The prtconf(1M) command (excerpted example follows) displays all the devices in the system:
SUNW,Ultra-1 ... pci, instance #0 ebus, instance #0 auxio (driver not attached) power (driver not attached) SUNW,pll (driver not attached) sc (driver not attached) se, instance #0 su, instance #0 su, instance #1 ecpp (driver not attached) fdthree (driver not attached) eeprom (driver not attached) flashprom (driver not attached) SUNW,CS4231 (driver not attached) network, instance #0 scsi, instance #0 disk (driver not attached) tape (driver not attached) sd, instance #0 sd, instance #1 (driver not attached) sd, instance #2 (driver not attached) sd, instance #3 (driver not attached) sd, instance #4 (driver not attached) sd, instance #5 (driver not attached) .... pci, instance #1 SUNW,UltraSPARC-II (driver not attached) SUNW,ffb (driver not attached) pseudo, instance #0