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-------------------------------------------------------------------
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--!
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--! PDP-8 Processor
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--!
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--! \brief
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--! PR8E Paper Tape Reader Interface Type Definitions
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--!
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--! \details
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--! This package contains all the type information that is
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--! required to use the PR8E Paper Tape Reader Interface
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--! device.
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--!
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--! \file
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--! pr8e_types.vhd
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--!
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--! \author
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--! Rob Doyle - doyle (at) cox (dot) net
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--!
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--------------------------------------------------------------------
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--
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-- Copyright (C) 2009, 2010, 2011, 2012 Rob Doyle
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--
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-- This source file may be used and distributed without
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-- restriction provided that this copyright statement is not
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-- removed from the file and that any derivative work contains
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-- the original copyright notice and the associated disclaimer.
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--
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-- This source file is free software; you can redistribute it
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-- and/or modify it under the terms of the GNU Lesser General
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-- Public License as published by the Free Software Foundation;
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-- version 2.1 of the License.
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--
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-- This source is distributed in the hope that it will be
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-- useful, but WITHOUT ANY WARRANTY; without even the implied
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-- warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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-- PURPOSE. See the GNU Lesser General Public License for more
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-- details.
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--
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-- You should have received a copy of the GNU Lesser General
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-- Public License along with this source; if not, download it
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-- from http://www.gnu.org/licenses/lgpl.txt
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--
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--------------------------------------------------------------------
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--
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-- Comments are formatted for doxygen
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--
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library ieee; --! IEEE Library
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use ieee.std_logic_1164.all; --! IEEE 1164
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use work.dev_types.all; --! Device Types
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--
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--! Type definitions required for PR8E.
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--
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package pr8e_types is
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--
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-- Device Numbers
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--
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constant ptrdevNUM : devNUM_t := o"01"; --! 601x
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constant ptpdevNUM : devNUM_t := o"02"; --! 602x
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--
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-- Paper Tape Reader IOTs
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-- The RPE IOT is common to the reader and punch
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--
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constant opRPE : devOP_t := o"0"; --! 6xx0 : Set Interupt for Reader and Punch
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constant opRSF : devOP_t := o"1"; --! 6xx1 : Skip On Reader Flag
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constant opRRB : devOP_t := o"2"; --! 6xx2 : Read Reader Buffer and Clear Flag
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constant opRFC : devOP_t := o"4"; --! 6xx4 : Clear Flag and Buffer and Fetch Character
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constant opRCC : devOP_t := o"6"; --! 6xx6 : Read Reader Buffer, and Clear Flag, and Fetch Character
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--
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-- Paper Tape Punch IOTs
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-- The PCE IOT is common to the reader and punch
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--
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constant opPCE : devOP_t := o"0"; --! 6xx0 : Clear Interupt for Reader and Punch
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constant opPSF : devOP_t := o"1"; --! 6xx1 : Skip on Punch Flag
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constant opPCF : devOP_t := o"2"; --! 6xx2 : Clear Flag and Buffer
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constant opPPC : devOP_t := o"4"; --! 6xx4 : Load Buffer and Punch Character
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constant opPLS : devOP_t := o"6"; --! 6xx6 : Clear Flag and Buffer, Load Buffer and Punch Character
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end pr8e_types;
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