Verilog question - "(!resetn)" , "(~resetn)&q

[SweetMusic]

Verilog question

Hello
I have one stoopid question: in verilog "(!resetn)" means the same thing with "(~resetn)" ?
and one more: reg[3] <= ~|d , where d in a 8 bits register ?
thank you

 

[cherukukeshav]

Re: Verilog question

There is a difference in using ! and ~... let us take an example,like

when we want to check the condition like

-- if!(a==b) here we are validating the condition with true or false.


-- ~(a) will invert the bits of a . here a is a vector.

hope this is clear


- Keshav