Equipment are needed to abide by a protocol so the interrupt-request (IRQ) traces can be shared. The PCI bus includes four interrupt strains, INTA# by way of INTD#, all of which are offered to every gadget. Around 8 PCI equipment share the same IRQ line (INTINA# as a result of https://nathanlabsadvisory.com/achieving-fisma-certification-in-the-usa-ensuring-robust-information-security/