Products are needed to stick to a protocol so the interrupt-ask for (IRQ) strains could be shared. The PCI bus features four interrupt lines, INTA# by INTD#, all of which are offered to every gadget. As many as 8 PCI gadgets share the exact same IRQ line (INTINA# through INTINH#) https://nathanlabsadvisory.com/smart-contract-audit-copyright-companies-1/