Disabling The Ps/2 Mouse Function; Setting The Keyboard Clock - AOpen AP53 User Manual

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 JP4 and changing the
BIOS setup. For detailed information on
BIOS, see Chapter 3.

2.7.6 Setting the Keyboard Clock

The jumper JP1401 enables you to set
the keyboard clock. The clock
selections are ISA clock and 12 MHz.
Set JP1401 to 1-2 to select the ISA
clock. Reset it to 3-4 to set the keyboard
clock to 12 MHz.
Hardware Installation
Enabled
(default)
Disabled
ISA clock
(default)
12 MHz
JP4
JP1401
2-13