INFORMTECH INTERNATIONAL, INC.

IT386SK VER. 1.0

Processor         80386DX
Processor Speed   25/33/40MHz
Chip Set          C & T
Max. onboard DRAM 32MB
Cache             32/64/128/256KB
BIOS              Unidentified
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387DX

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Turbo LED                   JP4       Speaker                    J24

  External battery            J10       Reset switch               SW1

  Power LED & keylock         J23       Turbo switch               SW2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select monochrome          JP1             Closed

      Monitor type select color               JP1              Open

  »   CMOS memory normal operation            JP2           Pins 2 & 3
                                                              closed

      CMOS memory clear                       JP2           Pins 1 & 2
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 256K x 9    (4) 1M x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      20MB        (4) 1M x 9      (4) 4M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

                            CACHE CONFIGURATION

    Size       Bank 0     Bank 1     TAG (U32)    TAG (U33)     TAG (U2)

    32KB      (4) 8K x     NONE      (1) 2K x 4   (1) 2K x 4    (1) 2K x
                 8                                                 4

    64KB      (4) 8K x    (4) 8K x   (1) 4K x 4   (1) 4K x 4    (1) 4K x
                 8           8                                     4

   128KB       (4) 32K     NONE      (1) 8K x 4   (1) 8K x 4    (1) 8K x
                x 8                                                4

   256KB       (4) 32K    (4) 32K     (1) 16K x    (1) 16K x    (1) 16K x
                x 8         x 8          4            4            4

                     CACHE JUMPER CONFIGURATION

   Size      JP5      JP6       JP7       JP8      JP9       JP10

   32KB     1 & 2    1 & 2     1 & 2     Open     2 & 3     2 & 3

   64KB     2 & 3    1 & 2     1 & 2     Open     2 & 3     1 & 2

  128KB     2 & 3    1 & 2     2 & 3     Closed   2 & 3     1 & 2

  256KB     2 & 3    2 & 3     2 & 3     Closed   1 & 2     1 & 2

  Note: Pins designated should be in the closed position.

            AT BUS SPEED SELECTION

   CPU speed      AT bus clock       JP3

     25MHz          8.33MHz          Open

     33MHz          8.33MHz         Closed

     40MHz           10MHz          Closed