GIGA-BYTE TECHNOLOGY CO., LTD.

GA-6BXU (REV. 1.0)

Device Type Mainboard
Processor Pentium II
Processor Speed 233/266/300/333/350/366/400/450/500MHz
Chip Set Intel 440BX
Maximum Onboard Memory 1GB (SDRAM supported)
Maximum Video Memory 1MB
Cache 256/512KB (located on Pentium II CPU)
BIOS Award
Dimensions 305mm x 210mm
I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), SCSI interface, Ultra SCSI interface, Ultra II SCSI interface, parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, AGP slot, SB-link connector, wake on LAN connector

CONNECTIONS

Purpose

Location

Purpose

Location

AGP slot

AGP

Ultra II SCSI interface

CN11

ATX power connector

ATX

Ultra SCSI interface

CN12

Chassis fan power

C1

SCSI interface

CN13

Power fan power

C2

IR connector

IR1

CPU fan power

C3

Case open connector

J14

Parallel port

CN1

SB-link connector

JP7

Serial port 1

CN2

Wake on LAN connector

JP8

Serial port 2

CN3

Green PC LED

JP10/pins 1 & 2

USB connector 1

CN4

Reset switch

JP10/pins 3 & 4

USB connector 2

CN5

Speaker

JP10/pins 5 - 8

PS/2 mouse port

CN6

IDE interface LED

JP10/pins 9 & 20

IDE interface 2

CN7

Green PC connector

JP10/pins 11 & 22

IDE interface 1

CN8

Soft off power supply

JP10/pins 15 & 16

Floppy drive interface

CN9

Power LED

JP10/pins 17 - 19

Ultra II SCSI interface

CN10

32-bit PCI slots

PC1 - PC4


USER CONFIGURABLE SETTINGS

Function

Label

Position

  ATX power supply select soft off

J13

Open

  ATX power supply select soft full on

J13

Closed

»

Keyboard power on disabled

JP1

Pins 2 & 3 closed

  Keyboard power on enabled

JP1

Pins 1 & 2 closed

»

Factory configured - do not alter

JP4

Unidentified


DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

8MB

(1) 1M x 64

None

None

None

16MB

(1) 2M x 64

None

None

None

16MB

(1) 1M x 64

(1) 1M x 64

None

None

24MB

(1) 2M x 64

(1) 1M x 64

None

None

24MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

None

32MB

(1) 4M x 64

None

None

None

32MB

(1) 2M x 64

(1) 2M x 64

None

None

32MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

40MB

(1) 4M x 64

(1) 1M x 64

None

None

48MB

(1) 4M x 64

(1) 2M x 64

None

None

48MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

None

64MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

64MB

(1) 8M x 64

None

None

None

64MB

(1) 4M x 64

(1) 4M x 64

None

None

72MB

(1) 8M x 64

(1) 1M x 64

None

None

80MB

(1) 8M x 64

(1) 2M x 64

None

None


DIMM CONFIGURATION (CON'T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

96MB

(1) 8M x 64

(1) 4M x 64

None

None

96MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

None

128MB

(1) 16M x 64

None

None

None

128MB

(1) 8M x 64

(1) 8M x 64

None

None

128MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

136MB

(1) 16M x 64

(1) 1M x 64

None

None

144MB

(1) 16M x 64

(1) 2M x 64

None

None

176MB

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

192MB

(1) 16M x 64

(1) 8M x 64

None

None

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

None

256MB

(1) 32M x 64

None

None

None

256MB

(1) 16M x 64

(1) 16M x 64

None

None

256MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

272MB

(1) 16M x 64

(1) 16M x 64

(1) 1M x 64

(1) 1M x 64

280MB

(1) 32M x 64

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

288MB

(1) 16M x 64

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

320MB

(1) 16M x 64

(1) 16M x 64

(1) 4M x 64

(1) 4M x 64

384MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

None

448MB

(1) 32M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

512MB

(1) 32M x 64

(1) 32M x 64

None

None

512MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

640MB

(1) 32M x 64

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

768MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

None

1024MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

Note: Board accepts SDRAM memory.


CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium II CPU.


CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

200MHz

66MHz

3x

On

Off

On

On

233MHz

66MHz

3.5x

Off

Off

On

On

266MHz

66MHz

4x

On

On

Off

On

300MHz

66MHz

4.5x

Off

On

On

On

333MHz

66MHz

5x

On

Off

Off

On

366MHz

66MHz

5.5x

Off

Off

Off

On

350MHz

100MHz

3.5x

On

Off

On

On

400MHz

100MHz

4x

Off

On

Off

On

450MHz

100MHz

4.5x

On

On

Off

On

500MHz

100MHz

5x

Off

Off

Off

On

550MHz

100MHz

5.5x

On

Off

Off

On


CPU OVER CLOCK SELECTION

Speed

JP6

66MHz

Pins 1 & 2 closed

100MHz

Open

Auto select

Pins 2 & 3 closed