
GIGA-BYTE TECHNOLOGY CO., LTD.

GA-6BXA (VER. 1.0)

Device Type   Mainboard
Processor     Pentium II/Celeron
Processor     266/300/333/350/366/400/433/450/466/500/550/600/650MHz
Speed
Chip Set      Intel 440BX
Maximum       768MB (EDO & SDRAM supported)
Onboard
Memory
Cache         0/128/256/512KB (located on the CPU)
BIOS          Award
Dimensions    305mm x 190mm
I/O Options   32-bit PCI slots (5), floppy drive interface, game/MIDI port,
              green PC connector, IDE interfaces (2), parallel port, PS/2
              mouse port, serial ports (2), IR connector, USB connectors
              (2), ATX power connector, AGP slot, line in, line out,
              microphone in, audio in - CD-ROMs (2), SB-link connector,
              wake on LAN connector

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  AGP slot                 AGP         CPU fan power             J2

  ATX power                ATX         Chassis fan power         J9
  connector

  Power fan power           C1         Green PC LED         JP5/pins 1 &
                                                                 12

  Game/MIDI port           CN1         Reset switch        JP5/pins 3 & 4

  Microphone in            CN2         Speaker             JP5/pins 5 - 8

  Line in                  CN3         IDE interface LED    JP5/pins 9 &
                                                                 20

  Line out                 CN4         Green PC connector   JP5/pins 11 &
                                                                 22

  Serial port 1            CN5         Soft off power       JP5/pins 15 &
                                       supply                    16

  Audio in - CD-ROM        CN6         Power LED            JP5/pins 17 -
                                                                 19

  Parallel port            CN7         Audio in - CD-ROM        JP7

  USB connector 1          CN8         STR LED                  JP9

  USB connector 2          CN9         Wake on LAN              JP10
                                       connector

  PS/2 mouse port          CN10        Case open                JP11
                                       connector

  IDE interface 2          CN11        Wake on modem            JP12
                                       connector

  IDE interface 1          CN12        Modem connector          JP20

  Floppy drive             CN13        SB-link connector        JP21
  interface

  Serial port 2            CN14        32-bit PCI slots      PC1 - PC5

  IR connector             IR1

                        USER CONFIGURABLE SETTINGS

                 Function                     Label          Position

      ATX power supply select soft off         J12             Open

      ATX power supply select full on          J12            Closed

     Keyboard power on disabled               JP1           Pins 2 & 3
                                                              closed

      Keyboard power on enabled                JP1           Pins 1 & 2
                                                              closed

     System acceleration select 100MHz        JP4           Pins 2 & 3
                                                              closed

      System acceleration select turbo         JP4           Pins 1 & 2
                                                              closed

     CMOS memory normal operation             JP13          Pins 2 & 3
                                                              closed

      CMOS memory clear                        JP13          Pins 1 & 2
                                                              closed

      Suspend to RAM function enabled          JP14            Open

      Suspend to RAM function disabled         JP14           Closed

      PCI bus CLK select 33MHz                 JP16            Open

      PCI bus CLK select 44MHz                 JP16           Closed

                    DIMM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

      8MB       (1) 1M x 64        None          None

     16MB       (1) 2M x 64        None          None

     16MB       (1) 1M x 64    (1) 1M x 64       None

     24MB       (1) 2M x 64    (1) 1M x 64       None

     32MB       (1) 2M x 64    (1) 1M x 64    (1) 1M x 64

     32MB       (1) 2M x 64    (1) 2M x 64       None

                  DIMM CONFIGURATION (CON'T)

      Size          Bank 0          Bank 1          Bank 2

      40MB        (1) 4M x 64     (1) 1M x 64        None

      40MB        (1) 2M x 64     (1) 2M x 64    (1) 1M x 64

      48MB        (1) 4M x 64     (1) 1M x 64    (1) 1M x 64

      48MB        (1) 4M x 64     (1) 2M x 64        None

      48MB        (1) 2M x 64     (1) 2M x 64    (1) 2M x 64

      56MB        (1) 4M x 64     (1) 2M x 64    (1) 1M x 64

      64MB        (1) 8M x 64        None            None

      64MB        (1) 4M x 64     (1) 2M x 64    (1) 2M x 64

      64MB        (1) 4M x 64     (1) 4M x 64        None

      72MB        (1) 8M x 64     (1) 1M x 64        None

      96MB        (1) 8M x 64     (1) 4M x 64        None

     128MB        (1) 8M x 64     (1) 4M x 64    (1) 4M x 64

     128MB        (1) 8M x 64     (1) 8M x 64        None

     136MB       (1) 16M x 64     (1) 1M x 64        None

     136MB        (1) 8M x 64     (1) 8M x 64    (1) 1M x 64

     144MB       (1) 16M x 64     (1) 1M x 64    (1) 1M x 64

     144MB       (1) 16M x 64     (1) 2M x 64        None

     144MB        (1) 8M x 64     (1) 8M x 64    (1) 2M x 64

     152MB       (1) 16M x 64     (1) 2M x 64    (1) 1M x 64

     160MB       (1) 16M x 64     (1) 2M x 64    (1) 2M x 64

     192MB       (1) 16M x 64     (1) 4M x 64    (1) 4M x 64

     192MB       (1) 16M x 64     (1) 8M x 64        None

     192MB        (1) 8M x 64     (1) 8M x 64    (1) 8M x 64

     200MB       (1) 16M x 64     (1) 8M x 64    (1) 1M x 64

     208MB       (1) 16M x 64     (1) 8M x 64    (1) 2M x 64

     224MB       (1) 16M x 64     (1) 8M x 64    (1) 4M x 64

     256MB       (1) 32M x 64        None            None

     256MB       (1) 16M x 64     (1) 8M x 64    (1) 8M x 64

     264MB       (1) 32M x 64     (1) 1M x 64        None

     272MB       (1) 32M x 64     (1) 1M x 64    (1) 1M x 64

     288MB       (1) 32M x 64     (1) 4M x 64        None

     320MB       (1) 32M x 64     (1) 4M x 64    (1) 4M x 64

     320MB       (1) 32M x 64     (1) 8M x 64        None

     384MB       (1) 16M x 64    (1) 16M x 64    (1) 16M x 64

     512MB       (1) 32M x 64    (1) 16M x 64    (1) 16M x 64

     512MB       (1) 32M x 64    (1) 32M x 64        None

     768MB       (1) 32M x 64    (1) 32M x 64    (1) 32M x 64

  Note: Board accepts EDO & SDRAM memory.

                            CACHE CONFIGURATION

  Note: 256KB/512KB cache is located on the Pentium II CPU. 128KB cache
  is located on the Celeron 300A & 333 CPU.

                       CPU SPEED SELECTION (CELERON)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

  266MHz     66MHz         4x          On       Off       Off       On

  300MHz     66MHz        4.5x         On       Off       Off       On

  333MHz     66MHz         5x          On       Off       Off       On

  366MHz     66MHz        5.5x         On       Off       Off       On

  400MHz     66MHz         6x          On       Off       Off       On

  433MHz     66MHz        6.5x         On       Off       Off       On

                   CPU SPEED SELECTION (CELERON, CON'T)

    CPU       Clock    Multiplier     SW2/1    SW2/2     SW2/3     SW2/4
   speed     speed

  266MHz     66MHz         4x          On        On       Off       On

  300MHz     66MHz        4.5x         Off       On       Off       On

  333MHz     66MHz         5x          On       Off       Off       On

  366MHz     66MHz        5.5x         Off      Off       Off       On

  400MHz     66MHz         6x          On        On       On        Off

  433MHz     66MHz        6.5x         Off       On       On        Off

                     CPU SPEED SELECTION (PENTIUM II)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

  266MHz     66MHz         4x          On       Off       Off       On

  300MHz     66MHz        4.5x         On       Off       Off       On

  333MHz     66MHz         5x          On       Off       Off       On

  366MHz     66MHz        5.5x         On       Off       Off       On

  400MHz     66MHz         6x          On       Off       Off       On

  433MHz     66MHz        6.5x         On       Off       Off       On

  350MHz     100MHz       3.5x         Off      Off       Off       Off

  400MHz     100MHz        4x          Off      Off       Off       Off

  450MHz     100MHz       4.5x         Off      Off       Off       Off

  500MHz     100MHz        5x          Off      Off       Off       Off

  550MHz     100MHz       5.5x         Off      Off       Off       Off

  600MHz     100MHz        6x          Off      Off       Off       Off

  650MHz     100MHz       6.5x         Off      Off       Off       Off

                  CPU SPEED SELECTION (PENTIUM II, CON'T)

    CPU       Clock    Multiplier     SW2/1    SW2/2     SW2/3     SW2/4
   speed     speed

  266MHz     66MHz         4x          On        On       Off       On

  300MHz     66MHz        4.5x         Off       On       Off       On

  333MHz     66MHz         5x          On       Off       Off       On

  366MHz     66MHz        5.5x         Off      Off       Off       On

  400MHz     66MHz         6x          On        On       On        Off

  433MHz     66MHz        6.5x         Off       On       On        Off

  350MHz     100MHz       3.5x         Off      Off       On        On

  400MHz     100MHz        4x          On        On       Off       On

  450MHz     100MHz       4.5x         Off       On       Off       On

  500MHz     100MHz        5x          On       Off       Off       On

  550MHz     100MHz       5.5x         Off      Off       Off       On

  600MHz     100MHz        6x          On        On       On        Off

  650MHz     100MHz       6.5x         Off       On       On        Off

                         ON BOARD SOUND SELECTION

      Setting             JP17              JP18               JP19

      Enabled           Pins 1 & 2        Pins 1 & 2      Pins 1 & 2, 3 &
                         closed            closed            4 closed

     Disabled           Pins 2 & 3        Pins 2 & 3           Open
                         closed            closed

