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-- $Id: sys_conf_sim.vhd 538 2013-10-06 17:21:25Z mueller $
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--
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-- Copyright 2011-2013 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
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--
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-- This program is free software; you may redistribute and/or modify it under
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-- the terms of the GNU General Public License as published by the Free
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-- Software Foundation, either version 2, or at your option any later version.
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--
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-- This program is distributed in the hope that it will be useful, but
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-- WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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-- for complete details.
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--
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------------------------------------------------------------------------------
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-- Package Name: sys_conf
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-- Description: Definitions for sys_w11a_n3 (for simulation)
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--
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-- Dependencies: -
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-- Tool versions: xst 13.1, 14.6; ghdl 0.29
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-- Revision History:
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-- Date Rev Version Comment
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-- 2013-10-06 538 1.3 pll support, use clksys_vcodivide ect
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-- 2013-04-21 509 1.2 add fx2 settings
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-- 2011-11-25 432 1.0 Initial version (cloned from _n3)
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------------------------------------------------------------------------------
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library ieee;
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use ieee.std_logic_1164.all;
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use work.slvtypes.all;
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package sys_conf is
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constant sys_conf_clksys_vcodivide : positive := 25;
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constant sys_conf_clksys_vcomultiply : positive := 18; -- dcm 72 MHz
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constant sys_conf_clksys_outdivide : positive := 1; -- sys 72 MHz
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constant sys_conf_clksys_gentype : string := "DCM";
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constant sys_conf_memctl_read0delay : positive := 4; -- for <75 MHz
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constant sys_conf_memctl_read1delay : positive := sys_conf_memctl_read0delay;
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constant sys_conf_memctl_writedelay : positive := 5;
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constant sys_conf_ser2rri_cdinit : integer := 1-1; -- 1 cycle/bit in sim
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-- fx2 settings: petowidth=10 -> 2^10 30 MHz clocks -> ~33 usec
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constant sys_conf_fx2_petowidth : positive := 10;
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constant sys_conf_fx2_ccwidth : positive := 5;
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constant sys_conf_hio_debounce : boolean := false; -- no debouncers
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constant sys_conf_bram : integer := 0; -- no bram, use cache
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constant sys_conf_bram_awidth : integer := 14; -- bram size (16 kB)
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constant sys_conf_mem_losize : integer := 8#167777#; -- 4 MByte
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--constant sys_conf_mem_losize : integer := 8#003777#; -- 128 kByte (debug)
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-- constant sys_conf_bram : integer := 1; -- bram only
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-- constant sys_conf_bram_awidth : integer := 16; -- bram size (64 kB)
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-- constant sys_conf_mem_losize : integer := 8#001777#; -- 64 kByte
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constant sys_conf_cache_fmiss : slbit := '0'; -- cache enabled
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-- derived constants
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constant sys_conf_clksys : integer :=
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((100000000/sys_conf_clksys_vcodivide)*sys_conf_clksys_vcomultiply) /
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sys_conf_clksys_outdivide;
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constant sys_conf_clksys_mhz : integer := sys_conf_clksys/1000000;
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end package sys_conf;
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-- Note: mem_losize holds 16 MSB of the PA of the addressable memory
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-- 2 211 111 111 110 000 000 000
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-- 1 098 765 432 109 876 543 210
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--
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-- 0 000 000 011 111 111 000 000 -> 00037777 --> 14bit --> 16 kByte
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-- 0 000 000 111 111 111 000 000 -> 00077777 --> 15bit --> 32 kByte
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-- 0 000 001 111 111 111 000 000 -> 00177777 --> 16bit --> 64 kByte
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-- 0 000 011 111 111 111 000 000 -> 00377777 --> 17bit --> 128 kByte
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-- 0 011 111 111 111 111 000 000 -> 03777777 --> 20bit --> 1 MByte
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-- 1 110 111 111 111 111 000 000 -> 16777777 --> 22bit --> 4 MByte
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-- upper 256 kB excluded for 11/70 UB
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