
UNIDENTIFIED

S 286 SYSTEM BOARD

Processor              80286
Processor Speed        6/10/12/16MHz
Chip Set               VLSI
Video Chip Set         None
Maximum Onboard Memory 4MB
Maximum Video Memory   None
Cache                  None
BIOS                   Award/Phoenix
Dimensions             330mm x 218mm
I/O Options            None
NPU Options            80287

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Speaker                     J19       Turbo switch               JP4

  Power LED & keylock         J20       Turbo LED                  JP5

  External battery            J21       Reset switch               JP6

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not          DSP/2              On
      alter

      EMS port address select 0E8H -       DSP/4              On
      0EFH

      EMS port address select 098H -       DSP/4              Off
      09FH

     Factory configured - do not           JP2          Unidentified
      alter

      BIOS type select Phoenix              JP7        Pins 1 & 2 closed

      BIOS type select Award                JP7        Pins 2 & 3 closed

      EMS type select extended mode         JP8              Open

      EMS type select expanded mode         JP8             Closed

     Factory configured - do not          JP10          Unidentified
      alter

      Wait state select 1 wait state       JP11        Pins 1 & 2 closed

      Wait state select 0 wait             JP11        Pins 2 & 3 closed
      states

      Monitor type select monochrome        SW1        Pins 1 & 2 closed

      Monitor type select color             SW1        Pins 2 & 3 closed

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

     512KB       (18) 41256       None

     640KB       (18) 41256     (18) 4164

      1MB        (18) 41256    (18) 41256

   1MB (EMS)     (18) 41256    (18) 41256

      2MB        (18) 411000      None

   2MB (EMS)     (18) 411000      None

      4MB        (18) 411000   (18) 411000

   4MB (EMS)     (18) 411000   (18) 411000

             DRAM SWITCH CONFIGURATION

    Size        DSP/6        DSP/7        DSP/8

    512KB         On           On          On

    640KB         On           On          Off

     1MB          On          Off          On

  1MB (EMS)       On          Off          Off

     2MB         Off           On          On

  2MB (EMS)      Off           On          Off

     4MB         Off          Off          On

  4MB (EMS)      Off          Off          Off

        DRAM JUMPER CONFIGURATION

        Size                 J18

        256KB         Pins 1 & 2 closed

        512KB         Pins 2 & 3 closed

                       CLOCK SPEED SELECTION

         Speed                 DSP/1                   JP1

          Low                    On             Pins 2 & 3 closed

         High                   Off             Pins 2 & 3 closed

  Keyboard controlled           N/A             Pins 1 & 2 closed

                        BIOS SELECTION

        Size                 JP9                 DSP/5

        27128          Pins 1 & 2 closed           On

        27256          Pins 2 & 3 closed          Off

                      I/O WAIT STATE SELECTION

      Wait states              DSP/3                   JP3

           4                     On             Pins 2 & 3 closed

           6                    Off             Pins 2 & 3 closed

  Keyboard controlled           N/A             Pins 1 & 2 closed

