An I2C verification environment, which uses memories and VPI (c code) to drive and monitor data to/from DUT, will be described in this work.

1. In this site many verification environments have been presented, using, specman , VHDL etc....
   The main page of this work is accessed with the following link.
   This page describes how APB transaction are done.


2. This page shows a simple scoreboard implementation. I2C items are inserted to the scoreboard each time it sent to the DUT. Each time a data item arrives from the DUT output it checked with first item in the scoreboard.


3. As in example the scoreboard is implemented in c++ using queues and rest of the code is implemented in c. The usage makes the scoreboard implementation simple.
   
   ...
   extern "C" int scbd_add(t_mem_init item)
   {
     std::cout << "scbd: ad=" << (unsigned)item.addr << " d=" << (unsigned)item.data << " ctrl=" << (int)item.ctrl << " dir=" << (int)item.dir << " \n";
     if(item.dir == t_in) { //add item
       scbd_q.push (item);
     }
     else { //compare
       if( scbd_q.empty() ) {
         std::cout << "scbd: error queue empty " << "\n";
         return -1;
       } else {
         t_mem_init scbd=scbd_q.front();
         scbd_q.pop();
         //compare
         unsigned char flg=0;
         if(item.addr != scbd.addr) {
   ...
   


4. The code can be downloaded from: C++ scoreboard code .