7
Manual
Rev. A
CMOS Clearing
CMOS Clear, which is a safety hook if you forget the password. Sometime , if
user change the CPU and making the BIOS difficult to recognize the CPU
type, Clear CMOS will help BIOS to re-config the system successfully.
Follow the steps:
After you have turned off your computer, clear the CMOS memory by mo-
mentarily shorting pins 2-3, for a few seconds. Then restore it to the initial
1-2 jumper setting in order to recover and retain the default settings. Reset
your computer now.
J11 ( 66MHZ / 100 MHZ Switching )
If overclock the CPU from 66MHZ to 100 MHZ on the jumperless design mother
board the following symptom will happen:
The AGP card will run 100 MHZ with the AGP Clock, inside the AGP
Chip will run up to 200MHZ ( For 2x AGP Card ) instead of the
66MHZ x 2 = 133MHZ
That¡¦s because the CPU origonal is 66MHZ FSB design by Intel, When you
overclock the CPU to 100MHZ, the Chipset didn¡¦t know you force the Clock
to 100MHZ by BIOS, it will let the 100MHZ as AGP Clock. If you use the
66MHZ for that CPU, the AGP Card clock will be 66MHZ; If you use the
origonal 100 MHZ FSB CPU , the Chipset recognized the CPU is 100MHZ
FSB design, it will reduce the 100MHZ / 1.5 = 66MHZ, then the AGP will run
66MHZ( Inside AGP will be 66MHZ x 2 = 133 MHZ ).
If use the 100MHZ FSB,
Regardless use the 66MHZ or 100MHZ type CPU
Set the J11 to OFF.
