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3.3 CMOS RTC
CMOS RTC includes an internal battery and Real Time Clock circuit. It
provides the date and the time for the system. Normally the life span of a
RTC internal battery is 10 years. When replacing, you should use the same
model.
3.4 Flash EEPROM-Jumper J43
The S1672 uses flash memory to store BIOS data. It can be updated as
new versions of the BIOS becomes available. The flash utility will guide
you through the process step by step. If your system is functioning properly,
you may want to forego updating your BIOS in the event the new one
causes problems with your existing hardware and software.
J43 determines which type of EPROM is used. This jumper has been set
to match the on board BIOS chip. The factory default for the S1672 is on
pins 1-2.
Refer to chapter 6 for Flash EEPROM upgrade procedures.
3.5 Hardware CMOS & Password Reset
(The following steps are valid provided the board has a DS12887A RTC)
If you have been locked out of your system because you forgot your pass-
word or set the CMOS incorrectly, follow the instructions below.
a. Power off the system
b. Short jumper J42.
c. Wait for 5 seconds then remove the jumper from J42.
d.Then power on the system again.
By doing the above procedures, your password will be erased and the CMOS
will be reset to the BIOS defaults.
S1672-ATX-001 http://www.tyan.com
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