User Guide

Hardware Installation
2-14
2.7.5 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 opening jumper JP14 and changing
the BIOS setup. For detailed
information on BIOS, see Chapter 3.
2.7.6 Setting the Keyboard Clock
The jumper JP15 enables you to set the
keyboard clock. The clock selections
are ISA clock and 12 MHz. Set JP15 to
1-2 to select the ISA clock. Reset it to
3-4 to set the keyboard clock to 12 MHz.
JP14
JP15
Enabled
(default)
Disabled
ISA clock
(default)
12 MHz