INFORMTECH INTERNATIONAL, INC.

IT386SX

Processor         80386SX
Processor Speed   8/16/20MHz
Chip Set          Intel
Max. Onboard DRAM 2MB
Cache             None
BIOS              Phoenix
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                 Location    Purpose                   Location

  Turbo LED                  P2       External battery             P8

  Speaker                    P3       Keyboard connector           J9

  Reset switch               P4       32-bit external memory      SL1
                                      card

  Power LED & keylock        P5

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

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

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

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

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

  »   Monitor type select color               J19             Closed

      Monitor type select monochrome          J19              Open

                       DRAM CONFIGURATION

    Size        Bank 0      Parity 0     Bank 1      Parity 1

     1MB      (8) 44256    (4) 41256      NONE         NONE

     2MB      (8) 44256    (4) 41256    (8) 44256    (4) 41256

                          CPU SPEED CONFIGURATION

  CPU Speed       Clock        J2        J10         J13          J14
                 speed

     8MHz         8MHz       1 & 2       Open        Open        Closed

    16MHz         8MHz       1 & 2      1 & 2        Open         Open

    16MHz        12MHz       2 & 3      1 & 2        Open         Open

    20MHz         8MHz       1 & 2      2 & 3        Open         Open

    20MHz        10MHz        Open      2 & 3       Closed        Open

    20MHz        12MHz       2 & 3      2 & 3        Open         Open

  Note: Pins designated should be in the closed position.

                       BATTERY TYPE CONFIGURATION

                Type                                J7

  3.6v (without limiting resistor)           pins 1 & 2 closed

                4.5v                         pins 1 & 3 closed

    6v (with limiting resistor)              pins 3 & 4 closed

                 6v                                Open