cpu_test_bench.vhd

nois 2cpu 硬件实现编程

  W_op_rdctl <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000100110"))));
  W_op_cmpltu <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000110000"))));
  W_op_callr <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000011101"))));
  W_op_cmpge <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000001000"))));
  W_op_rsvx47 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000101111"))));
  W_op_and <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000001110"))));
  W_op_rsvx00 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000000000"))));
  W_op_rsvx56 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000111000"))));
  W_op_hbreak <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000110101"))));
  W_op_flushp <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000000100"))));
  W_op_nor <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000000110"))));
  W_op_rsvx50 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000110010"))));
  W_op_initi <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000101001"))));
  W_op_srai <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000111010"))));
  W_op_sync <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000110110"))));
  W_op_rsvx15 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000001111"))));
  W_op_rsvx55 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000110111"))));
  W_op_crst <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000111110"))));
  W_op_rsvx42 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000101010"))));
  W_op_xor <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000011110"))));
  W_op_rsvx34 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000100010"))));
  W_op_mulxss <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000011111"))));
  W_op_rsvx51 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000110011"))));
  W_op_rsvx10 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000001010"))));
  W_op_eret <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000000001"))));
  W_op_rsvx25 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000011001"))));
  W_op_jmp <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000001101"))));
  W_op_or <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000010110"))));
  W_op_rsvx35 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000100011"))));
  W_op_sra <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000111011"))));
  W_op_rsvx20 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000010100"))));
  W_op_slli <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000010010"))));
  W_op_mulxsu <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000010111"))));
  W_op_rsvx21 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000010101"))));
  W_op_ror <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000001011"))));
  W_op_srli <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000011010"))));
  W_op_sll <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000010011"))));
  W_op_div <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000100101"))));
  W_op_cmplt <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000010000"))));
  W_op_add <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000110001"))));
  W_op_rsvx44 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000101100"))));
  W_op_bret <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000001001"))));
  W_op_rsvx60 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000111100"))));
  W_op_rsvx63 <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000111111"))));
  W_op_mul <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000100111"))));
  W_op_cmpgeu <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000101000"))));
  W_op_cmpne <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000011000"))));
  W_op_cmpeq <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000100000"))));
  W_op_ret <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000000101"))));
  W_op_rol <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000000011"))));
  W_op_sub <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000111001"))));
  W_op_nextpc <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000011100"))));
  W_op_divu <= W_op_opx AND to_std_logic((((std_logic_vector'("00000000000000000000000000") & (W_iw_opx(5 DOWNTO 0))) = std_logic_vector'("00000000000000000000000000100100"))));
  --vhdl renameroo for output signals
  M_wr_data_filtered <= internal_M_wr_data_filtered;
--synthesis translate_off
    --Clearing 'X' data bits
    M_wr_data_unfiltered_0_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(0))), '1','0');
    internal_M_wr_data_filtered(0) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_0_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(0));
    M_wr_data_unfiltered_1_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(1))), '1','0');
    internal_M_wr_data_filtered(1) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_1_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(1));
    M_wr_data_unfiltered_2_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(2))), '1','0');
    internal_M_wr_data_filtered(2) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_2_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(2));
    M_wr_data_unfiltered_3_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(3))), '1','0');
    internal_M_wr_data_filtered(3) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_3_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(3));
    M_wr_data_unfiltered_4_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(4))), '1','0');
    internal_M_wr_data_filtered(4) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_4_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(4));
    M_wr_data_unfiltered_5_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(5))), '1','0');
    internal_M_wr_data_filtered(5) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_5_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(5));
    M_wr_data_unfiltered_6_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(6))), '1','0');
    internal_M_wr_data_filtered(6) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_6_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(6));
    M_wr_data_unfiltered_7_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(7))), '1','0');
    internal_M_wr_data_filtered(7) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_7_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(7));
    M_wr_data_unfiltered_8_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(8))), '1','0');
    internal_M_wr_data_filtered(8) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_8_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(8));
    M_wr_data_unfiltered_9_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(9))), '1','0');
    internal_M_wr_data_filtered(9) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_9_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(9));
    M_wr_data_unfiltered_10_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(10))), '1','0');
    internal_M_wr_data_filtered(10) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_10_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(10));
    M_wr_data_unfiltered_11_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(11))), '1','0');
    internal_M_wr_data_filtered(11) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_11_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(11));
    M_wr_data_unfiltered_12_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(12))), '1','0');
    internal_M_wr_data_filtered(12) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_12_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(12));
    M_wr_data_unfiltered_13_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(13))), '1','0');
    internal_M_wr_data_filtered(13) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_13_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(13));
    M_wr_data_unfiltered_14_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(14))), '1','0');
    internal_M_wr_data_filtered(14) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_14_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(14));
    M_wr_data_unfiltered_15_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(15))), '1','0');
    internal_M_wr_data_filtered(15) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_15_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(15));
    M_wr_data_unfiltered_16_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(16))), '1','0');
    internal_M_wr_data_filtered(16) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_16_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(16));
    M_wr_data_unfiltered_17_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(17))), '1','0');
    internal_M_wr_data_filtered(17) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_17_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(17));
    M_wr_data_unfiltered_18_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(18))), '1','0');
    internal_M_wr_data_filtered(18) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_18_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(18));
    M_wr_data_unfiltered_19_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(19))), '1','0');
    internal_M_wr_data_filtered(19) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_19_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(19));
    M_wr_data_unfiltered_20_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(20))), '1','0');
    internal_M_wr_data_filtered(20) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_20_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(20));
    M_wr_data_unfiltered_21_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(21))), '1','0');
    internal_M_wr_data_filtered(21) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_21_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(21));
    M_wr_data_unfiltered_22_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(22))), '1','0');
    internal_M_wr_data_filtered(22) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_22_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(22));
    M_wr_data_unfiltered_23_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(23))), '1','0');
    internal_M_wr_data_filtered(23) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_23_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(23));
    M_wr_data_unfiltered_24_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(24))), '1','0');
    internal_M_wr_data_filtered(24) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_24_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(24));
    M_wr_data_unfiltered_25_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(25))), '1','0');
    internal_M_wr_data_filtered(25) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_25_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(25));
    M_wr_data_unfiltered_26_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(26))), '1','0');
    internal_M_wr_data_filtered(26) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_26_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(26));
    M_wr_data_unfiltered_27_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(27))), '1','0');
    internal_M_wr_data_filtered(27) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_27_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(27));
    M_wr_data_unfiltered_28_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(28))), '1','0');
    internal_M_wr_data_filtered(28) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_28_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(28));
    M_wr_data_unfiltered_29_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(29))), '1','0');
    internal_M_wr_data_filtered(29) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_29_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(29));
    M_wr_data_unfiltered_30_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(30))), '1','0');
    internal_M_wr_data_filtered(30) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_30_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(30));
    M_wr_data_unfiltered_31_is_x <= A_WE_StdLogic(is_x(std_ulogic(M_wr_data_unfiltered(31))), '1','0');
    internal_M_wr_data_filtered(31) <= A_WE_StdLogic((std_logic'(((M_wr_data_unfiltered_31_is_x AND (M_ctrl_ld_non_io)))) = '1'), std_logic'('0'), M_wr_data_unfiltered(31));
    process (clk)
    VARIABLE write_line : line;
    begin
      if clk'event and clk = '1' then
        if std_logic'(reset_n) = '1' then 
          if is_x(std_ulogic(W_wr_dst_reg)) then 
            write(write_line, now);
            write(write_line, string'(": "));
            write(write_line, string'("ERROR: cpu_test_bench/W_wr_dst_reg is 'x'"));
            write(output, write_line.all & CR);
            deallocate (write_line);
            assert false report "VHDL STOP" severity failure;
          end if;
        end if;
      end if;

    end process;

    process (clk, reset_n)
    VARIABLE write_line1 : line;
    begin
      if reset_n = '0' then
      elsif clk'event and clk = '1' then
        if std_logic'(W_wr_dst_reg) = '1' then 
          if is_x(W_dst_regnum) then 
            write(write_line1, now);
            write(write_line1, string'(": "));
            write(write_line1, string'("ERROR: cpu_test_bench/W_dst_regnum is 'x'"));
            write(output, write_line1.all & CR);
            deallocate (write_line1);
            assert false report "VHDL STOP" severity failure;
          end if;
        end if;
      end if;

    end process;

    process (clk, reset_n)
    VARIABLE write_line2 : line;
    begin
      if reset_n = '0' then
      elsif clk'event and clk = '1' then
        if std_logic'(W_wr_dst_reg) = '1' then 
          if is_x(W_wr_data) then 
            write(write_line2, now);
            write(write_line2, string'(": "));
            write(write_line2, string'("ERROR: cpu_test_bench/W_wr_data is 'x'"));
            write(output, write_line2.all & CR);