Gadgets are needed to adhere to a protocol so that the interrupt-ask for (IRQ) traces is often shared. The PCI bus features four interrupt traces, INTA# via INTD#, all of which are available to each device. Approximately 8 PCI gadgets share the identical IRQ line (INTINA# by INTINH#) in APIC-enabled https://nathanlabsadvisory.com/ce-marking-services-european-notified-body/