-- Purpose: This package defines an alphabet of
-- digits from 0 to 9 and letters from A to Z. 
-- Each character is encoded by a 16x16 matrix.
-- Totally 10 digits + 26 letters + 1 space = 37 characters are defined. 


library IEEE;
use IEEE.STD_LOGIC_1164.all;

package Alphabet is

  type ROM is array (0 to 90, 0 to 15) of std_logic_vector(0 to 15);

-- Declare constants
constant alph_rom : ROM := ( 48 => ( "0111111111100000",	--0
					    		 "1111111111110000",
					    		 "1100000000110000",
					    		 "1100000000110000",
					     	 "1110000001110000",
					    		 "1100000000110000",
					    		 "1100000000110000",
					    		 "1100000000110000",
					    		 "1100000000110000",
					    		 "1100000000110000",
					   		 "1111111111110000",
					   		 "0111111111100000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000"),

					    49 => ( "0000000000110000",  --1
					   	 	 "0000000011110000",
					   		 "0000001111110000",
					   		 "0000111111111000",
					   		 "0011111101110000",
					   		 "0000010001110000",
					   		 "0000000001110000",
					   		 "0000000001110000",
					   		 "0000000001110000",
					   		 "0000000001110000",
					   		 "0000000001110000",
					   		 "0000000001110000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000"),

					    50 => ( "0111111111100000",  --2
					   		 "1111111111110000",
					      	 "1100000000110000",
					   		 "0000000000111000",
					   		 "0000000000110000",
					   		 "0111111111100000",
					   		 "1111111111100000",
					   		 "1110000000000000",
					   		 "1100000000000000",
					   		 "1110000000000000",
					   		 "1111111111100000",
					   		 "1111111111111000",
					   	 	 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000"),

					    51 => ( "0111111111110000",  --3
					   	 	 "1111111111110000",
					   		 "1100000011111000",
					   	 	 "0000000001111000",
					   		 "0000000011110000",
					   		 "1111111111110000",
					   		 "1111111111110000",
					   		 "0000000011111000",
					   		 "0000000001111000",
					   		 "1100000011110000",
					   		 "1111111111110000",
					   		 "0111111111110000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000"),

					    52 => ( "1110000000111000",  --4
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1111111111111000",
					   		 "1111111111111000",
					   		 "0000000000111000",
					   		 "0000000000111000",
					   		 "0000000000111000",
					   		 "0000000000111000",
					   		 "0000000000111000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000"),

					    53 => ( "1111111111111000",  --5
					   		 "1111111111111000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1111111111111000",
					   		 "1111111111111000",
					   		 "0000000000111000",
					   		 "0000000000111000",
					   		 "0000000000111000",
					   		 "1111111111111000",
					   		 "1111111111111000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000"),

					    54 => ( "1111111111111000",  --6
					   		 "1111111111111000",
					    		 "1110000000000000",
					   		 "1110000000000000",
					 		 "1110000000000000",
					  		 "1111111111111000",
					  		 "1111111111111000",
					  		 "1110000000111000",
					  		 "1110000000111000",
					  		 "1110000000111000",
					  		 "1111111111111000",
					  		 "1111111111111000",
					  		 "0000000000000000",
					  		 "0000000000000000",
					  		 "0000000000000000",
					  		 "0000000000000000"),

					    55 => ( "1111111111110000",  --7
					  		 "1111111111110000",
					  		 "0000000000110000",
					   		 "0000000001100000",
					   		 "0000000011000000",
					   		 "0000000110000000",
					   		 "0000001100000000",
					   		 "0000001100000000",
					   		 "0000001100000000",
					   		 "0000001100000000",
					   		 "0000001100000000",
					   		 "0000001100000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000"),

					    56 => ( "0111111111110000",  --8
					  		 "1111111111111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1111111111111000",
					   		 "1111111111111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   	 	 "1111111111111000",
					  		 "0111111111110000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000"),

					    57 => ( "1111111111111000",  --9
					   		 "1111111111111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1111111111111000",
					   		 "1111111111111000",
					   		 "0000000000111000",
					   		 "0000000000111000",
					   		 "0000000000111000",
					   		 "1111111111111000",
					   		 "1111111111111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   65 => ( "0000011000000000",  --A
					   		 "0000111100000000",
					   		 "0001111110000000",
					   		 "0011100111000000",
					   		 "0011100111000000",
					   		 "0011100111000000",
					   		 "0011100111000000",
					   		 "0111111111100000",
					   		 "0111111111100000",
					   		 "0111000001110000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   66 => ( "1111111110000000",  --B
					   		 "1110000011100000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000001110000",
					   		 "1111111110000000",
					   		 "1111111110000000",
					   		 "1110000001110000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000011100000",
					   		 "1111111111000000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   67 => ( "1111111111100000",  --C
					   		 "1111111111111000",
					   		 "1111000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1111000000000000",
					   		 "1111111111111000",
					   		 "1111111111100000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   68 => ( "1111110000000000",  --D
					   		 "1111111110000000",
					   		 "1110000111000000",
					   		 "1110000011100000",
					   		 "1110000001110000",
					   		 "1110000000111000",
					   		 "1110000001110000",
					   		 "1110000011100000",
					   		 "1110000011100000",
					   		 "1110000111000000",
					   		 "1111111110000000",
					   		 "1111110000000000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   69 => ( "1111111111100000",  --E
					   		 "1111111111111000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1111111100000000",
					   		 "1111111100000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1111111111111000",
					   		 "1111111111100000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   70 => ( "1111111111100000",  --F
					   		 "1111111111111000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1111111100000000",
					   		 "1111111100000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   71 => ( "1111111111100000",  --G
					   		 "1111111111111000",
					   		 "1111000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000111110000",
					   		 "1110000011100000",
					   		 "1110000001110000",
					   		 "1111000000111000",
					   		 "1111111111111000",
					   		 "1111111111100000",
					   		 "0000000000000000",
					  		 	"0000000000000000",
					   		 "0000000000000000",
					  		 	"0000000000000000"),

					   72 => ( "1110000000111000",  --H
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1111111111111000",
					   		 "1111111111111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   73 => ( "0011111111100000",  --I
					   		 "0000111110000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000111110000000",
					   		 "0011111111100000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   74 => ( "0000111111111000",  --J
					   		 "0000001111100000",
					   		 "0000000111000000",
					   		 "0000000111000000",
					   		 "0000000111000000",
					   		 "0000000111000000",
					   		 "0000000111000000",
					   		 "0000000111000000",
					   		 "1111000111000000",
					   		 "0111000111000000",
					   		 "0111111111000000",
					   		 "0011111110000000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   75 => ( "1110000000111000",  --K
					   		 "1110000001110000",
					   		 "1110001110000000",
					   		 "1110011100000000",
					   		 "1110111000000000",
					   		 "1111000000000000",
					   		 "1110111000000000",
					   		 "1110001110000000",
					   		 "1110000011100000",
					   		 "1110000001110000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   76 => ( "1110000000000000",  --L
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000011000",
					   		 "1111111111111000",
					   		 "1111111111111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   77 => ( "1110000000111000",  --M
					   		 "1111000001111000",
					   		 "1111000001111000",
					   		 "1111100011111000",
					   		 "1110111110111000",
					   		 "1110011100111000",
					   		 "1110011100111000",
					   		 "1110001000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   78 => ( "1111000000111000",  --N
					   		 "1111100000111000",
					   		 "1111110000111000",
					   		 "1110111000111000",
					   		 "1110011100111000",
					   		 "1110011100111000",
					   		 "1110001110111000",
					   		 "1110001110111000",
					   		 "1110000111111000",
					   		 "1110000011111000",
					   		 "1110000001111000",
					   		 "1110000000111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   79 => ( "0000111100000000",  --O
					   		 "0001111110000000",
					   		 "0111000011100000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "0111000011100000",
					   		 "0001111110000000",
					   		 "0000111100000000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   80 => ( "1111111111000000",  --P
					   		 "1111111111100000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000001110000",
					   		 "1111111111000000",
					   		 "1111111110000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "1110000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   81 => ( "0000111100000000",  --Q
					   		 "0001111110000000",
					   		 "0111000011100000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110001110111000",
					   		 "0111000111100000",
					   		 "0001111110111000",
					   		 "0000111100011000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   82 => ( "1111111111000000",  --R
					   		 "1111111111100000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000001110000",
					   		 "1111111111000000",
					   		 "1111111110000000",
					   		 "1110111100000000",
					   		 "1110011110000000",
					   		 "1110000111100000",
					   		 "1110000001111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   83 => ( "0000111111110000",  --S
					   		 "0111111111111000",
					   		 "1111000000011000",
					   		 "1110000000000000",
					   		 "0011110000000000",
					   		 "0000111100000000",
					   		 "0000000111111000",
					   		 "0000000011111000",
					   		 "0000000000111000",
					   		 "1100000000111000",
					   		 "1110000111100000",
					   		 "0111111111100000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   84 => ( "1111111111111000",  --T
					   		 "1111111111111000",
					   		 "1000111110001000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000111110000000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   85 => ( "1111000001111000",  --U
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "0111000001110000",
					   		 "0111000001110000",
					   		 "0111000001110000",
					   		 "0111000001110000",
					   		 "0111111111110000",
					   		 "0111111111110000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   86 => ( "1110000000111000",  --V
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "0111000001110000",
					   		 "0111000001110000",
					   		 "0011100011100000",
					   		 "0011100011100000",
					   		 "0001110111000000",
					   		 "0001110111000000",
					   		 "0001110111000000",
					   		 "0000111110000000",
					   		 "0000011100000000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   87 => ( "1110000000111000",  --W
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110000000111000",
					   		 "1110001000111000",
					   		 "1110011100111000",
					   		 "1110011100111000",
					   		 "1110110110111000",
					   		 "1111100011111000",
					   		 "1111000001111000",
					   		 "1111000001111000",
					   		 "1110000000111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   88 => ( "1110000000111000",  --X
					   		 "0111000001110000",
					   		 "0011100011100000",
					   		 "0001110111000000",
					   		 "0000111110000000",
					   		 "0000011100000000",
					   		 "0000001110000000",
					   		 "0000111110000000",
					   		 "0001110111000000",
					   		 "0011100011100000",
					   		 "0111000001110000",
					   		 "1110000000111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   89 => ( "1110000000111000",  --Y
					   		 "0111000001110000",
					   		 "0111000001110000",
					   		 "0011100011100000",
					   		 "0001110111000000",
					   		 "0000111110000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000011100000000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   90 => ( "1111111111111000",  --Z
					   		 "1111111111111000",
					   		 "1000000000111000",
					   		 "0000000001110000",
					   		 "0000000111000000",
					   		 "0000001110000000",
					   		 "0000111000000000",
					   		 "0001110000000000",
					   		 "0111000000000000",
					   		 "1110000000001000",
					   		 "1111111111111000",
					   		 "1111111111111000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

					   32 => ( "0000000000000000",  --space
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000",
					   		 "0000000000000000",
					  		 "0000000000000000"),

						others => (others => (others => '0')) );

end Alphabet;


package body Alphabet is
 
end Alphabet;