A fairly basic question relating to Modelsim. I need to preset a counter during a simulation. "Force" maintains the counter at a fixed value - I need it to continue counting but from a pre-selected value. Thanks in anticipation. Alan Brown

Hi Alan,

I just tried it out and it works fine for me (Modelsim DE 2019.2). I have a simple counter in VHDL defined as:

    signal count_s         : std_logic_vector(7 downto 0);
    process (reset, clk)
    begin
        if reset='1' then
             count_s  <= (others => '0');
        elsif rising_edge(clk) then
             count_s + '1';
        end if ;
    end process;

During simulation I can force it to any value and it continues from the forced value:

force -deposit test_tb/u1/count_s 36

Is your counter a variable? In that case you need to use the change command.

Regards,

Hans.