System Features
EPM-32 Reference Manual
25
S
AVING
CMOS
S
ETUP
P
ARAMETERS AS
C
USTOM
D
EFAULTS
To save CMOS Setup parameters to custom defaults, you will need a DOS bootable floppy with
the FBU utility on it.
1.
Boot the EPM-32 and enter CMOS Setup by pressing Delete during the early boot cycle.
2.
Change the CMOS parameters as desired and configure the floppy drive as the first boot
device:
Basic CMOS Configuration | BOOT ORDER | Boot 1st = Drive A:
3.
Save the settings and exit CMOS Setup.
4.
Reboot the system from the DOS boot floppy.
5.
Run FBU and select Save CMOS contents. A file named CMOS.BIN is created and
saved to the floppy.
6.
Select the FBU option Load Custom CMOS defaults. A directory of the floppy is
displayed.
7.
Select the CMOS.BIN file and press the P key to program the new CMOS defaults.
8.
Reboot the system from the hard disk. The custom CMOS parameters are now saved as
defaults.
Real Time Clock
The I/O Controller Hub (ICH4) on the south bridge board contains a Motorola MC146818A-
compatible real-time clock with 256 bytes of battery-backed RAM. The RTC operates on a
32.768 kHz crystal and a separate 3V lithium battery that provides up to seven years of
protection. Under normal battery conditions, the clock maintains accurate timekeeping functions
when the board is powered off.
S
ETTING THE
C
LOCK
The CMOS Setup utility (accessed by pressing the [DEL] key during a system boot) can be used
to set the time/date of the real-time clock.
