NEC 1080Xd - Manual (Page 154)

4-46 BIOS Setup
Table 4-20. IO Space Configuration Submenu
Item Option Description
HBB #N (W/X/Y/Z) [Auto]
256Byte
512Byte
1KB
4KB
8KB
16KB
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 I/O space size of the host PCI bus
bridge.
Auto: BIOS automatically sets the optimal size.
Other than Auto: Select from the pop-up menu.
[ ]: Default setting
When [Auto] is selected, the BIOS detects the PCI devices installed on the host PCI bus
bridge. The BIOS automatically sets the optimal I/O resource size. When the sum of
specified I/O resource size is smaller than the I/O resource size of the system (64 KB), a
surplus I/O resource size is used for the host PCI bus bridge with the largest number.
The sum of the specified I/O resource size must be smaller than 64kB or must be 64kB.
If the size is larger than 64kB, the system detects a setting error at the next start up and
the I/O resource size settings are initialized. (The procedure is the same as selecting
option [Auto].)