求问关于VHDL语言的问题

2024-12-03 19:28:47
推荐回答(2个)
回答(1):

library ieee;use ieee.std_logic_1164.all;use ieee.std_logic_unsigned.all;entity COUNT isport(clk6406reset:in std_logic;         result:out std_logic_vector(3 downto 0));end entity;architecture art of count isbegin  process(clkimreset)  variable data:std_logic_vector(3 downto 0);   begin      if reset='1' then        data:="0000";     elsif clk'event and clk='1' then        if data="1001" then           data:="0000";       else data:=data+1;       end if;      end if;     result<=data;  end process;end art;

回答(2):

TYPE u32 IS RANGE 4294967295 DOWNTO 0;
TYPE A8 IS ARRAY (7 DOWNTO 0) OF u32;
TYPE A4 IS ARRAY (3 DOWNTO 0) OF u32;
TYPE ECRYPT_ctx IS RECORD
state: A8;
carry: A8;
filfer: A8;
init: A4;
EDN RECORD;