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Diffstat (limited to 'zpu/hdl/example/zpu_config.vhd')
| -rw-r--r-- | zpu/hdl/example/zpu_config.vhd | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/zpu/hdl/example/zpu_config.vhd b/zpu/hdl/example/zpu_config.vhd new file mode 100644 index 0000000..cd4163d --- /dev/null +++ b/zpu/hdl/example/zpu_config.vhd @@ -0,0 +1,55 @@ +-- 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.numeric_std.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) := + std_logic_vector(to_unsigned((2**(maxAddrBitBRAM+1))-8, maxAddrBitIncIO+1)); +end zpu_config; |
