mico8.vhm

Lattice 超精简8位软核CPU--Mico8

      Data(7) => PC_INT(7),
      Data(8) => PC_INT(8),
      Data(9) => ZERO_FLAG_INT_18,
      Data(10) => CARRY_FLAG_INT_12,
      Clock => MicoCLK,
      ClockEn => VCC,
      WE => N_22,
      Reset => GND,
      Q(0) => DOUT_STACK(0),
      Q(1) => DOUT_STACK(1),
      Q(2) => DOUT_STACK(2),
      Q(3) => DOUT_STACK(3),
      Q(4) => DOUT_STACK(4),
      Q(5) => DOUT_STACK(5),
      Q(6) => DOUT_STACK(6),
      Q(7) => DOUT_STACK(7),
      Q(8) => DOUT_STACK(8),
      Q(9) => PUSHED_ZERO,
      Q(10) => PUSHED_CARRY);
  NN_1 <= '0';
  NN_2 <= '1';
  sp_we_1_i_o2_N_14_i <= SP_WE_1_I_O2_N_14_I_INT_11;
  carry_flag <= CARRY_FLAG_INT_12;
  ext_addr_cyc_int_Q <= EXT_ADDR_CYC_INT_Q_INT_13;
  INTAck_c <= INTACK_C_INT_14;
  intr_reg0 <= INTR_REG0_INT_15;
  addr_cyc <= ADDR_CYC_INT_16;
  data_cyc_int <= DATA_CYC_INT_INT_17;
  zero_flag <= ZERO_FLAG_INT_18;
end beh;

--
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
library synplify;
use synplify.components.all;
library ecp2;
use ecp2.components.all;

entity isp8_alu is
port(
  dout_alu : out std_logic_vector(7 downto 0);
  dout_rd : in std_logic_vector(7 downto 0);
  Mico8_Instr_17 :  in std_logic;
  Mico8_Instr_16 :  in std_logic;
  Mico8_Instr_15 :  in std_logic;
  Mico8_Instr_14 :  in std_logic;
  Mico8_Instr_0 :  in std_logic;
  Mico8_Instr_7 :  in std_logic;
  Mico8_Instr_6 :  in std_logic;
  Mico8_Instr_5 :  in std_logic;
  Mico8_Instr_4 :  in std_logic;
  Mico8_Instr_3 :  in std_logic;
  Mico8_Instr_2 :  in std_logic;
  Mico8_Instr_13 :  in std_logic;
  Mico8_Instr_1 :  in std_logic;
  dout_rb : in std_logic_vector(7 downto 0);
  cout_alu_u_0_1 :  out std_logic;
  N_221 :  in std_logic;
  sub :  in std_logic;
  N_140 :  out std_logic;
  N_36_1 :  in std_logic;
  instr_l2_3 :  in std_logic;
  carry_flag :  in std_logic;
  GND :  in std_logic);
end isp8_alu;

architecture beh of isp8_alu is
  signal DATA_RB_INT_I_0_M2_I_M3_0 : std_logic_vector(4 to 4);
  signal DOUT_ALU_1_U_0_0_2 : std_logic_vector(6 downto 1);
  signal DOUT_ALU_1_U_0_0_A7_1_0 : std_logic_vector(6 downto 1);
  signal DOUT_ALU_1_U_0_0_0 : std_logic_vector(6 downto 0);
  signal DOUT_ALU_1_U_I_I_0 : std_logic_vector(7 to 7);
  signal DATA_ADD : std_logic_vector(7 downto 0);
  signal DOUT_ALU_1_U_0_0_1 : std_logic_vector(6 downto 0);
  signal DOUT_ALU_1_U_I_I_1 : std_logic_vector(7 to 7);
  signal DOUT_ALU_1_U_I_I_3 : std_logic_vector(7 to 7);
  signal DOUT_ALU_1_U_0_0_3 : std_logic_vector(0 to 0);
  signal N_55 : std_logic ;
  signal N_56 : std_logic ;
  signal N_57 : std_logic ;
  signal N_59 : std_logic ;
  signal N_60 : std_logic ;
  signal N_61 : std_logic ;
  signal N_63 : std_logic ;
  signal N_90 : std_logic ;
  signal N_220 : std_logic ;
  signal N_223 : std_logic ;
  signal N_241 : std_logic ;
  signal N_242 : std_logic ;
  signal N_163 : std_logic ;
  signal N_145 : std_logic ;
  signal COUT_ALU_U_0_A7_0 : std_logic ;
  signal N_64 : std_logic ;
  signal N_144 : std_logic ;
  signal N_64_I : std_logic ;
  signal N_243 : std_logic ;
  signal COUT_ALU_U_0_0 : std_logic ;
  signal CARRY_ADD_INT : std_logic ;
  signal ADSU_CI : std_logic ;
  signal OVERFLOW : std_logic ;
  signal NN_1 : std_logic ;
  signal VCC : std_logic ;
  component pmi_addsub_work_mico8_schematic_0
    port(
      DataA : in std_logic_vector(7 downto 0);
      DataB : in std_logic_vector(7 downto 0);
      Cin :  in std_logic;
      Add_Sub :  in std_logic;
      Result : out std_logic_vector(7 downto 0);
      Cout :  out std_logic;
      Overflow :  out std_logic  );
  end component;
begin
  N_55 <= (dout_rb(1) and not Mico8_Instr_13) or 
	  (Mico8_Instr_1 and Mico8_Instr_13);
  N_56 <= (dout_rb(2) and not Mico8_Instr_13) or 
	  (Mico8_Instr_2 and Mico8_Instr_13);
  N_57 <= (dout_rb(3) and not Mico8_Instr_13) or 
	  (Mico8_Instr_3 and Mico8_Instr_13);
  DATA_RB_INT_I_0_M2_I_M3_0(4) <= (dout_rb(4) and not Mico8_Instr_13) or 
	  (Mico8_Instr_4 and Mico8_Instr_13);
  N_59 <= (dout_rb(5) and not Mico8_Instr_13) or 
	  (Mico8_Instr_5 and Mico8_Instr_13);
  N_60 <= (dout_rb(6) and not Mico8_Instr_13) or 
	  (Mico8_Instr_6 and Mico8_Instr_13);
  N_61 <= (dout_rb(7) and not Mico8_Instr_13) or 
	  (Mico8_Instr_7 and Mico8_Instr_13);
  N_63 <= (dout_rb(0) and not Mico8_Instr_13) or 
	  (Mico8_Instr_0 and Mico8_Instr_13);
  N_90 <= (not Mico8_Instr_14 and not Mico8_Instr_15) or 
	  (Mico8_Instr_1 and Mico8_Instr_15);
  N_220 <= Mico8_Instr_15 and Mico8_Instr_16 and not Mico8_Instr_17;
  N_223 <= not Mico8_Instr_14 and Mico8_Instr_16 and not Mico8_Instr_17;
  DOUT_ALU_1_U_0_0_2(6) <= (dout_rb(7) and N_241) or 
	  (dout_rb(5) and N_242);
  DOUT_ALU_1_U_0_0_2(3) <= (dout_rb(4) and N_241) or 
	  (dout_rb(2) and N_242);
  DOUT_ALU_1_U_0_0_2(5) <= (dout_rb(6) and N_241) or 
	  (dout_rb(4) and N_242);
  DOUT_ALU_1_U_0_0_2(1) <= (dout_rb(2) and N_241) or 
	  (dout_rb(0) and N_242);
  DOUT_ALU_1_U_0_0_2(4) <= (dout_rb(5) and N_241) or 
	  (dout_rb(3) and N_242);
  DOUT_ALU_1_U_0_0_2(2) <= (dout_rb(3) and N_241) or 
	  (dout_rb(1) and N_242);
  N_163 <= (dout_rb(0) and N_241 and not Mico8_Instr_1) or 
	  (carry_flag and N_241 and Mico8_Instr_1);
  N_145 <= (dout_rb(7) and N_242 and not Mico8_Instr_1) or 
	  (carry_flag and N_242 and Mico8_Instr_1);
  COUT_ALU_U_0_A7_0 <= (dout_rb(0) and not Mico8_Instr_0 and Mico8_Instr_1) or 
	  (dout_rb(7) and Mico8_Instr_0 and Mico8_Instr_1);
  DOUT_ALU_1_U_0_0_A7_1_0(4) <= (dout_rb(4) and dout_rd(4) and not Mico8_Instr_13) or 
	  (dout_rd(4) and Mico8_Instr_4 and Mico8_Instr_13);
  DOUT_ALU_1_U_0_0_A7_1_0(1) <= (dout_rb(1) and dout_rd(1) and not Mico8_Instr_13) or 
	  (dout_rd(1) and Mico8_Instr_1 and Mico8_Instr_13);
  DOUT_ALU_1_U_0_0_A7_1_0(5) <= (dout_rb(5) and dout_rd(5) and not Mico8_Instr_13) or 
	  (dout_rd(5) and Mico8_Instr_5 and Mico8_Instr_13);
  DOUT_ALU_1_U_0_0_A7_1_0(2) <= (dout_rb(2) and dout_rd(2) and not Mico8_Instr_13) or 
	  (dout_rd(2) and Mico8_Instr_2 and Mico8_Instr_13);
  DOUT_ALU_1_U_0_0_A7_1_0(6) <= (dout_rb(6) and dout_rd(6) and not Mico8_Instr_13) or 
	  (dout_rd(6) and Mico8_Instr_6 and Mico8_Instr_13);
  DOUT_ALU_1_U_0_0_A7_1_0(3) <= (dout_rb(3) and dout_rd(3) and not Mico8_Instr_13) or 
	  (dout_rd(3) and Mico8_Instr_3 and Mico8_Instr_13);
  N_64 <= (not Mico8_Instr_15 and not Mico8_Instr_16 and not Mico8_Instr_17) or 
	  (not Mico8_Instr_14 and not Mico8_Instr_15 and not Mico8_Instr_16);
  N_242 <= Mico8_Instr_0 and Mico8_Instr_15 and not Mico8_Instr_16 and Mico8_Instr_17;
  N_241 <= not Mico8_Instr_0 and Mico8_Instr_15 and not Mico8_Instr_16 and Mico8_Instr_17;
  N_144 <= carry_flag and instr_l2_3 and not Mico8_Instr_16 and not Mico8_Instr_17;
  N_64_I <= (Mico8_Instr_15) or 
	  (Mico8_Instr_16) or 
	  (Mico8_Instr_14 and Mico8_Instr_17);
  N_243 <= (not Mico8_Instr_15 and Mico8_Instr_16 and not Mico8_Instr_17) or 
	  (Mico8_Instr_14 and not Mico8_Instr_15 and not Mico8_Instr_16 and Mico8_Instr_17);
  COUT_ALU_U_0_0 <= (carry_flag and Mico8_Instr_16 and not Mico8_Instr_17) or 
	  (carry_flag and not N_90 and not Mico8_Instr_16 and Mico8_Instr_17);
  DOUT_ALU_1_U_0_0_0(6) <= (dout_rd(6) and not N_60 and N_220) or 
	  (not dout_rd(6) and N_60 and N_220) or 
	  (N_60 and N_223);
  DOUT_ALU_1_U_0_0_0(3) <= (dout_rd(3) and not N_57 and N_220) or 
	  (not dout_rd(3) and N_57 and N_220) or 
	  (N_57 and N_223);
  DOUT_ALU_1_U_0_0_0(5) <= (dout_rd(5) and not N_59 and N_220) or 
	  (not dout_rd(5) and N_59 and N_220) or 
	  (N_59 and N_223);
  DOUT_ALU_1_U_0_0_0(1) <= (dout_rd(1) and not N_55 and N_220) or 
	  (not dout_rd(1) and N_55 and N_220) or 
	  (N_55 and N_223);
  DOUT_ALU_1_U_I_I_0(7) <= (dout_rd(7) and not N_61 and N_220) or 
	  (not dout_rd(7) and N_61 and N_220) or 
	  (N_61 and N_223);
  DOUT_ALU_1_U_0_0_0(4) <= (dout_rd(4) and N_220 and not DATA_RB_INT_I_0_M2_I_M3_0(4)) or 
	  (not dout_rd(4) and N_220 and DATA_RB_INT_I_0_M2_I_M3_0(4)) or 
	  (N_223 and DATA_RB_INT_I_0_M2_I_M3_0(4));
  DOUT_ALU_1_U_0_0_0(0) <= (dout_rd(0) and not N_63 and N_220) or 
	  (not dout_rd(0) and N_63 and N_220) or 
	  (N_63 and N_223);
  DOUT_ALU_1_U_0_0_0(2) <= (dout_rd(2) and not N_56 and N_220) or 
	  (not dout_rd(2) and N_56 and N_220) or 
	  (N_56 and N_223);
  N_140 <= (not N_36_1 and N_64 and not CARRY_ADD_INT) or 
	  (not N_36_1 and not N_64 and CARRY_ADD_INT);
  ADSU_CI <= (sub) or 
	  (not carry_flag and N_64) or 
	  (N_144);
  cout_alu_u_0_1 <= (COUT_ALU_U_0_0) or 
	  (N_221 and COUT_ALU_U_0_A7_0 and Mico8_Instr_15);
  DOUT_ALU_1_U_0_0_1(6) <= (not N_36_1 and DATA_ADD(6)) or 
	  (DOUT_ALU_1_U_0_0_0(6));
  DOUT_ALU_1_U_0_0_1(3) <= (not N_36_1 and DATA_ADD(3)) or 
	  (DOUT_ALU_1_U_0_0_0(3));
  DOUT_ALU_1_U_0_0_1(5) <= (not N_36_1 and DATA_ADD(5)) or 
	  (DOUT_ALU_1_U_0_0_0(5));
  DOUT_ALU_1_U_0_0_1(1) <= (not N_36_1 and DATA_ADD(1)) or 
	  (DOUT_ALU_1_U_0_0_0(1));
  DOUT_ALU_1_U_I_I_1(7) <= (not N_36_1 and DATA_ADD(7)) or 
	  (DOUT_ALU_1_U_I_I_0(7));
  DOUT_ALU_1_U_0_0_1(4) <= (not N_36_1 and DATA_ADD(4)) or 
	  (DOUT_ALU_1_U_0_0_0(4));
  DOUT_ALU_1_U_0_0_1(0) <= (not N_36_1 and DATA_ADD(0)) or 
	  (DOUT_ALU_1_U_0_0_0(0));
  DOUT_ALU_1_U_0_0_1(2) <= (not N_36_1 and DATA_ADD(2)) or 
	  (DOUT_ALU_1_U_0_0_0(2));
  DOUT_ALU_1_U_I_I_3(7) <= (dout_rd(7) and N_61 and N_243) or 
	  (DOUT_ALU_1_U_I_I_1(7));
  DOUT_ALU_1_U_0_0_3(0) <= (dout_rd(0) and N_63 and N_243) or 
	  (DOUT_ALU_1_U_0_0_1(0));
  dout_alu(0) <= (N_145) or 
	  (dout_rb(1) and N_241) or 
	  (DOUT_ALU_1_U_0_0_3(0));
  dout_alu(7) <= (N_163) or 
	  (dout_rb(6) and N_242) or 
	  (DOUT_ALU_1_U_I_I_3(7));
  dout_alu(6) <= (DOUT_ALU_1_U_0_0_1(6)) or 
	  (DOUT_ALU_1_U_0_0_2(6)) or 
	  (N_243 and DOUT_ALU_1_U_0_0_A7_1_0(6));
  dout_alu(5) <= (DOUT_ALU_1_U_0_0_1(5)) or 
	  (DOUT_ALU_1_U_0_0_2(5)) or 
	  (N_243 and DOUT_ALU_1_U_0_0_A7_1_0(5));
  dout_alu(4) <= (DOUT_ALU_1_U_0_0_1(4)) or 
	  (DOUT_ALU_1_U_0_0_2(4)) or 
	  (N_243 and DOUT_ALU_1_U_0_0_A7_1_0(4));
  dout_alu(3) <= (DOUT_ALU_1_U_0_0_1(3)) or 
	  (DOUT_ALU_1_U_0_0_2(3)) or 
	  (N_243 and DOUT_ALU_1_U_0_0_A7_1_0(3));
  dout_alu(2) <= (DOUT_ALU_1_U_0_0_1(2)) or 
	  (DOUT_ALU_1_U_0_0_2(2)) or 
	  (N_243 and DOUT_ALU_1_U_0_0_A7_1_0(2));
  dout_alu(1) <= (DOUT_ALU_1_U_0_0_1(1)) or 
	  (DOUT_ALU_1_U_0_0_2(1)) or 
	  (N_243 and DOUT_ALU_1_U_0_0_A7_1_0(1));
  U1_ADDSUB8: pmi_addsub_work_mico8_schematic_0 port map (
      DataA(0) => dout_rd(0),
      DataA(1) => dout_rd(1),
      DataA(2) => dout_rd(2),
      DataA(3) => dout_rd(3),
      DataA(4) => dout_rd(4),
      DataA(5) => dout_rd(5),
      DataA(6) => dout_rd(6),
      DataA(7) => dout_rd(7),
      DataB(0) => N_63,
      DataB(1) => N_55,
      DataB(2) => N_56,
      DataB(3) => N_57,
      DataB(4) => DATA_RB_INT_I_0_M2_I_M3_0(4),
      DataB(5) => N_59,
      DataB(6) => N_60,
      DataB(7) => N_61,
      Cin => ADSU_CI,
      Add_Sub => N_64_I,
      Result(0) => DATA_ADD(0),
      Result(1) => DATA_ADD(1),
      Result(2) => DATA_ADD(2),
      Result(3) => DATA_ADD(3),
      Result(4) => DATA_ADD(4),
      Result(5) => DATA_ADD(5),
      Result(6) => DATA_ADD(6),
      Result(7) => DATA_ADD(7),
      Cout => CARRY_ADD_INT,
      Overflow => OVERFLOW);
  NN_1 <= '0';
  VCC <= '1';
end beh;

--
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
library synplify;
use synplify.components.all;
library ecp2;
use ecp2.components.all;

entity isp8_idec is
port(
  Mico8_Instr_0 :  in std_logic;
  Mico8_Instr_2 :  in std_logic;
  Mico8_Instr_12 :  in std_logic;
  Mico8_Instr_1 :  in std_logic;
  Mico8_Instr_13 :  in std_logic;
  Mico8_Instr_17 :  in std_logic;
  Mico8_Instr_16 :  in std_logic;
  Mico8_Instr_15 :  in std_logic;
  Mico8_Instr_14 :  in std_logic;
  clri_i :  out std_logic;
  clrc :  out std_logic;
  setc :  out std_logic;
  setz :  out std_logic;
  update_c_i :  out std_logic;
  update_z_0 :  out std_logic;
  iels_ie :  out std_logic;
  iels_ls :  out std_logic;
  ca0 :  out std_logic;
  call :  out std_logic;
  instr_l2_1 :  in std_logic;
  iels :  out std_logic;
  iret :  out std_logic;
  update_z_1 :  out std_logic;
  N_36_1 :  out std_logic;
  un1_br0 :  out std_logic;
  re :  out std_logic;
  sub :  out std_logic;
  sc :  out std_logic;
  instr_l1_3 :  out std_logic;
  N_221 :  out std_logic;
  re_1 :  out std_logic;
  instr_l2_3 :  out std_logic;
  GND :  in std_logic);
end isp8_idec;

architecture beh of isp8_idec is
  signal INSTR_L1_3_INT_6 : std_logic ;
  signal RE_1_INT_8 : std_logic ;
  signal INSTR_L2_3_INT_9 : std_logic ;
  signal N_36_1_INT_4 : std_logic ;
  signal N_221_INT_7 : std_logic ;
  signal SC_INT_5 : std_logic ;
  signal NN_1 : std_logic ;
  signal VCC : std_logic ;
begin
  INSTR_L2_3_INT_9 <= Mico8_Instr_14 and Mico8_Instr_15;
  RE_1_INT_8 <= not Mico8_Instr_14 and Mico8_Instr_15;
  N_221_INT_7 <= not Mico8_Instr_16 and Mico8_Instr_17;
  INSTR_L1_3_INT_6 <= Mico8_Instr_16 and Mico8_Instr_17;
  SC_INT_5 <= Mico8_Instr_14 and Mico8_Instr_15 and not Mico8_Instr_16 and Mico8_Instr_17;
  sub <= not Mico8_Instr_14 and not Mico8_Instr_15 and not Mico8_Instr_16;
  re <= not Mico8_Instr_14 and Mico8_Instr_15 and Mico8_Instr_16 and Mico8_Instr_17;
  un1_br0 <= INSTR_L1_3_INT_6 and Mico8_Instr_13 and not Mico8_Instr_14 and not Mico8_Instr_15;
  N_36_1_INT_4 <= (Mico8_Instr_16) or 
	  (Mico8_Instr_14 and Mico8_Instr_17) or 
	  (Mico8_Instr_15 and Mico8_Instr_17);
  update_z_1 <= (not Mico8_Instr_15 and not Mico8_Instr_16) or 
	  (not Mico8_Instr_14 and not Mico8_Instr_16) or 
	  (Mico8_Instr_1 and not Mico8_Instr_16);
  iret <= RE_1_INT_8 and Mico8_Instr_12 and Mico8_Instr_16 and Mico8_Instr_17;
  iels <= INSTR_L1_3_INT_6 and not Mico8_Instr_13 and Mico8_Instr_14 and Mico8_Instr_15;
  call <= INSTR_L1_3_INT_6 and instr_l2_1 and Mico8_Instr_12 and Mico8_Instr_13;
  ca0 <= INSTR_L1_3_INT_6 and instr_l2_1 and not Mico8_Instr_12 and Mico8_Instr_13;
  iels_ls <= INSTR_L1_3_INT_6 and INSTR_L2_3_INT_9 and Mico8_Instr_2 and not Mico8_Instr_13;
  iels_ie <= INSTR_L1_3_INT_6 and INSTR_L2_3_INT_9 and not Mico8_Instr_2 and not Mico8_Instr_13;
  update_z_0 <= (not Mico8_Instr_14 and not Mico8_Instr_15 and Mico8_Instr_16) or 
	  (Mico8_Instr_17);
  update_c_i <= (N_36_1_INT_4 and not Mico8_Instr_1) or 
	  (N_36_1_INT_4 and not N_221_INT_7) or 
	  (N_36_1_INT_4 and INSTR_L2_3_INT_9);
  setz <= SC_INT_5 and Mico8_Instr_0 and Mico8_Instr_1 and not Mico8_Instr_2;
  setc <= SC_INT_5 and Mico8_Instr_0 and not Mico8_Instr_1 and not Mico8_Instr_2;
  clrc <= SC_INT_5 and not Mico8_Instr_0 and not Mico8_Instr_1 and not Mico8_Instr_2;
  clri_i <= (not Mico8_Instr_2) or 
	  (not SC_INT_5) or 
	  (Mico8_Instr_0) or 
	  (Mico8_Instr_1);
  NN_1 <= '0';
  VCC <= '1';
  N_36_1 <= N_36_1_INT_4;
  sc <= SC_INT_5;
  instr_l1_3 <= INSTR_L1_3_INT_6;
  N_221 <= N_221_INT_7;