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

   IT486EL

   Processor         80486SX/80487SX/80486DX/80486DX2             
   Processor Speed   20/25/33/40/50(internal)/50/66(internal)MHz  
   Chip Set          UMC                                          
   Max. Onboard DRAM 128MB                                        
   Cache             64/128/256KB                                 
   BIOS              Phoenix                                      
   Dimensions        330mm x 218mm                                
   I/O Options       None                                         
   NPU Options       4167                                         

<gopher://bitreich.org/I/th99/m/I-L/32021-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Speaker             |    J4    | Reset switch   |    S9    |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |    J5    |                |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function                | Jumper  | Position |
   |---------------------------------------+---------+----------|
   |>> | Monitor type select monochrome    |   JP5   |   Open   |
   |---+-----------------------------------+---------+----------|
   |   | Monitor type select color         |   JP5   |  Closed  |
   |---+-----------------------------------+---------+----------|
   |>> | Factory configured - do not alter |   JP6   |   Open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (4) 16M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |      128MB       |    (4) 16M x 9     |    (4) 16M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   | TAG (U52)  | TAG (U53)  |
   |-------+-------------+------------+------------+------------|
   | 64KB  | (4) 8K x 8  | (4) 8K x 8 | (2) 8K x 8 |    NONE    |
   |-------+-------------+------------+------------+------------|
   | 128KB | (4) 32K x 8 |    NONE    | (2) 8K x 8 |    NONE    |
   |-------+-------------+------------+------------+------------|
   | 256KB | (4) 32K x 8 | (4) 32K x  | (2) 8K x 8 | (2) 8K x 8 |
   |       |             |     8      |            |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Size   |    JP12    |    JP13    |    JP14    |   JP15    |
   |---------+------------+------------+------------+-----------|
   |  64KB   |    Open    |    Open    |    Open    |   Open    |
   |---------+------------+------------+------------+-----------|
   |  128KB  |    Open    |   Closed   |    Open    |  Closed   |
   |---------+------------+------------+------------+-----------|
   |  256KB  |   Closed   |   Closed   |   Closed   |  Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |  CPU Type   |           JP8            |       JP10        |
   |-------------+--------------------------+-------------------|
   |   80486SX   |    pins 2 & 3 closed     |       Open        |
   |-------------+--------------------------+-------------------|
   |   80487SX   | pins 1, 2, 3, & 4 closed | pins 1 & 2 closed |
   |-------------+--------------------------+-------------------|
   | 80486DX/DX2 | pins 1, 2, 3, & 4 closed | pins 2 & 3 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   | CPU speed  |   JP2    |   JP3    |  JP4   |  JP7   |  JP9  |
   |------------+----------+----------+--------+--------+-------|
   |   20MHz    |   Open   |  Closed  | 1 & 2  |  Open  | 2 & 3 |
   |------------+----------+----------+--------+--------+-------|
   |   25MHz    |   Open   |   Open   | 1 & 2  |  Open  | 2 & 3 |
   |------------+----------+----------+--------+--------+-------|
   |   33MHz    |  Closed  |   Open   | 1 & 2  |  Open  | 2 & 3 |
   |------------+----------+----------+--------+--------+-------|
   |   40MHz    |   Open   |   Open   | 2 & 3  | Closed | 2 & 3 |
   |------------+----------+----------+--------+--------+-------|
   |   50iMHz   |   Open   |   Open   | 1 & 2  |  Open  | 2 & 3 |
   |------------+----------+----------+--------+--------+-------|
   |   50MHz    |  Closed  |   Open   | 1 & 2  |  Open  | 1 & 2 |
   |------------+----------+----------+--------+--------+-------|
   |   66iMHz   |  Closed  |   Open   | 1 & 2  |  Open  | 2 & 3 |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+