
UNIDENTIFIED

MB286T 12/16

Processor         80286
Processor Speed   12/16MHz
Chip Set          Goldstar
Max. Onboard DRAM 5MB
SRAM Cache        None
BIOS              AMI
Dimensions        220mm x 230mm
I/O Options       None
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Power LED & keylock          J4       Turbo LED                  J8

  External battery            JP5       Reset switch               J11

  Turbo switch                 J7       Speaker                    J13

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

     Monitor type select color                JP3            closed

      Monitor type select monochrome           JP3             open

     CMOS memory normal operation             JP6            closed

      CMOS memory clear                        JP6             open

     Factory configured - do not alter        JP14           unknown

  Note: Location of JP3 is unverified.

                            BASE MEMORY SELECT

                Banks                   JP17,JP18,JP19,JP20,JP21 & JP22

  Base memory : Banks 2 & 3                    pins 1 & 2 closed

  Base memory : Banks 0 & 1                    pins 2 & 3 closed
  (Expansion memory : Banks 2 & 3)

  Note: Exact arrangement & size of DIPP sockets unverified.

                            DRAM CONFIGURATION

     Size        DIP Bank 0     DIP Bank 1     SIMM Bank 2   SIMM Bank 3

    512KB       (4) 44256 &        NONE           NONE           NONE

                 (2) 41256

     1MB        (4) 44256 &     (4) 44256 &       NONE           NONE

                 (2) 41256       (2) 41256

     2MB        (4) 44256 &     (4) 44256 &     (2) 256K x   (2) 256K x 9
                                                    9
                 (2) 41256       (2) 41256

     3MB        (4) 44256 &     (4) 44256 &    (2) 1M x 9        NONE

                 (2) 41256       (2) 41256

     5MB        (4) 44256 &     (4) 44256 &    (2) 1M x 9     (2) 1M x 9

                 (2) 41256       (2) 41256

  Note: This table for use when banks 0 & 1 are used for base memory and
  banks 2 & 3 are used for expansion memory.

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     512KB          NONE          NONE       (2) 256K x 9       NONE

      1MB           NONE          NONE       (2) 256K x 9   (2) 256K x 9

      2MB           NONE          NONE        (2) 1M x 9        NONE

     2.5MB          NONE          NONE       (2) 256K x 9    (2) 1M x 9

      4MB           NONE          NONE        (2) 1M x 9     (2) 1M x 9

  Note: This table for use when banks 2 & 3 are used for base memory
  only.

