Products Are necessary to observe a protocol so that the interrupt-ask for (IRQ) traces might be shared. The PCI bus features 4 interrupt traces, INTA# via INTD#, all of which are offered to every machine. Around eight PCI equipment share the identical IRQ line (INTINA# via INTINH#) in APIC-enabled x86 https://nathanlabsadvisory.com/financial-cyber-security-consulting/