User`s manual

Chapter 4 Configuring the Motherboard
14 TI6VGA User’s Manual
4.3 JP2(7-8): SDRAM Clock Select
Use JP2(7-8) to set the SDRAM clock. If the SDRAM on board is
PC-66 compatible (instead of PC-100), while your CPU bus speed
is 100MHz, you have to short JP2(7-8). Failing to do so could lead
to an unstable system.
JP2(7-8) Setting Function
Open Run CPU Clock
Short Run AGP Clock
4.4 CPU Host Frequency Force Selector: JP4
The TI6VGA is able to detect the host frequency (66MHz or 100MHz) of
the installed CPU. The JP4 jumper, however, can be set to
OPEN
to
override the detection and force the host frequency to run at 100MHz.
JP4 Function JP4 Function
SHORT
Host Frequency
Auto-detect
(default)
OPEN
Host Frequency
set to
100MHz