixed-point number, floating-point number, $realtobits, $bitstoreal This section mainly introduces the functions for converting between real numbers and integers: $realtobits, $bitstoreal, and also explains real ...
Random Numbers In Verilog, the system task $random(seed) is used to generate random numbers, where seed is the random number seed. Different seed values produce different random numbers. If the seed is the same, the generated...