library ieee;  use ieee.numeric_bit.all;

use work.dlx_types.all,
    work.dlx_instr.all,
    work.alu_types.all;

entity controller is
  generic ( Tpd_clk_ctrl, Tpd_clk_const : delay_length;
            debug : dlx_debug_control := none );
  port ( clk : in bit;
         reset : in bit;
         halt : out bit;
         width : out dlx_mem_width;
         write_enable : out bit;
         mem_enable : out bit;
         ifetch : out bit;
         ready : in bit;
         alu_function : out alu_func;
         alu_zero, alu_negative, alu_overflow : in bit;
         reg_s1_addr, reg_s2_addr, reg_dest_addr : out dlx_reg_addr;
         reg_write : out bit;
         c_enable : out bit;
         a_enable, a_out_en : out bit;
         b_enable, b_out_en : out bit;
         temp_enable, temp_out_en1, temp_out_en2 : out bit;
         pc_enable, pc_out_en1, pc_out_en2 : out bit;
         mar_enable, mar_out_en1, mar_out_en2 : out bit;
         mem_addr_mux_sel : out bit;
         mdr_enable, mdr_out_en1, mdr_out_en2, mdr_out_en3 : out bit;
         mdr_mux_sel : out bit;
         ir_enable : out bit;
         ir_immed1_size_26, ir_immed2_size_26 : out bit;
         ir_immed1_unsigned, ir_immed2_unsigned : out bit;
         ir_immed1_en, ir_immed2_en : out bit;
         current_instruction : in dlx_word;
         mem_addr : in unsigned(1 downto 0);
         const2 : out dlx_bus_word );
end entity controller;