sysid.vhd

来自「nois 2cpu 硬件实现编程」· VHDL 代码 · 共 46 行

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-- turn off superfluous VHDL processor warnings 
-- altera message_level Level1 
-- altera message_off 10034 10035 10036 10037 10230 10240 10030 

library altera;
use altera.altera_europa_support_lib.all;

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;

entity sysid is 
        port (
              -- inputs:
                 signal address : IN STD_LOGIC;

              -- outputs:
                 signal readdata : OUT STD_LOGIC_VECTOR (31 DOWNTO 0)
              );
end entity sysid;


architecture europa of sysid is

begin

  --control_slave, which is an e_avalon_slave
  readdata <= A_WE_StdLogicVector((std_logic'(address) = '1'), std_logic_vector'("01000101011010111010011100011100"), std_logic_vector'("10110100101011011010000011001000"));

end europa;