NCR 7455, Hardware User'S Manual

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1-12 Chapter 1: Product Overview
Hardware Monitor
The hardware monitor generates an interrupt to the system whenever
any of the internal voltages used by the system processor goes above or
below the acceptable operating range. An interrupt is also generated
when the temperature of the Processor exceeds safe levels. Software
can use this indication to slow or stop the system and/or force a reset.
PCI Expansion Header
A single expansion header is provided to support optional features,
such as the PCMCIA for Wireless LAN Board. This board supports two
Type 2 or one Type 3 PCMCIA-type cards.
IDE Header
Two IDE headers are provided to support the 2.5" hard disk drive and
the optional integrated CD-ROM.
Audio
The base unit has Sound Blaster-compatible audio. Wave table
synthesis is not supported. FM synthesis and MIDI are supported in
the hardware, but require software driver support to function.
A Line Out is provided on a 3.5mm stereo jack that permits connection
of external amplified speakers.
The amplifier connected to Line Out must be used in order to play
Sound Blaster (audio subsystem) audio. However, an internal EUI
speaker provides PC speaker functionality (beeps and tones) for all
configurations.
The volume control can be set during system configuration.