Products are necessary to stick to a protocol so that the interrupt-request (IRQ) strains can be shared. The PCI bus consists of 4 interrupt lines, INTA# through INTD#, all of which are offered to each gadget. Approximately eight PCI products share the same IRQ line (INTINA# through INTINH#) in APIC-enabled https://nathanlabsadvisory.com/hipaa-hitech-compliance/