
BIOSTAR MICROTECH INTERNATIONAL CORPORATION

286 SYSTEM BOARD

Processor         80286
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

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Power LED & keylock         KLCK      Turbo LED                 TBLED

  Reset switch                RST       Turbo switch              TBSW

  Speaker                     SPK

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Location

     BIOS type select 27128                   JP1           pins 2 & 3
                                                              closed

      BIOS type select 27256                   JP1           pins 1 & 2
                                                              closed

     CPU slow speed select 8MHz               JP6            Closed

      CPU slow speed select 6MHz               JP6             Open

     Monitor type select color                JP7            Closed

      Monitor type select monochrome           JP7             Open

     DRAM speed select 0 wait states          JP8            Closed

      DRAM speed select 1 wait state           JP8             Open

                            DRAM CONFIGURATION

  Size     Bank 0    Bank 1     P-1     Bank 2     P-2      Bank   Bank 4
                                                             3

  512KB     (18)      NONE     NONE      NONE     NONE     NONE     NONE
    1      41256

  512KB     NONE       (4)      (2)      NONE     NONE     NONE     NONE
    1                44256     41256

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

  640KB     (18)      NONE     NONE       (4)      (2)     NONE     NONE
    1      41256                         4464     4164

  640KB     NONE       (4)      (2)       (4)      (2)     NONE     NONE
    1                44256     41256     4464     4164

  640KB     (18)      NONE     NONE      NONE     NONE      (2)     NONE
    2       4164                                            256K
                                                            x 9

  640KB     NONE      NONE     NONE       (4)      (2)      (2)     NONE
    2                                    4464     4164      256K
                                                            x 9

  1MB 1     (18)      NONE     NONE       (2)      (4)     NONE     NONE
           41256                        44256     41256

  1MB 1     (18)       (4)      (2)      NONE     NONE     NONE     NONE
           41256     44256     41256

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

  2MB 1     (18)      NONE     NONE      NONE     NONE     NONE     NONE
           411000

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

  4MB 1     (18)      NONE     NONE      NONE     NONE      (2)     NONE
           411000                                           1M x
                                                             9

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

  Note 1 :Set JP9, JP10, and JP11 pins 2 & 3 closed.

  Note 2 :Set JP9, JP10, and JP11 pins 1 & 2 closed.

       DRAM JUMPER CONFIGURATION

   Size      JP2       JP3       JP4

  512KB     Closed   Closed    Closed

  640KB     Closed   Closed     Open

   1MB      Closed    Open     Closed

   2MB      Closed    Open      Open

   4MB       Open    Closed    Closed

