diff options
Diffstat (limited to 'basys3/basys3.srcs/ppu_consts.vhd')
| -rw-r--r-- | basys3/basys3.srcs/ppu_consts.vhd | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/basys3/basys3.srcs/ppu_consts.vhd b/basys3/basys3.srcs/ppu_consts.vhd index c7786c4..48fab5a 100644 --- a/basys3/basys3.srcs/ppu_consts.vhd +++ b/basys3/basys3.srcs/ppu_consts.vhd @@ -10,6 +10,7 @@ package ppu_consts is constant PPU_RAM_BUS_DATA_WIDTH : natural := 16; -- RAM bus data width constant PPU_FG_SPRITE_COUNT : natural := 128; -- foreground sprites constant PPU_COLOR_OUTPUT_DEPTH : natural := 4; -- VGA output channel depth + constant PPU_RGB_COLOR_OUTPUT_DEPTH : natural := 3 * PPU_COLOR_OUTPUT_DEPTH; constant PPU_PALETTE_COLOR_WIDTH : natural := 3; -- palette index width (within sprite) constant PPU_PALETTE_INDEX_WIDTH : natural := 3; -- palette index width (palette table) constant PPU_PALETTE_CIDX_WIDTH : natural := (PPU_PALETTE_COLOR_WIDTH + PPU_PALETTE_INDEX_WIDTH); -- global palette index width @@ -30,8 +31,11 @@ package ppu_consts is constant PPU_SPRITE_PIDX_WIDTH : natural := 8; -- bits needed to identify horizontal and vertical pixel within sprite constant PPU_SPRITE_POS_H_WIDTH: natural := 4; -- bits needed to identify horizontal pixel within sprite constant PPU_SPRITE_POS_V_WIDTH: natural := 4; -- bits needed to identify vertical pixel within sprite - constant PPU_SCREEN_WIDTH : natural := 320; -- absolute screen width (pixels) - constant PPU_SCREEN_HEIGHT : natural := 240; -- absolute screen height (pixels) + constant PPU_SCREEN_WIDTH : natural := 320; -- absolute screen width (tiny pixels) + constant PPU_SCREEN_HEIGHT : natural := 240; -- absolute screen height (tiny pixels) + constant PPU_NATIVE_SCREEN_WIDTH : natural := 2 * PPU_SCREEN_WIDTH; -- screen width (native pixels) + constant PPU_NATIVE_SCREEN_HEIGHT : natural := 2 * PPU_SCREEN_WIDTH; -- screen height (native pixels) + constant PPU_DISPCTL_SLBUF_ADDR_WIDTH : natural := ceil_log2(2 * PPU_SCREEN_WIDTH); constant PPU_BG_CANVAS_TILES_H : natural := 40; -- tiles (horizontally) on background canvas constant PPU_BG_CANVAS_TILES_V : natural := 30; -- tiles (vertically) on background canvas constant PPU_BG_CANVAS_TILE_H_WIDTH : natural := 6; -- bits needed to describe horizontal bg tile index (grid coordinates) |