
GIGA-BYTE TECHNOLOGY CO., LTD.

GA-6BMM (VER. 1.4)

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
Video Chip    ATI
Set
Maximum       768MB (EDO & SDRAM supported)
Onboard
Memory
Maximum Video Unidentified
Memory
Audio Chip    ATI
Set
Cache         0/128/256/512KB (located on the CPU)
BIOS          Award
Dimensions    245mm x 200mm
I/O Options   32-bit PCI slots (3), floppy drive interface, game/MIDI port,
              green PC connector, IDE interfaces (2), parallel port, PS/2
              mouse port, serial ports (2), VGA port, IR connector, USB
              connectors (2), ATX power connector, AGP slot, line in, line
              out, microphone in, audio in - CD-ROMs (2), wake on LAN
              connector, wake on modem connector

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  AGP slot                 AGP         Floppy drive             CN13
                                       interface

  ATX power                ATX         VGA port                 CN14
  connector

  CPU fan power             C1         Serial port 2            CN15

  Power fan power           C2         IR connector             IR1

  Chassis fan power         C3         Wake on modem            J11
                                       connector

  Game/MIDI port           CN1         Audio in - CD-ROM        JP5

  Microphone in            CN2         Green PC LED         JP6/pins 1 &
                                                                 12

  Line in                  CN3         Reset switch        JP6/pins 3 & 4

  Line out                 CN4         Speaker             JP6/pins 5 - 8

  Serial port 1            CN5         IDE interface LED    JP6/pins 9 &
                                                                 20

  Audio in - CD-ROM        CN6         Green PC connector   JP6/pins 11 &
                                                                 22

  Parallel port            CN7         Soft off power       JP6/pins 15 &
                                       supply                    16

  USB connector 1          CN8         Power LED            JP6/pins 17 -
                                                                 19

  USB connector 2          CN9         Wake on LAN              JP7
                                       connector

  PS/2 mouse port          CN10        STR LED                  JP15

  IDE interface 2          CN11        32-bit PCI slots      PC1 - PC3

  IDE interface 1          CN12

                         USER CONFIGURABLE SETTINGS

                 Function                      Label          Position

     Keyboard power on disabled                JP1          Pins 2 & 3
                                                               closed

      Keyboard power on enabled                 JP1          Pins 1 & 2
                                                               closed

     VGA INT disabled                          JP8          Pins 1 & 2
                                                               closed

      VGA INT enabled                           JP8          Pins 2 & 3
                                                               closed

     On board sound enabled                    JP9          Pins 1 & 2
                                                               closed

      On board sound disabled                   JP9          Pins 2 & 3
                                                               closed

     System acceleration select 100MHz        JP11          Pins 2 & 3
                                                               closed

      System acceleration select turbo         JP11          Pins 1 & 2
                                                               closed

     On board video enabled                   JP12          Pins 2 & 3
                                                               closed

      On board video disabled                  JP12          Pins 1 & 2
                                                               closed

     Suspend to RAM function enabled          JP13             Open

      Suspend to RAM function disabled         JP13            Closed

     CMOS memory normal operation             JP14          Pins 2 & 3
                                                               closed

      CMOS memory clear                        JP14          Pins 1 & 2
                                                               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

                   DIMM CONFIGURATION (CON'T)

      Size          Bank 0          Bank 1          Bank 2

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

      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

     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 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.

                VIDEO MEMORY CONFIGURATION

  Note: The location of the video memory is unidentified.

                       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

