
VEXTREC TECHNOLOGY, INC.

GMB-P56IPS (VER. 1.06)

Processor            CX 6X86/AM K5/Pentium/Pentium MMX
Processor Speed      75/90/100/120/133/150/166/200MHz
Chip Set             Intel 430VX
Maximum Onboard      128MB (EDO supported)
Memory
Cache                256/512KB
BIOS                 AMI/Award
Dimensions           270mm x 220mm
I/O Options          32-bit PCI slots (4), floppy drive interface, green PC
                     connector, IDE interfaces (2), parallel port, PS/2
                     mouse interface, serial ports (2), cache slot, IR
                     connector, USB connectors (2)

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Reset switch                J1       Parallel port              J13

  Green PC connector          J2       Serial port 2              J14

  Green PC LED                J3       Serial port 1              J15

  Speaker                     J4       USB connector 1            J16

  IDE interface LED           J5       USB connector 2            J17

  Power LED & keylock         J6       PS/2 mouse interface       J18

  IDE interface 1             J9       PS/2 mouse port            J20

  IDE interface 2            J10       Cache slot                 SL1

  Floppy drive interface     J11       32-bit PCI slots         PC1 - PC4

  IR connector               J12

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      Flash BIOS voltage select 12v           JP4           Pins 1 & 2
                                                              closed

      Flash BIOS voltage select 5v            JP4           Pins 2 & 3
                                                              closed

     CMOS memory normal operation            JP5              Open

      CMOS memory clear                       JP5             Closed

                  DIMM/DRAM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

      8MB           None           None       (1) 1M x 64

      8MB       (2) 1M x 32        None          None

     16MB       (2) 1M x 32    (2) 1M x 32       None

     16MB       (2) 2M x 32        None          None

     16MB           None           None       (1) 2M x 64

     24MB       (2) 2M x 32    (2) 1M x 32       None

     24MB           None       (2) 1M x 32    (1) 2M x 64

     32MB           None       (2) 4M x 32       None

     32MB           None           None       (1) 4M x 64

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

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

     40MB       (2) 4M x 32    (2) 1M x 32       None

     40MB           None       (2) 1M x 32    (1) 4M x 64

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

     48MB       (2) 2M x 32    (2) 4M x 32       None

     48MB           None       (2) 2M x 32    (1) 4M x 64

     48MB           None       (2) 4M x 32    (1) 2M x 64

     64MB       (2) 8M x 32        None          None

     64MB           None           None       (1) 8M x 64

     64MB           None       (2) 4M x 32    (1) 4M x 64

     72MB       (2) 8M x 32    (2) 1M x 32       None

     72MB           None       (2) 1M x 32    (1) 8M x 64

     72MB           None       (2) 8M x 32    (1) 1M x 64

                   DIMM/DRAM CONFIGURATION (CONT)

      Size             Bank 0           Bank 1           Bank 2

      80MB          (2) 8M x 32      (2) 2M x 32          None

      80MB              None         (2) 8M x 32       (1) 2M x 64

      80MB              None         (2) 2M x 32       (1) 8M x 64

      96MB          (2) 8M x 32      (2) 4M x 32          None

      96MB              None         (2) 8M x 32       (1) 4M x 64

      96MB              None         (2) 4M x 32       (1) 8M x 64

      128MB         (2) 4M x 32      (2) 4M x 32          None

  Note: Board accepts EDO memory. Banks 0 & 1 are interchangeable.

                  DRAM VOLTAGE CONFIGURATION

       Voltage                S7                   S8

        3.3v           Pins 2 & 3 closed   Pins 2 & 3 closed

         5v            Pins 1 & 2 closed   Pins 1 & 2 closed

                            CACHE CONFIGURATION

      Size          Bank 0              SL1                   TAG

     256KB        (2) 32K x 32     Not installed      (1) 8K/16K/32K x 8

     512KB        (2) 32K x 32      256KB module      (1) 8K/16K/32K x 8
                                     installed

                        CPU SPEED SELECTION (CYRIX)

    CPU     Clock    Multiplier    JP6   JP7     S1       S2        S3
  speed     speed

  120MHz    50MHz        2x        1 &   2 &    Closed   Closed    Open
                                   2      3

  133MHz    55MHz        2x        1 &   2 &    Open     Closed    Open
                                   2      3

  150MHz    60MHz        2x        1 &   2 &    Closed   Open      Open
                                   2      3

  166MHz    66MHz        2x        1 &   2 &    Open     Open      Open
                                   2      3

  200MHz    66MHz        3x        2 &   1 &    Open     Open     Closed
                                   3      2

  Note: Pins designated should be in the closed position.

                         CPU SPEED SELECTION (AMD)

    CPU      Clock   Multiplier     JP6   JP7     S1        S2       S3
  speed     speed

  75MHz     50MHz       1.5x        1 &   1 &    Closed    Closed   Open
                                    2      2

  90MHz     60MHz       1.5x        1 &   1 &    Closed    Open     Open
                                    2      2

  100MHz    66MHz       1.5x        1 &   1 &    Open      Open     Open
                                    2      2

  120MHz    60MHz       1.5x        1 &   1 &    Closed    Open     Open
                                    2      2

  133MHz    66MHz       1.5x        1 &   1 &    Open      Open     Open
                                    2      2

  150MHz    66MHz       1.5x        1 &   1 &    Open      Open     Open
                                    2      2

  166MHz    66MHz       2.5x        2 &   2 &    Open      Open     Open
                                    3      3

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

    CPU      Clock   Multiplier     JP6   JP7     S1        S2       S3
  speed     speed

  75MHz     50MHz       1.5x        1 &   1 &    Closed    Closed   Open
                                    2      2

  90MHz     60MHz       1.5x        1 &   1 &    Closed    Open     Open
                                    2      2

  100MHz    66MHz       1.5x        1 &   1 &    Open      Open     Open
                                    2      2

  120MHz    60MHz        2x         1 &   2 &    Closed    Open     Open
                                    2      3

  133MHz    66MHz        2x         1 &   2 &    Open      Open     Open
                                    2      3

  150MHz    60MHz       2.5x        2 &   2 &    Closed    Open     Open
                                    3      3

  166MHz    66MHz       2.5x        2 &   2 &    Open      Open     Open
                                    3      3

  200MHz    66MHz        3x         2 &   1 &    Open      Open     Open
                                    3      2

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (INTEL MMX)

    CPU      Clock     Multiplier    JP6    JP7     S1      S2       S3
  speed      speed

  166MHz     66MHz        2.5x        2 &    2 &   Open    Open     Open
                                      3      3

  200MHz     66MHz         3x         2 &    1 &   Open    Open     Open
                                      3      2

  Note: Pins designated should be in the closed position.

            CPU VOLTAGE SELECTION (SINGLE)

  Voltage      JP1         S4        S5         S6

    3.4v      Closed     Closed    Closed     Closed

    3.5v       Open      Closed    Closed     Closed

                 CPU VOLTAGE SELECTION (DUAL)

  Voltage    V core      JP1        S4         S5        S6

   3.4v       2.8v     Closed      Open       Open      Open

