/*
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/*
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Asynchronous SDM NoC
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Asynchronous SDM NoC
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(C)2011 Wei Song
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(C)2011 Wei Song
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Advanced Processor Technologies Group
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Advanced Processor Technologies Group
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Computer Science, the Univ. of Manchester, UK
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Computer Science, the Univ. of Manchester, UK
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Authors:
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Authors:
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Wei Song wsong83@gmail.com
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Wei Song wsong83@gmail.com
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License: LGPL 3.0 or later
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License: LGPL 3.0 or later
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A SystemC network adapter/interface for NoC simulation.
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A SystemC network adapter/interface for NoC simulation.
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History:
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History:
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23/12/2008 Initial version. <wsong83@gmail.com>
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23/12/2008 Initial version. <wsong83@gmail.com>
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30/09/2010 Use template style packet definition. <wsong83@gmail.com>
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30/09/2010 Use template style packet definition. <wsong83@gmail.com>
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16/10/2010 Support SDM. <wsong83@gmail.com>
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16/10/2010 Support SDM. <wsong83@gmail.com>
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05/06/2011 Clean up for opensource. <wsong83@gmail.com>
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05/06/2011 Clean up for opensource. <wsong83@gmail.com>
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*/
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*/
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#include "ni.h"
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#include "ni.h"
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Network_Adapter::Network_Adapter(
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Network_Adapter::Network_Adapter(
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sc_module_name name // module name
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sc_module_name name // module name
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,unsigned int x // location x
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,unsigned int x // location x
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,unsigned int y // location y
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,unsigned int y // location y
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):
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):
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sc_module(name),
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sc_module(name),
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frame_in("FrmIn"),
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frame_in("FrmIn"),
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frame_out("FrmOut"),
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frame_out("FrmOut"),
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IP("IP"),
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IP("IP"),
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OP("OP"),
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OP("OP"),
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loc_x(x),
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loc_x(x),
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loc_y(y),
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loc_y(y),
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oflit(1)
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oflit(1)
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{
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{
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sc_spawn_options opt;
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sc_spawn_options opt;
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for(unsigned int i=0; i<SubChN; i++) {
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for(unsigned int i=0; i<SubChN; i++) {
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token[i] = BufDepth/2;
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token[i] = BufDepth/2;
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}
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}
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for(unsigned int i=0; i<SubChN; i++) {
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for(unsigned int i=0; i<SubChN; i++) {
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sc_spawn(sc_bind(&Network_Adapter::ibuffer_thread, this, i), NULL, &opt);
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sc_spawn(sc_bind(&Network_Adapter::ibuffer_thread, this, i), NULL, &opt);
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sc_spawn(sc_bind(&Network_Adapter::obuffer_thread, this, i), NULL, &opt);
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sc_spawn(sc_bind(&Network_Adapter::obuffer_thread, this, i), NULL, &opt);
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sc_spawn(sc_bind(&Network_Adapter::credit_update, this, i), NULL, &opt);
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sc_spawn(sc_bind(&Network_Adapter::credit_update, this, i), NULL, &opt);
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}
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}
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SC_THREAD(oport);
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SC_THREAD(oport);
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SC_THREAD(iport);
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SC_THREAD(iport);
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}
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}
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Network_Adapter::~Network_Adapter()
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Network_Adapter::~Network_Adapter()
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{
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{
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}
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}
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// read in the incoming frame
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// read in the incoming frame
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void Network_Adapter::ibuffer_thread(unsigned int ii){
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void Network_Adapter::ibuffer_thread(unsigned int ii){
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FRAME mframe;
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FRAME mframe;
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FLIT mflit;
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FLIT mflit;
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while(1){
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while(1){
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mframe.clear();
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mframe.clear();
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while(1) {
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while(1) {
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mflit = iflit[ii].read();
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mflit = iflit[ii].read();
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mframe << mflit;
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mframe << mflit;
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if(mflit.ftype == F_TL) break;
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if(mflit.ftype == F_TL) break;
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}
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}
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frame_out->write(mframe);
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frame_out->write(mframe);
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}
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}
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}
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}
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// send out a frame
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// send out a frame
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void Network_Adapter::obuffer_thread(unsigned int ii){
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void Network_Adapter::obuffer_thread(unsigned int ii){
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FRAME mframe;
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FRAME mframe;
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FLIT mflit;
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FLIT mflit;
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while(1){
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while(1){
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mframe = frame_in->read();
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mframe = frame_in->read();
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while(1) {
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while(1) {
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mframe >> mflit;
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mframe >> mflit;
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mflit.vcn = ii;
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mflit.vcn = ii;
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//fetch a token
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//fetch a token
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if(token[ii] == 0)
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if(token[ii] == 0)
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wait(token_arrive[ii]);
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wait(token_arrive[ii]);
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token[ii]--;
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token[ii]--;
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oflit.write(mflit);
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oflit.write(mflit);
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if(mflit.ftype == F_TL) break;
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if(mflit.ftype == F_TL) break;
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}
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}
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}
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}
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}
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}
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void Network_Adapter::oport() {
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void Network_Adapter::oport() {
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FLIT mflit;
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FLIT mflit;
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while(1) {
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while(1) {
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mflit = oflit.read();
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mflit = oflit.read();
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OP->write(mflit);
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OP->write(mflit);
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}
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}
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}
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}
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void Network_Adapter::iport() {
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void Network_Adapter::iport() {
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FLIT mflit;
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FLIT mflit;
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while(1) {
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while(1) {
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mflit = IP->read();
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mflit = IP->read();
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iflit[mflit.vcn].write(mflit);
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iflit[mflit.vcn].write(mflit);
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}
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}
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}
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}
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void Network_Adapter::credit_update(unsigned int ii) {
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void Network_Adapter::credit_update(unsigned int ii) {
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CPa[ii].write(false);
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CPa[ii].write(false);
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while(1) {
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while(1) {
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if(!CP[ii].read())
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if(!CP[ii].read())
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wait(CP[ii].posedge_event());
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wait(CP[ii].posedge_event());
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token[ii]++;
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token[ii]++;
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token_arrive[ii].notify();
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token_arrive[ii].notify();
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CPa[ii].write(true);
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CPa[ii].write(true);
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wait(CP[ii].negedge_event());
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wait(CP[ii].negedge_event());
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CPa[ii].write(false);
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CPa[ii].write(false);
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}
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}
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}
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}
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bool Network_Adapter::check_frame(const FRAME& frame)
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bool Network_Adapter::check_frame(const FRAME& frame)
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{
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{
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// TODO: check the integerity, dummy right noe
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// TODO: check the integerity, dummy right noe
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return true;
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return true;
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}
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}
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