Simple explaination I hope

Gotcha.

OK, another question leading on from this then if I may:

As you can see, the above process is processed upon a change to usg_counter

Now say I combined the activity of slv into the clocked process that deals with updating the counter, i.e. something like this:

  proc_Counters : PROCESS(IN_CLK, IN_RESETn)
  BEGIN
    IF IN_RESETn = '0' THEN
      usg_Counter <= (OTHERS => '0');
      slv <= '0';
        
    ELSIF RISING_EDGE(IN_CLK) THEN
      IF usg_Counter = b"0010_1111" THEN
        usg_Counter <= (OTHERS => '0');
      ELSE
        usg_Counter <= usg_Counter + 1;
      END IF;
        
      --Put it here instead...
      IF usg_Counter = b"0010_0110" THEN
        slv <= '1';
      ELSE
        slv <= '0';
      END IF;
        
    END IF;
  END PROCESS proc_Counters;

Would that do the same thing?

Andy