Intel 810 Baby AT Mainboard
HARDWARE SETUP
3-19
(B) JP2: CPU Voltage Range Selection
JP2 is designed on the mainboard, which allows you to select the CPU core
voltage range (Vcore) to protect the CPU.
The voltage regulator on the mainboard will generate 1.3V ~ 3.5V DC to support
different processors. Basically, most mainboards will use the CPU VID signal
(VID0~VID4) from the CPU to decide the proper CPU core voltage (Vcore). In
case that there is the poor connection between CPU and its socket, or uninstall the
CPU from the mainboard while the system power is "ON". Under such
circumstance, mainboard may receive wrong VID signal and send wrong Vcore to
the CPU. Unfortunately, wrong Vcore may destroy the CPU and the mainboard.
JP2 is designed to control the Vcore within the safe range so that it won't make any
damage to the CPU or mainbord because of wrong VID signal.
Since most Pentium II/III processors require the Vcore below 2.05V except few
Pentium II processors. So the default setting of JP2 will control the Vcore between
1.3V and 2.05V so that the CPU and mainboard will have a good protection.
Please do not change the setting on JP2 unless your CPU needs the voltage higher
than 2.05V.
U12
OPEN: Vcore = 1.3V ~ 2.05V
SHORT : Vcore = 1.3V ~ 3.5V.
JP2
Note: Please do not change the default setting on JP2 unless
your CPU needs the voltage higher than 2.05V.
