_primary.vhd

viterbi decoder , use verilog HDL language.

library verilog;
use verilog.vl_types.all;
entity chip_core is
    port(
        sync_s1         : in     vl_logic;
        self_test_s1    : in     vl_logic;
        external_y_s1   : in     vl_logic_vector(1 downto 0);
        orig_del_bit_s1 : out    vl_logic;
        fail_s1         : out    vl_logic;
        data_valid_s1   : out    vl_logic;
        decoded_bit_s1  : out    vl_logic;
        decoded_column_s1: out    vl_logic_vector(3 downto 0);
        decisions_s1    : out    vl_logic_vector(3 downto 0);
        path_metrics_s1 : out    vl_logic_vector(15 downto 0);
        phi1            : in     vl_logic;
        phi2            : in     vl_logic
    );
end chip_core;