Jp11, Jp12: Bus Ratio Select; Jp2, Jp3: External Bus Frequency Select - SOLTEK SL-53A2 User's Manual & Technical Reference

JP11, JP12: Bus Ratio Select

Set these jumpers according to your CPU clock.

JP2, JP3: External Bus Frequency Select

These 2 jumpers tells the clock generator what frequency to
send to the CPU. Set these jumpers as shown, according to
the CPUÕs internal clock speed. (For IMI Clock Generator.)
Ratio
1.5X
(default)
2X
2.5X
3X
Settings
50MHz
55MHz
60MHz
66MHz
(default)
JP11
JP12
JP3, JP2
Hardware Installation 19