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-- $Id: tbd_pdp11core.vhd 674 2015-05-04 16:17:40Z mueller $

--

-- Copyright 2007-2015 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:    tbd_pdp11core - syn

-- Description:    Wrapper for pdp11_core to avoid records. It has a port

--                 interface which will not be modified by xst synthesis

--                 (no records, no generic port).

--

-- Dependencies:   genlib/clkdivce

--                 pdp11_core

--                 pdp11_bram

--                 ibus/ibdr_minisys

--                 pdp11_tmu_sb           [sim only]

--

-- To test:        pdp11_core

--

-- Target Devices: generic

-- Tool versions:  xst 8.2-14.7; ghdl 0.18-0.31

--

-- Synthesized (xst):

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

-- 2010-06-13   305  11.4   L68  xc3s1000-4   601 2504  206 1428 s 18.6

-- 2008-03-01   120  8.2.03 I34  xc3s1000-4   679 2562  206 1465 s 18.5

-- 2008-01-06   111  8.2.03 I34  xc3s1000-4   605 2324  164 1297 s 18.7

-- 2007-12-30   107  8.2.03 I34  xc3s1000-4   536 2119  119 1184 s 19.3

-- 2007-10-27    92  9.2.02 J39  xc3s1000-4  INTERNAL_ERROR -> blog_webpack

-- 2007-10-27    92  9.1    J30  xc3s1000-4   503 2021  119    - t 18.7

-- 2007-10-27    92  8.2.03 I34  xc3s1000-4   534 2091  119 1170 s 19.3

-- 2007-10-27    92  8.1.03 I27  xc3s1000-4   557 2186  119    - s 18.6 

--

-- Revision History: 

-- Date         Rev Version  Comment

-- 2015-05-03   674   1.6    start/stop/suspend overhaul

-- 2011-11-18   427   1.5.1  now numeric_std clean

-- 2010-12-30   351   1.5    rename tbd_pdp11_core -> tbd_pdp11core

-- 2010-10-23   335   1.4.2  rename RRI_LAM->RB_LAM;

-- 2010-06-20   307   1.4.1  add CP_ADDR_racc, CP_ADDR_be port

-- 2010-06-13   305   1.4    add CP_ADDR_... in ports; add CP_CNTL_rnum in port

-- 2010-06-11   303   1.3.9  use IB_MREQ.racc instead of RRI_REQ

-- 2009-07-12   233   1.3.8  adapt to ibdr_minisys interface changes

-- 2009-05-10   214   1.3.7  use pdp11_tmu_sb instead of pdp11_tmu

-- 2008-08-22   161   1.3.6  use iblib, ibdlib

-- 2008-05-03   143   1.3.5  rename _cpursta->_cpurust

-- 2008-04-27   140   1.3.4  use cpursta interface, remove cpufail

-- 2008-04-19   137   1.3.3  add DM_STAT_(DP|VM|CO|SY) signals, add pdp11_tmu

-- 2008-04-18   136   1.3.2  add RESET for ibdr_minisys

-- 2008-02-23   118   1.3.1  use sys_conf for bram size

-- 2008-02-17   117   1.3    adapt to em_ core interface; use pdp11_bram

-- 2008-01-20   112   1.2.1  rename clkgen->clkdivce; use ibdr_minisys, BRESET;

-- 2008-01-06   111   1.2    add some external devices: KW11L, DL11, RK11

-- 2007-12-30   107   1.1    use IB_MREQ/IB_SRES interface now; remove DMA port

-- 2007-09-23    85   1.0    Initial version 

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

library ieee;

use ieee.std_logic_1164.all;

use ieee.numeric_std.all;

use work.slvtypes.all;

use work.genlib.all;

use work.iblib.all;

use work.ibdlib.all;

use work.pdp11.all;

use work.sys_conf.all;

entity tbd_pdp11core is               -- full core [no records]

  port (

    CLK : in slbit;                   -- clock

    RESET : in slbit;                 -- reset

    CP_CNTL_req : in slbit;           -- console control port

    CP_CNTL_func : in slv5;           -- console control port

    CP_CNTL_rnum : in slv3;           -- console control port

    CP_ADDR_addr : in slv22_1;        -- console address port

    CP_ADDR_racc : in slbit;          -- console address port

    CP_ADDR_be   : in slv2;           -- console address port

    CP_ADDR_ena_22bit : in slbit;     -- console address port

    CP_ADDR_ena_ubmap : in slbit;     -- console address port

    CP_DIN : in slv16;                -- console data in

    CP_STAT_cmdbusy : out slbit;      -- console status port

    CP_STAT_cmdack : out slbit;       -- console status port

    CP_STAT_cmderr : out slbit;       -- console status port

    CP_STAT_cmdmerr : out slbit;      -- console status port

    CP_STAT_cpugo : out slbit;        -- console status port

    CP_STAT_cpustep : out slbit;      -- console status port

    CP_STAT_cpuwait : out slbit;      -- console status port

    CP_STAT_cpususp : out slbit;      -- console status port

    CP_STAT_cpurust : out slv4;       -- console status port

    CP_STAT_suspint : out slbit;      -- console status port

    CP_STAT_suspext : out slbit;      -- console status port

    CP_DOUT : out slv16               -- console data out

  );

end tbd_pdp11core;

architecture syn of tbd_pdp11core is

  signal CE_USEC : slbit := '0';

  signal EI_PRI  : slv3 := (others=>'0');

  signal EI_VECT : slv9_2 := (others=>'0');

  signal EI_ACKM : slbit := '0';

  signal CP_CNTL : cp_cntl_type := cp_cntl_init;

  signal CP_ADDR : cp_addr_type := cp_addr_init;

  signal CP_STAT : cp_stat_type := cp_stat_init;

  signal EM_MREQ : em_mreq_type := em_mreq_init;

  signal EM_SRES : em_sres_type := em_sres_init;

  signal BRESET  : slbit := '0';

  signal IB_MREQ_M : ib_mreq_type := ib_mreq_init;

  signal IB_SRES_M : ib_sres_type := ib_sres_init;

  signal DM_STAT_DP : dm_stat_dp_type := dm_stat_dp_init;

  signal DM_STAT_VM : dm_stat_vm_type := dm_stat_vm_init;

  signal DM_STAT_CO : dm_stat_co_type := dm_stat_co_init;

  signal DM_STAT_SY : dm_stat_sy_type := dm_stat_sy_init;

begin

  CP_CNTL.req  <= CP_CNTL_req;

  CP_CNTL.func <= CP_CNTL_func;

  CP_CNTL.rnum <= CP_CNTL_rnum;

  CP_ADDR.addr      <= CP_ADDR_addr;

  CP_ADDR.racc      <= CP_ADDR_racc;

  CP_ADDR.be        <= CP_ADDR_be;

  CP_ADDR.ena_22bit <= CP_ADDR_ena_22bit;

  CP_ADDR.ena_ubmap <= CP_ADDR_ena_ubmap;

  CP_STAT_cmdbusy <= CP_STAT.cmdbusy;

  CP_STAT_cmdack  <= CP_STAT.cmdack;

  CP_STAT_cmderr  <= CP_STAT.cmderr;

  CP_STAT_cmdmerr <= CP_STAT.cmdmerr;

  CP_STAT_cpugo   <= CP_STAT.cpugo;

  CP_STAT_cpustep <= CP_STAT.cpustep;

  CP_STAT_cpuwait <= CP_STAT.cpuwait;

  CP_STAT_cpususp <= CP_STAT.cpususp;

  CP_STAT_cpurust <= CP_STAT.cpurust;

  CP_STAT_suspint <= CP_STAT.suspint;

  CP_STAT_suspext <= CP_STAT.suspext;

  CLKDIV : clkdivce

    generic map (

      CDUWIDTH => 6,

      USECDIV => 50,

      MSECDIV => 1000)

    port map (

      CLK     => CLK,

      CE_USEC => CE_USEC,

      CE_MSEC => open

    );

  PDP11 : pdp11_core

    port map (

      CLK     => CLK,

      RESET   => RESET,

      CP_CNTL => CP_CNTL,

      CP_ADDR => CP_ADDR,

      CP_DIN  => CP_DIN,

      CP_STAT => CP_STAT,

      CP_DOUT => CP_DOUT,

      ESUSP_O => open,                  -- not tested

      ESUSP_I => '0',                   -- dito

      ITIMER  => open,                  -- dito

      EBREAK  => '0',                   -- dito

      DBREAK  => '0',                   -- dito

      EI_PRI  => EI_PRI,

      EI_VECT => EI_VECT,

      EI_ACKM => EI_ACKM,

      EM_MREQ => EM_MREQ,

      EM_SRES => EM_SRES,

      BRESET  => BRESET,

      IB_MREQ_M  => IB_MREQ_M,

      IB_SRES_M  => IB_SRES_M,

      DM_STAT_DP => DM_STAT_DP,

      DM_STAT_VM => DM_STAT_VM,

      DM_STAT_CO => DM_STAT_CO

    );

  MEM : pdp11_bram

    generic map (

      AWIDTH => sys_conf_bram_awidth)

    port map (

      CLK     => CLK,

      GRESET  => RESET,

      EM_MREQ => EM_MREQ,

      EM_SRES => EM_SRES

    );

  IBDR_SYS : ibdr_minisys

    port map (

      CLK      => CLK,

      CE_USEC  => CE_USEC,

      CE_MSEC  => CE_USEC,              -- !! in test benches msec = usec !!

      RESET    => RESET,

      BRESET   => BRESET,

      RB_LAM   => open,

      IB_MREQ  => IB_MREQ_M,

      IB_SRES  => IB_SRES_M,

      EI_ACKM  => EI_ACKM,

      EI_PRI   => EI_PRI,

      EI_VECT  => EI_VECT,

      DISPREG  => open

    );

-- synthesis translate_off

  DM_STAT_SY.emmreq <= EM_MREQ;

  DM_STAT_SY.emsres <= EM_SRES;

  DM_STAT_SY.chit   <= '0';

  TMU : pdp11_tmu_sb

    generic map (

      ENAPIN => 13)

     port map (

      CLK        => CLK,

      DM_STAT_DP => DM_STAT_DP,

      DM_STAT_VM => DM_STAT_VM,

      DM_STAT_CO => DM_STAT_CO,

      DM_STAT_SY => DM_STAT_SY

    );

-- synthesis translate_on

end syn;