-- Interactive Audio Manipulation Processor
--
-- file: count_xy.vhd
-- status: simulated - no known bugs
--
-- author: see reference [7]
--
-- Except for this header, this file is a verbatim copy of count_xy.vhd
-- from the EE552 Dicerace project application notes. See References section
-- of report (reference [7]) and this URL:
-- http://www.ee.ualberta.ca~elliott/ee552/studentAppnotes/1998_w/dicerace_video_display/

LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.all;
USE IEEE.STD_LOGIC_ARITH.all;
USE IEEE.STD_LOGIC_UNSIGNED.all;

ENTITY count_xy IS
	PORT(
	clock						: in STD_LOGIC;
	countX,countY               : out STD_LOGIC_VECTOR(9 downto 0);
	HSync,VSync		            : in BOOLEAN	
);
END count_xy;
	
ARCHITECTURE counting of count_xy IS

SIGNAL countlocX, countlocY           : STD_LOGIC_VECTOR( 9 downto 0);
--SIGNAL     HSync,VSync		          : BOOLEAN;

--------------------------------------------------------------------------------------------

BEGIN

counting: process(clock)
BEGIN
 
IF clock'EVENT and clock = '1' THEN
	IF   HSync  THEN
		countlocX <= "0000000000";
	ELSE
		countlocX <= countlocX + '1';
	END IF;
	
	IF    VSync  THEN
		countlocY <= "0000000000";
	ELSIF HSync THEN
		countlocY <= countlocY + '1';
	END IF;

    countX <= countlocX;
    countY <= countlocY;

END IF;

END process counting;
-------------------------------------------------------- 

END counting;