Devices are required to follow a protocol so that the interrupt-request (IRQ) strains is usually shared. The PCI bus incorporates four interrupt lines, INTA# through INTD#, all of which are offered to each machine. Approximately eight PCI products share a similar IRQ line (INTINA# as a result of INTINH#) in https://nathanlabsadvisory.com/hipaa-hitech-compliance/