UNIDENTIFIED

PRECISION 286 TURBO

Processor         80286 (exact location unidentified)
Processor Speed   10/12MHz
Chip Set          VLSI
Max. Onboard DRAM 4MB
Cache             None
BIOS              AMI/Award/Phoenix
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80287 (exact location unidentified)

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J13      Turbo LED                  CN22

  Speaker                     J23      Reset switch               CN23

  Turbo switch               CN20      Power LED & keylock        CN24

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

      Monitor type select color                J3             Closed

      Monitor type select monochrome           J3              Open

      Wait state select 0 wait states         J11             Closed

      Wait state select 1 wait state          J11              Open

      Parity enabled                          J12             Closed

      Parity disabled                         J12              Open

                            DRAM CONFIGURATION

    Size       Bank 0       Bank 0A     Bank 0B     Bank 1      Bank 1A

   512KB      (8) 41256      NONE        NONE     (8) 41256       NONE

   512KB        NONE       (2) 44256     NONE        NONE       (2) 44256

   640KB      (8) 41256      NONE        NONE     (8) 41256       NONE

   640KB        NONE       (2) 44256     NONE        NONE       (2) 44256

    1MB       (8) 41256      NONE        NONE     (8) 41256       NONE

    1MB         NONE       (2) 44256     NONE        NONE       (2) 44256

    2MB       (8) 411000     NONE        NONE     (8) 411000      NONE

    4MB       (8) 411000     NONE        NONE     (8) 411000      NONE

                        DRAM CONFIGURATION (CON’T)

    Size      Bank 1B     Bank 2      Bank 2A       Bank 3      Bank 3A

   512KB       NONE        NONE         NONE         NONE         NONE

   512KB       NONE        NONE         NONE         NONE         NONE

   640KB       NONE      (8) 4164       NONE       (8) 4164       NONE

   640KB       NONE        NONE       (2) 4464       NONE       (2) 4464

    1MB        NONE     (8) 41256       NONE      (8) 41256       NONE

    1MB        NONE        NONE       (2) 44256      NONE       (2) 44256

    2MB        NONE        NONE         NONE         NONE         NONE

    4MB        NONE     (8) 411000      NONE      (8) 411000      NONE

  Note: See table below for parity configuration.

                   DRAM PARITY CONFIGURATION

    Size         P 0          P 1          P 2          P 3

    512KB     (1) 41256    (1) 41256      NONE         NONE

    512KB        NONE         NONE        NONE         NONE

    640KB     (1) 41256    (1) 41256    (1) 4164     (1) 4164

    640KB        NONE         NONE        NONE         NONE

     1MB      (1) 41256    (1) 41256    (1) 41256    (1) 41256

     1MB         NONE         NONE        NONE         NONE

           DRAM CONFIGURATION (SIMM)

      Size          Bank 0B        Bank 1B

     512KB        (2) 256K x 9       NONE

      1MB         (2) 256K x 9   (2) 256K x 9

      2MB         (2) 1M x 9         NONE

      4MB         (2) 1M x 9      (2) 1M x 9

       DRAM JUMPER CONFIGURATION

   Size       J6       J7        J8

  512KB     Closed   Closed    Closed

  640KB     Closed   Closed     Open

   1MB      Closed    Open     Closed

   2MB      Closed    Open      Open

   4MB       Open    Closed    Closed