Filter
Top Products
JUMPERS
The default settings are highlighted in the tables that follow.
CPU Frequency Setting (JP3)
Frequency 1-3 2-4 3-5 4-6
50 MHz OFF OFF ON ON
66 MHz/100 MHz* ON ON OFF OFF
75 MHz OFF ON ON OFF
83.3 MHz ON OFF OFF ON
*Intel Celeron CPU will auto-detect 66 MHz.
* Intel Pentium III (FC-PGA) CPU will auto detect 100MHz.
*Refer to figure 2 for the location of JP3.
CPU Multiplier Setting (JP8)
Ration 1-2 3-4 5-6 7-8
3.0 x ON OFF ON ON
3.5 x ON OFF OFF ON
4.0 x OFF ON ON ON
4.5 x OFF ON OFF ON
5.0 x OFF OFF ON ON
5.5 x OFF OFF OFF ON
6.0xONONONOFF
6.5 x ON ON OFF OFF
7x ON OFF ON OFF
7.5x ON OFF OFF OFF
8x OFF ON ON OFF
Refer to figure 2 for the location of JP8.
Watchdog Timer Type Setting (JP5)
The Watchdog Timer is enabled by reading port 443H. It should be triggered be
-
fore the timeout period ends; otherwise, it will assume the program operation is
abnormal and will issue a reset signal to reboot or activate NMI to CPU. The
Watchdog Timer is disabled by reading port 043H.
Pin Number Description
1-2 NMI
2-3 RESET
Refer to figure 2 for the location of JP5.
Board Configuration 13