_primary.vhd

RISC状态机由三个功能单元构成：处理器、控制器和存储器。 RISC状态机经优化可实现高效的流水线操作。 RISC 中的数据线为16位。 在数据存储器中的0到15的位置放置16个随机数

library verilog;
use verilog.vl_types.all;
entity Processing_Unit is
    generic(
        word_size       : integer := 16;
        op_size         : integer := 12;
        Sel1_size       : integer := 3;
        Sel2_size       : integer := 2
    );
    port(
        instruction     : out    vl_logic_vector;
        Zflag           : out    vl_logic;
        address         : out    vl_logic_vector;
        Bus_1           : out    vl_logic_vector;
        mem_word        : in     vl_logic_vector;
        Load_R0         : in     vl_logic;
        Load_R1         : in     vl_logic;
        Load_R2         : in     vl_logic;
        Load_R3         : in     vl_logic;
        Load_PC         : in     vl_logic;
        Inc_PC          : in     vl_logic;
        Sel_Bus_1_Mux   : in     vl_logic_vector;
        Load_IR         : in     vl_logic;
        Load_Add_R      : in     vl_logic;
        Load_Reg_Y      : in     vl_logic;
        Load_Reg_Z      : in     vl_logic;
        Sel_Bus_2_Mux   : in     vl_logic_vector;
        clk             : in     vl_logic;
        rst             : in     vl_logic
    );
end Processing_Unit;