0 = Intern
6 = VME-Bus
12 = Interner Prozessor
1 = ISA
7 = NuBus
13 = Interner Power-Bus
2 = EISA
8 = PCMCIA-Bus
14 = PNP-ISA-Bus
3 = MicroChannel
9 = C-Bus
15 = PNP-Bus
4= TurboChannel
10 = MPI-Bus
16= Maximaler Schnittstellentyp
5 = PCI-Bus
11 = MPSA-Bus