TYAN TAHOE 2 ATX Manual page 16

2.5.6 Flash ROM-Jumper J56
The S1682D uses flash memory to store BIOS Setups. It can be updated
as new versions of the BIOS become available. The flash utility will guide
you through the process step by step. However, we do not recommend
that you flash the onboard BIOS. This procedure should only be
done by a qualified technician or a Tyan technical support engineer.
J56 determines which type of Flash EPROM is used. This jumper has been
set to match the onboard BIOS chip. The factory default for the S1682D
is on pins 1-2(5V). Depending on the type of EPROM used, some boards
will have J56 on pins 2-3(12V). (Refer to Page 13 for more information.)
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W arning!!
*Do not change J56--(It has been pre-configured at the factory.)
2.5.7 Hardware CMOS & Password Reset
If you are locked out of your system because you have forgotten your
password, or you have set the CMOS incorrectly, follow the instructions
below.
a. Power off the system.
b. Short J44 by covering Pin 1 and Pin 2 of J44 with a jumper cap
and short the circuit between these two pins.
c. Wait for 5 seconds, and, then, remove the jumper cap from J44.
d. Apply power to the system.
By following the above procedures, the password and CMOS will be reset
to BIOS defaults.
S1682D-001-02 http://www.tyan.com 16