Setting The Oscillator Frequency; Setting The Flash Rom Type - AOpen AP41 User Manual

Hardware Setup

Setting the Oscillator Frequency

You must reset jumpers JP30, JP31 and JP32 if you change the
oscillator frequency.
25 MHz
JP30
JP31
JP32

Setting the Flash ROM Type

Set jumper JP4 according to the type of Flash ROM in use. If the
system uses a 5V EEPROM (or 5V Flash ROM) instead of a 12V
Flash ROM, you must set the jumper to 2-3. The default setting is
2-3.
12V Flash ROM
5V EEPROM
ROM
2-14
33 MHz 40 MHz
JP4
or Flash
User's Guide