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[/] [gamepads/] [trunk/] [snespad/] [rtl/] [vhdl/] [snespad.vhd] - Rev 7
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------------------------------------------------------------------------------- -- -- SNESpad controller core -- -- $Id: snespad.vhd,v 1.2 2004-10-05 18:22:40 arniml Exp $ -- -- Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org) -- -- All rights reserved -- -- Redistribution and use in source and synthezised forms, with or without -- modification, are permitted provided that the following conditions are met: -- -- Redistributions of source code must retain the above copyright notice, -- this list of conditions and the following disclaimer. -- -- Redistributions in synthesized form must reproduce the above copyright -- notice, this list of conditions and the following disclaimer in the -- documentation and/or other materials provided with the distribution. -- -- Neither the name of the author nor the names of other contributors may -- be used to endorse or promote products derived from this software without -- specific prior written permission. -- -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, -- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR -- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE -- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -- POSSIBILITY OF SUCH DAMAGE. -- -- Please report bugs to the author, but before you do so, please -- make sure that this is not a derivative work and that -- you have the latest version of this file. -- -- The latest version of this file can be found at: -- http://www.opencores.org/cvsweb.shtml/gamepads/ -- -- The project homepage is located at: -- http://www.opencores.org/projects.cgi/web/gamepads/overview -- ------------------------------------------------------------------------------- library ieee; use ieee.std_logic_1164.all; entity snespad is generic ( -- number of pads connected to this core num_pads_g : natural := 1; -- active level of reset_i reset_level_g : natural := 0; -- active level of the button outputs button_level_g : natural := 0; -- number of clk_i periods during 6us clocks_per_6us_g : natural := 6 ); port ( -- System Interface ------------------------------------------------------- clk_i : in std_logic; reset_i : in std_logic; -- Gamepad Interface ------------------------------------------------------ pad_clk_o : out std_logic; pad_latch_o : out std_logic; pad_data_i : in std_logic_vector(num_pads_g-1 downto 0); -- Buttons Interface ------------------------------------------------------ but_a_o : out std_logic_vector(num_pads_g-1 downto 0); but_b_o : out std_logic_vector(num_pads_g-1 downto 0); but_x_o : out std_logic_vector(num_pads_g-1 downto 0); but_y_o : out std_logic_vector(num_pads_g-1 downto 0); but_start_o : out std_logic_vector(num_pads_g-1 downto 0); but_sel_o : out std_logic_vector(num_pads_g-1 downto 0); but_tl_o : out std_logic_vector(num_pads_g-1 downto 0); but_tr_o : out std_logic_vector(num_pads_g-1 downto 0); but_up_o : out std_logic_vector(num_pads_g-1 downto 0); but_down_o : out std_logic_vector(num_pads_g-1 downto 0); but_left_o : out std_logic_vector(num_pads_g-1 downto 0); but_right_o : out std_logic_vector(num_pads_g-1 downto 0) ); end snespad; architecture struct of snespad is component snespad_ctrl generic ( reset_level_g : natural := 0; clocks_per_6us_g : natural := 6 ); port ( clk_i : in std_logic; reset_i : in std_logic; clk_en_o : out boolean; shift_buttons_o : out boolean; save_buttons_o : out boolean; pad_clk_o : out std_logic; pad_latch_o : out std_logic ); end component snespad_ctrl; component snespad_pad generic ( reset_level_g : natural := 0; button_level_g : natural := 0 ); port ( clk_i : in std_logic; reset_i : in std_logic; clk_en_i : in boolean; shift_buttons_i : in boolean; save_buttons_i : in boolean; pad_data_i : in std_logic; but_a_o : out std_logic; but_b_o : out std_logic; but_x_o : out std_logic; but_y_o : out std_logic; but_start_o : out std_logic; but_sel_o : out std_logic; but_tl_o : out std_logic; but_tr_o : out std_logic; but_up_o : out std_logic; but_down_o : out std_logic; but_left_o : out std_logic; but_right_o : out std_logic ); end component snespad_pad; signal clk_en_s : boolean; signal shift_buttons_s : boolean; signal save_buttons_s : boolean; begin ctrl_b : snespad_ctrl generic map ( reset_level_g => reset_level_g, clocks_per_6us_g => clocks_per_6us_g ) port map ( clk_i => clk_i, reset_i => reset_i, clk_en_o => clk_en_s, shift_buttons_o => shift_buttons_s, save_buttons_o => save_buttons_s, pad_clk_o => pad_clk_o, pad_latch_o => pad_latch_o ); pads: for i in 0 to num_pads_g-1 generate pad_b : snespad_pad generic map ( reset_level_g => reset_level_g, button_level_g => button_level_g ) port map ( clk_i => clk_i, reset_i => reset_i, clk_en_i => clk_en_s, shift_buttons_i => shift_buttons_s, save_buttons_i => save_buttons_s, pad_data_i => pad_data_i(i), but_a_o => but_a_o(i), but_b_o => but_b_o(i), but_x_o => but_x_o(i), but_y_o => but_y_o(i), but_start_o => but_start_o(i), but_sel_o => but_sel_o(i), but_tl_o => but_tl_o(i), but_tr_o => but_tr_o(i), but_up_o => but_up_o(i), but_down_o => but_down_o(i), but_left_o => but_left_o(i), but_right_o => but_right_o(i) ); end generate; end struct; ------------------------------------------------------------------------------- -- File History: -- -- $Log: not supported by cvs2svn $ -- Revision 1.1 2004/10/05 17:01:27 arniml -- initial check-in -- -------------------------------------------------------------------------------
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