Two Host Interface Channels Support; Keyboard And Mouse Interface Transfer Port; Power Management Interface Transfer Port; Supports Three Independent Devices - Toshiba Satellite 1700 Series Maintenance Manual

3.16 Two host interface channels support

3.16 Two host interface channels support

3.16.1 Keyboard and mouse interface transfer port

One channel is dedicated for the keyboard and mouse data transfer (host address 60h
and 64h). The Keyboard and Mouse channel are compatible to the legacy 8042-host
interface. It is based on two registers: Command/Data and Status.
The KB-BIOS interrupt generates IRQ1 (Keyboard) and IRQ12 (Mouse) for the
system.

3.16.2 Power management interface transfer port

Power management function (host address 62h and 66h). The Power Management
channel of KBC structure and operation are similar to those of the Keyboard/Mouse
channel.

3.16.3 Supports three independent devices

The KBC provides three data transfer channels. Each channel has two quasi-BI-
directional signals that are used for the direct interface to an external keyboard,
mouse or any other PS/2 compatible pointing device.
The three channels are identical and thus allow the connector ports to be
interchangeable.
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3 Tests and Diagnostics
Satellite 1700 Series Maintenance Manual