
DATAEXPERT CORPORATION/VISION TECHNOLOGIES

486WB CACHE/ESP486 (VER. 1)

Processor   CX486M6/80486SX/CX486M7/AMD486DXL/AMD486DX/80486DX/CX486DX2/
            AMD486DX2/80486DX2/80486DX4/Pentium Overdrive
Processor   25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set    OPTI
Max.        64MB
Onboard
DRAM
Cache       64/128/256KB
BIOS        Award
Dimensions  230mm x 218mm
I/O Options 32-bit VESA local bus slots (3)
NPU Options None

[Image]

                                CONNECTIONS

  Purpose                 Location    Purpose                   Location

  Power LED & keylock        J1       Turbo LED                   JP2

  Speaker                    J2       Power saving connector      JP26

  Reset switch               J3       Turbo switch                JP35

  External battery           J4       32-bit VESA Local bus    SL1 - SL3
                                      slots

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

     Monitor type select color                JP32           Closed

      Monitor type select monochrome           JP32            Open

     CMOS memory normal operation             JP33          pins 2 & 3
                                                              closed

      CMOS memory clear                        JP33          pins 1 & 2
                                                              closed

     L2 write through enabled                 JP34          pins 2 & 3
                                                              closed

      L2 write back enabled                    JP34          pins 1 & 2
                                                              closed

     Turbo speed enabled                      JP35            Open

      Turbo speed disabled                     JP35           Closed

     DRAM configuration select Table 1        JP41          pins 2 & 3
                                                              closed

      DRAM configuration select Table 2        JP41          pins 1 & 2
                                                              closed

                   DRAM CONFIGURATION (TABLE 1)

      Size            Bank 0          Bank 0/1         Bank 1

       2MB             NONE        (1) 512K 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             NONE        (1) 256K x 36     (1) 1M x 36

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

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

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

       8MB             NONE         (1) 2M x 36         NONE

      16MB             NONE         (1) 4M x 36         NONE

      16MB          (4) 4M x 9          NONE            NONE

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

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

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

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

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

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

      32MB             NONE         (1) 8M x 36         NONE

      64MB         (4) 16M x 9          NONE            NONE

                   DRAM CONFIGURATION (TABLE 2)

      Size            Bank 0          Bank 0/1         Bank 1

       2MB             NONE        (1) 512K x 36        NONE

       4MB          (4) 1M x 9          NONE            NONE

       4MB             NONE        (1) 512K x 36    (2) 512K x 36

       8MB             NONE         (1) 2M x 36         NONE

      10MB             NONE        (1) 512K x 36     (2) 2M x 36

      16MB          (4) 4M x 9          NONE            NONE

      16MB             NONE         (1) 2M x 36      (2) 2M x 36

      32MB             NONE         (1) 8M x 36         NONE

      64MB         (4) 16M x 9          NONE            NONE

      64MB             NONE         (1) 8M x 36      (2) 8M x 36

                            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               JP13               JP28               JP29

      64KB            pins 2 & 3            Open               Open
                        closed

      128KB           pins 1 & 2            Open              Closed
                        closed

      256KB           pins 2 & 3           Closed             Closed
                        closed

                TAG SRAM JUMPER CONFIGURATION

        Size                 TAG                  JP27

        64KB              (1) 8K x 8       pins 1 & 2 closed

        128KB             (1) 8K x 8       pins 1 & 2 closed

        256KB            (1) 16K x 8       pins 2 & 3 closed

        256KB            (1) 32K x 8       pins 1 & 2 closed

                          CPU TYPE CONFIGURATION

    Type       JP5     JP6      JP8     JP19    JP24     JP39      JP43

   80486SX      2 &    Open    Open     1 & 2   Open     2 & 3     Open
                3

   CX486M6      2 &    Open    Open     1 & 2   1 & 2    1 & 2     Open
                3

   CX486M7      1 &    2 & 3   1 & 2    1 & 2   1 & 2    1 & 2     Open
                2

   80486DX      1 &    2 & 3   1 & 2    1 & 2   Open     2 & 3     Open
                2

  80486DX4      1 &    2 & 3   1 & 2    1 & 2   Open     2 & 3    Closed
                2

  Overdrive     1 &    2 & 3   1 & 2    2 & 3   2 & 3    2 & 3     Open
                2

  Note: Pins designated should be in the closed position. 80486DX
  includes Intel and AMD DX/DXL.

                 CPU TYPE CONFIGURATION (UPDATED VERSION)

    Type       JP5     JP6      JP8     JP19    JP24     JP39      JP43

   80486SX      2 &    Open    Open     1 & 2   Open     2 & 3    Closed
                3

   CX486M6      2 &    Open    Open     1 & 2   1 & 2    1 & 2    Closed
                3

   CX486M7      1 &    2 & 3   1 & 2    1 & 2   1 & 2    1 & 2    Closed
                2

   80486DX      1 &    2 & 3   1 & 2    1 & 2   Open     2 & 3    Closed
                2

  80486DX4      1 &    2 & 3   1 & 2    1 & 2   Open     2 & 3     Open
                2

  Overdrive     1 &    2 & 3   1 & 2    2 & 3   2 & 3    2 & 3    Closed
                2

  Note: Pins designated should be in the closed position. 80486DX
  includes Intel and AMD DX/DXL.

                          CPU TYPE CONFIGURATION

          Type                JP11             JP12             JP25

          PQFP CPU           Open             Open            Closed
          disabled

       PQFP CPU enabled      Closed           Closed            Open

         CPU SPEED CONFIGURATION

  Speed      JP3        JP4      JP17

  25MHz     Closed    Closed     Open

  33MHz     Closed     Open     Closed

  40MHz      Open     Closed    Closed

  50iMHz    Closed    Closed     Open

  50MHz     Closed    Closed    Closed

  66iMHz    Closed     Open     Closed

         CPU CLOCK SPEED CONFIGURATION (INTEL DX4)

  Clock speed       JP36           JP37          JP38

      2x            Open          Closed         Open

     2.5x           Open           Open         Closed

      3x           Closed          Open          Open

                      CPU POWER VOLTAGE CONFIGURATION

      Voltage             JP44             JP45               JP46

     3.3 (DX4)            Open            Closed        pins 1 & 2 closed

   5 (other CPU)         Closed            Open         pins 2 & 3 closed

       VESA BUS SPEED CONFIGURATION

      CPU speed              JP40

      < = 33MHz       pins 2 & 3 closed

       > 33MHz        pins 1 & 2 closed

                      POWER MANAGEMENT CONFIGURATION

           Mode                      JP9                    JP10

           Non SMM                 Open                    Open

              SMM                  Closed                  Closed

