add_chain.h revision 12855:588919e0e4aa
1/***************************************************************************** 2 3 Licensed to Accellera Systems Initiative Inc. (Accellera) under one or 4 more contributor license agreements. See the NOTICE file distributed 5 with this work for additional information regarding copyright ownership. 6 Accellera licenses this file to you under the Apache License, Version 2.0 7 (the "License"); you may not use this file except in compliance with the 8 License. You may obtain a copy of the License at 9 10 http://www.apache.org/licenses/LICENSE-2.0 11 12 Unless required by applicable law or agreed to in writing, software 13 distributed under the License is distributed on an "AS IS" BASIS, 14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 15 implied. See the License for the specific language governing 16 permissions and limitations under the License. 17 18 *****************************************************************************/ 19 20/***************************************************************************** 21 22 add_chain.h -- 23 24 Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15 25 26 *****************************************************************************/ 27 28/***************************************************************************** 29 30 MODIFICATION LOG - modifiers, enter your name, affiliation, date and 31 changes you are making here. 32 33 Name, Affiliation, Date: 34 Description of Modification: 35 36 *****************************************************************************/ 37 38#include "common.h" 39 40/******************************************************************************/ 41/*************************** add_chain Class Definition ********************/ 42/******************************************************************************/ 43 44SC_MODULE( ADD_CHAIN ) 45{ 46 SC_HAS_PROCESS( ADD_CHAIN ); 47 48 sc_in_clk clk; 49 50 const sc_signal<bool>& rst; 51 const signal_bool_vector8& a_in; 52 signal_bool_vector4& sum_out; 53 sc_signal<bool>& ready; 54 55 ADD_CHAIN( sc_module_name NAME, 56 sc_clock& TICK_P, 57 58 const sc_signal<bool>& RST, 59 const signal_bool_vector8& A_IN, 60 signal_bool_vector4& SUM_OUT, 61 sc_signal<bool>& READY 62 ) 63 : 64 rst (RST), 65 a_in (A_IN), 66 sum_out (SUM_OUT), 67 ready (READY) 68 { 69 clk(TICK_P); 70 SC_CTHREAD( entry, clk.pos() ); 71 reset_signal_is(rst, false); 72 } 73 void entry(); 74}; 75 76/******************************************************************************/ 77/*************************** add_chain Entry Function **********************/ 78/******************************************************************************/ 79/** **/ 80/** This function sums the number of 1's contained in a 8-bit data stream **/ 81/** **/ 82/******************************************************************************/ 83void 84ADD_CHAIN::entry() 85{ 86 bool_vector4 sum; 87 bool_vector8 a; 88 89 /***** Reset Initialization *****/ 90 sum_out.write(0); 91 ready.write(1); 92 wait(); 93 94 /***** MAIN LOOP *****/ 95 while(true) { 96 97 /***** Handshake *****/ 98 ready.write(0); 99 wait(); 100 101 /***** Computation *****/ 102 sum = 0; 103 a = a_in.read(); 104 105 for (int i=0; i<=7; i=i+1) { 106 sum = sum.to_uint() + a[i].to_bool(); 107 } 108 109 sum_out.write(sum); 110 111 /***** Handshake *****/ 112 ready.write(1); 113 wait(); 114 } 115} 116