1-16 Technical Information
MPEG is a compression/decompression standard developed by a professional video group
called the Motion Picture Experts Group. MPEG produces full-screen, 30-frames-per-
second, broadcast-quality digital video. This basically means viewing movies on your
computer.
MGA Millennium accelerates color space conversion and video upscaling to deliver high
quality MPEG and AVI video playback and true multimedia functionality.
AUDIO
To provide for the increasing number of multimedia applications, a Crystal CS4236 audio
CODEC chip is integrated onto the system board. The CS4236 chip provides 16-bit stereo,
Sound Blaster Pro-compatible audio. The system board on multimedia configurations
provides a line in jack, line out jack, speaker jack, microphone jack, and musical instrument
device interface (MIDI) connector for the installation of a MIDI/Joystick kit.
The sound system provides all the digital and analog mixing functions required for playing
and recording audio on personal computers, including stereo analog-to-digital and digital-
to-analog converters, analog mixing, anti-aliasing and reconstruction filters, line and
microphone level inputs, digital audio compression, and full digital control of all mixer and
volume control functions.
The sound system is standard on multimedia configurations and features the following:
16-bit Crystal CS4236 multimedia Codec and Yamaha OPL3 FM synthesizer
digital audio and analog mixing functions, including stereo analog-to-digital and
digital-to-analog converters, analog mixing, anti-aliasing and reconstruction
filters, line and microphone level inputs, digital audio compression, and full digital
control of mixer and volume control functions
Adlib, Sound Blaster Pro 2.0, Windows Sound System, and MPU-401
compatibility
The CS4236 includes a full Plug and Play interface and is comprised of seven logical
devices, including the Synthesizer, Game Port, Sound Blaster, Sound System, MPU-401,
CD-ROM, and the CS4246 device itself. Each logical device is configured into the host
environment using the Plug and Play configuration methodologies. The audio subsystem
requires two DMA channels and one interrupt (see below for defaults).
If CMOS is cleared, the sound board settings stored in the BIOS will not be restored with
the defaults. Use an ISA Configuration Utility (ICU) to restore the sound board settings.
The NECCSD defaults are as follows.
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