From 29108f38c5f885412b0a75ae46b85720946cfdb5 Mon Sep 17 00:00:00 2001 From: lonkaars Date: Mon, 20 Feb 2023 15:31:12 +0100 Subject: update TMM data width + update memory map (WIP ppu_sprite_bg) --- basys3/basys3.srcs/ppu_consts.vhd | 36 +++++++++++++++++++++++------------- 1 file changed, 23 insertions(+), 13 deletions(-) (limited to 'basys3/basys3.srcs/ppu_consts.vhd') diff --git a/basys3/basys3.srcs/ppu_consts.vhd b/basys3/basys3.srcs/ppu_consts.vhd index ab2ccf1..f4d428e 100644 --- a/basys3/basys3.srcs/ppu_consts.vhd +++ b/basys3/basys3.srcs/ppu_consts.vhd @@ -1,22 +1,32 @@ +-- https://docs.google.com/spreadsheets/d/1MU6K4c4PtMR_JXIpc3I0ZJdLZNnoFO7G2P3olCz6LSc package ppu_consts is constant PPU_RAM_BUS_ADDR_WIDTH : natural := 16; -- RAM bus address width constant PPU_RAM_BUS_DATA_WIDTH : natural := 16; -- RAM bus data width constant PPU_FG_SPRITE_COUNT : natural := 128; -- amount of foreground sprites constant PPU_COLOR_OUTPUT_DEPTH : natural := 4; -- VGA output channel depth - constant PPU_PALETTE_IDX_WIDTH : natural := 3; -- palette index width (within sprite) - constant PPU_PALETTE_WIDTH : natural := 3; -- palette index width (palette table) - constant PPU_PALETTE_CIDX_WIDTH : natural := PPU_PALETTE_IDX_WIDTH + PPU_PALETTE_WIDTH; -- global palette index width - constant PPU_TMM_ADDR_WIDTH : natural := 16; - constant PPU_TMM_DATA_WIDTH : natural := 16; - constant PPU_BAM_ADDR_WIDTH : natural := 11; - constant PPU_BAM_DATA_WIDTH : natural := 15; - constant PPU_FAM_ADDR_WIDTH : natural := 8; - constant PPU_FAM_DATA_WIDTH : natural := 16; - constant PPU_PAL_ADDR_WIDTH : natural := 6; - constant PPU_PAL_DATA_WIDTH : natural := 12; - constant PPU_AUX_ADDR_WIDTH : natural := 1; - constant PPU_AUX_DATA_WIDTH : natural := 16; + 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 + constant PPU_TMM_ADDR_WIDTH : natural := 16; -- tilemap memory ram bus address width + constant PPU_TMM_DATA_WIDTH : natural := 15; -- tilemap memory ram bus data width + constant PPU_BAM_ADDR_WIDTH : natural := 11; -- background attribute memory ram bus address width + constant PPU_BAM_DATA_WIDTH : natural := 15; -- background attribute memory ram bus data width + constant PPU_FAM_ADDR_WIDTH : natural := 8; -- foreground attribute memory ram bus address width + constant PPU_FAM_DATA_WIDTH : natural := 16; -- foreground attribute memory ram bus data width + constant PPU_PAL_ADDR_WIDTH : natural := 6; -- palette memory ram bus address width + constant PPU_PAL_DATA_WIDTH : natural := 12; -- palette memory ram bus data width + constant PPU_AUX_ADDR_WIDTH : natural := 1; -- auxiliary memory ram bus address width + constant PPU_AUX_DATA_WIDTH : natural := 16; -- auxiliary memory ram bus data width constant PPU_POS_H_WIDTH : natural := 9; -- amount of bits for horizontal screen offset constant PPU_POS_V_WIDTH : natural := 8; -- amount of bits for vertical screen offset + constant PPU_SPRITE_WIDTH : natural := 16; -- sprite width (pixels) + constant PPU_SPRITE_HEIGHT : natural := 16; -- sprite height (pixels) + constant PPU_SCREEN_WIDTH : natural := 320; -- absolute screen width (pixels) + constant PPU_SCREEN_HEIGHT : natural := 240; -- absolute screen height (pixels) + constant PPU_BG_CANVAS_TILES_H : natural := 40; -- amount of tiles (horizontally) on background canvas + constant PPU_BG_CANVAS_TILES_V : natural := 30; -- amount of tiles (vertically) on background canvas + constant PPU_TILE_INDEX_WIDTH : natural := 10; -- amount of bits needed to index a tile from TMM memory + constant PPU_PIXELS_PER_TILE_WORD : natural := 5; -- amount of pixels defined in one word in TMM memory + constant PPU_TILE_SIZE : natural := 48; end package ppu_consts; -- cgit v1.2.3