ECU
In order for your system to operate properly, the ECU must be
run when new memory is added or EISA add-in boards are
installed.
The ECU is located on a 3.5-inch system configuration disk
that comes with your system.
The ECU floppy disk contains configuration files for various
system option boards, such as I/O subsystem, multiport, and
LAN (local area network) boards.
The ECU stores the configuration information in the
non-volatile flash memory on your system. This means when
you exit the ECU the configuration information is written to
flash memory.
The ECU also maintains the Setup configuration, which is
stored in the battery-backed memory of the RTC (real-time
clock). This means that when you exit the ECU, the
battery-backed memory and the FLASH memory will agree
with each other.
If the diskette is write-enabled when you configure your
system, the ECU automatically creates an SCI (system
configuration information) file that you can use to restore your
system configuration.
Note: The flash memory must be write-enabled before you can
run the ECU. The NVRAM jumper on the system board must be
in the ON position or the settings will not be saved. Refer to the
“Reprogramming the BIOS” and “Resetting the NVRAM and
RTC” sections later in this chapter.
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3-9
Configuring Your System
