UNIDENTIFIED

MB286T 20

Processor         80286
Processor Speed   20MHz
Chip Set          Goldstar
Max. Onboard DRAM 5MB
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             J2       Reset switch               J11

  Turbo switch                 J7       Speaker                    J13

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

  »   CMOS memory normal operation              J1            Closed

      CMOS memory clear                         J1             Open

  »   Factory configured - do not alter        JP1              N/A

  »   Factory configured - do not alter        JP8              N/A

  »   Factory configured - do not alter        JP9              N/A

  »   Monitor type select color                JP10           Closed

      Monitor type select monochrome           JP10            Open

                            DRAM CONFIGURATION

   Size     Bank 0     Parity 0   Bank 1     Parity 1   Bank 2    Bank 3

  512KB       (4)        (2)       NONE       NONE       NONE      NONE
             44256      41256

   1MB        (4)        (2)        (4)        (2)       NONE      NONE
             44256      41256      44256      41256

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

   3MB        (4)        (2)        (4)        (2)      (2) 1M     NONE
             44256      41256      44256      41256      x 9

   5MB        (4)        (2)        (4)        (2)      (2) 1M     (2) 1M
             44256      41256      44256      41256      x 9        x 9

  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.

                         BASE MEMORY CONFIGURATION

                     Banks                      JP1, JP2, JP3, JP4, JP5 &
                                                           JP6

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

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

  Note: Exact arrangement & size of DIPP sockets unidentified.