Self-Identifying Devices

Some devices are self-identifying--the device itself provides information to the system so that it can identify the device driver that needs to be used. SBus and PCI local bus devices are examples of self-identifying devices. On SBus, the information is usually derived from a small Forth program stored in the FCode PROM on the device. PCI devices provide a configuration space containing device configuration information. See sbus(4) and pci(4) for more information.