Keyboard; Mouse; Multimedia Components; Integrated Audio - NEC PowerMate P2166 Series Service Manual

Technical Information 1-18

KEYBOARD

The PS/2-style 104 key keyboard is standard equipment for the system. The keyboard
provides a numeric keypad, separate cursor control keys, and 12 function keys, capable of
up to 48 functions. Status lamps on the keyboard indicate: Num (Numeric) Lock, Caps
(Capital) Lock, and Scroll Lock key status. The keyboard's six-pin connector plugs into the
rear of the system. The keyboard connector pin assignments are given in Appendix A.

MOUSE

A PS/2-compatible mouse is standard equipment for the system. The mouse has a self-
cleaning mechanism that prevents a buildup of dust or lint around the mouse ball and
tracking mechanism. The mouse's six-pin connector plugs into the rear of the system. The
mouse connector pin assignments are given in Appendix A.

MULTIMEDIA COMPONENTS

Systems configured for multimedia come with audio integrated on the system board, a
CD-ROM reader, a speaker set, and a microphone. The following briefly describes each.
Information on setting up and operating the speakers, microphone, and CD-ROM reader is
in Section 2.

Integrated Audio

Multimedia systems come with audio components integrated on a Creative Labs Vibra 16C
single-chip VLSI mounted on the system board. Non-multimedia systems do not have the
audio components on the system board. The Vicra 16C provides all the digital audio and
analog mixing functions required for recording and playing audio on the computer. The
Vibra 16C integrates FM synthesis and provides Sound Blaster and Roland MPU-401
UART mode compatibility.
The integrated components also provide MPCII, Ad Lib™, and Multimedia PC Level 2
compliance for PC sound applications. The components work with the pre-installed audio
®
software (Voyetra ) and accomodate a variety of I/O addresses, DMA channels, and
interrupts (see Table 1-5 for interrupt assignments and Table 1-6 for the system I/O address
map).
The audio subsystem requires up to two DMA channels to support full duplex operation
and one interrupt.