
INFORMTECH INTERNATIONAL, INC.

286/SUPRA (MODEL C)

Processor             80286
Processor Speed       6/8/10/12/16/20MHz
Chip Set              C & T
Max. Onboard DRAM     2MB
SRAM Cache            None
BIOS                  Award
Dimensions            330mm x 218mm
I/O Options           16-bit external memory card slot, auxillary keyboard
                      connector
NPU Options           80287

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Auxiliary keyboard          J9       Power LED & keylock         P5

  Turbo LED                   P2       External battery            P8

  Speaker                     P3       16-bit external             S1
                                       memory card

  Reset switch                P4

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

      BIOS type select 27256                 J4              pins 2 & 3
                                                               closed

      BIOS type select 27128                 J4              pins 1 & 2
                                                               closed

     Keyboard controller clock              J5              pins 1 & 2
      speed select 6MHz                                        closed

      Keyboard controller clock              J5              pins 2 & 3
      speed select 12MHz                                       closed

      Battery type select Alkaline           J7                closed
      4.5VDC

      Battery type select Lithium            J7                 open
      6VDC

     Power good signal detect               J8              pins 2 & 3
      from power supply                                        closed

      Power good signal detect               J8              pins 1 & 2
      from board                                               closed

      Monitor type select color         SW1/Switch 3           closed

      Monitor type select               SW1/Switch 3            open
      monochrome

                     CPU SPEED/BUS CLOCK CONFIGURATION

    CPU       AT Bus      J2        J3      J10        J13         J14
   Speed      Speed

   20MHz       8MHz      pins 1   pins 1   pins 2     open        open
                          & 2      & 2      & 3

   20MHz      10MHz       N/A     pins 1   pins 2    closed       open
                                   & 2      & 3

   20MHz      12MHz      pins 2   pins 1   pins 2     open        open
                          & 3      & 2      & 3

   16MHz       8MHz      pins 1   pins 1   pins 1     open        open
                          & 2      & 2      & 2

   16MHz      12MHz      pins 2   pins 1   pins 1     open        open
                          & 3      & 2      & 2

   12MHz       6MHz       N/A     pins 2    N/A      closed       open
                                   & 3

   12MHz       8MHz      pins 1   pins 2    N/A       open        open
                          & 2      & 3

   12MHz      12MHz      pins 2    N/A      N/A       open       closed
                          & 3

   10MHz      10MHz       N/A     pins 1   pins 2    closed      closed
                                   & 2      & 3

   8MHz        8MHz      pins 1    N/A      N/A       open       closed
                          & 2

   6MHz        6MHz       N/A     pins 2    N/A      closed      closed
                                   & 3

  Note:Pins designated should be in the closed position.

                 NPU CLOCK RATE CONFIGUARATION

      NPU         Clock Rate     SW1/Switch 1    SW1/Switch 2

    80287-8          6MHz           closed          closed

    80287-8          8MHz            open           closed

    80287-10         10MHz          closed           open

    80287-12         12MHz           open            open

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1          J11            J12

     512KB       (18) 41256        NONE          open           open

      1MB        (18) 41256     (18) 41256      closed          open

      2MB       (18) 411000        NONE          open          closed

      4MB       (18) 411000    (18) 411000      closed         closed

