BEK-TRONIC TECHNOLOGY, INC.

BEK-V409

Processor        80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         UMC
Max. Onboard DRAM128MB
Cache            32/64/128/256KB
BIOS             AMI
Dimensions       254mm x 218mm
I/O Options      32-bit VESA local bus slots (3)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  External battery            J1       Speaker                     J5

  Reset switch                J2       Power LED & keylock         J6

  Turbo switch                J3       32-bit VESA local bus   SL1 - SL3
                                       slots

  Turbo LED                   J4

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Factory configured - do not             JP1              N/A
      alter

  »   VESA card type select any card          JP3           pins 1 & 2
      installed                                               closed

      VESA card type select Weitek            JP3           pins 2 & 3
      9000 only                                               closed

  »   ADS delay select no delays              JP5           pins 1 & 2
                                                              closed

      ADS delay select 1 delay for            JP5           pins 2 & 3
      50MHz                                                   closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      20MB        (4) 4M x 9      (4) 1M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        NONE

     128MB        (4) 16M x 9    (4) 16M x 9

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

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

     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) 32K x 8

                        CACHE JUMPER CONFIGURATION

   Size        JP12          JP13         JP14        JP15        JP16

   32KB        Open       pins 2 & 3      Open        Open        Open
                            closed

   64KB        Open       pins 1 & 2      Open       Closed       Open
                            closed

   128KB     pins 2 & 3   pins 2 & 3      Open       Closed      Closed
              closed        closed

   256KB     pins 1 & 2   pins 1 & 2     Closed      Closed      Closed
              closed        closed

                          CPU TYPE CONFIGURATION

           Type                     JP17                    JP18

          80486SX             pins 2 & 3 closed             Open

          80487SX             pins 1 & 2, 3 & 4       pins 2 & 3 closed
                                   closed

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

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

     Pentium Overdrive        pins 1 & 2, 3 & 4       pins 1 & 2 closed
                                   closed

         CPU SPEED CONFIGURATION

  Speed      JP8        JP9      JP10

  25MHz      Open     Closed    Closed

  33MHz      Open      Open     Closed

  40MHz     Closed    Closed     Open

  50iMHz     Open     Closed    Closed

  50MHz      Open     Closed     Open

  66iMHz     Open      Open     Closed

  BUS SPEED CONFIGURATION

  CPU speed        JP11

   <= 33MHz        Open

   > 33MHz        Closed