112855Sgabeblack@google.com/***************************************************************************** 212855Sgabeblack@google.com 312855Sgabeblack@google.com Licensed to Accellera Systems Initiative Inc. (Accellera) under one or 412855Sgabeblack@google.com more contributor license agreements. See the NOTICE file distributed 512855Sgabeblack@google.com with this work for additional information regarding copyright ownership. 612855Sgabeblack@google.com Accellera licenses this file to you under the Apache License, Version 2.0 712855Sgabeblack@google.com (the "License"); you may not use this file except in compliance with the 812855Sgabeblack@google.com License. You may obtain a copy of the License at 912855Sgabeblack@google.com 1012855Sgabeblack@google.com http://www.apache.org/licenses/LICENSE-2.0 1112855Sgabeblack@google.com 1212855Sgabeblack@google.com Unless required by applicable law or agreed to in writing, software 1312855Sgabeblack@google.com distributed under the License is distributed on an "AS IS" BASIS, 1412855Sgabeblack@google.com WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 1512855Sgabeblack@google.com implied. See the License for the specific language governing 1612855Sgabeblack@google.com permissions and limitations under the License. 1712855Sgabeblack@google.com 1812855Sgabeblack@google.com *****************************************************************************/ 1912855Sgabeblack@google.com 2012855Sgabeblack@google.com/***************************************************************************** 2112855Sgabeblack@google.com 2212855Sgabeblack@google.com multtrans0.cpp -- 2312855Sgabeblack@google.com 2412855Sgabeblack@google.com Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15 2512855Sgabeblack@google.com 2612855Sgabeblack@google.com *****************************************************************************/ 2712855Sgabeblack@google.com 2812855Sgabeblack@google.com/***************************************************************************** 2912855Sgabeblack@google.com 3012855Sgabeblack@google.com MODIFICATION LOG - modifiers, enter your name, affiliation, date and 3112855Sgabeblack@google.com changes you are making here. 3212855Sgabeblack@google.com 3312855Sgabeblack@google.com Name, Affiliation, Date: 3412855Sgabeblack@google.com Description of Modification: 3512855Sgabeblack@google.com 3612855Sgabeblack@google.com *****************************************************************************/ 3712855Sgabeblack@google.com 3812855Sgabeblack@google.com#include "systemc.h" 3912855Sgabeblack@google.com 4012855Sgabeblack@google.comSC_MODULE( delay1 ) 4112855Sgabeblack@google.com{ 4212855Sgabeblack@google.com SC_HAS_PROCESS( delay1 ); 4312855Sgabeblack@google.com 4412855Sgabeblack@google.com sc_in<int> data_i; 4512855Sgabeblack@google.com sc_out<int> data_o; 4612855Sgabeblack@google.com 4712855Sgabeblack@google.com // Constructor 4812855Sgabeblack@google.com delay1( sc_module_name NAME, 4912855Sgabeblack@google.com sc_signal<int>& DATA_I, 5012855Sgabeblack@google.com sc_signal<int>& DATA_O ) 5112855Sgabeblack@google.com { 5212855Sgabeblack@google.com data_i(DATA_I); 5312855Sgabeblack@google.com data_o(DATA_O); 5412855Sgabeblack@google.com SC_THREAD( entry ); 5512855Sgabeblack@google.com sensitive << data_i; 5612855Sgabeblack@google.com } 5712855Sgabeblack@google.com 5812855Sgabeblack@google.com // Functionality 5912855Sgabeblack@google.com void entry(); 6012855Sgabeblack@google.com}; 6112855Sgabeblack@google.com 6212855Sgabeblack@google.comvoid delay1::entry() 6312855Sgabeblack@google.com{ 6412855Sgabeblack@google.com wait(); 6512855Sgabeblack@google.com int buffer; 6612855Sgabeblack@google.com wait(); // until the first real event 6712855Sgabeblack@google.com buffer = data_i.read(); 6812855Sgabeblack@google.com wait(); // until you get the next sample to send data out 6912855Sgabeblack@google.com while (true) { 7012855Sgabeblack@google.com data_o.write(buffer); 7112855Sgabeblack@google.com buffer = data_i.read(); 7212855Sgabeblack@google.com wait(); 7312855Sgabeblack@google.com } 7412855Sgabeblack@google.com} 7512855Sgabeblack@google.com 7612855Sgabeblack@google.comSC_MODULE( state_machine ) 7712855Sgabeblack@google.com{ 7812855Sgabeblack@google.com SC_HAS_PROCESS( state_machine ); 7912855Sgabeblack@google.com 8012855Sgabeblack@google.com sc_in<int> data_i1; 8112855Sgabeblack@google.com sc_in<int> data_i2; 8212855Sgabeblack@google.com sc_out<int> data_o; 8312855Sgabeblack@google.com 8412855Sgabeblack@google.com int state; 8512855Sgabeblack@google.com 8612855Sgabeblack@google.com // Constructor 8712855Sgabeblack@google.com state_machine( sc_module_name NAME, 8812855Sgabeblack@google.com sc_signal<int>& DATA_I1, 8912855Sgabeblack@google.com sc_signal<int>& DATA_I2, 9012855Sgabeblack@google.com sc_signal<int>& DATA_O ) 9112855Sgabeblack@google.com { 9212855Sgabeblack@google.com data_i1(DATA_I1); data_i2(DATA_I2); data_o(DATA_O); 9312855Sgabeblack@google.com SC_METHOD( entry ); 9412855Sgabeblack@google.com sensitive << data_i1 << data_i2; 9512855Sgabeblack@google.com 9612855Sgabeblack@google.com state = 0; 9712855Sgabeblack@google.com } 9812855Sgabeblack@google.com 9912855Sgabeblack@google.com // Functionality 10012855Sgabeblack@google.com void entry(); 10112855Sgabeblack@google.com}; 10212855Sgabeblack@google.com 10312855Sgabeblack@google.comvoid state_machine::entry() 10412855Sgabeblack@google.com{ 10512855Sgabeblack@google.com switch(state) { 10612855Sgabeblack@google.com case 0: // initial state 10712855Sgabeblack@google.com cout << "In state 0 :: " << flush; 10812855Sgabeblack@google.com if (data_i1.event()) { 10912855Sgabeblack@google.com if (data_i2.event()) { 11012855Sgabeblack@google.com data_o.write(data_i1.read() + data_i2.read()); 11112855Sgabeblack@google.com cout << "staying in state 0" << endl; 11212855Sgabeblack@google.com } 11312855Sgabeblack@google.com else { 11412855Sgabeblack@google.com state = 1; 11512855Sgabeblack@google.com cout << "going to state 1" << endl; 11612855Sgabeblack@google.com // No output is written 11712855Sgabeblack@google.com } 11812855Sgabeblack@google.com } 11912855Sgabeblack@google.com else if (data_i2.event()) { 12012855Sgabeblack@google.com state = 2; 12112855Sgabeblack@google.com cout << "going to state 2" << endl; 12212855Sgabeblack@google.com // No output is written 12312855Sgabeblack@google.com } 12412855Sgabeblack@google.com break; 12512855Sgabeblack@google.com case 1: // Event on First input seen only 12612855Sgabeblack@google.com cout << "In state 1 :: " << flush; 12712855Sgabeblack@google.com if (data_i2.event()) { 12812855Sgabeblack@google.com if (data_i1.event()) { 12912855Sgabeblack@google.com state = 0; 13012855Sgabeblack@google.com cout << "going to state 0" << endl; 13112855Sgabeblack@google.com data_o.write(data_i1.read() + data_i2.read()); 13212855Sgabeblack@google.com } 13312855Sgabeblack@google.com else { 13412855Sgabeblack@google.com cout << "going to state 2" << endl; 13512855Sgabeblack@google.com state = 2; 13612855Sgabeblack@google.com // No output written 13712855Sgabeblack@google.com } 13812855Sgabeblack@google.com } 13912855Sgabeblack@google.com else { 14012855Sgabeblack@google.com cout << "staying in state 1" << endl; 14112855Sgabeblack@google.com } 14212855Sgabeblack@google.com break; 14312855Sgabeblack@google.com case 2: 14412855Sgabeblack@google.com cout << "In state 2 :: " << flush; 14512855Sgabeblack@google.com if (data_i1.event()) { 14612855Sgabeblack@google.com if (data_i2.event()) { 14712855Sgabeblack@google.com state = 0; 14812855Sgabeblack@google.com cout << "going to state 0" << endl; 14912855Sgabeblack@google.com data_o.write(data_i1.read() + data_i2.read()); 15012855Sgabeblack@google.com } 15112855Sgabeblack@google.com else { 15212855Sgabeblack@google.com cout << "going to state 1" << endl; 15312855Sgabeblack@google.com state = 1; 15412855Sgabeblack@google.com // No output written 15512855Sgabeblack@google.com } 15612855Sgabeblack@google.com } 15712855Sgabeblack@google.com else { 15812855Sgabeblack@google.com cout << "staying in state 2" << endl; 15912855Sgabeblack@google.com } 16012855Sgabeblack@google.com break; 16112855Sgabeblack@google.com default: 16212855Sgabeblack@google.com cout << "In bad state - resetting" << endl; 16312855Sgabeblack@google.com state = 0; 16412855Sgabeblack@google.com break; 16512855Sgabeblack@google.com } 16612855Sgabeblack@google.com} 16712855Sgabeblack@google.com 16812855Sgabeblack@google.comvoid testbench(sc_signal<int>& data, const sc_signal<int>& res) 16912855Sgabeblack@google.com{ 17012855Sgabeblack@google.com int i; 17112855Sgabeblack@google.com sc_start(0, SC_NS); 17212855Sgabeblack@google.com for (i=0; i<10; i++) { 17312855Sgabeblack@google.com data.write(i*10 + 123); 17412855Sgabeblack@google.com sc_start( 10, SC_NS ); 17512855Sgabeblack@google.com cout << "Result = " << res.read() << endl; 17612855Sgabeblack@google.com data.write(i * 11 - 34); 17712855Sgabeblack@google.com sc_start( 10, SC_NS ); 17812855Sgabeblack@google.com cout << "Result = " << res.read() << endl; 17912855Sgabeblack@google.com } 18012855Sgabeblack@google.com} 18112855Sgabeblack@google.com 18212855Sgabeblack@google.comint 18312855Sgabeblack@google.comsc_main(int ac, char *av[]) 18412855Sgabeblack@google.com{ 18512855Sgabeblack@google.com sc_signal<int> data_gen("Data"); 18612855Sgabeblack@google.com sc_signal<int> data_delayed("DelayedData"); 18712855Sgabeblack@google.com sc_signal<int> result("Result"); 18812855Sgabeblack@google.com 18912855Sgabeblack@google.com data_gen = 0; 19012855Sgabeblack@google.com data_delayed = 0; 19112855Sgabeblack@google.com result = 0; 19212855Sgabeblack@google.com 19312855Sgabeblack@google.com delay1 D1("DL", data_gen, data_delayed); 19412855Sgabeblack@google.com state_machine SM("SM", data_gen, data_delayed, result); 19512855Sgabeblack@google.com 19612855Sgabeblack@google.com testbench(data_gen, result); 19712855Sgabeblack@google.com return 0; 19812855Sgabeblack@google.com} 199