process call happening more than once

[pinaki]

I have a process like below.

alu: process (ain, bin, sel, cinflag)
begin
...
end process alu;

Inside this process, it is modifying another signal cout based on the values of the parameters. Basically, cout <= ain (op) bin. When the signals ain and cout are identical, this ends up invoking the process again (since the value of ain in the sensitivity list changes). How can I prevent this from happening?

Thanks in advance.

 

[adithyay]

As you know, the process loop that you have written gets triggered when any one of the 4 parameters in the sensitivity list change at any point of time.

The assignment statement 'cout <= ain (op) bin' doesnot affect ur process sensitivity list parameters and more over 'cout' being equal to 'ain' in 'cout <= ain (op) bin' has nothing to do with ur process being triggered again.

The reason why your process might be getting triggered again must be a feedback statement to ain or bin, or an external statement causing an unwanted change in state of any one of the 4 parameters in the sensitivity list.