AOpen AX5TC User Manual page 89

Jumper Table Summary
Frequency
PR2-166 166MHz =
PR2-200 200MHz =
PR2-233 233MHz =
PR2-266 266MHz=
PR2-300 300MHz=
IDT C6 CPU Core
Frequency
C6-150 150MHz =
C6-180 180MHz =
C6-200 200MHz =
Clear CMOS
JP14 Clear CMOS
1-2 Normal operation
(default)
2-3 Clear CMOS
C-4
Bus Clock
2.5x 66MHz ON
3x 66MHz OFF ON
3.5x 66MHz OFF OFF OFF 1-2 & 1-2 & 1-2
4x 66MHz ON
4.5x 66MHz ON
Ratio External S1
Bus Clock
2x 75MHz ON
3x 60MHz OFF ON
3x 66MHz OFF ON
ON OFF 1-2 & 1-2 & 1-2
OFF 1-2 & 1-2 & 1-2
OFF ON 1-2 & 1-2 & 1-2
ON ON 1-2 & 1-2 & 1-2
S2 S3 JP4 & JP5 & JP6
OFF OFF 1-2 & 2-3 & 1-2
OFF 2-3 & 1-2 & 1-2
OFF 1-2 & 1-2 & 1-2