
INFORMTECH INTERNATIONAL, INC.

IT-AM33/40-DLC

Processor         80386DX/AMD386DX/CX486DLC
Processor Speed   16/25/33/40MHz
Chip Set          Maconics
Max. Onboard DRAM 32MB
Cache             None
BIOS              AMI
Dimensions        220mm x 170mm
I/O Options       None
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Turbo LED                    D5       Speaker                    J5

  External battery             J3       Turbo switch               J6

  Power LED & keylock          J4       Reset switch               J7

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     MC146818 enabled                        JP1           pins 2 & 3
                                                              closed

      DS1287 enabled                          JP1           pins 1 & 2
                                                              closed

     Monitor type select monochrome          JP2              Open

      Monitor type select color               JP2             Closed

     CPU brand selection INTEL/AMD           JP3           pins 1 & 2
      80386DX CPU                                             closed

      CPU brand selection CYRIX 486DLC        JP3           pins 2 & 3
      CPU                                                     closed

     CMOS memory normal operation            JP4           pins 1 & 2
                                                              closed

      CMOS memory data clear                  JP4           pins 2 & 3
                                                              closed

  Note:The exact location of JP3 is unidentified by the manufacturer.

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

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

      16MB        (4) 4M x 9         NONE

      17MB        (4) 4M x 9     (4) 256K x 9

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

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

                  CLOCK GENERATOR FREQUENCY CONFIGURATION

  Clock Speed   CPU Speed         JS1            JS2             JS3

    80MHz         40MHz        pins 1 & 2     pins 2 & 3      pins 2 & 3
                                 closed         closed         closed

    66MHz         33MHz        pins 2 & 3     pins 1 & 2      pins 2 & 3
                                 closed         closed         closed

    50MHz         25MHz        pins 1 & 2     pins 1 & 2      pins 2 & 3
                                 closed         closed         closed

    33MHz         16MHz        pins 1 & 2     pins 2 & 3      pins 1 & 2
                                 closed         closed         closed

