start_re.vhd

破解des算法的程序

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-- Author          :  Tom Vu                                     
-- Date            :  09/19/97                                  
-- Description	   :  UProcessor interface
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library ieee;
use IEEE.std_logic_1164.all;
use IEEE.std_logic_arith.all;
use IEEE.std_logic_unsigned.all;
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entity START_REG is

port(   RST_N           : in     std_logic;
        CHIP_EN       	: in     std_logic;
        WRB          	: in     std_logic;
        ADDSEL2        	: in     std_logic;
        ADDR       	: in     std_logic_vector(7 downto 0);
        CLEAR_SEARCH    : in     std_logic_vector(23 downto 0);

        SEARCH_IN    	: OUT     std_logic_vector(23 downto 0);
        DATAI       	: in     std_logic_vector(7 downto 0)
    );


end START_REG;

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architecture beh of START_REG is
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signal SEARCH_IN_REG 	: std_logic_vector(23  downto 0);
signal SEARCH_RST_N_0 	: std_logic;
signal SEARCH_RST_N_1 	: std_logic;
signal SEARCH_RST_N_2 	: std_logic;
signal SEARCH_RST_N_3 	: std_logic;
signal SEARCH_RST_N_4 	: std_logic;
signal SEARCH_RST_N_5 	: std_logic;
signal SEARCH_RST_N_6 	: std_logic;
signal SEARCH_RST_N_7 	: std_logic;
signal SEARCH_RST_N_8 	: std_logic;
signal SEARCH_RST_N_9 	: std_logic;
signal SEARCH_RST_N_10 	: std_logic;
signal SEARCH_RST_N_11 	: std_logic;
signal SEARCH_RST_N_12 	: std_logic;
signal SEARCH_RST_N_13 	: std_logic;
signal SEARCH_RST_N_14 	: std_logic;
signal SEARCH_RST_N_15 	: std_logic;
signal SEARCH_RST_N_16 	: std_logic;
signal SEARCH_RST_N_17 	: std_logic;
signal SEARCH_RST_N_18 	: std_logic;
signal SEARCH_RST_N_19 	: std_logic;
signal SEARCH_RST_N_20 	: std_logic;
signal SEARCH_RST_N_21 	: std_logic;
signal SEARCH_RST_N_22 	: std_logic;
signal SEARCH_RST_N_23 	: std_logic;

begin

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SEARCH_IN0_PR: process(SEARCH_RST_N_0, WRB)
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begin   
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if (SEARCH_RST_N_0 = '0') then
	SEARCH_IN_REG(0) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "01000111")) then
	SEARCH_IN_REG(0) <= DATAI(0);
else
	SEARCH_IN_REG(0) <= SEARCH_IN_REG(0);
end if;  
end if;  
----------------------------------------------------------------
end process SEARCH_IN0_PR;
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SEARCH_IN1_PR: process(SEARCH_RST_N_1, WRB)
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begin   
if (SEARCH_RST_N_1 = '0') then
	SEARCH_IN_REG(1) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "01001111")) then
	SEARCH_IN_REG(1) <= DATAI(0);
end if;  
end if;  
----------------------------------------------------------------
end process SEARCH_IN1_PR;
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SEARCH_IN2_PR: process(SEARCH_RST_N_2, WRB)
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begin   
if (SEARCH_RST_N_2 = '0') then
	SEARCH_IN_REG(2) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "01010111")) then
	SEARCH_IN_REG(2) <= DATAI(0);
end if;  
end if;  
----------------------------------------------------------------
end process SEARCH_IN2_PR;
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SEARCH_IN3_PR: process(SEARCH_RST_N_3, WRB)
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begin   
if (SEARCH_RST_N_3 = '0') then
	SEARCH_IN_REG(3) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "01011111")) then
	SEARCH_IN_REG(3) <= DATAI(0);
end if;  
end if;  
----------------------------------------------------------------
end process SEARCH_IN3_PR;
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SEARCH_IN4_PR: process(SEARCH_RST_N_4, WRB)
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begin   
if (SEARCH_RST_N_4 = '0') then
	SEARCH_IN_REG(4) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "01100111")) then
	SEARCH_IN_REG(4) <= DATAI(0);
end if;  
end if;  
----------------------------------------------------------------
end process SEARCH_IN4_PR;
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SEARCH_IN5_PR: process(SEARCH_RST_N_5, WRB)
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begin   
if (SEARCH_RST_N_5 = '0') then
	SEARCH_IN_REG(5) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "01101111")) then
	SEARCH_IN_REG(5) <= DATAI(0);
end if;  
end if;  
----------------------------------------------------------------
end process SEARCH_IN5_PR;
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SEARCH_IN6_PR: process(SEARCH_RST_N_6, WRB)
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begin   
if (SEARCH_RST_N_6 = '0') then
	SEARCH_IN_REG(6) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "01110111")) then
	SEARCH_IN_REG(6) <= DATAI(0);
end if;  
end if;  
----------------------------------------------------------------
end process SEARCH_IN6_PR;
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SEARCH_IN7_PR: process(SEARCH_RST_N_7, WRB)
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begin   
if (SEARCH_RST_N_7 = '0') then
	SEARCH_IN_REG(7) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "01111111")) then
	SEARCH_IN_REG(7) <= DATAI(0);
end if;  
end if;  
----------------------------------------------------------------
end process SEARCH_IN7_PR;
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SEARCH_IN8_PR: process(SEARCH_RST_N_8, WRB)
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begin   
if (SEARCH_RST_N_8 = '0') then
	SEARCH_IN_REG(8) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "10000111")) then
	SEARCH_IN_REG(8) <= DATAI(0);
end if;  
end if;  
----------------------------------------------------------------
end process SEARCH_IN8_PR;
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SEARCH_IN9_PR: process(SEARCH_RST_N_9, WRB)
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begin   
if (SEARCH_RST_N_9 = '0') then
	SEARCH_IN_REG(9) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "10001111")) then
	SEARCH_IN_REG(9) <= DATAI(0);
end if;  
end if;  
----------------------------------------------------------------
end process SEARCH_IN9_PR;
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SEARCH_IN10_PR: process(SEARCH_RST_N_10, WRB)
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begin   
if (SEARCH_RST_N_10 = '0') then
	SEARCH_IN_REG(10) <= '0';
elsif (WRB'event and WRB= '1') then
if ((CHIP_EN = '1') and (ADDSEL2 = '0') and (ADDR = "10010111")) then
	SEARCH_IN_REG(10) <= DATAI(0);
end if;  
end if;  
----------------------------------------------------------------