diff options
| author | lonkaars <loek@pipeframe.xyz> | 2023-03-08 22:31:26 +0100 |
|---|---|---|
| committer | lonkaars <loek@pipeframe.xyz> | 2023-03-08 22:31:26 +0100 |
| commit | 2a9b5d2ee3f8661a47849d574fdda6922568300d (patch) | |
| tree | bc445f220384ba3709592d477da9b8ac72c7cb11 /basys3/basys3.srcs/ppu_dispctl.vhd | |
| parent | 1e6f7c387dcaf0860988344d08cc4293b7132363 (diff) | |
ppu_dispctl test for valid VGA signal using DMT 640x480 @ 60
Diffstat (limited to 'basys3/basys3.srcs/ppu_dispctl.vhd')
| -rw-r--r-- | basys3/basys3.srcs/ppu_dispctl.vhd | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/basys3/basys3.srcs/ppu_dispctl.vhd b/basys3/basys3.srcs/ppu_dispctl.vhd index 725a6f2..a70a2e7 100644 --- a/basys3/basys3.srcs/ppu_dispctl.vhd +++ b/basys3/basys3.srcs/ppu_dispctl.vhd @@ -82,9 +82,9 @@ begin U_POS_Y <= resize(N_POS_Y / 2, U_POS_Y'length); ADDR_O <= std_logic_vector(resize(U_POS_X, ADDR_I'length)) when U_POS_Y(0) = '0' else std_logic_vector(resize(U_POS_X, ADDR_I'length) + PPU_SCREEN_WIDTH); - RO <= DATA_O(11 downto 8); - GO <= DATA_O(7 downto 4); - BO <= DATA_O(3 downto 0); + RO <= DATA_O(11 downto 8) when NACTIVE = '1' else (others => '0'); + GO <= DATA_O(7 downto 4) when NACTIVE = '1' else (others => '0'); + BO <= DATA_O(3 downto 0) when NACTIVE = '1' else (others => '0'); scanline_buffer : component ppu_dispctl_slbuf port map( clka => CLK, |