ASUS TXP4 User’s Manual 15
III. INSTALLATION
Jumper Settings
1. Flash ROM Boot Block Programming (BBLKW)
This sets the operation mode of the boot block area of the Programmable Flash ROM
to allow programming in the Boot Block Write Enable position. This is required only
if prompted by the Flash Memory Writer Utility (see BIOS SOFTWARE).
Boot Block Programming
Boot Block
Write-Protect
(Default)
BBLKW
Boot Bock
Write Enable
BBLKW
R
2. Real Time Clock (RTC) RAM (RTCLR)
The CMOS RAM is powered by the onboard button cell battery. To clear the
RTC data: (1) Turn off your computer and unplug the AC power, (2) Move this
jumper to Clear CMOS, (3) Move the jumper back to Keep CMOS, (4) Turn on
your computer, (5) Hold down <Delete> during bootup and enter BIOS setup to
re-enter user preferences.
Battery Test Jumper (RTCLR)
You can test the battery’s current by removing this jumper and attaching a cur-
rent meter to pins 1 & 2.
WARNING! You must unplug the power cord to your power supply to ensure
that there is no power to your motherboard. The CMOS RAM containing BIOS
setup information may be cleared by this action. You must enter BIOS to “Load
Setup Defaults” and re-enter any user information after removing and reapply-
ing this jumper.
RTC RAM
Clear CMOS
RTCLR
Keep CMOS (Default)
RTCLR
Battery Test
R
III. INSTALLATION
(Jumpers)
RTC RAM RTCLR
Keep CMOS [1-2] (Default)
Clear CMOS [2-3] (momentarily)
Programming BBLKW
Boot Block Write-Protect [1-2] (Default)
Boot Block Write Enable [2-3]
