Equipment Are necessary to adhere to a protocol so which the interrupt-ask for (IRQ) traces may be shared. The PCI bus contains four interrupt traces, INTA# through INTD#, all of which can be obtained to each machine. Approximately 8 PCI products share exactly the same IRQ line (INTINA# through INTINH#) https://nathanlabsadvisory.com/fair-risk-assessment/