Cmos Rtc; Speaker Connector; Turbo Switch; Turbo Led Connect - TYAN TOMCAT I II Manual

Voltage Regulator
The Default setting will work with most Pentiums CPU's.
The 6x86 will have a marking on it that will identify the
voltage that it requires.
"016" marking on Cyrix chip uses a 3.3V setting.
"028" marking on Cyrix chip uses a 3.48V setting.
J37
J38
J39

3.3 CMOS RTC

CMOS RTC includes an internal battery and Real Time Clock circuit. It
provides the date and the time for the system. Normally the life span of a
RTC internal battery is 10 years. When replacing, you should use the same
model.
3.4 Speaker Connector Installation
S1562 provides a 4-Pin header (J23) to connect the speaker. The polarity
can go either way.

3.5 Turbo Switch

The front panel on your case may have a turbo switch to control system
speed when slower program execution is required for software developed
in the old XT days.
The Intel 430HX chipset doesn't support a de-turbo mode, but the S1562
has a connector (J26) for the cable that may come with the case.
3.6 Turbo LED Connector Installation
The TURBO LED on the front case panel can indicate the current speed
status of the system. The TURBO LED connector should be installed to
J25 in the correct direction.
S1562-001-01
Default
3.3V 3.48V 3.6V
On Off Off
Off Off On
Off On Off
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