cpu2pca.cpp

Kluwer.Academic.Pub.Systemc.From.The.Ground.Up-此全书的范例程式。

//BEGIN: cpu2pca.h (systemc)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//See hier_chan.h for more information
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#include <systemc.h>
#include "cpu2pca.h"

  enum operation {WRITE=false, READ=true};

  void cpu2pca::write(unsigned long addr, long data) {
    //cout << "INFO: " << name() << "::write starting @ " << sc_time_stamp() << endl;
    wait(ck->posedge_event());
    ld->write(true);
    rw->write(WRITE);
    a->write(addr);
    d->write(data);
    wait(ck->posedge_event());
    ld->write(false);
  }

  long cpu2pca::read(unsigned long addr) {
    //cout << "INFO: " << name() << "::read starting @ " << sc_time_stamp() << endl;
    wait(ck->posedge_event());
    ld->write(true);
    rw->write(READ);
    a->write(addr);
    d->write(FLOAT);
    wait(ck->posedge_event());
    ld->write(false);
    return d->read().to_long();
  }

  void cpu2pca::burst_write(unsigned long addr, unsigned size, long* data) {
    for (unsigned i=0; i!=size; i++) {
      wait(ck->posedge_event());
      ld->write(true);
      rw->write(WRITE);
      a->write(addr++);
      d->write(data[i]);
    }//endfor i
    wait(ck->posedge_event());
    ld->write(false);
  }

  void cpu2pca::burst_read(unsigned long addr, unsigned size, long* data) {
    wait(ck->posedge_event());
    ld->write(true);
    rw->write(READ);
    a->write(addr++);
    d->write(FLOAT);
    for (unsigned i=0; i!=size; i++) {
      wait(ck->posedge_event());
      ld->write(i!=(size-1));
      a->write(addr++);
      data[i] = d->read().to_long();
    }//endfor i
    wait(ck->posedge_event());
  }

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//END $Id: cpu2pca.cpp,v 1.1 2004/02/29 04:39:35 dcblack Exp $