UNIDENTIFIED

JS-128A

Processor           80286
Processor Speed     12MHz
Chip Set            SUNTAC
Max. Onboard DRAM   4MB
SRAM Cache          None
BIOS                AMI/Award/ERSO/Phoenix
Dimensions          330mm x 218mm
I/O Options         None
NPU Options         80287

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Power LED & keylock         J20       Turbo LED                  JP8

  Reset switch                JP6       Speaker                   JP10

  Turbo switch                JP7

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   CPU speed select fast                DSP1/1               Off

      CPU speed select slow                DSP1/1                On

  »   Monitor type select color            DSP1/2                On

      Monitor type select                  DSP1/2               Off
      monochrome

  »   Factory configured - do not          DSP1/3               N/A
      alter

  »   CPU speed select fast                DSP1/4                On

      EMS port address select 098H         DSP1/4               Off

  »   CPU speed select fast                DSP1/5                On

      BIOS type select 27256               DSP1/5               Off

  »   DRAM select 0 wait states              JP5               closed

      DRAM select 1 wait state               JP5                open

  »   CPU speed select fast                  JP9             pins 1 & 2
                                                               closed

      CPU speed select switchable            JP9             pins 2 & 3
      at turbo switch                                          closed

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

     512KB       (18) 41256       NONE

     640KB       (18) 41256     (18) 4164

      1MB        (18) 41256    (18) 41256

   1MB w/EMS     (18) 41256    (18) 41256

      2MB        (18) 411000      NONE

   2MB w/EMS     (18) 411000      NONE

      4MB        (18) 411000   (18) 411000

   4MB w/EMS     (18) 411000   (18) 411000

             DRAM SWITCH CONFIGURATION

    Size        DSP1/6       DSP1/7      DSP1/8

    512KB         On           On          On

    640KB         On           On          Off

     1MB          On          Off          On

  1MB w/EMS       On          Off          Off

     2MB         Off           On          On

  2MB w/EMS      Off           On          Off

     4MB         Off          Off          On

  4MB w/EMS      Off          Off          Off

              KEYBOARD CONFIGURATION

   Size      JP1       JP2       JP3       JP4

  Pin 32    Closed     Open      Open      Open

  Pin 27     Open     Closed     Open      Open

  Pin 23     Open      Open     Closed     Open

  Pin 30     Open      Open      Open     Closed