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--!

--! PDP-8 Processor

--!

--! \brief

--!      PDP8 Device Type Definitions

--!

--! \details

--!      This package contains information that is required for any

--!      device.  All devices should use this package.

--!

--! \file

--!      dev_types.vhd

--!

--! \author

--!      Rob Doyle - doyle (at) cox (dot) net

--!

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--

--  Copyright (C) 2009, 2010, 2011 Rob Doyle

--

-- This source file may be used and distributed without

-- restriction provided that this copyright statement is not

-- removed from the file and that any derivative work contains

-- the original copyright notice and the associated disclaimer.

--

-- This source file is free software; you can redistribute it

-- and/or modify it under the terms of the GNU Lesser General

-- Public License as published by the Free Software Foundation;

-- version 2.1 of the License.

--

-- This source 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 Lesser General Public License for more

-- details.

--

-- You should have received a copy of the GNU Lesser General

-- Public License along with this source; if not, download it

-- from http://www.gnu.org/licenses/lgpl.txt

--

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--

-- Comments are formatted for doxygen

--

library ieee;

use ieee.std_logic_1164.all;

--

--! PDP8 Device Type Definitions Package

--

package dev_types is

    --

    --! Types

    --

    subtype  devADDR_t  is std_logic_vector( 0 to 11);          --! Device addresses

    subtype  devNUM_t   is std_logic_vector( 0 to  5);          --! IOT Device Number

    subtype  devOP_t    is std_logic_vector( 0 to  2);          --! IOT OP Code

end dev_types;