Devices Are required to follow a protocol so the interrupt-request (IRQ) traces can be shared. The PCI bus incorporates 4 interrupt lines, INTA# by means of INTD#, all of which can be obtained to every device. Approximately eight PCI products share the same IRQ line (INTINA# by INTINH#) in APIC-enabled https://nathanlabsadvisory.com/why-iso-17025-certification-in-uae-is-essential-for-your-laboratory/