/-motherboard
            |
            +- npx0: <math processor> on motherboard
            |
            \- pcib0: <Host to PCI bridge> on motherboard
                   |
                   \- pci0: <PCI bus> on pcib0
                      pci0: <unknown card> at 7.5 irq 2
                      pci0: <unknown card> at 7.5 irq 2
                         |
                         +- atapci0: <AMD 768 ATA100 controller> on pci0
                         |        |
                         |        +- ata0: on atapci0
                         |        |
                         |        \- ata1: on atapci0
                         |              |
                         |              +- acd0: DVD-ROM <Pioneer DVD-ROM ATAPIModel DVD-106S 0108> at ata1-master
                         |              |
                         |              \- acd1: CD-RW <PLEXTOR CD-R PX-W1210A> at ata1-slave
                         |
                         +- chip1: <PCI to Other bridge on pci0
                         |
                         +- isab0: <PCI to ISA bridge on pci0
                         |      |
                         |      \- isa0: <ISA bus> on isab0
                         |            |
                         |            +- atkbdc0: <Keyboard controller (i8042)> on isa0
                         |            |        |
                         |            |        +- atkbd0: <AT Keyboard> on atkbdc0
                         |            |        |       | 
                         |            |        |       \-kbd0 at atkbd0
                         |            |        |       
                         |            |        \- psm0: <PS/2 Mouse> on atkbdc0
                         |            |        
                         |            +- vga0: <Generic ISA VGA> on isa0
                         |            |
                         |            +- sc0: <System console> on isa0
                         |            |
                         |            +- sio0 on isa0
                         |            |
                         |            +- sio1 on isa0
                         |            |
                         |            +- ppc0: <Parallel port> on isa0
                         |            |
                         |            +- orm0: <Option ROMs> on isa0
                         |            |
                         |            \- fdc0: <NEC 72065B or clone> on isa0
                         |                  |
                         |                  \- fd0: <1440-KB 3.5" drive> on fdc0
                         |
                         +- sym0: <896> on pci0
                         |
                         +- sym1: <896> on pci0
                         |     |
                         |     \- da0 at sym1 bus 0 target 6 lun 0
                         |
                         +- pcib1: <PCI to PCI bridge on pci0
                         |      |
                         |      \- pci1: <PCI bus> on pcib1
                         | 
                         \- pcib2: <PCI to PCI bridge on pci0  
                                |
                                +- pci2: <PCI bus> on pcib2
                                |     |
                                |     \- dc0: <ADMtek AN985 10/100BaseTX> on pci2
                                |          |
                                |          \- miibus0: <MII bus> on dc0
                                |                   |
                                |                   \- ukphy0: <Generic IEEE 802.3u media interface> on miibus0
                                | 
                                \- pci2: <USB controller> at 4.2 irq 5
                                      |
                                      +- ohci0: <OHCI (generic) USB controller> on pci2 
                                      |      |
                                      |      \-usb0: <OHCI (generic) USB controller> on ohci0
                                      |      
                                      \- ohci1: <NEC uPD 9210 USB controller> on pci2
                                       |      |
                                       |      \- usb1: <NEC uPD 9210 USB controller> on ohci1
                                       |      
                                       \- ohci2: <NEC uPD 9210 USB controller> on pci2
                                             |
                                             \- usb2: <NEC uPD 9210 USB controller> on ohci2