ESL TLM in SystemC: TLM 2.0

Although there was a limited capability in SystemC 1.0 to pass threads along channels, and hence do subroutine calls along what look like wire, this was made much easier SystemC 2.0.

TLM2.0 (July 2008) tidies away the TLM1.0 interface inheritance using convenience sockets and defines the generic payload.

It also defined memory/garbage ownership and transport primitives with timing and fast backdoor access to RAM models.

And it provided a raft of useful features, such as automatic conversion between blocking and non-blocking styles.

// Filling in the fields or a TLM2.0 generic payload:
  trans.set_command(tlm::TLM_WRITE_COMMAND);
  trans.set_address(addr);
  trans.set_data_ptr(reinterpret_cast(&data));
  trans.set_data_length(4);
  trans.set_streaming_width(4);
  trans.set_byte_enable_ptr(0);
  trans.set_response_status( tlm::TLM_INCOMPLETE_RESPONSE );

// Sending the payload through a TLM socket:
  socket->b_transport(trans, delay);