UNIDENTIFIED

386 MOTHERBOARD

Processor          80386SX
Processor Speed    16/25MHz
Chip Set           C & T
Max. Onboard DRAM  8MB
Cache              None
BIOS               AMI
Dimensions         254mm x 218mm
I/O Options        32-bit external memory cards (2)
NPU Options        80287/80387SX/3167 (location of the 80287 is
                   unidentified)

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            CN1       Reset switch              J19

  Turbo switch                J16       Turbo LED                 J22

  Power LED & keylock         J17       32-bit system memory   SL1 & SL2
                                        cards

  Speaker                     J18

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Factory configured - do not             CN2              N/A
      alter

      80287 not installed                     JP1              Open

      80287 installed                         JP1             Closed

      Monitor type select color               JP3           pins 1 & 2
                                                              closed

      Monitor type select monochrome          JP3           pins 2 & 3
                                                              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

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

          NPU TYPE CONFIGURATION (80387/WEITEK ONLY)

       Setting               JP11                 JP12

  NPU not installed          Open                 Open

    NPU installed           Closed               Closed

          MISCELLANEOUS TECHNICAL NOTE

  Note: The location of pin 1 is unidentified.