Hardware Reset Switch Connector Installation; Ensoniq Audio Connectors; External Smi; Chassis Intrusion Alarm Connector - TYAN TOMAHAWK BX Manual

Chapter 2
Board Installation

Hardware Reset Switch Connector Installation

The Reset switch on your case's display panel provides you with the Hard-
ware Reset function, which is the same as power on/off. The system will do a
cold start after the Reset button is pushed.
Creative Labs Audio Connectors (S1856SLA only)
There are four black 4-pin connectors onboard which are used for various
peripherals' audio signals. The digital signal that comes in through these
connectors is directed through the Creative Labs ES1373 PCI sound chip, and
the digital signal is turned into an audio signal which goes out through the
speaker. The TDA connector (J10) is for modem audio; the MPEG connector
(J9) is for DVD and TV cards; the VIDEO connector is (J11); the CD connector
(J13) is for CD-ROMs.

External SMI

The EXTSMI (External System Management Interface) connector, jumper JP16,
is used by some plug-in cards. Certain applications associated with these plug-
in cards use the interface for hardware control and queries.

Chassis Intrusion Alarm Connector

The J7 connector is an intrusion alarm, that can be connected to the system
! ! ! ! !
chassis. When active (J7 is connected to the chassis), this alarm will alert the
system administrator anytime someone opens the system's case.
important!

CMOS RTC

The Real Time Clock (RTC) circuit, which provides the date and time for the
system is integrated into the 440BX or Via Apollo Pro Plus AGPset. If the
external battery for the RTC is low, it will prevent your system from POSTing,
and you will not get a display. Normally the life span of an external battery is 2
years. If yours is running low, you will need to replace it with a new 3V lithium
battery (Sony CR2032).

Flash EEPROM

The Tomahawk BX/A+ uses flash memory to store BIOS firmware. It can be
updated as new versions of the BIOS become available. You can upgrade your
BIOS easily using the flash utility (see page 59).
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