Small Adjustments

.gitignore

@@ -14,3 +14,4 @@ nes.map
 *.hex
 nes_description.txt
 output_file.map
+nes.qws

nes.qsf

@@ -677,5 +677,5 @@ set_instance_assignment -name IO_STANDARD "3.3-V LVTTL" -to GPIO[21]
 set_global_assignment -name PARTITION_NETLIST_TYPE SOURCE -section_id Top
 set_global_assignment -name PARTITION_FITTER_PRESERVATION_LEVEL PLACEMENT_AND_ROUTING -section_id Top
 set_global_assignment -name PARTITION_COLOR 16764057 -section_id Top
-set_global_assignment -name SLD_FILE db/stp_auto_stripped.stp
-set_instance_assignment -name PARTITION_HIERARCHY root_partition -to | -section_id Top
+set_instance_assignment -name PARTITION_HIERARCHY root_partition -to | -section_id Top
+set_global_assignment -name SLD_FILE db/stp_auto_stripped.stp

ppu.vhd

@@ -207,11 +207,11 @@ architecture behavioral of ppu is
 	constant NULL_SPRITE : sprite_t := (x => x"00", tile_low => x"00", tile_high => x"00", priority => '0', palette => "00", pixel => "00");
 	constant SKIP_DOT_CYCLE : integer := 339;
 	constant ENABLE_NMI_WRITE_CYCLE : integer := 0;
-	constant PPUSTATUS_READ_CYCLE : integer := 0;
-	constant VBLANK_SET_CYCLE : integer := 1;
-	constant VBLANK_CLEAR_CYCLE : integer := 1;
-	constant SPR0HIT_CLEAR_CYCLE : integer := 0;
-	constant SPROVFW_CLEAR_CYCLE : integer := 0;
+	constant PPUSTATUS_READ_CYCLE : integer := 1; -- 0
+	constant VBLANK_SET_CYCLE : integer := 0;     -- 1
+	constant VBLANK_CLEAR_CYCLE : integer := 0;   -- 1
+	constant SPR0HIT_CLEAR_CYCLE : integer := 0;  -- 0
+	constant SPROVFW_CLEAR_CYCLE : integer := 0;  -- 0
 	constant MAX_DECAY : integer := 3192000;
 
 	type decay_array_t is array (0 to 7) of integer range 0 to MAX_DECAY;