Subversion Repositories w11

-- $Id: pdp11_dmhbpt.vhd 702 2015-07-19 17:36:09Z mueller $

--

-- Copyright 2015- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>

--

-- This program is free software; you may redistribute and/or modify it under

-- the terms of the GNU General Public License as published by the Free

-- Software Foundation, either version 2, or at your option any later version.

--

-- This program is distributed in the hope that it will be useful, but

-- WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY

-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

-- for complete details.

--

------------------------------------------------------------------------------

-- Module Name:    pdp11_dmhbpt - syn

-- Description:    pdp11: debug&moni: hardware breakpoint

--

-- Dependencies:   pdp11_dmhbpt_unit

--                 rbus/rb_sres_or_4

-- Test bench:     -

--

-- Target Devices: generic

-- Tool versions:  ise 14.7; viv 2014.4; ghdl 0.31

--

-- Synthesized (xst):

-- Date         Rev  ise         Target      flop lutl lutm slic t peri

-- 2015-07-12   700 14.7  131013 xc6slx16-2    78  133    0   42 s  3.8 (N=2)

--

-- Revision History: -

-- Date         Rev Version  Comment

-- 2015-07-19   702   1.0    Initial version

-- 2015-07-05   698   0.1    First draft

------------------------------------------------------------------------------

library ieee;

use ieee.std_logic_1164.all;

use ieee.numeric_std.all;

use work.slvtypes.all;

use work.rblib.all;

use work.pdp11.all;

-- ----------------------------------------------------------------------------

entity pdp11_dmhbpt is                  -- debug&moni: hardware breakpoint

  generic (

    RB_ADDR : slv16 := slv(to_unsigned(16#0050#,16));

    NUNIT : natural := 2);

  port (

    CLK : in slbit;                     -- clock

    RESET : in slbit;                   -- reset

    RB_MREQ : in rb_mreq_type;          -- rbus: request

    RB_SRES : out rb_sres_type;         -- rbus: response

    DM_STAT_SE : in dm_stat_se_type;    -- debug and monitor status - sequencer

    DM_STAT_DP : in dm_stat_dp_type;    -- debug and monitor status - data path

    DM_STAT_VM : in dm_stat_vm_type;    -- debug and monitor status - vmbox

    DM_STAT_CO : in dm_stat_co_type;    -- debug and monitor status - core

    HBPT : out slbit                    -- hw break flag

  );

end pdp11_dmhbpt;

architecture syn of pdp11_dmhbpt is

  type sres_array_type is array (3 downto 0) of rb_sres_type;

  signal SRES_ARRAY : sres_array_type:= (others=>rb_sres_init);

  signal HBPT_SUM : slv(NUNIT-1 downto 0) := (others=>'0');

  constant hbptzero : slv(HBPT_SUM'range) := (others=>'0');

  begin

  assert NUNIT>=1 and NUNIT<=4

    report "assert(NUNIT>=1 and NUNIT<=4): unsupported NUNIT"

    severity failure;

  GU: for i in NUNIT-1 downto 0 generate

    HBPT : pdp11_dmhbpt_unit

    generic map (

      RB_ADDR => RB_ADDR,

      INDEX   => i)

    port map (

      CLK        => CLK,

      RESET      => RESET,

      RB_MREQ    => RB_MREQ,

      RB_SRES    => SRES_ARRAY(i),

      DM_STAT_SE => DM_STAT_SE,

      DM_STAT_DP => DM_STAT_DP,

      DM_STAT_VM => DM_STAT_VM,

      DM_STAT_CO => DM_STAT_CO,

      HBPT       => HBPT_SUM(i)

    );

  end generate GU;

  GD: for i in 3 downto NUNIT generate

    SRES_ARRAY(i) <= rb_sres_init;

  end generate GD;

  RB_SRES_OR : rb_sres_or_4

    port map (

      RB_SRES_1  => SRES_ARRAY(0),

      RB_SRES_2  => SRES_ARRAY(1),

      RB_SRES_3  => SRES_ARRAY(2),

      RB_SRES_4  => SRES_ARRAY(3),

      RB_SRES_OR => RB_SRES

    );

  HBPT <= '1' when HBPT_SUM /= hbptzero else '0';

end syn;