TLM Modelling: Adding Timing Annotations Continued

If every component executes an sc_wait to model its processing time, the SystemC kernel overheads kill performance.

Instead, we'll pass a time accumulator variable around for various models to augment:

  putbyte(char d, sc_time &dt)
  {
    ...
    dt += sc_time(140, SC_NS);
  }

This is fine for sequential composition of time values.

At any point, any component can execute

   sc_wait(dt);
   dt = 0;

At a parallel fork, we need to make a fresh accumulator variable and at any join we ...