Products are necessary to follow a protocol so the interrupt-request (IRQ) lines is often shared. The PCI bus incorporates four interrupt lines, INTA# by means of INTD#, all of which can be found to every machine. As many as 8 PCI units share a similar IRQ line (INTINA# as a https://nathanlabsadvisory.com/key-components-of-a-successful-incident-response-strategy/