Products are necessary to stick to a protocol so that the interrupt-ask for (IRQ) traces might be shared. The PCI bus incorporates 4 interrupt strains, INTA# as a result of INTD#, all of which are offered to each machine. Around 8 PCI equipment share the same IRQ line (INTINA# as https://nathanlabsadvisory.com/cisa-certified-information-system-auditor/