
BIOSTAR MICROTECH INTERNATIONAL CORPORATION

MB-1212V

Processor         80286
Processor Speed   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

  Reset switch                JP1      Turbo switch                JP4

  Power LED & keylock         JP2      Turbo LED                   JP5

  Speaker                     JP3      External battery           JP17

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     DRAM speed select 100ns                  JP6           pins 1 & 2
                                                              closed

      DRAM select 0 wait states               JP10            Closed

      DRAM select 1 wait state                JP10             Open

     BIOS type select 27256                  JP11           pins 1 & 2
                                                              closed

      BIOS type select 27128                  JP11           pins 2 & 3
                                                              closed

     Monitor type select color               JP12           pins 1 & 2
                                                              closed

      Monitor type select monochrome          JP12           pins 2 & 3
                                                              closed

      Keyboard controller set on pin 30       JP13            Closed

      Keyboard controller set on pin 23       JP14            Closed

      Keyboard controller set on pin 27       JP14            Closed

      Keyboard controller set on pin 32       JP18            Closed

      Power good signal detect                JP16              N/A

     Parity check enabled                    JP19           pins 1 & 2
                                                              closed

      Parity check disabled                   JP19           pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

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

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

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

  640KB    (4)     NONE      NONE      (16)     NONE      (2)       (2)
          44256                        4164             41256      4164

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

  2MB     NONE     NONE      (16)      NONE     NONE      (2)      NONE
                            411000                      411000

  4MB     NONE     NONE      (16)      (16)     NONE      (2)       (2)
                            411000    411000            411000    411000

       DRAM JUMPER CONFIGURATION

   Size      JP7       JP8       JP9

  512KB     Closed   Closed    Closed

  640KB     Closed   Closed     Open

   1MB      Closed    Open     Closed

   2MB      Closed    Open      Open

   4MB       Open    Closed    Closed

