INFORMTECH INTERNATIONAL, INC.
==============================

   IT486SQ

   Processor         80486SX/80487SX/80486DX/ODP486SX/80486DX2    
   Processor Speed   20/25/33/50(internal)/66(internal)MHz        
   Chip Set          OPTI                                         
   Max. Onboard DRAM 32MB                                         
   Cache             None                                         
   BIOS              Phoenix                                      
   Dimensions        330mm x 218mm                                
   I/O Options       None                                         
   NPU Options       None                                         

<gopher://bitreich.org/I/th99/m/I-L/32073-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose            | Location | Purpose         | Location |
   |--------------------+----------+-----------------+----------|
   | External battery   |    J1    | Turbo LED       |    J5    |
   |--------------------+----------+-----------------+----------|
   | Keyboard connector |   J2A    | Power LED &     |   J19    |
   |                    |          | keylock         |          |
   |--------------------+----------+-----------------+----------|
   | Reset switch       |    J3    | Speaker         |   J20    |
   |--------------------+----------+-----------------+----------|
   | Turbo switch       |    J4    |                 |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Monitor type select - CGA, EGA,  |  JP2   |   Closed   |
   |   | VGA                              |        |            |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select - monochrome |  JP2   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | I/O recovery time enabled        |  JP13  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | I/O recovery time disabled       |  JP13  | 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     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   | CPU Type  |        JP9        |  JP10  |       JP11        |
   |-----------+-------------------+--------+-------------------|
   |  80486SX  | pins 1 & 2 closed |  Open  |       Open        |
   |-----------+-------------------+--------+-------------------|
   |  80486DX  | pins 2 & 3 closed | Closed | pins 2 & 3 closed |
   |-----------+-------------------+--------+-------------------|
   |    P24    | pins 2 & 3 closed | Closed | pins 1 & 2 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SYSTEM CLOCK CONFIGURATION                 |
   |------------------------------------------------------------|
   |              System Clock              |        JP5        |
   |----------------------------------------+-------------------|
   |                 20MHz                  | pins 1 & 2 closed |
   |----------------------------------------+-------------------|
   |     Half of alternative oscillator     | pins 2 & 3 closed |
   |           frequency at OSC3            |                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            UPGRADE PROCESSOR TYPE CONFIGURATION            |
   |------------------------------------------------------------|
   | Upgrade processor  |        JP6        |        JP7        |
   |--------------------+-------------------+-------------------|
   |      80486DX       | pins 2 & 3 closed | pins 2 & 3 closed |
   |--------------------+-------------------+-------------------|
   |  80487SX or other  | pins 1 & 2 closed | pins 1 & 2 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               EXTERNAL BATTERY CONFIGURATION               |
   |------------------------------------------------------------|
   |         Battery type          |            JP3             |
   |-------------------------------+----------------------------|
   |    3.6V Lithium battery **    |     pins 1 & 2 closed      |
   |-------------------------------+----------------------------|
   |     4.5V Alkaline Battery     |     pins 2 & 4 closed      |
   |-------------------------------+----------------------------|
   |    6V (4 AA) Battery pack     |     pins 3 & 4 closed      |
   |-------------------------------+----------------------------|
   |      6V Battery pack **       |     pins 1 & 3 closed      |
   |------------------------------------------------------------|
   | Note:** with internal series current limiting resistor.    |
   +------------------------------------------------------------+