UNIDENTIFIED

80386 MOTHERBOARD

Processor           80386DX
Processor Speed     25MHz
Chip Set            C & T
Max. Onboard DRAM   8MB
Cache               None
BIOS                AMI/Award/Phoenix
Dimensions          330mm x 218mm
I/O Options         32-bit external memory card slots (2)
NPU Options         80287/80387

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  Speaker                    J11       32-bit external             S1
                                       memory card

  Turbo switch               J12       32-bit external             S2
                                       memory card

  Power LED & keylock        J13       Reset switch               SW1

  External battery          JP10       Turbo LED                  SW2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                JP8           pins 1 & 2
                                                              closed

      Monitor type select monochrome           JP8           pins 2 & 3
                                                              closed

  »   CMOS memory normal operation             JP9             Open

      CMOS memory clear                        JP9            Closed

                            DRAM CONFIGURATION

    Size        Bank 0         Bank 1         Bank 2           Bank 3

    2MB       (4) 256K x     (4) 256K x        NONE             NONE
                  9              9

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

    10MB      (4) 1M x 9     (4) 1M x 9     (36) 41256       (36) 41256

    16MB      (4) 1M x 9     (4) 1M x 9     (36) 411000     (36) 411000

  Note:Banks 2 & 3 are used when a 32-bit external memory card is
  installed.

            NPU TYPE CONFIGURATION

    Type        JP3         JP6        JP7

   80287       Open       Closed       Open

   80387      Closed      Closed      Closed

  Disabled     Open        Open        Open

                          NPU MODE CONFIGURATION

          Setting                     JP2                    JP4

    Synchronous with cpu       pins 1 & 2 closed      pins 2 & 3 closed

      Synchronous with         pins 2 & 3 closed      pins 1 & 2 closed
      oscillator osc1

                      BIOS CONFIGURATION

       Setting               JP1                  JP20

      AMI/Award        pins 1 & 2 closed   pins 1 & 2 closed

       Phoenix         pins 2 & 3 closed   pins 2 & 3 closed