Chapter 2. System board features
Audio subsystem
Some PC 300GL models come with an Analog Devices, Inc. integrated audio controller. These models,
which are capable of playing and recording sounds, support DirectX and Microsoft Windows Sound
System applications. SoundBlaster applications are supported in a DOS window only.
The device drivers for the audio controller are on the hard disk drive. The device drivers are also
available on the
Software Selections CD provided with all models.
The following connectors are available on the audio adapter or integrated audio controller:
Line/Headphone out port for connecting powered speakers. Your audio system requires a set of
speakers or headphones connected to the Line/Headphone out port in order to hear audio from the
system. These speakers must be powered with a built-in amplifier. In general, any powered speakers
designed for use with personal computers can be used with your audio system. These speakers are
available with a wide range of features and power outputs.
Line in port for connecting musical devices, such as a portable CD-ROM or stereo system.
Microphone for connecting a microphone.
Super input/output controller
Control of the integrated input/output (I/O) and diskette drive controllers is provided by a single module,
the Super Input/Output Controller. This module supports Plug and Play and controls the following
features:
Diskette drive interface
Serial port
Parallel port
Keyboard and mouse ports
General purpose I/O ports
Diskette drive interface
The following is a list of devices that the diskette drive subsystem supports:
1.44 MB, 3.5 inch diskette drive
1.44 MB, 3.5 inch, 3-mode drive for Japan (no BIOS support for 3-mode drive)
1 Mbps, 500 Kbps, or 250 Kbps internal tape drive
One connector is provided on the system board for diskette drive support. For information on the
connector pin assignments, see “Diskette drive connector” on page 32.
Serial ports
Two universal asynchronous receiver/transmitter (UART) serial port are integrated into the system board.
The serial ports include 16-byte data, first-in first-out (FIFO) buffers and have programmable baud rate
generators. The serial ports are NS16450 and PC16550A compatible.
For information on the connector pin assignments, see “Serial port connector” on page 34.
Note: Current loop interface is not supported.
The following figure shows the serial port assignments in the configuration.
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Technical Information Manual
