| /***************************************************************************** |
| |
| 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. |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| async_clock.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: |
| |
| *****************************************************************************/ |
| |
| #include "systemc.h" |
| |
| SC_MODULE( proc1 ) |
| { |
| SC_HAS_PROCESS( proc1 ); |
| |
| sc_in_clk clk; |
| |
| proc1( sc_module_name NAME, |
| sc_signal_in_if<bool>& CLK ) |
| { |
| clk( CLK ); |
| SC_CTHREAD( entry, clk.pos() ); |
| } |
| |
| void entry() |
| { |
| while (true) { |
| wait(); |
| cout << "Process 1 triggered" << endl; |
| } |
| } |
| }; |
| |
| SC_MODULE( proc2 ) |
| { |
| SC_HAS_PROCESS( proc2 ); |
| |
| sc_in_clk clk; |
| |
| proc2( sc_module_name NAME, |
| sc_signal_in_if<bool>& CLK ) |
| { |
| clk( CLK ); |
| SC_CTHREAD( entry, clk.pos() ); |
| } |
| |
| void entry() |
| { |
| while (true) { |
| wait(); |
| cout << "Process 2 triggered" << endl; |
| } |
| } |
| }; |
| |
| SC_MODULE( proc3 ) |
| { |
| SC_HAS_PROCESS( proc3 ); |
| |
| sc_in_clk clk; |
| |
| proc3( sc_module_name NAME, |
| sc_signal_in_if<bool>& CLK ) |
| { |
| clk( CLK ); |
| SC_CTHREAD( entry, clk.pos() ); |
| } |
| |
| void entry() |
| { |
| while (true) { |
| wait(); |
| cout << "Process 3 triggered" << endl; |
| } |
| } |
| }; |
| |
| |
| SC_MODULE( proc4 ) |
| { |
| SC_HAS_PROCESS( proc4 ); |
| |
| sc_in<bool> a; |
| sc_in<bool> b; |
| sc_in_clk clk; |
| sc_out_clk c; |
| sc_out_clk d; |
| |
| proc4( sc_module_name NAME, |
| sc_signal<bool>& A, |
| sc_signal<bool>& B, |
| sc_signal_in_if<bool>& CLK, |
| sc_signal_out_if<bool>& C, |
| sc_signal_out_if<bool>& D ) |
| { |
| a(A); |
| b(B); |
| clk(CLK); |
| c(C); |
| d(D); |
| SC_METHOD( entry ); |
| sensitive << a << b << clk; |
| } |
| |
| void entry() |
| { |
| if ((bool) a == 1) |
| c = clk; |
| else |
| c = 0; |
| |
| d = clk & b; |
| } |
| }; |
| |
| #define NS * 1e-9 |
| |
| int |
| sc_main( int argc, char* argv[] ) |
| { |
| sc_signal<bool> clk1("clk1"); |
| sc_signal<bool> dclk1("Dclock1"); // First derived clock |
| sc_signal<bool> dclk2("Dclock2"); // Second derived clock |
| |
| sc_signal<bool> p("p"), q("q"); |
| |
| proc1 p1("p1", clk1); |
| proc2 p2("p2", dclk1); |
| proc3 p3("p3", dclk2); |
| proc4 p4("p4", p, q, clk1, dclk1, dclk2 ); |
| |
| sc_start(0, SC_NS); |
| p = 1; |
| q = 1; |
| for (double t = 0; t < 5 NS; t += 1 NS) { |
| clk1 = 1; |
| sc_start( 1, SC_NS ); |
| clk1 = 0; |
| sc_start( 1, SC_NS ); |
| cout << " ***" << endl; |
| } |
| q = 0; |
| for (double t = 0; t < 5 NS; t += 1 NS) { |
| clk1 = 1; |
| sc_start( 1, SC_NS ); |
| clk1 = 0; |
| sc_start( 1, SC_NS ); |
| cout << " ***" << endl; |
| } |
| p = 0; |
| for (double t = 0; t < 5 NS; t += 1 NS) { |
| clk1 = 1; |
| sc_start( 1, SC_NS ); |
| clk1 = 0; |
| sc_start( 1, SC_NS ); |
| cout << " ***" << endl; |
| } |
| |
| return 0; |
| } |