Gigabyte 6BX User manual

R-02-01-080508
6BX
USER'S MANUAL
1. System power on by PS/2 Mouse: First, enable this function in
CMOS Setup, then you can power on the system by double
clicking the right or left button of your PS/2 Mouse.
2. System power on by Keyboard: If your ATX power supply
supports larger than 720 mA 5V Stand-By current, you can
power on your system by entering password from the
keyboard after setting the “Keyboard power on” password in
CMOS Setup.
3. Supports 3 steps ACPI LED.
4. Modem Ring-On. (COM B)
5. Wake-Up on LAN. (on JP7) (The ATX power supply supports
larger than 600 mA)
6. Supports LDCM®
Pentium

II Processor MAINBOARD
REV. 2.0 First Edition

6BX
1
The author assumes no responsibility for any errors or omissions that may
appear in this document nor does it make a commitment to update the
information contained herein.
Third-party brands and names are the property of their respective owners.
Sound Blaster is a registered trademark of Creative Technology Ltd in the
United States and certain other countries. Sound Blaster-LINK and
SB-LINK are trademarks of Creative Technology Ltd.
May 08, 1998 Taipei, Taiwan

Quick Installation Guide
2
I. Quick Installation Guide :
CPU SPEED SETUP
The system bus speed is selectable between 66.6MHz and 100 MHz. The
user can select the system bus speed (JP6) and change the DIP SWITCH
(SW) selection to set up the CPU speed for 200 - 633MHz processor.
The CPU speed MUST match with the frequency RATIO. It will cause
system hanging up if the frequency RATIO is higher than that of CPU.
CLK RATIO SW 1 SW 2 SW 3 SW 4
X3 ON OFF ON ON
X3.5 OFF OFF ON ON
X4 ON ON OFF ON
X4.5 OFF ON OFF ON
X5 ON OFF OFF ON
X5.5 OFF OFF OFF ON
JP6
1-2 CLOSE : System Speed is set to 66 MHz
2-3 CLOSE : Set system speed to Auto −
−−
−auto detect system
speed (66 / 100MHz FSB)
1-2-3 OPEN : System Speed is set to 100MHz

6BX
3
I. Set system speed to 66MHz: JP6 pin 1-2 short will cause
system always run at 66 MHz FSB (Front Side Bus).
II. Set system speed to 100MHz: JP6 pin 1-2-3 open will cause
system always run at 100MHz FSB.
III. Set system speed to Auto: auto detect system speed
(66/100MHz FSB)
There are two ways to set system speed
1. 66MHz (JP6) (1-2 short) or Auto detect (2-3 short)
2. 100MHz (JP6) (1-2-3 open) or Auto detect (2-3 short)
1. PentiumII 300 / 100MHz FSB
JP6
CPU
Intel
440BX
PIIX4
6BX
1
1 2 3 JP6
ON
4321OFF
SW 1 2 3 JP6
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3

Quick Installation Guide
4
2. PentiumII 350 / 100MHz FSB
3. PentiumII 400 / 100MHz FSB
4. PentiumII 450 / 100MHz FSB
5. PentiumII 500 / 100MHz
6. PentiumII 550 / 100MHz
7. PentiumII 233 MHz / 66MHz FSB
SW ON
4 3 2 1 OFF
SW 4 3 2 1
ON
OFF
SW ON
4 3 2 1 OFF
SW ON
4 3 2 1 OFF
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
SW ON
4 3 2 1 OFF
SW ON
4 3 2 1 OFF
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3

6BX
5
8. PentiumII 266 MHz / 66MHz FSB
9. PentiumII 300 MHz / 66MHz FSB
10. PentiumII 333 MHz / 66MHz FSB
11. PentiumII 366 / 66MHz
II. Jumper setting :
SPK : Speaker Connector
1
CPU
Intel
440BX
PIIX4
6BX
Pin No. Function
1
2
VCC
NC
3NC
4Data
1
SW ON
4 3 2 1 OFF
SW ON
4 3 2 1 OFF
SW ON
4 3 2 1 OFF
SW ON
4 3 2 1 OFF
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3
JP6 1 2 3

Quick Installation Guide
6
RST : Reset Switch
CPU
Intel
440BX
PIIX4
6BX
Open:
Normal
operation
Short:
For Hardware
Reset System
PW LED : Power LED Connector
CPU
Intel
440BX
PIIX4
6BX
1
1
Pin No. Function
1
2LED anode
(
+
)
LED cathode (-)3LED cathode (-)
Pin No. Function
1
2LED anode
(
+
)
LED cathode (-)3NC

6BX
7
HD : IDE Hard Disk Active LED
CPU
Intel
440BX
PIIX4
6BX
11
Pin
No. Function
1
2
LED
anode (+)
LED
cathode (-)
3
LED
cathode (-)
4LED
anode (+)
Pin
No. Function
1
2
LED
anode (+)
LED
cathode (-)
IR : Infrared Connector (Optional)
CPU
Intel
440BX
PIIX4
6BX
1
Pin
No.
1
2
3
4
5
IR Data
Output
GND
IR Data
In
p
ut
NC
POWER (+)
Function

Quick Installation Guide
8
GN : Green Function Switch
CPU
Intel
440BX
PIIX4
6BX
Open:
Normal
operation
Short:
Entering
Green Mode.
GD : Green LED
CPU
Intel
440BX
PIIX4
6BX
1
PIN1:LED
Anode (+)
PIN2:LED
Cathode(-)