Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

I need help with simulation by ModelSim

Hello As written in title, I am trying to do RTL simulation using ModelSim and stuck with it. I'm a newbie to ModelSim and this question may seem stupid, but please help me (I looked for a lo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

The simulator does not know what you want for the initial value for Q. Supply an initial value for the signal, eg., 


    -- Difining signal(s)
    signal Q    :    std_logic_vector(25 downto 0) := (others => '0');

and it will work fine.

An alternative method is to add a reset input and then add reset logic to the counter process.

Cheers,

Dave