(TXT) View Source
       
       # 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                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        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.    |
          +------------------------------------------------------------+