Equipment are required to adhere to a protocol so that the interrupt-ask for (IRQ) strains is usually shared. The PCI bus incorporates 4 interrupt strains, INTA# by INTD#, all of which can be obtained to each device. Approximately 8 PCI devices share exactly the same IRQ line (INTINA# through INTINH#) https://nathanlabsadvisory.com/meta-verse/