Devices are required to adhere to a protocol so which the interrupt-request (IRQ) strains is usually shared. The PCI bus consists of 4 interrupt strains, INTA# by way of INTD#, all of which are offered to each unit. Approximately 8 PCI devices share precisely the same IRQ line (INTINA# as https://nathanlabsadvisory.com/smart-contract-audit-copyright-companies-1/