
UNIDENTIFIED

MBVLSI-168 B

Processor         80286
Processor Speed   12MHz
Chip Set          VLSI
Max. onboard DRAM 4MB
Cache             None
BIOS              AMI
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/Switch         Position

     Memory speed select - do not           JP6                N/A
      alter

     Wait state select 0 wait              JP10               Closed
      states

     Wait state select 1 wait              JP10                Open
      state

     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                   JP12             pins 2 & 3
      monochrome                                               closed

     Power good detect - do not            JP16                N/A
      alter

                            DRAM CONFIGURATION

  Size    Bank 0    Parity   Bank 1     Parity    JP7      JP8      JP9
                      0                   2

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

  640KB     (4)       (2)      (4)       (2)     Closed   Closed   Open
           44256    41256     4464      4164

  640KB     (4)       (2)      (16)      (2)     Closed   Closed   Open
           44256    41256     4164      4164

  1MB       (4)       (2)      (4)       (2)     Closed   Open     Closed
           44256    41256     44256     4164

  1MB       (4)       (2)      (16)      (2)     Closed   Open     Closed
           44256    41256     4164      4164

  2MB       (18)     NONE     NONE      NONE     Closed   Open     Open
          411000

  4MB       (18)     NONE      (18)     NONE     Open     Closed   Closed
          411000             411000

                     KEYBOARD CONTROLLER CONFIGURATION

   Pin Number        JP13          JP14           JP15           JP18

       23            Open         Closed          Open           Open

       27            Open          Open          Closed          Open

       30           Closed         Open           Open           Open

       32            Open          Open           Open          Closed

  Note:Make sure that the BIOS and the keyboard controller are compatible
  before shorting a controller pin for speed change via software.

