2 use IEEE.std_logic_1164.all;
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3 use IEEE.numeric_std.all;
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5 --use work.math_pkg.all;
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6 use work.common_pkg.all;
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7 use work.core_pkg.all;
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9 use work.mem_pkg.all;
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10 use work.extension_pkg.all;
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11 use work.extension_7seg_pkg.all;
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13 architecture behav of extension_7seg is
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15 signal s_state, s_state_nxt : sseg_state_rec;
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16 signal ext_reg_r : extmod_rec;
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20 seg_syn: process(sys_clk, sys_res_n)
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24 if (sys_res_n = RESET_VALUE) then
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26 s_state.digit0 <= (others => '0');--set(0,7);
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27 s_state.digit1 <= (others => '0');--set(0,7);
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28 s_state.digit2 <= (others => '0');--set(0,7);
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29 s_state.digit3 <= (others => '0');--set(0,7);
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31 ext_reg_r.sel <='0';
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32 ext_reg_r.wr_en <= '0';
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33 ext_reg_r.byte_en <= (others => '0');
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34 ext_reg_r.data <= (others => '0');
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35 ext_reg_r.addr <= (others => '0');
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37 elsif rising_edge(sys_clk) then
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39 s_state <= s_state_nxt;
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40 ext_reg_r <= ext_reg;
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46 seg_asyn: process(s_state, ext_reg_r)
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49 s_state_nxt <= s_state;
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51 if ext_reg_r.sel = '1' and ext_reg_r.wr_en = '1' then
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54 case ext_reg_r.byte_en(1 downto 0) is
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56 s_state_nxt.digit0 <= digit_decode('0' & ext_reg_r.data(3 downto 0));
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57 s_state_nxt.digit1 <= digit_decode('0' & ext_reg_r.data(7 downto 4));
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58 s_state_nxt.digit2 <= digit_decode('0' & ext_reg_r.data(11 downto 8));
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59 s_state_nxt.digit3 <= digit_decode('0' & ext_reg_r.data(15 downto 12));
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61 s_state_nxt.digit0 <= (others => '1');
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62 s_state_nxt.digit1 <= (others => '1');
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63 s_state_nxt.digit2 <= (others => '1');
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64 s_state_nxt.digit3 <= (others => '1');
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70 end process; --ps2_next
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72 seg_out: process(s_state)
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75 o_digit0 <= not(s_state.digit0);
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76 o_digit1 <= not(s_state.digit1);
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77 o_digit2 <= not(s_state.digit2);
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78 o_digit3 <= not(s_state.digit3);
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