MULTIBEST INDUSTRIAL & MANUFACTURING, INC.

MB486EISA

Processor          80486DX
Processor Speed    33/50MHz
Chip Set           Intel
Max. Onboard DRAM  32MB
Cache              64/128KB (on external CPU/SRAM card)
BIOS               Phoenix
Dimensions         330.4mm x 218.4mm
I/O Options        32-bit external CPU/SRAM card slot
NPU Options        None

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Reset switch               J3        Speaker                    J8

  Power LED & keylock        J7        32-bit external            S1
                                       CPU/SRAM card

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

  »   I/O recovery disabled                     J1             Open

      I/O recovery enabled                      J1            Closed

  »   System bus posted write disabled          J2             Open

      System bus posted write enabled           J2            Closed

  »   Monitor type select monochrome            J6             Open

      Monitor type select color                 J6            Closed

  »   BIOS mode select normal operation        J10           pins 1 & 2
      (+5VPP)                                                 closed

      BIOS mode select programmable            J10           pins 2 & 3
      (+12VPP)                                                closed

                            DRAM CONFIGURATION

  Size    Bank     Bank    Bank    Bank    Bank     Bank    Bank   Bank 7
           0        1       2       3       4        5       6

  1MB     256K    NONE    NONE     NONE    NONE    NONE    NONE     NONE
          x 36

  2MB     256K     256K   NONE     NONE    NONE    NONE    NONE     NONE
          x 36    x 36

  3MB     256K     256K    256K    NONE    NONE    NONE    NONE     NONE
          x 36    x 36    x 36

  4MB     256K     256K    256K    256K    NONE    NONE    NONE     NONE
          x 36    x 36    x 36     x 36

  4MB     1M x    NONE    NONE     NONE    NONE    NONE    NONE     NONE
           36

  5MB     1M x    NONE    NONE     NONE    256K    NONE    NONE     NONE
           36                              x 36

  6MB     1M x    NONE    NONE     NONE    256K     256K   NONE     NONE
           36                              x 36    x 36

  7MB     1M x    NONE    NONE     NONE    256K     256K    256K    NONE
           36                              x 36    x 36    x 36

  8MB     1M x    NONE    NONE     NONE    256K     256K    256K   256K x
           36                              x 36    x 36    x 36      36

  8MB     1M x     1M x   NONE     NONE    NONE    NONE    NONE     NONE
           36      36

  9MB     1M x     1M x   NONE     NONE    256K    NONE    NONE     NONE
           36      36                      x 36

  10MB    1M x     1M x   NONE     NONE    256K     256K   NONE     NONE
           36      36                      x 36    x 36

  11MB    1M x     1M x   NONE     NONE    256K     256K    256K    NONE
           36      36                      x 36    x 36    x 36

  12MB    1M x     1M x   NONE     NONE    256K     256K    256K   256K x
           36      36                      x 36    x 36    x 36      36

  12MB    1M x     1M x    1M x    NONE    NONE    NONE    NONE     NONE
           36      36      36

  13MB    1M x     1M x    1M x    NONE    256K    NONE    NONE     NONE
           36      36      36              x 36

  14MB    1M x     1M x    1M x    NONE    256K     256K   NONE     NONE
           36      36      36              x 36    x 36

  15MB    1M x     1M x    1M x    NONE    256K     256K    256K    NONE
           36      36      36              x 36    x 36    x 36

  16MB    1M x     1M x    1M x    NONE    256K     256K    256K   256K x
           36      36      36              x 36    x 36    x 36      36

  16MB    1M x     1M x    1M x    1M x    NONE    NONE    NONE     NONE
           36      36      36       36

  17MB    1M x     1M x    1M x    1M x    256K    NONE    NONE     NONE
           36      36      36       36     x 36

  18MB    1M x     1M x    1M x    1M x    256K     256K   NONE     NONE
           36      36      36       36     x 36    x 36

  19MB    1M x     1M x    1M x    1M x    256K     256K    256K    NONE
           36      36      36       36     x 36    x 36    x 36

  20MB    1M x     1M x    1M x    1M x    256K     256K    256K   256K x
           36      36      36       36     x 36    x 36    x 36      36

  20MB    1M x     1M x    1M x    1M x    1M x    NONE    NONE     NONE
           36      36      36       36      36

  24MB    1M x     1M x    1M x    1M x    1M x     1M x   NONE     NONE
           36      36      36       36      36      36

  28MB    1M x     1M x    1M x    1M x    1M x     1M x    1M x    NONE
           36      36      36       36      36      36      36

  32MB    1M x     1M x    1M x    1M x    1M x     1M x    1M x    1M x
           36      36      36       36      36      36      36       36

                           SRAM CONFIGURATION

            Size                     Intel Turbocache part number

            64KB                               82485MA

            128KB                              82485MB

  Note:Intel Turbocache modules plug into CPU card located in slot S1.