Gigabyte 6BXC User manual

R-19-01-081126
6BXC
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 100~300 mA 5V Stand-By current
(dependent on the specification of keyboards), 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 A , B).
5. Wake-Up on LAN. (on JP7) (The ATX power supply supports
larger than 720 mA 5V Stand-By current)
* System/Power Fan, Clear CMOS, Internal Ring Pwr on and
Power connector function only for PCB Rev:1.9 use, please
reference page 10, 16~18.
For Intel Pentium

II / CeleronTM Processor MAINBOARD
REV. 1.9 First Edition

6BXC
1
The author assumes no responsibility for any errors or omissions which 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.
November 26, 1998 Taipei, Taiwan
I. Quick Installation Guide :

Quick Installation Guide
2
CPU SPEED SETUP
The system bus speed is selectable between 66 / 100 MHz. The user can select
the system bus speed (SW1) and change the DIP SWITCH (SW2) selection to
set up the CPU speed for 233 - 633MHz processor.
Set System Bus Speed
SW1:
CPU AGP 1 23 4
100 MHz
66 MHz OFF OFF OFF OFF
133 MHz
89 MHz OFF OFF ON OFF
112 MHz
75 MHz OFF ON OFF OFF
66 MHz 66 MHz ON OFF OFF ON
75 MHz 75 MHz ON ON OFF ON
83 MHz 83 MHz ON OFF ON ON
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.
SW2:
CLK RATIO 1 23 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
X6 ON ON ON OFF
X6.5 OFF ON ON OFF
« Note: We don’t recommend you to setup your system speed to 75, 83,
112 or 133MHz because these frequencies are not the standard
specifications for CPU, Chipset and most of the peripherals.
Whether your system can run under 75, 83, 112 or 133MHz
properly will depend on your hardware configurations: CPU,
SDRAM, Cards, etc.

6BXC
3
1. PentiumII /Celeron 233 / 66 MHz FSB
CPU
Intel
440BX
PIIX4
6BXC
ON
OFF
SW 2
1234
ON
OFF
SW 1
1234
2. PentiumII /Celeron 266 / 66 MHz FSB
3. PentiumII /Celeron 300/Celeron 300A / 66 MHz FSB
4. PentiumII /Celeron 333 / 66 MHz FSB
SW2 ON
4 3 2 1 OFF
SW1 ON
4 3 2 1 OFF
SW2 ON
4 3 2 1
OFF
SW1 ON
4 3 2 1
OFF
SW2 ON
4 3 2 1 OFF
SW1 ON
4 3 2 1 OFF

Quick Installation Guide
4
5. PentiumII /Celeron 366 / 66MHz FSB
6. PentiumII /Celeron 400 / 66MHz FSB
7. PentiumII /Celeron 433 / 66MHz FSB
8. PentiumII 350 / 100 MHz FSB
9. PentiumII 400 / 100 MHz FSB
10. PentiumII 450 / 100 MHz FSB
SW2 ON
4 3 2 1
OFF
SW1 ON
4 3 2 1
OFF
SW2 ON
4 3 2 1 OFF
SW1 ON
4 3 2 1 OFF
SW2 ON
4 3 2 1 OFF
SW1 ON
4 3 2 1 OFF
SW2 ON
4 3 2 1
OFF
SW1 ON
4 3 2 1
OFF
SW2 ON
4 3 2 1
OFF
SW2 ON
4 3 2 1
OFF
SW1 ON
4 3 2 1 OFF
SW1 ON
4 3 2 1
OFF

6BXC
5
11. PentiumII 500 / 100 MHz FSB
12. PentiumII 550 / 100 MHz FSB
13. PentiumII 600 / 100 MHz FSB
14. PentiumII 650 / 100 MHz FSB
SW2 ON
4 3 2 1
OFF
SW1 ON
4 3 2 1
OFF
SW2 ON
4 3 2 1
OFF
SW1 ON
4 3 2 1
OFF
SW2 ON
4 3 2 1 OFF
SW2 ON
4 3 2 1 OFF
SW1 ON
4 3 2 1
OFF
SW1 ON
4 3 2 1 OFF

Quick Installation Guide
6
II. Jumper setting :
SPK : Speaker Connector
1
CPU
Intel
440BX
PIIX4
6BXC
1
Pin No. Function
1
2
VCC
NC
3NC
4Data
++
RST : Reset Switch
CPU
Intel
440BX
PIIX4
6BXC
Open:
Normal
operation
Short:
For Hardware
Reset System

6BXC
7
PW LED : Power LED Connector
CPU
Intel
440BX
PIIX4
6BXC
11
Pin
No.
Function
1
2
LED
anode (+)
LED
cathode (-)
3LED
cathode (-)
HD : IDE Hard Disk Active LED
CPU
Intel
440BX
PIIX4
6BXC
1
1
Pin
No.
Function
1
2
LED
anode (+)
LED
cathode (-)
3
LED
cathode (-)
4LED
anode (+)
Pin
No.
Function
1
2
LED
anode (+)
LED
cathode (-)

Quick Installation Guide
8
IR : Infrared Connector (Optional)
CPU
Intel
440BX
PIIX4
6BXC
1
Pin
No.
1
2
3
4
5
IR Data
Output
GND
IR Data
Input
NC
POWER (+)
Function
GN : Green Function Switch
CPU
Intel
440BX
PIIX4
6BXC
Open:
Normal
operation
Short:
Entering
Green Mode.

6BXC
9
GD : Green LED
CPU
Intel
440BX
PIIX4
6BXC
1
1
PIN1:LED
Anode (+)
PIN2:LED
Cathode(-)
Soft POWER : Soft Power Connector
1
CPU
Intel
440BX
PIIX4
6BXC
Open:
Normal
operation
Short:
Power On/Off
1

Quick Installation Guide
10
POWER1 : Power Connector (Only for PCB Rev:1.9 use)
CPU
Intel
440BX
PIIX4
6BXC
1
11
Pin
No. Function
4,6,19,20
GND
10
12
18
8
+12V
-12V
-5V
9
14
PS-ON
(Soft
ON/OFF)
5V SB
(Stand
by +5V)
3,5,7
13,15-17
Power
Good
VCC
+5V
PS/2 Mouse / Keyboard Connector
CPU
Intel
440BX
PIIX4
6BXC
PS/2
MOUSE
PS/2
KEYBOARD
Pin No.
Function
2
4
1
3
5
6
Data
NC
VCC(+5)
GND
NC
Clock
PS/2 Mouse
PS/2 Keyboard

6BXC
11
CPU FAN : CPU Cooling Fan Power Connector
CPU
Intel
440BX
PIIX4
6BXC
Pin No. Function
1
2
3
GND
+12V
SENSE
1
IDE1: For Primary IDE port
CPU
Intel
440BX
PIIX4
6BXC
1
RED LINE

Quick Installation Guide
12
IDE2: For Secondary IDE port
CPU
Intel
440BX
PIIX4
6BXC
1
RED LINE
FLOPPY : FLOPPY PORT
CPU
Intel
440BX
PIIX4
6BXC
1
RED LINE

6BXC
13
LPT PORT / COM A / COM B
CPU
Intel
440BX
PIIX4
6BXC
COM B
LPT PORT
COM A
JP1: Keyboard Power On Selection
CPU
Intel
440BX
PIIX4
6BXC
Keyboard Power On
Default: Disable
1-2
2-3 Enable Disable
1 2 3
JP1

Quick Installation Guide
14
USB : USB Port
CPU
Intel
440BX
PIIX4
6BXC
Pin No. Function
1
2
3
4
5
6
7
8
USB D0-
USB D0+
GND
USB V0
GND
USB V1
USB D1-
USB D1+
J15: System After AC Back
CPU
Intel
440BX
PIIX4
6BXC
OPEN:
Soft Off
CLOSE:
Full On
J15
J15
Pin
No. Function
1
2GND
Signal
1

6BXC
15
JP7: Wake On LAN
CPU
Intel
440BX
PIIX4
6BXC
JP7
JP7
1
Pin
No
.
1
2
3
Function
+5V SB
GND
Signal
JP8:SB-LINK Creative PCI Sound Card Support
CPU
Intel
440BX
PIIX4
6BXC
JP8
JP8
1
2
4
5
6
SB-LINK
Pin
No
1
2
3
Function
Signal
GND
NC
4
5Signal
GND
Signal
6

Quick Installation Guide
16
JP10 : System Acceleration
CPU
Intel
440BX
PIIX4
6BXC
BAT1
11-2 Turbo
2-3 100MHz Normal
Default:2-3 100MHz Normal
1-2 Turbo:
For 100MHz Turbo and other
frequencies
2-3 100MHz Normal:
For 100MHz Normal
Power FAN : Power Fan Power Connector
(Only For PCB Rev:1.9 use)
CPU
Intel
440BX
PIIX4
6BXC
Pin No. Function
1
2
3
GND
+12V
SENSE
1

6BXC
17
System FAN : System Fan Power Connector
(Only For PCB Rev:1.9 use)
CPU
Intel
440BX
PIIX4
6BXC
Pin No. Function
1
2
3
GND
+12V
SENSE
1
JP11:CLEAR CMOS FUNCTION (Only For PCB Rev:1.9 use)
CPU
Intel
440BX
PIIX4
6BXC
BAT1
11-2 Short :Clear CMOS
2-3 Short :Normal
Default: 2-3 Short

Quick Installation Guide
18
Internal Ring Power On FUNCTION
(Only For PCB Rev:1.9 use)
CPU
Intel
440BX
PIIX4
6BXC
BAT1
1
Pin No. Function
1
2
+5V SB
GND
BAT1 :BATTERY
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used batteries according to the manufacturer’s instructions.
CPU
Intel
440BX
PIIX4
6BXC
BAT1