head	1.8;
access;
symbols
	rel_1_1:1.6
	rel_1_0:1.6
	rel_0_1_beta:1.5;
locks; strict;
comment	@# @;


1.8
date	2008.08.28.18.51.58;	author arniml;	state Exp;
branches;
next	1.7;
commitid	72c748b6f3cc4567;

1.7
date	2008.08.23.11.19.20;	author arniml;	state Exp;
branches;
next	1.6;
commitid	2c9c48aff2244567;

1.6
date	2006.06.11.13.49.18;	author arniml;	state Exp;
branches;
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commitid	43d9448c1f5c4567;

1.5
date	2006.06.05.20.04.11;	author arniml;	state Exp;
branches;
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commitid	4d8344848e3a4567;

1.4
date	2006.05.23.01.16.05;	author arniml;	state Exp;
branches;
next	1.3;
commitid	4835447262544567;

1.3
date	2006.05.20.02.49.04;	author arniml;	state Exp;
branches;
next	1.2;
commitid	28c2446e839f4567;

1.2
date	2006.05.17.00.38.31;	author arniml;	state Exp;
branches;
next	1.1;
commitid	1e99446a70854567;

1.1
date	2006.05.14.22.29.01;	author arniml;	state Exp;
branches;
next	;
commitid	78614467af294567;


desc
@@


1.8
log
@fixed mangled comment
@
text
@-------------------------------------------------------------------------------
--
-- T420 system toplevel.
--
-- $Id: t420.vhd,v 1.7 2008/08/23 11:19:20 arniml Exp $
-- $Name:  $
--
-- Copyright (c) 2006 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/t400/
--
-------------------------------------------------------------------------------

library ieee;
use ieee.std_logic_1164.all;

use work.t400_opt_pack.all;

entity t420 is

  generic (
    opt_ck_div_g         : integer := t400_opt_ck_div_8_c;
    opt_cko_g            : integer := t400_opt_cko_crystal_c;
    opt_l_out_type_7_g   : integer := t400_opt_out_type_std_c;
    opt_l_out_type_6_g   : integer := t400_opt_out_type_std_c;
    opt_l_out_type_5_g   : integer := t400_opt_out_type_std_c;
    opt_l_out_type_4_g   : integer := t400_opt_out_type_std_c;
    opt_l_out_type_3_g   : integer := t400_opt_out_type_std_c;
    opt_l_out_type_2_g   : integer := t400_opt_out_type_std_c;
    opt_l_out_type_1_g   : integer := t400_opt_out_type_std_c;
    opt_l_out_type_0_g   : integer := t400_opt_out_type_std_c;
    opt_microbus_g       : integer := t400_opt_no_microbus_c;
    opt_d_out_type_3_g   : integer := t400_opt_out_type_std_c;
    opt_d_out_type_2_g   : integer := t400_opt_out_type_std_c;
    opt_d_out_type_1_g   : integer := t400_opt_out_type_std_c;
    opt_d_out_type_0_g   : integer := t400_opt_out_type_std_c;
    opt_g_out_type_3_g   : integer := t400_opt_out_type_std_c;
    opt_g_out_type_2_g   : integer := t400_opt_out_type_std_c;
    opt_g_out_type_1_g   : integer := t400_opt_out_type_std_c;
    opt_g_out_type_0_g   : integer := t400_opt_out_type_std_c;
    opt_so_output_type_g : integer := t400_opt_out_type_std_c;
    opt_sk_output_type_g : integer := t400_opt_out_type_std_c
  );
  port (
    ck_i      : in    std_logic;
    ck_en_i   : in    std_logic;
    reset_n_i : in    std_logic;
    cko_i     : in    std_logic;
    io_l_b    : inout std_logic_vector(7 downto 0);
    io_d_o    : out   std_logic_vector(3 downto 0);
    io_g_b    : inout std_logic_vector(3 downto 0);
    io_in_i   : in    std_logic_vector(3 downto 0);
    si_i      : in    std_logic;
    so_o      : out   std_logic;
    sk_o      : out   std_logic
  );

end t420;


use work.t400_system_comp_pack.t420_notri;

architecture struct of t420 is

  signal io_l_from_t420_s,
         io_l_en_s         : std_logic_vector(7 downto 0);
  signal io_d_from_t420_s,
         io_d_en_s         : std_logic_vector(3 downto 0);
  signal io_g_from_t420_s,
         io_g_en_s         : std_logic_vector(3 downto 0);

  signal so_s,
         so_en_s           : std_logic;
  signal sk_s,
         sk_en_s           : std_logic;

begin

  -----------------------------------------------------------------------------
  -- T420 without tri-states
  -----------------------------------------------------------------------------
  t420_notri_b : t420_notri
    generic map (
      opt_type_g           => t400_opt_type_420_c,
      opt_ck_div_g         => opt_ck_div_g,
      opt_cko_g            => opt_cko_g,
      opt_l_out_type_7_g   => opt_l_out_type_7_g,
      opt_l_out_type_6_g   => opt_l_out_type_6_g,
      opt_l_out_type_5_g   => opt_l_out_type_5_g,
      opt_l_out_type_4_g   => opt_l_out_type_4_g,
      opt_l_out_type_3_g   => opt_l_out_type_3_g,
      opt_l_out_type_2_g   => opt_l_out_type_2_g,
      opt_l_out_type_1_g   => opt_l_out_type_1_g,
      opt_l_out_type_0_g   => opt_l_out_type_0_g,
      opt_microbus_g       => opt_microbus_g,
      opt_d_out_type_3_g   => opt_d_out_type_3_g,
      opt_d_out_type_2_g   => opt_d_out_type_2_g,
      opt_d_out_type_1_g   => opt_d_out_type_1_g,
      opt_d_out_type_0_g   => opt_d_out_type_0_g,
      opt_g_out_type_3_g   => opt_g_out_type_3_g,
      opt_g_out_type_2_g   => opt_g_out_type_2_g,
      opt_g_out_type_1_g   => opt_g_out_type_1_g,
      opt_g_out_type_0_g   => opt_g_out_type_0_g,
      opt_so_output_type_g => opt_so_output_type_g,
      opt_sk_output_type_g => opt_sk_output_type_g
    )
    port map (
      ck_i      => ck_i,
      ck_en_i   => ck_en_i,
      reset_n_i => reset_n_i,
      cko_i     => cko_i,
      io_l_i    => io_l_b,
      io_l_o    => io_l_from_t420_s,
      io_l_en_o => io_l_en_s,
      io_d_o    => io_d_from_t420_s,
      io_d_en_o => io_d_en_s,
      io_g_i    => io_g_b,
      io_g_o    => io_g_from_t420_s,
      io_g_en_o => io_g_en_s,
      io_in_i   => io_in_i,
      si_i      => si_i,
      so_o      => so_s,
      so_en_o   => so_en_s,
      sk_o      => sk_s,
      sk_en_o   => sk_en_s
    );


  -----------------------------------------------------------------------------
  -- Tri-states for output drivers
  -----------------------------------------------------------------------------
  io_l_tri: for idx in 7 downto 0 generate
    io_l_b(idx)  <=   io_l_from_t420_s(idx)
                    when io_l_en_s(idx) = '1' else
                      'Z';
  end generate;
  --
  io_d_tri: for idx in 3 downto 0 generate
    io_d_o(idx)  <=   io_d_from_t420_s(idx)
                    when io_d_en_s(idx) = '1' else
                      'Z';
  end generate;
  --
  io_g_tri: for idx in 3 downto 0 generate
    io_g_b(idx)  <=   io_g_from_t420_s(idx)
                    when io_g_en_s(idx) = '1' else
                      'Z';
  end generate;
  --
  so_o           <=   so_s
                    when so_en_s = '1' else
                      'Z';
  --
  sk_o           <=   sk_s
                    when sk_en_s = '1' else
                      'Z';

end struct;


-------------------------------------------------------------------------------
-- File History:
--
-- $Log: t420.vhd,v $
-- Revision 1.7  2008/08/23 11:19:20  arniml
-- added name keyword
--
-- Revision 1.6  2006/06/11 13:49:18  arniml
-- * hand generic opt_type_g down to t420_notri
-- * full generic list
--
-- Revision 1.5  2006/06/05 20:04:11  arniml
-- connect microbus generic
--
-- Revision 1.4  2006/05/23 01:16:05  arniml
-- routi CKO to t400_core
--
-- Revision 1.3  2006/05/20 02:49:04  arniml
-- select CK divide by 8
--
-- Revision 1.2  2006/05/17 00:38:31  arniml
-- connect missing input direction for IO G
--
-- Revision 1.1  2006/05/14 22:29:01  arniml
-- initial check-in
--
-------------------------------------------------------------------------------
@


1.7
log
@added name keyword
@
text
@d5 2
a6 2
-- $Id: t420.vhd,v 1.6 2006/06/11 13:49:18 arniml Exp $
-- $Name$
d32 1
a32 1
- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
d198 3
@


1.6
log
@* hand generic opt_type_g down to t420_notri
* full generic list
@
text
@d5 2
a6 1
-- $Id: t420.vhd,v 1.5 2006/06/05 20:04:11 arniml Exp $
d32 1
a32 1
-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
d198 4
@


1.5
log
@connect microbus generic
@
text
@d5 1
a5 1
-- $Id: t420.vhd,v 1.4 2006/05/23 01:16:05 arniml Exp $
d65 2
d69 1
d116 1
d128 2
a129 2
      opt_d_out_type_3_g   => t400_opt_out_type_std_c,
      opt_d_out_type_2_g   => t400_opt_out_type_std_c,
d132 1
a132 1
      opt_g_out_type_3_g   => t400_opt_out_type_std_c,
d197 3
@


1.4
log
@routi CKO to t400_core
@
text
@d5 1
a5 1
-- $Id: t420.vhd,v 1.3 2006/05/20 02:49:04 arniml Exp $
d64 1
d123 1
d193 3
@


1.3
log
@select CK divide by 8
@
text
@d5 1
a5 1
-- $Id: t420.vhd,v 1.2 2006/05/17 00:38:31 arniml Exp $
d55 1
d76 1
a104 2
  signal gnd_s             : std_logic;

a106 2
  gnd_s <= '0';

d113 1
a113 1
      opt_cko_g            => t400_opt_cko_crystal_c,
d137 1
a137 1
      cko_i     => gnd_s,
d191 3
@


1.2
log
@connect missing input direction for IO G
@
text
@d5 1
a5 1
-- $Id: t420.vhd,v 1.1 2006/05/14 22:29:01 arniml Exp $
d54 1
a54 1
    opt_ck_div_g         : integer := t400_opt_ck_div_16_c;
d193 3
@


1.1
log
@initial check-in
@
text
@d5 1
a5 1
-- $Id$
d95 1
a95 2
  signal io_g_to_t420_s,
         io_g_from_t420_s,
d145 1
a145 1
      io_g_i    => io_g_to_t420_s,
d192 4
a195 1
-- $Log$
@