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#include "systemc.h"
typedef sc_biguint<121> atom; // Value to be pipe delayed.
//==============================================================================
// esc_dpipe<T,N> - DELAY PIPELINE FOR AN ARBITRARY CLASS:
//==============================================================================
template<class T, int N>
SC_MODULE(esc_dpipe) {
public:
typedef sc_export<sc_signal_inout_if<T> > in; // To pipe port type.
typedef sc_export<sc_signal_in_if<T> > out; // From pipe port type.
public:
SC_CTOR(esc_dpipe)
{
m_in(m_pipe[0]);
m_out(m_pipe[N-1]);
SC_METHOD(rachet);
sensitive << m_clk.pos();
}
protected:
void rachet()
{
for ( int i = N-1; i > 0; i-- )
{
m_pipe[i].write(m_pipe[i-1].read());
}
}
public:
sc_in_clk m_clk; // Pipe synchronization.
in m_in; // Input to delay pipe.
out m_out; // Output from delay pipe.
protected:
sc_signal<T> m_pipe[N]; // Pipeline stages.
};
// Testbench reader of values from the pipe:
SC_MODULE(Reader)
{
SC_CTOR(Reader)
{
SC_METHOD(extract)
sensitive << m_clk.pos();
dont_initialize();
}
void extract()
{
cout << sc_time_stamp() << ": " << m_from_pipe.read() << endl;
}
sc_in_clk m_clk; // Module synchronization.
sc_in<atom > m_from_pipe; // Output from delay pipe.
};
// Testbench writer of values to the pipe:
SC_MODULE(Writer)
{
SC_CTOR(Writer)
{
SC_METHOD(insert)
sensitive << m_clk.pos();
m_counter = 0;
}
void insert()
{
m_to_pipe.write(m_counter);
m_counter++;
}
sc_in_clk m_clk; // Module synchronization.
atom m_counter; // Write value.
sc_inout<atom > m_to_pipe; // Input for delay pipe.
};
// Main program
int sc_main(int argc, char* argv[])
{
sc_clock clock;
esc_dpipe<atom,4> delay("pipe");
Reader reader("reader");
Writer writer("writer");
delay.m_clk(clock);
reader.m_clk(clock);
reader.m_from_pipe(delay.m_out);
writer.m_clk(clock);
writer.m_to_pipe(delay.m_in);
sc_start(50, SC_NS);
return 0;
}
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