What allows a system to be configured so that only selected

What allows a system to be configured so that only selected devices will make request for an interrupt

Solution

A programmable interrupt controller can be used for such purposes. It allows the user to configure the servicing of interrupts by the processor. We can assign priorities to the interrupts , check the status of interrupts being serviced and also decide which interrupts are to be serviced and which are not to be. This all is done by sending appropriate data into registers such as IMR - interrupt mask register.