From 9f38ab7fd66698c43b78b508eebc85730ba114b8 Mon Sep 17 00:00:00 2001
From: lonkaars <loek@pipeframe.xyz>
Date: Wed, 29 Mar 2023 17:42:07 +0200
Subject: update pipeline

---
 basys3/basys3.srcs/ppu.vhd             |  45 +--
 basys3/basys3.srcs/ppu_comp.vhd        |  24 +-
 basys3/basys3.srcs/ppu_consts.vhd      |   1 -
 basys3/basys3.srcs/ppu_dispctl.vhd     |   4 +-
 basys3/basys3.srcs/ppu_pceg.vhd        |  60 ++--
 basys3/basys3.srcs/ppu_pceg_consts.vhd |  18 ++
 basys3/basys3.srcs/ppu_pceg_tb.vhd     |  17 +-
 basys3/basys3.srcs/ppu_sprite_bg.vhd   |  46 ++-
 basys3/basys3.srcs/ppu_sprite_fg.vhd   |  31 +-
 basys3/basys3.xpr                      |  23 +-
 basys3/ppu_tb_behav.wcfg               | 505 +++++++++++++++++++++++++++++++++
 11 files changed, 659 insertions(+), 115 deletions(-)
 create mode 100644 basys3/basys3.srcs/ppu_pceg_consts.vhd
 create mode 100644 basys3/ppu_tb_behav.wcfg

(limited to 'basys3')

diff --git a/basys3/basys3.srcs/ppu.vhd b/basys3/basys3.srcs/ppu.vhd
index 0955506..c6864df 100644
--- a/basys3/basys3.srcs/ppu.vhd
+++ b/basys3/basys3.srcs/ppu.vhd
@@ -3,6 +3,7 @@ library work;
 
 use ieee.std_logic_1164.all;
 use work.ppu_consts.all;
+use work.ppu_pceg_consts.all;
 
 entity ppu is port(
 	CLK100 : in std_logic; -- system clock
@@ -16,12 +17,11 @@ entity ppu is port(
 end ppu;
 
 architecture Behavioral of ppu is
-	-- TODO: separate SPRITE_BG and SPRITE_FG lines (foreground_sprite only needs 2 clock cycles)
-	component ppu_pceg port( -- pipeline clock edge generator
+	component ppu_pceg port(
 		CLK : in std_logic; -- system clock
 		RESET : in std_logic; -- async reset
-		SPRITE_BG : out std_logic; -- sprite info fetch + sprite pixel fetch
-		SPRITE_FG : out std_logic; -- sprite pixel fetch
+		SPRITE_BG : out ppu_sprite_bg_pl_state := PL_BG_IDLE; -- sprite info fetch + sprite pixel fetch
+		SPRITE_FG : out ppu_sprite_fg_pl_state := PL_FG_IDLE; -- sprite pixel fetch
 		DONE : out std_logic; -- last pipeline stage done
 		READY : out std_logic); -- rgb buffer propagation ready
 	end component;
@@ -79,9 +79,9 @@ architecture Behavioral of ppu is
 	end component;
 	component ppu_sprite_bg port( -- background sprite
 		-- inputs
-		CLK : in std_logic; -- pipeline clock
+		CLK : in std_logic; -- system clock
 		RESET : in std_logic; -- reset clock counter
-		PL_RESET : in std_logic; -- reset pipeline clock counters
+		PL_STAGE : in ppu_sprite_bg_pl_state; -- pipeline stage
 		OE : in std_logic; -- output enable (of CIDX)
 		X : in std_logic_vector(PPU_POS_H_WIDTH-1 downto 0); -- current screen pixel x
 		Y : in std_logic_vector(PPU_POS_V_WIDTH-1 downto 0); -- current screen pixel y
@@ -106,8 +106,7 @@ architecture Behavioral of ppu is
 			-- inputs
 			CLK : in std_logic; -- system clock
 			RESET : in std_logic; -- reset internal memory and clock counters
-			PL_CLK : in std_logic; -- pipeline clock
-			PL_RESET : in std_logic; -- reset pipeline clock counters
+			PL_STAGE : in ppu_sprite_fg_pl_state; -- pipeline stage
 			OE : in std_logic; -- output enable (of CIDX)
 			X : in std_logic_vector(PPU_POS_H_WIDTH-1 downto 0); -- current screen pixel x
 			Y : in std_logic_vector(PPU_POS_V_WIDTH-1 downto 0); -- current screen pixel y
@@ -128,9 +127,10 @@ architecture Behavioral of ppu is
 			HIT : out std_logic); -- current pixel is not transparent
 	end component;
 	component ppu_comp port( -- compositor
-		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));
+		OE : in std_logic; -- global output enable (screen active)
+		FG_HIT : in std_logic_vector(PPU_FG_SPRITE_COUNT-1 downto 0); -- foreground hit array
+		BG_EN : out std_logic; -- background enable output
+		FG_EN : out std_logic_vector(PPU_FG_SPRITE_COUNT-1 downto 0)); -- foreground enable output
 	end component;
 	component ppu_plut port( -- palette lookup table
 		CLK : in std_logic; -- system clock
@@ -155,12 +155,15 @@ architecture Behavioral of ppu is
 
 		RO,GO,BO : out std_logic_vector(PPU_COLOR_OUTPUT_DEPTH-1 downto 0); -- VGA color out
 		NVSYNC, NHSYNC : out std_logic; -- VGA sync out
-		THBLANK, TVBLANK : out std_logic); -- tiny sync signals
+		THBLANK, TVBLANK : out std_logic; -- tiny sync signals
+		ACTIVE : out std_logic); -- screen currently active (currently same for tiny/native, TODO: offset tiny for first scanline)
 	end component;
 
 	-- signals
 	signal SYSCLK, SYSRST : std_logic; -- system clock and reset
-	signal PL_SPRITE_FG, PL_SPRITE_BG, PL_DONE, PL_READY : std_logic; -- pipeline stages
+	signal PL_DONE, PL_READY : std_logic; -- pipeline stages
+	signal PL_SPRITE_BG : ppu_sprite_bg_pl_state;
+	signal PL_SPRITE_FG : ppu_sprite_fg_pl_state;
 	signal TMM_WEN, BAM_WEN, FAM_WEN, PAL_WEN, AUX_WEN : std_logic;
 	signal TMM_W_ADDR, TMM_R_ADDR : std_logic_vector(PPU_TMM_ADDR_WIDTH-1 downto 0); -- read/write TMM addr (dual port)
 	signal BAM_W_ADDR, BAM_R_ADDR : std_logic_vector(PPU_BAM_ADDR_WIDTH-1 downto 0); -- read/write BAM addr (dual port)
@@ -179,6 +182,7 @@ architecture Behavioral of ppu is
 	signal BG_SHIFT_Y : std_logic_vector(PPU_POS_V_WIDTH-1 downto 0);
 	signal FG_FETCH : std_logic;
 	signal NVSYNC, NHSYNC, THBLANK, TVBLANK : std_logic;
+	signal ACTIVE : std_logic;
 	signal PCEG_RESET : std_logic;
 begin
 	SYSCLK <= CLK100;
@@ -187,12 +191,12 @@ begin
 	VSYNC <= NVSYNC;
 	HSYNC <= NHSYNC;
 
-	PCEG_RESET <= SYSRST or THBLANK;
+	PCEG_RESET <= SYSRST or (not ACTIVE);
 	VBLANK <= TVBLANK;
 
 	pipeline_clock_edge_generator : component ppu_pceg port map(
 		CLK => SYSCLK,
-		RESET => SYSRST,
+		RESET => PCEG_RESET,
 		SPRITE_FG => PL_SPRITE_FG,
 		SPRITE_BG => PL_SPRITE_BG,
 		DONE => PL_DONE,
@@ -246,9 +250,9 @@ begin
 		FG_FETCH => FG_FETCH);
 
 	background_sprite : component ppu_sprite_bg port map(
-		CLK => PL_SPRITE_BG,
+		CLK => SYSCLK,
 		RESET => SYSRST,
-		PL_RESET => PL_READY,
+		PL_STAGE => PL_SPRITE_BG,
 		OE => BG_EN,
 		X => X,
 		Y => Y,
@@ -266,8 +270,7 @@ begin
 			port map(
 				CLK => SYSCLK,
 				RESET => SYSRST,
-				PL_CLK => PL_SPRITE_FG,
-				PL_RESET => PL_READY,
+				PL_STAGE => PL_SPRITE_FG,
 				OE => FG_EN(FG_IDX),
 				X => X,
 				Y => Y,
@@ -283,6 +286,7 @@ begin
 	end generate;
 
 	compositor : component ppu_comp port map( -- compositor
+		OE => ACTIVE,
 		FG_HIT => FG_HIT,
 		BG_EN => BG_EN,
 		FG_EN => FG_EN);
@@ -313,5 +317,6 @@ begin
 		NVSYNC => NVSYNC,
 		NHSYNC => NHSYNC,
 		TVBLANK => TVBLANK,
-		THBLANK => THBLANK);
+		THBLANK => THBLANK,
+		ACTIVE => ACTIVE);
 end Behavioral;
diff --git a/basys3/basys3.srcs/ppu_comp.vhd b/basys3/basys3.srcs/ppu_comp.vhd
index e79738f..30b161c 100644
--- a/basys3/basys3.srcs/ppu_comp.vhd
+++ b/basys3/basys3.srcs/ppu_comp.vhd
@@ -2,35 +2,41 @@ library ieee;
 use ieee.std_logic_1164.all;
 use work.ppu_consts.all;
 
-entity ppu_comp is 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));
+entity ppu_comp is port (
+	OE : in std_logic; -- global output enable (screen active)
+	FG_HIT : in std_logic_vector(PPU_FG_SPRITE_COUNT-1 downto 0); -- foreground hit array
+	BG_EN : out std_logic; -- background enable output
+	FG_EN : out std_logic_vector(PPU_FG_SPRITE_COUNT-1 downto 0)); -- foreground enable output
 end ppu_comp;
 
 architecture Behavioral of ppu_comp is
 	signal FG_HIT_EMPTY : std_logic_vector(PPU_FG_SPRITE_COUNT-1 downto 0) := (others => '0');
+	signal TMP_BG_EN : std_logic; -- background enable output
+	signal TMP_FG_EN : std_logic_vector(PPU_FG_SPRITE_COUNT-1 downto 0); -- foreground enable output
 begin
+	BG_EN <= TMP_BG_EN and OE;
+	FG_EN <= TMP_FG_EN and OE;
+
 	process (FG_HIT)
 		variable HIT : boolean := false;
 	begin
 		-- check if FG_HIT is not empty
 		if FG_HIT /= FG_HIT_EMPTY then
-			BG_EN <= '0';
+			TMP_BG_EN <= '0';
 			for i in 0 to PPU_FG_SPRITE_COUNT-1 loop
 				-- if FG_HIT is the first one then enable it
 				if(FG_HIT(i) = '1' and HIT = false) then
-					FG_EN(i) <= '1';
+					TMP_FG_EN(i) <= '1';
 					HIT := true;
 				else
 					-- make rest low
-					FG_EN(i) <= '0';
+					TMP_FG_EN(i) <= '0';
 				end if;
 			end loop;
 			HIT := false;
 		else
-			BG_EN <= '1';
-			FG_EN <= (others => '0');
+			TMP_BG_EN <= '1';
+			TMP_FG_EN <= (others => '0');
 		end if;
 	end process;
 end Behavioral;
diff --git a/basys3/basys3.srcs/ppu_consts.vhd b/basys3/basys3.srcs/ppu_consts.vhd
index 4784950..6232667 100644
--- a/basys3/basys3.srcs/ppu_consts.vhd
+++ b/basys3/basys3.srcs/ppu_consts.vhd
@@ -49,7 +49,6 @@ package ppu_consts is
 	constant PPU_TMM_CACHE_FETCH_A_COUNT : natural := PPU_TMM_CACHE_FETCH_C_COUNT * PPU_FG_SPRITE_COUNT; -- amount of clocks to fetch new TMM cache
 	constant PPU_TMM_CACHE_FETCH_A_WIDTH : natural := ceil_log2(PPU_TMM_CACHE_FETCH_A_COUNT);
 	constant PPU_ACCURATE_FG_SPRITE_COUNT : natural := 16;
-	constant PPU_PL_TOTAL_STAGES : natural := 14;
 	-- VGA signal timings (https://tomverbeure.github.io/video_timings_calculator)
 	constant PPU_VGA_H_ACTIVE : natural := PPU_NATIVE_SCREEN_WIDTH;
 	constant PPU_VGA_H_PORCH_FRONT : natural := 96;
diff --git a/basys3/basys3.srcs/ppu_dispctl.vhd b/basys3/basys3.srcs/ppu_dispctl.vhd
index 1d3d922..4f017f3 100644
--- a/basys3/basys3.srcs/ppu_dispctl.vhd
+++ b/basys3/basys3.srcs/ppu_dispctl.vhd
@@ -15,7 +15,8 @@ entity ppu_dispctl is port(
 
 	RO,GO,BO : out std_logic_vector(PPU_COLOR_OUTPUT_DEPTH-1 downto 0); -- VGA color out
 	NVSYNC, NHSYNC : out std_logic; -- VGA sync out
-	THBLANK, TVBLANK : out std_logic); -- tiny sync signals
+	THBLANK, TVBLANK : out std_logic; -- tiny sync signals
+	ACTIVE : out std_logic); -- screen currently active (currently same for tiny/native, TODO: offset tiny for first scanline)
 end ppu_dispctl;
 
 architecture Behavioral of ppu_dispctl is
@@ -145,6 +146,7 @@ begin
 			if TMP_NHCOUNT = PPU_VGA_H_PORCH_BACK + PPU_VGA_H_ACTIVE + PPU_VGA_H_SYNC then TMP_NHSYNC := '0'; end if;
 		end if;
 	end process;
+	ACTIVE <= NACTIVE;
 
 	scanline_buffer : component ppu_dispctl_slbuf port map(
 		clka => SYSCLK,
diff --git a/basys3/basys3.srcs/ppu_pceg.vhd b/basys3/basys3.srcs/ppu_pceg.vhd
index d53d86a..3de3d23 100644
--- a/basys3/basys3.srcs/ppu_pceg.vhd
+++ b/basys3/basys3.srcs/ppu_pceg.vhd
@@ -1,46 +1,66 @@
 library ieee;
 use ieee.std_logic_1164.all;
 use work.ppu_consts.all;
+use work.ppu_pceg_consts.all;
 
 entity ppu_pceg is port(
 	CLK : in std_logic; -- system clock
 	RESET : in std_logic; -- async reset
-	SPRITE_BG : out std_logic; -- sprite info fetch + sprite pixel fetch
-	SPRITE_FG : out std_logic; -- sprite pixel fetch
+	SPRITE_BG : out ppu_sprite_bg_pl_state := PL_BG_IDLE; -- sprite info fetch + sprite pixel fetch
+	SPRITE_FG : out ppu_sprite_fg_pl_state := PL_FG_IDLE; -- sprite pixel fetch
 	DONE : out std_logic; -- last pipeline stage done
 	READY : out std_logic); -- rgb buffer propagation ready
 end ppu_pceg;
 
 architecture Behavioral of ppu_pceg is
-	signal PL_SPRITE_BG, PL_SPRITE_FG, PL_DONE, PL_READY : boolean := false;
 begin
-	-- output drivers
-	SPRITE_BG <= CLK when RESET = '0' and PL_SPRITE_BG else '0';
-	SPRITE_FG <= CLK when RESET = '0' and PL_SPRITE_FG else '0';
-	DONE <= CLK when RESET = '0' and PL_DONE else '0';
-	READY <= '1' when RESET = '0' and PL_READY else '0';
-
 	process(CLK, RESET)
-		variable CLK_IDX : natural range 0 to PPU_PL_TOTAL_STAGES+1 := 0;
+		variable CLK_IDX : natural range 0 to PPU_PCEG_TOTAL_STAGES+1 := 0;
 	begin
 		if RESET = '1' then
 			CLK_IDX := 0;
-			PL_SPRITE_BG <= false;
-			PL_SPRITE_FG <= false;
-			PL_DONE <= false;
-			PL_READY <= false;
+
+			SPRITE_BG <= PL_BG_IDLE;
+			SPRITE_FG <= PL_FG_IDLE;
+			DONE <= '0';
+			READY <= '0';
 		elsif rising_edge(CLK) then
-			-- clock counter ranges
-			PL_SPRITE_BG <= true when CLK_IDX >= 0 and CLK_IDX <= 3 else false;
-			PL_SPRITE_FG <= true when CLK_IDX >= 1 and CLK_IDX <= 2 else false;
-			PL_DONE <= true when CLK_IDX = 4 else false;
-			PL_READY <= true when CLK_IDX >= 5 else false;
+			case CLK_IDX is
+				when 0 =>
+					DONE <= '0';
+					READY <= '0';
+					SPRITE_BG <= PL_BG_IDLE;
+					SPRITE_FG <= PL_FG_IDLE;
+				when 1 =>
+					SPRITE_BG <= PL_BG_BAM_ADDR;
+					SPRITE_FG <= PL_FG_TMM_ADDR;
+				when 3 =>
+					SPRITE_BG <= PL_BG_IDLE;
+					SPRITE_FG <= PL_FG_IDLE;
+				when 4 =>
+					SPRITE_BG <= PL_BG_BAM_DATA;
+					SPRITE_FG <= PL_FG_TMM_DATA;
+				when 5 =>
+					SPRITE_BG <= PL_BG_TMM_ADDR;
+					SPRITE_FG <= PL_FG_IDLE;
+				when 6 => null;
+				when 7 =>
+					SPRITE_BG <= PL_BG_IDLE;
+				when 8 =>
+					DONE <= '1';
+					SPRITE_BG <= PL_BG_TMM_DATA;
+				when 9 =>
+					SPRITE_BG <= PL_BG_IDLE;
+					READY <= '1';
+				when others => null;
+			end case;
 
 			-- increment clock counter
 			CLK_IDX := CLK_IDX + 1;
-			if CLK_IDX = PPU_PL_TOTAL_STAGES then
+			if CLK_IDX = PPU_PCEG_TOTAL_STAGES then
 				CLK_IDX := 0;
 			end if;
 		end if;
 	end process;
 end Behavioral;
+
diff --git a/basys3/basys3.srcs/ppu_pceg_consts.vhd b/basys3/basys3.srcs/ppu_pceg_consts.vhd
new file mode 100644
index 0000000..eac4d23
--- /dev/null
+++ b/basys3/basys3.srcs/ppu_pceg_consts.vhd
@@ -0,0 +1,18 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use work.ppu_consts.all;
+
+package ppu_pceg_consts is
+	constant PPU_PCEG_TOTAL_STAGES : natural := 16;
+	type ppu_sprite_bg_pl_state is (
+		PL_BG_IDLE,
+		PL_BG_BAM_ADDR,
+		PL_BG_BAM_DATA,
+		PL_BG_TMM_ADDR,
+		PL_BG_TMM_DATA);
+	type ppu_sprite_fg_pl_state is (
+		PL_FG_IDLE,
+		PL_FG_TMM_ADDR,
+		PL_FG_TMM_DATA);
+end package ppu_pceg_consts;
+
diff --git a/basys3/basys3.srcs/ppu_pceg_tb.vhd b/basys3/basys3.srcs/ppu_pceg_tb.vhd
index 1c2c855..adc437a 100644
--- a/basys3/basys3.srcs/ppu_pceg_tb.vhd
+++ b/basys3/basys3.srcs/ppu_pceg_tb.vhd
@@ -4,6 +4,7 @@ library unisim;
 use ieee.std_logic_1164.all;
 use ieee.numeric_std.all;
 use unisim.vcomponents.all;
+use work.ppu_pceg_consts.all;
 
 entity ppu_pceg_tb is
 end ppu_pceg_tb;
@@ -12,26 +13,22 @@ architecture behavioral of ppu_pceg_tb is
 	component ppu_pceg port(
 		CLK : in std_logic; -- system clock
 		RESET : in std_logic; -- async reset
-		SPRITE_BG : out std_logic; -- sprite info fetch + sprite pixel fetch
-		SPRITE_FG : out std_logic; -- sprite pixel fetch
+		SPRITE_BG : out ppu_sprite_bg_pl_state := PL_BG_IDLE; -- sprite info fetch + sprite pixel fetch
+		SPRITE_FG : out ppu_sprite_fg_pl_state := PL_FG_IDLE; -- sprite pixel fetch
 		DONE : out std_logic; -- last pipeline stage done
 		READY : out std_logic); -- rgb buffer propagation ready
 	end component;
 	signal CLK : std_logic := '0';
 	signal RESET : std_logic := '0';
-	signal SPRITE_BG : std_logic;
-	signal SPRITE_FG : std_logic;
-	signal DONE : std_logic;
-	signal READY : std_logic;
 
 begin
 	uut : ppu_pceg port map(
 		CLK => CLK,
 		RESET => RESET,
-		SPRITE_BG => SPRITE_BG,
-		SPRITE_FG => SPRITE_FG,
-		DONE => DONE,
-		READY => READY);
+		SPRITE_BG => open,
+		SPRITE_FG => open,
+		DONE => open,
+		READY => open);
 
 	tb : process
 	begin
diff --git a/basys3/basys3.srcs/ppu_sprite_bg.vhd b/basys3/basys3.srcs/ppu_sprite_bg.vhd
index 417210c..1a91b5e 100644
--- a/basys3/basys3.srcs/ppu_sprite_bg.vhd
+++ b/basys3/basys3.srcs/ppu_sprite_bg.vhd
@@ -5,13 +5,14 @@ use ieee.std_logic_1164.all;
 use ieee.std_logic_unsigned.all;
 use ieee.numeric_std.all;
 use work.ppu_consts.all;
+use work.ppu_pceg_consts.all;
 
 -- TODO: add input stable / output stable pipeline stages if this doesn't work with propagation delays
 entity ppu_sprite_bg is port(
 	-- inputs
-	CLK : in std_logic; -- pipeline clock
+	CLK : in std_logic; -- system clock
 	RESET : in std_logic; -- reset clock counter
-	PL_RESET : in std_logic; -- reset pipeline clock counters
+	PL_STAGE : in ppu_sprite_bg_pl_state; -- pipeline stage
 	OE : in std_logic; -- output enable (of CIDX)
 	X : in std_logic_vector(PPU_POS_H_WIDTH-1 downto 0); -- current screen pixel x
 	Y : in std_logic_vector(PPU_POS_V_WIDTH-1 downto 0); -- current screen pixel y
@@ -45,10 +46,6 @@ architecture Behavioral of ppu_sprite_bg is
 	signal T_TMM_ADDR, R_TMM_ADDR : std_logic_vector(PPU_TMM_ADDR_WIDTH-1 downto 0) := (others => '0');
 	signal T_TMM_DATA, R_TMM_DATA : std_logic_vector(PPU_TMM_DATA_WIDTH-1 downto 0) := (others => '0');
 
-	-- state machine for synchronizing pipeline stages
-	type states is (PL_BAM_ADDR, PL_BAM_DATA, PL_TMM_ADDR, PL_TMM_DATA);
-	signal state : states := PL_BAM_ADDR;
-
 	-- docs/architecture.md#background-attribute-memory
 	alias BAM_DATA_FLIP_H is R_BAM_DATA(14); -- flip horizontally
 	alias BAM_DATA_FLIP_V is R_BAM_DATA(13); -- flip vertically
@@ -68,8 +65,8 @@ architecture Behavioral of ppu_sprite_bg is
 begin
 	-- output drivers
 	CIDX <= T_CIDX when OE = '1' else (others => 'Z');
-	BAM_ADDR <= R_BAM_ADDR when state = PL_BAM_ADDR else (others => 'Z');
-	TMM_ADDR <= R_TMM_ADDR when state = PL_TMM_ADDR else (others => 'Z');
+	BAM_ADDR <= R_BAM_ADDR when PL_STAGE = PL_BG_BAM_ADDR else (others => 'Z');
+	TMM_ADDR <= R_TMM_ADDR when PL_STAGE = PL_BG_TMM_ADDR else (others => 'Z');
 	T_BAM_DATA <= BAM_DATA;
 	T_TMM_DATA <= TMM_DATA;
 	-- CIDX combination
@@ -109,32 +106,25 @@ begin
 		                    (others => '0') when others;
 
 	-- state machine (pipeline stage counter) + sync r/w
-	process(CLK, RESET, PL_RESET)
+	process(CLK, RESET)
 	begin
-		if RESET = '1' or PL_RESET = '1' then
-			-- reset state
-			state <= PL_BAM_ADDR;
-			if RESET = '1' then
-				-- reset internal pipeline registers
-				R_BAM_ADDR <= (others => '0');
-				R_BAM_DATA <= (others => '0');
-				R_TMM_ADDR <= (others => '0');
-				R_TMM_DATA <= (others => '0');
-			end if;
+		if RESET = '1' then
+			-- reset internal pipeline registers
+			R_BAM_ADDR <= (others => '0');
+			R_BAM_DATA <= (others => '0');
+			R_TMM_ADDR <= (others => '0');
+			R_TMM_DATA <= (others => '0');
 		elsif rising_edge(CLK) then
-			case state is
-				when PL_BAM_ADDR =>
-					state <= PL_BAM_DATA;
+			case PL_STAGE is
+				when PL_BG_BAM_ADDR =>
 					R_BAM_ADDR <= T_BAM_ADDR;
-				when PL_BAM_DATA =>
-					state <= PL_TMM_ADDR;
+				when PL_BG_BAM_DATA =>
 					R_BAM_DATA <= T_BAM_DATA;
-				when PL_TMM_ADDR =>
-					state <= PL_TMM_DATA;
+				when PL_BG_TMM_ADDR =>
 					R_TMM_ADDR <= T_TMM_ADDR;
-				when PL_TMM_DATA =>
-					state <= PL_BAM_ADDR;
+				when PL_BG_TMM_DATA =>
 					R_TMM_DATA <= T_TMM_DATA;
+				when others => null;
 			end case;
 		end if;
 	end process;
diff --git a/basys3/basys3.srcs/ppu_sprite_fg.vhd b/basys3/basys3.srcs/ppu_sprite_fg.vhd
index 3b4d2c6..89e6e66 100644
--- a/basys3/basys3.srcs/ppu_sprite_fg.vhd
+++ b/basys3/basys3.srcs/ppu_sprite_fg.vhd
@@ -5,6 +5,7 @@ use ieee.std_logic_1164.all;
 use ieee.std_logic_unsigned.all;
 use ieee.numeric_std.all;
 use work.ppu_consts.all;
+use work.ppu_pceg_consts.all;
 
 -- TODO: add input stable / output stable pipeline stages if this doesn't work with propagation delays
 entity ppu_sprite_fg is -- foreground sprite
@@ -14,8 +15,7 @@ entity ppu_sprite_fg is -- foreground sprite
 		-- inputs
 		CLK : in std_logic; -- system clock
 		RESET : in std_logic; -- reset internal memory and clock counters
-		PL_CLK : in std_logic; -- pipeline clock
-		PL_RESET : in std_logic; -- reset pipeline clock counters
+		PL_STAGE : in ppu_sprite_fg_pl_state; -- pipeline stage
 		OE : in std_logic; -- output enable (of CIDX)
 		X : in std_logic_vector(PPU_POS_H_WIDTH-1 downto 0); -- current screen pixel x
 		Y : in std_logic_vector(PPU_POS_V_WIDTH-1 downto 0); -- current screen pixel y
@@ -135,12 +135,10 @@ begin
 
 	inaccurate_occlusion_shims: if IDX >= PPU_ACCURATE_FG_SPRITE_COUNT generate
 		-- state machine for synchronizing pipeline stages
-		type states is (PL_TMM_ADDR, PL_TMM_DATA);
-		signal state : states := PL_TMM_ADDR;
 	begin
 		HIT <= SPRITE_ACTIVE;
 		-- only fetch if OE is high, and during the second pipeline stage
-		TMM_ADDR <= R_TMM_ADDR when OE = '1' and state = PL_TMM_ADDR else (others => 'Z');
+		TMM_ADDR <= R_TMM_ADDR when OE = '1' and PL_STAGE = PL_FG_TMM_ADDR else (others => 'Z');
 		T_TMM_ADDR <= std_logic_vector(TILEMAP_WORD + to_unsigned(TILEMAP_WORD_OFFSET, PPU_TMM_ADDR_WIDTH)); -- TMM address
 
 		-- TMM DATA
@@ -152,24 +150,19 @@ begin
 													R_TMM_DATA(14 downto 12) when 4,
 													(others => '0') when others;
 
-		process(PL_CLK, RESET, PL_RESET)
+		process(CLK, RESET)
 		begin
-			if RESET = '1' or PL_RESET = '1' then
-				-- reset state
-				state <= PL_TMM_ADDR;
-				if RESET = '1' then
-					-- reset internal pipeline registers
-					R_TMM_ADDR <= (others => '0');
-					R_TMM_DATA <= (others => '0');
-				end if;
+			if RESET = '1' then
+				-- reset internal pipeline registers
+				R_TMM_ADDR <= (others => '0');
+				R_TMM_DATA <= (others => '0');
 			elsif rising_edge(CLK) then
-				case state is
-					when PL_TMM_ADDR =>
-						state <= PL_TMM_DATA;
+				case PL_STAGE is
+					when PL_FG_TMM_ADDR =>
 						R_TMM_ADDR <= T_TMM_ADDR;
-					when PL_TMM_DATA =>
-						state <= PL_TMM_ADDR;
+					when PL_FG_TMM_DATA =>
 						R_TMM_DATA <= T_TMM_DATA;
+					when others => null;
 				end case;
 			end if;
 		end process;
diff --git a/basys3/basys3.xpr b/basys3/basys3.xpr
index acb43b0..b4e930e 100644
--- a/basys3/basys3.xpr
+++ b/basys3/basys3.xpr
@@ -60,7 +60,7 @@
     <Option Name="IPStaticSourceDir" Val="$PIPUSERFILESDIR/ipstatic"/>
     <Option Name="EnableBDX" Val="FALSE"/>
     <Option Name="DSABoardId" Val="basys3"/>
-    <Option Name="WTXSimLaunchSim" Val="33"/>
+    <Option Name="WTXSimLaunchSim" Val="62"/>
     <Option Name="WTModelSimLaunchSim" Val="0"/>
     <Option Name="WTQuestaLaunchSim" Val="0"/>
     <Option Name="WTIesLaunchSim" Val="0"/>
@@ -98,6 +98,13 @@
           <Attr Name="UsedIn" Val="simulation"/>
         </FileInfo>
       </File>
+      <File Path="$PSRCDIR/ppu_pceg_consts.vhd">
+        <FileInfo SFType="VHDL2008">
+          <Attr Name="IsGlobalInclude" Val="1"/>
+          <Attr Name="UsedIn" Val="synthesis"/>
+          <Attr Name="UsedIn" Val="simulation"/>
+        </FileInfo>
+      </File>
       <File Path="$PSRCDIR/er_ram.vhd">
         <FileInfo SFType="VHDL2008">
           <Attr Name="UsedIn" Val="synthesis"/>
@@ -222,6 +229,12 @@
           <Attr Name="UsedIn" Val="simulation"/>
         </FileInfo>
       </File>
+      <File Path="$PSRCDIR/ppu_pceg_tb.vhd">
+        <FileInfo>
+          <Attr Name="UsedIn" Val="synthesis"/>
+          <Attr Name="UsedIn" Val="simulation"/>
+        </FileInfo>
+      </File>
       <Config>
         <Option Name="DesignMode" Val="RTL"/>
         <Option Name="TopModule" Val="ppu_tb"/>
@@ -373,9 +386,7 @@
     </Run>
     <Run Id="synth_3" Type="Ft3:Synth" SrcSet="sources_1" Part="xc7a35tcpg236-1" ConstrsSet="constrs_1" Description="Vivado Synthesis Defaults" AutoIncrementalCheckpoint="true" IncrementalCheckpoint="$PSRCDIR/utils_1/imports/synth_3/top.dcp" WriteIncrSynthDcp="false" State="current" Dir="$PRUNDIR/synth_3" IncludeInArchive="true" IsChild="false" AutoIncrementalDir="$PSRCDIR/utils_1/imports/synth_3" AutoRQSDir="$PSRCDIR/utils_1/imports/synth_3">
       <Strategy Version="1" Minor="2">
-        <StratHandle Name="Vivado Synthesis Defaults" Flow="Vivado Synthesis 2022">
-          <Desc>Vivado Synthesis Defaults</Desc>
-        </StratHandle>
+        <StratHandle Name="Vivado Synthesis Defaults" Flow="Vivado Synthesis 2022"/>
         <Step Id="synth_design"/>
       </Strategy>
       <GeneratedRun Dir="$PRUNDIR" File="gen_run.xml"/>
@@ -453,9 +464,7 @@
     </Run>
     <Run Id="impl_3" Type="Ft2:EntireDesign" Part="xc7a35tcpg236-1" ConstrsSet="constrs_1" Description="Default settings for Implementation." AutoIncrementalCheckpoint="false" WriteIncrSynthDcp="false" State="current" Dir="$PRUNDIR/impl_3" SynthRun="synth_3" IncludeInArchive="true" IsChild="false" GenFullBitstream="true" AutoIncrementalDir="$PSRCDIR/utils_1/imports/impl_3" AutoRQSDir="$PSRCDIR/utils_1/imports/impl_3">
       <Strategy Version="1" Minor="2">
-        <StratHandle Name="Vivado Implementation Defaults" Flow="Vivado Implementation 2022">
-          <Desc>Default settings for Implementation.</Desc>
-        </StratHandle>
+        <StratHandle Name="Vivado Implementation Defaults" Flow="Vivado Implementation 2022"/>
         <Step Id="init_design"/>
         <Step Id="opt_design"/>
         <Step Id="power_opt_design"/>
diff --git a/basys3/ppu_tb_behav.wcfg b/basys3/ppu_tb_behav.wcfg
new file mode 100644
index 0000000..085f335
--- /dev/null
+++ b/basys3/ppu_tb_behav.wcfg
@@ -0,0 +1,505 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<wave_config>
+   <wave_state>
+   </wave_state>
+   <db_ref_list>
+      <db_ref path="ppu_tb_behav.wdb" id="1">
+         <top_modules>
+            <top_module name="glbl" />
+            <top_module name="ppu_consts" />
+            <top_module name="ppu_pceg_consts" />
+            <top_module name="ppu_tb" />
+         </top_modules>
+      </db_ref>
+   </db_ref_list>
+   <zoom_setting>
+      <ZoomStartTime time="924.298300 us"></ZoomStartTime>
+      <ZoomEndTime time="943.298301 us"></ZoomEndTime>
+      <Cursor1Time time="932.318300 us"></Cursor1Time>
+   </zoom_setting>
+   <column_width_setting>
+      <NameColumnWidth column_width="167"></NameColumnWidth>
+      <ValueColumnWidth column_width="149"></ValueColumnWidth>
+   </column_width_setting>
+   <WVObjectSize size="6" />
+   <wvobject type="group" fp_name="group136">
+      <obj_property name="label">clks</obj_property>
+      <obj_property name="DisplayName">label</obj_property>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/CLK100">
+         <obj_property name="ElementShortName">CLK100</obj_property>
+         <obj_property name="ObjectShortName">CLK100</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/display_controller/NPIXCLK">
+         <obj_property name="ElementShortName">NPIXCLK</obj_property>
+         <obj_property name="ObjectShortName">NPIXCLK</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/display_controller/TPIXCLK">
+         <obj_property name="ElementShortName">TPIXCLK</obj_property>
+         <obj_property name="ObjectShortName">TPIXCLK</obj_property>
+      </wvobject>
+   </wvobject>
+   <wvobject type="group" fp_name="group150">
+      <obj_property name="label">ppu top</obj_property>
+      <obj_property name="DisplayName">label</obj_property>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/RESET">
+         <obj_property name="ElementShortName">RESET</obj_property>
+         <obj_property name="ObjectShortName">RESET</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/WEN">
+         <obj_property name="ElementShortName">WEN</obj_property>
+         <obj_property name="ObjectShortName">WEN</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/ADDR">
+         <obj_property name="ElementShortName">ADDR[15:0]</obj_property>
+         <obj_property name="ObjectShortName">ADDR[15:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/DATA">
+         <obj_property name="ElementShortName">DATA[15:0]</obj_property>
+         <obj_property name="ObjectShortName">DATA[15:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/R">
+         <obj_property name="ElementShortName">R[3:0]</obj_property>
+         <obj_property name="ObjectShortName">R[3:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/G">
+         <obj_property name="ElementShortName">G[3:0]</obj_property>
+         <obj_property name="ObjectShortName">G[3:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/B">
+         <obj_property name="ElementShortName">B[3:0]</obj_property>
+         <obj_property name="ObjectShortName">B[3:0]</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/VSYNC">
+         <obj_property name="ElementShortName">VSYNC</obj_property>
+         <obj_property name="ObjectShortName">VSYNC</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/HSYNC">
+         <obj_property name="ElementShortName">HSYNC</obj_property>
+         <obj_property name="ObjectShortName">HSYNC</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/VBLANK">
+         <obj_property name="ElementShortName">VBLANK</obj_property>
+         <obj_property name="ObjectShortName">VBLANK</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/SYSCLK">
+         <obj_property name="ElementShortName">SYSCLK</obj_property>
+         <obj_property name="ObjectShortName">SYSCLK</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/SYSRST">
+         <obj_property name="ElementShortName">SYSRST</obj_property>
+         <obj_property name="ObjectShortName">SYSRST</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/PL_SPRITE_FG">
+         <obj_property name="ElementShortName">PL_SPRITE_FG</obj_property>
+         <obj_property name="ObjectShortName">PL_SPRITE_FG</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/PL_SPRITE_BG">
+         <obj_property name="ElementShortName">PL_SPRITE_BG</obj_property>
+         <obj_property name="ObjectShortName">PL_SPRITE_BG</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/PL_DONE">
+         <obj_property name="ElementShortName">PL_DONE</obj_property>
+         <obj_property name="ObjectShortName">PL_DONE</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/PL_READY">
+         <obj_property name="ElementShortName">PL_READY</obj_property>
+         <obj_property name="ObjectShortName">PL_READY</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/TMM_WEN">
+         <obj_property name="ElementShortName">TMM_WEN</obj_property>
+         <obj_property name="ObjectShortName">TMM_WEN</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/BAM_WEN">
+         <obj_property name="ElementShortName">BAM_WEN</obj_property>
+         <obj_property name="ObjectShortName">BAM_WEN</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/FAM_WEN">
+         <obj_property name="ElementShortName">FAM_WEN</obj_property>
+         <obj_property name="ObjectShortName">FAM_WEN</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/PAL_WEN">
+         <obj_property name="ElementShortName">PAL_WEN</obj_property>
+         <obj_property name="ObjectShortName">PAL_WEN</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/AUX_WEN">
+         <obj_property name="ElementShortName">AUX_WEN</obj_property>
+         <obj_property name="ObjectShortName">AUX_WEN</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/TMM_W_ADDR">
+         <obj_property name="ElementShortName">TMM_W_ADDR[15:0]</obj_property>
+         <obj_property name="ObjectShortName">TMM_W_ADDR[15:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/TMM_R_ADDR">
+         <obj_property name="ElementShortName">TMM_R_ADDR[15:0]</obj_property>
+         <obj_property name="ObjectShortName">TMM_R_ADDR[15:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/BAM_W_ADDR">
+         <obj_property name="ElementShortName">BAM_W_ADDR[10:0]</obj_property>
+         <obj_property name="ObjectShortName">BAM_W_ADDR[10:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/BAM_R_ADDR">
+         <obj_property name="ElementShortName">BAM_R_ADDR[10:0]</obj_property>
+         <obj_property name="ObjectShortName">BAM_R_ADDR[10:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/TMM_R_DATA">
+         <obj_property name="ElementShortName">TMM_R_DATA[14:0]</obj_property>
+         <obj_property name="ObjectShortName">TMM_R_DATA[14:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/BAM_R_DATA">
+         <obj_property name="ElementShortName">BAM_R_DATA[14:0]</obj_property>
+         <obj_property name="ObjectShortName">BAM_R_DATA[14:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/FAM_W_ADDR">
+         <obj_property name="ElementShortName">FAM_W_ADDR[7:0]</obj_property>
+         <obj_property name="ObjectShortName">FAM_W_ADDR[7:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/PAL_W_ADDR">
+         <obj_property name="ElementShortName">PAL_W_ADDR[5:0]</obj_property>
+         <obj_property name="ObjectShortName">PAL_W_ADDR[5:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/AUX_W_ADDR">
+         <obj_property name="ElementShortName">AUX_W_ADDR[0:0]</obj_property>
+         <obj_property name="ObjectShortName">AUX_W_ADDR[0:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/CIDX">
+         <obj_property name="ElementShortName">CIDX[5:0]</obj_property>
+         <obj_property name="ObjectShortName">CIDX[5:0]</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/BG_EN">
+         <obj_property name="ElementShortName">BG_EN</obj_property>
+         <obj_property name="ObjectShortName">BG_EN</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/FG_EN">
+         <obj_property name="ElementShortName">FG_EN[127:0]</obj_property>
+         <obj_property name="ObjectShortName">FG_EN[127:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/FG_HIT">
+         <obj_property name="ElementShortName">FG_HIT[127:0]</obj_property>
+         <obj_property name="ObjectShortName">FG_HIT[127:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/X">
+         <obj_property name="ElementShortName">X[8:0]</obj_property>
+         <obj_property name="ObjectShortName">X[8:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/Y">
+         <obj_property name="ElementShortName">Y[7:0]</obj_property>
+         <obj_property name="ObjectShortName">Y[7:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/UR">
+         <obj_property name="ElementShortName">UR[3:0]</obj_property>
+         <obj_property name="ObjectShortName">UR[3:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/UG">
+         <obj_property name="ElementShortName">UG[3:0]</obj_property>
+         <obj_property name="ObjectShortName">UG[3:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/UB">
+         <obj_property name="ElementShortName">UB[3:0]</obj_property>
+         <obj_property name="ObjectShortName">UB[3:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/BG_SHIFT_X">
+         <obj_property name="ElementShortName">BG_SHIFT_X[8:0]</obj_property>
+         <obj_property name="ObjectShortName">BG_SHIFT_X[8:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/BG_SHIFT_Y">
+         <obj_property name="ElementShortName">BG_SHIFT_Y[7:0]</obj_property>
+         <obj_property name="ObjectShortName">BG_SHIFT_Y[7:0]</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/FG_FETCH">
+         <obj_property name="ElementShortName">FG_FETCH</obj_property>
+         <obj_property name="ObjectShortName">FG_FETCH</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/NVSYNC">
+         <obj_property name="ElementShortName">NVSYNC</obj_property>
+         <obj_property name="ObjectShortName">NVSYNC</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/NHSYNC">
+         <obj_property name="ElementShortName">NHSYNC</obj_property>
+         <obj_property name="ObjectShortName">NHSYNC</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/THBLANK">
+         <obj_property name="ElementShortName">THBLANK</obj_property>
+         <obj_property name="ObjectShortName">THBLANK</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/TVBLANK">
+         <obj_property name="ElementShortName">TVBLANK</obj_property>
+         <obj_property name="ObjectShortName">TVBLANK</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/PCEG_RESET">
+         <obj_property name="ElementShortName">PCEG_RESET</obj_property>
+         <obj_property name="ObjectShortName">PCEG_RESET</obj_property>
+      </wvobject>
+   </wvobject>
+   <wvobject type="group" fp_name="group149">
+      <obj_property name="label">background sprite</obj_property>
+      <obj_property name="DisplayName">label</obj_property>
+      <obj_property name="isExpanded"></obj_property>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/background_sprite/CLK">
+         <obj_property name="ElementShortName">CLK</obj_property>
+         <obj_property name="ObjectShortName">CLK</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/background_sprite/RESET">
+         <obj_property name="ElementShortName">RESET</obj_property>
+         <obj_property name="ObjectShortName">RESET</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/background_sprite/PL_STAGE">
+         <obj_property name="ElementShortName">PL_STAGE</obj_property>
+         <obj_property name="ObjectShortName">PL_STAGE</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/background_sprite/OE">
+         <obj_property name="ElementShortName">OE</obj_property>
+         <obj_property name="ObjectShortName">OE</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/X">
+         <obj_property name="ElementShortName">X[8:0]</obj_property>
+         <obj_property name="ObjectShortName">X[8:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/Y">
+         <obj_property name="ElementShortName">Y[7:0]</obj_property>
+         <obj_property name="ObjectShortName">Y[7:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/BG_SHIFT_X">
+         <obj_property name="ElementShortName">BG_SHIFT_X[8:0]</obj_property>
+         <obj_property name="ObjectShortName">BG_SHIFT_X[8:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/BG_SHIFT_Y">
+         <obj_property name="ElementShortName">BG_SHIFT_Y[7:0]</obj_property>
+         <obj_property name="ObjectShortName">BG_SHIFT_Y[7:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/BAM_ADDR">
+         <obj_property name="ElementShortName">BAM_ADDR[10:0]</obj_property>
+         <obj_property name="ObjectShortName">BAM_ADDR[10:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/BAM_DATA">
+         <obj_property name="ElementShortName">BAM_DATA[14:0]</obj_property>
+         <obj_property name="ObjectShortName">BAM_DATA[14:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/TMM_ADDR">
+         <obj_property name="ElementShortName">TMM_ADDR[15:0]</obj_property>
+         <obj_property name="ObjectShortName">TMM_ADDR[15:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/TMM_DATA">
+         <obj_property name="ElementShortName">TMM_DATA[14:0]</obj_property>
+         <obj_property name="ObjectShortName">TMM_DATA[14:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/CIDX">
+         <obj_property name="ElementShortName">CIDX[5:0]</obj_property>
+         <obj_property name="ObjectShortName">CIDX[5:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/T_BAM_ADDR">
+         <obj_property name="ElementShortName">T_BAM_ADDR[10:0]</obj_property>
+         <obj_property name="ObjectShortName">T_BAM_ADDR[10:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/R_BAM_ADDR">
+         <obj_property name="ElementShortName">R_BAM_ADDR[10:0]</obj_property>
+         <obj_property name="ObjectShortName">R_BAM_ADDR[10:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/T_BAM_DATA">
+         <obj_property name="ElementShortName">T_BAM_DATA[14:0]</obj_property>
+         <obj_property name="ObjectShortName">T_BAM_DATA[14:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/R_BAM_DATA">
+         <obj_property name="ElementShortName">R_BAM_DATA[14:0]</obj_property>
+         <obj_property name="ObjectShortName">R_BAM_DATA[14:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/T_TMM_ADDR">
+         <obj_property name="ElementShortName">T_TMM_ADDR[15:0]</obj_property>
+         <obj_property name="ObjectShortName">T_TMM_ADDR[15:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/R_TMM_ADDR">
+         <obj_property name="ElementShortName">R_TMM_ADDR[15:0]</obj_property>
+         <obj_property name="ObjectShortName">R_TMM_ADDR[15:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/T_TMM_DATA">
+         <obj_property name="ElementShortName">T_TMM_DATA[14:0]</obj_property>
+         <obj_property name="ObjectShortName">T_TMM_DATA[14:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/R_TMM_DATA">
+         <obj_property name="ElementShortName">R_TMM_DATA[14:0]</obj_property>
+         <obj_property name="ObjectShortName">R_TMM_DATA[14:0]</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/background_sprite/PIXEL_ABS_X">
+         <obj_property name="ElementShortName">PIXEL_ABS_X</obj_property>
+         <obj_property name="ObjectShortName">PIXEL_ABS_X</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/background_sprite/PIXEL_ABS_Y">
+         <obj_property name="ElementShortName">PIXEL_ABS_Y</obj_property>
+         <obj_property name="ObjectShortName">PIXEL_ABS_Y</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/background_sprite/TILE_IDX_X">
+         <obj_property name="ElementShortName">TILE_IDX_X</obj_property>
+         <obj_property name="ObjectShortName">TILE_IDX_X</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/background_sprite/TILE_IDX_Y">
+         <obj_property name="ElementShortName">TILE_IDX_Y</obj_property>
+         <obj_property name="ObjectShortName">TILE_IDX_Y</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/TILE_PIDX_X">
+         <obj_property name="ElementShortName">TILE_PIDX_X[3:0]</obj_property>
+         <obj_property name="ObjectShortName">TILE_PIDX_X[3:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/TRANS_TILE_PIDX_X">
+         <obj_property name="ElementShortName">TRANS_TILE_PIDX_X[3:0]</obj_property>
+         <obj_property name="ObjectShortName">TRANS_TILE_PIDX_X[3:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/TILE_PIDX_Y">
+         <obj_property name="ElementShortName">TILE_PIDX_Y[3:0]</obj_property>
+         <obj_property name="ObjectShortName">TILE_PIDX_Y[3:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/TRANS_TILE_PIDX_Y">
+         <obj_property name="ElementShortName">TRANS_TILE_PIDX_Y[3:0]</obj_property>
+         <obj_property name="ObjectShortName">TRANS_TILE_PIDX_Y[3:0]</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/background_sprite/TRANS_TILE_PIDX">
+         <obj_property name="ElementShortName">TRANS_TILE_PIDX</obj_property>
+         <obj_property name="ObjectShortName">TRANS_TILE_PIDX</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/background_sprite/TILEMAP_WORD_OFFSET">
+         <obj_property name="ElementShortName">TILEMAP_WORD_OFFSET</obj_property>
+         <obj_property name="ObjectShortName">TILEMAP_WORD_OFFSET</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/background_sprite/PIXEL_BIT_OFFSET">
+         <obj_property name="ElementShortName">PIXEL_BIT_OFFSET</obj_property>
+         <obj_property name="ObjectShortName">PIXEL_BIT_OFFSET</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/TMM_DATA_PAL_IDX">
+         <obj_property name="ElementShortName">TMM_DATA_PAL_IDX[2:0]</obj_property>
+         <obj_property name="ObjectShortName">TMM_DATA_PAL_IDX[2:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/background_sprite/T_CIDX">
+         <obj_property name="ElementShortName">T_CIDX[5:0]</obj_property>
+         <obj_property name="ObjectShortName">T_CIDX[5:0]</obj_property>
+         <obj_property name="isExpanded"></obj_property>
+      </wvobject>
+   </wvobject>
+   <wvobject type="group" fp_name="group142">
+      <obj_property name="label">display coordinates</obj_property>
+      <obj_property name="DisplayName">label</obj_property>
+      <obj_property name="isExpanded"></obj_property>
+      <wvobject type="array" fp_name="/ppu_tb/uut/display_controller/T_POS_X">
+         <obj_property name="ElementShortName">T_POS_X[8:0]</obj_property>
+         <obj_property name="ObjectShortName">T_POS_X[8:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/display_controller/T_POS_Y">
+         <obj_property name="ElementShortName">T_POS_Y[7:0]</obj_property>
+         <obj_property name="ObjectShortName">T_POS_Y[7:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/display_controller/U_POS_X">
+         <obj_property name="ElementShortName">U_POS_X[8:0]</obj_property>
+         <obj_property name="ObjectShortName">U_POS_X[8:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/display_controller/U_POS_Y">
+         <obj_property name="ElementShortName">U_POS_Y[7:0]</obj_property>
+         <obj_property name="ObjectShortName">U_POS_Y[7:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/display_controller/N_POS_X">
+         <obj_property name="ElementShortName">N_POS_X[9:0]</obj_property>
+         <obj_property name="ObjectShortName">N_POS_X[9:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/display_controller/N_POS_Y">
+         <obj_property name="ElementShortName">N_POS_Y[8:0]</obj_property>
+         <obj_property name="ObjectShortName">N_POS_Y[8:0]</obj_property>
+      </wvobject>
+      <wvobject type="group" fp_name="group276">
+         <obj_property name="label">active</obj_property>
+         <obj_property name="DisplayName">label</obj_property>
+         <wvobject type="logic" fp_name="/ppu_tb/uut/display_controller/NACTIVE">
+            <obj_property name="ElementShortName">NACTIVE</obj_property>
+            <obj_property name="ObjectShortName">NACTIVE</obj_property>
+         </wvobject>
+         <wvobject type="logic" fp_name="/ppu_tb/uut/display_controller/NHACTIVE">
+            <obj_property name="ElementShortName">NHACTIVE</obj_property>
+            <obj_property name="ObjectShortName">NHACTIVE</obj_property>
+         </wvobject>
+         <wvobject type="logic" fp_name="/ppu_tb/uut/display_controller/NVACTIVE">
+            <obj_property name="ElementShortName">NVACTIVE</obj_property>
+            <obj_property name="ObjectShortName">NVACTIVE</obj_property>
+         </wvobject>
+         <wvobject type="logic" fp_name="/ppu_tb/uut/display_controller/TACTIVE">
+            <obj_property name="ElementShortName">TACTIVE</obj_property>
+            <obj_property name="ObjectShortName">TACTIVE</obj_property>
+         </wvobject>
+         <wvobject type="logic" fp_name="/ppu_tb/uut/display_controller/THACTIVE">
+            <obj_property name="ElementShortName">THACTIVE</obj_property>
+            <obj_property name="ObjectShortName">THACTIVE</obj_property>
+         </wvobject>
+         <wvobject type="logic" fp_name="/ppu_tb/uut/display_controller/TVACTIVE">
+            <obj_property name="ElementShortName">TVACTIVE</obj_property>
+            <obj_property name="ObjectShortName">TVACTIVE</obj_property>
+         </wvobject>
+         <wvobject type="logic" fp_name="/ppu_tb/uut/display_controller/ACTIVE">
+            <obj_property name="ElementShortName">ACTIVE</obj_property>
+            <obj_property name="ObjectShortName">ACTIVE</obj_property>
+         </wvobject>
+      </wvobject>
+   </wvobject>
+   <wvobject type="group" fp_name="group115">
+      <obj_property name="label">pipeline stages</obj_property>
+      <obj_property name="DisplayName">label</obj_property>
+      <obj_property name="isExpanded"></obj_property>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/pipeline_clock_edge_generator/CLK">
+         <obj_property name="ElementShortName">CLK</obj_property>
+         <obj_property name="ObjectShortName">CLK</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/pipeline_clock_edge_generator/RESET">
+         <obj_property name="ElementShortName">RESET</obj_property>
+         <obj_property name="ObjectShortName">RESET</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/pipeline_clock_edge_generator/SPRITE_BG">
+         <obj_property name="ElementShortName">SPRITE_BG</obj_property>
+         <obj_property name="ObjectShortName">SPRITE_BG</obj_property>
+      </wvobject>
+      <wvobject type="other" fp_name="/ppu_tb/uut/pipeline_clock_edge_generator/SPRITE_FG">
+         <obj_property name="ElementShortName">SPRITE_FG</obj_property>
+         <obj_property name="ObjectShortName">SPRITE_FG</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/pipeline_clock_edge_generator/DONE">
+         <obj_property name="ElementShortName">DONE</obj_property>
+         <obj_property name="ObjectShortName">DONE</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/pipeline_clock_edge_generator/READY">
+         <obj_property name="ElementShortName">READY</obj_property>
+         <obj_property name="ObjectShortName">READY</obj_property>
+      </wvobject>
+   </wvobject>
+   <wvobject type="group" fp_name="group126">
+      <obj_property name="label">aux</obj_property>
+      <obj_property name="DisplayName">label</obj_property>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/aux/CLK">
+         <obj_property name="ElementShortName">CLK</obj_property>
+         <obj_property name="ObjectShortName">CLK</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/aux/RESET">
+         <obj_property name="ElementShortName">RESET</obj_property>
+         <obj_property name="ObjectShortName">RESET</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/aux/AUX_WEN">
+         <obj_property name="ElementShortName">AUX_WEN</obj_property>
+         <obj_property name="ObjectShortName">AUX_WEN</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/aux/AUX_ADDR">
+         <obj_property name="ElementShortName">AUX_ADDR[0:0]</obj_property>
+         <obj_property name="ObjectShortName">AUX_ADDR[0:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/aux/AUX_DATA">
+         <obj_property name="ElementShortName">AUX_DATA[15:0]</obj_property>
+         <obj_property name="ObjectShortName">AUX_DATA[15:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/aux/BG_SHIFT_X">
+         <obj_property name="ElementShortName">BG_SHIFT_X[8:0]</obj_property>
+         <obj_property name="ObjectShortName">BG_SHIFT_X[8:0]</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/aux/BG_SHIFT_Y">
+         <obj_property name="ElementShortName">BG_SHIFT_Y[7:0]</obj_property>
+         <obj_property name="ObjectShortName">BG_SHIFT_Y[7:0]</obj_property>
+      </wvobject>
+      <wvobject type="logic" fp_name="/ppu_tb/uut/aux/FG_FETCH">
+         <obj_property name="ElementShortName">FG_FETCH</obj_property>
+         <obj_property name="ObjectShortName">FG_FETCH</obj_property>
+      </wvobject>
+      <wvobject type="array" fp_name="/ppu_tb/uut/aux/INT_REG">
+         <obj_property name="ElementShortName">INT_REG[31:0]</obj_property>
+         <obj_property name="ObjectShortName">INT_REG[31:0]</obj_property>
+      </wvobject>
+   </wvobject>
+</wave_config>
-- 
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