NEC 1080Xd - Manual (Page 156)

4-48 BIOS Setup
Table 4-21. PCI Bus Configuration Submenu
Item Option Description
HBB #N (W/X/Y/Z) [Auto]
1
2
3
HBB #N (W/X/Y/Z):
N: HBB number (0 - 63)
W: Cell Board number (0 - 7)
X: IOC number (0 - 1)
Y: GSL number (0 - 1)
Z: PCI bus number (0 - 1)
Displays/sets the number of the PCI buses supported by
the host PCI bus bridge.
Auto: BIOS automatically sets the optimal size.
Other than Auto: Select from the pop-up menu.
[ ]: Default setting