
BEK-TRONIC TECHNOLOGY, INC.

BEK-P402

Processor  CX486S/80486SX/CX486DX/SL80486DX/LSE80486DX/80486DX/SL80486DX2/80486DX2/80486DX4/P24D/Pentium
           Overdrive
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   OPTI
Max.       128MB
Onboard
DRAM
Cache      64/128/256KB
BIOS       Award
Dimensions 255mm x 220mm
I/O        32-bit VESA local bus slots (3), 32-bit PCI slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                   Location     Purpose               Location

  External battery             J2        Turbo LED               JP27

  Power LED & keylock         J16        Turbo switch            JP28

  Green PC connector          JP3        Reset switch             S1
  (monitor)

  Speaker                     JP25       32-bit PCI slots      PC1 - PC3

  Green PC connector          JP26       32-bit VESA local     SL1 - SL3
                                         bus slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not alter        JP1              N/A

     CMOS memory normal operation             JP2           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP2           pins 1 & 2
                                                              closed

     PCI clock type select synchronous        JP4           pins 2 & 3
                                                              closed

      PCI clock type select                    JP4           pins 1 & 2
      asynchronous                                            closed

     Factory configured - do not alter        JP9           pins 2 & 3
                                                              closed

                        DRAM CONFIGURATION

      Size            Bank 0           Bank 1          Bank 2

       1MB         (4) 256K x 9         NONE            NONE

       1MB             NONE        (1) 256K x 36        NONE

       2MB         (4) 256K x 9    (1) 256K x 36        NONE

       2MB         (4) 256K x 9         NONE        (1) 256K x 36

       2MB             NONE        (1) 256K x 36    (1) 256K x 36

       4MB          (4) 1M x 9          NONE            NONE

       4MB             NONE         (1) 1M x 36         NONE

       5MB         (4) 256K x 9     (1) 1M x 36         NONE

       5MB         (4) 256K x 9         NONE         (1) 1M x 36

       8MB          (4) 1M x 9      (1) 1M x 36         NONE

       8MB          (4) 1M x 9          NONE         (1) 1M x 36

       8MB             NONE         (1) 1M x 36      (1) 1M x 36

      16MB          (4) 4M x 9          NONE            NONE

      16MB             NONE         (1) 4M x 36         NONE

      17MB         (4) 256K x 9     (1) 4M x 36         NONE

      17MB         (4) 256K x 9         NONE         (1) 4M x 36

      20MB          (4) 1M x 9      (1) 4M x 36         NONE

      20MB          (4) 1M x 9          NONE         (1) 4M x 36

      32MB          (4) 4M x 9      (1) 4M x 36         NONE

      32MB          (4) 4M x 9          NONE         (1) 4M x 36

      32MB             NONE         (1) 4M x 36      (1) 4M x 36

      64MB         (4) 16M x 9          NONE            NONE

      64MB             NONE         (1) 16M x 36        NONE

      128MB        (4) 16M x 9      (1) 16M x 36        NONE

      128MB        (4) 16M x 9          NONE        (1) 16M x 36

        DRAM JUMPER CONFIGURATION

        Size                 JP45

         1MB          pins 1 & 2 closed

         1MB          pins 1 & 2 closed

         2MB          pins 2 & 3 closed

         2MB          pins 1 & 2 closed

         2MB          pins 1 & 2 closed

         4MB          pins 1 & 2 closed

         4MB          pins 1 & 2 closed

    DRAM JUMPER CONFIGURATION (CONT)

        Size                 JP45

         5MB          pins 2 & 3 closed

         5MB          pins 1 & 2 closed

         8MB          pins 2 & 3 closed

         8MB          pins 1 & 2 closed

         8MB          pins 1 & 2 closed

        16MB          pins 1 & 2 closed

        16MB          pins 1 & 2 closed

        17MB          pins 2 & 3 closed

        17MB          pins 1 & 2 closed

        20MB          pins 2 & 3 closed

        20MB          pins 1 & 2 closed

        32MB          pins 2 & 3 closed

        32MB          pins 1 & 2 closed

        32MB          pins 1 & 2 closed

        64MB          pins 1 & 2 closed

        64MB          pins 1 & 2 closed

        128MB         pins 2 & 3 closed

        128MB         pins 1 & 2 closed

                            CACHE CONFIGURATION

       Size              Bank 0            Bank 1              TAG

       64KB            (4) 8K x 8        (4) 8K x 8        (1) 8K x 8

       128KB           (4) 32K x 8          NONE           (1) 8K x 8

       256KB           (4) 32K x 8      (4) 32K x 8       (1) 16K x 8 or
                                                           (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

      Size               JP20               JP22               JP24

      64KB            pins 2 & 3            Open               Open
                        closed

      128KB           pins 1 & 2           Closed              Open
                        closed

      256KB           pins 2 & 3           Closed             Closed
                        closed

      CACHE TAG JUMPER CONFIGURATION

        Size                 JP23

       8K x 8         pins 1 & 2 closed

       16K x 8        pins 2 & 3 closed

       32K x 8        pins 1 & 2 closed

                          CPU TYPE CONFIGURATION

     Type         JP6         JP7         JP8         JP10        JP11

    CX486S       Open        Open         Open        1 & 2       Open

    8048SX       Open        Open         Open        Open        Open

   CX486DX       1 & 2       1 & 2        Open        Open        Open

  SL80486DX      Open        1 & 2        Open        Open        Open

  LSE80486DX     Open        Open         Open        Open        Open

   80486DX       Open        1 & 2        Open        Open        Open

  SL80486DX2     Open        1 & 2        Open        Open        Open

   80486DX2      Open        1 & 2        Open        Open        Open

   80486DX4      Open        1 & 2        Open        Open        Open

     P24D        Open        1 & 2       Closed       Open       Closed

     P24T        Open        1 & 2        Open        2 & 3       Open

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

      Type          JP12        JP13        JP14       JP15        JP16

     CX486S         Open        Open        1 & 2      2 & 3     1 & 2, 4
                                                                   & 5

     8048SX         Open        Open        1 & 2      2 & 3     1 & 2, 4
                                                                   & 5

     CX486DX        Open        Open        1 & 2     1 & 2, 3   1 & 2, 4
                                                        & 4        & 5

    SL80486DX       Open       Closed       1 & 2     1 & 2, 3   1 & 2, 4
                                                        & 4        & 5

   LSE80486DX       Open       Closed       1 & 2      2 & 3     1 & 2, 4
                                                                   & 5

     80486DX        Open        Open        1 & 2     1 & 2, 3   1 & 2, 4
                                                        & 4        & 5

   SL80486DX2       Open       Closed       1 & 2     1 & 2, 3   1 & 2, 4
                                                        & 4        & 5

    80486DX2        Open        Open        1 & 2     1 & 2, 3   1 & 2, 4
                                                        & 4        & 5

    80486DX4        Open       Closed       1 & 2     1 & 2, 3   1 & 2, 4
                                                        & 4        & 5

      P24D          Open       Closed       1 & 2     1 & 2, 3   1 & 2, 4
                                                        & 4        & 5

      P24T          Open       Closed       2 & 3     1 & 2, 3   1 & 2, 4
                                                        & 4        & 5

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

     Type         JP17        JP21         JP36         JP37       JP38

    CX486S        Open        Open         Open        Closed      Open

    8048SX        Open        Open         Open         Open       Open

   CX486DX        Open        Open         Open        Closed      Open

  SL80486DX      Closed      Closed       Closed        Open       Open

  LSE80486DX     Closed      Closed       Closed        Open       Open

   80486DX        Open        Open         Open         Open       Open

  SL80486DX2     Closed      Closed       Closed        Open       Open

   80486DX2       Open        Open         Open         Open       Open

   80486DX4      Closed      Closed       Closed        Open       Open

     P24D        Closed      Closed       Closed        Open       Open

     P24T        Closed      Closed       Closed        Open       Open

    CPU SPEED CONFIGURATION

   Speed      JP30      JP31

   25MHz      Open      Open

   33MHz     Closed    Closed

   40MHz      Open     Closed

  50iMHz      Open      Open

   50MHz     Closed     Open

  66iMHz     Closed    Closed

  75iMHz      Open      Open

  100iMHz    Closed    Closed

        PCI SPEED CONFIGURATION

  Speed      JP46     JP47      JP48

  25MHz     Closed    Open      Open

  33MHz     Closed   Closed    Closed

