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scobra_top.vhd
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scobra_top.vhd
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--------------------------------------------------------------------------
-- Arcade: Super Cobra by gaz68 (Sept 2019)
-- https://github.com/gaz68
--------------------------------------------------------------------------
--
-- A simulation model of Scramble hardware
-- Copyright (c) MikeJ - Feb 2007
--
-- 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 CODE 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.
--
-- You are responsible for any legal issues arising from your use of this code.
--
-- The latest version of this file can be found at: www.fpgaarcade.com
--
-- Email support@fpgaarcade.com
--
-- Revision list
--
-- version 001 initial release
--
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;
entity SCOBRA_TOP is
port (
O_VIDEO_R : out std_logic_vector(3 downto 0);
O_VIDEO_G : out std_logic_vector(3 downto 0);
O_VIDEO_B : out std_logic_vector(3 downto 0);
O_HSYNC : out std_logic;
O_VSYNC : out std_logic;
O_HBLANK : out std_logic;
O_VBLANK : out std_logic;
O_AUDIO : out std_logic_vector(9 downto 0);
ip_dip_switch : in std_logic_vector(5 downto 1);
ip_1p : std_logic_vector(6 downto 0);
ip_2p : std_logic_vector(6 downto 0);
ip_service : std_logic;
ip_coin1 : std_logic;
ip_coin2 : std_logic;
dn_addr : in std_logic_vector(15 downto 0);
dn_data : in std_logic_vector(7 downto 0);
dn_wr : in std_logic;
RESET : in std_logic;
clk : in std_logic; -- 25
ena_12 : in std_logic; -- 6.25 x 2
ena_6 : in std_logic; -- 6.25 (inverted)
ena_6b : in std_logic; -- 6.25
ena_1_79 : in std_logic -- 1.786
);
end;
architecture RTL of SCOBRA_TOP is
-- ties to audio board
signal audio_addr : std_logic_vector(15 downto 0);
signal audio_data_out : std_logic_vector(7 downto 0);
signal audio_data_in : std_logic_vector(7 downto 0);
signal audio_data_oe_l : std_logic;
signal audio_rd_l : std_logic;
signal audio_wr_l : std_logic;
signal audio_iopc7 : std_logic;
signal audio_reset_l : std_logic;
begin
u_scobra : entity work.SCOBRA
port map (
--
O_VIDEO_R => O_VIDEO_R,
O_VIDEO_G => O_VIDEO_G,
O_VIDEO_B => O_VIDEO_B,
O_HSYNC => O_HSYNC,
O_VSYNC => O_VSYNC,
O_HBLANK => O_HBLANK,
O_VBLANK => O_VBLANK,
--
-- to audio board
--
O_ADDR => audio_addr,
O_DATA => audio_data_out,
I_DATA => audio_data_in,
I_DATA_OE_L => audio_data_oe_l,
O_RD_L => audio_rd_l,
O_WR_L => audio_wr_l,
O_IOPC7 => audio_iopc7,
O_RESET_WD_L => audio_reset_l,
--
dn_addr => dn_addr,
dn_data => dn_data,
dn_wr => dn_wr,
--
ENA => ena_6,
ENAB => ena_6b,
ENA_12 => ena_12,
--
RESET => reset,
CLK => clk
);
--
--
-- audio subsystem
--
u_audio : entity work.SCOBRA_AUDIO
port map (
--
I_ADDR => audio_addr,
I_DATA => audio_data_out,
O_DATA => audio_data_in,
O_DATA_OE_L => audio_data_oe_l,
--
I_RD_L => audio_rd_l,
I_WR_L => audio_wr_l,
I_IOPC7 => audio_iopc7,
--
O_AUDIO => O_AUDIO,
--
I_1P_CTRL => ip_1p, -- start, shoot1, shoot2, left,right,up,down
I_2P_CTRL => ip_2p, -- start, shoot1, shoot2, left,right,up,down
I_SERVICE => ip_service,
I_COIN1 => ip_coin1,
I_COIN2 => ip_coin2,
O_COIN_COUNTER => open,
--
I_DIP => ip_dip_switch,
--
dn_addr => dn_addr,
dn_data => dn_data,
dn_wr => dn_wr,
--
I_RESET_L => audio_reset_l,
ENA => ena_6,
ENA_1_79 => ena_1_79,
CLK => clk
);
--button_in(0) = Joystick Up
--button_in(1) = Joystick Down
--button_in(2) = Joystick Left
--button_in(3) = Joystick Right
--button_in(4) = Button Left
--button_in(5) = Button Down
--button_in(6) = Joystick Fire
--button_in(7) = Button Right
--Buttons are connected to ground and connect to 3.3V when pressed
--Joystick has internal pullup resistor and connects to ground when pressed
--A '0' on the input is active. Inputs are active low.
end RTL;