Iam trying to interface the ADA board with my cyclone 3 starter kit. I want to view my led output on the oscilloscope. So i have identified the HSMC connections . I can track the signals on my ADA board at the D/A chip pins using my multimeter but the chip output IOUT A does not show any variation. It is stable at a particular voltage. this is my code entity: and its corresponding assignments: Clk : in std_logic; --led_cathode : out std_logic; --hsmclk_ou std_logic; --da_mode,da_wrta,da_da7ut std_logic; DAC_MODEut std_logic; DAC_CLK_A,DAC_CLK_But std_logic; DAC_WRT_A,DAC_WRT_But std_logic; ouut std_logic; k: out std_logic_vector(1 to 4); OSC_SMA_ADC4:in std_logic ; SMA_DAC4:in std_logic ; poweron: out std_logic architecture ar of testing is constant max_count : natural := 40; constant m_count : natural := 50000000 ; signal Rst_n : std_logic; signal q:std_logic_vector(1 to 4):="0001"; signal led_anode:std_logic; signal clk_1,clk_2:std_logic:='0'; begin -- my dac configurations, now ill show u the pin assignments DAC_CLK_A <=clk_2; DAC_CLK_B<=clk_2; DAC_MODE<='1';-- dual mode DAC_WRT_A<=clk_1; DAC_WRT_B<=clk_1; poweron<='0'; Thanks in advance!