diff options
Diffstat (limited to 'basys3/basys3.srcs/ppu_sprite_bg.vhd')
| -rw-r--r-- | basys3/basys3.srcs/ppu_sprite_bg.vhd | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/basys3/basys3.srcs/ppu_sprite_bg.vhd b/basys3/basys3.srcs/ppu_sprite_bg.vhd index 1a91b5e..cc9c24b 100644 --- a/basys3/basys3.srcs/ppu_sprite_bg.vhd +++ b/basys3/basys3.srcs/ppu_sprite_bg.vhd @@ -62,13 +62,14 @@ architecture Behavioral of ppu_sprite_bg is signal PIXEL_BIT_OFFSET : integer := 0; -- pixel index within word of TMM signal TMM_DATA_PAL_IDX : std_logic_vector(PPU_PALETTE_COLOR_WIDTH-1 downto 0); -- color of palette signal T_CIDX : std_logic_vector(PPU_PALETTE_CIDX_WIDTH-1 downto 0) := (others => '0'); -- output color buffer/register + signal BAM_ADDR_EN, TMM_ADDR_EN : boolean := false; begin -- output drivers CIDX <= T_CIDX when OE = '1' 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; + BAM_ADDR <= R_BAM_ADDR when BAM_ADDR_EN else (others => 'Z'); + TMM_ADDR <= R_TMM_ADDR when TMM_ADDR_EN else (others => 'Z'); -- CIDX combination T_CIDX <= BAM_DATA_COL_IDX & TMM_DATA_PAL_IDX; @@ -115,6 +116,12 @@ begin R_TMM_ADDR <= (others => '0'); R_TMM_DATA <= (others => '0'); elsif rising_edge(CLK) then + BAM_ADDR_EN <= true when PL_STAGE = PL_BG_BAM_ADDR else false; + TMM_ADDR_EN <= true when PL_STAGE = PL_BG_TMM_ADDR else false; + -- R_BAM_ADDR <= T_BAM_ADDR; + -- R_BAM_DATA <= T_BAM_DATA; + -- R_TMM_ADDR <= T_TMM_ADDR; + -- R_TMM_DATA <= T_TMM_DATA; case PL_STAGE is when PL_BG_BAM_ADDR => R_BAM_ADDR <= T_BAM_ADDR; |