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--************************************************************************************************

--  Top entity for AVR core

--  Version 1.82? (Special version for the JTAG OCD)

--  Designed by Ruslan Lepetenok 

--  Modified 31.08.2006

--  SLEEP and CLRWDT instructions support was added

--  BREAK instructions support was added 

--  PM clock enable was added

--************************************************************************************************

library IEEE;

use IEEE.std_logic_1164.all;

entity AVR_Core_cm4 is port(

                cp2_cml_1 : in std_logic;

                cp2_cml_2 : in std_logic;

                cp2_cml_3 : in std_logic;

                        --Clock and reset

                            cp2         : in  std_logic;

                                                cp2en       : in  std_logic;

                        ireset      : in  std_logic;

                                            -- JTAG OCD support

                                            valid_instr : out std_logic;

                                                insert_nop  : in  std_logic;

                                                block_irq   : in  std_logic;

                                                change_flow : out std_logic;

                        -- Program Memory

                        pc          : out std_logic_vector(15 downto 0);

                        inst        : in  std_logic_vector(15 downto 0);

                        -- I/O control

                        adr         : out std_logic_vector(5 downto 0);

                        iore        : out std_logic;

                        iowe        : out std_logic;

                        -- Data memory control

                        ramadr      : out std_logic_vector(15 downto 0);

                        ramre       : out std_logic;

                        ramwe       : out std_logic;

                                                cpuwait     : in  std_logic;

                                                -- Data paths

                        dbusin      : in  std_logic_vector(7 downto 0);

                        dbusout     : out std_logic_vector(7 downto 0);

                        -- Interrupt

                        irqlines    : in  std_logic_vector(22 downto 0);

                        irqack      : out std_logic;

                        irqackad    : out std_logic_vector(4 downto 0);

                        --Sleep Control

                        sleepi      : out std_logic;

                        irqok       : out std_logic;

                        globint     : out std_logic;

                        --Watchdog

                        wdri        : out std_logic

                                                );

end AVR_Core_cm4;

architecture Struct of avr_core_cm4 is

component pm_fetch_dec_cm4 is port(

                cp2_cml_1 : in std_logic;

                cp2_cml_2 : in std_logic;

                cp2_cml_3 : in std_logic;

                              -- Clock and reset

                              cp2              : in  std_logic;

                                                          cp2en            : in  std_logic;

                              ireset           : in  std_logic;

                                                          -- JTAG OCD support

                                                  valid_instr      : out  std_logic;

                                                      insert_nop       : in std_logic;

                                                      block_irq        : in std_logic;

                                                      change_flow      : out  std_logic;

                              -- Program memory

                              pc               : out std_logic_vector (15 downto 0);

                              inst             : in  std_logic_vector (15 downto 0);

                              -- I/O control

                              adr              : out std_logic_vector (5 downto 0);

                              iore             : out std_logic;

                              iowe             : out std_logic;

                              -- Data memory control

                              ramadr           : out std_logic_vector (15 downto 0);

                              ramre            : out std_logic;

                              ramwe            : out std_logic;

                              cpuwait          : in  std_logic;

                                                          -- Data paths

                              dbusin           : in  std_logic_vector (7 downto 0);

                              dbusout          : out std_logic_vector (7 downto 0);

                              dbusout_int_route : out std_logic_vector (7 downto 0);

                              -- Interrupt

                              irqlines         : in  std_logic_vector (22 downto 0);

                              irqack           : out std_logic;

                              irqackad         : out std_logic_vector(4 downto 0);

                                                      --Sleep 

                              sleepi           : out std_logic;

                              irqok                : out std_logic;

                              --Watchdog

                              wdri                 : out std_logic;

                                                          -- ALU interface(Data inputs)

                              alu_data_r_in    : out std_logic_vector(7 downto 0);

                                                          -- ALU interface(Instruction inputs)

                                                          idc_add_out      : out std_logic;

                              idc_adc_out      : out std_logic;

                              idc_adiw_out     : out std_logic;

                              idc_sub_out      : out std_logic;

                              idc_subi_out     : out std_logic;

                              idc_sbc_out      : out std_logic;

                              idc_sbci_out     : out std_logic;

                              idc_sbiw_out     : out std_logic;

                              adiw_st_out      : out std_logic;

                              sbiw_st_out      : out std_logic;

                              idc_and_out      : out std_logic;

                              idc_andi_out     : out std_logic;

                              idc_or_out       : out std_logic;

                              idc_ori_out      : out std_logic;

                              idc_eor_out      : out std_logic;

                              idc_com_out      : out std_logic;

                              idc_neg_out      : out std_logic;

                              idc_inc_out      : out std_logic;

                              idc_dec_out      : out std_logic;

                              idc_cp_out       : out std_logic;

                              idc_cpc_out      : out std_logic;

                              idc_cpi_out      : out std_logic;

                              idc_cpse_out     : out std_logic;

                              idc_lsr_out      : out std_logic;

                              idc_ror_out      : out std_logic;

                              idc_asr_out      : out std_logic;

                              idc_swap_out     : out std_logic;

                               -- ALU interface(Data output)

                               alu_data_out    : in std_logic_vector(7 downto 0);

                               -- ALU interface(Flag outputs)

                               alu_c_flag_out  : in std_logic;

                               alu_z_flag_out  : in std_logic;

                               alu_n_flag_out  : in std_logic;

                               alu_v_flag_out  : in std_logic;

                               alu_s_flag_out  : in std_logic;

                               alu_h_flag_out  : in std_logic;

                                                           -- General purpose register file interface

                               reg_rd_in       : out std_logic_vector  (7 downto 0);

                               reg_rd_out      : in  std_logic_vector  (7 downto 0);

                               reg_rd_out_int  : in std_logic_vector(7 downto 0);

                               reg_rd_adr      : out std_logic_vector  (4 downto 0);

                               reg_rd_adr_int      : out std_logic_vector  (4 downto 0);

                               reg_rr_out      : in  std_logic_vector  (7 downto 0);

                               reg_rr_adr      : out std_logic_vector  (4 downto 0);

                               reg_rd_wr       : out std_logic;

                               post_inc        : out std_logic;                       -- POST INCREMENT FOR LD/ST INSTRUCTIONS

                               pre_dec         : out std_logic;                        -- PRE DECREMENT FOR LD/ST INSTRUCTIONS

                               reg_h_wr        : out std_logic;

                               reg_h_out       : in  std_logic_vector (15 downto 0);

                               reg_h_adr       : out std_logic_vector (2 downto 0);    -- x,y,z

                                       reg_z_out       : in  std_logic_vector (15 downto 0);  -- OUTPUT OF R31:R30 FOR LPM/ELPM/IJMP INSTRUCTIONS

                               -- I/O register file interface

                               sreg_fl_in      : out std_logic_vector(7 downto 0);

                               globint         : in  std_logic; -- SREG I flag

                               sreg_fl_wr_en   : out std_logic_vector(7 downto 0);   --FLAGS WRITE ENABLE SIGNALS       

                               spl_out         : in  std_logic_vector(7 downto 0);

                               sph_out         : in  std_logic_vector(7 downto 0);

                               sp_ndown_up     : out std_logic; -- DIRECTION OF CHANGING OF STACK POINTER SPH:SPL 0->UP(+) 1->DOWN(-)

                               sp_en           : out std_logic; -- WRITE ENABLE(COUNT ENABLE) FOR SPH AND SPL REGISTERS

                               rampz_out       : in  std_logic_vector(7 downto 0);

                                                           -- Bit processor interface

                               bit_num_r_io    : out std_logic_vector(2 downto 0); -- BIT NUMBER FOR CBI/SBI/BLD/BST/SBRS/SBRC/SBIC/SBIS INSTRUCTIONS

                               bitpr_io_out    : in  std_logic_vector(7 downto 0); -- SBI/CBI OUT        

                               branch          : out std_logic_vector(2 downto 0); -- NUMBER (0..7) OF BRANCH CONDITION FOR BRBS/BRBC INSTRUCTION

                               bit_pr_sreg_out : in  std_logic_vector(7 downto 0); -- BCLR/BSET/BST(T-FLAG ONLY)             

                               bld_op_out      : in  std_logic_vector(7 downto 0); -- BLD OUT (T FLAG)

                               bit_test_op_out : in  std_logic;                    -- OUTPUT OF SBIC/SBIS/SBRS/SBRC

                               sbi_st_out      : out std_logic;

                               cbi_st_out      : out std_logic;

                               idc_bst_out     : out std_logic;

                               idc_bset_out    : out std_logic;

                               idc_bclr_out    : out std_logic;

                               idc_sbic_out    : out std_logic;

                               idc_sbis_out    : out std_logic;

                               idc_sbrs_out    : out std_logic;

                               idc_sbrc_out    : out std_logic;

                               idc_brbs_out    : out std_logic;

                               idc_brbc_out    : out std_logic;

                               idc_reti_out    : out std_logic);

end component;

component alu_avr_cm4 is port(

                cp2_cml_1 : in std_logic;

                cp2_cml_2 : in std_logic;

                cp2_cml_3 : in std_logic;

              alu_data_r_in   : in std_logic_vector(7 downto 0);

              alu_data_d_in   : in std_logic_vector(7 downto 0);

              alu_c_flag_in   : in std_logic;

              alu_z_flag_in   : in std_logic;

-- OPERATION SIGNALS INPUTS

              idc_add         :in std_logic;

              idc_adc         :in std_logic;

              idc_adiw        :in std_logic;

              idc_sub         :in std_logic;

              idc_subi        :in std_logic;

              idc_sbc         :in std_logic;

              idc_sbci        :in std_logic;

              idc_sbiw        :in std_logic;

              adiw_st         : in std_logic;

              sbiw_st         : in std_logic;

              idc_and         :in std_logic;

              idc_andi        :in std_logic;

              idc_or          :in std_logic;

              idc_ori         :in std_logic;

              idc_eor         :in std_logic;

              idc_com         :in std_logic;

              idc_neg         :in std_logic;

              idc_inc         :in std_logic;

              idc_dec         :in std_logic;

              idc_cp          :in std_logic;

              idc_cpc         :in std_logic;

              idc_cpi         :in std_logic;

              idc_cpse        :in std_logic;

              idc_lsr         :in std_logic;

              idc_ror         :in std_logic;

              idc_asr         :in std_logic;

              idc_swap        :in std_logic;

-- DATA OUTPUT

              alu_data_out    : out std_logic_vector(7 downto 0);

-- FLAGS OUTPUT

              alu_c_flag_out  : out std_logic;

              alu_z_flag_out  : out std_logic;

              alu_n_flag_out  : out std_logic;

              alu_v_flag_out  : out std_logic;

              alu_s_flag_out  : out std_logic;

              alu_h_flag_out  : out std_logic

);

end component;

component reg_file_cm4 is port (

                cp2_cml_1 : in std_logic;

                cp2_cml_2 : in std_logic;

                cp2_cml_3 : in std_logic;

                                                        --Clock and reset

                                                cp2         : in  std_logic;

                                                        cp2en       : in  std_logic;

                            ireset      : in  std_logic;

                            reg_rd_in   : in std_logic_vector  (7 downto 0);

                            reg_rd_out  : out std_logic_vector (7 downto 0);

                            reg_rd_out_int  : out std_logic_vector(7 downto 0);

                            reg_rd_adr  : in std_logic_vector  (4 downto 0);

                            reg_rd_adr_int      : in std_logic_vector  (4 downto 0);

                            reg_rr_out  : out std_logic_vector (7 downto 0);

                            reg_rr_adr  : in std_logic_vector  (4 downto 0);

                            reg_rd_wr   : in std_logic;

                            post_inc    : in std_logic;                       -- POST INCREMENT FOR LD/ST INSTRUCTIONS

                            pre_dec     : in std_logic;                        -- PRE DECREMENT FOR LD/ST INSTRUCTIONS

                            reg_h_wr    : in std_logic;

                            reg_h_out   : out std_logic_vector (15 downto 0);

                            reg_h_adr   : in std_logic_vector (2 downto 0);    -- x,y,z

                                    reg_z_out   : out std_logic_vector (15 downto 0)  -- OUTPUT OF R31:R30 FOR LPM/ELPM/IJMP INSTRUCTIONS

                            );

end component;

component io_reg_file_cm4 is port (

                cp2_cml_1 : in std_logic;

                cp2_cml_2 : in std_logic;

                cp2_cml_3 : in std_logic;

                                       --Clock and reset

                                   cp2           : in  std_logic;

                                                           cp2en         : in  std_logic;

                               ireset        : in  std_logic;

                               adr           : in  std_logic_vector(5 downto 0);

                               iowe          : in  std_logic;

                               dbusout       : in  std_logic_vector(7 downto 0);

                               sreg_fl_in    : in  std_logic_vector(7 downto 0);

                               sreg_out      : out std_logic_vector(7 downto 0);

                               sreg_fl_wr_en : in std_logic_vector (7 downto 0);   --FLAGS WRITE ENABLE SIGNALS       

                               spl_out       : out std_logic_vector(7 downto 0);

                               sph_out       : out std_logic_vector(7 downto 0);

                               sp_ndown_up   : in  std_logic; -- DIRECTION OF CHANGING OF STACK POINTER SPH:SPL 0->UP(+) 1->DOWN(-)

                               sp_en         : in  std_logic; -- WRITE ENABLE(COUNT ENABLE) FOR SPH AND SPL REGISTERS

                               rampz_out     : out std_logic_vector(7 downto 0));

end component;

component bit_processor_cm4 is port(

                cp2_cml_1 : in std_logic;

                cp2_cml_2 : in std_logic;

                cp2_cml_3 : in std_logic;

                                                          --Clock and reset

                              cp2             : in  std_logic;

                                                          cp2en           : in  std_logic;

                              ireset          : in  std_logic;

                              bit_num_r_io    : in  std_logic_vector(2 downto 0); -- BIT NUMBER FOR CBI/SBI/BLD/BST/SBRS/SBRC/SBIC/SBIS INSTRUCTIONS

                              dbusin          : in  std_logic_vector(7 downto 0); -- SBI/CBI/SBIS/SBIC  IN

                              bitpr_io_out    : out std_logic_vector(7 downto 0); -- SBI/CBI OUT        

                              sreg_out        : in  std_logic_vector(7 downto 0); -- BRBS/BRBC/BLD IN 

                              branch          : in  std_logic_vector(2 downto 0); -- NUMBER (0..7) OF BRANCH CONDITION FOR BRBS/BRBC INSTRUCTION

                              bit_pr_sreg_out : out std_logic_vector(7 downto 0); -- BCLR/BSET/BST(T-FLAG ONLY)             

                              bld_op_out      : out std_logic_vector(7 downto 0); -- BLD OUT (T FLAG)

                              reg_rd_out      : in  std_logic_vector(7 downto 0); -- BST/SBRS/SBRC IN    

                              bit_test_op_out : out std_logic;                    -- OUTPUT OF SBIC/SBIS/SBRS/SBRC/BRBC/BRBS

                              -- Instructions and states

                              sbi_st          : in  std_logic;

                              cbi_st          : in  std_logic;

                              idc_bst         : in  std_logic;

                              idc_bset        : in  std_logic;

                              idc_bclr        : in  std_logic;

                              idc_sbic        : in  std_logic;

                              idc_sbis        : in  std_logic;

                              idc_sbrs        : in  std_logic;

                              idc_sbrc        : in  std_logic;

                              idc_brbs        : in  std_logic;

                              idc_brbc        : in  std_logic;

                              idc_reti        : in  std_logic

                                                          );

end component;

component io_adr_dec_cm4 is port (

                cp2_cml_1 : in std_logic;

                cp2_cml_2 : in std_logic;

          adr          : in std_logic_vector(5 downto 0);

          iore         : in std_logic;

          dbusin_ext   : in std_logic_vector(7 downto 0);

          dbusin_int   : out std_logic_vector(7 downto 0);

          spl_out      : in std_logic_vector(7 downto 0);

          sph_out      : in std_logic_vector(7 downto 0);

          sreg_out     : in std_logic_vector(7 downto 0);

          rampz_out    : in std_logic_vector(7 downto 0));

end component;

signal dbusin_int  : std_logic_vector(7 downto 0);

signal dbusout_int : std_logic_vector(7 downto 0);

signal adr_int     : std_logic_vector(5 downto 0);

signal iowe_int    : std_logic;

signal iore_int    : std_logic;

-- SIGNALS FOR INSTRUCTION AND STATES

signal idc_add  : std_logic;

signal idc_adc  : std_logic;

signal idc_adiw : std_logic;

signal idc_sub  : std_logic;

signal idc_subi : std_logic;

signal idc_sbc  : std_logic;

signal idc_sbci : std_logic;

signal idc_sbiw : std_logic;

signal adiw_st  : std_logic;

signal sbiw_st  : std_logic;

signal idc_and  : std_logic;

signal idc_andi : std_logic;

signal idc_or   : std_logic;

signal idc_ori  : std_logic;

signal idc_eor  : std_logic;

signal idc_com  : std_logic;

signal idc_neg  : std_logic;

signal idc_inc  : std_logic;

signal idc_dec  : std_logic;

signal idc_cp   : std_logic;

signal idc_cpc  : std_logic;

signal idc_cpi  : std_logic;

signal idc_cpse : std_logic;

signal idc_lsr  : std_logic;

signal idc_ror  : std_logic;

signal idc_asr  : std_logic;

signal idc_swap : std_logic;

signal sbi_st   : std_logic;

signal cbi_st   : std_logic;

signal idc_bst  : std_logic;

signal idc_bset : std_logic;

signal idc_bclr : std_logic;

signal idc_sbic : std_logic;

signal idc_sbis : std_logic;

signal idc_sbrs : std_logic;

signal idc_sbrc : std_logic;

signal idc_brbs : std_logic;

signal idc_brbc : std_logic;

signal idc_reti : std_logic;

signal alu_data_r_in : std_logic_vector(7 downto 0);

signal alu_data_out  : std_logic_vector(7 downto 0);

signal reg_rd_in     : std_logic_vector(7 downto 0);

signal reg_rd_out    : std_logic_vector(7 downto 0);

signal reg_rd_out_int : std_logic_vector(7 downto 0);

signal reg_rr_out    : std_logic_vector(7 downto 0);

signal reg_rd_adr    : std_logic_vector(4 downto 0);

signal reg_rd_adr_int    : std_logic_vector(4 downto 0);

signal reg_rr_adr    : std_logic_vector(4 downto 0);

signal reg_h_out     : std_logic_vector(15 downto 0);

signal reg_z_out     : std_logic_vector(15 downto 0);

signal reg_h_adr     : std_logic_vector(2 downto 0);

signal reg_rd_wr     : std_logic;

signal post_inc      : std_logic;

signal pre_dec       : std_logic;

signal reg_h_wr      : std_logic;

signal sreg_fl_in    : std_logic_vector(7 downto 0);

signal sreg_out      : std_logic_vector(7 downto 0);

signal sreg_out_0      : std_logic;

signal sreg_out_1      : std_logic;

signal sreg_out_7      : std_logic;

signal sreg_fl_wr_en : std_logic_vector(7 downto 0);

signal spl_out       : std_logic_vector(7 downto 0);

signal sph_out       : std_logic_vector(7 downto 0);

signal rampz_out     : std_logic_vector(7 downto 0);

signal sp_ndown_up   : std_logic;

signal sp_en         : std_logic;

signal bit_num_r_io  : std_logic_vector(2 downto 0);

signal branch        : std_logic_vector(2 downto 0);

signal bitpr_io_out    : std_logic_vector(7 downto 0);

signal bit_pr_sreg_out : std_logic_vector(7 downto 0);

signal sreg_flags      : std_logic_vector(7 downto 0);

signal bld_op_out      : std_logic_vector(7 downto 0);

signal reg_file_rd_in  : std_logic_vector(7 downto 0);

signal bit_test_op_out : std_logic;

signal alu_c_flag_out  : std_logic;

signal alu_z_flag_out  : std_logic;

signal alu_n_flag_out  : std_logic;

signal alu_v_flag_out  : std_logic;

signal alu_s_flag_out  : std_logic;

signal alu_h_flag_out  : std_logic;

signal adr_cml_out :  std_logic_vector ( 5 downto 0 );

signal adr_int_cml_3 :  std_logic_vector ( 5 downto 0 );

signal iore_cml_out :  std_logic;

signal iore_int_cml_3 :  std_logic;

signal globint_cml_out :  std_logic;

signal sreg_out_cml_3 :  std_logic_vector ( 7 downto 0 );

signal sreg_out_cml_2 :  std_logic_vector ( 7 downto 0 );

signal sreg_out_cml_1 :  std_logic_vector ( 7 downto 0 );

begin

process(cp2_cml_1) begin

if (cp2_cml_1 = '1' and cp2_cml_1'event) then

        sreg_out_cml_1 <= sreg_out;

end if;

end process;

process(cp2_cml_2) begin

if (cp2_cml_2 = '1' and cp2_cml_2'event) then

        sreg_out_cml_2 <= sreg_out_cml_1;

end if;

end process;

process(cp2_cml_3) begin

if (cp2_cml_3 = '1' and cp2_cml_3'event) then

        adr_int_cml_3 <= adr_int;

        iore_int_cml_3 <= iore_int;

        sreg_out_cml_3 <= sreg_out_cml_2;

end if;

end process;

adr <= adr_cml_out;

iore <= iore_cml_out;

globint <= globint_cml_out;

pm_fetch_dec_Inst:component pm_fetch_dec_cm4 port map (

                cp2_cml_1 => cp2_cml_1,

                cp2_cml_2 => cp2_cml_2,

                cp2_cml_3 => cp2_cml_3,

                                      -- Clock and reset

                                      cp2      => cp2,

                                                                          cp2en    => cp2en,

                                      ireset   => ireset,

                                                                          -- JTAG OCD support

                                                                  valid_instr => valid_instr,

                                                              insert_nop  => insert_nop,

                                                              block_irq   => block_irq,

                                                              change_flow => change_flow,

                                      -- Program memory

                                      pc       => pc,

                                      inst     => inst,

                                      -- I/O control

                                      adr      => adr_int,

                                      iore     => iore_int,

                                      iowe     => iowe_int,

                                      -- Data memory control

                                      ramadr   => ramadr,

                                      ramre    => ramre,

                                      ramwe    => ramwe,

                                      cpuwait  => cpuwait,

                                      -- Data paths

                                      dbusin   => dbusin_int,

                                      dbusout  => dbusout,

                                          dbusout_int_route => dbusout_int,

                                      -- Interrupt

                                      irqlines => irqlines,

                                      irqack   => irqack,

                                      irqackad => irqackad,

                                      --Sleep 

                                      sleepi     => sleepi,

                                      irqok      => irqok,

                                      --Watchdog

                                      wdri       => wdri,

                                                                         -- ALU interface(Data inputs)

                                     alu_data_r_in   => alu_data_r_in,

                                                                         -- ALU interface(Instruction inputs)

                                     idc_add_out  => idc_add,

                                     idc_adc_out  => idc_adc,

                                     idc_adiw_out => idc_adiw,

                                     idc_sub_out  => idc_sub,

                                     idc_subi_out => idc_subi,

                                     idc_sbc_out  => idc_sbc,

                                     idc_sbci_out => idc_sbci,

                                     idc_sbiw_out => idc_sbiw,

                                     adiw_st_out  => adiw_st,

                                     sbiw_st_out  => sbiw_st,

                                     idc_and_out  => idc_and,

                                     idc_andi_out => idc_andi,

                                     idc_or_out   => idc_or,

                                     idc_ori_out  => idc_ori,

                                     idc_eor_out  => idc_eor,

                                     idc_com_out  => idc_com,

                                     idc_neg_out  => idc_neg,

                                     idc_inc_out  => idc_inc,

                                     idc_dec_out  => idc_dec,

                                     idc_cp_out   => idc_cp,

                                     idc_cpc_out  => idc_cpc,

                                     idc_cpi_out  => idc_cpi,

                                     idc_cpse_out => idc_cpse,

                                     idc_lsr_out  => idc_lsr,

                                     idc_ror_out  => idc_ror,

                                     idc_asr_out  => idc_asr,

                                     idc_swap_out => idc_swap,

                                     -- ALU interface(Data output)

                                     alu_data_out => alu_data_out,

                                     -- ALU interface(Flag outputs)

                                     alu_c_flag_out => alu_c_flag_out,

                                     alu_z_flag_out => alu_z_flag_out,

                                     alu_n_flag_out => alu_n_flag_out,

                                     alu_v_flag_out => alu_v_flag_out,

                                     alu_s_flag_out => alu_s_flag_out,

                                     alu_h_flag_out => alu_h_flag_out,

                                     -- General purpose register file interface

                                     reg_rd_in   => reg_rd_in,

                                     reg_rd_out  => reg_rd_out,

                                         reg_rd_out_int => reg_rd_out_int,

                                     reg_rd_adr  => reg_rd_adr,

                                     reg_rd_adr_int  => reg_rd_adr_int,

                                     reg_rr_out  => reg_rr_out,

                                     reg_rr_adr  => reg_rr_adr,

                                     reg_rd_wr   => reg_rd_wr,

                                     post_inc    => post_inc,

                                     pre_dec     => pre_dec,

                                     reg_h_wr    => reg_h_wr,

                                     reg_h_out   => reg_h_out,

                                     reg_h_adr   => reg_h_adr,

                                             reg_z_out   => reg_z_out,

                                     -- I/O register file interface

                                     sreg_fl_in    => sreg_fl_in, --??   

                                     globint       => sreg_out_7, -- SREG I flag   

                                     sreg_fl_wr_en => sreg_fl_wr_en,

                                     spl_out       => spl_out,

                                     sph_out       => sph_out,

                                     sp_ndown_up   => sp_ndown_up,

                                     sp_en         => sp_en,

                                     rampz_out     => rampz_out,

                                     -- Bit processor interface

                                     bit_num_r_io    => bit_num_r_io,

                                     bitpr_io_out    => bitpr_io_out,

                                     branch          => branch,