Equipment are required to follow a protocol so that the interrupt-ask for (IRQ) traces is usually shared. The PCI bus includes 4 interrupt strains, INTA# as a result of INTD#, all of which are available to every system. Nearly 8 PCI units share the same IRQ line (INTINA# by means https://nathanlabsadvisory.com/ensuring-secure-payment-processing-with-pci-dss-compliance-certification-in-the-usa/