
BEK-TRONIC TECHNOLOGY, INC.

BEK-4806

Processor         80486SX/80487SX/80486DX
Processor Speed   50MHz
Chip Set          ACC
Max. Onboard DRAM 32MB
Cache             32/64/128/256KB
BIOS              Unidentified
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Reset switch                J1       Speaker                     J4

  Turbo switch                J2       Power LED & keylock         J5

  Turbo LED                   J3       External battery            J6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                JP1           pins 1 & 2
                                                              closed

      Monitor type select monochrome           JP1           pins 2 & 3
                                                              closed

  Note:The settings for this jumper are unidentified.

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

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

      16MB        (4) 4M x 9         NONE

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

      32MB        (4) 4M x 9      (4) 4M 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) 32K x 8

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

                        CACHE JUMPER CONFIGURATION

      Size           JK1            JK2            JK3           JK6

      32KB        1 & 2, 3 &     1 & 2, 3 &     1 & 2, 3 &      1 & 2
                      4              4              4

      64KB        1 & 2, 3 &     2 & 3, 4 &     1 & 2, 3 &      2 & 3
                      4              5              4

     128KB        2 & 3, 4 &     1 & 2, 4 &     1 & 2, 3 &      1 & 2
                      5              5              4

     256KB        2 & 3, 4 &     2 & 3, 4 &     2 & 3, 4 &      2 & 3
                      5              5              5

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

          Type                     JP2                      JP3

         80486SX            pins 2 & 3 closed        pins 2 & 3 closed

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

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

