BIOS Setup 4-59
BIOS Virtual DIP Switch
What is BIOS Virtual DIP Switch?
SP command “su” specifies the settings of the BIOS virtual DIP switch. When the
setting value specified in Table 4-28 is set to the BIOS virtual switch, the BIOS
performs the operation described in the table. A logical-or of the setting value in
Table 4-28 can be set to the BIOS virtual DIP switch. When this happens, the BIOS
performs plural operations at the same time.
!
CAUTION
Changing a setting can cause the server to lose system
configuration information. Use the virtual DIP switch function with
caution. Call your system administrator or NEC Technical Support
personnel for help before setting this switch.
Table 4-28. Virtual DIP Switch Setting Value
Setting Value
Operation
80000000
Clears CMOS/NVRAM entirely.
40000000
Clears the Supervisor/User Password specified by Setup.
20000000
Clears only the area of CMOS/NVRAM used by the BIOS.
10000000
Clears only the area of NVRAM used by EFI/OS.
00000100
PCI-X Performance Increase
00001000
USB FDD ATAPI emulation mode
00002000
Disable I/O slot power control from OS
00000004
Enables CMC 1H Mask function.
00000002
BIOS/EFI can use USB devices.
00000001
Disables PCI Online Maintenance function.
00003102
Windows Server 2003
00000000
Linux (NEC Linux)
Note: PCI Online Maintenance means PCI Hot Plug
CMOS/NvRAM Clear (80000000/40000000/20000000/10000000)
For information on the setting value to clear CMOS/NvRAM, refer to “When You Should Change the
Settings” earlier in this chapter. The setting value is cleared to “0” when CMOS/NvRAM is cleared.
Enables CMC 1H Mask function (00000004)
Setting the bit to “1” enables the CHC 1H Mask function. If the bit is not cleared to “0”, the bit setting value
“1” remains. SP command “su” is used to clear the bit to “0”.
BIOS/EFI can use USB devices (00000002)
Setting the bit to “1” enables the BIOS/EFI to use USB devices. If the bit is not cleared to “0”, the bit
setting value “1” remains. SP command “su” is used to clear the bit to “0”.
Disables PCI online maintenance function (00000001)
Setting the bit to “1” disables the PCI online maintenance function. If the Operating System does not
support PCI online maintenance, the bit should be set to “1”. System startup may be faster. If the bit is not
cleared to “0”, the bit setting value “1” remains. SP command “su” is used to clear the bit to “0”.
Summary of Contents for 1080Xd
Page 1: ... U s e r s G u i d e EXPRESS5800 1080Xd ...
Page 2: ......
Page 4: ......
Page 15: ...1 System Overview Overview System Features System Chassis System Functions Expansion Security ...
Page 51: ...3 Service Processor SP Console OS Console Virtual SOP SP Command Console SP Command Reference ...
Page 172: ......
Page 189: ...6 Problem Solving Solving Simple Problems Troubleshooting the System ...
Page 193: ...A Technical Specifications Main Chassis DVD ROM Drive Tape Drive FDD ...
Page 198: ......
Page 199: ...B Memory Upgrades Memory Configurations DIMM Installation ...
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Page 216: ... 456 01683 001 ...