
BEK-TRONIC TECHNOLOGY, INC.

BEK-5731

Processor         Pentium
Processor Speed   75/90/100/120/125/133/150/166/180/200MHz
Chip Set          Intel
Video Chip Set    None
Maximum Onboard   128MB (EDO supported)
Memory
Maximum Video     None
Memory
Cache             256/512KB
BIOS              Award
Dimensions        280mm x 220mm
I/O Options       32-bit PCI slots (4), green PC connector, floppy drive
                  interface, IDE interfaces (2), parallel port, PS/2 mouse
                  interface, serial ports (2), cache slot, IR connector,
                  USB connectors (2)
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  PS/2 mouse interface        J1       IR connector                J9

  Serial port 1               J2       Reset switch               J10

  Parallel port               J3       Power LED & keylock        J11

  Floppy drive interface      J4       Speaker                    J12

  IDE interface 1             J5       USB connector 2            JP3

  IDE interface 2             J6       USB connector 1            JP4

  Serial port 2               J7       Green PC connector         JP22

  IDE interface LED           J8       32-bit PCI slots         PC1  PC4

  Turbo LED                  J8A       Cache slot                 SL1

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

      On board I/O enabled                  JP1        Pins 1 & 2 closed

      On board I/O disabled                 JP1        Pins 2 & 3 closed

     Factory configured - do not           JP2          Unidentified
      alter

     Factory configured - do not           JP8          Unidentified
      alter

     Factory configured - do not          JP8A          Unidentified
      alter

     Pipeline address enabled             JP13             Closed

      Pipeline address disabled            JP13              Open

     Factory configured - do not          JP16          Unidentified
      alter

     Cache write select write back        JP17        Pins 2 & 3 closed

      Cache write select write             JP17        Pins 1 & 2 closed
      through

      Flash BIOS voltage select 12v        JP18        Pins 1 & 2 closed

      Flash BIOS voltage select 5v         JP18        Pins 2 & 3 closed

     Factory configured - do not          JP25          Unidentified
      alter

      CPU regulator voltage select 1       JP28        Pins 1 & 2 closed
      regulator voltage

      CPU regulator voltage select 2       JP28        Pins 2 & 3 closed
      regulator voltage

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      8MB        (2) 1M x 36      None

     16MB        (2) 2M x 36      None

     16MB        (2) 1M x 36   (2) 1M x 36

     24MB        (2) 2M x 36   (2) 1M x 36

     32MB        (2) 4M x 36      None

     32MB        (2) 2M x 36   (2) 2M x 36

     48MB        (2) 4M x 36   (2) 2M x 36

     64MB        (2) 8M x 36      None

     64MB        (2) 4M x 36   (2) 4M x 36

     96MB        (2) 8M x 36   (2) 4M x 36

     128MB       (2) 8M x 36   (2) 8M x 36

      DIMM CONFIGURATION

     Size          Bank 2

      8MB       (1) 1M x 64

     16MB       (1) 2M x 64

     32MB       (1) 4M x 64

     64MB       (1) 8M x 64

                            CACHE CONFIGURATION

       Size            Bank 0               SL1                 TAG

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

    256KB (B)           None            256KB module        (1) 32K x 8
                                         installed

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

    512KB (B)       (2) 64K x 32       Not installed        (1) 32K x 8

    512KB (C)           None            512KB module        (1) 32K x 8
                                         installed

                        CACHE JUMPER CONFIGURATION

     Size          JP10            JP12           JP14           JP15

  256KB (A)      Pins 2 & 3     Pins 2 & 3        Open          Closed
                  closed          closed

  256KB (B)      Pins 2 & 3     Pins 2 & 3        Open           Open
                  closed          closed

  512KB (A)      Pins 1 & 2     Pins 1 & 2       Closed          Open
                  closed          closed

  512KB (B)      Pins 1 & 2     Pins 1 & 2       Closed          Open
                  closed          closed

  512KB (C)      Pins 2 & 3     Pins 2 & 3        Open          Closed
                  closed          closed

     CACHE TAG VOLTAGE CONFIGURATION

       Voltage               JP9

        3.3v          Pins 2 & 3 closed

         5v           Pins 1 & 2 closed

                            CPU SPEED SELECTION

   CPU     Clock   Multiplier    JP5      JP6      JP7     JP26     JP27
  speed    speed

  75MHz    50MHz      1.5x       Open    Closed   Closed   Open     Open

  90MHz    60MHz      1.5x      Closed    Open    Closed   Open     Open

  100MHz   66MHz      1.5x      Closed    Open     Open    Open     Open

  100MHz   50MHz       2x       Closed   Closed   Closed   Open     Closed

  120MHz   60MHz       2x       Closed    Open    Closed   Open     Closed

  125MHz   50MHz      2.5x       Open    Closed   Closed   Open     Closed

  133MHz   66MHz       2x       Closed    Open     Open    Open     Closed

  150MHz   60MHz      2.5x      Closed    Open    Closed   Closed   Closed

  166MHz   66MHz      2.5x      Closed    Open     Open    Closed   Closed

  180MHz   60MHz       3x       Closed    Open    Closed   Closed   Open

  200MHz   66MHz       3x       Closed    Open     Open    Closed   Open

                            CPU TYPE SELECTION

         Type                    JP21                      JP29

         P54C              Pins 1 & 3, 2 & 4         Pins 1 & 3, 2 & 4
                                closed                    closed

         P55C                    Open                      Open

      CPU VOLTAGE SELECTION (SINGLE)

       Voltage               JP24

        2.5v          Pins 1 & 2 closed

        3.4v          Pins 2 & 3 closed

                       CPU VOLTAGE SELECTION (DUAL)

      Voltage           V core             JP20               JP24

       2.5v               3v            Pins 2 & 3      Pins 1 & 2 closed
                                          closed

       2.5v              3.4v           Pins 1 & 2      Pins 1 & 2 closed
                                          closed

       3.4v               3v            Pins 2 & 3      Pins 2 & 3 closed
                                          closed

       3.4v              3.4v           Pins 1 & 2      Pins 2 & 3 closed
                                          closed

                              CMOS SELECTION

            Setting                      JP11                 JP19

         CMOS memory normal             Open                 Open
              operation

          CMOS memory clear             Closed               Closed

