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Found 5 results

  1. Hello all, This is very basic question and I know its not possible, but still I need to put some delay or wait in start of simulation/end of elaboration. I will give you the background, In end of elaboration i an initializing the value to a pin, and that pin is quite required for reset vector address. In start of simulation I am opening my gdb, which which stop at my reset vector address, but it seems the gdb is not updating the reset vector value, so I need a small delay. Is it possible? Any suggestion will be very helpful :) Thanks and Regards, Nitin_s
  2. Hello, I'm writing a module in SystemC which basically works as follows: it receives a string of bytes through a port p_in and a control signal through the port h. The module must save the bytes within a matrix matrix just if the h signal is true. Within the SC_THREAD I'm using I implemented this: void MY_MODULE::my_method(){ if(!rst){ //put all the output ports to 0 } while(1){ //The module waits while the signal h is false while(!h) wait(); //The iterations to fill in the matrix begin //The iterations must work just if h = true for(i=0; i<100; i++){ for(j=0; j<100; j++){ matrix.nmmatrix[i*matrix.width+j] = p_in; wait(); while(!h) wait(); } } } } The problem I have is that the counters i and j start to increment one clock cycle after h passes from false to true. The behavior I'm trying to simulate is that the counters i and j start to increment in the same clock cycle when h passes from false to true and the counters must not increment while h is false. Could you please give a hint of what I am doing wrong?
  3. Hi, I have just learned SystemC for a few days. I wonder what's the main function of wait(SC_ZERO_TIME). It means process will wait until the end of this time or wait for a cycle. But, when should I use wait(SC_ZERO_TIME) and what's the sequence if there's two wait(SC_ZERO_TIME) in two thread? Thank you all.
  4. Good Day All, I am a complete noob in SystemC. I am however, working on a simulator which utilizes a few concepts from SystemC. Kernel is picking up on either the Sc_Method or the Sc_Thread. I am aware of the wait command. It can only be used in the sc_thread. But in my code, (excerpt) I am currently using SC_thread and sc_method simultaneously. I wanted to introduce a delay in simulation time in the sc_thread (using the wait command). Is there a way to forward the simulation time in SC_METHOD that is analogous to wait() in SC_Thread. I did change one of the functions to SC_Thread, and the other to SC_Method. But, on simulation, if the kernel picks up on the SC_Method, it continues to stay in SC_Method and not go on to SC_thread. Here is the code for SC_Method: (code for SC_THREAD is given after this code) void NoximRouter::rxProcess_local() { cout<<"rxProcess_local"; // Clear outputs and indexes of transmitting protocol ResetTable(); current_level_rx_local = 0; } else {//cout<<req_rx_local.read()<<" "<<current_level_rx_local<<endl; if((req_rx_local.read()== 1- current_level_rx_local) && !buffer_snd.IsFull()) { //current_level_rx = 1 + current_level_rx; NoximPacket received_packet = flit_rx_local.read(); //cout<<"Inside NoximRouter::rxProcess_local:"<<received_packet<<endl; buffer_snd.Push(received_packet); // cout<<"receiver"<<endl; if (NoximGlobalParams::verbose_mode > VERBOSE_OFF) { cout << sc_time_stamp().to_double() / 1000 << ": Router[" << local_id << "], Received packet from PE: " << received_packet << endl; } current_level_rx_local = 1 - current_level_rx_local; } ack_rx_local.write(current_level_rx_local); THIS IS PART OF THE CODE FOR SC_THREAD: void NoximRouter::txProcess_mode() { cout<<"txProcess_mode"; while( buffer_snd.Size()!=0) //Going with just one buffer(may be corresponding to the router,... but actually for the processing element) { NoximPacket packet = buffer_snd.Front(); NoximRouteData route_data; route_data.current_id = local_id; route_data.src_id = packet.src_id; route_data.dst_id = packet.dst_id; const vector < vector<int> > o = Route(route_data); //stats.power.Arbitration(o.size()); int src= packet.src_id; vector <int> path; int col =0; // checking in the global table the channels which are free and writhing to the respective channels path.push_back(src); packet.dir=checkdir(o); if(checkmode1(path,o,src,col,packet)==1) { buffer_snd.Pop(); cout<<"Mode1\n"; packet.seq_no=path; packet.mode_tx=1; flit_tx.write(packet); mode1_traffic++; stats.pkthist.push_back(makePacketHist(packet)); for(int i=0;i<path.size();i++) {
  5. are wait() capable to synthesis in systemc?
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