
BEK-TRONIC TECHNOLOGY, INC.

BEK-V429

Processor  CX486M6/SL80486SX/80486SX/CX486M7/SL80486DX/80486DX/SL80486DX/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 330mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  External battery           J2        Speaker                   JP38

  Green PC connector         JP6       Green PC connector        JP39
                                       (monitor)

  Power LED & keylock       JP22       Green PC connector        JP41
                                       LED

  Turbo LED                 JP34       Reset switch               S1

  Turbo switch              JP36       32-bit VESA local       SL1 - SL3
                                       bus slots

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

     Monitor type select color               JP1             Closed

      Monitor type select monochrome          JP1              Open

     CMOS memory normal operation            JP2           pins 2 & 3
                                                              closed

      CMOS memory clear                       JP2           pins 1 & 2
                                                              closed

      Battery type select external            JP2              Open

     Factory configured - do not             JP7             Closed
      alter

     Factory configured - do not            JP30              N/A
      alter

     Factory configured - do not            JP31           pins 2 & 3
      alter                                                   closed

     LRDY wait state select 0 wait          JP33           pins 2 & 3
      states                                                  closed

      LRDY wait state select 1 wait          JP33           pins 1 & 2
      state                                                   closed

     Factory configured - do not            JP40         pins 1 & 2, 3 &
      alter                                                  4 closed

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

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

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

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

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

     4MB        (4) 256K x 9    (1) 256K x     (1) 256K x   (1) 256K x 36
                                   36             36

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

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

     6MB        (4) 256K x 9    (1) 256K x    (1) 1M x 36       NONE
                                   36

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

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

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

     10MB       (4) 256K x 9    (1) 256K x    (1) 1M x 36    (1) 1M x 36
                                   36

     12MB        (4) 1M x 9       NONE        (1) 1M x 36    (1) 1M x 36

     12MB           NONE       (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

     16MB        (4) 4M x 9       NONE           NONE           NONE

     16MB        (4) 1M x 9    (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

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

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

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

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

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

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

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

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

     64MB       (4) 16M x 9       NONE           NONE           NONE

     64MB        (4) 4M x 9    (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

     64MB           NONE       (1) 16M x 36      NONE           NONE

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

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

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

        DRAM JUMPER CONFIGURATION

        Size                 JP5

         1MB          pins 2 & 3 closed

         1MB          pins 1 & 2 closed

         2MB          pins 2 & 3 closed

         4MB          pins 2 & 3 closed

         4MB          pins 2 & 3 closed

         4MB          pins 1 & 2 closed

         5MB          pins 2 & 3 closed

         6MB          pins 2 & 3 closed

         8MB          pins 2 & 3 closed

         8MB          pins 2 & 3 closed

         8MB          pins 1 & 2 closed

        10MB          pins 2 & 3 closed

        12MB          pins 2 & 3 closed

        12MB          pins 1 & 2 closed

        16MB          pins 2 & 3 closed

        16MB          pins 2 & 3 closed

        16MB          pins 1 & 2 closed

        17MB          pins 2 & 3 closed

        20MB          pins 2 & 3 closed

        20MB          pins 2 & 3 closed

        20MB          pins 1 & 2 closed

        32MB          pins 2 & 3 closed

        32MB          pins 2 & 3 closed

        32MB          pins 1 & 2 closed

        64MB          pins 2 & 3 closed

        64MB          pins 2 & 3 closed

        64MB          pins 1 & 2 closed

        128MB         pins 2 & 3 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               JP8                JP27               JP28

      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                 JP26

       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          JP9          JP10        JP11       JP12       JP13

    CX486M6        Closed        Open       1 & 2      2 & 3       Open

   SL80486SX        Open        Closed      1 & 2      1 & 2       Open

    80486SX         Open         Open       1 & 2      1 & 2       Open

  CX486M7 (1x)     Closed        Open       2 & 3      2 & 3      1 & 2

  CX486M7 (2x)     Closed        Open       2 & 3      2 & 3      1 & 2

   SL80486DX        Open        Closed      1 & 2      1 & 2      1 & 2

    80486DX         Open         Open       1 & 2      1 & 2      1 & 2

   SL80486DX2       Open        Closed      1 & 2      1 & 2      1 & 2

    80486DX2        Open         Open       1 & 2      1 & 2      1 & 2

    80486DX4        Open        Closed      1 & 2      1 & 2      1 & 2

   P24D (WB)        Open        Closed      2 & 3      1 & 2      1 & 2

   P24D (WT)        Open        Closed      2 & 3      1 & 2      1 & 2

      P24T          Open        Closed      2 & 3      1 & 2      1 & 2

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

      Type          JP15       JP19       JP20        JP21        JP22

    CX486M6         Open       Open       Open        Open        Open

   SL80486SX        Open       Open      Closed      Closed       Open

    80486SX         Open       Open       Open        Open        Open

  CX486M7 (1x)      Open       Open       Open        Open       Closed

  CX486M7 (2x)      Open       Open       Open        Open       Closed

   SL80486DX        Open       Open      Closed      Closed       Open

    80486DX         Open       Open       Open        Open        Open

   SL80486DX2       Open       Open      Closed      Closed       Open

    80486DX2        Open       Open       Open        Open        Open

    80486DX4        Open       Open      Closed      Closed       Open

   P24D (WB)       Closed     1 & 2      Closed      Closed       Open

   P24D (WT)       Closed     2 & 3      Closed      Closed       Open

      P24T         Closed      Open      Closed      Closed       Open

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

        Type               JP23              JP29              JP32

      CX486M6           pins 2 & 3      pins 1 & 3, 2 &      pins 1 & 2
                          closed           4 closed           closed

     SL80486SX          pins 2 & 3      pins 1 & 3, 2 &        Open
                          closed           4 closed

      80486SX           pins 2 & 3      pins 1 & 3, 2 &        Open
                          closed           4 closed

    CX486M7 (1x)      pins 1 & 2, 3 &   pins 1 & 3, 2 &        Open
                         4 closed          4 closed

    CX486M7 (2x)      pins 1 & 2, 3 &   pins 1 & 3, 2 &        Open
                         4 closed          4 closed

     SL80486DX        pins 1 & 2, 3 &   pins 1 & 3, 2 &        Open
                         4 closed          4 closed

      80486DX         pins 1 & 2, 3 &   pins 1 & 3, 2 &        Open
                         4 closed          4 closed

     SL80486DX2       pins 1 & 2, 3 &   pins 1 & 3, 2 &        Open
                         4 closed          4 closed

      80486DX2        pins 1 & 2, 3 &   pins 1 & 3, 2 &        Open
                         4 closed          4 closed

      80486DX4        pins 1 & 2, 3 &   pins 3 & 5, 4 &        Open
                         4 closed          6 closed

     P24D (WB)        pins 1 & 2, 3 &   pins 1 & 3, 2 &      pins 2 & 3
                         4 closed          4 closed           closed

     P24D (WT)        pins 1 & 2, 3 &   pins 1 & 3, 2 &      pins 2 & 3
                         4 closed          4 closed           closed

        P24T          pins 1 & 2, 3 &   pins 1 & 3, 2 &      pins 2 & 3
                         4 closed          4 closed           closed

    CPU SPEED CONFIGURATION

   Speed      JP17      JP18

   25MHz      Open      Open

   33MHz     Closed    Closed

   40MHz     Closed     Open

  50iMHz      Open      Open

   50MHz      Open     Closed

  66iMHz     Closed    Closed

  75iMHz      Open      Open

  100iMHz    Closed    Closed

         VESA WAIT STATE CONFIGURATION

      Wait states                 JP35

     0 wait states                Open

      1 wait state               Closed

  Note: The location of JP35 is unidentified.

            BUS SPEED CONFIGURATION

       CPU speed                  JP37

        <= 33MHz                  Open

        > 33MHz                  Closed

  Note: The location of JP37 is unidentified.

