What are the round braces doing in this code in Verilog?
rx_wb_valid <= (wb_memaddr <= { rx_len[(10+1):2] });
rx_wb_valid
is a 1-bit register
wb_memaddr
is a 10-bit register
rx_len
is a 12-bit register
The parentheses, ()
, are optional in your line of code. Your code should behave the same without them. However, I think they make your code more readable since they clearly separate the left <=
operator (nonblocking assignment) from the right <=
operator (comparison).
The curly braces, {}
, are also optional there. I think it is better to remove them in this case.