Gigabyte 6EA manual Main Clock JP2 JP3 JP4, Cmos RTC & ISA CFG Cmos Sram

Page 16

Hardware Installation

DIP SWITCH (SW)

FREQ. EXT.CLK. INT.CLK.

 

 

1

2

3

 

4

 

RATIO

MHz

MHz

CPU Type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

OFF

ON

 

ON

3.5

66

233

Pentiumâ II 233 MHz

 

ON

ON

OFF

 

ON

4

66

266

Pentiumâ II 266 MHz

 

OFF

ON

OFF

 

ON

4.5

66

300

Pentiumâ II 300 MHz

 

ON

OFF

OFF

 

ON

5

66

333

Pentiumâ II 333 MHz

 

OFF

OFF

OFF

 

ON

5.5

66

366

Pentiumâ II 366 MHz

 

 

 

 

 

 

 

 

 

 

 

MAIN CLOCK

 

 

JP2

 

JP3

 

JP4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66MHz

 

 

1-2

 

1-2

 

1-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75MHz

 

 

1-2

 

2-3

 

1-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

83MHz

 

 

2-3

 

2-3

 

2-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MThe CPU is a sensitive electric component and it can be easily damaged by static electricity, so users must keep it away from metal surface when the CPU is installed onto main board.

3.6. CMOS RTC & ISA CFG CMOS SRAM

There're RTC & CMOS SRAM on board; they have a power supply from external battery to keep the DATA inviolate & effective. The RTC is a REAL- TIME CLOCK device, which provides the DATE & TIME to system. The CMOS SRAM is used for keeping the information of system configuration, so the system can automatically boot OS every time. Since the lifetime of internal battery is 5 years, the user can change a new Battery to replace old one after it cannot work.

MDanger of explosion if battery is incorrectly replaced.

MReplace only with the same or equivalent type recommended by the manufacturer.

MDispose of used batteries according to the manufacturer’s instructions.

3-6

Image 16
Contents Table of Contents Bios Configuration KEY Features PrefaceWinbench98 Performance ListBlock Diagram Introduce the Pentiumâ II Processor Boxed Pentiumâ II Processor & Heat sink support What is AGP? Specification HardwareSoftware EnvironmentHardware Installation UnpackingQuick Reference for Jumpers & Connectors Mainboard LayoutGND Sense Dram Installation CPU Speed SetupMain Clock JP2 JP3 JP4 Cmos RTC & ISA CFG Cmos SramSpeaker Connector Installation Hardware Reset Switch Connector InstallationPower LED Connector Installation IDE & Atapi Device Installation