constantes.vhd

--
library IEEE;
use IEEE.STD_LOGIC_1164.all;
use ieee.numeric_std.all;

package constantes is

    constant OPCODE_WIDTH : natural := 6;
    constant FUNCT_WIDTH : natural := 6;
    subtype opcode is std_logic_vector(OPCODE_WIDTH - 1 downto 0);
    subtype funct is std_logic_vector(FUNCT_WIDTH - 1 downto 0);

    constant instR : opcode := "000000";
    constant addi : opcode := "001000";
    constant andi : opcode := "001100";
    constant beqw : opcode := "000100";
    constant bnew : opcode := "000101";
    constant lui : opcode := "001111";
    constant lw : opcode := "100011";
    constant ori : opcode := "001101";
    constant slti : opcode := "001010";
    constant sw : opcode := "101011";
    constant j : opcode := "000010";
    constant jal : opcode := "000011";

    constant add : funct := "100000";
    constant andw : funct := "100100";
    constant jrw : funct := "001000";
    constant orw : funct := "100101";
    constant slt : funct := "101010";
    constant subw : funct := "100010";
end package constantes;