lcm.vhd

代码是12864的vhdl驱动程序 并带有字库

                                   data:="00000010";
                             WHEN "010000" =>
                                   data:="00000100";
                             WHEN "010001" =>
                                   data:="00000100";
                             WHEN "010010" =>
                                   data:="00010100";
                             WHEN "010011" =>
                                   data:="10100100";
                             WHEN "010100" =>
                                   data:="00000100";
                             WHEN "010101" =>
                                   data:="01100100";
                             WHEN "010110" =>
                                   data:="00110101";
                             WHEN "010111" =>
                                   data:="10101110";
                             WHEN "011000" =>
                                   data:="01100100";
                             WHEN "011001" =>
                                   data:="00100100";
                             WHEN "011010" =>
                                   data:="00010100";
                             WHEN "011011" =>
                                   data:="10100100";
                             WHEN "011100" =>
                                   data:="00010100";
                             WHEN "011101" =>
                                   data:="00000100";
                             WHEN "011110" =>
                                   data:="00000100";
                             WHEN OTHERS =>
                                   data:="00000000";
                             END CASE;
                         WHEN "011" => 
                           CASE y_cnt IS
                             WHEN "000000" => --the 1st column
                                   data:="01000100";
                             WHEN "000001" => --the 2nd column
                                   data:="01000011";
                             WHEN "000010" => --the 3rd column
                                   data:="00100000";
                             WHEN "000011" =>
                                   data:="00010000";
                             WHEN "000100" =>
                                   data:="00001011";
                             WHEN "000101" =>
                                   data:="00000100";
                             WHEN "000110" =>
                                   data:="01000011";
                             WHEN "000111" =>
                                   data:="01000000";
                             WHEN "001000" =>
                                   data:="00100111";
                             WHEN "001001" =>
                                   data:="00011000";
                             WHEN "001010" =>
                                   data:="00000111";
                             WHEN "001011" =>
                                   data:="00001000";
                             WHEN "001100" =>
                                   data:="00010000";
                             WHEN "001101" =>
                                   data:="00100111";
                             WHEN "001110" =>
                                   data:="01100000";
                             WHEN "010000" =>
                                   data:="00001000";
                             WHEN "010001" =>
                                   data:="00001010";
                             WHEN "010010" =>
                                   data:="00001001";
                             WHEN "010011" =>
                                   data:="00001000";
                             WHEN "010100" =>
                                   data:="00001000";
                             WHEN "010101" =>
                                   data:="00001010";
                             WHEN "010110" =>
                                   data:="00001011";
                             WHEN "010111" =>
                                   data:="11111110";
                             WHEN "011000" =>
                                   data:="00001010";
                             WHEN "011001" =>
                                   data:="00001011";
                             WHEN "011010" =>
                                   data:="00001100";
                             WHEN "011011" =>
                                   data:="00001000";
                             WHEN "011100" =>
                                   data:="00001001";
                             WHEN "011101" =>
                                   data:="00001010";
                             WHEN "011110" =>
                                   data:="00001000";
                             WHEN OTHERS =>
                                   data:="00000000";
                             END CASE;
                         WHEN "100" => 
                           CASE y_cnt IS
                             WHEN "000001" => --the 2st column
                                   data:="11110010";
                             WHEN "000010" => --the 3rd column
                                   data:="00010010";
                             WHEN "000011" =>
                                   data:="00010010";
                             WHEN "000100" =>
                                   data:="00011110";
                             WHEN "000110" =>
                                   data:="11000000";
                             WHEN "000111" =>
                                   data:="01011110";
                             WHEN "001000" =>
                                   data:="01010010";
                             WHEN "001001" =>
                                   data:="11110010";
                             WHEN "001010" =>
                                   data:="01010010";
                             WHEN "001011" =>
                                   data:="01010010";
                             WHEN "001100" =>
                                   data:="01011110";
                             WHEN "001101" =>
                                   data:="11000000";
                             WHEN "010010" =>
                                   data:="11111100";
                             WHEN "010011" =>
                                   data:="00000100";
                             WHEN "010100" =>
                                   data:="00100100";
                             WHEN "010101" =>
                                   data:="00100100";
                             WHEN "010110" =>
                                   data:="11111100";
                             WHEN "010111" =>
                                   data:="10100101";
                             WHEN "011000" =>
                                   data:="10100110";
                             WHEN "011001" =>
                                   data:="10100100";
                             WHEN "011010" =>
                                   data:="11111100";
                             WHEN "011011" =>
                                   data:="00100100";
                             WHEN "011100" =>
                                   data:="00100100";
                             WHEN "011101" =>
                                   data:="00100100";
                             WHEN "011110" =>
                                   data:="00000100";
                             WHEN OTHERS =>
                                   data:="00000000";
                             END CASE;
                         WHEN "101" => 
                           CASE y_cnt IS
                             WHEN "000001" => --the 2st column
                                   data:="00000001";
                             WHEN "000010" => --the 3rd column
                                   data:="01000001";
                             WHEN "000011" =>
                                   data:="10000001";
                             WHEN "000100" =>
                                   data:="01111111";
                             WHEN "000110" =>
                                   data:="10000111";
                             WHEN "000111" =>
                                   data:="10000100";
                             WHEN "001000" =>
                                   data:="10000100";
                             WHEN "001001" =>
                                   data:="11111111";
                             WHEN "001010" =>
                                   data:="01000100";
                             WHEN "001011" =>
                                   data:="01000100";
                             WHEN "001100" =>
                                   data:="01010100";
                             WHEN "001101" =>
                                   data:="11100111";
                             WHEN "001110" =>
                                   data:="01000000";
                             WHEN "010000" =>
                                   data:="10000000";
                             WHEN "010001" =>
                                   data:="01100000";
                             WHEN "010010" =>
                                   data:="00011111";
                             WHEN "010011" =>
                                   data:="10000000";
                             WHEN "010100" =>
                                   data:="10000000";
                             WHEN "010101" =>
                                   data:="01000010";
                             WHEN "010110" =>
                                   data:="01000110";
                             WHEN "010111" =>
                                   data:="00101010";
                             WHEN "011000" =>
                                   data:="00010010";
                             WHEN "011001" =>
                                   data:="00010010";
                             WHEN "011010" =>
                                   data:="00101010";
                             WHEN "011011" =>
                                   data:="00100110";
                             WHEN "011100" =>
                                   data:="11000000";
                             WHEN "011101" =>
                                   data:="01000000";
                             WHEN OTHERS =>
                                   data:="00000000";
                             END CASE;
                         WHEN OTHERS =>
                             data:="00000000";
                       END CASE;
                 
                      END IF;
                      END CASE;
                      END CASE;
                      END IF;
                      END PROCESS;
                      END a;