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_consts.vhd | |
| parent | 1e6f7c387dcaf0860988344d08cc4293b7132363 (diff) | |
ppu_dispctl test for valid VGA signal using DMT 640x480 @ 60
Diffstat (limited to 'basys3/basys3.srcs/ppu_consts.vhd')
| -rw-r--r-- | basys3/basys3.srcs/ppu_consts.vhd | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/basys3/basys3.srcs/ppu_consts.vhd b/basys3/basys3.srcs/ppu_consts.vhd index 846c7fb..8e9b494 100644 --- a/basys3/basys3.srcs/ppu_consts.vhd +++ b/basys3/basys3.srcs/ppu_consts.vhd @@ -52,15 +52,15 @@ package ppu_consts is 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 := 16; - constant PPU_VGA_H_SYNC : natural := 64; - constant PPU_VGA_H_PORCH_BACK : natural := 80; + constant PPU_VGA_H_PORCH_FRONT : natural := 8; + constant PPU_VGA_H_SYNC : natural := 96; + constant PPU_VGA_H_PORCH_BACK : natural := 40; constant PPU_VGA_H_BLANK : natural := PPU_VGA_H_PORCH_FRONT + PPU_VGA_H_SYNC + PPU_VGA_H_PORCH_BACK; constant PPU_VGA_H_TOTAL : natural := PPU_VGA_H_BLANK + PPU_VGA_H_ACTIVE; constant PPU_VGA_V_ACTIVE : natural := PPU_NATIVE_SCREEN_HEIGHT; - constant PPU_VGA_V_PORCH_FRONT : natural := 4; - constant PPU_VGA_V_SYNC : natural := 4; - constant PPU_VGA_V_PORCH_BACK : natural := 12; + constant PPU_VGA_V_PORCH_FRONT : natural := 2; + constant PPU_VGA_V_SYNC : natural := 2; + constant PPU_VGA_V_PORCH_BACK : natural := 25; constant PPU_VGA_V_BLANK : natural := PPU_VGA_V_PORCH_FRONT + PPU_VGA_V_SYNC + PPU_VGA_V_PORCH_BACK; constant PPU_VGA_V_TOTAL : natural := PPU_VGA_V_BLANK + PPU_VGA_V_ACTIVE; constant PPU_VGA_SIGNAL_PIXEL_IDX_MAX : natural := PPU_VGA_V_TOTAL * PPU_VGA_H_TOTAL; -- horizontal and vertical pixel clock index |