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PPC-A84 User's Manual
2.4.2 PS/2 keyboard and PS/2 mouse
The PPC-A84 provides two PS/2 connectors that support a PS/2 style
keyboard and a PS/2 mouse. In most cases, especially in embedded applica-
tions, a keyboard is not used. The standard PC/AT BIOS will report an error
or failure during power-on self-test (POST) after a reset if the keyboard is not
present. The BIOS standard setup menu allows you to select* "All , But
Keyboard" under the "Halt On" selection. This allows no-keyboard operation
in embedded system applications without the system halting under POST.
Note that the mouse port on the PPC-A84 is a PS/2 mouse port.
* Note: "All, But keyboard" is the default setting.
2.4.3 Mic-in, line-in, speaker out
The PPPC-A84 is equipped with a high quality audio interface, which
provides 16-bit CD quality recording and playback as well as OPL3 compati-
ble FM music. It is supported by all major operating systems and is com-
pletely compatible with Sound Blaster Pro.
The audio interface includes three jacks: microphone in, line out and line in.
(See Fig. 2-4.) Their functions are:
Microphone in: Use an external microphone to record voice and sound.
Line out: Output audio to external devices such as speakers or earphones.
Line in: Input audio from an external CD player or radio.
1. Connect the audio device to the system.
2. Install the driver before you use the device.