发表于 2011-07-03 09:49 IP属地：未知
Benz=Luxury car
Bmw =Sport car
Audi=Luxury vw
Vw= piece of junk
Case closed
ARCHITECTURE behave OF block_A IS
CONSTANT MERCEDES : STD_LOGIC_VECTOR (1 DOWNTO 0) := b"00";
CONSTANT BMW : STD_LOGIC_VECTOR (1 DOWNTO 0) := b"01";
CONSTANT AUDI : STD_LOGIC_VECTOR (1 DOWNTO 0) := b"10";
CONSTANT VOLKSWAGEN : STD_LOGIC_VECTOR (1 DOWNTO 0) := b"11";
VARIABLE characteristic : STRING(1 TO 13);
BEGIN
PROCESS(brand)
BEGIN
CASE brand is
WHEN MERCEDES => characteristic := "___Luxury_car" ;
WHEN BMW => characteristic := "____Sport_car" ;
WHEN AUDI => characteristic := "____Luxury_vw" ;
WHEN VOLKSWAGEN => characteristic := "piece_of_junk" ;
end CASE;
end PROCESS;
end behave;
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本帖最后由 barbaresco 于 2011-7-3 09:50 编辑 ]
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