Products Are required to comply with a protocol so that the interrupt-request (IRQ) traces can be shared. The PCI bus contains 4 interrupt lines, INTA# through INTD#, all of which are offered to each gadget. Up to eight PCI units share a similar IRQ line (INTINA# via INTINH#) in APIC-enabled https://nathanlabsadvisory.com/open-source-scanning-oss/