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[/] [open8_urisc/] [trunk/] [VHDL/] [Open8_pkg.vhd] - Rev 144
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-- Copyright (c)2006, Jeremy Seth Henry -- All rights reserved. -- -- Redistribution and use in source and binary forms, with or without -- modification, are permitted provided that the following conditions are met: -- * Redistributions of source code must retain the above copyright -- notice, this list of conditions and the following disclaimer. -- * 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, -- where applicable (as part of a user interface, debugging port, etc.) -- -- THIS SOFTWARE IS PROVIDED BY JEREMY SETH HENRY ``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 JEREMY SETH HENRY 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. -- VHDL Units : Open8_pkg -- Description: Contains constant definitions for the Open8 processor -- Revision History -- Author Date Change ------------------ -------- --------------------------------------------------- -- Seth Henry 07/22/06 Design Start library ieee; use ieee.std_logic_1164.all; package Open8_pkg is -- These subtypes can be used with external peripherals to simplify -- connection to the core. subtype ADDRESS_TYPE is std_logic_vector(15 downto 0); subtype DATA_TYPE is std_logic_vector(7 downto 0); -- Note: INTERRUPT_BUNDLE must be exactly the same width as DATA_TYPE subtype INTERRUPT_BUNDLE is DATA_TYPE; -- Component declaration component Open8_CPU is generic( Stack_Start_Addr : ADDRESS_TYPE; Allow_Stack_Address_Move : std_logic := '0'; ISR_Start_Addr : ADDRESS_TYPE; Program_Start_Addr : ADDRESS_TYPE; Default_Interrupt_Mask : DATA_TYPE; Enable_CPU_Halt : std_logic := '0'; Enable_Auto_Increment : std_logic := '0' ); port( Clock : in std_logic; Reset_n : in std_logic; CPU_Halt : in std_logic; Interrupts : in INTERRUPT_BUNDLE; Address : out ADDRESS_TYPE; Rd_Data : in DATA_TYPE; Rd_Enable : out std_logic; Wr_Data : out DATA_TYPE; Wr_Enable : out std_logic ); end component; end Open8_pkg; package body Open8_pkg is end package body;
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