Devices are necessary to adhere to a protocol so the interrupt-ask for (IRQ) traces is usually shared. The PCI bus incorporates four interrupt lines, INTA# through INTD#, all of which can be obtained to every system. Around 8 PCI gadgets share a similar IRQ line (INTINA# through INTINH#) in APIC-enabled https://nathanlabsadvisory.com/achieve-hitrust-compliance-in-the-usa-to-protect-sensitive-health-information/