以下8选一程序用到WORK1库，不知道怎样才能通过编译产生符号。
library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.std_logic_arith.all;
use IEEE.std_logic_unsigned.all;
library WORK1;
use WORK1.SER_PAR_LIB.all;
entity MUX_8X1 is
port (
DIN: in STD_LOGIC_VECTOR(7 downto 0);
SEL: in STD_LOGIC_VECTOR(2 downto 0);
MUXOUT: out STD_LOGIC
);
end MUX_8X1;
architecture MUX_8X1_arch of MUX_8X1 is
begin
with SEL select
MUXOUT <= DIN(0) when "000",
DIN(1) when "001",
DIN(2) when "010",
DIN(3) when "011",
DIN(4) when "100",
DIN(5) when "101",
DIN(6) when "110",
DIN(7) when others;
end MUX_8X1_arch; |
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