Processor Description Languages

286 CHAPTER 11 Processor Design with ArchC

Now that we know how interrupts work inside the processor, what we have

to understand is how an external module interrupts the processor. First, when-

ever you declare an

ac_tlm_intr_port in your project_name.ac file you will have an

ac_tlm_intr_port as a member of your processor module.

This

ac_tlm_intr_port has the exact same name you declared in

project_name.ac, which in this case is inta. The ac_tlm_intr_port is-a (inherits

from)

sc_export<ac_tlm_transport_if>, and this export is bound to itself, because

ac_tlm_intr_port also implements the transport() method mentioned earlier, and this

method has a fixed implementation, ...