library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
library exemplar;
use exemplar.exemplar_1164.ALL;
。。。
attribute pin_number of nGCS1 : signal is "p8";
。。。
错误信息是这样的：
ERROR:HDLParsers:3317 - "D:/lllllllllll/cpld/test/123.vhd" Line 6. Library exemplar cannot be found.
ERROR:HDLParsers:3013 - "D:/lllllllllll/cpld/test/123.vhd" Line 7. Library exemplar is not declared.
ERROR: XST failed
