Subversion Repositories w11

-- $Id: sys_conf.vhd 692 2015-06-21 11:53:24Z mueller $
--
-- Copyright 2010-2015 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.
--
------------------------------------------------------------------------------
-- Package Name:   sys_conf
-- Description:    Definitions for sys_w11a_n2 (for synthesis)
--
-- Dependencies:   -
-- Tool versions:  xst 11.4-14.7; ghdl 0.26-0.31
-- Revision History: 
-- Date         Rev Version  Comment
-- 2015-06-21   692   1.4.1  use clksys=52 (no closure after rhrp fixes)
-- 2015-03-14   658   1.4    add sys_conf_ibd_* definitions
-- 2015-02-15   647   1.3    drop bram and minisys options
-- 2015-01-04   630   1.2.2  use clksys=54 (no closure after rlink r4 + RL11)
-- 2014-12-22   619   1.2.1  add _rbmon_awidth
-- 2013-04-21   509   1.2    add fx2 settings
-- 2011-11-19   428   1.1.1  use clksys=56 (58 no closure after numeric_std...)
-- 2010-11-27   341   1.1    add dcm and memctl related constants (clksys=58)
-- 2010-05-05   295   1.0    Initial version (derived from _s3 version)
------------------------------------------------------------------------------
 
library ieee;
use ieee.std_logic_1164.all;
 
use work.slvtypes.all;
 
-- valid system clock / delay combinations:
--  div mul  clksys  read0 read1 write
--    1   1   50.0     2     2     3
--   25  27   54.0     3     3     3
--   25  29   58.0     3     3     4
 
package sys_conf is
 
  -- configure clocks --------------------------------------------------------
  constant sys_conf_clkfx_divide : positive   :=  25;
  constant sys_conf_clkfx_multiply : positive :=  26;   -- ==> 52 MHz
 
  -- configure rlink and hio interfaces --------------------------------------
  constant sys_conf_ser2rri_defbaud : integer := 115200;   -- default 115k baud
  constant sys_conf_hio_debounce : boolean := true;    -- instantiate debouncers
 
  -- fx2 settings: petowidth=10 -> 2^10 30 MHz clocks -> ~33 usec
  constant sys_conf_fx2_petowidth  : positive := 10;
  constant sys_conf_fx2_ccwidth  : positive := 5;
 
  -- configure debug and monitoring units ------------------------------------
  constant sys_conf_rbmon_awidth : integer := 9; -- use 0 to disable rbmon
  constant sys_conf_ibmon_awidth : integer := 9; -- use 0 to disable ibmon
 
  -- configure memory controller ---------------------------------------------
  constant sys_conf_memctl_read0delay : positive := 3;
  constant sys_conf_memctl_read1delay : positive := sys_conf_memctl_read0delay;
  constant sys_conf_memctl_writedelay : positive := 4;
 
  -- configure w11 cpu core --------------------------------------------------
  constant sys_conf_mem_losize     : integer := 8#167777#; --   4 MByte
 
  constant sys_conf_cache_fmiss    : slbit   := '0';     -- cache enabled
 
  -- configure w11 system devices --------------------------------------------
  -- configure character and communication devices
  constant sys_conf_ibd_dl11_1 : boolean := true;  -- 2nd DL11
  constant sys_conf_ibd_pc11   : boolean := true;  -- PC11
  constant sys_conf_ibd_lp11   : boolean := true;  -- LP11
 
  -- configure mass storage devices
  constant sys_conf_ibd_rk11   : boolean := true;  -- RK11
  constant sys_conf_ibd_rl11   : boolean := true;  -- RL11
  constant sys_conf_ibd_rhrp   : boolean := true;  -- RHRP
  constant sys_conf_ibd_tm11   : boolean := true;  -- TM11
 
  -- configure other devices
  constant sys_conf_ibd_iist   : boolean := true;  -- IIST
 
  -- derived constants =======================================================
  constant sys_conf_clksys : integer :=
    (50000000/sys_conf_clkfx_divide)*sys_conf_clkfx_multiply;
  constant sys_conf_clksys_mhz : integer := sys_conf_clksys/1000000;
 
  constant sys_conf_ser2rri_cdinit : integer :=
    (sys_conf_clksys/sys_conf_ser2rri_defbaud)-1;
 
end package sys_conf;