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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_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
end package ppu_consts;
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