Added sound generator support and interface to WM8731L audio codec. Uses SN76489 implementation from FPGA arcade.

1 files changed, 96 insertions, 0 deletions

diff --git a/sn76489-1.0/sn76489_comp_pack-p.vhd b/sn76489-1.0/sn76489_comp_pack-p.vhd
new file mode 100644
index 0000000..06b12c8
--- /dev/null
+++ b/sn76489-1.0/sn76489_comp_pack-p.vhd
@@ -0,0 +1,96 @@
+-------------------------------------------------------------------------------
+--
+-- $Id: sn76489_comp_pack-p.vhd,v 1.6 2006/02/27 20:30:10 arnim Exp $
+--
+-- Copyright (c) 2005, 2006, Arnim Laeuger (arnim.laeuger@gmx.net)
+--
+-- All rights reserved
+--
+-------------------------------------------------------------------------------
+
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+package sn76489_comp_pack is
+
+  component sn76489_attenuator
+    port (
+      attenuation_i : in  std_logic_vector(0 to 3);
+      factor_i      : in  signed(0 to 1);
+      product_o     : out signed(0 to 7)
+    );
+  end component;
+
+  component sn76489_tone
+    port (
+      clock_i  : in  std_logic;
+      clk_en_i : in  boolean;
+      res_n_i  : in  std_logic;
+      we_i     : in  boolean;
+      d_i      : in  std_logic_vector(0 to 7);
+      r2_i     : in  std_logic;
+      ff_o     : out std_logic;
+      tone_o   : out signed(0 to 7)
+    );
+  end component;
+
+  component sn76489_noise
+    port (
+      clock_i    : in  std_logic;
+      clk_en_i   : in  boolean;
+      res_n_i    : in  std_logic;
+      we_i       : in  boolean;
+      d_i        : in  std_logic_vector(0 to 7);
+      r2_i       : in  std_logic;
+      tone3_ff_i : in  std_logic;
+      noise_o    : out signed(0 to 7)
+    );
+  end component;
+
+  component sn76489_latch_ctrl
+    port (
+      clock_i    : in  std_logic;
+      clk_en_i   : in  boolean;
+      res_n_i    : in  std_logic;
+      ce_n_i     : in  std_logic;
+      we_n_i     : in  std_logic;
+      d_i        : in  std_logic_vector(0 to 7);
+      ready_o    : out std_logic;
+      tone1_we_o : out boolean;
+      tone2_we_o : out boolean;
+      tone3_we_o : out boolean;
+      noise_we_o : out boolean;
+      r2_o       : out std_logic
+    );
+  end component;
+
+  component sn76489_clock_div
+    generic (
+      clock_div_16_g : integer := 1
+    );
+    port (
+      clock_i    : in  std_logic;
+      clock_en_i : in  std_logic;
+      res_n_i    : in  std_logic;
+      clk_en_o   : out boolean
+    );
+  end component;
+
+  component sn76489_top
+    generic (
+      clock_div_16_g : integer := 1
+    );
+    port (
+      clock_i    : in  std_logic;
+      clock_en_i : in  std_logic;
+      res_n_i    : in  std_logic;
+      ce_n_i     : in  std_logic;
+      we_n_i     : in  std_logic;
+      ready_o    : out std_logic;
+      d_i        : in  std_logic_vector(0 to 7);
+      aout_o     : out signed(0 to 7)
+    );
+  end component;
+
+end sn76489_comp_pack;