1 files changed, 40 insertions, 0 deletions
diff --git a/basys3/basys3.srcs/ppu_comp_tb.vhd b/basys3/basys3.srcs/ppu_comp_tb.vhd
new file mode 100644
index 0000000..be4c2e3
--- /dev/null
+++ b/basys3/basys3.srcs/ppu_comp_tb.vhd
@@ -0,0 +1,40 @@
+library ieee;
+library unisim;
+use ieee.std_logic_1164.all;
+use work.ppu_consts.all;
+use unisim.vcomponents.all;
+
+entity ppu_comp_tb is
+end ppu_comp_tb;
+
+architecture behavioral of ppu_comp_tb is
+	component ppu_comp port (
+		FG_HIT : in std_logic_vector(PPU_FG_SPRITE_COUNT-1 downto 0);
+		BG_EN : out std_logic;
+		FG_EN : out std_logic_vector(PPU_FG_SPRITE_COUNT-1 downto 0));
+	end component;
+	signal FG_HIT : std_logic_vector(PPU_FG_SPRITE_COUNT-1 downto 0) := (others => '0');
+	signal BG_EN : std_logic := '0';
+	signal FG_EN : std_logic_vector(PPU_FG_SPRITE_COUNT-1 downto 0) := (others => '0');
+begin
+	uut : ppu_comp port map (
+		FG_HIT => FG_HIT,
+		BG_EN => BG_EN,
+		FG_EN => FG_EN
+	);
+	tb : process
+	begin
+		FG_HIT <= (others => '0');
+		wait for 1 ps;
+		FG_HIT(6) <= '1';
+		FG_HIT(5) <= '1';
+		FG_HIT(100) <= '1';
+		wait for 1 ps;
+
+		FG_HIT(0) <= '1';
+		wait for 1 ps;
+		FG_HIT <= (others => '0');
+		wait for 1 ps;
+		wait;
+	end process;
+end Behavioral;