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+/*****************************************************************************
+
+ Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
+ more contributor license agreements. See the NOTICE file distributed
+ with this work for additional information regarding copyright ownership.
+ Accellera licenses this file to you under the Apache License, Version 2.0
+ (the "License"); you may not use this file except in compliance with the
+ License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+ fsmr.cpp --
+
+ Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+ MODIFICATION LOG - modifiers, enter your name, affiliation, date and
+ changes you are making here.
+
+ Name, Affiliation, Date:
+ Description of Modification:
+
+ *****************************************************************************/
+
+/* File containing functionality of the FSM recognizer */
+
+#include "fsmr.h"
+
+void fsm_recognizer::entry()
+{
+ char c;
+ int state = 0;
+ bool out;
+
+ while (true) {
+ do { wait(); } while (data_ready != true);
+ c = input_char.read();
+ cout << c << flush;
+
+ switch(state) {
+ case 0:
+ if (c == pattern[0]) state = 1;
+ else state = 0;
+ out = false;
+ break;
+ case 1:
+ if (c == pattern[1]) state = 2;
+ else state = 0;
+ out = false;
+ break;
+ case 2:
+ if (c == pattern[2]) state = 3;
+ else state = 0;
+ out = false;
+ break;
+ case 3:
+ if (c == pattern[3]) out = true;
+ else out = false;
+ state = 0;
+ break;
+ default:
+ cout << "Error: FSM in bad state." << endl;
+ break;
+ }
+
+ found.write(out);
+ wait(); // for writing the found signal
+ found.write(false); // reset the found signal
+ }
+}