User Guide

Hardware Installation
2-12
2.7.2 Disabling the Onboard Super I/O Controller
The board is preset by the manufacturer
with the onboard I/O controller enabled.
In case you wish to use an external I/O
controller, you need to disable the
onboard I/O before the external I/O card
functions. To disable, you need to reset
jumper JP6 to 1-2.
2.7.3 Setting the Keyboard Clock
By default, the keyboard clock is set
according to the ISA clock. If you want
to increase the clock setting to 12 MHz
by simply resetting jumper JP7 to 1-2.
2.7.4 Disabling the PS/2 Mouse Function
The PS/2 mouse function is normally
enabled and occupies IRQ12. To
reassign IRQ12 to another function, you
need to disable the PS/2 mouse function
by setting jumper JP8 2-3 and changing
the BIOS setting (see Chapter 3).
Enabled
Disabled
ISA Clock
12 MHz
Enabled
Disabled
JP6
JP7
JP8