Subversion Repositories zpu

-- ZPU

--

-- Copyright 2004-2008 oharboe - Øyvind Harboe - oyvind.harboe@zylin.com

-- 

-- The FreeBSD license

-- 

-- Redistribution and use in source and binary forms, with or without

-- modification, are permitted provided that the following conditions

-- are met:

-- 

-- 1. Redistributions of source code must retain the above copyright

--    notice, this list of conditions and the following disclaimer.

-- 2. Redistributions in binary 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.

-- 

-- THIS SOFTWARE IS PROVIDED BY THE ZPU PROJECT ``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

-- ZPU PROJECT 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.

-- 

-- The views and conclusions contained in the software and documentation

-- are those of the authors and should not be interpreted as representing

-- official policies, either expressed or implied, of the ZPU Project.

library ieee;

use ieee.std_logic_1164.all;

use ieee.std_logic_unsigned.all;

use ieee.std_logic_arith.all;

package zpu_config is

        -- generate trace output

        constant        Generate_Trace          : boolean := true;

        constant        wordPower                       : integer := 5;

        -- during simulation, set this to '0' to get matching trace.txt 

        constant        DontCareValue           : std_logic := '0';

        -- Clock frequency in MHz.

        constant        ZPU_Frequency           : std_logic_vector(7 downto 0) := x"64";

        -- This is the msb address bit. bytes=2^(maxAddrBitIncIO+1)

        constant        maxAddrBitIncIO         : integer := 27;

        constant        maxAddrBitBRAM          : integer := 16;

        -- start byte address of stack. 

        -- point to top of RAM - 2*words

        constant        spStart                         : std_logic_vector(maxAddrBitIncIO downto 0) :=

                                        conv_std_logic_vector((2**(maxAddrBitBRAM+1))-8, maxAddrBitIncIO+1);

end zpu_config;