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Using the SCU
The SCU is the main tool to configure the system or to check or change the
configuration. Many system settings can be entered from either the SCU or
Setup, but the SCU provides conflict resolution as well as access to
information about ISA, ISA Plug and Play, and PCI adapters. The SCU is
PCI-aware, and it complies with the ISA Plug and Play specifications. The
SCU works with any compliant configuration (.CFG) or overlay (.OVL) files
supplied by a peripheral device manufacturer.
System must have a diskette drive
The system must have a diskette drive present and enabled
to use the SCU. If a diskette drive is present but is disabled
or misconfigured, use the BIOS Setup utility to enable or
configure the drive.
Where the SCU Gets Information
Source
Configuration (.CFG)
and
overlay (.OVL) files
Configuration
registers
User selected
options
Using information from the sources listed above, the SCU stores the system
configuration in ISA CMOS and system nonvolatile storage (NVRAM or
flash memory).
At power-on or rebooting, the BIOS POST routines and the Plug and Play
Auto Configuration Manager check and configure the hardware. If
possible, POST will program the hardware according to the configuration
stored by the SCU; if conflicts exist, an error message will be generated.
You must then use the SCU to correct the conflict before the system boots.
R440LX Server Motherboard Product Guide
Description
For the motherboard, we provide a .CFG file and an .OVL file
with the SCU. These files describe the board's characteristics
and the system resources required. Some ISA adapters come
with a diskette that contains a .CFG file (and an optional .OVL
file).
Information and required resources for PCI and Plug and Play
adapters are derived from the adapter's configuration registers.
The SCU displays the exact system configuration and the
user's current settings by reading ISA CMOS and system
nonvolatile storage (NVRAM or flash memory).
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