Soyo SY-K7ADA V1.0 User Manual

Motherboard Description

SY-K7ADA V1.0

Legacy-Free and Legacy Reduction specification of PC2001.

1-7.1 PS/2 Keyboard and Mouse Interface

PS/2 keyboard and mouse connectors are located on the back panel of the
motherboard. The +5 V lines to keyboard and mouse connectors are
protected with a fuse that prevents motherboard components from being
damaged when an over-current condition occurs.

Note

The mouse and keyboard can be plugged into either PS/2 connector.
Power to the computer should be turned off before a keyboard or mouse is
connected or disconnected.

The keyboard controller contains code, which provides the traditional
keyboard and mouse control functions, and also supports Power On/Reset
password protection. Power On/Reset password can be specified in the
BIOS Setup program.

The keyboard controller also supports the hot-key sequence
<Ctrl><Alt><Del>, software reset. This key sequence resets the
computer’s software by jumping to the beginning of the BIOS code and
running the Power On Self Test (POST).

1-8 HARDWARE MONITOR

The hardware monitor subsystem provides instrumentation capabilities.
The features of the hardware monitor subsystem include:

  2 thermistor input for remote temperature sensing (CPU/System)
  Monitor 4 positive voltages (Vcore/+3.3V/+5V/+12V)
  Monitor 2 fan speeds
  2 PWM outputs for fan speed control
  Power-on beep warning when CPU core voltage is out of range
  VID4-VID0 monitoring inputs
  Windows 95/98 utility included